Merge pull request #104 from seamusabshere/from_uri_implicit_arg

Make ENV['MONGODB_URI'] the default first arg for `Mongo::Connection.from_uri`

.gitignore

@@ -14,3 +14,14 @@ benchmark
 *#*
 *.class
 *.swp
+*.pid
+*.log
+test/load/unicorn/unicorn.rb
+test/load/thin/config.yml
+test/tools/data/
+.rvmrc
+Gemfile.lock
+.idea/*
+tmp
+
+

.travis.yml

@@ -0,0 +1,11 @@
+language: ruby
+
+rvm:
+  - 1.8.7
+  - 1.9.2
+  - 1.9.3
+
+script: bundle exec rake test:ruby
+
+notifications:
+  email: false

Gemfile

@@ -0,0 +1,28 @@
+source :rubygems
+
+group :development, :test do
+  # Generic
+  gem "bundler"
+  gem "rake"
+  gem "json"
+
+  # Deployment
+  gem "git"
+  gem "redcarpet"
+  gem "yard"
+
+  # Testing
+  gem "mocha"
+  gem "shoulda"
+  gem "test-unit"
+  gem "ci_reporter"
+  gem "ruby-prof" unless RUBY_PLATFORM =~ /java/
+  gem "rake-compiler"
+
+  # Java
+  platforms :jruby do
+    gem "bouncy-castle-java"
+    gem "jruby-launcher"
+    gem "jruby-openssl"
+  end
+end

README.md

@@ -1,39 +1,64 @@
+# Documentation
+
+This API documentation is available online at [http://api.mongodb.org/ruby](http://api.mongodb.org/ruby)
+for all releases of the MongoDB Ruby driver.  Please reference the exact version of the documentation
+that matches the release of the Ruby driver that you are using.  Note that the
+[Ruby Language Center for MongoDB](http://www.mongodb.org/display/DOCS/Ruby+Language+Center)
+has a link to API Documentation for the current release.
+
+If you have the source, you can generate the matching documentation  by typing
+
+    $ rake ydoc
+
+Then open the file ydoc/index.html in your browser.
+
 # Introduction
 
 This is the 10gen-supported Ruby driver for [MongoDB](http://www.mongodb.org).
 
-This documentation includes other articles of interest, include:
+For the reference manual, use the links in the upper-left and upper-right corners for quick navigation to the following.
 
-1. [A tutorial](http://api.mongodb.org/ruby/current/file.TUTORIAL.html).
+* [Alphabetic Index](_index.html)
-2. [Replica Sets in Ruby](http://api.mongodb.org/ruby/current/file.REPLICA_SETS.html).
+* [Class List](class_list.html)
-3. [Write Concern in Ruby](http://api.mongodb.org/ruby/current/file.WRITE_CONCERN.html).
+* [Method List](method_list.html)
-4. [GridFS in Ruby](http://api.mongodb.org/ruby/current/file.GridFS.html).
+* [File List](file_list.html)
-5. [Frequently Asked Questions](http://api.mongodb.org/ruby/current/file.FAQ.html).
-6. [History](http://api.mongodb.org/ruby/current/file.HISTORY.html).
-7. [Credits](http://api.mongodb.org/ruby/current/file.CREDITS.html).
 
-Here's a quick code sample. Again, see the [MongoDB Ruby Tutorial](http://api.mongodb.org/ruby/current/file.TUTORIAL.html)
+This documentation has other articles of interest, including:
+
+1. [A tutorial](docs/TUTORIAL.md).
+2. [Replica Sets in Ruby](docs/REPLICA_SETS.md).
+3. [Write Concern in Ruby](docs/WRITE_CONCERN.md).
+4. [Tailable Cursors in Ruby](docs/TAILABLE_CURSORS.md).
+5. [Read Preference in Ruby](docs/READ_PREFERENCE.md).
+6. [GridFS in Ruby](docs/GridFS.md).
+7. [Frequently Asked Questions](docs/FAQ.md).
+8. [History](docs/HISTORY.md).
+9. [Release plan](docs/RELEASES.md).
+10. [Credits](docs/CREDITS.md).
+
+Here's a quick code sample. Again, see the [MongoDB Ruby Tutorial](docs/TUTORIAL.md)
 for much more:
 
     require 'rubygems'
     require 'mongo'
-    include Mongo
 
-    db   = Connection.new.db('sample-db')
+    @conn = Mongo::Connection.new
-    coll = db.collection('test')
+    @db   = @conn['sample-db']
+    @coll = @db['test']
 
-    coll.remove
+    @coll.remove
     3.times do |i|
-      coll.insert({'a' => i+1})
+      @coll.insert({'a' => i+1})
     end
-    puts "There are #{coll.count()} records. Here they are:"
+
-    coll.find().each { |doc| puts doc.inspect }
+    puts "There are #{@coll.count} records. Here they are:"
+    @coll.find.each { |doc| puts doc.inspect }
 
 # Installation
 
 ### Ruby Versions
 
-The driver works and is consistently tested on Ruby 1.8.6, 1.8.7, and 1.9.2, and JRuby 1.5.1.
+The driver works and is consistently tested on Ruby 1.8.7 and 1.9.3 as well as JRuby 1.6.6.
 
 Note that if you're on 1.8.7, be sure that you're using a patchlevel >= 249. There
 are some IO bugs in earlier versions.
@@ -58,7 +83,7 @@ And for a significant performance boost, you'll want to install the C extensions
     $ gem install bson_ext
 
 Note that bson_ext isn't used with JRuby. Instead, some native Java extensions are bundled with the bson gem.
-If you ever need to modify these extenions, you can recompile with the following rake task:
+If you ever need to modify these extensions, you can recompile with the following rake task:
 
     $ rake build:java
 
@@ -79,7 +104,7 @@ That's all there is to it!
 
 # Examples
 
-For extensive examples, see the [MongoDB Ruby Tutorial](http://www.mongodb.org/display/DOCS/Ruby+Tutorial).
+For extensive examples, see the [MongoDB Ruby Tutorial](http://api.mongodb.org/ruby/current/file.TUTORIAL.html).
 
 Bundled with the driver are many examples, located in the "docs/examples" subdirectory. Samples include using
 the driver and using the GridFS class GridStore. MongoDB must be running for
@@ -99,7 +124,7 @@ See also the test code, especially test/test_db_api.rb.
 
 The Ruby driver include two abstractions for storing large files: Grid and GridFileSystem.
 The Grid class is a Ruby implementation of MongoDB's GridFS file storage
-specification. GridFileSystem is essentailly the same, but provides a more filesystem-like API
+specification. GridFileSystem is essentially the same, but provides a more filesystem-like API
 and assumes that filenames are unique.
 
 An instance of both classes represents an individual file store. See the API reference
@@ -107,9 +132,10 @@ for details, and see examples/gridfs.rb for code that uses many of the Grid
 features (metadata, content type, seek, tell, etc).
 
 Examples:
+
       # Write a file on disk to the Grid
       file = File.open('image.jpg')
-      grid = Grid.new(db)
+      grid = Mongo::Grid.new(db)
       id   = grid.put(file)
 
       # Retrieve the file
@@ -129,7 +155,7 @@ The driver is thread-safe.
 
 ## Connection Pooling
 
-As of v0.18, the driver implements connection pooling. By default, only one
+The driver implements connection pooling. By default, only one
 socket connection will be opened to MongoDB. However, if you're running a
 multi-threaded application, you can specify a maximum pool size and a maximum
 timeout for waiting for old connections to be released to the pool.
@@ -141,20 +167,21 @@ To set up a pooled connection to a single MongoDB instance:
 Though the pooling architecture will undoubtedly evolve, it currently owes much credit
 to the connection pooling implementations in ActiveRecord and PyMongo.
 
-## Using with Phusion Passenger and Unicorn
+## Forking
 
-When Passenger and Unicorn are in smart spawning mode you need to be sure that child
+Certain Ruby application servers work by forking, and it has long been necessary to
-processes will create a new connection to the database. In Passenger, this can be handled like so:
+re-establish the child process's connection to the database after fork. But with the release
+of v1.3.0, the Ruby driver detects forking and reconnects automatically.
 
-    if defined?(PhusionPassenger)
+## Environment variable `MONGODB_URI`
-      PhusionPassenger.on_event(:starting_worker_process) do |forked|
-        if forked
-          # Create new connection here
-        end
-      end
-    end
 
-The above code should be put into a Rails initializer or other initialization script.
+`Mongo::Connection.from_uri`, `Mongo::Connection.new` and `Mongo::ReplSetConnection.new` will use <code>ENV["MONGODB_URI"]</code> if no other args are provided.
+
+The URI must fit this specification:
+
+    mongodb://[username:password@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database][?options]]
+
+If the type of connection (direct or replica set) should be determined entirely from <code>ENV["MONGODB_URI"]</code>, you may want to use `Mongo::Connection.from_uri` because it will return either `Mongo::Connection` or a `Mongo::ReplSetConnection` depending on how many hosts are specified. Trying to use `Mongo::Connection.new` with multiple hosts in <code>ENV["MONGODB_URI"]</code> will raise an exception.
 
 ## String Encoding
 
@@ -202,7 +229,7 @@ Here is a sample primary key factory, taken from the tests:
 
     class TestPKFactory
       def create_pk(row)
-        row['_id'] ||= Mongo::ObjectID.new
+        row['_id'] ||= BSON::ObjectId.new
         row
       end
     end
@@ -212,14 +239,14 @@ keys. This is the PKFactory that comes with the MongoRecord code (an
 ActiveRecord-like framework for non-Rails apps) and the AR Mongo adapter code
 (for Rails):
 
-  class PKFactory
+    class PKFactory
-    def create_pk(row)
+      def create_pk(row)
-      return row if row[:_id]
+        return row if row[:_id]
-      row.delete(:_id)      # in case it exists but the value is nil
+        row.delete(:_id)      # in case it exists but the value is nil
-      row['_id'] ||= Mongo::ObjectID.new
+        row['_id'] ||= BSON::ObjectId.new
-      row
+        row
+      end
     end
-  end
 
 A database's PK factory object may be set either when a DB object is created
 or immediately after you obtain it, but only once. The only reason it is
@@ -259,10 +286,31 @@ Notes:
 * Cursors will timeout on the server after 10 minutes. If you need to keep a cursor
   open for more than 10 minutes, specify `:timeout => false` when you create the cursor.
 
+## Socket timeouts
+
+The Ruby driver support timeouts on socket read operations. To enable them, set the
+`:op_timeout` option when you create a `Mongo::Connection` object.
+
+If implementing higher-level timeouts, using tools like `Rack::Timeout`, it's very important
+to call `Mongo::Connection#close` to prevent the subsequent operation from receiving the previous
+request.
+
+### Test-Unit, Shoulda, and Mocha
+
+Running the test suite requires test-unit, shoulda, and mocha.  You can install them as follows:
+
+    $ gem install test-unit
+    $ gem install shoulda
+    $ gem install mocha
+
+The tests assume that the Mongo database is running on the default port. You
+can override the default host (localhost) and port (Connection::DEFAULT_PORT) by
+using the environment variables MONGO_RUBY_DRIVER_HOST and
+MONGO_RUBY_DRIVER_PORT.
 
 # Testing
 
-If you have the source code, you can run the tests.
+If you have the source code, you can run the tests.  Skip this test with the C extension if you're running JRuby.
 
     $ rake test:c
 
@@ -275,37 +323,13 @@ These will run both unit and functional tests. To run these tests alone:
     $ rake test:unit
     $ rake test:functional
 
-To run any individual rake tasks with the C extension enabled, just pass C_EXT=true to the task:
+To run any individual rake tasks with the C extension enabled, just pass C_EXT=true to the task (don't do this with JRuby):
 
     $ rake test:unit C_EXT=true
 
-If you want to test replica set, you can run the following tests
+If you want to test replica set, you can run the following task:
-individually:
 
-    $ rake test:replica_set_count
+    $ rake test:rs
-    $ rake test:replica_set_insert
-    $ rake test:replica_set_query
-
-### Shoulda and Mocha
-
-Running the test suite requires shoulda and mocha.  You can install them as follows:
-
-    $ gem install shoulda
-    $ gem install mocha
-
-The tests assume that the Mongo database is running on the default port. You
-can override the default host (localhost) and port (Connection::DEFAULT_PORT) by
-using the environment variables MONGO_RUBY_DRIVER_HOST and
-MONGO_RUBY_DRIVER_PORT.
-
-# Documentation
-
-This documentation is available online at [http://api.mongodb.org/ruby](http://api.mongodb.org/ruby). You can
-generate the documentation if you have the source by typing
-
-    $ rake ydoc
-
-Then open the file +ydoc/index.html+.
 
 # Release Notes
 

Rakefile

@@ -1,18 +1,38 @@
 # -*- mode: ruby; -*-
-require 'rubygems'
+if RUBY_VERSION < '1.9.0'
-require 'rubygems/specification'
+  require 'rubygems'
-require 'fileutils'
+  require 'rubygems/specification'
-require 'rake'
-require 'rake/testtask'
-require 'rake/gempackagetask'
-begin
-  require 'rake/contrib/rubyforgepublisher'
-rescue LoadError
 end
-require 'rbconfig'
+
-include Config
+require 'fileutils'
+require 'rake/testtask'
+require 'rake'
+require 'rake/extensiontask'
+require 'rake/javaextensiontask'
+
+begin
+  require 'git'
+  require 'devkit'
+  require 'ci/reporter/rake/test_unit'
+  rescue LoadError
+end
+
 ENV['TEST_MODE'] = 'TRUE'
 
+Rake::ExtensionTask.new('cbson') do |ext|
+  ext.lib_dir = "lib/bson_ext"
+end
+
+#Rake::JavaExtensionTask.new('jbson') do |ext| # not yet functional
+#  ext.ext_dir = 'ext/src/org/jbson'
+#end
+
+desc "Compiles and tests MongoDB Ruby driver w/ C extensions."
+task :c do
+  Rake::Task['compile:cbson'].invoke
+  Rake::Task['test:c'].invoke
+end
+
 task :java do
   Rake::Task['build:java'].invoke
   Rake::Task['test:ruby'].invoke
@@ -26,12 +46,11 @@ namespace :build do
     jar_dir   = File.join(java_dir, 'jar')
 
     jruby_jar = File.join(jar_dir, 'jruby.jar')
-    mongo_jar = File.join(jar_dir, 'mongo-2.2.jar')
+    mongo_jar = File.join(jar_dir, 'mongo-2.6.5.jar')
-    bson_jar = File.join(jar_dir, 'bson-2.2.jar')
 
     src_base   = File.join(java_dir, 'src')
 
-    system("javac -Xlint:unchecked -classpath #{jruby_jar}:#{mongo_jar}:#{bson_jar} #{File.join(src_base, 'org', 'jbson', '*.java')}")
+    system("javac -Xlint:deprecation -Xlint:unchecked -classpath #{jruby_jar}:#{mongo_jar} #{File.join(src_base, 'org', 'jbson', '*.java')}")
     system("cd #{src_base} && jar cf #{File.join(jar_dir, 'jbson.jar')} #{File.join('.', 'org', 'jbson', '*.class')}")
   end
 end
@@ -42,10 +61,14 @@ task :test do
   puts "To test the pure ruby driver: \nrake test:ruby\n\n"
 end
 
+task :path do
+    $:.unshift(File.join(File.dirname(__FILE__), 'lib'))
+end
+
 namespace :test do
 
   desc "Test the driver with the C extension enabled."
-  task :c do
+  task :c => :path do
     ENV['C_EXT'] = 'TRUE'
     if ENV['TEST']
       Rake::Task['test:functional'].invoke
@@ -60,7 +83,7 @@ namespace :test do
   end
 
   desc "Test the driver using pure ruby (no C extension)"
-  task :ruby do
+  task :ruby => :path do
     ENV['C_EXT'] = nil
     if ENV['TEST']
       Rake::Task['test:functional'].invoke
@@ -77,46 +100,61 @@ namespace :test do
   Rake::TestTask.new(:rs) do |t|
     t.test_files = FileList['test/replica_sets/*_test.rb']
     t.verbose    = true
+    t.ruby_opts << '-w'
+  end
+
+  desc "Run the replica set test suite"
+  Rake::TestTask.new(:rs_no_threads) do |t|
+    t.test_files = FileList['test/replica_sets/*_test.rb'] - ["test/replica_sets/refresh_with_threads_test.rb"]
+    t.verbose    = true
+    t.ruby_opts << '-w'
   end
 
   Rake::TestTask.new(:unit) do |t|
     t.test_files = FileList['test/unit/*_test.rb']
     t.verbose    = true
+    t.ruby_opts << '-w'
   end
 
   Rake::TestTask.new(:functional) do |t|
     t.test_files = FileList['test/*_test.rb']
     t.verbose    = true
+    t.ruby_opts << '-w'
   end
 
   Rake::TestTask.new(:pooled_threading) do |t|
     t.test_files = FileList['test/threading/*_test.rb']
     t.verbose    = true
+    t.ruby_opts << '-w'
   end
 
   Rake::TestTask.new(:auto_reconnect) do |t|
     t.test_files = FileList['test/auxillary/autoreconnect_test.rb']
     t.verbose    = true
+    t.ruby_opts << '-w'
   end
 
   Rake::TestTask.new(:authentication) do |t|
     t.test_files = FileList['test/auxillary/authentication_test.rb']
     t.verbose    = true
+    t.ruby_opts << '-w'
   end
 
   Rake::TestTask.new(:new_features) do |t|
     t.test_files = FileList['test/auxillary/1.4_features.rb']
     t.verbose    = true
+    t.ruby_opts << '-w'
   end
 
   Rake::TestTask.new(:bson) do |t|
     t.test_files = FileList['test/bson/*_test.rb']
     t.verbose    = true
+    t.ruby_opts << '-w'
   end
 
-  task :drop_databases do |t|
+  task :drop_databases => :path do |t|
     puts "Dropping test databases..."
-    require './lib/mongo'
+    require 'mongo'
     con = Mongo::Connection.new(ENV['MONGO_RUBY_DRIVER_HOST'] || 'localhost',
       ENV['MONGO_RUBY_DRIVER_PORT'] || Mongo::Connection::DEFAULT_PORT)
     con.database_names.each do |name|
@@ -135,13 +173,21 @@ end
 
 desc "Generate YARD documentation"
 task :ydoc do
-  require File.join(File.dirname(__FILE__), 'lib', 'mongo')
+  require './lib/mongo/version.rb'
   out = File.join('ydoc', Mongo::VERSION)
   FileUtils.rm_rf('ydoc')
-  system "yardoc lib/**/*.rb lib/mongo/**/*.rb lib/bson/**/*.rb -e yard/yard_ext.rb -p yard/templates -o #{out} --title MongoRuby-#{Mongo::VERSION} --files docs/TUTORIAL.md,docs/GridFS.md,docs/FAQ.md,docs/REPLICA_SETS.md,docs/WRITE_CONCERN.md,docs/HISTORY.md,docs/CREDITS.md,docs/1.0_UPGRADE.md"
+  system "yardoc lib/**/*.rb lib/mongo/**/*.rb lib/bson/**/*.rb -e ./yard/yard_ext.rb -p yard/templates -o #{out} --title MongoRuby-#{Mongo::VERSION} --files docs/TUTORIAL.md,docs/GridFS.md,docs/FAQ.md,docs/REPLICA_SETS.md,docs/WRITE_CONCERN.md,docs/READ_PREFERENCE.md,docs/HISTORY.md,docs/CREDITS.md,docs/RELEASES.md,docs/CREDITS.md,docs/TAILABLE_CURSORS.md"
 end
 
-namespace :bamboo do
+namespace :jenkins do
+  task :ci_reporter do
+    begin
+      require 'ci/reporter/rake/test_unit'
+    rescue LoadError
+      warn "Warning: Unable to load ci_reporter gem."
+    end
+  end
+
   namespace :test do
     task :ruby do
       Rake::Task['test:ruby'].invoke
@@ -155,31 +201,34 @@ namespace :bamboo do
 end
 
 namespace :gem do
-
   desc "Install the gem locally"
   task :install do
-    sh "gem build bson.gemspec"
+    `gem build bson.gemspec`
-    sh "gem install --no-rdoc --no-ri bson-*.gem"
+    `gem install --no-rdoc --no-ri bson-*.gem`
 
-    sh "gem build mongo.gemspec"
+    `gem build mongo.gemspec`
-    sh "gem install --no-rdoc --no-ri mongo-*.gem"
+    `gem install --no-rdoc --no-ri mongo-*.gem`
 
-    sh "rm mongo-*.gem"
+    `rm mongo-*.gem`
-    sh "rm bson-*.gem"
+    `rm bson-*.gem`
+  end
+  
+  desc "Uninstall the optional c extensions"
+  task :uninstall_extensions do
+    `gem uninstall bson_ext`
   end
 
   desc "Install the optional c extensions"
   task :install_extensions do
-    sh "gem build bson_ext.gemspec"
+    `gem build bson_ext.gemspec`
-    sh "gem install --no-rdoc --no-ri bson_ext-*.gem"
+    `gem install --no-rdoc --no-ri bson_ext-*.gem`
-    sh "rm bson_ext-*.gem"
+    `rm bson_ext-*.gem`
   end
-
 end
 
 namespace :ci do
   namespace :test do
-    task :c do
+    task :c => :path do
       Rake::Task['gem:install'].invoke
       Rake::Task['gem:install_extensions'].invoke
       Rake::Task['test:c'].invoke
@@ -187,6 +236,99 @@ namespace :ci do
   end
 end
 
+# Deployment
+VERSION_FILES = %w(lib/bson/version.rb lib/mongo/version.rb ext/cbson/version.h)
+GEMSPECS = %w(bson.gemspec bson.java.gemspec bson_ext.gemspec mongo.gemspec)
+
+def gem_list(version)
+  files = []
+  files << "bson-#{version}.gem"
+  files << "bson-#{version}-java.gem"
+  files << "bson_ext-#{version}.gem"
+  files << "mongo-#{version}.gem"
+  return files
+end
+
+def check_gem_list_existence(version)
+  gem_list(version).each do |filename|
+    if !File.exists?(filename)
+      raise "#{filename} does not exist!"
+    end
+  end
+end
+
+def check_version(version)
+  if !(version =~ /\d\.\d\.\d/)
+    raise "Must specify a valid version (e.g., x.y.z)"
+  end
+end
+
+def current_version
+  f = File.open("lib/mongo/version.rb")
+  str = f.read
+  str =~ /VERSION\s+=\s+([.\d"]+)$/
+  return $1
+end
+
+def change_version(new_version)
+  version = current_version
+  puts "Changing version from #{version} to #{new_version}"
+  VERSION_FILES.each do |filename|
+    f = File.open(filename)
+    str = f.read
+    f.close
+    str.gsub!(version, "\"#{new_version}\"")
+    File.open(filename, 'w') do |f|
+      f.write(str)
+    end
+  end
+end
+
+namespace :deploy do
+  desc "Change version to new release"
+  task :change_version, [:version] do |t, args|
+    check_version(args[:version]) 
+    change_version(args[:version])
+  end
+
+  desc "Add version files, commit, tag release"
+  task :git_prepare do |t, args|
+    g = Git.open(Dir.getwd())
+    version = current_version
+    to_commit = VERSION_FILES << 'docs/HISTORY.md'
+    g.add(to_commit)
+    g.commit "RELEASE #{version}"
+    g.add_tag("#{version}")
+  end
+
+  desc "Push release to github"
+  task :git_push do
+    g = Git.open(Dir.getwd())
+    g.push
+  end
+
+  desc "Build all gems"
+  task :gem_build do
+    `rm *.gem`
+    `gem build mongo.gemspec`
+    `gem build bson.gemspec`
+    `gem build bson.java.gemspec`
+    `gem build bson_ext.gemspec`
+    puts `ls *.gem`
+  end
+
+  desc "Push all gems to RubyGems"
+  task :gem_push do |t, args|
+    check_gem_list_existence(current_version)
+    gem_list.each do |gem|
+      puts "Push #{gem} to RubyGems? (y/N)"
+      if gets.chomp! == 'y'
+        system "gem push #{gem}"
+      end
+    end
+  end
+end
+
 task :default => :list
 
 task :list do

bench/Rakefile

@@ -0,0 +1,62 @@
+require 'benchmark'
+
+ENV['MODE'] = 'c'
+$suite = {
+    :suite_insert_one =>  [ :test_insert_one, :test_insert_one_safe ],
+    :suite_insert_many => [ :test_insert_many, :test_insert_many_safe ],
+    :suite_find =>        [ :test_find_one, :test_find_many ],
+    :suite_nest =>        [ :test_insert_one_nest_full, :test_find_one_nest_full ],
+}
+$date = Time.now.strftime('%Y%m%d-%H%M')
+
+def suite_series_name(suite)
+  "exp_series_#{suite}_#{ENV['MODE']}"
+end
+
+def suite_file_name(suite)
+  suite_series_name(suite) + '.js'
+end
+
+def suite_file_name_temp(suite)
+  suite_file_name(suite) + '.tmp'
+end
+
+task :default => [:c, :ruby]
+
+task :c do
+  ENV['MODE'] = 'c'
+  $suite.each_key do |key|
+    Rake::Task[key].invoke
+  end
+end
+
+task :ruby do
+  ENV['MODE'] = 'ruby'
+  $suite.each_key do |suite|
+    Rake::Task[suite].execute
+  end
+end
+
+$suite.each do |suite, tests|
+  tests.each do |t|
+    task t do
+      sh "ruby exp_series.rb --file #{suite_file_name_temp(suite)} --mode #{ENV['MODE']} --tag #{suite} -- --name #{t}"
+    end
+  end
+
+  desc "#{suite} - #{$suite[suite].join(', ')}"
+  task suite do |t|
+    File.open(suite_file_name_temp(suite), 'w'){|f| f.puts("#{suite_series_name(suite)} = [")}
+    btms = Benchmark.measure do
+      $suite[suite].each do |pre|
+        Rake::Task[pre].execute
+      end
+    end
+    File.open(suite_file_name_temp(suite), 'a'){|f| f.puts("]; // #{(btms.real/60.0).round} minutes")}
+    sh "mv #{suite_file_name_temp(suite)} #{suite_file_name(suite)}"
+  end
+end
+
+task :clobber do
+  sh "rm -f exp_series_suite_*.js"
+end

bench/exp_series.html

@@ -0,0 +1,675 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+ <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+    <title>Exp Series Performance Tests</title>
+    <!-- http://code.google.com/p/flot/ -->
+    <!--[if lte IE 8]><script language="javascript" type="text/javascript" src="excanvas.min.js"></script><![endif]-->
+    <script language="javascript" type="text/javascript" src="jquery.js"></script>
+    <script language="javascript" type="text/javascript" src="jquery.flot.js"></script>
+    <script language="javascript" type="text/javascript" src="exp_series_suite_insert_one_c.js"></script>
+    <script language="javascript" type="text/javascript" src="exp_series_suite_insert_one_ruby.js"></script>
+    <script language="javascript" type="text/javascript" src="exp_series_suite_insert_many_c.js"></script>
+    <script language="javascript" type="text/javascript" src="exp_series_suite_insert_many_ruby.js"></script>
+    <script language="javascript" type="text/javascript" src="exp_series_suite_find_c.js"></script>
+    <script language="javascript" type="text/javascript" src="exp_series_suite_find_ruby.js"></script>
+    <script language="javascript" type="text/javascript" src="exp_series_suite_nest_c.js"></script>
+    <script language="javascript" type="text/javascript" src="exp_series_suite_nest_ruby.js"></script>
+    <style type="text/css">
+    body {
+        font-family: sans-serif;
+        font-size: 16px;
+        margin: 50px;
+    }
+    h2 {
+        padding: 20px;
+        background-color: lightblue;
+    }
+    .title {
+        font-weight: bold;
+        margin: 20px;
+    }
+    .show_hide, #show_all, #show_default {
+        padding: 1px;
+        line-height: 200%;
+        cursor: pointer;
+        background-color: LightGray;
+    }
+    .graph {
+        width:800px;
+        height:400px;
+    }
+    .note {
+        margin: 20px;
+    }
+    .hidden {
+        display: none; //visibility: hidden; // to collapse, use display: none
+    }
+    </style>
+ </head>
+ <body>
+    <h1>Exp Series Performance Tests</h1>
+    x-axis is power of 2, log base 2 of size<br/>
+    y-axis is "document" operations per second, ex., total document insertions per second<br/>
+    <br/>
+    user_ops are operations per user-CPU-time second<br/>
+    real_ops are operations per real-time second<br/>
+    <br/>
+    For measuring Ruby driver performance, we are interested primarily in the "user" CPU time.<br/>
+    The "user" time is the time used by the Ruby driver, typically less than real time.<br/>
+    <br/>
+    <span id="show_all">Show All</span> <span id="show_default">Show Default</span>
+    <hr/>
+    <h2>Issues</h2><div id="array_slow"></div>
+    <hr/>
+    <h2>Best Practices</h2><div id="best_practices"></div>
+    <hr/>
+    <h2>Insert Many Safe - with Data Sizes</h2><p>Insert many safe is faster than insert one safe especially for increasing multiples and for smaller data, as expected.</p><div id="insert_many_safe"></div>
+    <hr/>
+    <h2>Insert Many - with Data Sizes</h2><p>Insert many is faster than insert one especially for increasing multiples and for smaller data, as expected.</p><div id="insert_many"></div>
+    <hr/>
+    <h2>Insert One Fast versus Safe - with Real Time</h2><p>Fast mode is significantly faster than safe mode especially for smaller data, as expected.</p><div id="insert_one_safe"></div>
+    <hr/>
+    <h2>Find Many versus Find One - with Real Time</h2><p>Find many with cursor is significantly faster than find one, as expected.</p><div id="find"></div>
+    <hr/>
+    <h2>C versus Ruby - with Real Time</h2><p>The C extension is significantly faster than Ruby, as expected.</p><div id="c_vs_ruby"></div>
+    <hr/>
+    <h2>Nested Structures</h2><p>The deeper binary nested array is slower than broader structures with the same number of leaves, so we omit broader structures in other tests.</p><div id="nested"></div>
+    <hr/>
+
+    <script type="text/javascript">
+
+    suite = [
+        exp_series_suite_insert_one_c,
+        exp_series_suite_insert_one_ruby,
+        exp_series_suite_insert_many_c,
+        exp_series_suite_insert_many_ruby,
+        exp_series_suite_find_c,
+        exp_series_suite_find_ruby,
+        exp_series_suite_nest_c,
+        exp_series_suite_nest_ruby
+    ];
+    expSeries = [];
+    for (i in suite) { expSeries = expSeries.concat(suite[i]); }
+
+    function genOpXY(a, xMax, plotSpec) {
+        var genOpA = $.grep(a, function(e, i){
+            if (e.exp2 > xMax) return false;
+            for (var key in plotSpec) {
+                if (key != 'x' && key != 'y' && e[key] != plotSpec[key]) return false;
+            }
+            return true;
+        });
+        return $.map(genOpA, function(e, i){return [[e[plotSpec.x], e[plotSpec.y]]];});
+    }
+    function flotSeries(expSeries, xMax, labelSpec, plotLines) {
+        return $.map(plotLines, function(plotSpec, i){
+            return {
+                label: plotSpec.y + ', ' + labelSpec + ': ' + plotSpec[labelSpec],
+                data: genOpXY(expSeries, xMax, plotSpec),
+                lines: { show: true },
+                points: { show: true }
+            };
+        });
+    }
+
+$(function () {
+
+    function xExpTicks(axis) {
+        var res = [];
+        for (var i = axis.min; i <= axis.max; i++) {
+            res.push([i, i + ':' + Math.pow(2,i)]);
+        }
+        return res;
+    }
+    function doPlot(section, title, series, classes, notes) {
+        var id = title.replace(/\W/g,'_');
+        $(section).append('<hr/>' +
+                '<span id="show_hide_' + id + '" class="show_hide">Show/Hide</span>' +
+                '<span class="title">' + title + '</span>' +
+                '<span id="note_' + id + '" class="note"></span>' +
+                '<div id="' + id + '" class="graph"></div>');
+        $('#note_' + id).text(notes);
+        var e = $('#' + id);
+        $.plot(e, series, {
+            xaxis:{ ticks:xExpTicks },
+            yaxes:[
+                { min:0 }
+            ],
+            legend:{ position:'ne' },
+            grid:{ hoverable:true }
+        });
+        e.addClass(classes);
+    }
+
+    // comment pending
+    var graph = [
+        [ '#array_slow', 'array_size_fixnum slow versus hash_size_fixnum insert one C', '', 12, 'generator',
+            [
+                { x:'exp2', y:'user_ops', generator:'array_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_one', status:'OK' },
+                { x:'exp2', y:'user_ops', generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_one', status:'OK' }
+            ],
+            'Array insertion is significantly slower than hash insertion.  ' +
+            'Investigation shows that there is an extra malloc/free for each array index key.  '
+        ],
+        [ '#array_slow', 'array_size_fixnum fast versus slow insert one C', '', 12, 'tag',
+            [
+                { x:'exp2', y:'user_ops', generator:'array_size_fixnum', operation:'insert', mode:'c', tag:'array_fast', status:'OK' },
+                { x:'exp2', y:'user_ops', generator:'array_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_one', status:'OK' }
+            ],
+            'Pending: Array insertion is now faster.'
+        ],
+        [ '#array_slow', 'array_size_fixnum fast versus hash_size_fixnum insert one C', '', 12, 'generator',
+            [
+                { x:'exp2', y:'user_ops', generator:'array_size_fixnum', operation:'insert', mode:'c', tag:'array_fast', status:'OK' },
+                { x:'exp2', y:'user_ops', generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_one', status:'OK' }
+            ],
+            'Pending: Array insertion is now as fast as hash insertion.'
+        ],
+        [ '#array_slow', 'array_nest_fixnum slow versus hash_nest_fixnum insert one C base 2', '', 12, 'generator',
+            [
+                { x:'exp2', y:'user_ops', generator:'array_nest_fixnum', operation:'insert', mode:'c', tag:'suite_insert_one', base:2, status:'OK' },
+                { x:'exp2', y:'user_ops', generator:'hash_nest_fixnum', operation:'insert', mode:'c', tag:'suite_insert_one', base:2, status:'OK' }
+            ],
+            'Nested array insertion is significantly slower than nested hash insertion.'
+        ],
+        [ '#array_slow', 'array_nest_fixnum fast versus slow insert one C base 2', 'hidden', 12, 'tag',
+            [
+                { x:'exp2', y:'user_ops', generator:'array_nest_fixnum', operation:'insert', mode:'c', tag:'array_fast', base:2 , status:'OK' },
+                { x:'exp2', y:'user_ops', generator:'array_nest_fixnum', operation:'insert', mode:'c', tag:'suite_insert_one', base:2, status:'OK' }
+            ],
+            'Pending: Nested array insertion is now faster.'
+        ],
+        [ '#array_slow', 'array_nest_fixnum fast versus hash_nest_fixnum insert one C base 2', 'hidden', 12, 'generator',
+            [
+                { x:'exp2', y:'user_ops', generator:'array_nest_fixnum', operation:'insert', mode:'c', tag:'array_fast', base:2 , status:'OK' },
+                { x:'exp2', y:'user_ops', generator:'hash_nest_fixnum', operation:'insert', mode:'c', tag:'suite_insert_one', base:2, status:'OK' }
+            ],
+            'Pending: Nested array insertion is now as fast as nested hash insertion.'
+        ],
+        [ '#best_practices', 'best practice - hash_size_fixnum insert many fast versus safe for hash size 16', '', 14, 'operation',
+            [
+                { x:'multi_power', y:'user_ops', size:16, generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:16, generator:'hash_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'real_ops', size:16, generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'real_ops', size:16, generator:'hash_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' }
+            ],
+            'Insert many to ammortize the extra cost of safe mode significantly.'
+        ],
+        [ '#best_practices', 'best practice - hash_size_fixnum find many with cursor versus find one', '', 12, 'operation',
+            [
+                { x:'exp2', y:'user_ops', generator:'hash_size_fixnum', operation:'find_many', mode:'c', tag:'suite_find', status:'OK' },
+                { x:'exp2', y:'user_ops', generator:'hash_size_fixnum', operation:'find_one', mode:'c', tag:'suite_find', status:'OK' },
+                { x:'exp2', y:'real_ops', generator:'hash_size_fixnum', operation:'find_many', mode:'c', tag:'suite_find', status:'OK' },
+                { x:'exp2', y:'real_ops', generator:'hash_size_fixnum', operation:'find_one', mode:'c', tag:'suite_find', status:'OK' }
+            ],
+            'Find many with a cursor to out-perform find one significantly.'
+        ],
+        [ '#insert_many_safe', 'value_string_size insert many safe by multiples (x axis) over a range of data sizes', 'hidden', 14, 'size',
+            [
+                { x:'multi_power', y:'user_ops', size:1, generator:'value_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4, generator:'value_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:16, generator:'value_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:64, generator:'value_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:256, generator:'value_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:1024, generator:'value_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4096, generator:'value_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' }
+            ],
+            ''
+        ],
+        [ '#insert_many_safe', 'key_string_size insert many safe by multiples (x axis) over a range of data sizes', 'hidden', 14, 'size',
+            [
+                { x:'multi_power', y:'user_ops', size:1, generator:'key_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4, generator:'key_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:16, generator:'key_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:64, generator:'key_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:256, generator:'key_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:1024, generator:'key_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4096, generator:'key_string_size', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' }
+            ],
+            ''
+        ],
+        [ '#insert_many_safe', 'hash_size_fixnum insert many safe by multiples (x axis) over a range of data sizes', '', 14, 'size',
+            [
+                { x:'multi_power', y:'user_ops', size:1, generator:'hash_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4, generator:'hash_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:16, generator:'hash_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:64, generator:'hash_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:256, generator:'hash_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:1024, generator:'hash_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4096, generator:'hash_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' }
+            ],
+            ''
+        ],
+        [ '#insert_many_safe', 'array_size_fixnum insert many safe by multiples (x axis) over a range of data sizes', 'hidden', 14, 'size',
+            [
+                { x:'multi_power', y:'user_ops', size:1, generator:'array_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4, generator:'array_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:16, generator:'array_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:64, generator:'array_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:256, generator:'array_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:1024, generator:'array_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4096, generator:'array_size_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' }
+            ],
+            ''
+        ],
+        [ '#insert_many_safe', 'array_nest_fixnum insert many safe by multiples (x axis) over a range of data sizes', 'hidden', 14, 'size',
+            [
+                { x:'multi_power', y:'user_ops', size:1, generator:'array_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4, generator:'array_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:16, generator:'array_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:64, generator:'array_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:256, generator:'array_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:1024, generator:'array_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4096, generator:'array_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' }
+            ],
+            ''
+        ],
+        [ '#insert_many_safe', 'hash_nest_fixnum insert many safe by multiples (x axis) over a range of data sizes', 'hidden', 14, 'size',
+            [
+                { x:'multi_power', y:'user_ops', size:1, generator:'hash_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4, generator:'hash_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:16, generator:'hash_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:64, generator:'hash_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:256, generator:'hash_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:1024, generator:'hash_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4096, generator:'hash_nest_fixnum', operation:'insert_safe', mode:'c', tag:'suite_insert_many', status:'OK' }
+            ],
+            ''
+        ],
+        [ '#insert_many', 'value_string_size insert many by multiples (x axis) over a range of data sizes', 'hidden', 14, 'size',
+            [
+                { x:'multi_power', y:'user_ops', size:1, generator:'value_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4, generator:'value_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:16, generator:'value_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:64, generator:'value_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:256, generator:'value_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:1024, generator:'value_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4096, generator:'value_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' }
+            ],
+            ''
+        ],
+        [ '#insert_many', 'key_string_size insert many by multiples (x axis) over a range of data sizes', 'hidden', 14, 'size',
+            [
+                { x:'multi_power', y:'user_ops', size:1, generator:'key_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4, generator:'key_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:16, generator:'key_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:64, generator:'key_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:256, generator:'key_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:1024, generator:'key_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4096, generator:'key_string_size', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' }
+            ],
+            ''
+        ],
+        [ '#insert_many', 'hash_size_fixnum insert many by multiples (x axis) over a range of data sizes', '', 14, 'size',
+            [
+                { x:'multi_power', y:'user_ops', size:1, generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4, generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:16, generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:64, generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:256, generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:1024, generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' },
+                { x:'multi_power', y:'user_ops', size:4096, generator:'hash_size_fixnum', operation:'insert', mode:'c', tag:'suite_insert_many', status:'OK' }
+            ],
+            ''
+        ],
+        [ '#insert_many', 'array_size_fixnum insert many by multiples (x axis) over a range of data sizes', 'hidden', 14, 'size',
+            [
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+                { x:'exp2', y:'user_ops', base:32, generator:'hash_nest_fixnum', operation:'find_one', mode:'c', tag:'suite_nest', status:'OK' }
+            ],
+            ''
+        ]
+    ];
+    $.each(graph, function(i, e){
+        var section, title, classes, xMax, labelSpec, plotLines;
+        //[section, title, classes, xMax, labelSpec, plotLines, notes] = e;
+        section = e[0]; title = e[1]; classes = e[2]; xMax = e[3]; labelSpec = e[4]; plotLines = e[5]; notes = e[6];
+        var series = flotSeries(expSeries, xMax, labelSpec, plotLines);
+        doPlot(section, title, series, classes, notes);
+    });
+
+    function showTooltip(x, y, contents) {
+        $('<div id="tooltip">' + contents + '</div>').css( {
+            position: 'absolute',
+            display: 'none',
+            top: y + 5,
+            left: x + 5,
+            border: '1px solid #fdd',
+            padding: '2px',
+            'background-color': '#fee',
+            opacity: 0.80
+        }).appendTo("body").fadeIn(200);
+    }
+
+    var previousPoint = null;
+    $('.graph').bind('plothover', function (event, pos, item) {
+        $("#x").text(pos.x.toFixed(2));
+        $("#y").text(pos.y.toFixed(2));
+        if (item) {
+            if (previousPoint != item.dataIndex) {
+                previousPoint = item.dataIndex;
+
+                $("#tooltip").remove();
+                var x = item.datapoint[0].toFixed(2),
+                        y = item.datapoint[1].toFixed(2);
+
+                showTooltip(item.pageX, item.pageY,
+                        item.series.label + ' [ ' + Math.round(x) + ', ' + Math.round(y) + ' ]');
+            }
+        }
+        else {
+            $("#tooltip").remove();
+            previousPoint = null;
+        }
+    });
+
+    $('.show_hide').bind('click', function(event) {
+        var id = $(this).attr('id').replace(/^show_hide_/, '');
+        $('#' + id).toggleClass('hidden');
+    });
+
+    $('#show_all').bind('click', function(event) {
+        for (var i in graph) {
+            title = graph[i][1];
+            var id = title.replace(/\W/g,'_');
+            $('#' + id).removeClass('hidden');
+        }
+    });
+
+    $('#show_default').bind('click', function(event) {
+        for (var i in graph) {
+            title = graph[i][1];
+            var id = title.replace(/\W/g,'_');
+            $('#' + id).removeClass('hidden').addClass(graph[i][2]);
+        }
+    });
+});
+</script>
+ </body>
+</html>

bench/exp_series.js

@@ -0,0 +1,708 @@
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+];

bench/exp_series.rb

@@ -0,0 +1,498 @@
+#!/usr/bin/env ruby
+$LOAD_PATH.unshift(File.expand_path("../../lib", __FILE__))
+
+require 'rubygems'
+require 'getoptlong'
+require 'json'
+require 'benchmark'
+require 'test-unit'
+
+def set_mode(mode)
+  case mode
+    when 'c'
+      ENV.delete('TEST_MODE')
+      ENV['C_EXT'] = 'TRUE'
+    when 'ruby'
+      ENV['TEST_MODE'] = 'TRUE'
+      ENV.delete('C_EXT')
+    else
+      raise 'mode must be c or ruby'
+  end
+  return mode
+end
+
+$description = 'Exploratory/Experimental/Exponential tests for Ruby-driver performance tuning'
+$calibration_runtime = 0.5
+$target_runtime = 15.0
+$db_name = 'benchmark'
+$collection_name = 'exp_series'
+$mode = set_mode('c')
+$hostname = `uname -n`[/([^.]*)/,1]
+$osname = `uname -s`.strip
+$tag = `git log -1 --format=oneline`.split[0]
+$date = Time.now.strftime('%Y%m%d-%H%M')
+$file_name_opt = nil
+
+options_with_help = [
+    [ '--help', '-h', GetoptLong::NO_ARGUMENT, '', 'show help' ],
+    [ '--file', '-f', GetoptLong::OPTIONAL_ARGUMENT, ' file', 'output file name' ],
+    [ '--mode', '-m', GetoptLong::OPTIONAL_ARGUMENT, ' mode', 'set mode to "c" or "ruby" (c)' ],
+    [ '--tag', '-t', GetoptLong::OPTIONAL_ARGUMENT, ' tag', 'set tag for run, default is git commit key' ]
+]
+options = options_with_help.collect{|option|option[0...3]}
+
+GetoptLong.new(*options).each do |opt, arg|
+  case opt
+    when '--help'
+      puts "#{$0} -- #{$description}\n"
+      puts "usage: #{$0} [performance-options] [-- test-unit-options]"
+      puts "example: #{$0} --mode c --tag with-c-ext -- --verbose verbose --name test_insert"
+      puts "performance-options:"
+      options_with_help.each{|option| puts "#{option[0]}#{option[3]}, #{option[1]}#{option[3]}\n\t#{option[4]}"}
+      exit 0
+    when '--file'
+      $file_name_opt = arg
+    when '--mode'
+      $mode = set_mode(arg)
+    when '--tag'
+      $tag = arg
+  end
+end
+
+$file_name = $file_name_opt ? $file_name_opt : "exp_series_#{$date}_#{$tag}_#{$mode}.js"
+
+require 'mongo' # must be after option processing
+
+class Hash
+  def store_embedded(key, value)
+    case key
+      when /([^.]*)\.(.*)/
+        store($1, Hash.new) unless fetch($1, nil)
+        self[$1].store_embedded($2, value)
+      else
+        store(key, value)
+    end
+  end
+end
+
+def sys_info
+  h = Hash.new
+  if FileTest.executable?('/usr/sbin/sysctl')
+    text = `/usr/sbin/sysctl -a kern.ostype kern.version kern.hostname hw.machine hw.model hw.cputype hw.cpusubtype hw.busfrequency hw.cpufrequency hw.memsize hw.physicalcpu hw.logicalcpu hw.packages`
+    values = text.split(/\n/).collect{|line| /([^:]*) *[:=] *(.*)/.match(line)[1..2]}
+    h = Hash.new
+    values.each{|key, value| h.store_embedded(key, value) }
+  end
+  return h
+end
+
+class TestExpPerformance < Test::Unit::TestCase
+  setup :setup_test_set
+  teardown :teardown_test_set
+
+  def array_nest(base, level, obj)
+    return obj if level == 0
+    return Array.new(base, array_nest(base, level - 1, obj))
+  end
+
+  def test__array_nest
+    assert_equal(1, array_nest(2,0,1))
+    assert_equal([1, 1], array_nest(2,1,1))
+    assert_equal([[1, 1], [1, 1]], array_nest(2,2,1))
+    assert_equal([[[1, 1], [1, 1]], [[1, 1], [1, 1]]], array_nest(2,3,1))
+    assert_equal(1, array_nest(4,0,1))
+    assert_equal([1, 1, 1, 1], array_nest(4,1,1))
+    assert_equal([[1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]], array_nest(4,2,1))
+    assert_equal(1, array_nest(8,0,1))
+    assert_equal([1, 1, 1, 1, 1, 1, 1, 1], array_nest(8,1,1))
+  end
+
+  def hash_nest(base, level, obj)
+    return obj if level == 0
+    h = Hash.new
+    (0...base).each{|i| h[i.to_s] = hash_nest(base, level - 1, obj)}
+    return h
+  end
+
+  def test__hash_nest
+    assert_equal(1, hash_nest(2, 0, 1))
+    assert_equal({"0"=>1, "1"=>1}, hash_nest(2, 1, 1))
+    assert_equal({"0"=>{"0"=>1, "1"=>1}, "1"=>{"0"=>1, "1"=>1}}, hash_nest(2, 2, 1))
+    assert_equal({"0"=>{"0"=>{"0"=>1, "1"=>1}, "1"=>{"0"=>1, "1"=>1}},
+                  "1"=>{"0"=>{"0"=>1, "1"=>1}, "1"=>{"0"=>1, "1"=>1}}}, hash_nest(2, 3, 1))
+    assert_equal(1, hash_nest(4,0,1))
+    assert_equal({"0"=>1, "1"=>1, "2"=>1, "3"=>1}, hash_nest(4,1,1))
+    assert_equal({"0"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1},
+                  "1"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1},
+                  "2"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1},
+                  "3"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1}}, hash_nest(4,2,1))
+    assert_equal(1, hash_nest(8,0,1))
+    assert_equal({"0"=>1, "1"=>1, "2"=>1, "3"=>1, "4"=>1, "5"=>1, "6"=>1, "7"=>1}, hash_nest(8,1,1))
+  end
+
+  def multi_doc(multi_power, doc)
+    return doc if multi_power == -1
+    return (2 ** multi_power).times.collect{doc.dup}
+  end
+
+  def test_multi_doc
+    doc = {'a' => 1}
+    assert_equal({"a"=>1}, multi_doc(-1, doc))
+    assert_equal([{"a"=>1}], multi_doc(0, doc))
+    assert_equal([{"a"=>1}, {"a"=>1}], multi_doc(1, doc))
+    assert_equal([{"a"=>1}, {"a"=>1}, {"a"=>1}, {"a"=>1}], multi_doc(2, doc))
+    assert_equal(8, multi_doc(3, doc).size)
+    assert_equal(16, multi_doc(4, doc).size)
+    assert_equal(32, multi_doc(5, doc).size)
+    mdoc = multi_doc(2, doc)
+    mdoc[0]['b'] = 2
+    assert_equal([{"a"=>1, "b"=>2}, {"a"=>1}, {"a"=>1}, {"a"=>1}], mdoc, 'non-dup doc will fail for insert many safe')
+  end
+
+  # Performance Tuning Engineering
+  ## Completed
+  ### How to measure and compare pure Ruby versus C extension performance
+  ## Current Work Items
+  ### Profiling of C extension
+  ## Overall Strategy
+  ### Prioritize/Review Ruby 1.9.3, JRuby 1.6.7, Ruby 1.8.7
+  ### Run spectrum of exploratory performance tests
+  ### Graph results with flot in HTML wrapper - http://code.google.com/p/flot/
+  ### Select test for profiling
+  ### Find where time is being spent
+  ### Construct specific performance test
+  ### Iteratively tune specific performance test
+  ### Iterate selection of test for profiling
+  ## Notes
+  ### Start with Create/insert, writing comes first
+  ### Then Read/find, reading comes next. both findOne and find-cursor
+  ### Update is primarily server load with minimal driver load for conditions
+  ### Delete/remove is primarily server load with minimal driver load for conditions
+  ## Benefits
+  ### Performance Improvements
+  ### Knowledge of Ruby driver and techniques
+  ### Perhaps architecture and design improvements
+  ### Lessons transferable to other drivers
+  ## HW Info
+  ### Linux - /proc/cpuinfo
+  ### Mac OS X - sysctl -a hw
+
+  def setup_test_set
+    @conn = Mongo::Connection.new
+    @conn.drop_database($db_name)
+    @db = @conn.db($db_name)
+    @coll = @db.collection($collection_name)
+    @coll.remove
+    @results = []
+    puts
+    puts JSON.pretty_generate({'mode' => $mode , 'hostname' => $hostname, 'osname' => $osname, 'date' => $date, 'tag' => $tag})
+    puts JSON.pretty_generate(sys_info)
+  end
+
+  def teardown_test_set
+   # consider inserting the results into a database collection
+    # Test::Unit::TestCase pollutes STDOUT, so write to a file
+    File.open($file_name, 'a'){|f|
+      f.puts(@results.to_json.gsub(/\[/, "").gsub(/}[\],]/, "},\n")) if @results != []
+    }
+    @conn.drop_database($db_name)
+  end
+
+  def estimate_iterations(db, coll, doc, setup, teardown)
+    start_time = Time.now
+    iterations = 1
+    utime = 0.0
+    while utime <= $calibration_runtime do
+      iterations *= 2
+      setup.call(db, coll, doc, iterations)
+      btms = Benchmark.measure do
+        (0...iterations).each do
+          yield
+        end
+      end
+      utime = btms.utime
+      teardown.call(db, coll)
+    end
+    etime = (Time.now - start_time)
+    return [(iterations.to_f * $target_runtime / utime).to_i, etime]
+  end
+
+  def measure_iterations(db, coll, doc, setup, teardown, iterations)
+    setup.call(db, coll, doc, iterations)
+    btms = Benchmark.measure { iterations.times { yield } }
+    teardown.call(db, coll)
+    return [btms.utime, btms.real]
+  end
+
+  def valuate(db, coll, doc, setup, teardown)
+    @conn.drop_database($db_name) # hack to reduce paging
+    iterations, etime = estimate_iterations(db, coll, doc, setup, teardown) { yield }
+    @conn.drop_database($db_name) # hack to reduce paging
+    utime, rtime = measure_iterations(db, coll, doc, setup, teardown, iterations) { yield }
+    return [iterations, utime, rtime, etime]
+  end
+
+  def power_test(args)
+    base, power_enum, multi_enum, generator, setup, operation, teardown = args
+    generator, setup, operation, teardown = method(generator), method(setup), method(operation), method(teardown)
+    return power_enum.collect do |power|
+      multi_enum.collect do |multi_power|
+        status = 'OK'
+        size, doc = generator.call(base, power)
+        doc = multi_doc(multi_power, doc)
+        multi_size = (doc.class == Array) ? doc.size : 1;
+        iterations, utime, rtime, etime = begin
+          valuate(@db, @coll, doc, setup, teardown) { operation.call(@coll, doc) }
+        rescue Mongo::InvalidOperation => e
+          status = "#{e.class}: #{e.message}"
+          [0, 1.0, 1.0, 1.0]
+        end
+        multi_iterations = multi_size.to_f * iterations.to_f
+        user_ops = (multi_iterations / utime.to_f).round(1)
+        real_ops = (multi_iterations / rtime.to_f).round(1)
+        result = {
+            'base' => base,
+            'power' => power,
+            'size' => size,
+            'exp2' => Math.log2(size).to_i,
+            'multi_power' => multi_power,
+            'multi_size' => multi_size,
+            'generator' => generator.name.to_s,
+            'operation' => operation.name.to_s,
+            'iterations' => iterations,
+            'user_time' => utime.round(2),
+            'real_time' => rtime.round(2),
+            'user_ops' => user_ops.nan? ? 0 : user_ops,
+            'real_ops' => real_ops.nan? ? 0 : real_ops,
+            'user_usec' => (1000000.0 * utime.to_f / [multi_iterations, 1].max).round(1),
+            'real_usec' => (1000000.0 * rtime.to_f / [multi_iterations, 1].max).round(1),
+            'est_time' => etime.round(2),
+            'mode' => $mode,
+            'hostname' => $hostname,
+            'osname' => $osname,
+            'date' => $date,
+            'tag' => $tag,
+            'status' => status,
+            # 'nbench-int' => nbench.int, # thinking
+        }
+        STDERR.puts result.to_json #result.inspect
+        STDERR.flush
+        result
+      end
+    end.flatten
+  end
+
+  def value_string_size(base, power)
+    n = base ** power
+    return [n, {n.to_s => ('*' * n)}]
+  end
+
+  def key_string_size(base, power)
+    n = base ** power
+    return [n, {('*' * n) => n}]
+  end
+
+  def hash_size_fixnum(base, power)
+    n = base ** power
+    h = Hash.new
+    (0...n).each { |i| h[i.to_s] = i }
+    return [n, {n.to_s => h}] # embedded like array_size_fixnum
+  end
+
+  def array_size_fixnum(base, power)
+    n = base ** power
+    return [n, {n.to_s => Array.new(n, n)}]
+  end
+
+  def array_nest_fixnum(base, power)
+    n = base ** power
+    return [n, {n.to_s => array_nest(base, power, n)}]
+  end
+
+  def hash_nest_fixnum(base, power)
+    n = base ** power
+    return [n, {n.to_s => hash_nest(base, power, n)}]
+  end
+
+  def null_setup(db, coll, doc, iterations)
+
+  end
+
+  def default_teardown(db, coll)
+    coll.remove
+    raise 'coll not removed' if coll.size > 0
+  end
+
+  def clear_ids(doc) # delete :_id to really insert, required for safe
+    if doc.class == Array
+      doc.each{|d|d.delete(:_id)}
+    else
+      doc.delete(:_id)
+    end
+  end
+
+  def insert(coll, doc)
+    clear_ids(doc)
+    coll.insert(doc) # note that insert stores :_id in doc and subsequent inserts are updates
+  end
+
+  def insert_safe(coll, doc)
+    clear_ids(doc)
+    coll.insert(doc, :safe => true) # note that insert stores :_id in doc and subsequent inserts with :_id are updates
+  end
+
+  def find_one_setup(db, coll, doc, iterations)
+    insert(coll, doc)
+  end
+
+  def find_one(coll, doc)
+    h = coll.find_one
+    raise "find_one failed" unless h
+  end
+
+  def find_many_setup(db, coll, doc, iterations)
+    (0...(iterations - coll.size)).each{insert(coll, doc)} #TODO - insert many
+    @cursor = coll.find
+    @queries = 1
+  end
+
+  def find_many(coll, doc)
+    h = @cursor.next
+    unless h
+      @cursor = coll.find
+      @queries += 1
+      @cursor.next
+    end
+  end
+
+  def find_many_teardown(db, coll)
+    puts "queries: #{@queries}" if @queries > 1
+    default_teardown(db, coll)
+  end
+
+  def test_null
+    # just setup/teardown for options parsing and sys_info
+  end
+
+  def test_array_fast
+    [
+        [2, (0..14), (-1..-1), :array_size_fixnum, :null_setup, :insert, :default_teardown],
+        [2, (0..17), (-1..-1), :hash_size_fixnum, :null_setup, :insert, :default_teardown],
+        [2, (0..12), (-1..-1), :array_nest_fixnum, :null_setup, :insert, :default_teardown],
+        [2, (0..15), (-1..-1), :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
+    ].each{|args| @results += power_test(args)}
+  end
+
+  def test_insert_one
+    [
+        [2, (0..15), (-1..-1), :value_string_size, :null_setup, :insert, :default_teardown],
+        [2, (0..15), (-1..-1), :key_string_size, :null_setup, :insert, :default_teardown],
+        [2, (0..14), (-1..-1), :array_size_fixnum, :null_setup, :insert, :default_teardown],
+        [2, (0..17), (-1..-1), :hash_size_fixnum, :null_setup, :insert, :default_teardown],
+        [2, (0..12), (-1..-1), :array_nest_fixnum, :null_setup, :insert, :default_teardown],
+        [2, (0..15), (-1..-1), :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
+    ].each{|args| @results += power_test(args)}
+  end
+
+  def test_insert_one_safe
+    [
+        [2, (0..15), (-1..-1), :value_string_size, :null_setup, :insert_safe, :default_teardown],
+        [2, (0..15), (-1..-1), :key_string_size, :null_setup, :insert_safe, :default_teardown],
+        [2, (0..14), (-1..-1), :array_size_fixnum, :null_setup, :insert_safe, :default_teardown],
+        [2, (0..17), (-1..-1), :hash_size_fixnum, :null_setup, :insert_safe, :default_teardown],
+        [2, (0..12), (-1..-1), :array_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
+        [2, (0..15), (-1..-1), :hash_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
+    ].each{|args| @results += power_test(args)}
+  end
+
+  def test_insert_many
+    sizes = [0, 2, 4, 6, 8, 10, 12]
+    multi = [0, 2, 4, 6, 8, 10, 12]
+    [
+        [2, sizes, multi, :value_string_size, :null_setup, :insert, :default_teardown],
+        [2, sizes, multi, :key_string_size, :null_setup, :insert, :default_teardown],
+        [2, sizes, multi, :hash_size_fixnum, :null_setup, :insert, :default_teardown],
+        [2, sizes, multi, :array_size_fixnum, :null_setup, :insert, :default_teardown],
+        [2, sizes, multi, :array_nest_fixnum, :null_setup, :insert, :default_teardown],
+        [2, sizes, multi, :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
+    ].each{|args| @results += power_test(args)}
+  end
+
+  def test_insert_many_safe
+    sizes = [0, 2, 4, 6, 8, 10, 12]
+    multi = [0, 2, 4, 6, 8, 10, 12]
+    [
+        [2, sizes, multi, :value_string_size, :null_setup, :insert_safe, :default_teardown],
+        [2, sizes, multi, :key_string_size, :null_setup, :insert_safe, :default_teardown],
+        [2, sizes, multi, :hash_size_fixnum, :null_setup, :insert_safe, :default_teardown],
+        [2, sizes, multi, :array_size_fixnum, :null_setup, :insert_safe, :default_teardown],
+        [2, sizes, multi, :array_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
+        [2, sizes, multi, :hash_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
+    ].each{|args| @results += power_test(args)}
+  end
+
+  def test_find_one
+    [
+        [2, (0..15), (-1..-1), :value_string_size, :find_one_setup, :find_one, :default_teardown],
+        [2, (0..15), (-1..-1), :key_string_size, :find_one_setup, :find_one, :default_teardown],
+        [2, (0..14), (-1..-1), :array_size_fixnum, :find_one_setup, :find_one, :default_teardown],
+        [2, (0..17), (-1..-1), :hash_size_fixnum, :find_one_setup, :find_one, :default_teardown],
+        [2, (0..12), (-1..-1), :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
+        [2, (0..15), (-1..-1), :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
+    ].each{|args| @results += power_test(args)}
+  end
+
+  def test_find_many
+    [
+        [2, (0..15), (-1..-1), :value_string_size, :find_many_setup, :find_many, :find_many_teardown],
+        [2, (0..15), (-1..-1), :key_string_size, :find_many_setup, :find_many, :find_many_teardown],
+        [2, (0..14), (-1..-1), :array_size_fixnum, :find_many_setup, :find_many, :find_many_teardown],
+        [2, (0..17), (-1..-1), :hash_size_fixnum, :find_many_setup, :find_many, :find_many_teardown],
+        [2, (0..12), (-1..-1), :array_nest_fixnum, :find_many_setup, :find_many, :find_many_teardown],
+        [2, (0..15), (-1..-1), :hash_nest_fixnum, :find_many_setup, :find_many, :find_many_teardown],
+    ].each{|args| @results += power_test(args)}
+  end
+
+  def test_insert_one_nest_full
+    [
+        [4, (0..6), (-1..-1), :array_nest_fixnum, :null_setup, :insert, :default_teardown],
+        [8, (0..4), (-1..-1), :array_nest_fixnum, :null_setup, :insert, :default_teardown],
+        [16, (0..3), (-1..-1), :array_nest_fixnum, :null_setup, :insert, :default_teardown],
+        [32, (0..2), (-1..-1), :array_nest_fixnum, :null_setup, :insert, :default_teardown],
+        [4, (0..8), (-1..-1), :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
+        [8, (0..4), (-1..-1), :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
+        [16, (0..4), (-1..-1), :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
+        [32, (0..3), (-1..-1), :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
+    ].each{|args| @results += power_test(args)}
+  end
+
+  def test_find_one_nest_full
+    [
+        [4, (0..6), (-1..-1), :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
+        [8, (0..4), (-1..-1), :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
+        [16, (0..3), (-1..-1), :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
+        [32, (0..2), (-1..-1), :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
+        [4, (0..8), (-1..-1), :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
+        [8, (0..4), (-1..-1), :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
+        [16, (0..4), (-1..-1), :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
+        [32, (0..3), (-1..-1), :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
+    ].each{|args| @results += power_test(args)}
+  end
+
+  def xtest_update
+    [
+        # pending
+    ].each{|args| @results += power_test(args)}
+  end
+
+  def xtest_remove
+    [
+        # pending
+    ].each{|args| @results += power_test(args)}
+  end
+
+  # synthesized mix, real-world data pending
+
+end
+
+

bench/exp_series_suite_find_c.js

@@ -0,0 +1,190 @@
+exp_series_suite_find_c = [
+{"base":2,"power":0,"size":1,"exp2":0,"multi_power":-1,"multi_size":1,"generator":"value_string_size","operation":"find_one","iterations":94523,"user_time":16.15,"real_time":27.14,"user_ops":5852.8,"real_ops":3482.6,"user_usec":170.9,"real_usec":287.1,"est_time":2.78,"mode":"c","hostname":"osprey","osname":"Darwin","date":"20120510-2251","tag":"suite_find","status":"OK"},
+{"base":2,"power":1,"size":2,"exp2":1,"multi_power":-1,"multi_size":1,"generator":"value_string_size","operation":"find_one","iterations":89043,"user_time":15.93,"real_time":27.51,"user_ops":5589.6,"real_ops":3236.6,"user_usec":178.9,"real_usec":309.0,"est_time":2.92,"mode":"c","hostname":"osprey","osname":"Darwin","date":"20120510-2251","tag":"suite_find","status":"OK"},
+{"base":2,"power":2,"size":4,"exp2":2,"multi_power":-1,"multi_size":1,"generator":"value_string_size","operation":"find_one","iterations":89043,"user_time":15.03,"real_time":25.27,"user_ops":5924.4,"real_ops":3523.8,"user_usec":168.8,"real_usec":283.8,"est_time":2.87,"mode":"c","hostname":"osprey","osname":"Darwin","date":"20120510-2251","tag":"suite_find","status":"OK"},
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bench/exp_series_suite_find_ruby.js

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bench/exp_series_suite_insert_many_c.js

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bench/exp_series_suite_insert_many_ruby.js

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bench/exp_series_suite_insert_one_c.js

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bench/exp_series_suite_insert_one_ruby.js

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bench/exp_series_suite_nest_c.js

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bench/exp_series_suite_nest_ruby.js

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+{"base":8,"power":4,"size":4096,"exp2":12,"multi_power":-1,"multi_size":1,"generator":"hash_nest_fixnum","operation":"find_one","iterations":285,"user_time":14.85,"real_time":15.62,"user_ops":19.2,"real_ops":18.2,"user_usec":52105.3,"real_usec":54817.0,"est_time":2.45,"mode":"ruby","hostname":"osprey","osname":"Darwin","date":"20120511-1409","tag":"suite_nest","status":"OK"},
+{"base":16,"power":0,"size":1,"exp2":0,"multi_power":-1,"multi_size":1,"generator":"hash_nest_fixnum","operation":"find_one","iterations":80842,"user_time":16.3,"real_time":26.83,"user_ops":4959.6,"real_ops":3012.9,"user_usec":201.6,"real_usec":331.9,"est_time":2.93,"mode":"ruby","hostname":"osprey","osname":"Darwin","date":"20120511-1409","tag":"suite_nest","status":"OK"},
+{"base":16,"power":1,"size":16,"exp2":4,"multi_power":-1,"multi_size":1,"generator":"hash_nest_fixnum","operation":"find_one","iterations":42666,"user_time":15.05,"real_time":20.53,"user_ops":2835.0,"real_ops":2078.4,"user_usec":352.7,"real_usec":481.1,"est_time":2.54,"mode":"ruby","hostname":"osprey","osname":"Darwin","date":"20120511-1409","tag":"suite_nest","status":"OK"},
+{"base":16,"power":2,"size":256,"exp2":8,"multi_power":-1,"multi_size":1,"generator":"hash_nest_fixnum","operation":"find_one","iterations":5189,"user_time":14.96,"real_time":17.24,"user_ops":346.9,"real_ops":300.9,"user_usec":2883.0,"real_usec":3323.3,"est_time":2.21,"mode":"ruby","hostname":"osprey","osname":"Darwin","date":"20120511-1409","tag":"suite_nest","status":"OK"},
+{"base":16,"power":3,"size":4096,"exp2":12,"multi_power":-1,"multi_size":1,"generator":"hash_nest_fixnum","operation":"find_one","iterations":338,"user_time":15.07,"real_time":15.77,"user_ops":22.4,"real_ops":21.4,"user_usec":44585.8,"real_usec":46654.1,"est_time":2.17,"mode":"ruby","hostname":"osprey","osname":"Darwin","date":"20120511-1409","tag":"suite_nest","status":"OK"},
+{"base":16,"power":4,"size":65536,"exp2":16,"multi_power":-1,"multi_size":1,"generator":"hash_nest_fixnum","operation":"find_one","iterations":18,"user_time":14.48,"real_time":15.22,"user_ops":1.2,"real_ops":1.2,"user_usec":804444.4,"real_usec":845653.3,"est_time":3.53,"mode":"ruby","hostname":"osprey","osname":"Darwin","date":"20120511-1409","tag":"suite_nest","status":"OK"},
+{"base":32,"power":0,"size":1,"exp2":0,"multi_power":-1,"multi_size":1,"generator":"hash_nest_fixnum","operation":"find_one","iterations":77772,"user_time":14.9,"real_time":23.8,"user_ops":5219.6,"real_ops":3267.7,"user_usec":191.6,"real_usec":306.0,"est_time":3.03,"mode":"ruby","hostname":"osprey","osname":"Darwin","date":"20120511-1409","tag":"suite_nest","status":"OK"},
+{"base":32,"power":1,"size":32,"exp2":5,"multi_power":-1,"multi_size":1,"generator":"hash_nest_fixnum","operation":"find_one","iterations":30117,"user_time":15.3,"real_time":19.7,"user_ops":1968.4,"real_ops":1529.0,"user_usec":508.0,"real_usec":654.0,"est_time":1.84,"mode":"ruby","hostname":"osprey","osname":"Darwin","date":"20120511-1409","tag":"suite_nest","status":"OK"},
+{"base":32,"power":2,"size":1024,"exp2":10,"multi_power":-1,"multi_size":1,"generator":"hash_nest_fixnum","operation":"find_one","iterations":1454,"user_time":15.05,"real_time":15.99,"user_ops":96.6,"real_ops":90.9,"user_usec":10350.8,"real_usec":10998.1,"est_time":2.09,"mode":"ruby","hostname":"osprey","osname":"Darwin","date":"20120511-1409","tag":"suite_nest","status":"OK"},
+{"base":32,"power":3,"size":32768,"exp2":15,"multi_power":-1,"multi_size":1,"generator":"hash_nest_fixnum","operation":"find_one","iterations":40,"user_time":14.69,"real_time":15.44,"user_ops":2.7,"real_ops":2.6,"user_usec":367250.0,"real_usec":386045.2,"est_time":1.83,"mode":"ruby","hostname":"osprey","osname":"Darwin","date":"20120511-1409","tag":"suite_nest","status":"OK"},
+]; // 28 minutes

bench/gridstore_benchmark

@@ -3,7 +3,6 @@ require 'rubygems'
 require 'mongo'
 
 include Mongo
-include GridFS
 
 db = Connection.new['benchmark-gridfs']
 sample_data = File.open(File.join(File.dirname(__FILE__), 'sample_file.pdf'), 'r').read
@@ -15,20 +14,22 @@ length = sample_data.length
 mb     = T * length / 1048576.0
 
 @grid = Grid.new(db)
+@grid_file_system = GridFileSystem.new(db)
+
 t1 = Time.now
 ids = []
 T.times do |n|
-  ids << @grid.put(sample_data, "mongodb-new-#{n}.pdf")
+  ids << @grid.put(sample_data, :filename => "mongodb-new-#{n}.pdf")
 end
 puts "Grid Write: #{mb / (Time.now - t1)} mb/s"
 
 t1 = Time.now
 T.times do |n|
-  GridStore.open(db, "mongodb.pdf-#{n}", 'w') do |f|
+  @grid_file_system.open("mongodb.pdf-#{n}", 'w') do |f|
     f.write(sample_data)
   end
 end
-puts "GridStore Write: #{mb / (Time.now - t1)} mb/s"
+puts "GridFileSystem Write: #{mb / (Time.now - t1)} mb/s"
 
 t1 = Time.now
 T.times do |n|
@@ -38,8 +39,8 @@ puts "Grid Read: #{mb / (Time.now - t1)} mb/s"
 
 t1 = Time.now
 T.times do |n|
-  old_data = GridStore.open(db, "mongodb.pdf-#{n}", 'r') do |f|
+  old_data = @grid_file_system.open("mongodb.pdf-#{n}", 'r') do |f|
     f.read
   end
 end
-puts "GridStore Read: #{mb / (Time.now - t1)} mb/s"
+puts "GridFileSystem Read: #{mb / (Time.now - t1)} mb/s"

bench/profile_array.rb

@@ -0,0 +1,95 @@
+#!/usr/bin/env ruby
+$LOAD_PATH.unshift(File.expand_path("../../lib", __FILE__))
+
+def set_mongo_driver_mode(mode)
+  case mode
+    when :c
+      ENV.delete('TEST_MODE')
+      ENV['C_EXT'] = 'TRUE'
+    when :ruby
+      ENV['TEST_MODE'] = 'TRUE'
+      ENV.delete('C_EXT')
+    else
+      raise 'mode must be :c or :ruby'
+  end
+  ENV['MONGO_DRIVER_MODE'] = mode.to_s
+end
+
+$mode = ARGV[0].to_sym if ARGV[0]
+set_mongo_driver_mode($mode || :c)
+
+require 'rubygems'
+require 'mongo'
+require 'benchmark'
+require 'ruby-prof'
+
+def array_size_fixnum(base, power)
+  n = base ** power
+  return [n, {n.to_s => Array.new(n, n)}]
+end
+
+def array_size_fixnum(base, power)
+  n = base ** power
+  return [n, {n.to_s => Array.new(n, n)}]
+end
+
+def insert(coll, h)
+  h.delete(:_id) # delete :_id to insert
+  coll.insert(h) # note that insert stores :_id in h and subsequent inserts are updates
+end
+
+def benchmark(iterations)
+  btms = Benchmark.measure do
+    (0...iterations).each do
+      yield
+    end
+  end
+  utime = btms.utime
+  p ({'ops' => (iterations.to_f / utime.to_f).round(1)})
+end
+
+def ruby_prof(iterations)
+  RubyProf.start
+  puts Benchmark.measure {
+    iterations.times { yield }
+  }
+  result = RubyProf.stop
+
+  # Print a flat profile to text
+  printer = RubyProf::FlatPrinter.new(result)
+  printer.print(STDOUT)
+
+  # Print a graph profile to text
+  printer = RubyProf::GraphPrinter.new(result)
+  printer.print(STDOUT, {})
+end
+
+#def perftools(iterations)
+#  profile_file_name = '/tmp/profile_array.perftools'
+#  PerfTools::CpuProfiler.start(profile_file_name) do
+#    iterations.times { yield }
+#  end
+#  cmd = "pprof.rb --ignore=IO --text \"#{profile_file_name}\""
+#  system(cmd)
+#end
+
+conn = Mongo::Connection.new
+
+db  = conn['benchmark']
+coll = db['profile']
+
+coll.remove
+#puts "coll.count: #{coll.count}"
+
+base = 2
+power = 6
+n, doc = array_size_fixnum(base, power)
+p ({'generator' => 'array_size_fixnum', 'operation' => 'insert',  'base' => base, 'power' => power})
+
+benchmark(10000) { insert(coll, doc)} # valgrind --tool=callgrind ruby bench/profile_array.rb; callgrind_annotate ...
+#ruby_prof(1000) { insert(coll, doc) }
+#perftools(10000) { insert(coll, doc) }
+
+#puts "coll.count: #{coll.count}"
+coll.remove
+

bench/standard_benchmark

@@ -1,5 +1,5 @@
 #!/usr/bin/env ruby
-#$LOAD_PATH[0,0] = File.join(File.dirname(__FILE__), '..', 'lib')
+$LOAD_PATH[0,0] = File.join(File.dirname(__FILE__), '..', 'lib')
 #
 # Note: Ruby 1.9 is faster than 1.8, as expected.
 # This suite will be run against the installed version of ruby-mongo-driver.

bin/b2json

@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 # encoding: UTF-8
 
 # --

bin/j2bson

@@ -1,4 +1,4 @@
-#!/usr/bin/ruby
+#!/usr/bin/env ruby
 # encoding: UTF-8
 
 # --

bson.gemspec

@@ -1,4 +1,5 @@
-require "./lib/bson"
+$:.unshift(File.join(File.dirname(__FILE__), 'lib'))
+require 'bson'
 
 Gem::Specification.new do |s|
   s.name = 'bson'
@@ -14,7 +15,7 @@ Gem::Specification.new do |s|
   s.files  = ['LICENSE.txt']
   s.files += ['lib/bson.rb'] + Dir['lib/bson/**/*.rb']
   s.files += ['bin/b2json', 'bin/j2bson']
-  s.test_files = Dir['test/bson/*.rb']
+  s.test_files = Dir['test/bson/*.rb', 'test/support/hash_with_indifferent_access.rb']
 
   s.executables = ['b2json', 'j2bson']
 

bson.java.gemspec

@@ -1,4 +1,5 @@
-require "./lib/bson"
+$:.unshift(File.join(File.dirname(__FILE__), 'lib'))
+require 'bson'
 
 Gem::Specification.new do |s|
   s.name = 'bson'
@@ -14,7 +15,7 @@ Gem::Specification.new do |s|
   s.files  = ['LICENSE.txt']
   s.files += ['lib/bson.rb'] + Dir['lib/bson/**/*.rb']
   s.files += ['bin/b2json', 'bin/j2bson']
-  s.files += ["ext/java/jar/bson-2.2.jar", "ext/java/jar/jbson.jar", "ext/java/jar/mongo-2.4.jar"]
+  s.files += ['ext/java/jar/jbson.jar', 'ext/java/jar/mongo-2.6.5.jar']
   s.test_files = Dir['test/bson/*.rb']
 
   s.executables = ['b2json', 'j2bson']

bson_ext.gemspec

@@ -1,6 +1,8 @@
-require './lib/bson'
+$:.unshift(File.join(File.dirname(__FILE__), 'lib'))
+require 'bson'
+
 VERSION_HEADER = File.open(File.join(File.dirname(__FILE__), 'ext', 'cbson', 'version.h'), "r")
-VERSION        = VERSION_HEADER.read.scan(/VERSION\s+"(\d+\.\d+(\.[\w\d]+\w*)?)\"/)[0][0]
+VERSION        = VERSION_HEADER.read.scan(/VERSION "(\d[^"]+)"/)[0][0]
 Gem::Specification.new do |s|
   s.name = 'bson_ext'
 
@@ -17,7 +19,8 @@ Gem::Specification.new do |s|
   s.has_rdoc = false
   s.extensions << 'ext/cbson/extconf.rb'
 
-  s.author = 'Mike Dirolf'
+  s.authors = ['Mike Dirolf', 'Kyle Banker', 'Tyler Brock', 'Gary Murakami']
   s.email = 'mongodb-dev@googlegroups.com'
   s.homepage = 'http://www.mongodb.org'
+  s.add_dependency('bson', "~> #{BSON::VERSION}")
 end

docs/1.0_UPGRADE.md

@@ -1,21 +0,0 @@
-You can upgrade freely from v0.20 to v1.0.
-
-However, if you're running a version < 0.20, upgrade to 0.20
-before upgrading to 1.0.
-
-The upgrade to 0.20 requires some minor code upgrades.
-
-1. Note the exception changes in HISTORY. Certain exceptions are now scoped under the BSON
-module; if you're catching these, you will need to modify your code.
-
-2. The BSON types are now scoped under the BSON module.
-
-3. Note that mongo_ext no longer exists. The new gems are bson and bson_ext.
-
-4. Indexes on GridFS chunks collections should be unique. If you have existing GridFS
-collections, you should drop the current index and replace with a unique one. Before you do this,
-make sure that index doesn't exist; no need to go through process unnecessarily.
-If you do need to create the index, once you have the chunks collection, here are the commands you can run:
-
-    @chunks.drop_index('files_id_1_n_1')
-    @chunks.create_index([['files_id', Mongo::ASCENDING], ['n', Mongo::ASCENDING]], :unique => true)

docs/FAQ.md

@@ -110,3 +110,7 @@ Without further investigation, it's impossible to know exactly what has caused t
 Because of the indeterminacy involved, the MongoDB drivers will not retry operations on connection failure. How connection failures should be handled is entirely dependent on the application. Therefore, we leave it to the application developers to make the best decision in this case.
 
 The drivers will reconnect on the subsequent operation.
+
+#### I ocassionally get an error saying that responses are out of order. What's happening?
+
+See (this JIRA issue)[http://jira.mongodb.org/browse/RUBY-221].

docs/GridFS.md

@@ -88,7 +88,7 @@ Deleting a file is as simple as providing the id:
 
 ### The GridFileSystem class
 
-[GridFileSystem](http://api.mongodb.org/ruby/current/Mongo/GridFileSystem.html) is a light emulation of a file system and therefore has a couple of unique properties. The first is that filenames are assumed to be unique. The second, a consequence of the first, is that files are versioned. To see what this means, let's create a GridFileSystem instance:
+[GridFileSystem](Mongo/GridFileSystem.html) is a light emulation of a file system and therefore has a couple of unique properties. The first is that filenames are assumed to be unique. The second, a consequence of the first, is that files are versioned. To see what this means, let's create a GridFileSystem instance:
 
 #### Saving files
 
@@ -154,5 +154,5 @@ All of the options for storing metadata and saving in safe mode are available fo
 
 ### Advanced Users
 
-Astute code readers will notice that the Grid and GridFileSystem classes are merely thin wrappers around an underlying [GridIO class](http://api.mongodb.org/ruby/current/Mongo/GridIO.html). This means that it's easy to customize the GridFS implementation presented here; just use GridIO for all the low-level work, and build the API you need in an external manager class similar to Grid or GridFileSystem.
+Astute code readers will notice that the Grid and GridFileSystem classes are merely thin wrappers around an underlying [GridIO class](Mongo/GridIO.html). This means that it's easy to customize the GridFS implementation presented here; just use GridIO for all the low-level work, and build the API you need in an external manager class similar to Grid or GridFileSystem.
 

docs/HISTORY.md

@@ -1,9 +1,178 @@
 # MongoDB Ruby Driver History
 
-1.2.rc0
+### 1.6.2
+2012-04-05
+
+* Implements socket timeouts via non-blocking IO instead of Timeout module
+which should greately increase performance in highly threaded applications
+* Added ability to authentication via secondary if primary node unavailable
+* Replica set refresh interval now enforces a lower bound of 60 seconds
+* Added documentation for dropping indexes, collections, databases
+* Test output cleanup (...)s unless failure occurs
+
+### 1.6.1
+2012-03-07
+
+* Added thread affinity to Mongo::Pool
+* Added deploy tasks
+* Added Travis CI support (Cyril Mougel)
+* Logging warning message is only displayed for level :debug
+
+### 1.6.0
+2012-02-22
+
+* Added Gemfile
+* ReplSetConnection seed format is now array of 'host:port' strings
+* Added read preference :secondary_only
+* Added ability to log duration -- enabled by default (Cyril Mougel)
+* Added read_only option for DB#add_user (Ariel Salomon)
+* Added :collect_on_error option for bulk-insert (Masahiro Nakagawa)
+* Added and updated URI options (now case insensitive)
+* Bug fix for ReplSet refresh attempting to close a closed socket
+* Default op_timeout for ReplSetConnection is now disabled (was 30 seconds)
+* Support db output option for map reduce (John Ewart)
+* Support for keeping limited versions of files using GridFS (VvanGemert)
+
+### 1.5.2
+2011-12-13
+
+* Lots of fixes for replica set connection edge cases.
+* Set default op_timeout and connect_timeout to 30 seconds.
+* Support GeoHaystack indexing.
+
+### 1.5.1
+2011-11-29
+
+Release due to corrupted gemspec. This was a bug having
+to do with rubygems. Apparently, gems must still be
+built with Ruby 1.8.
+
+### 1.5.0
+2011-11-28
+
+This releases fixes bugs introduced in 1.4.0 and 1.4.1 that
+were introduced as a result of adding replica set refresh modes.
+
+* Removed :async refresh mode.
+* Disabled auto refresh mode by default. If you want the driver
+to automatically check the state of the replica set, you must
+use :sync mode. Note that replica set refresh is designed only to
+account for benign changes to the replica set (adding and removing
+nodes that don't affect current connections).
+* Fixed bug with commands being sent to secondary nodes. The next
+release will allow you to specify where commands can be sent.
+* Support :j safe mode option.
+* Fix :max_scan and :show_disk_loc Cursor options.
+
+You can see the remaining issues at https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10005&version=10992
+
+### 1.5.0.rc0
+2011-11-18
+
+Fix bugs associated with replica set refresh.
+
+### 1.4.1
+2011-10-17
+
+If you're using 1.4.0, this is a necessary upgrade.
+
+* Simplified replica set refresh.
+* Fix bugs associated with replica set refresh.
+* Make cursor smart enough to continue functioning
+even if a refresh is triggered.
+
+### 1.4.0
+2011-9-19
+
+* Attempt to automatically refresh internal replica set state using ReplSetConnection#refresh.
+* Two automated refresh modes: :async and :sync. Automated refresh can also be disabled.
+* Choose secondary for reads based on ping time.
+* Read preference API: specify whether queries should go to primary or secondary on a per-query basis.
+* Pass :require_primary => false to ReplSetConnection to connect without requiring a primary node.
+* Enable exhaust-mode queries with OP_QUERY_EXHAUST.
+* Collection#count takes a query selector.
+* Support continue_on_error flag for bulk inserts (use :continue_on_error => true)
+* Add Cursor#add_option. Deprecate Cursor#query_opts and replace with Cursor#options.
+* Initial SSL support (connect with :ssl => true)
+* Update to latest Java driver for JRuby.
+* Check max BSON size on a per-connection basis.
+* Fixed two platform-specific BSON serialization issues.
+* Lots of bug fixes and code cleanup.
+
+### 1.3.1
+2011-5-10
+
+* Fix GridIO#gets infinite loop error (Ryan McGeary)
+* Fix BSON::OrderedHash#reject! leaving keys with null values (rpt. by Ben Poweski)
+* Minor semantic fix for OrderedHash#reject!
+* Fix Mongo::DB to allow symbols in method traversing collection names (rpt. by Chris Griego)
+* Support new server regex option "s" (dotall). This is folded in with \m in Ruby.
+* Fix so that Cursor#close hits the right node when :read_secondary is enabled.
+* Support maxScan, showDiskLoc, and returnKey cursor options.
+* Make DB#validate_collection compatible with server v1.9.1.
+* Fix so that GridIO#gets returns local md5 with md5 matches server md5 (Steve Tantra).
+* Fix bug in BSON::OrderedHash that prevents YAML.load (Ian Warshak).
+* Fix example from /examples.
+* Ensure that we do not modify hash arguments by calling Hash#dup when appropriate.
+* Ensure that JRuby deserializer preserves binary subtypes properly.
+* Fix for streaming an empty file into GridFS (Daniël van de Burgt).
+* Minor doc fixes.
+
+### 1.3.0
+2011-4-04
+
+* Add option to set timeouts on socket read calls using the
+  Mongo::Connection :op_timeout option.
+* Add StringIO methods to GridIO objects
+* Support for BSON timestamp type with BSON::Timestamp
+* Change the BSON binary subtype from 2 to 0
+* Remove private method Connection#reset_conection
+  and deprecate public method ReplSetConnection#reset_connection
+* ByteBuffer#== and OrderedHash#dup (Hongli Lai)
+* Better check for UTF8 validity in Ruby 1.9
+* Added previously removed Connection#host and Connection#port
+* Added transformers to allow Mongo::Cursor to allow instantiated objects (John Nunemaker)
+* Automated reconnection on fork
+* Added Cursor#next alias for Cursor#next_document
+* Audit tests after enabling warnings (Wojciech Piekutowski)
+* Various bug fixes thanks to Datanoise, Hongli Lai, and Mauro Pompilio
+
+### 1.2.4
+2011-2-23
+
+* Fix the exception message shown when there's an IOError (Mauro Pompilio)
+* Another update to map-reduce docs for v1.8. Note that if you use the new
+  output option `{:out => {:inline => true}}`, then you must also specify
+  `:raw => true`.
+
+### 1.2.3
+2011-2-22
+
+* Update docs for map-reduce command
+* Minor doc fix
+
+### 1.2.2
+2011-2-15
+
+* Improved replica set failover for edge case.
+* Fix for REE on OSX (Hongli Lai)
+
+### 1.2.1
+2011-1-18
+
+* Enable authentication with connection pooling.
+* Allow custom logging with Connection#instrument (CodeMonkeySteve)
+* Minor fixes and doc improvements.
+
+### 1.2.0
+2011-1-18
+
+* Some minor improvements. See commit history.
+
+### 1.2.rc0
 2011-1-5
 
-Lots of cleanp and minor bug fixes.
+Lots of cleanup and minor bug fixes.
 * Issues resolved: http://jira.mongodb.org/browse/RUBY/fixforversion/10222
 * Updated Java BSON to Java driver 2.4.
 * Platform gem for JRuby bson.

docs/READ_PREFERENCE.md

@@ -0,0 +1,39 @@
+# Read Preference in Ruby
+
+## Setting the read preference
+
+You can using the `:read` option to specify a query's read preference. There are for now two possible options:
+
+    @collection.find({:doc => 'foo'}, :read => :primary)
+    @collection.find({:doc => 'foo'}, :read => :secondary)
+
+In the first case, the query will be directed to the primary node in a replica set. In the second, the query will be sent
+to a secondary node. The driver will attempt to choose a secondary node that's nearby, as determined by ping time. If more
+than one secondary node is closeby (e.g, responds to pings within 10ms), then a random node within this subset will be chosen.
+
+## Read preference inheritance
+
+The Ruby driver allows you to set read preference on each of four levels: the connection, database, collection, and cursor (or read operation).
+Objects will inherit the default read preference from their parents. Thus, if you set a read preference of `{:read => :secondary}` when creating
+a new connection, then all databases and collections created from that connection will inherit the same setting. See this code example:
+
+    @con = Mongo::ReplSetConnection.new(['localhost:27017','localhost:27018'], :read => :secondary)
+    @db  = @con['test']
+    @collection = @db['foo']
+    @collection.find({:name => 'foo'})
+
+    @collection.find({:name => 'bar'}, :read => :primary)
+
+Here, the first call to Collection#find will use the inherited read preference, `{:read => :secondary}`. But the second call
+to Collection#find overrides this setting by setting the preference to `:primary`.
+
+You can examine the read preference on any object by calling its `read_preference` method:
+
+    @con.read_preference
+    @db.read_preference
+    @collection.read_preference
+
+## Future work
+
+In the v2.0 release of the driver, you'll also be able to specify a read preference consisting of a set of tags. This way,
+you'll be able to direct reads to a replica set member. You can follow this issue's progress here: (https://jira.mongodb.org/browse/RUBY-326).

docs/RELEASES.md

@@ -0,0 +1,54 @@
+# MongoDB Ruby Driver Release Plan
+
+This is a description of a formalized release plan that will take effect
+with version 1.3.0.
+
+## Semantic versioning
+
+The most significant difference is that releases will now adhere to the conventions of
+[semantic versioning](http://semver.org). In particular, we will strictly abide by the
+following release rules:
+
+1. Patch versions of the driver (Z in x.y.Z) will be released only when backward-compatible bug fixes are introduced. A bug fix is defined as an internal change that fixes incorrect behavior.
+
+2. Minor versions (Y in x.Y.z) will be released if new, backward-compatible functionality is introduced to the public API.
+
+3. Major versions (X in X.y.z) will be incremented if any backward-incompatible changes are introduced to the public API.
+
+This policy will clearly indicate to users when an upgrade may affect their code. As a side effect, version numbers will climb more quickly than before.
+
+
+## Release checklist
+
+Before each relese to Rubygems.org, the following steps will be taken:
+
+1. All driver tests will be run on Linux, OS X, and Windows via continuous integration system.
+
+2. Update the HISTORY file and document all significant commits.
+
+3. Update the version in lib/bson.rb, lib/mongo/version.rb, and ext/version.h.
+
+4. Commit: "Release [VERSION]"
+
+5. git tag [version]
+
+6. Build gems. Ensure that they have the correct versions.
+
+7. Push tags and commit to GitHub (git push origin master, git push --tags).
+
+8. Build and push docs.
+
+9. Push gems to Rubygems.org.
+
+10. Test that the gem is downloadable from Rubygems.org.
+
+11. Close out release in JIRA.
+
+12. Annouce release on mongodb-user and mongodb-dev.
+
+## Rake Deploy Tasks
+1. rake deploy:change_version[1.6.1]
+2. rake deploy:git_prepare
+3. rake deploy:git_push
+4. rake deploy:gem_build
+5. rake deploy:gem_push

docs/REPLICA_SETS.md

@@ -6,18 +6,19 @@ Here follow a few considerations for those using the MongoDB Ruby driver with [r
 
 First, make sure that you've configured and initialized a replica set.
 
-Use `ReplSetConnection.new` to connect to a replica set:
+Use `ReplSetConnection.new` to connect to a replica set. This method, which accepts a variable number of arugments,
+takes a list of seed nodes followed by any connection options. You'll want to specify at least two seed nodes. This gives
+the driver more chances to connect in the event that any one seed node is offline. Once the driver connects, it will
+cache the replica set topology as reported by the given seed node and use that information if a failover is later required.
 
-    @connection = ReplSetConnection.new(['n1.mydb.net', 27017], ['n2.mydb.net', 27017], ['n3.mydb.net', 27017])
+    @connection = ReplSetConnection.new(['n1.mydb.net:27017', 'n2.mydb.net:27017', 'n3.mydb.net:27017'])
-
-The driver will attempt to connect to a master node and, when found, will replace all seed nodes with known members of the replica set.
 
 ### Read slaves
 
-If you want to read from a seconday node, you can pass :read_secondary => true to ReplSetConnection#new.
+If you want to read from a secondary node, you can pass :read => :secondary to ReplSetConnection#new.
 
-    @connection = ReplSetConnection.new(['n1.mydb.net', 27017], ['n2.mydb.net', 27017], ['n3.mydb.net', 27017],
+    @connection = ReplSetConnection.new(['n1.mydb.net:27017', 'n2.mydb.net:27017', 'n3.mydb.net:27017'],
-                  :read_secondary => true)
+                  :read => :secondary)
 
 A random secondary will be chosen to be read from. In a typical multi-process Ruby application, you'll have a good distribution of reads across secondary nodes.
 
@@ -27,10 +28,51 @@ Imagine that either the master node or one of the read nodes goes offline. How w
 
 If any read operation fails, the driver will raise a *ConnectionFailure* exception. It then becomes the client's responsibility to decide how to handle this.
 
-If the client decides to retry, it's not guaranteed that another member of the replica set will have been promoted to master right away, so it's still possible that the driver will raise another *ConnectionFailure*. However, once a member has been promoted to master, typically within a few seconds, subsequent operations will succeed.
+If the client decides to retry, it's not guaranteed that another member of the replica set will have been promoted to master right away, so it's still possible that the driver will raise another *ConnectionFailure*. However, once a member has been promoted to master, typically within a few seconds, subsequent operations will succeed. *Note that this does not prevent
+exception in the event of a primary failover.*
 
 The driver will essentially cycle through all known seed addresses until a node identifies itself as master.
 
+### Refresh mode
+
+You can now specify a refresh mode and refresh interval for a replica set connection. This will help to ensure that
+changes to a replica set's configuration are quickly reflected on the driver side. In particular, if you change
+the state of any secondary node, the automated refresh will ensure that this state is recorded on the client side.
+
+There are two secenarios in which refresh is helpful and does not raise exceptions:
+
+1. You add a new secondary node to an existing replica set
+2. You remove an unused secondary from an existing replica set
+
+If using MongoDB earlier than 2.0 any changes to replica set state will raise exceptions therefore refresh mode will not be useful.
+
+If you add a secondary that responds to pings much faster than the existing nodes, then the new secondary will
+be used for reads if :read_preference is :secondary or :secondary_only
+
+Refresh mode is disabled by default.
+
+However, if you expect to make live changes to your secondaries, and you want this to be reflected without
+having to manually restart your app server, then you should enable it. You can enable this mode
+synchronously, which will refresh the replica set data in a synchronous fashion (which may
+ocassionally slow down your queries):
+
+    @connection = ReplSetConnection.new(['n1.mydb.net:27017'], :refresh_mode => :sync)
+
+If you want to change the default refresh interval of 90 seconds, you can do so like this:
+
+    @connection = ReplSetConnection.new(['n1.mydb.net:27017'], :refresh_mode => :sync,
+        :refresh_interval => 60)
+
+Do not set this value to anything lower than 30, or you may start to experience performance issues.
+
+You can also disable refresh mode altogether:
+
+    @connection = ReplSetConnection.new(['n1.mydb.net:27017'], :refresh_mode => false)
+
+And you can call `refresh` manually on any replica set connection:
+
+    @connection.refresh
+
 ### Recovery
 
 Driver users may wish to wrap their database calls with failure recovery code. Here's one possibility, which will attempt to connection
@@ -63,7 +105,7 @@ The Ruby driver (>= 1.1.5) includes unit tests for verifying replica set behavio
     rake test:rs
 
 The suite will set up a five-node replica set by itself and ensure that driver behaves correctly even in the face
-of individual node failures. Node that the `mongod` executable must be in the search path for this to work.
+of individual node failures. Note that the `mongod` executable must be in the search path for this to work.
 
 ### Further Reading
 

docs/TAILABLE_CURSORS.md

@@ -0,0 +1,51 @@
+# Tailable cursors in Ruby
+
+Tailable cursors are cursors that remain open even after they've returned
+a final result. This way, if more documents are added to a collection (i.e.,
+to the cursor's result set), then you can continue to call `Cursor#next` to
+retrieve those results. Here's a complete test case that demonstrates the use
+of tailable cursors.
+
+Note that tailable cursors are for capped collections only.
+
+      require 'mongo'
+      require 'test/unit'
+
+      class TestTailable < Test::Unit::TestCase
+        include Mongo
+
+        def test_tailable
+
+          # Create a connection and capped collection.
+          @con = Connection.new
+          @db  = @con['test']
+          @db.drop_collection('log')
+          @capped = @db.create_collection('log', :capped => true, :size => 1024)
+
+          # Insert 10 documents.
+          10.times do |n|
+            @capped.insert({:n => n})
+          end
+
+          # Create a tailable cursor that iterates the collection in natural order
+          @tail = Cursor.new(@capped, :tailable => true, :order => [['$natural', 1]])
+
+          # Call Cursor#next 10 times. Each call returns a document.
+          10.times do
+            assert @tail.next
+          end
+
+          # But the 11th time, the cursor returns nothing.
+          assert_nil @tail.next
+
+          # Add a document to the capped collection.
+          @capped.insert({:n => 100})
+
+          # Now call Cursor#next again. This will return the just-inserted result.
+          assert @tail.next
+
+          # Close the cursor.
+          @tail.close
+        end
+
+      end

docs/TUTORIAL.md

@@ -9,13 +9,16 @@ As always, the [latest source for the Ruby driver](http://github.com/mongodb/mon
 ## Installation
 
 The mongo-ruby-driver gem is served through Rubygems.org. To install, make sure you have the latest version of rubygems.
+
     gem update --system
+
 Next, install the mongo rubygem:
+
     gem install mongo
 
 The required `bson` gem will be installed automatically.
 
-For optimum performance, install the bson_ext gem:
+For optimum performance, install the bson\_ext gem:
 
     gem install bson_ext
 
@@ -23,35 +26,46 @@ After installing, you may want to look at the [examples](http://github.com/mongo
 
 ## Getting started
 
-#### Using the gem
+Note that the output in the following has been updated to Ruby 1.9, so if you are using Ruby 1.8, you will see some minor differences.  To follow this tutorial interactively, at the command line, run the Interactive Ruby Shell.
 
-All of the code here assumes that you have already executed the following Ruby code:
+    irb
+
+As you execute commands, irb will output the result using the `inspect` method.  If you are editing and running a script for this tutorial, you can view output using the `puts` or `p` methods.
+
+### Using the gem
+
+Use the `mongo` gem via the `require` kernel method.
 
     require 'rubygems'  # not necessary for Ruby 1.9
     require 'mongo'
 
-#### Making a Connection
+### Making a Connection
 
-An `Mongo::Connection` instance represents a connection to MongoDB. You use a Connection instance to obtain an Mongo:DB instance, which represents a named database. The database doesn't have to exist - if it doesn't, MongoDB will create it for you.
+An `Mongo::Connection` instance represents a connection to MongoDB.  You can optionally specify the MongoDB server address and port when connecting. The following example shows three ways to connect to the local machine:
 
-You can optionally specify the MongoDB server address and port when connecting. The following example shows three ways to connect to the database "mydb" on the local machine:
+    connection = Mongo::Connection.new # (optional host/port args)
+    connection = Mongo::Connection.new("localhost")
+    connection = Mongo::Connection.new("localhost", 27017)
 
+### Listing All Databases
+
+    connection.database_names
+    connection.database_info.each { |info| puts info.inspect }
+
+The `database_info` method returns a hash mapping database names to the size of the database in bytes.
+
+## Using a Database
+
+You use a Connection instance to obtain an Mongo::DB instance, which represents a named database. The database doesn't have to exist - if it doesn't, MongoDB will create it for you. The following examples use the database "mydb":
+
+    db = connection.db("mydb")
     db = Mongo::Connection.new.db("mydb")
-    db = Mongo::Connection.new("localhost").db("mydb")
-    db = Mongo::Connection.new("localhost", 27017).db("mydb")
 
 At this point, the `db` object will be a connection to a MongoDB server for the specified database. Each DB instance uses a separate socket connection to the server.
 
 If you're trying to connect to a replica set, see [Replica Sets in Ruby](http://www.mongodb.org/display/DOCS/Replica+Sets+in+Ruby).
 
-#### Listing All Databases
+### Authentication
-
-    connection = Mongo::Connection.new # (optional host/port args)
-    connection.database_names.each { |name| puts name }
-    connection.database_info.each { |info| puts info.inspect}
-
-    #### Dropping a Database
-    connection.drop_database('database_name')
 
 MongoDB can be run in a secure mode where access to databases is controlled through name and password authentication.  When run in this mode, any client application must provide a name and password before doing any operations.  In the Ruby driver, you simply do the following with the connected mongo object:
 
@@ -59,31 +73,21 @@ MongoDB can be run in a secure mode where access to databases is controlled thro
 
 If the name and password are valid for the database, `auth` will be `true`.  Otherwise, it will be `false`.  You should look at the MongoDB log for further information if available.
 
-#### Getting a List Of Collections
+## Using a Collection
-
-Each database has zero or more collections.  You can retrieve a list of them from the db (and print out any that are there):
-
-    db.collection_names.each { |name| puts name }
-
-and assuming that there are two collections, name and address, in the database, you would see
-
-    name
-    address
-
-as the output.
-
-#### Getting a Collection
 
 You can get a collection to use using the `collection` method:
+
     coll = db.collection("testCollection")
+
 This is aliased to the \[\] method:
+
     coll = db["testCollection"]
 
-Once you have this collection object, you can now do things like insert data, query for data, etc.
+Once you have this collection object, you can now do create, read, update, and delete (CRUD) functions on persistent storage.
 
-#### Inserting a Document
+### Creating Documents with `insert`
 
-Once you have the collection object, you can insert documents into the collection.  For example, lets make a little document that in JSON would be represented as
+Once you have the collection object, you can create or `insert` documents into the collection.  For example, lets make a little document that in JSON would be represented as
 
       {
          "name" : "MongoDB",
@@ -95,115 +99,170 @@ Once you have the collection object, you can insert documents into the collectio
                    }
       }
 
-Notice that the above has an "inner" document embedded within it.  To do this, we can use a Hash or the driver's OrderedHash (which preserves key order) to create the document (including the inner document), and then just simply insert it into the collection using the `insert()` method.
+Notice that the above has an "inner" document embedded within it.  To do this, we can use a Hash or the driver's OrderedHash (which preserves key order) to create the document (including the inner document), and then just simply insert it into the collection using the `insert` method.
 
-    doc = {"name" => "MongoDB", "type" => "database", "count" => 1,
+    doc = {"name" => "MongoDB", "type" => "database", "count" => 1, "info" => {"x" => 203, "y" => '102'}}
-           "info" => {"x" => 203, "y" => '102'`
+    id = coll.insert(doc)
-    coll.insert(doc)
 
-#### Updating a Document
+We have saved the `id` for future use below.  Now the collection has been created and you can list it.
 
-We can update the previous document using the `update` method. There are a couple ways to update a document. We can rewrite it:
+#### Getting a List Of Collections
 
-    doc["name"] = "MongoDB Ruby"
+Each database has zero or more collections.  You can retrieve a list of them from the db (and print out any that are there):
-    coll.update({"_id" => doc["_id"]}, doc)
 
-Or we can use an atomic operator to change a single value:
+	db.collection_names
 
-    coll.update({"_id" => doc["_id"]}, {"$set" => {"name" => "MongoDB Ruby"`)
+You should see
 
-Read [more about updating documents|Updating].
+	\["testCollection", "system.indexes"\]
-
-#### Finding the First Document In a Collection using `find_one()`
-
-To show that the document we inserted in the previous step is there, we can do a simple `find_one()` operation to get the first document in the collection.  This method returns a single document (rather than the `Cursor` that the `find()` operation returns).
-
-    my_doc = coll.find_one()
-    puts my_doc.inspect
-
-and you should see:
-
-    {"_id"=>#<BSON::ObjectID:0x118576c ...>, "name"=>"MongoDB",
-     "info"=>{"x"=>203, "y"=>102}, "type"=>"database", "count"=>1}
-
-Note the `\_id` element has been added automatically by MongoDB to your document.
 
 #### Adding Multiple Documents
 
 To demonstrate some more interesting queries, let's add multiple simple documents to the collection.  These documents will have the following form:
-    {
+
-       "i" : value
+	{
-    }
+	    "i" : value
+	}
 
 Here's how to insert them:
 
-    100.times { |i| coll.insert("i" => i) }
+	100.times { |i| coll.insert("i" => i) }
 
 Notice that we can insert documents of different "shapes" into the same collection. These records are in the same collection as the complex record we inserted above.  This aspect is what we mean when we say that MongoDB is "schema-free".
 
-#### Counting Documents in a Collection
+### Reading Documents with `find_one` and `find`
 
-Now that we've inserted 101 documents (the 100 we did in the loop, plus the first one), we can check to see if we have them all using the `count()` method.
+#### Reading the First Document in a Collection using `find_one`
 
-    puts coll.count()
+To retrieve the document that we inserted, we can do a simple `find_one` method to get the first document in the collection.  This method returns a single document directly.
 
-and it should print `101`.
+	coll.find_one
 
-#### Using a Cursor to get all of the Documents
+and you should something like:
 
-To get all the documents from the collection, we use the `find()` method. `find()` returns a `Cursor` object, which allows us to iterate over the set of documents that matches our query.  The Ruby driver's Cursor implemented Enumerable, which allows us to use `Enumerable#each`, `Enumerable#map}, etc. For instance:
+	{"_id"=>BSON::ObjectId('4f7b1ea6e4d30b35c9000001'), "name"=>"MongoDB", "type"=>"database", "count"=>1, "info"=>{"x"=>203, "y"=>"102"}}
 
-    coll.find().each { |row| puts row.inspect }
+Note the `_id` element has been added automatically by MongoDB to your document.
 
-and that should print all 101 documents in the collection.
+#### Reading All of the Documents with a Cursor using `find`
 
-#### Getting a Single Document with a Query
+To get all the documents from the collection, we use the `find` method. `find` returns a `Cursor` object, which allows us to iterate over the set of documents that matches our query.  The Ruby driver's Cursor implemented Enumerable, which allows us to use `Enumerable#each`, `Enumerable#map}, etc. For instance:
 
-We can create a _query_ hash to pass to the `find()` method to get a subset of the documents in our collection.  For example, if we wanted to find the document for which the value of the "i" field is 71, we would do the following ;
+	coll.find.each { |row| puts row.inspect }
 
-    coll.find("i" => 71).each { |row| puts row.inspect }
+and that should print all 101 documents in the collection.  You can take advantage of `Enumerable#to_a`.
+
+    puts coll.find.to_a
+
+Important note - using `to_a` pulls all of the full result set into memory and is inefficient if you can process by each individual document.  To process with more memory efficiency, use the `each` method with a code block for the cursor.
+
+#### Specific Queries
+
+We can create a _query_ hash to pass to the `find` method to get a subset of the documents in our collection.  To check that our update worked, find the document by id:
+
+    coll.find("_id" => id).to_a
+
+If we wanted to find the document for which the value of the "i" field is 71, we would do the following:
+
+    coll.find("i" => 71).to_a
 
 and it should just print just one document:
 
-    {"_id"=>#<BSON::ObjectID:0x117de90 ...>, "i"=>71}
+    {"_id"=>BSON::ObjectId('4f7b20b4e4d30b35c9000049'), "i"=>71}
+
+#### Sorting Documents in a Collection
+
+To sort documents, simply use the `sort` method. The method can either take a key or an array of [key, direction] pairs to sort by.
+
+Direction defaults to ascending order but can be specified as Mongo::ASCENDING, :ascending, or :asc whereas descending order can be specified with Mongo::DESCENDING, :descending, or :desc.
+
+    # Sort in ascending order by :i
+    coll.find.sort(:i)
+
+    # Sort in descending order by :i
+    coll.find.sort([:i, :desc])
+
+#### Counting Documents in a Collection
+
+Now that we've inserted 101 documents (the 100 we did in the loop, plus the first one), we can check to see if we have them all using the `count` method.
+
+    coll.count
+
+and it should print `101`.
 
 #### Getting a Set of Documents With a Query
 
 We can use the query to get a set of documents from our collection.  For example, if we wanted to get all documents where "i" > 50, we could write:
 
-    coll.find("i" => {"$gt" => 50}).each { |row| puts row }
+    puts coll.find("i" => {"$gt" => 50}).to_a
 
 which should print the documents where i > 50.  We could also get a range, say   20 < i <= 30:
 
-    coll.find("i" => {"$gt" => 20, "$lte" => 30}).each { |row| puts row }
+    puts coll.find("i" => {"$gt" => 20, "$lte" => 30}).to_a
 
-#### Selecting a subset of fields for a query
+#### Selecting a Subset of Fields for a Query
 
-Use the `:fields` option. If you just want fields "a" and "b":
+Use the `:fields` option to specify fields to return.
 
-    coll.find("i" => {"$gt" => 50}, :fields => ["a", "b"]).each { |row| puts row }
+    puts coll.find("_id" => id, :fields => ["name", "type"]).to_a
 
 #### Querying with Regular Expressions
 
 Regular expressions can be used to query MongoDB. To find all names that begin with 'a':
 
-    coll.find({"name" => /^a/})
+    puts coll.find({"name" => /^M/}).to_a
 
 You can also construct a regular expression dynamically. To match a given search string:
 
+    params = {'search' => 'DB'}
     search_string = params['search']
 
     # Constructor syntax
-    coll.find({"name" => Regexp.new(search_string)})
+    puts coll.find({"name" => Regexp.new(search_string)}).to_a
 
     # Literal syntax
-    coll.find({"name" => /#{search_string}/})
+    puts coll.find({"name" => /#{search_string}/}).to_a
 
 Although MongoDB isn't vulnerable to anything like SQL-injection, it may be worth checking the search string for anything malicious.
 
+### Updating Documents with `update`
+
+We can update the previous document using the `update` method. There are a couple ways to update a document. We can rewrite it:
+
+    doc["name"] = "MongoDB Ruby"
+    coll.update({"_id" => id}, doc)
+
+Or we can use an atomic operator to change a single value:
+
+    coll.update({"_id" => id}, {"$set" => {"name" => "MongoDB Ruby"}})
+
+Verify the update.
+
+    puts coll.find("_id" => id).to_a
+
+Read [more about updating documents|Updating].
+
+### Deleting Documents with `remove`
+
+Use the `remove` method to delete documents.
+
+    coll.count
+    coll.remove("i" => 71)
+    coll.count
+    puts coll.find("i" => 71).to_a
+
+The above shows that the count has been reduced and that the document can no longer be found.
+
+Without arguments, the `remove` method deletes all documents.
+
+    coll.remove
+    coll.count
+
+Please program carefully.
+
 ## Indexing
 
-#### Creating An Index
+### Creating An Index
 
 MongoDB supports indexes, and they are very easy to add on a collection.  To create an index, you specify an index name and an array of field names to be indexed, or a single field name. The following creates an ascending index on the "i" field:
 
@@ -215,7 +274,21 @@ To specify complex indexes or a descending index you need to use a slightly more
     # Explicit "ascending"
     coll.create_index([["i", Mongo::ASCENDING]])
 
-#### Creating and querying on a geospatial index
+Use the `explain` method on the cursor to show how MongoDB will run the query.
+
+    coll.find("_id" => id).explain
+    coll.find("i" => 71).explain
+    coll.find("type" => "database").explain
+
+The above shows that the query by `_id` and `i` will use faster indexed BtreeCursor, while the query by `type` will use a slower BasicCursor.
+
+### Getting a List of Indexes on a Collection
+
+You can get a list of the indexes on a collection.
+
+    coll.index_information
+
+### Creating and Querying on a Geospatial Index
 
 First, create the index on a field containing long-lat values:
 
@@ -227,9 +300,45 @@ Then get a list of the twenty locations nearest to the point 50, 50:
       puts p.inspect
     end
 
-#### Getting a List of Indexes on a Collection
+## Dropping
 
-You can get a list of the indexes on a collection using `coll.index_information()`.
+### Drop an Index
+
+To drop a secondary index, use the `drop_index` method on the collection.
+
+    coll.drop_index("i_1")
+    coll.index_information
+
+The dropped index is no longer listed.
+
+### Drop All Indexes
+
+To drop all secondary indexes, use the `drop_indexes` method on the collection.
+
+    coll.drop_indexes
+    coll.index_information
+
+Only the primary index "_id_" is listed.
+
+### Drop a Collection
+
+To drop a collection, use the `drop` method on the collection.
+
+    coll.drop
+    db.collection_names
+
+The dropped collection is no longer listed.  The `drop_collection` method can be used on the database as an alternative.
+
+    db.drop_collection("testCollection")
+
+### Drop a Database
+
+To drop a database, use the `drop_database` method on the connection.
+
+    connection.drop_database("mydb")
+    connection.database_names
+
+The dropped database is no longer listed.
 
 ## Database Administration
 

docs/WRITE_CONCERN.md

@@ -7,9 +7,12 @@ Write concern is set using the `:safe` option. There are several possible option
     @collection.save({:doc => 'foo'}, :safe => true)
     @collection.save({:doc => 'foo'}, :safe => {:w => 2})
     @collection.save({:doc => 'foo'}, :safe => {:w => 2, :wtimeout => 200})
-    @collection.save({:doc => 'foo'}, :safe => {:w => 2, :wtimeout => 200, :fsync => true})
+    @collection.save({:doc => 'foo'}, :safe => {:w => 2, :wtimeout => 200, :j => true})
 
-The first, `true`, simply indicates that we should request a response from the server to ensure that to errors have occurred. The second, `{:w => 2}`forces the server to wait until at least two servers have recorded the write. The third does the same but will time out if the replication can't be completed in 200 milliseconds. The fourth forces an fsync on each server being written to (note: this option is rarely necessary and will have a dramaticly negative effect on performance).
+The first, `true`, simply indicates that we should request a response from the server to ensure that no errors have occurred. The second, `{:w => 2}`, forces the server to wait until at least two servers have recorded the write. The third does the same but will time out if the replication can't be completed in 200 milliseconds.
+Setting a value for `wtimeout` is encouraged.
+
+Finally, the fourth example forces the journal to sync to disk if journaling is enabled.
 
 ## Write concern inheritance
 

docs/examples/queries.rb

@@ -19,52 +19,56 @@ coll.remove
 coll.insert('a' => 1)
 coll.insert('a' => 2)
 coll.insert('b' => 3)
+coll.insert('c' => 'foo')
+coll.insert('c' => 'bar')
 
 # Count.
-puts "There are #{coll.count()} records."
+puts "There are #{coll.count} records."
 
 # Find all records. find() returns a Cursor.
-cursor = coll.find()
+puts "Find all records:"
+pp cursor = coll.find.to_a
 
 # Print them. Note that all records have an _id automatically added by the
 # database. See pk.rb for an example of how to use a primary key factory to
 # generate your own values for _id.
-cursor.each { |row| pp row }
+puts "Print each document individually:"
-
+pp cursor.each { |row| pp row }
-# Cursor has a to_a method that slurps all records into memory.
-rows = coll.find().to_a
-rows.each { |row| pp row }
 
 # See Collection#find. From now on in this file, we won't be printing the
 # records we find.
-coll.find('a' => 1)
+puts "Find one record:"
+pp coll.find('a' => 1).to_a
 
 # Find records sort by 'a', skip 1, limit 2 records.
 # Sort can be single name, array, or hash.
-coll.find({}, {:skip => 1, :limit => 2, :sort => 'a'})
+puts "Skip 1, limit 2, sort by 'a':"
+pp coll.find({}, {:skip => 1, :limit => 2, :sort => 'a'}).to_a
 
 # Find all records with 'a' > 1. There is also $lt, $gte, and $lte.
 coll.find({'a' => {'$gt' => 1}})
 coll.find({'a' => {'$gt' => 1, '$lte' => 3}})
 
 # Find all records with 'a' in a set of values.
-coll.find('a' => {'$in' => [1,2]})
+puts "Find all records where a is $in [1, 2]:"
+pp coll.find('a' => {'$in' => [1,2]}).to_a
 
-# Find by regexp
+puts "Find by regex:"
-coll.find('a' => /[1|2]/)
+pp coll.find({'c' => /f/}).to_a
 
 # Print query explanation
-pp coll.find('a' => /[1|2]/).explain()
+puts "Print an explain:"
+pp coll.find({'c' => /f/}).explain
 
 # Use a hint with a query. Need an index. Hints can be stored with the
 # collection, in which case they will be used with all queries, or they can be
 # specified per query, in which case that hint overrides the hint associated
 # with the collection if any.
-coll.create_index('a')
+coll.create_index('c')
-coll.hint = 'a'
+coll.hint = 'c'
 
-# You will see a different explanation now that the hint is in place
+puts "Print an explain with index:"
-pp coll.find('a' => /[1|2]/).explain()
+pp coll.find('c' => /[f|b]/).explain
 
-# Override hint for single query
+puts "Print an explain with natural order hint:"
-coll.find({'a' => 1}, :hint => 'b')
+pp coll.find({'c' => /[f|b]/}, :hint => '$natural').explain

docs/examples/replica_set.rb

@@ -4,7 +4,7 @@ require 'mongo'
 cons = []
 
 10.times do
-  cons << Mongo::Connection.multi([['localhost', 27017]], :read_secondary => true)
+  cons << Mongo::ReplSetConnection(['localhost:27017'], :read => :secondary)
 end
 
 ports = cons.map do |con|

docs/examples/simple.rb

@@ -1,5 +1,6 @@
 $:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 
+require 'rubygems'
 require 'mongo'
 
 include Mongo

ext/cbson/bson_buffer.c

@@ -17,21 +17,23 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "buffer.h"
+#include "bson_buffer.h"
 
 #define INITIAL_BUFFER_SIZE 256
+#define DEFAULT_MAX_SIZE 4 * 1024 * 1024
 
-struct buffer {
+struct bson_buffer {
     char* buffer;
     int size;
     int position;
+    int max_size;
 };
 
 /* Allocate and return a new buffer.
  * Return NULL on allocation failure. */
-buffer_t buffer_new(void) {
+bson_buffer_t bson_buffer_new(void) {
-    buffer_t buffer;
+    bson_buffer_t buffer;
-    buffer = (buffer_t)malloc(sizeof(struct buffer));
+    buffer = (bson_buffer_t)malloc(sizeof(struct bson_buffer));
     if (buffer == NULL) {
         return NULL;
     }
@@ -43,13 +45,22 @@ buffer_t buffer_new(void) {
         free(buffer);
         return NULL;
     }
+    buffer->max_size = DEFAULT_MAX_SIZE;
 
     return buffer;
 }
 
+void bson_buffer_set_max_size(bson_buffer_t buffer, int max_size) {
+    buffer->max_size = max_size;
+}
+
+int bson_buffer_get_max_size(bson_buffer_t buffer) {
+    return buffer->max_size;
+}
+
 /* Free the memory allocated for `buffer`.
  * Return non-zero on failure. */
-int buffer_free(buffer_t buffer) {
+int bson_buffer_free(bson_buffer_t buffer) {
     if (buffer == NULL) {
         return 1;
     }
@@ -60,14 +71,19 @@ int buffer_free(buffer_t buffer) {
 
 /* Grow `buffer` to at least `min_length`.
  * Return non-zero on allocation failure. */
-static int buffer_grow(buffer_t buffer, int min_length) {
+static int buffer_grow(bson_buffer_t buffer, int min_length) {
     int size = buffer->size;
+    int old_size;
     char* old_buffer = buffer->buffer;
     if (size >= min_length) {
         return 0;
     }
     while (size < min_length) {
+        old_size = size;
         size *= 2;
+        /* Prevent potential overflow. */
+        if( size < old_size )
+            size = min_length;
     }
     buffer->buffer = (char*)realloc(buffer->buffer, sizeof(char) * size);
     if (buffer->buffer == NULL) {
@@ -81,7 +97,7 @@ static int buffer_grow(buffer_t buffer, int min_length) {
 
 /* Assure that `buffer` has at least `size` free bytes (and grow if needed).
  * Return non-zero on allocation failure. */
-static int buffer_assure_space(buffer_t buffer, int size) {
+static int buffer_assure_space(bson_buffer_t buffer, int size) {
     if (buffer->position + size <= buffer->size) {
         return 0;
     }
@@ -90,7 +106,7 @@ static int buffer_assure_space(buffer_t buffer, int size) {
 
 /* Save `size` bytes from the current position in `buffer` (and grow if needed).
  * Return offset for writing, or -1 on allocation failure. */
-buffer_position buffer_save_space(buffer_t buffer, int size) {
+bson_buffer_position bson_buffer_save_space(bson_buffer_t buffer, int size) {
     int position = buffer->position;
     if (buffer_assure_space(buffer, size) != 0) {
         return -1;
@@ -101,7 +117,7 @@ buffer_position buffer_save_space(buffer_t buffer, int size) {
 
 /* Write `size` bytes from `data` to `buffer` (and grow if needed).
  * Return non-zero on allocation failure. */
-int buffer_write(buffer_t buffer, const char* data, int size) {
+int bson_buffer_write(bson_buffer_t buffer, const char* data, int size) {
     if (buffer_assure_space(buffer, size) != 0) {
         return 1;
     }
@@ -114,10 +130,10 @@ int buffer_write(buffer_t buffer, const char* data, int size) {
 /* Write `size` bytes from `data` to `buffer` at position `position`.
  * Does not change the internal position of `buffer`.
  * Return non-zero if buffer isn't large enough for write. */
-int buffer_write_at_position(buffer_t buffer, buffer_position position,
+int bson_buffer_write_at_position(bson_buffer_t buffer, bson_buffer_position position,
                              const char* data, int size) {
     if (position + size > buffer->size) {
-        buffer_free(buffer);
+        bson_buffer_free(buffer);
         return 1;
     }
 
@@ -126,10 +142,10 @@ int buffer_write_at_position(buffer_t buffer, buffer_position position,
 }
 
 
-int buffer_get_position(buffer_t buffer) {
+int bson_buffer_get_position(bson_buffer_t buffer) {
     return buffer->position;
 }
 
-char* buffer_get_buffer(buffer_t buffer) {
+char* bson_buffer_get_buffer(bson_buffer_t buffer) {
     return buffer->buffer;
 }

ext/cbson/bson_buffer.h

@@ -14,42 +14,47 @@
  * limitations under the License.
  */
 
-#ifndef BUFFER_H
+#ifndef _BSON_BUFFER_H
-#define BUFFER_H
+#define _BSON_BUFFER_H
 
 /* Note: if any of these functions return a failure condition then the buffer
  * has already been freed. */
 
 /* A buffer */
-typedef struct buffer* buffer_t;
+typedef struct bson_buffer* bson_buffer_t;
 /* A position in the buffer */
-typedef int buffer_position;
+typedef int bson_buffer_position;
 
 /* Allocate and return a new buffer.
  * Return NULL on allocation failure. */
-buffer_t buffer_new(void);
+bson_buffer_t bson_buffer_new(void);
+
+/* Set the max size for this buffer.
+ * Note: this is not a hard limit. */
+void bson_buffer_set_max_size(bson_buffer_t buffer, int max_size);
+int bson_buffer_get_max_size(bson_buffer_t buffer);
 
 /* Free the memory allocated for `buffer`.
  * Return non-zero on failure. */
-int buffer_free(buffer_t buffer);
+int bson_buffer_free(bson_buffer_t buffer);
 
 /* Save `size` bytes from the current position in `buffer` (and grow if needed).
  * Return offset for writing, or -1 on allocation failure. */
-buffer_position buffer_save_space(buffer_t buffer, int size);
+bson_buffer_position bson_buffer_save_space(bson_buffer_t buffer, int size);
 
 /* Write `size` bytes from `data` to `buffer` (and grow if needed).
  * Return non-zero on allocation failure. */
-int buffer_write(buffer_t buffer, const char* data, int size);
+int bson_buffer_write(bson_buffer_t buffer, const char* data, int size);
 
 /* Write `size` bytes from `data` to `buffer` at position `position`.
  * Does not change the internal position of `buffer`.
  * Return non-zero if buffer isn't large enough for write. */
-int buffer_write_at_position(buffer_t buffer, buffer_position position, const char* data, int size);
+int bson_buffer_write_at_position(bson_buffer_t buffer, bson_buffer_position position, const char* data, int size);
 
-/* Getters for the internals of a buffer_t.
+/* Getters for the internals of a bson_buffer_t.
  * Should try to avoid using these as much as possible
  * since they break the abstraction. */
-buffer_position buffer_get_position(buffer_t buffer);
+bson_buffer_position bson_buffer_get_position(bson_buffer_t buffer);
-char* buffer_get_buffer(buffer_t buffer);
+char* bson_buffer_get_buffer(bson_buffer_t buffer);
 
 #endif

ext/cbson/cbson.c

@@ -21,6 +21,7 @@
  */
 
 #include "ruby.h"
+#include "version.h"
 
 /* Ensure compatibility with early releases of Ruby 1.8.5 */
 #ifndef RSTRING_PTR
@@ -61,16 +62,16 @@
 #include <time.h>
 
 #include "version.h"
-#include "buffer.h"
+#include "bson_buffer.h"
 #include "encoding_helpers.h"
 
 #define SAFE_WRITE(buffer, data, size)                                  \
-    if (buffer_write((buffer), (data), (size)) != 0)                    \
+    if (bson_buffer_write((buffer), (data), (size)) != 0)                    \
-        rb_raise(rb_eNoMemError, "failed to allocate memory in buffer.c")
+        rb_raise(rb_eNoMemError, "failed to allocate memory in bson_buffer.c")
 
 #define SAFE_WRITE_AT_POS(buffer, position, data, size)                 \
-    if (buffer_write_at_position((buffer), (position), (data), (size)) != 0) \
+    if (bson_buffer_write_at_position((buffer), (position), (data), (size)) != 0) \
-        rb_raise(rb_eRuntimeError, "invalid write at position in buffer.c")
+        rb_raise(rb_eRuntimeError, "invalid write at position in bson_buffer.c")
 
 #define MAX_HOSTNAME_LENGTH 256
 
@@ -86,6 +87,7 @@ static VALUE DBRef;
 static VALUE Code;
 static VALUE MinKey;
 static VALUE MaxKey;
+static VALUE Timestamp;
 static VALUE Regexp;
 static VALUE OrderedHash;
 static VALUE InvalidKeyName;
@@ -107,34 +109,22 @@ static int max_bson_size;
         }                                                               \
         _str;                                                           \
     })
-/* MUST call TO_UTF8 before calling write_utf8. */
-#define TO_UTF8(string) rb_str_export_to_enc((string), rb_utf8_encoding())
-static void write_utf8(buffer_t buffer, VALUE string, char check_null) {
-    result_t status = check_string(RSTRING_PTR(string), RSTRING_LENINT(string),
-                                   0, check_null);
-    if (status == HAS_NULL) {
-        buffer_free(buffer);
-        rb_raise(InvalidDocument, "Key names / regex patterns must not contain the NULL byte");
-    }
-    SAFE_WRITE(buffer, RSTRING_PTR(string), RSTRING_LENINT(string));
-}
 #else
 #define STR_NEW(p,n) rb_str_new((p), (n))
-/* MUST call TO_UTF8 before calling write_utf8. */
+#endif
-#define TO_UTF8(string) (string)
+
-static void write_utf8(buffer_t buffer, VALUE string, char check_null) {
+static void write_utf8(bson_buffer_t buffer, VALUE string, char check_null) {
     result_t status = check_string(RSTRING_PTR(string), RSTRING_LEN(string),
                                    1, check_null);
     if (status == HAS_NULL) {
-        buffer_free(buffer);
+        bson_buffer_free(buffer);
         rb_raise(InvalidDocument, "Key names / regex patterns must not contain the NULL byte");
     } else if (status == NOT_UTF_8) {
-        buffer_free(buffer);
+        bson_buffer_free(buffer);
         rb_raise(InvalidStringEncoding, "String not valid UTF-8");
     }
-    SAFE_WRITE(buffer, RSTRING_PTR(string), RSTRING_LEN(string));
+    SAFE_WRITE(buffer, RSTRING_PTR(string), (int)RSTRING_LEN(string));
 }
-#endif
 
 // this sucks. but for some reason these moved around between 1.8 and 1.9
 #ifdef ONIGURUMA_H
@@ -162,6 +152,7 @@ static void write_utf8(buffer_t buffer, VALUE string, char check_null) {
         *buffer = malloc(vslength);             \
         _snprintf(*buffer, vslength, "%d", i);  \
     }
+#define FREE_INTSTRING(buffer) free(buffer)
 #else
 #define INT2STRING(buffer, i)                   \
     {                                           \
@@ -169,9 +160,15 @@ static void write_utf8(buffer_t buffer, VALUE string, char check_null) {
         *buffer = malloc(vslength);             \
         snprintf(*buffer, vslength, "%d", i);   \
     }
+#define FREE_INTSTRING(buffer) free(buffer)
 #endif
 #else
 #define INT2STRING(buffer, i) asprintf(buffer, "%d", i);
+#ifdef USING_SYSTEM_ALLOCATOR_LIBRARY /* Ruby Enterprise Edition with tcmalloc */
+#define FREE_INTSTRING(buffer) system_free(buffer)
+#else
+#define FREE_INTSTRING(buffer) free(buffer)
+#endif
 #endif
 
 #ifndef RREGEXP_SRC
@@ -193,24 +190,23 @@ static int cmp_char(const void* a, const void* b) {
     return *(char*)a - *(char*)b;
 }
 
-static void write_doc(buffer_t buffer, VALUE hash, VALUE check_keys, VALUE move_id);
+static void write_doc(bson_buffer_t buffer, VALUE hash, VALUE check_keys, VALUE move_id);
 static int write_element_with_id(VALUE key, VALUE value, VALUE extra);
 static int write_element_without_id(VALUE key, VALUE value, VALUE extra);
 static VALUE elements_to_hash(const char* buffer, int max);
 
-static VALUE pack_extra(buffer_t buffer, VALUE check_keys) {
+static VALUE pack_extra(bson_buffer_t buffer, VALUE check_keys) {
     return rb_ary_new3(2, LL2NUM((long long)buffer), check_keys);
 }
 
-static void write_name_and_type(buffer_t buffer, VALUE name, char type) {
+static void write_name_and_type(bson_buffer_t buffer, VALUE name, char type) {
     SAFE_WRITE(buffer, &type, 1);
-    name = TO_UTF8(name);
     write_utf8(buffer, name, 1);
     SAFE_WRITE(buffer, &zero, 1);
 }
 
 static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
-    buffer_t buffer = (buffer_t)NUM2LL(rb_ary_entry(extra, 0));
+    bson_buffer_t buffer = (bson_buffer_t)NUM2LL(rb_ary_entry(extra, 0));
     VALUE check_keys = rb_ary_entry(extra, 1);
 
     if (TYPE(key) == T_SYMBOL) {
@@ -219,7 +215,7 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
     }
 
     if (TYPE(key) != T_STRING) {
-        buffer_free(buffer);
+        bson_buffer_free(buffer);
         rb_raise(rb_eTypeError, "keys must be strings or symbols");
     }
 
@@ -230,13 +226,13 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
     if (check_keys == Qtrue) {
         int i;
         if (RSTRING_LEN(key) > 0 && RSTRING_PTR(key)[0] == '$') {
-            buffer_free(buffer);
+            bson_buffer_free(buffer);
-            rb_raise(InvalidKeyName, "key must not start with '$'");
+            rb_raise(InvalidKeyName, "%s - key must not start with '$'", RSTRING_PTR(key));
         }
         for (i = 0; i < RSTRING_LEN(key); i++) {
             if (RSTRING_PTR(key)[i] == '.') {
-                buffer_free(buffer);
+                bson_buffer_free(buffer);
-                rb_raise(InvalidKeyName, "key must not contain '.'");
+                rb_raise(InvalidKeyName, "%s - key must not contain '.'", RSTRING_PTR(key));
             }
         }
     }
@@ -246,7 +242,7 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
         {
             if (rb_funcall(value, gt_operator, 1, LL2NUM(9223372036854775807LL)) == Qtrue ||
                 rb_funcall(value, lt_operator, 1, LL2NUM(-9223372036854775808ULL)) == Qtrue) {
-                buffer_free(buffer);
+                bson_buffer_free(buffer);
                 rb_raise(rb_eRangeError, "MongoDB can only handle 8-byte ints");
             }
         }
@@ -300,15 +296,15 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
         }
     case T_ARRAY:
         {
-            buffer_position length_location, start_position, obj_length;
+            bson_buffer_position length_location, start_position, obj_length;
             int items, i;
             VALUE* values;
 
             write_name_and_type(buffer, key, 0x04);
-            start_position = buffer_get_position(buffer);
+            start_position = bson_buffer_get_position(buffer);
 
             // save space for length
-            length_location = buffer_save_space(buffer, 4);
+            length_location = bson_buffer_save_space(buffer, 4);
             if (length_location == -1) {
                 rb_raise(rb_eNoMemError, "failed to allocate memory in buffer.c");
             }
@@ -320,12 +316,12 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
                 INT2STRING(&name, i);
                 key = rb_str_new2(name);
                 write_element_with_id(key, rb_ary_entry(value, i), pack_extra(buffer, check_keys));
-                free(name);
+                FREE_INTSTRING(name);
             }
 
             // write null byte and fill in length
             SAFE_WRITE(buffer, &zero, 1);
-            obj_length = buffer_get_position(buffer) - start_position;
+            obj_length = bson_buffer_get_position(buffer) - start_position;
             SAFE_WRITE_AT_POS(buffer, length_location, (const char*)&obj_length, 4);
             break;
         }
@@ -333,7 +329,6 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
         {
             int length;
             write_name_and_type(buffer, key, 0x02);
-            value = TO_UTF8(value);
             length = RSTRING_LENINT(value) + 1;
             SAFE_WRITE(buffer, (char*)&length, 4);
             write_utf8(buffer, value, 0);
@@ -383,14 +378,14 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
                 break;
             }
             if (strcmp(cls, "BSON::DBRef") == 0) {
-                buffer_position length_location, start_position, obj_length;
+                bson_buffer_position length_location, start_position, obj_length;
                 VALUE ns, oid;
                 write_name_and_type(buffer, key, 0x03);
 
-                start_position = buffer_get_position(buffer);
+                start_position = bson_buffer_get_position(buffer);
 
                 // save space for length
-                length_location = buffer_save_space(buffer, 4);
+                length_location = bson_buffer_save_space(buffer, 4);
                 if (length_location == -1) {
                     rb_raise(rb_eNoMemError, "failed to allocate memory in buffer.c");
                 }
@@ -402,18 +397,18 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
 
                 // write null byte and fill in length
                 SAFE_WRITE(buffer, &zero, 1);
-                obj_length = buffer_get_position(buffer) - start_position;
+                obj_length = bson_buffer_get_position(buffer) - start_position;
                 SAFE_WRITE_AT_POS(buffer, length_location, (const char*)&obj_length, 4);
                 break;
             }
             if (strcmp(cls, "BSON::Code") == 0) {
-                buffer_position length_location, start_position, total_length;
+                bson_buffer_position length_location, start_position, total_length;
                 int length;
                 VALUE code_str;
                 write_name_and_type(buffer, key, 0x0F);
 
-                start_position = buffer_get_position(buffer);
+                start_position = bson_buffer_get_position(buffer);
-                length_location = buffer_save_space(buffer, 4);
+                length_location = bson_buffer_save_space(buffer, 4);
                 if (length_location == -1) {
                     rb_raise(rb_eNoMemError, "failed to allocate memory in buffer.c");
                 }
@@ -425,7 +420,7 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
                 SAFE_WRITE(buffer, &zero, 1);
                 write_doc(buffer, rb_funcall(value, rb_intern("scope"), 0), Qfalse, Qfalse);
 
-                total_length = buffer_get_position(buffer) - start_position;
+                total_length = bson_buffer_get_position(buffer) - start_position;
                 SAFE_WRITE_AT_POS(buffer, length_location, (const char*)&total_length, 4);
                 break;
             }
@@ -437,17 +432,32 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
                 write_name_and_type(buffer, key, 0xff);
                 break;
             }
+            if (strcmp(cls, "BSON::Timestamp") == 0) {
+                unsigned int seconds;
+                unsigned int increment;
+                
+                write_name_and_type(buffer, key, 0x11);
+
+                seconds = NUM2UINT(
+                    rb_funcall(value, rb_intern("seconds"), 0));
+                increment = NUM2UINT(
+                    rb_funcall(value, rb_intern("increment"), 0));
+
+                SAFE_WRITE(buffer, (const char*)&increment, 4);
+                SAFE_WRITE(buffer, (const char*)&seconds, 4);
+                break;
+            }
             if (strcmp(cls, "DateTime") == 0 || strcmp(cls, "Date") == 0 || strcmp(cls, "ActiveSupport::TimeWithZone") == 0) {
-                buffer_free(buffer);
+                bson_buffer_free(buffer);
                 rb_raise(InvalidDocument, "%s is not currently supported; use a UTC Time instance instead.", cls);
                 break;
             }
             if(strcmp(cls, "Complex") == 0 || strcmp(cls, "Rational") == 0 || strcmp(cls, "BigDecimal") == 0) {
-                buffer_free(buffer);
+                bson_buffer_free(buffer);
                 rb_raise(InvalidDocument, "Cannot serialize the Numeric type %s as BSON; only Bignum, Fixnum, and Float are supported.", cls);
                 break;
             }
-            buffer_free(buffer);
+            bson_buffer_free(buffer);
             rb_raise(InvalidDocument, "Cannot serialize an object of class %s into BSON.", cls);
             break;
         }
@@ -461,12 +471,18 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
                 SAFE_WRITE(buffer, (const char*)&time_since_epoch, 8);
                 break;
             }
+            // Date classes are TYPE T_DATA in Ruby >= 1.9.3
+            if (strcmp(cls, "DateTime") == 0 || strcmp(cls, "Date") == 0 || strcmp(cls, "ActiveSupport::TimeWithZone") == 0) {
+                bson_buffer_free(buffer);
+                rb_raise(InvalidDocument, "%s is not currently supported; use a UTC Time instance instead.", cls);
+                break;
+            }
             if(strcmp(cls, "BigDecimal") == 0) {
-                buffer_free(buffer);
+                bson_buffer_free(buffer);
                 rb_raise(InvalidDocument, "Cannot serialize the Numeric type %s as BSON; only Bignum, Fixnum, and Float are supported.", cls);
                 break;
             }
-            buffer_free(buffer);
+            bson_buffer_free(buffer);
             rb_raise(InvalidDocument, "Cannot serialize an object of class %s into BSON.", cls);
             break;
         }
@@ -478,7 +494,6 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
 
             write_name_and_type(buffer, key, 0x0B);
 
-            pattern = TO_UTF8(pattern);
             write_utf8(buffer, pattern, 1);
             SAFE_WRITE(buffer, &zero, 1);
 
@@ -488,7 +503,9 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
             }
             if (flags & MULTILINE) {
                 char multiline = 'm';
+                char dotall = 's';
                 SAFE_WRITE(buffer, &multiline, 1);
+                SAFE_WRITE(buffer, &dotall, 1);
             }
             if (flags & EXTENDED) {
                 char extended = 'x';
@@ -498,9 +515,9 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
             has_extra = rb_funcall(value, rb_intern("respond_to?"), 1, rb_str_new2("extra_options_str"));
             if (TYPE(has_extra) == T_TRUE) {
                 VALUE extra = rb_funcall(value, rb_intern("extra_options_str"), 0);
-                buffer_position old_position = buffer_get_position(buffer);
+                bson_buffer_position old_position = bson_buffer_get_position(buffer);
                 SAFE_WRITE(buffer, RSTRING_PTR(extra), RSTRING_LENINT(extra));
-                qsort(buffer_get_buffer(buffer) + old_position, RSTRING_LEN(extra), sizeof(char), cmp_char);
+                qsort(bson_buffer_get_buffer(buffer) + old_position, RSTRING_LEN(extra), sizeof(char), cmp_char);
             }
             SAFE_WRITE(buffer, &zero, 1);
 
@@ -509,7 +526,7 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
     default:
         {
             const char* cls = rb_obj_classname(value);
-            buffer_free(buffer);
+            bson_buffer_free(buffer);
             rb_raise(InvalidDocument, "Cannot serialize an object of class %s (type %d) into BSON.", cls, TYPE(value));
             break;
         }
@@ -525,10 +542,10 @@ static int write_element_with_id(VALUE key, VALUE value, VALUE extra) {
     return write_element(key, value, extra, 1);
 }
 
-static void write_doc(buffer_t buffer, VALUE hash, VALUE check_keys, VALUE move_id) {
+static void write_doc(bson_buffer_t buffer, VALUE hash, VALUE check_keys, VALUE move_id) {
-    buffer_position start_position = buffer_get_position(buffer);
+    bson_buffer_position start_position = bson_buffer_get_position(buffer);
-    buffer_position length_location = buffer_save_space(buffer, 4);
+    bson_buffer_position length_location = bson_buffer_save_space(buffer, 4);
-    buffer_position length;
+    bson_buffer_position length;
     int allow_id;
     int (*write_function)(VALUE, VALUE, VALUE) = NULL;
     VALUE id_str = rb_str_new2("_id");
@@ -581,34 +598,39 @@ static void write_doc(buffer_t buffer, VALUE hash, VALUE check_keys, VALUE move_
     } else if (rb_obj_is_kind_of(hash, RB_HASH) == Qtrue) {
         rb_hash_foreach(hash, write_function, pack_extra(buffer, check_keys));
     } else {
-        buffer_free(buffer);
+        bson_buffer_free(buffer);
         rb_raise(InvalidDocument, "BSON.serialize takes a Hash but got a %s", rb_obj_classname(hash));
     }
 
     // write null byte and fill in length
     SAFE_WRITE(buffer, &zero, 1);
-    length = buffer_get_position(buffer) - start_position;
+    length = bson_buffer_get_position(buffer) - start_position;
 
     // make sure that length doesn't exceed 4MB
-    if (length > max_bson_size) {
+    if (length > bson_buffer_get_max_size(buffer)) {
-      buffer_free(buffer);
+      bson_buffer_free(buffer);
-      rb_raise(InvalidDocument, "Document too large: BSON documents are limited to %d bytes.", max_bson_size);
+      rb_raise(InvalidDocument,
+          "Document too large: This BSON documents is limited to %d bytes.",
+          bson_buffer_get_max_size(buffer));
       return;
     }
     SAFE_WRITE_AT_POS(buffer, length_location, (const char*)&length, 4);
 }
 
-static VALUE method_serialize(VALUE self, VALUE doc, VALUE check_keys, VALUE move_id) {
+static VALUE method_serialize(VALUE self, VALUE doc, VALUE check_keys,
+    VALUE move_id, VALUE max_size) {
+
     VALUE result;
-    buffer_t buffer = buffer_new();
+    bson_buffer_t buffer = bson_buffer_new();
+    bson_buffer_set_max_size(buffer, FIX2INT(max_size));
     if (buffer == NULL) {
         rb_raise(rb_eNoMemError, "failed to allocate memory in buffer.c");
     }
 
     write_doc(buffer, doc, check_keys, move_id);
 
-    result = rb_str_new(buffer_get_buffer(buffer), buffer_get_position(buffer));
+    result = rb_str_new(bson_buffer_get_buffer(buffer), bson_buffer_get_position(buffer));
-    if (buffer_free(buffer) != 0) {
+    if (bson_buffer_free(buffer) != 0) {
         rb_raise(rb_eRuntimeError, "failed to free buffer");
     }
     return result;
@@ -722,10 +744,23 @@ static VALUE get_value(const char* buffer, int* position, int type) {
         }
     case 9:
         {
-            long long millis;
+            int64_t millis;
             memcpy(&millis, buffer + *position, 8);
 
-            value = rb_time_new(millis / 1000, (millis % 1000) * 1000);
+            // Support 64-bit time values in 32 bit environments in Ruby > 1.9
+            // Note: rb_time_num_new is not available pre Ruby 1.9
+            #if RUBY_API_VERSION_CODE >= 10900
+                #define add(x,y) (rb_funcall((x), '+', 1, (y)))
+                #define mul(x,y) (rb_funcall((x), '*', 1, (y)))
+                #define quo(x,y) (rb_funcall((x), rb_intern("quo"), 1, (y)))
+                VALUE d, timev;
+                d = LL2NUM(1000LL);
+                timev = add(LL2NUM(millis / 1000), quo(LL2NUM(millis % 1000), d));
+                value = rb_time_num_new(timev, Qnil);
+            #else
+                value = rb_time_new(millis / 1000, (millis % 1000) * 1000);
+            #endif
+
             value = rb_funcall(value, utc_method, 0);
             *position += 8;
             break;
@@ -752,6 +787,9 @@ static VALUE get_value(const char* buffer, int* position, int type) {
                 else if (flag == 'm') {
                     flags |= MULTILINE;
                 }
+                else if (flag == 's') {
+                    flags |= MULTILINE;
+                }
                 else if (flag == 'x') {
                     flags |= EXTENDED;
                 }
@@ -818,11 +856,13 @@ static VALUE get_value(const char* buffer, int* position, int type) {
         }
     case 17:
         {
-            int i;
+            unsigned int sec, inc;
-            int j;
+            VALUE argv[2];
-            memcpy(&i, buffer + *position, 4);
+            memcpy(&inc, buffer + *position, 4);
-            memcpy(&j, buffer + *position + 4, 4);
+            memcpy(&sec, buffer + *position + 4, 4);
-            value = rb_ary_new3(2, LL2NUM(i), LL2NUM(j));
+            argv[0] = UINT2NUM(sec);
+            argv[1] = UINT2NUM(inc);
+            value = rb_class_new_instance(2, argv, Timestamp);
             *position += 8;
             break;
         }
@@ -874,7 +914,7 @@ static VALUE method_deserialize(VALUE self, VALUE bson) {
     return elements_to_hash(buffer, remaining);
 }
 
-static VALUE objectid_generate(VALUE self)
+static VALUE objectid_generate(int argc, VALUE* args, VALUE self)
 {
     VALUE oid;
     unsigned char oid_bytes[12];
@@ -882,7 +922,11 @@ static VALUE objectid_generate(VALUE self)
     unsigned short pid;
     int i;
 
-    t = htonl((int)time(NULL));
+    if(argc == 0 || (argc == 1 && *args == Qnil)) {
+        t = htonl((int)time(NULL));
+    } else {
+        t = htonl(NUM2UINT(rb_funcall(*args, rb_intern("to_i"), 0)));
+    }
     MEMCPY(&oid_bytes, &t, unsigned char, 4);
 
     MEMCPY(&oid_bytes[4], hostname_digest, unsigned char, 3);
@@ -941,6 +985,8 @@ void Init_cbson() {
     rb_require("bson/types/min_max_keys");
     MinKey = rb_const_get(bson, rb_intern("MinKey"));
     MaxKey = rb_const_get(bson, rb_intern("MaxKey"));
+    rb_require("bson/types/timestamp");
+    Timestamp = rb_const_get(bson, rb_intern("Timestamp"));
     Regexp = rb_const_get(rb_cObject, rb_intern("Regexp"));
     rb_require("bson/exceptions");
     InvalidKeyName = rb_const_get(bson, rb_intern("InvalidKeyName"));
@@ -953,7 +999,7 @@ void Init_cbson() {
     CBson = rb_define_module("CBson");
     ext_version = rb_str_new2(VERSION);
     rb_define_const(CBson, "VERSION", ext_version);
-    rb_define_module_function(CBson, "serialize", method_serialize, 3);
+    rb_define_module_function(CBson, "serialize", method_serialize, 4);
     rb_define_module_function(CBson, "deserialize", method_deserialize, 1);
     rb_define_module_function(CBson, "max_bson_size", method_max_bson_size, 0);
     rb_define_module_function(CBson, "update_max_bson_size", method_update_max_bson_size, 1);
@@ -962,7 +1008,7 @@ void Init_cbson() {
     Digest = rb_const_get(rb_cObject, rb_intern("Digest"));
     DigestMD5 = rb_const_get(Digest, rb_intern("MD5"));
 
-    rb_define_method(ObjectId, "generate", objectid_generate, 0);
+    rb_define_method(ObjectId, "generate", objectid_generate, -1);
 
     if (gethostname(hostname, MAX_HOSTNAME_LENGTH) != 0) {
         rb_raise(rb_eRuntimeError, "failed to get hostname");

ext/cbson/encoding_helpers.c

@@ -87,7 +87,7 @@ static unsigned char isLegalUTF8(const unsigned char* source, int length) {
     return 1;
 }
 
-result_t check_string(const unsigned char* string, const int length,
+result_t check_string(const unsigned char* string, const long length,
                       const char check_utf8, const char check_null) {
     int position = 0;
     /* By default we go character by character. Will be different for checking

ext/cbson/encoding_helpers.h

@@ -23,7 +23,7 @@ typedef enum {
     HAS_NULL
 } result_t;
 
-result_t check_string(const unsigned char* string, const int length,
+result_t check_string(const unsigned char* string, const long length,
                       const char check_utf8, const char check_null);
 
 #endif

ext/cbson/version.h

@@ -14,4 +14,4 @@
  * limitations under the License.
  */
 
-#define VERSION "1.2.rc2"
+#define VERSION "1.6.2"

ext/java/src/org/jbson/RubyBSONCallback.java

@@ -9,6 +9,7 @@ import org.jruby.runtime.builtin.IRubyObject;
 import org.jruby.runtime.Block;
 import org.jruby.runtime.CallType;
 import org.jruby.runtime.callsite.CacheEntry;
+import org.jruby.util.RegexpOptions;
 
 import org.jruby.javasupport.JavaEmbedUtils;
 import org.jruby.javasupport.JavaUtil;
@@ -32,6 +33,7 @@ public class RubyBSONCallback implements BSONCallback {
     private RubyModule _rbclsBinary;
     private RubyModule _rbclsMinKey;
     private RubyModule _rbclsMaxKey;
+    private RubyModule _rbclsTimestamp;
     private RubyModule _rbclsDBRef;
     private RubyModule _rbclsCode;
     private final LinkedList<RubyObject> _stack = new LinkedList<RubyObject>();
@@ -47,6 +49,7 @@ public class RubyBSONCallback implements BSONCallback {
       _rbclsCode        = _lookupConstant( _runtime, "BSON::Code" );
       _rbclsMinKey      = _lookupConstant( _runtime, "BSON::MinKey" );
       _rbclsMaxKey      = _lookupConstant( _runtime, "BSON::MaxKey" );
+      _rbclsTimestamp   = _lookupConstant( _runtime, "BSON::Timestamp" );
       _rbclsObjectId    = _lookupConstant( _runtime, "BSON::ObjectId");
     }
 
@@ -224,19 +227,23 @@ public class RubyBSONCallback implements BSONCallback {
 
     public void gotRegex( String name , String pattern , String flags ){
       int f = 0;
+      RegexpOptions opts = new RegexpOptions();
       ByteList b = new ByteList(pattern.getBytes());
 
       if(flags.contains("i")) {
-        f = f | ReOptions.RE_OPTION_IGNORECASE;
+        opts.setIgnorecase(true);
       }
       if(flags.contains("m")) {
-        f = f | ReOptions.RE_OPTION_MULTILINE;
+        opts.setMultiline(true);
+      }
+      if(flags.contains("s")) {
+        opts.setMultiline(true);
       }
       if(flags.contains("x")) {
-        f = f | ReOptions.RE_OPTION_EXTENDED;
+        opts.setExtended(true);
       }
 
-      _put( name , RubyRegexp.newRegexp(_runtime, b, f) );
+      _put( name , RubyRegexp.newRegexp(_runtime, b, opts) );
     }
 
     public void gotString( String name , String v ){
@@ -250,17 +257,16 @@ public class RubyBSONCallback implements BSONCallback {
         _put( name , symbol );
     }
 
-    // Timestamp is currently rendered in Ruby as a two-element array.
     public void gotTimestamp( String name , int time , int inc ){
         RubyFixnum rtime = RubyFixnum.newFixnum( _runtime, time );
         RubyFixnum rinc  = RubyFixnum.newFixnum( _runtime, inc );
         RubyObject[] args = new RubyObject[2];
-        args[0] = rinc;
+        args[0] = rtime;
-        args[1] = rtime;
+        args[1] = rinc;
 
-        RubyArray result = RubyArray.newArray( _runtime, args );
+        Object result = JavaEmbedUtils.invokeMethod(_runtime, _rbclsTimestamp, "new", args, Object.class);
 
-        _put ( name , result );
+        _put ( name , (RubyObject)result );
     }
 
     public void gotObjectId( String name , ObjectId id ){
@@ -293,14 +299,9 @@ public class RubyBSONCallback implements BSONCallback {
         return result;
     }
 
+    @Deprecated
     public void gotBinaryArray( String name , byte[] b ) {
-        RubyArray a = ja2ra( b );
+      /* Deprecated */
-
-        Object[] args = new Object[] { a, 2 };
-
-        Object result = JavaEmbedUtils.invokeMethod(_runtime, _rbclsBinary, "new", args, Object.class);
-
-        _put( name, (RubyObject)result );
     }
 
     // TODO: fix abs stuff here. some kind of bad type issue

ext/java/src/org/jbson/RubyBSONDecoder.java

@@ -12,16 +12,26 @@ import org.bson.*;
 import org.bson.io.*;
 import org.bson.types.*;
 
-public class RubyBSONDecoder extends BSONDecoder {
+public class RubyBSONDecoder extends BasicBSONDecoder {
 
-//    public int decode( RubyString s , BSONCallback callback ){
+      protected void _binary( String name )
-//        byte[] b = s.getBytes();
+          throws IOException {
-//        try {
+          final int totalLen = _in.readInt();
-//            return decode( new Input( new ByteArrayInputStream(b) ) , callback );
+          final byte bType = _in.read();
-//        }
-//        catch ( IOException ioe ){
-//            throw new RuntimeException( "should be impossible" , ioe );
-//        }
-//    }
 
+          if( bType == 2 ) {
+              final int len = _in.readInt();
+              if ( len + 4 != totalLen )
+                  throw new IllegalArgumentException( "bad data size subtype 2 len: " + len + "totalLen: " + totalLen );
+
+              final byte[] data = new byte[len];
+              _in.fill( data );
+              _callback.gotBinary( name, (byte)2, data );
+          }
+          else {
+              byte[] data = new byte[totalLen];
+              _in.fill( data );
+              _callback.gotBinary( name, bType, data );
+          }
+     }
 }

ext/java/src/org/jbson/RubyBSONEncoder.java

@@ -69,7 +69,8 @@ public class RubyBSONEncoder extends BSONEncoder {
     private static final BigInteger LONG_MIN = BigInteger.valueOf(-MAX - 1);
 
 
-    public RubyBSONEncoder(Ruby runtime, boolean check_keys, boolean move_id){
+    public RubyBSONEncoder(Ruby runtime, boolean check_keys, boolean move_id, int max_bson_size){
+      _max_bson_size = max_bson_size;
       _check_keys = check_keys;
       _move_id = move_id;
       _runtime = runtime;
@@ -281,6 +282,9 @@ public class RubyBSONEncoder extends BSONEncoder {
         else if ( val instanceof Iterable)
             putIterable( name , (Iterable)val );
 
+        else if ( val instanceof Date )
+            putDate( name , ((Date)val).getTime() );
+
         else if ( val instanceof byte[] )
             putBinary( name , (byte[])val );
 
@@ -293,7 +297,7 @@ public class RubyBSONEncoder extends BSONEncoder {
         else if ( val instanceof RubyObject ) {
 
             if ( val instanceof RubyString ) {
-                putRubyString(name, ((RubyString)val).getUnicodeValue() );
+                putRubyString(name, (RubyString)val);
             }
 
             else if (val instanceof RubySymbol) {
@@ -381,6 +385,9 @@ public class RubyBSONEncoder extends BSONEncoder {
               else if ( klass.equals("BSON::MaxKey") ) {
                   _put( MAXKEY, name );
               }
+              else if ( klass.equals("BSON::Timestamp") ) {
+                  putRubyTimestamp( name, (RubyObject)val );
+              }
               else if ( klass.equals("BSON::DBRef") ) {
                   RubyHash ref = (RubyHash)JavaEmbedUtils.invokeMethod(_runtime, val,
                       "to_hash", new Object[] {}, Object.class);
@@ -501,6 +508,18 @@ public class RubyBSONEncoder extends BSONEncoder {
         _buf.writeInt( ts.getTime() );
     }
 
+    protected void putRubyTimestamp(String name, RubyObject ts ){
+        _put( TIMESTAMP , name );
+
+        Number inc = (Number)JavaEmbedUtils.invokeMethod(_runtime, ts,
+            "increment", new Object[] {}, Object.class);
+        Number sec = (Number)JavaEmbedUtils.invokeMethod(_runtime, ts,
+            "seconds", new Object[] {}, Object.class);
+
+        _buf.writeInt( (int)inc.longValue() );
+        _buf.writeInt( (int)sec.longValue() );
+    }
+
     protected void putRubyCodeWScope( String name , RubyObject code ){
         _put( CODE_W_SCOPE , name );
         int temp = _buf.getPosition();
@@ -540,7 +559,7 @@ public class RubyBSONEncoder extends BSONEncoder {
         long subtype = rbSubtype.longValue();
         byte[] data = ra2ba( rarray );
         if ( subtype == 2 ) {
-            putBinary( name, data );
+            putBinaryTypeTwo( name, data );
         }
         else {
             _put( BINARY , name );
@@ -550,11 +569,12 @@ public class RubyBSONEncoder extends BSONEncoder {
         }
     }
 
-    protected void putBinary( String name , byte[] data ){
+    /* We have a special method because type 2 has a different format. */
+    protected void putBinaryTypeTwo( String name , byte[] data ){
         _put( BINARY , name );
         _buf.writeInt( 4 + data.length );
 
-        _buf.write( B_BINARY );
+        _buf.write( 2 );
         _buf.writeInt( data.length );
         int before = _buf.getPosition();
         _buf.write( data );
@@ -563,6 +583,13 @@ public class RubyBSONEncoder extends BSONEncoder {
         com.mongodb.util.MyAsserts.assertEquals( after - before , data.length );
     }
 
+    protected void putBinary( String name , byte[] data ){
+        _put( BINARY , name );
+        _buf.writeInt( data.length );
+        _buf.write( 0 );
+        _buf.write( data );
+    }
+
     protected void putBinary( String name , Binary val ){
         _put( BINARY , name );
         _buf.writeInt( val.length() );
@@ -582,10 +609,13 @@ public class RubyBSONEncoder extends BSONEncoder {
         _putString(name, s.getSymbol(), SYMBOL);
     }
 
-    protected void putRubyString( String name , String s ) {
+    protected void putRubyString( String name , RubyString s ) {
-        _put( STRING , name );
+       byte[] bytes = s.getBytes();
-        _putValueString( s );
+       _put( STRING , name );
-    }
+       _buf.writeInt( bytes.length + 1);
+       _buf.write( bytes );
+       _buf.write( (byte)0 );
+   }
 
     protected void putString(String name, String s) {
         _putString(name, s, STRING);
@@ -621,8 +651,10 @@ public class RubyBSONEncoder extends BSONEncoder {
         if( (regexOptions & ReOptions.RE_OPTION_IGNORECASE) != 0 )
           options = options.concat( "i" );
 
-        if( (regexOptions & ReOptions.RE_OPTION_MULTILINE) != 0 )
+        if( (regexOptions & ReOptions.RE_OPTION_MULTILINE) != 0 ) {
           options = options.concat( "m" );
+          options = options.concat( "s" );
+        }
 
         if( (regexOptions & ReOptions.RE_OPTION_EXTENDED) != 0 )
           options = options.concat( "x" );

lib/bson.rb

@@ -1,12 +1,24 @@
 # encoding: UTF-8
+#
+# --
+# Copyright (C) 2008-2011 10gen Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ++
 
-$:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
+require 'bson/version'
-
-MINIMUM_BSON_EXT_VERSION = "1.2.rc2"
 
 module BSON
-  VERSION = "1.2.rc2"
-
   if defined? Mongo::DEFAULT_MAX_BSON_SIZE
     DEFAULT_MAX_BSON_SIZE = Mongo::DEFAULT_MAX_BSON_SIZE
   else
@@ -40,8 +52,7 @@ end
 
 if RUBY_PLATFORM =~ /java/
   jar_dir = File.join(File.dirname(__FILE__), '..', 'ext', 'java', 'jar')
-  require File.join(jar_dir, 'mongo-2.4.jar')
+  require File.join(jar_dir, 'mongo-2.6.5.jar')
-  require File.join(jar_dir, 'bson-2.2.jar')
   require File.join(jar_dir, 'jbson.jar')
   require 'bson/bson_java'
   module BSON
@@ -52,15 +63,12 @@ else
     # Need this for running test with and without c ext in Ruby 1.9.
     raise LoadError if ENV['TEST_MODE'] && !ENV['C_EXT']
 
-    # Raise LoadError unless little endian
+    # Raise LoadError unless little endian, since the C extensions
+    # only work on little-endian architectures.
     raise LoadError unless "\x01\x00\x00\x00".unpack("i").first == 1
 
     require 'bson_ext/cbson'
     raise LoadError unless defined?(CBson::VERSION)
-    if CBson::VERSION < MINIMUM_BSON_EXT_VERSION
-      puts "Able to load bson_ext version #{CBson::VERSION}, but >= #{MINIMUM_BSON_EXT_VERSION} is required."
-      raise LoadError
-    end
     require 'bson/bson_c'
     module BSON
       BSON_CODER = BSON_C
@@ -84,6 +92,7 @@ require 'bson/types/code'
 require 'bson/types/dbref'
 require 'bson/types/object_id'
 require 'bson/types/min_max_keys'
+require 'bson/types/timestamp'
 
 require 'base64'
 require 'bson/ordered_hash'

lib/bson/bson_c.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -20,8 +20,8 @@
 module BSON
   class BSON_C
 
-    def self.serialize(obj, check_keys=false, move_id=false)
+    def self.serialize(obj, check_keys=false, move_id=false, max_bson_size=BSON::DEFAULT_MAX_BSON_SIZE)
-      ByteBuffer.new(CBson.serialize(obj, check_keys, move_id))
+      ByteBuffer.new(CBson.serialize(obj, check_keys, move_id, max_bson_size))
     end
 
     def self.deserialize(buf=nil)
@@ -29,10 +29,12 @@ module BSON
     end
 
     def self.max_bson_size
+      warn "BSON::BSON_CODER.max_bson_size is deprecated and will be removed in v2.0."
       CBson.max_bson_size
     end
 
     def self.update_max_bson_size(connection)
+      warn "BSON::BSON_CODER.update_max_bson_size is deprecated and now a no-op. It will be removed in v2.0."
       CBson.update_max_bson_size(connection)
     end
   end

lib/bson/bson_java.rb

@@ -4,24 +4,26 @@ module BSON
 
     # TODO: Pool or cache instances of RubyBSONEncoder so that
     # we don't create a new one on each call to #serialize.
-    def self.serialize(obj, check_keys=false, move_id=false)
+    def self.serialize(obj, check_keys=false, move_id=false, max_bson_size=BSON::DEFAULT_MAX_BSON_SIZE)
       raise InvalidDocument, "BSON_JAVA.serialize takes a Hash" unless obj.is_a?(Hash)
-      enc = Java::OrgJbson::RubyBSONEncoder.new(JRuby.runtime, check_keys, move_id)
+      enc = Java::OrgJbson::RubyBSONEncoder.new(JRuby.runtime, check_keys, move_id, max_bson_size)
       ByteBuffer.new(enc.encode(obj))
     end
 
     def self.deserialize(buf)
-      dec = Java::OrgBson::BSONDecoder.new
+      dec = Java::OrgJbson::RubyBSONDecoder.new
       callback = Java::OrgJbson::RubyBSONCallback.new(JRuby.runtime)
       dec.decode(buf.to_s.to_java_bytes, callback)
       callback.get
     end
 
     def self.max_bson_size
+      warn "BSON::BSON_CODER.max_bson_size is deprecated and will be removed in v2.0."
       Java::OrgJbson::RubyBSONEncoder.max_bson_size(self)
     end
 
     def self.update_max_bson_size(connection)
+      warn "BSON::BSON_CODER.update_max_bson_size is deprecated and now a no-op. It will be removed in v2.0."
       Java::OrgJbson::RubyBSONEncoder.update_max_bson_size(self, connection)
     end
   end

lib/bson/bson_ruby.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -46,8 +46,8 @@ module BSON
     NUMBER_LONG = 18
     MAXKEY = 127
 
-    def initialize
+    def initialize(max_bson_size=BSON::DEFAULT_MAX_BSON_SIZE)
-      @buf = ByteBuffer.new
+      @buf = ByteBuffer.new('', max_bson_size)
       @encoder = BSON_RUBY
     end
 
@@ -57,7 +57,12 @@ module BSON
       BINARY_ENCODING = Encoding.find('binary')
 
       def self.to_utf8_binary(str)
-        str.encode(UTF8_ENCODING).force_encoding(BINARY_ENCODING)
+        begin
+          str.unpack("U*")
+        rescue
+          raise InvalidStringEncoding, "String not valid utf-8: #{str.inspect}"
+        end
+        str.dup.force_encoding(BINARY_ENCODING)
       end
     else
       NULL_BYTE = "\0"
@@ -65,7 +70,7 @@ module BSON
       def self.to_utf8_binary(str)
         begin
           str.unpack("U*")
-        rescue => ex
+        rescue
           raise InvalidStringEncoding, "String not valid utf-8: #{str.inspect}"
         end
         str
@@ -73,10 +78,12 @@ module BSON
     end
 
     def self.update_max_bson_size(connection)
+      warn "BSON::BSON_CODER.update_max_bson_size is deprecated and now a no-op. It will be removed in v2.0."
       @@max_bson_size = connection.max_bson_size
     end
 
     def self.max_bson_size
+      warn "BSON::BSON_CODER.max_bson_size is deprecated and will be removed in v2.0."
       @@max_bson_size
     end
 
@@ -100,8 +107,8 @@ module BSON
 
     # Serializes an object.
     # Implemented to ensure an API compatible with BSON extension.
-    def self.serialize(obj, check_keys=false, move_id=false)
+    def self.serialize(obj, check_keys=false, move_id=false, max_bson_size=BSON::DEFAULT_MAX_BSON_SIZE)
-      new.serialize(obj, check_keys, move_id)
+      new(max_bson_size).serialize(obj, check_keys, move_id)
     end
 
     def self.deserialize(buf=nil)
@@ -132,8 +139,9 @@ module BSON
       end
 
       serialize_eoo_element(@buf)
-      if @buf.size > @@max_bson_size
+      if @buf.size > @buf.max_size
-        raise InvalidDocument, "Document is too large (#{@buf.size}). BSON documents are limited to #{@@max_bson_size} bytes."
+        raise InvalidDocument, "Document is too large (#{@buf.size}). " +
+         "This BSON documents is limited to #{@buf.max_size} bytes."
       end
       @buf.put_int(@buf.size, 0)
       @buf
@@ -187,6 +195,8 @@ module BSON
         serialize_max_key_element(@buf, k)
       when MINKEY
         serialize_min_key_element(@buf, k)
+      when TIMESTAMP
+        serialize_timestamp_element(@buf, k, v)
       else
         raise "unhandled type #{type}"
       end
@@ -256,8 +266,7 @@ module BSON
           doc[key] = deserialize_code_w_scope_data(@buf)
         when TIMESTAMP
           key = deserialize_cstr(@buf)
-          doc[key] = [deserialize_number_int_data(@buf),
+          doc[key] = deserialize_timestamp_data(@buf)
-          deserialize_number_int_data(@buf)]
         when MAXKEY
           key = deserialize_cstr(@buf)
           doc[key] = MaxKey.new
@@ -337,10 +346,17 @@ module BSON
       opts = 0
       opts |= Regexp::IGNORECASE if options_str.include?('i')
       opts |= Regexp::MULTILINE if options_str.include?('m')
+      opts |= Regexp::MULTILINE if options_str.include?('s')
       opts |= Regexp::EXTENDED if options_str.include?('x')
       Regexp.new(str, opts)
     end
 
+    def deserialize_timestamp_data(buf)
+      increment = buf.get_int
+      seconds = buf.get_int
+      Timestamp.new(seconds, increment)
+    end
+
     def encoded_str(str)
       if RUBY_VERSION >= '1.9'
         str.force_encoding("utf-8")
@@ -488,7 +504,10 @@ module BSON
       options = val.options
       options_str = ''
       options_str << 'i' if ((options & Regexp::IGNORECASE) != 0)
-      options_str << 'm' if ((options & Regexp::MULTILINE) != 0)
+      if ((options & Regexp::MULTILINE) != 0)
+        options_str << 'm'
+        options_str << 's'
+      end
       options_str << 'x' if ((options & Regexp::EXTENDED) != 0)
       options_str << val.extra_options_str if val.respond_to?(:extra_options_str)
       # Must store option chars in alphabetical order
@@ -505,6 +524,14 @@ module BSON
       self.class.serialize_key(buf, key)
     end
 
+    def serialize_timestamp_element(buf, key, val)
+      buf.put(TIMESTAMP)
+      self.class.serialize_key(buf, key)
+
+      buf.put_int(val.increment)
+      buf.put_int(val.seconds)
+    end
+
     def serialize_oid_element(buf, key, val)
       buf.put(OID)
       self.class.serialize_key(buf, key)
@@ -593,6 +620,8 @@ module BSON
         MAXKEY
       when MinKey
         MINKEY
+      when Timestamp
+        TIMESTAMP
       when Numeric
         raise InvalidDocument, "Cannot serialize the Numeric type #{o.class} as BSON; only Fixum, Bignum, and Float are supported."
       when Date, DateTime

lib/bson/byte_buffer.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -20,9 +20,9 @@
 module BSON
   class ByteBuffer
 
-    attr_reader :order
+    attr_reader :order, :max_size
 
-    def initialize(initial_data="")
+    def initialize(initial_data="", max_size=BSON::DEFAULT_MAX_BSON_SIZE)
       @str = case initial_data
         when String then
           if initial_data.respond_to?(:force_encoding)
@@ -40,6 +40,7 @@ module BSON
       @order  = :little_endian
       @int_pack_order    = 'V'
       @double_pack_order = 'E'
+      @max_size = max_size
     end
 
     if RUBY_VERSION >= '1.9'
@@ -56,7 +57,7 @@ module BSON
       def self.to_utf8_binary(str)
         begin
         str.unpack("U*")
-        rescue => ex
+        rescue
           raise InvalidStringEncoding, "String not valid utf-8: #{str.inspect}"
         end
         str
@@ -232,12 +233,16 @@ module BSON
       @cursor < @str.size
     end
     
-    def to_a
+    def ==(other)
-      @str.unpack("C*")
+      other.respond_to?(:to_s) && @str == other.to_s
     end
 
-    def unpack(args)
+    def to_a(format="C*")
-      to_a
+      @str.unpack(format)
+    end
+
+    def unpack(format="C*")
+      to_a(format)
     end
 
     def to_s
@@ -245,7 +250,6 @@ module BSON
     end
 
     def dump
-      i = 0
       @str.each_byte do |c, i|
         $stderr.puts "#{'%04d' % i}: #{'%02x' % c} #{'%03o' % c} #{'%s' % c.chr} #{'%3d' % c}"
         i += 1

lib/bson/exceptions.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -29,10 +29,7 @@ module BSON
   # Raised when given a string is not valid utf-8 (Ruby 1.8 only).
   class InvalidStringEncoding < BSONError; end
 
-  # Raised when attempting to initialize an invalid ObjectID.
+  # Raised when attempting to initialize an invalid ObjectId.
-  class InvalidObjectID < BSONError; end
-
-  # Raised when attempting to initialize an invalid ObjectID.
   class InvalidObjectId < BSONError; end
 
   # Raised when trying to insert a document that exceeds the 4MB limit or

lib/bson/ordered_hash.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -57,16 +57,20 @@ module BSON
       end
 
       def initialize(*a, &b)
-        super
         @ordered_keys = []
+        super
+      end
+
+      def yaml_initialize(tag, val)
+        @ordered_keys = []        
+        super
       end
 
       def keys
-        @ordered_keys || []
+        @ordered_keys.dup
       end
 
       def []=(key, value)
-        @ordered_keys ||= []
         unless has_key?(key)
           @ordered_keys << key
         end
@@ -74,14 +78,12 @@ module BSON
       end
 
       def each
-        @ordered_keys ||= []
         @ordered_keys.each { |k| yield k, self[k] }
         self
       end
       alias :each_pair :each
 
       def to_a
-        @ordered_keys ||= []
         @ordered_keys.map { |k| [k, self[k]] }      
       end
 
@@ -89,6 +91,11 @@ module BSON
         collect { |k, v| v }
       end
 
+      def replace(other)
+        @ordered_keys.replace(other.keys)
+        super
+      end
+
       def merge(other)
         oh = self.dup
         oh.merge!(other)
@@ -96,7 +103,6 @@ module BSON
       end
 
       def merge!(other)
-        @ordered_keys ||= []
         @ordered_keys += other.keys # unordered if not an BSON::OrderedHash
         @ordered_keys.uniq!
         super(other)
@@ -104,10 +110,18 @@ module BSON
 
       alias :update :merge!
 
+      def dup
+        result = OrderedHash.new
+        @ordered_keys.each do |key|
+          result[key] = self[key]
+        end
+        result
+      end
+
       def inspect
-        str = '{'
+        str = "#<BSON::OrderedHash:0x#{self.object_id.to_s(16)} {"
         str << (@ordered_keys || []).collect { |k| "\"#{k}\"=>#{self.[](k).inspect}" }.join(", ")
-        str << '}'
+        str << '}>'
       end
 
       def delete(key, &block)
@@ -116,11 +130,12 @@ module BSON
       end
 
       def delete_if(&block)
-        self.each { |k,v|
+        keys.each do |key|
-          if yield k, v
+          if yield key, self[key]
-            delete(k)
+            delete(key)
           end
-        }
+        end
+        self
       end
 
       def reject(&block)
@@ -129,25 +144,38 @@ module BSON
         clone.delete_if(&block)
       end
 
+      def reject!(&block)
+        changed = false
+        self.each do |k,v|
+          if yield k, v
+            changed = true
+            delete(k)
+          end
+        end
+        changed ? self : nil
+      end
+
       def clear
         super
         @ordered_keys = []
       end
 
-      def hash
+      if RUBY_VERSION =~ /1.8.6/
-        code = 17
+        def hash
-        each_pair do |key, value|
+          code = 17
-          code = 37 * code + key.hash
+          each_pair do |key, value|
-          code = 37 * code + value.hash
+            code = 37 * code + key.hash
+            code = 37 * code + value.hash
+          end
+          code & 0x7fffffff
         end
-        code & 0x7fffffff
-      end
 
-      def eql?(o)
+        def eql?(o)
-        if o.instance_of? BSON::OrderedHash
+          if o.instance_of? BSON::OrderedHash
-          self.hash == o.hash
+            self.hash == o.hash
-        else
+          else
-          false
+            false
+          end
         end
       end
 

lib/bson/types/binary.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -43,7 +43,7 @@ module BSON
     #   SUBTYPE_BYTES, SUBTYPE_UUID, SUBTYPE_MD5, and SUBTYPE_USER_DEFINED.
     #
     # @see http://www.mongodb.org/display/DOCS/BSON#BSON-noteondatabinary BSON binary subtypes.
-    def initialize(data=[], subtype=SUBTYPE_BYTES)
+    def initialize(data=[], subtype=SUBTYPE_SIMPLE)
       super(data)
       @subtype = subtype
     end

lib/bson/types/code.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

lib/bson/types/dbref.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -26,7 +26,7 @@ module BSON
     # Create a DBRef. Use this class in conjunction with DB#dereference.
     #
     # @param [String] a collection name
-    # @param [ObjectID] an object id
+    # @param [ObjectId] an object id
     #
     # @core dbrefs constructor_details
     def initialize(namespace, object_id)

lib/bson/types/min_max_keys.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

lib/bson/types/object_id.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -30,8 +30,7 @@ module BSON
   #
   # @core objectids
   class ObjectId
-    @@lock  = Mutex.new
+    attr_accessor :data
-    @@index = 0
 
     # Create a new object id. If no parameter is given, an id corresponding
     # to the ObjectId BSON data type will be created. This is a 12-byte value
@@ -40,12 +39,15 @@ module BSON
     #
     # @param [Array] data should be an array of bytes. If you want
     #   to generate a standard MongoDB object id, leave this argument blank.
-    def initialize(data=nil)
+    #
-      @data = data || generate
+    # @option opts :data (nil) An array of bytes to use as the object id.
+    # @option opts :time (nil) The value of this object ids timestamp. Note that
+    #   the remaining bytes will consist of the standard machine id, pid, and counter. If
+    #   you need a zeroed timestamp, used ObjectId.from_time.
+    def initialize(data=nil, time=nil)
+      @data = data || generate(time)
     end
 
-    attr_accessor :data
-
     # Determine if the supplied string is legal. Legal strings will
     # consist of 24 hexadecimal characters.
     #
@@ -62,21 +64,30 @@ module BSON
     #
     # @param [Time] time a utc time to encode as an object id.
     #
-    # @return [Mongo::ObjectId]
+    # @option opts [:unique] (false) If false, the object id's bytes
+    #   succeeding the timestamp will be zeroed; if true, they'll
+    #   consist of the standard machine id, pid, and counter.
+    #
+    # @return [BSON::ObjectId]
     #
     # @example Return all document created before Jan 1, 2010.
     #   time = Time.utc(2010, 1, 1)
     #   time_id = ObjectId.from_time(time)
     #   collection.find({'_id' => {'$lt' => time_id}})
-    def self.from_time(time)
+    def self.from_time(time, opts={})
-      self.new([time.to_i,0,0].pack("NNN").unpack("C12"))
+      unique = opts.fetch(:unique, false)
+      if unique
+        self.new(nil, time)
+      else
+        self.new([time.to_i,0,0].pack("NNN").unpack("C12"))
+      end
     end
 
     # Adds a primary key to the given document if needed.
     #
     # @param [Hash] doc a document requiring an _id.
     #
-    # @return [Mongo::ObjectId, Object] returns a newly-created or 
+    # @return [BSON::ObjectId, Object] returns a newly-created or 
     #   current _id for the given document.
     def self.create_pk(doc)
       doc.has_key?(:_id) || doc.has_key?('_id') ? doc : doc.merge!(:_id => self.new)
@@ -84,9 +95,9 @@ module BSON
 
     # Check equality of this object id with another.
     #
-    # @param [Mongo::ObjectId] object_id
+    # @param [BSON::ObjectId] object_id
     def eql?(object_id)
-      @data == object_id.instance_variable_get("@data")
+      object_id.kind_of?(BSON::ObjectId) and self.data == object_id.data
     end
     alias_method :==, :eql?
 
@@ -105,11 +116,11 @@ module BSON
       @data.dup
     end
 
-    # Get the array representation without cloning.
+    # Returns the object id as a single element in an array for use with Kernel#Array
     #
     # @return [Array]
-    def data
+    def to_ary
-      @data
+      [ self ]
     end
 
     # Given a string representation of an ObjectId, return a new ObjectId
@@ -117,9 +128,9 @@ module BSON
     #
     # @param [String] str
     #
-    # @return [Mongo::ObjectId]
+    # @return [BSON::ObjectId]
     def self.from_string(str)
-      raise InvalidObjectId, "illegal ObjectId format" unless legal?(str)
+      raise InvalidObjectId, "illegal ObjectId format: #{str}" unless legal?(str)
       data = []
       12.times do |i|
         data[i] = str[i * 2, 2].to_i(16)
@@ -163,31 +174,63 @@ module BSON
       Time.at(@data.pack("C4").unpack("N")[0]).utc
     end
 
-    private
+    def self.machine_id
-
+      @@machine_id
-    # This gets overwritten by the C extension if it loads.
-    def generate
-      oid = ''
-
-      # 4 bytes current time
-      time = Time.new.to_i
-      oid += [time].pack("N")
-
-      # 3 bytes machine
-      oid += Digest::MD5.digest(Socket.gethostname)[0, 3]
-
-      # 2 bytes pid
-      oid += [Process.pid % 0xFFFF].pack("n")
-
-      # 3 bytes inc
-      oid += [get_inc].pack("N")[1, 3]
-
-      oid.unpack("C12")
     end
 
-    def get_inc
+    private
-      @@lock.synchronize do
+
-        @@index = (@@index + 1) % 0xFFFFFF
+    if RUBY_PLATFORM =~ /java/
+      @@generator = Java::OrgBsonTypes::ObjectId
+      @@machine_id = [@@generator.genMachineId].pack("N")[0,3]
+
+      def generate(oid_time=nil)
+        data = (oid_time ? @@generator.new(oid_time) : @@generator.new)
+
+        oid = ''
+        oid += [data.timeSecond].pack("N")
+        oid += [data._machine].pack("N")
+        oid += [data._inc].pack("N")
+        oid.unpack("C12")
+      end
+
+    else
+      @@lock  = Mutex.new
+      @@index = 0
+      @@machine_id = Digest::MD5.digest(Socket.gethostname)[0, 3]
+
+      # We need to check whether BSON_CODER is defined because it's required by
+      # the BSON C extensions.
+      if defined?(BSON::BSON_CODER) && BSON::BSON_CODER == BSON::BSON_RUBY
+        # This gets overwritten by the C extension if it loads.
+        def generate(oid_time=nil)
+          oid = ''
+
+          # 4 bytes current time
+          if oid_time
+            t = oid_time.to_i
+          else
+            t = Time.new.to_i
+          end
+          oid += [t].pack("N")
+
+          # 3 bytes machine
+          oid += @@machine_id
+
+          # 2 bytes pid
+          oid += [Process.pid % 0xFFFF].pack("n")
+
+          # 3 bytes inc
+          oid += [get_inc].pack("N")[1, 3]
+
+          oid.unpack("C12")
+        end
+
+        def get_inc
+          @@lock.synchronize do
+            @@index = (@@index + 1) % 0xFFFFFF
+          end
+        end
       end
     end
   end

lib/bson/types/timestamp.rb

@@ -0,0 +1,76 @@
+# encoding: UTF-8
+
+# --
+# Copyright (C) 2008-2011 10gen Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ++
+
+module BSON
+
+  # A class for representing BSON Timestamps. The Timestamp type is used
+  # by MongoDB internally; thus, it should be used by application developers
+  # for diagnostic purposes only.
+  class Timestamp
+    include Enumerable
+
+    attr_reader :seconds, :increment
+
+    # Create a new BSON Timestamp.
+    #
+    # @param [Integer] seconds The number of seconds 
+    # @param increment
+    def initialize(seconds, increment)
+      @seconds   = seconds
+      @increment = increment
+    end
+
+    def to_s
+      "seconds: #{seconds}, increment: #{increment}"
+    end
+
+    def ==(other)
+      self.seconds == other.seconds &&
+        self.increment == other.increment
+    end
+
+    # This is for backward-compatibility. Timestamps in the Ruby
+    # driver used to deserialize as arrays. So we provide
+    # an equivalent interface.
+    #
+    # @deprecated
+    def [](index)
+      warn "Timestamps are no longer deserialized as arrays. If you're working " +
+        "with BSON Timestamp objects, see the BSON::Timestamp class. This usage will " +
+        "be deprecated in Ruby Driver v2.0."
+      if index == 0
+        self.increment
+      elsif index == 1
+        self.seconds
+      else
+        nil
+      end
+    end
+
+    # This method exists only for backward-compatibility.
+    #
+    # @deprecated
+    def each
+      i = 0
+      while i < 2
+        yield self[i]
+        i += 1
+      end
+    end
+  end
+end

lib/bson/version.rb

@@ -0,0 +1,3 @@
+module BSON
+  VERSION = "1.6.2"
+end

lib/mongo.rb

@@ -1,15 +1,28 @@
 # encoding: UTF-8
+#
+# --
+# Copyright (C) 2008-2011 10gen Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ++
 
-$:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
+require 'mongo/version'
 
 module Mongo
-  VERSION = "1.2.rc2"
+  ASCENDING   =  1
-end
+  DESCENDING  = -1
-
+  GEO2D       = '2d'
-module Mongo
+  GEOHAYSTACK = 'geoHaystack'
-  ASCENDING  =  1
-  DESCENDING = -1
-  GEO2D      = '2d'
 
   DEFAULT_MAX_BSON_SIZE = 4 * 1024 * 1024
 
@@ -42,11 +55,17 @@ require 'bson'
 require 'mongo/util/conversions'
 require 'mongo/util/support'
 require 'mongo/util/core_ext'
+require 'mongo/util/logging'
+require 'mongo/util/node'
 require 'mongo/util/pool'
+require 'mongo/util/pool_manager'
 require 'mongo/util/server_version'
+require 'mongo/util/ssl_socket'
+require 'mongo/util/tcp_socket'
 require 'mongo/util/uri_parser'
 
 require 'mongo/collection'
+require 'mongo/networking'
 require 'mongo/connection'
 require 'mongo/repl_set_connection'
 require 'mongo/cursor'
@@ -59,5 +78,3 @@ if RUBY_PLATFORM =~ /java/
   require 'mongo/gridfs/grid_io_fix'
 end
 require 'mongo/gridfs/grid_file_system'
-
-

lib/mongo/collection.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -19,6 +19,7 @@ module Mongo
 
   # A named collection of documents in a database.
   class Collection
+    include Mongo::Logging
 
     attr_reader :db, :name, :pk_factory, :hint, :safe
 
@@ -34,6 +35,11 @@ module Mongo
     #   for insert, update, and remove method called on this Collection instance. If no
     #   value is provided, the default value set on this instance's DB will be used. This
     #   default can be overridden for any invocation of insert, update, or remove.
+    # @option options [:primary, :secondary] :read The default read preference for queries
+    #   initiates from this connection object. If +:secondary+ is chosen, reads will be sent
+    #   to one of the closest available secondary nodes. If a secondary node cannot be located, the
+    #   read will be sent to the primary. If this option is left unspecified, the value of the read
+    #   preference for this collection's associated Mongo::DB object will be used.
     #
     # @raise [InvalidNSName]
     #   if collection name is empty, contains '$', or starts or ends with '.'
@@ -47,7 +53,8 @@ module Mongo
     def initialize(name, db, opts={})
       if db.is_a?(String) && name.is_a?(Mongo::DB)
         warn "Warning: the order of parameters to initialize a collection have changed. " +
-             "Please specify the collection name first, followed by the db."
+             "Please specify the collection name first, followed by the db. This will be made permanent" +
+             "in v2.0."
         db, name = name, db
       end
 
@@ -84,15 +91,31 @@ module Mongo
       @cache = Hash.new(0)
       unless pk_factory
         @safe = opts.fetch(:safe, @db.safe)
+        if value = opts[:read]
+          Mongo::Support.validate_read_preference(value)
+        else
+          value = @db.read_preference
+        end
+        @read_preference = value.is_a?(Hash) ? value.dup : value
       end
       @pk_factory = pk_factory || opts[:pk] || BSON::ObjectId
       @hint = nil
     end
 
+    # Indicate whether this is a capped collection.
+    #
+    # @raise [Mongo::OperationFailure]
+    #   if the collection doesn't exist.
+    #
+    # @return [Boolean]
+    def capped?
+      @db.command({:collstats => @name})['capped'] == 1
+    end
+
     # Return a sub-collection of this collection by name. If 'users' is a collection, then
     # 'users.comments' is a sub-collection of users.
     #
-    # @param [String] name
+    # @param [String, Symbol] name
     #   the collection to return
     #
     # @raise [Mongo::InvalidNSName]
@@ -102,7 +125,8 @@ module Mongo
     #   the specified sub-collection
     def [](name)
       name = "#{self.name}.#{name}"
-      return Collection.new(name, db) if !db.strict? || db.collection_names.include?(name)
+      return Collection.new(name, db) if !db.strict? ||
+        db.collection_names.include?(name.to_s)
       raise "Collection #{name} doesn't exist. Currently in strict mode."
     end
 
@@ -144,20 +168,34 @@ module Mongo
     #   you can cut down on network traffic and decoding time. If using a Hash, keys should be field
     #   names and values should be either 1 or 0, depending on whether you want to include or exclude
     #   the given field.
+    # @option opts [:primary, :secondary] :read The default read preference for queries
+    #   initiates from this connection object. If +:secondary+ is chosen, reads will be sent
+    #   to one of the closest available secondary nodes. If a secondary node cannot be located, the
+    #   read will be sent to the primary. If this option is left unspecified, the value of the read
+    #   preference for this Collection object will be used.
     # @option opts [Integer] :skip number of documents to skip from the beginning of the result set
     # @option opts [Integer] :limit maximum number of documents to return
     # @option opts [Array]   :sort an array of [key, direction] pairs to sort by. Direction should
     #   be specified as Mongo::ASCENDING (or :ascending / :asc) or Mongo::DESCENDING (or :descending / :desc)
-    # @option opts [String, Array, OrderedHash] :hint hint for query optimizer, usually not necessary if using MongoDB > 1.1
+    # @option opts [String, Array, OrderedHash] :hint hint for query optimizer, usually not necessary if
+    #   using MongoDB > 1.1
     # @option opts [Boolean] :snapshot (false) if true, snapshot mode will be used for this query.
     #   Snapshot mode assures no duplicates are returned, or objects missed, which were preset at both the start and
-    #   end of the query's execution. For details see http://www.mongodb.org/display/DOCS/How+to+do+Snapshotting+in+the+Mongo+Database
+    #   end of the query's execution.
-    # @option opts [Boolean] :batch_size (100) the number of documents to returned by the database per GETMORE operation. A value of 0
+    #   For details see http://www.mongodb.org/display/DOCS/How+to+do+Snapshotting+in+the+Mongo+Database
-    #   will let the database server decide how many results to returns. This option can be ignored for most use cases.
+    # @option opts [Boolean] :batch_size (100) the number of documents to returned by the database per
+    #   GETMORE operation. A value of 0 will let the database server decide how many results to return.
+    #   This option can be ignored for most use cases.
     # @option opts [Boolean] :timeout (true) when +true+, the returned cursor will be subject to
-    #   the normal cursor timeout behavior of the mongod process. When +false+, the returned cursor will never timeout. Note
+    #   the normal cursor timeout behavior of the mongod process. When +false+, the returned cursor will
-    #   that disabling timeout will only work when #find is invoked with a block. This is to prevent any inadvertant failure to
+    #   never timeout. Note that disabling timeout will only work when #find is invoked with a block.
-    #   close the cursor, as the cursor is explicitly closed when block code finishes.
+    #   This is to prevent any inadvertant failure to close the cursor, as the cursor is explicitly
+    #   closed when block code finishes.
+    # @option opts [Integer] :max_scan (nil) Limit the number of items to scan on both collection scans and indexed queries..
+    # @option opts [Boolean] :show_disk_loc (false) Return the disk location of each query result (for debugging).
+    # @option opts [Boolean] :return_key (false) Return the index key used to obtain the result (for debugging).
+    # @option opts [Block] :transformer (nil) a block for tranforming returned documents.
+    #   This is normally used by object mappers to convert each returned document to an instance of a class.
     #
     # @raise [ArgumentError]
     #   if timeout is set to false and find is not invoked in a block
@@ -167,6 +205,7 @@ module Mongo
     #
     # @core find find-instance_method
     def find(selector={}, opts={})
+      opts   = opts.dup
       fields = opts.delete(:fields)
       fields = ["_id"] if fields && fields.empty?
       skip   = opts.delete(:skip) || skip || 0
@@ -176,6 +215,11 @@ module Mongo
       snapshot   = opts.delete(:snapshot)
       batch_size = opts.delete(:batch_size)
       timeout    = (opts.delete(:timeout) == false) ? false : true
+      max_scan   = opts.delete(:max_scan)
+      return_key = opts.delete(:return_key)
+      transformer = opts.delete(:transformer)
+      show_disk_loc = opts.delete(:show_disk_loc)
+      read          = opts.delete(:read) || @read_preference
 
       if timeout == false && !block_given?
         raise ArgumentError, "Collection#find must be invoked with a block when timeout is disabled."
@@ -189,8 +233,22 @@ module Mongo
 
       raise RuntimeError, "Unknown options [#{opts.inspect}]" unless opts.empty?
 
-      cursor = Cursor.new(self, :selector => selector, :fields => fields, :skip => skip, :limit => limit,
+      cursor = Cursor.new(self, {
-        :order => sort, :hint => hint, :snapshot => snapshot, :timeout => timeout, :batch_size => batch_size)
+        :selector    => selector,
+        :fields      => fields,
+        :skip        => skip,
+        :limit       => limit,
+        :order       => sort,
+        :hint        => hint,
+        :snapshot    => snapshot,
+        :timeout     => timeout,
+        :batch_size  => batch_size,
+        :transformer => transformer,
+        :max_scan    => max_scan,
+        :show_disk_loc => show_disk_loc,
+        :return_key    => return_key,
+        :read          => read
+      })
 
       if block_given?
         yield cursor
@@ -246,8 +304,6 @@ module Mongo
     #   for DB#error.
     #
     # @raise [OperationFailure] when :safe mode fails.
-    #
-    # @see DB#remove for options that can be passed to :safe.
     def save(doc, opts={})
       if doc.has_key?(:_id) || doc.has_key?('_id')
         id = doc[:_id] || doc['_id']
@@ -265,6 +321,10 @@ module Mongo
     #
     # @return [ObjectId, Array]
     #   The _id of the inserted document or a list of _ids of all inserted documents.
+    # @return [[ObjectId, Array], [Hash, Array]]
+    #   1st, the _id of the inserted document or a list of _ids of all inserted documents.
+    #   2nd, a list of invalid documents.
+    #   Return this result format only when :collect_on_error is true.
     #
     # @option opts [Boolean, Hash] :safe (+false+)
     #   run the operation in safe mode, which run a getlasterror command on the
@@ -274,14 +334,23 @@ module Mongo
     #   its database object, or the current connection. See the options on
     #   for DB#get_last_error.
     #
-    # @see DB#remove for options that can be passed to :safe.
+    # @option opts [Boolean] :continue_on_error (+false+) If true, then
+    #   continue a bulk insert even if one of the documents inserted
+    #   triggers a database assertion (as in a duplicate insert, for instance).
+    #   If not using safe mode, the list of ids returned will
+    #   include the object ids of all documents attempted on insert, even
+    #   if some are rejected on error. When safe mode is
+    #   enabled, any error will raise an OperationFailure exception.
+    #   MongoDB v2.0+.
+    # @option opts [Boolean] :collect_on_error (+false+) if true, then
+    #   collects invalid documents as an array. Note that this option changes the result format.
     #
     # @core insert insert-instance_method
     def insert(doc_or_docs, opts={})
       doc_or_docs = [doc_or_docs] unless doc_or_docs.is_a?(Array)
       doc_or_docs.collect! { |doc| @pk_factory.create_pk(doc) }
       safe = opts.fetch(:safe, @safe)
-      result = insert_documents(doc_or_docs, @name, true, safe)
+      result = insert_documents(doc_or_docs, @name, true, safe, opts)
       result.size > 1 ? result : result.first
     end
     alias_method :<<, :insert
@@ -311,8 +380,6 @@ module Mongo
     # @raise [Mongo::OperationFailure] an exception will be raised iff safe mode is enabled
     #   and the operation fails.
     #
-    # @see DB#remove for options that can be passed to :safe.
-    #
     # @core remove remove-instance_method
     def remove(selector={}, opts={})
       # Initial byte is 0.
@@ -320,14 +387,15 @@ module Mongo
       message = BSON::ByteBuffer.new("\0\0\0\0")
       BSON::BSON_RUBY.serialize_cstr(message, "#{@db.name}.#{@name}")
       message.put_int(0)
-      message.put_binary(BSON::BSON_CODER.serialize(selector, false, true).to_s)
+      message.put_binary(BSON::BSON_CODER.serialize(selector, false, true, @connection.max_bson_size).to_s)
 
-      @logger.debug("MONGODB #{@db.name}['#{@name}'].remove(#{selector.inspect})") if @logger
+      instrument(:remove, :database => @db.name, :collection => @name, :selector => selector) do
-      if safe
+        if safe
-        @connection.send_message_with_safe_check(Mongo::Constants::OP_DELETE, message, @db.name, nil, safe)
+          @connection.send_message_with_safe_check(Mongo::Constants::OP_DELETE, message, @db.name, nil, safe)
-      else
+        else
-        @connection.send_message(Mongo::Constants::OP_DELETE, message)
+          @connection.send_message(Mongo::Constants::OP_DELETE, message)
-        true
+          true
+        end
       end
     end
 
@@ -366,12 +434,14 @@ module Mongo
       update_options += 2 if opts[:multi]
       message.put_int(update_options)
       message.put_binary(BSON::BSON_CODER.serialize(selector, false, true).to_s)
-      message.put_binary(BSON::BSON_CODER.serialize(document, false, true).to_s)
+      message.put_binary(BSON::BSON_CODER.serialize(document, false, true, @connection.max_bson_size).to_s)
-      @logger.debug("MONGODB #{@db.name}['#{@name}'].update(#{selector.inspect}, #{document.inspect})") if @logger
+
-      if safe
+      instrument(:update, :database => @db.name, :collection => @name, :selector => selector, :document => document) do
-        @connection.send_message_with_safe_check(Mongo::Constants::OP_UPDATE, message, @db.name, nil, safe)
+        if safe
-      else
+          @connection.send_message_with_safe_check(Mongo::Constants::OP_UPDATE, message, @db.name, nil, safe)
-        @connection.send_message(Mongo::Constants::OP_UPDATE, message, nil)
+        else
+          @connection.send_message(Mongo::Constants::OP_UPDATE, message)
+        end
       end
     end
 
@@ -418,8 +488,9 @@ module Mongo
     #
     # @core indexes create_index-instance_method
     def create_index(spec, opts={})
-      opts[:dropDups] = opts.delete(:drop_dups) if opts[:drop_dups]
+      opts[:dropDups] = opts[:drop_dups] if opts[:drop_dups]
       field_spec = parse_index_spec(spec)
+      opts = opts.dup
       name = opts.delete(:name) || generate_index_name(field_spec)
       name = name.to_s if name
 
@@ -445,9 +516,10 @@ module Mongo
     # @return [String] the name of the index.
     def ensure_index(spec, opts={})
       now = Time.now.utc.to_i
+      opts[:dropDups] = opts[:drop_dups] if opts[:drop_dups]
       field_spec = parse_index_spec(spec)
 
-      name = opts.delete(:name) || generate_index_name(field_spec)
+      name = opts[:name] || generate_index_name(field_spec)
       name = name.to_s if name
 
       if !@cache[name] || @cache[name] <= now
@@ -465,6 +537,9 @@ module Mongo
     #
     # @core indexes
     def drop_index(name)
+      if name.is_a?(Array)
+        return drop_index(index_name(name))
+      end
       @cache[name.to_s] = nil
       @db.drop_index(@name, name)
     end
@@ -507,7 +582,7 @@ module Mongo
       @db.command(cmd)['value']
     end
 
-    # Perform a map/reduce operation on the current collection.
+    # Perform a map-reduce operation on the current collection.
     #
     # @param [String, BSON::Code] map a map function, written in JavaScript.
     # @param [String, BSON::Code] reduce a reduce function, written in JavaScript.
@@ -519,13 +594,20 @@ module Mongo
     # @option opts [Integer] :limit (nil) if passing a query, number of objects to return from the collection.
     # @option opts [String, BSON::Code] :finalize (nil) a javascript function to apply to the result set after the
     #   map/reduce operation has finished.
-    # @option opts [String] :out (nil) the name of the output collection. If specified, the collection will not be treated as temporary.
+    # @option opts [String] :out (nil) a valid output type. In versions of MongoDB prior to v1.7.6,
-    # @option opts [Boolean] :keeptemp (false) if true, the generated collection will be persisted. default is false.
+    #   this option takes the name of a collection for the output results. In versions 1.7.6 and later,
+    #   this option specifies the output type. See the core docs for available output types.
+    # @option opts [Boolean] :keeptemp (false) if true, the generated collection will be persisted. The defualt
+    #   is false. Note that this option has no effect is versions of MongoDB > v1.7.6.
     # @option opts [Boolean ] :verbose (false) if true, provides statistics on job execution time.
     # @option opts [Boolean] :raw (false) if true, return the raw result object from the map_reduce command, and not
-    #   the instantiated collection that's returned by default.
+    #   the instantiated collection that's returned by default. Note if a collection name isn't returned in the
+    #   map-reduce output (as, for example, when using :out => { :inline => 1 }), then you must specify this option
+    #   or an ArgumentError will be raised.
     #
-    # @return [Collection] a collection containing the results of the operation.
+    # @return [Collection, Hash] a Mongo::Collection object or a Hash with the map-reduce command's results.
+    #
+    # @raise ArgumentError if you specify { :out => { :inline => true }} but don't specify :raw => true.
     #
     # @see http://www.mongodb.org/display/DOCS/MapReduce Offical MongoDB map/reduce documentation.
     #
@@ -540,6 +622,9 @@ module Mongo
       hash['map'] = map
       hash['reduce'] = reduce
       hash.merge! opts
+      if hash[:sort]
+        hash[:sort] = Mongo::Support.format_order_clause(hash[:sort])
+      end
 
       result = @db.command(hash)
       unless Mongo::Support.ok?(result)
@@ -548,8 +633,16 @@ module Mongo
 
       if raw
         result
+      elsif result["result"]
+        if result['result'].is_a? BSON::OrderedHash and result['result'].has_key? 'db' and result['result'].has_key? 'collection'
+          otherdb = @db.connection[result['result']['db']]
+          otherdb[result['result']['collection']]
+        else
+          @db[result["result"]]
+        end
       else
-        @db[result["result"]]
+        raise ArgumentError, "Could not instantiate collection from result. If you specified " +
+          "{:out => {:inline => true}}, then you must also specify :raw => true to get the results."
       end
     end
     alias :mapreduce :map_reduce
@@ -570,11 +663,11 @@ module Mongo
     #   set to true.
     #
     # @return [Array] the command response consisting of grouped items.
-    def group(key, condition={}, initial={}, reduce=nil, finalize=nil)
+    def group(opts, condition={}, initial={}, reduce=nil, finalize=nil)
-      if key.is_a?(Hash)
+      if opts.is_a?(Hash)
-        return new_group(key)
+        return new_group(opts)
       else
-        warn "Collection#group no longer take a list of paramters. This usage is deprecated." +
+        warn "Collection#group no longer take a list of parameters. This usage is deprecated and will be remove in v2.0." +
              "Check out the new API at http://api.mongodb.org/ruby/current/Mongo/Collection.html#group-instance_method"
       end
 
@@ -589,19 +682,19 @@ module Mongo
         }
       }
 
-      if key.is_a?(Symbol)
+      if opts.is_a?(Symbol)
         raise MongoArgumentError, "Group takes either an array of fields to group by or a JavaScript function" +
           "in the form of a String or BSON::Code."
       end
 
-      unless key.nil?
+      unless opts.nil?
-        if key.is_a? Array
+        if opts.is_a? Array
           key_type = "key"
           key_value = {}
-          key.each { |k| key_value[k] = 1 }
+          opts.each { |k| key_value[k] = 1 }
         else
           key_type  = "$keyf"
-          key_value = key.is_a?(BSON::Code) ? key : BSON::Code.new(key)
+          key_value = opts.is_a?(BSON::Code) ? opts : BSON::Code.new(opts)
         end
 
         group_command["group"][key_type] = key_value
@@ -621,6 +714,13 @@ module Mongo
       end
     end
 
+    # The value of the read preference. This will be
+    # either +:primary+, +:secondary+, or an object
+    # representing the tags to be read from.
+    def read_preference
+      @read_preference
+    end
+
     private
 
     def new_group(opts={})
@@ -757,9 +857,15 @@ module Mongo
 
     # Get the number of documents in this collection.
     #
+    # @option opts [Hash] :query ({}) A query selector for filtering the documents counted.
+    # @option opts [Integer] :skip (nil) The number of documents to skip.
+    # @option opts [Integer] :limit (nil) The number of documents to limit.
+    #
     # @return [Integer]
-    def count
+    def count(opts={})
-      find().count()
+      find(opts[:query],
+           :skip => opts[:skip],
+           :limit => opts[:limit]).count(true)
     end
 
     alias :size :count
@@ -783,13 +889,21 @@ module Mongo
 
     private
 
+    def index_name(spec)
+      field_spec = parse_index_spec(spec)
+      index_information.each do |index|
+        return index[0] if index[1]['key'] == field_spec
+      end
+      nil
+    end
+
     def parse_index_spec(spec)
       field_spec = BSON::OrderedHash.new
       if spec.is_a?(String) || spec.is_a?(Symbol)
         field_spec[spec.to_s] = 1
       elsif spec.is_a?(Array) && spec.all? {|field| field.is_a?(Array) }
         spec.each do |f|
-          if [Mongo::ASCENDING, Mongo::DESCENDING, Mongo::GEO2D].include?(f[1])
+          if [Mongo::ASCENDING, Mongo::DESCENDING, Mongo::GEO2D, Mongo::GEOHAYSTACK].include?(f[1])
             field_spec[f[0].to_s] = f[1]
           else
             raise MongoArgumentError, "Invalid index field #{f[1].inspect}; " +
@@ -829,22 +943,51 @@ module Mongo
     # Sends a Mongo::Constants::OP_INSERT message to the database.
     # Takes an array of +documents+, an optional +collection_name+, and a
     # +check_keys+ setting.
-    def insert_documents(documents, collection_name=@name, check_keys=true, safe=false)
+    def insert_documents(documents, collection_name=@name, check_keys=true, safe=false, flags={})
-      # Initial byte is 0.
+      if flags[:continue_on_error]
-      message = BSON::ByteBuffer.new("\0\0\0\0")
+        message = BSON::ByteBuffer.new
-      BSON::BSON_RUBY.serialize_cstr(message, "#{@db.name}.#{collection_name}")
+        message.put_int(1)
-      documents.each do |doc|
+      else
-        message.put_binary(BSON::BSON_CODER.serialize(doc, check_keys, true).to_s)
+        message = BSON::ByteBuffer.new("\0\0\0\0")
       end
+
+      collect_on_error = !!flags[:collect_on_error]
+      error_docs = [] if collect_on_error
+
+      BSON::BSON_RUBY.serialize_cstr(message, "#{@db.name}.#{collection_name}")
+      documents =
+        if collect_on_error
+          documents.select do |doc|
+            begin
+              message.put_binary(BSON::BSON_CODER.serialize(doc, check_keys, true, @connection.max_bson_size).to_s)
+              true
+            rescue StandardError # StandardError will be replaced with BSONError
+              doc.delete(:_id)
+              error_docs << doc
+              false
+            end
+          end
+        else
+          documents.each do |doc|
+            message.put_binary(BSON::BSON_CODER.serialize(doc, check_keys, true, @connection.max_bson_size).to_s)
+          end
+        end
       raise InvalidOperation, "Exceded maximum insert size of 16,000,000 bytes" if message.size > 16_000_000
 
-      @logger.debug("MONGODB #{@db.name}['#{collection_name}'].insert(#{documents.inspect})") if @logger
+      instrument(:insert, :database => @db.name, :collection => collection_name, :documents => documents) do
-      if safe
+        if safe
-        @connection.send_message_with_safe_check(Mongo::Constants::OP_INSERT, message, @db.name, nil, safe)
+          @connection.send_message_with_safe_check(Mongo::Constants::OP_INSERT, message, @db.name, nil, safe)
-      else
+        else
-        @connection.send_message(Mongo::Constants::OP_INSERT, message, nil)
+          @connection.send_message(Mongo::Constants::OP_INSERT, message)
+        end
+      end
+
+      doc_ids = documents.collect { |o| o[:_id] || o['_id'] }
+      if collect_on_error
+        return doc_ids, error_docs
+      else
+        doc_ids
       end
-      documents.collect { |o| o[:_id] || o['_id'] }
     end
 
     def generate_index_name(spec)

lib/mongo/connection.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -19,29 +19,34 @@
 require 'set'
 require 'socket'
 require 'thread'
-
 module Mongo
 
-  # Instantiates and manages connections to MongoDB.
+  # Instantiates and manages self.connections to MongoDB.
   class Connection
-    TCPSocket = ::TCPSocket
+    include Mongo::Logging
+    include Mongo::Networking
+
+    TCPSocket = Mongo::TCPSocket
     Mutex = ::Mutex
     ConditionVariable = ::ConditionVariable
 
-    # Abort connections if a ConnectionError is raised.
     Thread.abort_on_exception = true
 
+    DEFAULT_HOST = 'localhost'
     DEFAULT_PORT = 27017
-    STANDARD_HEADER_SIZE = 16
+    GENERIC_OPTS = [:ssl, :auths, :pool_size, :pool_timeout, :timeout, :op_timeout, :connect_timeout, :safe, :logger, :connect]
-    RESPONSE_HEADER_SIZE = 20
+    CONNECTION_OPTS = [:slave_ok]
 
-    attr_reader :logger, :size, :auths, :primary, :safe, :primary_pool, :host_to_try
+    mongo_thread_local_accessor :connections
 
-    # Counter for generating unique request ids.
+    attr_reader :logger, :size, :auths, :primary, :safe, :host_to_try,
-    @@current_request_id = 0
+      :pool_size, :connect_timeout, :pool_timeout,
+      :primary_pool, :socket_class, :op_timeout
 
     # Create a connection to single MongoDB instance.
     #
+    # If no args are provided, it will check <code>ENV["MONGODB_URI"]</code>.
+    #
     # You may specify whether connection to slave is permitted.
     # In all cases, the default host is "localhost" and the default port is 27017.
     #
@@ -52,7 +57,7 @@ module Mongo
     # Connection#arbiters. This is useful if your application needs to connect manually to nodes other
     # than the primary.
     #
-    # @param [String, Hash] host.
+    # @param [String, Hash] host
     # @param [Integer] port specify a port number here if only one host is being specified.
     #
     # @option opts [Boolean, Hash] :safe (false) Set the default safe-mode options
@@ -61,40 +66,67 @@ module Mongo
     #   on initialization.
     # @option opts [Boolean] :slave_ok (false) Must be set to +true+ when connecting
     #   to a single, slave node.
-    # @option opts [Logger, #debug] :logger (nil) Logger instance to receive driver operation log.
+    # @option opts [Logger, #debug] :logger (nil) A Logger instance for debugging driver ops. Note that
-    # @option opts [Integer] :pool_size (1) The maximum number of socket connections allowed per
+    #   logging negatively impacts performance; therefore, it should not be used for high-performance apps.
+    # @option opts [Integer] :pool_size (1) The maximum number of socket self.connections allowed per
     #   connection pool. Note: this setting is relevant only for multi-threaded applications.
-    # @option opts [Float] :timeout (5.0) When all of the connections a pool are checked out,
+    # @option opts [Float] :timeout (5.0) When all of the self.connections a pool are checked out,
     #   this is the number of seconds to wait for a new connection to be released before throwing an exception.
     #   Note: this setting is relevant only for multi-threaded applications (which in Ruby are rare).
+    # @option opts [Float] :op_timeout (nil) The number of seconds to wait for a read operation to time out.
+    #   Disabled by default.
+    # @option opts [Float] :connect_timeout (nil) The number of seconds to wait before timing out a
+    #   connection attempt.
+    # @option opts [Boolean] :ssl (false) If true, create the connection to the server using SSL.
+    #
+    # @example localhost, 27017 (or <code>ENV["MONGODB_URI"]</code> if available)
+    #   Mongo::Connection.new
     #
     # @example localhost, 27017
-    #   Connection.new
+    #   Mongo::Connection.new("localhost")
     #
-    # @example localhost, 27017
+    # @example localhost, 3000, max 5 self.connections, with max 5 seconds of wait time.
-    #   Connection.new("localhost")
+    #   Mongo::Connection.new("localhost", 3000, :pool_size => 5, :timeout => 5)
-    #
-    # @example localhost, 3000, max 5 connections, with max 5 seconds of wait time.
-    #   Connection.new("localhost", 3000, :pool_size => 5, :timeout => 5)
     #
     # @example localhost, 3000, where this node may be a slave
-    #   Connection.new("localhost", 3000, :slave_ok => true)
+    #   Mongo::Connection.new("localhost", 3000, :slave_ok => true)
     #
     # @see http://api.mongodb.org/ruby/current/file.REPLICA_SETS.html Replica sets in Ruby
     #
     # @raise [ReplicaSetConnectionError] This is raised if a replica set name is specified and the
     #   driver fails to connect to a replica set with that name.
     #
-    # @core connections
+    # @raise [MongoArgumentError] If called with no arguments and <code>ENV["MONGODB_URI"]</code> implies a replica set.
+    #
+    # @core self.connections
     def initialize(host=nil, port=nil, opts={})
-      @host_to_try = format_pair(host, port)
+      if host.nil? and ENV.has_key?('MONGODB_URI')
+        parser = URIParser.new ENV['MONGODB_URI'], opts
+        if parser.replicaset?
+          raise MongoArgumentError, "Mongo::Connection.new called with no arguments, but ENV['MONGODB_URI'] implies a replica set."
+        end
+        opts = parser.connection_options
+        @host_to_try = [parser.host, parser.port]
+      elsif host.is_a?(String)
+        @host_to_try = [host, (port || DEFAULT_PORT).to_i]
+      else
+        @host_to_try = [DEFAULT_HOST, DEFAULT_PORT]
+      end
 
       # Host and port of current master.
       @host = @port = nil
       
-      # slave_ok can be true only if one node is specified
+      # Default maximum BSON object size
-      @slave_ok = opts[:slave_ok]
+      @max_bson_size = Mongo::DEFAULT_MAX_BSON_SIZE
       
+      # Lock for request ids.
+      @id_lock = Mutex.new
+      
+      # Connection pool for primay node
+      @primary      = nil
+      @primary_pool = nil
+
+      check_opts(opts)
       setup(opts)
     end
 
@@ -115,23 +147,24 @@ module Mongo
     #   to send reads to.
     #
     # @example
-    #   Connection.multi([["db1.example.com", 27017], ["db2.example.com", 27017]])
+    #   Mongo::Connection.multi([["db1.example.com", 27017], ["db2.example.com", 27017]])
     #
     # @example This connection will read from a random secondary node.
-    #   Connection.multi([["db1.example.com", 27017], ["db2.example.com", 27017], ["db3.example.com", 27017]],
+    #   Mongo::Connection.multi([["db1.example.com", 27017], ["db2.example.com", 27017], ["db3.example.com", 27017]],
     #                   :read_secondary => true)
     #
     # @return [Mongo::Connection]
     #
     # @deprecated
     def self.multi(nodes, opts={})
-      warn "Connection.multi is now deprecated. Please use ReplSetConnection.new instead."
+      warn "Connection.multi is now deprecated and will be removed in v2.0. Please use ReplSetConnection.new instead."
 
-      nodes << opts
+      ReplSetConnection.new(*(nodes+[opts]))
-      ReplSetConnection.new(*nodes)
     end
 
-    # Initialize a connection to MongoDB using the MongoDB URI spec:
+    # Initialize a connection to MongoDB using the MongoDB URI spec.
+    #
+    # Since Connection.new cannot be used with any <code>ENV["MONGODB_URI"]</code> that has multiple hosts (implying a replicaset), you may use this when the type of your connection varies by environment and should be determined solely from <code>ENV["MONGODB_URI"]</code>.
     #
     # @param uri [String]
     #   A string of the format mongodb://[username:password@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/database]
@@ -139,21 +172,23 @@ module Mongo
     # @param opts Any of the options available for Connection.new
     #
     # @return [Mongo::Connection, Mongo::ReplSetConnection]
-    def self.from_uri(string, extra_opts={})
+    def self.from_uri(uri = ENV['MONGODB_URI'], extra_opts={})
-      uri = URIParser.new(string)
+      parser = URIParser.new uri, extra_opts
-      opts = uri.connection_options
+      parser.connection
-      opts.merge!(extra_opts)
+    end
 
-      if uri.nodes.length == 1
+    # The host name used for this connection.
-        opts.merge!({:auths => uri.auths})
+    #
-        Connection.new(uri.nodes[0][0], uri.nodes[0][1], opts)
+    # @return [String]
-      elsif uri.nodes.length > 1
+    def host
-        nodes = uri.nodes.clone
+      @primary_pool.host
-        nodes_with_opts = nodes << opts
+    end
-        ReplSetConnection.new(*nodes_with_opts)
+
-      else
+    # The port used for this connection.
-        raise MongoArgumentError, "No nodes specified. Please ensure that you've provided at least one node."
+    #
-      end
+    # @return [Integer]
+    def port
+      @primary_pool.port
     end
 
     # Fsync, then lock the mongod process against writes. Use this to get
@@ -188,10 +223,11 @@ module Mongo
     #
     # @raise [AuthenticationError] raises an exception if any one
     #   authentication fails.
-    def apply_saved_authentication
+    def apply_saved_authentication(opts={})
       return false if @auths.empty?
       @auths.each do |auth|
-        self[auth['db_name']].authenticate(auth['username'], auth['password'], false)
+        self[auth['db_name']].issue_authentication(auth['username'], auth['password'], false,
+          :socket => opts[:socket])
       end
       true
     end
@@ -241,6 +277,14 @@ module Mongo
       true
     end
 
+    def authenticate_pools
+      @primary_pool.authenticate_existing
+    end
+
+    def logout_pools(db)
+      @primary_pool.logout_existing(db)
+    end
+
     # Return a hash with all database names
     # and their respective sizes on disk.
     #
@@ -280,7 +324,7 @@ module Mongo
     #
     # @core databases []-instance_method
     def [](db_name)
-      DB.new(db_name, self, :safe => @safe)
+      DB.new(db_name, self)
     end
 
     # Drop a database.
@@ -298,7 +342,7 @@ module Mongo
     # @param [String] from_host host of the 'from' database.
     # @param [String] username username for authentication against from_db (>=1.3.x).
     # @param [String] password password for authentication against from_db (>=1.3.x).
-    def copy_database(from, to, from_host="localhost", username=nil, password=nil)
+    def copy_database(from, to, from_host=DEFAULT_HOST, username=nil, password=nil)
       oh = BSON::OrderedHash.new
       oh[:copydb]   = 1
       oh[:fromhost] = from_host
@@ -319,13 +363,22 @@ module Mongo
       self["admin"].command(oh)
     end
 
-        # Get the build information for the current connection.
+    # Checks if a server is alive. This command will return immediately
+    # even if the server is in a lock.
+    #
+    # @return [Hash]
+    def ping
+      self["admin"].command({:ping => 1})
+    end
+
+    # Get the build information for the current connection.
     #
     # @return [Hash]
     def server_info
       self["admin"].command({:buildinfo => 1})
     end
 
+
     # Get the build version of the current server.
     #
     # @return [Mongo::ServerVersion]
@@ -341,89 +394,6 @@ module Mongo
       @slave_ok
     end
 
-    # Send a message to MongoDB, adding the necessary headers.
-    #
-    # @param [Integer] operation a MongoDB opcode.
-    # @param [BSON::ByteBuffer] message a message to send to the database.
-    #
-    # @return [Integer] number of bytes sent
-    def send_message(operation, message, log_message=nil)
-      begin
-        add_message_headers(message, operation)
-        packed_message = message.to_s
-        socket = checkout_writer
-        send_message_on_socket(packed_message, socket)
-      ensure
-        checkin_writer(socket)
-      end
-    end
-
-    # Sends a message to the database, waits for a response, and raises
-    # an exception if the operation has failed.
-    #
-    # @param [Integer] operation a MongoDB opcode.
-    # @param [BSON::ByteBuffer] message a message to send to the database.
-    # @param [String] db_name the name of the database. used on call to get_last_error.
-    # @param [Hash] last_error_params parameters to be sent to getLastError. See DB#error for
-    #   available options.
-    #
-    # @see DB#get_last_error for valid last error params.
-    #
-    # @return [Hash] The document returned by the call to getlasterror.
-    def send_message_with_safe_check(operation, message, db_name, log_message=nil, last_error_params=false)
-      docs = num_received = cursor_id = ''
-      add_message_headers(message, operation)
-
-      last_error_message = BSON::ByteBuffer.new
-      build_last_error_message(last_error_message, db_name, last_error_params)
-      last_error_id = add_message_headers(last_error_message, Mongo::Constants::OP_QUERY)
-
-      packed_message = message.append!(last_error_message).to_s
-      begin
-        sock = checkout_writer
-        @safe_mutexes[sock].synchronize do
-          send_message_on_socket(packed_message, sock)
-          docs, num_received, cursor_id = receive(sock, last_error_id)
-        end
-      ensure
-        checkin_writer(sock)
-      end
-
-      if num_received == 1 && (error = docs[0]['err'] || docs[0]['errmsg'])
-        close if error == "not master"
-        error = "wtimeout" if error == "timeout"
-        raise Mongo::OperationFailure, docs[0]['code'].to_s + ': ' + error
-      end
-
-      docs[0]
-    end
-
-    # Sends a message to the database and waits for the response.
-    #
-    # @param [Integer] operation a MongoDB opcode.
-    # @param [BSON::ByteBuffer] message a message to send to the database.
-    # @param [Socket] socket a socket to use in lieu of checking out a new one.
-    #
-    # @return [Array]
-    #   An array whose indexes include [0] documents returned, [1] number of document received,
-    #   and [3] a cursor_id.
-    def receive_message(operation, message, log_message=nil, socket=nil, command=false)
-      request_id = add_message_headers(message, operation)
-      packed_message = message.to_s
-      begin
-        sock = socket || (command ? checkout_writer : checkout_reader)
-
-        result = ''
-        @safe_mutexes[sock].synchronize do
-          send_message_on_socket(packed_message, sock)
-          result = receive(sock, request_id)
-        end
-      ensure
-        command ? checkin_writer(sock) : checkin_reader(sock)
-      end
-      result
-    end
-
     # Create a new socket and attempt to connect to master.
     # If successful, sets host and port to master and returns the socket.
     #
@@ -432,7 +402,7 @@ module Mongo
     #
     # @raise [ConnectionFailure] if unable to connect to any host or port.
     def connect
-      reset_connection
+      close
 
       config = check_is_master(@host_to_try)
       if config
@@ -442,25 +412,37 @@ module Mongo
           @read_primary = false
         end
 
+        @max_bson_size = config['maxBsonObjectSize'] || Mongo::DEFAULT_MAX_BSON_SIZE
         set_primary(@host_to_try)
       end
 
-      if connected?
+      if !connected?
-        BSON::BSON_CODER.update_max_bson_size(self)
-      else
         raise ConnectionFailure, "Failed to connect to a master node at #{@host_to_try[0]}:#{@host_to_try[1]}"
       end
     end
-
+    alias :reconnect :connect
-    def connecting?
-      @nodes_to_try.length > 0
-    end
 
     # It's possible that we defined connected as all nodes being connected???
     # NOTE: Do check if this needs to be more stringent.
     # Probably not since if any node raises a connection failure, all nodes will be closed.
     def connected?
-      @primary_pool && @primary_pool.host && @primary_pool.port
+      @primary_pool && !@primary_pool.closed?
+    end
+
+    # Determine if the connection is active. In a normal case the *server_info* operation
+    # will be performed without issues, but if the connection was dropped by the server or
+    # for some reason the sockets are unsynchronized, a ConnectionFailure will be raised and
+    # the return will be false.
+    #
+    # @return [Boolean]
+    def active?
+      return false unless connected?
+
+      ping
+      true
+
+      rescue ConnectionFailure
+      false
     end
 
     # Determine whether we're reading from a primary node. If false,
@@ -470,11 +452,29 @@ module Mongo
     def read_primary?
       @read_primary
     end
+    alias :primary? :read_primary?
+
+    # The socket pool that this connection reads from.
+    #
+    # @return [Mongo::Pool]
+    def read_pool
+      @primary_pool
+    end
+
+    # The value of the read preference.
+    def read_preference
+      if slave_ok?
+        :secondary
+      else
+        :primary
+      end
+    end
 
     # Close the connection to the database.
     def close
       @primary_pool.close if @primary_pool
       @primary_pool = nil
+      @primary = nil
     end
 
     # Returns the maximum BSON object size as returned by the core server.
@@ -482,8 +482,13 @@ module Mongo
     #
     # @return [Integer]
     def max_bson_size
-      config = self['admin'].command({:ismaster => 1})
+      @max_bson_size
-      config['maxBsonObjectSize'] || Mongo::DEFAULT_MAX_BSON_SIZE
+    end
+
+    # Prefer primary pool but fall back to secondary
+    def checkout_best
+      connect unless connected?
+      @primary_pool.checkout
     end
 
     # Checkout a socket for reading (i.e., a secondary node).
@@ -503,69 +508,90 @@ module Mongo
     # Checkin a socket used for reading.
     # Note: this is overridden in ReplSetConnection.
     def checkin_reader(socket)
-      if @primary_pool
+      checkin(socket)
-        @primary_pool.checkin(socket)
-      end
     end
 
     # Checkin a socket used for writing.
     # Note: this is overridden in ReplSetConnection.
     def checkin_writer(socket)
-      if @primary_pool
+      checkin(socket)
-        @primary_pool.checkin(socket)
+    end
+
+    # Check a socket back into its pool.
+    def checkin(socket)
+      if @primary_pool && socket
+        socket.pool.checkin(socket)
+      end
+    end
+
+    # Excecutes block with the best available socket
+    def best_available_socket
+      socket = nil
+      begin
+        socket = checkout_best
+        yield socket
+      ensure
+        if socket
+          socket.pool.checkin(socket)
+        end
       end
     end
 
     protected
 
-    # Generic initialization code.
+    def valid_opts
+      GENERIC_OPTS + CONNECTION_OPTS
+    end
+
+    def check_opts(opts)
+      bad_opts = opts.keys.reject { |opt| valid_opts.include?(opt) }
+
+      unless bad_opts.empty?
+        bad_opts.each {|opt| warn "#{opt} is not a valid option for #{self.class}"}
+      end
+    end
+
+    # Parse option hash
     def setup(opts)
+      # slave_ok can be true only if one node is specified
+      @slave_ok = opts[:slave_ok]
+      
+      # Determine whether to use SSL.
+      @ssl = opts.fetch(:ssl, false)
+      if @ssl
+        @socket_class = Mongo::SSLSocket
+      else
+        @socket_class = Mongo::TCPSocket
+      end
+
       # Authentication objects
       @auths = opts.fetch(:auths, [])
 
-      # Lock for request ids.
-      @id_lock = Mutex.new
-
       # Pool size and timeout.
       @pool_size = opts[:pool_size] || 1
-      @timeout   = opts[:timeout]   || 5.0
+      if opts[:timeout]
+        warn "The :timeout option has been deprecated " +
+          "and will be removed in the 2.0 release. Use :pool_timeout instead."
+      end
+      @pool_timeout = opts[:pool_timeout] || opts[:timeout] || 5.0
 
-      # Mutex for synchronizing pool access
+      # Timeout on socket read operation.
-      @connection_mutex = Mutex.new
+      @op_timeout = opts[:op_timeout] || nil
+
+      # Timeout on socket connect.
+      @connect_timeout = opts[:connect_timeout] || nil
 
       # Global safe option. This is false by default.
       @safe = opts[:safe] || false
 
-      # Create a mutex when a new key, in this case a socket,
+      @logger = opts.fetch(:logger, nil)
-      # is added to the hash.
-      @safe_mutexes = Hash.new { |h, k| h[k] = Mutex.new }
 
-      # Condition variable for signal and wait
+      if @logger
-      @queue = ConditionVariable.new
+        write_logging_startup_message
+      end
 
-      # Connection pool for primay node
+      if opts.fetch(:connect, true)
-      @primary      = nil
+        connect
-      @primary_pool = nil
-
-      @logger   = opts[:logger] || nil
-
-      should_connect = opts.fetch(:connect, true)
-      connect if should_connect
-    end
-
-    ## Configuration helper methods
-
-    # Returns a host-port pair.
-    #
-    # @return [Array]
-    #
-    # @private
-    def format_pair(host, port)
-      case host
-        when String
-          [host, port ? port.to_i : DEFAULT_PORT]
-        when nil
-          ['localhost', DEFAULT_PORT]
       end
     end
 
@@ -578,205 +604,32 @@ module Mongo
     # TODO: evaluate whether this method is actually necessary
     def reset_connection
       close
-      @primary = nil
     end
 
     def check_is_master(node)
       begin
         host, port = *node
-        socket = TCPSocket.new(host, port)
+        socket = nil
-        socket.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
+        config = nil
 
-        config = self['admin'].command({:ismaster => 1}, :sock => socket)
+        socket = @socket_class.new(host, port, @op_timeout, @connect_timeout) 
-      rescue OperationFailure, SocketError, SystemCallError, IOError => ex
+        config = self['admin'].command({:ismaster => 1}, :socket => socket)
+      rescue OperationFailure, SocketError, SystemCallError, IOError
         close
       ensure
-        socket.close if socket
+        if socket
+          socket.close unless socket.closed?
+        end
       end
 
       config
     end
 
-    # Set the specified node as primary, and
+    # Set the specified node as primary.
-    # apply any saved authentication credentials.
     def set_primary(node)
       host, port = *node
       @primary = [host, port]
-      @primary_pool = Pool.new(self, host, port, :size => @pool_size, :timeout => @timeout)
+      @primary_pool = Pool.new(self, host, port, :size => @pool_size, :timeout => @pool_timeout)
-      apply_saved_authentication
-    end
-
-
-    ## Low-level connection methods.
-
-    def receive(sock, expected_response)
-      begin
-      receive_header(sock, expected_response)
-      number_received, cursor_id = receive_response_header(sock)
-      read_documents(number_received, cursor_id, sock)
-      rescue Mongo::ConnectionFailure => ex
-        close
-        raise ex
-      end
-    end
-
-    def receive_header(sock, expected_response)
-      header = receive_message_on_socket(16, sock)
-      size, request_id, response_to = header.unpack('VVV')
-      if expected_response != response_to
-        raise Mongo::ConnectionFailure, "Expected response #{expected_response} but got #{response_to}"
-      end
-
-      unless header.size == STANDARD_HEADER_SIZE
-        raise "Short read for DB response header: " +
-          "expected #{STANDARD_HEADER_SIZE} bytes, saw #{header.size}"
-      end
-      nil
-    end
-
-    def receive_response_header(sock)
-      header_buf = receive_message_on_socket(RESPONSE_HEADER_SIZE, sock)
-      if header_buf.length != RESPONSE_HEADER_SIZE
-        raise "Short read for DB response header; " +
-          "expected #{RESPONSE_HEADER_SIZE} bytes, saw #{header_buf.length}"
-      end
-      flags, cursor_id_a, cursor_id_b, starting_from, number_remaining = header_buf.unpack('VVVVV')
-      check_response_flags(flags)
-      cursor_id = (cursor_id_b << 32) + cursor_id_a
-      [number_remaining, cursor_id]
-    end
-
-    def check_response_flags(flags)
-      if flags & Mongo::Constants::REPLY_CURSOR_NOT_FOUND != 0
-        raise Mongo::OperationFailure, "Query response returned CURSOR_NOT_FOUND. " +
-          "Either an invalid cursor was specified, or the cursor may have timed out on the server."
-      elsif flags & Mongo::Constants::REPLY_QUERY_FAILURE != 0
-        # Getting odd failures when a exception is raised here.
-      end
-    end
-
-    def read_documents(number_received, cursor_id, sock)
-      docs = []
-      number_remaining = number_received
-      while number_remaining > 0 do
-        buf = receive_message_on_socket(4, sock)
-        size = buf.unpack('V')[0]
-        buf << receive_message_on_socket(size - 4, sock)
-        number_remaining -= 1
-        docs << BSON::BSON_CODER.deserialize(buf)
-      end
-      [docs, number_received, cursor_id]
-    end
-
-    # Constructs a getlasterror message. This method is used exclusively by
-    # Connection#send_message_with_safe_check.
-    #
-    # Because it modifies message by reference, we don't need to return it.
-    def build_last_error_message(message, db_name, opts)
-      message.put_int(0)
-      BSON::BSON_RUBY.serialize_cstr(message, "#{db_name}.$cmd")
-      message.put_int(0)
-      message.put_int(-1)
-      cmd = BSON::OrderedHash.new
-      cmd[:getlasterror] = 1
-      if opts.is_a?(Hash)
-        opts.assert_valid_keys(:w, :wtimeout, :fsync)
-        cmd.merge!(opts)
-      end
-      message.put_binary(BSON::BSON_CODER.serialize(cmd, false).to_s)
-      nil
-    end
-
-    # Prepares a message for transmission to MongoDB by
-    # constructing a valid message header.
-    #
-    # Note: this method modifies message by reference.
-    #
-    # @return [Integer] the request id used in the header
-    def add_message_headers(message, operation)
-      headers = [
-        # Message size.
-        16 + message.size,
-
-        # Unique request id.
-        request_id = get_request_id,
-
-        # Response id.
-        0,
-
-        # Opcode.
-        operation
-      ].pack('VVVV')
-
-      message.prepend!(headers)
-
-      request_id
-    end
-
-    # Increment and return the next available request id.
-    #
-    # return [Integer]
-    def get_request_id
-      request_id = ''
-      @id_lock.synchronize do
-        request_id = @@current_request_id += 1
-      end
-      request_id
-    end
-
-    # Low-level method for sending a message on a socket.
-    # Requires a packed message and an available socket,
-    #
-    # @return [Integer] number of bytes sent
-    def send_message_on_socket(packed_message, socket)
-      begin
-      total_bytes_sent = socket.send(packed_message, 0)
-      if total_bytes_sent != packed_message.size
-        packed_message.slice!(0, total_bytes_sent)
-        while packed_message.size > 0
-          byte_sent = socket.send(packed_message, 0)
-          total_bytes_sent += byte_sent
-          packed_message.slice!(0, byte_sent)
-        end
-      end
-      total_bytes_sent
-      rescue => ex
-        close
-        raise ConnectionFailure, "Operation failed with the following exception: #{ex}"
-      end
-    end
-
-    # Low-level method for receiving data from socket.
-    # Requires length and an available socket.
-    def receive_message_on_socket(length, socket)
-      begin
-        message = socket.read(length)
-        raise ConnectionFailure, "connection closed" unless message.length > 0
-        if message.length < length
-          chunk = new_binary_string
-          while message.length < length
-            socket.read(length - message.length, chunk)
-            raise ConnectionFailure, "connection closed" unless chunk.length > 0
-            message << chunk
-          end
-        end
-        rescue => ex
-          close
-          raise ConnectionFailure, "Operation failed with the following exception: #{ex}"
-      end
-      message
-    end
-
-    if defined?(Encoding)
-      BINARY_ENCODING = Encoding.find("binary")
-
-      def new_binary_string
-        "".force_encoding(BINARY_ENCODING)
-      end
-    else
-      def new_binary_string
-        ""
-      end
     end
   end
 end

lib/mongo/cursor.rb

@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -18,12 +18,15 @@ module Mongo
 
   # A cursor over query results. Returned objects are hashes.
   class Cursor
-    include Mongo::Conversions
     include Enumerable
+    include Mongo::Constants
+    include Mongo::Conversions
+    include Mongo::Logging
 
     attr_reader :collection, :selector, :fields,
       :order, :hint, :snapshot, :timeout,
-      :full_collection_name
+      :full_collection_name, :transformer,
+      :options, :cursor_id, :show_disk_loc
 
     # Create a new cursor.
     #
@@ -34,42 +37,97 @@ module Mongo
     #
     # @core cursors constructor_details
     def initialize(collection, opts={})
+      @cursor_id  = nil
+
       @db         = collection.db
       @collection = collection
       @connection = @db.connection
       @logger     = @connection.logger
 
+      # Query selector
       @selector   = opts[:selector] || {}
+
+      # Special operators that form part of $query
+      @order      = opts[:order]
+      @explain    = opts[:explain]
+      @hint       = opts[:hint]
+      @snapshot   = opts[:snapshot]
+      @max_scan   = opts.fetch(:max_scan, nil)
+      @return_key = opts.fetch(:return_key, nil)
+      @show_disk_loc = opts.fetch(:show_disk_loc, nil)
+
+      # Wire-protocol settings
       @fields     = convert_fields_for_query(opts[:fields])
       @skip       = opts[:skip]     || 0
       @limit      = opts[:limit]    || 0
-      @order      = opts[:order]
-      @hint       = opts[:hint]
-      @snapshot   = opts[:snapshot]
-      @timeout    = opts.fetch(:timeout, true)
-      @explain    = opts[:explain]
-      @socket     = opts[:socket]
       @tailable   = opts[:tailable] || false
+      @timeout    = opts.fetch(:timeout, true)
+      @options    = 0
+
+      # Use this socket for the query
+      @socket     = opts[:socket]
+
       @closed       = false
       @query_run    = false
+
+      @transformer = opts[:transformer]
+      if value = opts[:read]
+        Mongo::Support.validate_read_preference(value)
+      else
+        value = collection.read_preference
+      end
+      @read_preference = value.is_a?(Hash) ? value.dup : value
       batch_size(opts[:batch_size] || 0)
 
       @full_collection_name = "#{@collection.db.name}.#{@collection.name}"
       @cache        = []
       @returned     = 0
 
+      if(!@timeout)
+        add_option(OP_QUERY_NO_CURSOR_TIMEOUT)
+      end
+      if(@read_preference != :primary)
+        add_option(OP_QUERY_SLAVE_OK)
+      end
+      if(@tailable)
+        add_option(OP_QUERY_TAILABLE)
+      end
+
       if @collection.name =~ /^\$cmd/ || @collection.name =~ /^system/
         @command = true
       else
         @command = false
       end
+
+      @checkin_read_pool = false
+      @checkin_connection = false
+      @read_pool = nil
+    end
+
+    # Guess whether the cursor is alive on the server.
+    #
+    # Note that this method only checks whether we have
+    # a cursor id. The cursor may still have timed out
+    # on the server. This will be indicated in the next
+    # call to Cursor#next.
+    #
+    # @return [Boolean]
+    def alive?
+      @cursor_id && @cursor_id != 0
     end
 
     # Get the next document specified the cursor options.
     #
     # @return [Hash, Nil] the next document or Nil if no documents remain.
-    def next_document
+    def next
-      refresh if @cache.length == 0
+      if @cache.length == 0
+        if @query_run && (@options & OP_QUERY_EXHAUST != 0)
+          close
+          return nil
+        else
+          refresh
+        end
+      end
       doc = @cache.shift
 
       if doc && doc['$err']
@@ -78,16 +136,21 @@ module Mongo
         # If the server has stopped being the master (e.g., it's one of a
         # pair but it has died or something like that) then we close that
         # connection. The next request will re-open on master server.
-        if err == "not master"
+        if err.include?("not master")
           @connection.close
-          raise ConnectionFailure, err
+          raise ConnectionFailure.new(err, doc['code'], doc)
         end
 
-        raise OperationFailure, err
+        raise OperationFailure.new(err, doc['code'], doc)
       end
 
-      doc
+      if @transformer.nil?
+        doc
+      else
+        @transformer.call(doc) if doc
+      end
     end
+    alias :next_document :next
 
     # Reset this cursor on the server. Cursor options, such as the
     # query string and the values for skip and limit, are preserved.
@@ -128,7 +191,7 @@ module Mongo
       response = @db.command(command)
       return response['n'].to_i if Mongo::Support.ok?(response)
       return 0 if response['errmsg'] == "ns missing"
-      raise OperationFailure, "Count failed: #{response['errmsg']}"
+      raise OperationFailure.new("Count failed: #{response['errmsg']}", response['code'], response)
     end
 
     # Sort this cursor's results.
@@ -196,16 +259,20 @@ module Mongo
     # Note that the batch size will take effect only on queries
     # where the number to be returned is greater than 100.
     # 
+    # This can not override MongoDB's limit on the amount of data it will
+    # return to the client. Depending on server version this can be 4-16mb.
+    #
     # @param [Integer] size either 0 or some integer greater than 1. If 0,
     #   the server will determine the batch size.
     #
     # @return [Cursor]
-    def batch_size(size=0)
+    def batch_size(size=nil)
+      return @batch_size unless size
       check_modifiable
       if size < 0 || size == 1
         raise ArgumentError, "Invalid value for batch_size #{size}; must be 0 or > 1."
       else
-        @batch_size = size > @limit ? @limit : size
+        @batch_size = @limit != 0 && size > @limit ? @limit : size
       end
 
       self
@@ -223,11 +290,8 @@ module Mongo
     #     puts doc['user']
     #   end
     def each
-      #num_returned = 0
+      while doc = self.next
-      #while has_next? && (@limit <= 0 || num_returned < @limit)
+        yield doc
-      while doc = next_document
-        yield doc #next_document
-        #num_returned += 1
       end
     end
 
@@ -253,7 +317,8 @@ module Mongo
     #
     # @core explain explain-instance_method
     def explain
-      c = Cursor.new(@collection, query_options_hash.merge(:limit => -@limit.abs, :explain => true))
+      c = Cursor.new(@collection,
+        query_options_hash.merge(:limit => -@limit.abs, :explain => true))
       explanation = c.next_document
       c.close
 
@@ -275,8 +340,8 @@ module Mongo
         message = BSON::ByteBuffer.new([0, 0, 0, 0])
         message.put_int(1)
         message.put_long(@cursor_id)
-        @logger.debug("MONGODB cursor.close #{@cursor_id}") if @logger
+        log(:debug, "Cursor#close #{@cursor_id}")
-        @connection.send_message(Mongo::Constants::OP_KILL_CURSORS, message, nil)
+        @connection.send_message(Mongo::Constants::OP_KILL_CURSORS, message, :connection => :reader)
       end
       @cursor_id = 0
       @closed    = true
@@ -285,7 +350,9 @@ module Mongo
     # Is this cursor closed?
     #
     # @return [Boolean]
-    def closed?; @closed; end
+    def closed?
+      @closed
+    end
 
     # Returns an integer indicating which query options have been selected.
     #
@@ -294,11 +361,43 @@ module Mongo
     # @see http://www.mongodb.org/display/DOCS/Mongo+Wire+Protocol#MongoWireProtocol-Mongo::Constants::OPQUERY
     # The MongoDB wire protocol.
     def query_opts
-      opts     = 0
+      warn "The method Cursor#query_opts has been deprecated " +
-      opts    |= Mongo::Constants::OP_QUERY_NO_CURSOR_TIMEOUT unless @timeout
+        "and will removed in v2.0. Use Cursor#options instead."
-      opts    |= Mongo::Constants::OP_QUERY_SLAVE_OK if @connection.slave_ok?
+      @options
-      opts    |= Mongo::Constants::OP_QUERY_TAILABLE if @tailable
+    end
-      opts
+
+    # Add an option to the query options bitfield.
+    #
+    # @param opt a valid query option
+    #
+    # @raise InvalidOperation if this method is run after the cursor has bee
+    #   iterated for the first time.
+    #
+    # @return [Integer] the current value of the options bitfield for this cursor.
+    #
+    # @see http://www.mongodb.org/display/DOCS/Mongo+Wire+Protocol#MongoWireProtocol-Mongo::Constants::OPQUERY
+    def add_option(opt)
+      check_modifiable
+
+      @options |= opt
+      @options
+    end
+
+    # Remove an option from the query options bitfield.
+    #
+    # @param opt a valid query option
+    #
+    # @raise InvalidOperation if this method is run after the cursor has bee
+    #   iterated for the first time.
+    #
+    # @return [Integer] the current value of the options bitfield for this cursor.
+    #
+    # @see http://www.mongodb.org/display/DOCS/Mongo+Wire+Protocol#MongoWireProtocol-Mongo::Constants::OPQUERY
+    def remove_option(opt)
+      check_modifiable
+
+      @options &= ~opt
+      @options
     end
 
     # Get the query options for this Cursor.
@@ -307,18 +406,21 @@ module Mongo
     def query_options_hash
       { :selector => @selector,
         :fields   => @fields,
-        :skip     => @skip_num,
+        :skip     => @skip,
-        :limit    => @limit_num,
+        :limit    => @limit,
         :order    => @order,
         :hint     => @hint,
         :snapshot => @snapshot,
-        :timeout  => @timeout }
+        :timeout  => @timeout,
+        :max_scan => @max_scan,
+        :return_key => @return_key,
+        :show_disk_loc => @show_disk_loc }
     end
 
     # Clean output for inspect.
     def inspect
       "<Mongo::Cursor:0x#{object_id.to_s(16)} namespace='#{@db.name}.#{@collection.name}' " +
-        "@selector=#{@selector.inspect}>"
+        "@selector=#{@selector.inspect} @cursor_id=#{@cursor_id}>"
     end
 
     private
@@ -340,12 +442,49 @@ module Mongo
 
     # Return the number of documents remaining for this cursor.
     def num_remaining
-      refresh if @cache.length == 0
+      if @cache.length == 0
+        if @query_run && (@options & OP_QUERY_EXHAUST != 0)
+          close
+          return 0
+        else
+          refresh
+        end
+      end
+
       @cache.length
     end
 
+    # Refresh the documents in @cache. This means either
+    # sending the initial query or sending a GET_MORE operation.
     def refresh
-      return if send_initial_query || @cursor_id.zero?
+      if !@query_run
+        send_initial_query
+      elsif !@cursor_id.zero?
+        send_get_more
+      end
+    end
+
+    def send_initial_query
+      message = construct_query_message
+      sock    = @socket || checkout_socket_from_connection
+      instrument(:find, instrument_payload) do
+        begin
+        results, @n_received, @cursor_id = @connection.receive_message(
+          Mongo::Constants::OP_QUERY, message, nil, sock, @command,
+          nil, @options & OP_QUERY_EXHAUST != 0)
+        rescue ConnectionFailure, OperationFailure, OperationTimeout => ex
+          force_checkin_socket(sock) unless @socket
+          raise ex
+        end
+        checkin_socket(sock) unless @socket
+        @returned += @n_received
+        @cache += results
+        @query_run = true
+        close_cursor_if_query_complete
+      end
+    end
+
+    def send_get_more
       message = BSON::ByteBuffer.new([0, 0, 0, 0])
 
       # DB name.
@@ -364,34 +503,103 @@ module Mongo
 
       # Cursor id.
       message.put_long(@cursor_id)
-      @logger.debug("MONGODB cursor.refresh() for cursor #{@cursor_id}") if @logger
+      log(:debug, "cursor.refresh() for cursor #{@cursor_id}") if @logger
+      sock = @socket || checkout_socket_for_op_get_more
+
+      begin
       results, @n_received, @cursor_id = @connection.receive_message(
-          Mongo::Constants::OP_GET_MORE, message, nil, @socket, @command)
+        Mongo::Constants::OP_GET_MORE, message, nil, sock, @command, nil)
+      rescue ConnectionFailure, OperationFailure, OperationTimeout => ex
+        force_checkin_socket(sock)
+        raise ex
+      end
+      checkin_socket(sock) unless @socket
       @returned += @n_received
       @cache += results
       close_cursor_if_query_complete
     end
 
-    # Run query the first time we request an object from the wire
+    def checkout_socket_from_connection
-    def send_initial_query
+      socket = nil
-      if @query_run
+      begin
-        false
+        @checkin_connection = true
+        if @command || @read_preference == :primary
+          socket = @connection.checkout_writer
+        elsif @read_preference == :secondary_only
+          socket = @connection.checkout_secondary
+        else
+          @read_pool = @connection.read_pool
+          socket = @connection.checkout_reader
+        end
+      rescue SystemStackError, NoMemoryError, SystemCallError => ex
+        @connection.close
+        raise ex
+      end
+
+      socket
+    end
+
+    def checkout_socket_for_op_get_more
+      if @read_pool && (@read_pool != @connection.read_pool)
+        checkout_socket_from_read_pool
       else
-        message = construct_query_message
+        checkout_socket_from_connection
-        @logger.debug query_log_message if @logger
+      end
-        results, @n_received, @cursor_id = @connection.receive_message(
+    end
-          Mongo::Constants::OP_QUERY, message, nil, @socket, @command)
+
-        @returned += @n_received
+    def checkout_socket_from_read_pool
-        @cache += results
+      new_pool = @connection.secondary_pools.detect do |pool|
-        @query_run = true
+        pool.host == @read_pool.host && pool.port == @read_pool.port
-        close_cursor_if_query_complete
+      end
-        true
+      if new_pool
+        sock = nil
+        begin
+          @read_pool = new_pool
+          sock = new_pool.checkout
+          @checkin_read_pool = true
+        rescue SystemStackError, NoMemoryError, SystemCallError => ex
+          @connection.close
+          raise ex
+        end
+        return sock
+      else
+        raise Mongo::OperationFailure, "Failure to continue iterating " +
+          "cursor because the the replica set member persisting this " +
+          "cursor at #{@read_pool.host_string} cannot be found."
+      end
+    end
+
+    def checkin_socket(sock)
+      if @checkin_read_pool
+        @read_pool.checkin(sock)
+        @checkin_read_pool = false
+      elsif @checkin_connection
+        if @command || @read_preference == :primary
+          @connection.checkin_writer(sock)
+        else
+          @connection.checkin_reader(sock)
+        end
+        @checkin_connection = false
+      end
+    end
+
+    def force_checkin_socket(sock)
+      if @checkin_read_pool
+        @read_pool.checkin(sock)
+        @checkin_read_pool = false
+      else
+        if @command || @read_preference == :primary
+          @connection.checkin_writer(sock)
+        else
+          @connection.checkin_reader(sock)
+        end
+        @checkin_connection = false
       end
     end
 
     def construct_query_message
       message = BSON::ByteBuffer.new
-      message.put_int(query_opts)
+      message.put_int(@options)
       BSON::BSON_RUBY.serialize_cstr(message, "#{@db.name}.#{@collection.name}")
       message.put_int(@skip)
       message.put_int(@limit)
@@ -401,10 +609,13 @@ module Mongo
       message
     end
 
-    def query_log_message
+    def instrument_payload
-      "#{@db.name}['#{@collection.name}'].find(#{@selector.inspect}, #{@fields ? @fields.inspect : '{}'})" +
+      log = { :database => @db.name, :collection => @collection.name, :selector => selector }
-      "#{@skip != 0 ? ('.skip(' + @skip.to_s + ')') : ''}#{@limit != 0 ? ('.limit(' + @limit.to_s + ')') : ''}" +
+      log[:fields] = @fields if @fields
-      "#{@order ? ('.sort(' + @order.inspect + ')') : ''}"
+      log[:skip]   = @skip   if @skip && (@skip != 0)
+      log[:limit]  = @limit  if @limit && (@limit != 0)
+      log[:order]  = @order  if @order
+      log
     end
 
     def construct_query_spec
@@ -415,16 +626,16 @@ module Mongo
       spec['$hint']     = @hint if @hint && @hint.length > 0
       spec['$explain']  = true if @explain
       spec['$snapshot'] = true if @snapshot
+      spec['$maxScan']  = @max_scan if @max_scan
+      spec['$returnKey']   = true if @return_key
+      spec['$showDiskLoc'] = true if @show_disk_loc
       spec
     end
 
     # Returns true if the query contains order, explain, hint, or snapshot.
     def query_contains_special_fields?
-      @order || @explain || @hint || @snapshot
+      @order || @explain || @hint || @snapshot || @show_disk_loc ||
-    end
+        @max_scan || @return_key
-
-    def to_s
-      "DBResponse(flags=#@result_flags, cursor_id=#@cursor_id, start=#@starting_from)"
     end
 
     def close_cursor_if_query_complete

lib/mongo/db.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,7 +17,6 @@
 # ++
 
 require 'socket'
-require 'timeout'
 require 'thread'
 
 module Mongo
@@ -63,13 +62,13 @@ module Mongo
     # @option opts [Boolean] :strict (False) If true, collections must exist to be accessed and must
     #   not exist to be created. See DB#collection and DB#create_collection.
     #
-    # @option opts [Object, #create_pk(doc)] :pk (Mongo::ObjectId) A primary key factory object,
+    # @option opts [Object, #create_pk(doc)] :pk (BSON::ObjectId) A primary key factory object,
     #   which should take a hash and return a hash which merges the original hash with any primary key
     #   fields the factory wishes to inject. (NOTE: if the object already has a primary key,
     #   the factory should not inject a new key).
     #
     # @option opts [Boolean, Hash] :safe (false) Set the default safe-mode options
-    #   propogated to Collection objects instantiated off of this DB. If no
+    #   propagated to Collection objects instantiated off of this DB. If no
     #   value is provided, the default value set on this instance's Connection object will be used. This
     #   default can be overridden upon instantiation of any collection by explicity setting a :safe value
     #   on initialization
@@ -82,6 +81,12 @@ module Mongo
       @strict     = opts[:strict]
       @pk_factory = opts[:pk]
       @safe       = opts.fetch(:safe, @connection.safe)
+      if value = opts[:read]
+        Mongo::Support.validate_read_preference(value)
+      else
+        value = @connection.read_preference
+      end
+      @read_preference = value.is_a?(Hash) ? value.dup : value
       @cache_time = opts[:cache_time] || 300 #5 minutes.
     end
 
@@ -92,7 +97,8 @@ module Mongo
     # @param [String] password
     # @param [Boolean] save_auth
     #   Save this authentication to the connection object using Connection#add_auth. This
-    #   will ensure that the authentication will be applied on database reconnect.
+    #   will ensure that the authentication will be applied on database reconnect. Note
+    #   that this value must be true when using connection pooling.
     #
     # @return [Boolean]
     #
@@ -100,8 +106,22 @@ module Mongo
     #
     # @core authenticate authenticate-instance_method
     def authenticate(username, password, save_auth=true)
-      doc = command({:getnonce => 1}, :check_response => false)
+      if @connection.pool_size > 1
-      raise "error retrieving nonce: #{doc}" unless ok?(doc)
+        if !save_auth
+          raise MongoArgumentError, "If using connection pooling, :save_auth must be set to true."
+        end
+      end
+
+      @connection.best_available_socket do |socket|
+        issue_authentication(username, password, save_auth, :socket => socket)
+      end
+
+      @connection.authenticate_pools
+    end
+
+    def issue_authentication(username, password, save_auth=true, opts={})
+      doc = command({:getnonce => 1}, :check_response => false, :socket => opts[:socket])
+      raise MongoDBError, "Error retrieving nonce: #{doc}" unless ok?(doc)
       nonce = doc['nonce']
 
       auth = BSON::OrderedHash.new
@@ -109,13 +129,14 @@ module Mongo
       auth['user'] = username
       auth['nonce'] = nonce
       auth['key'] = Mongo::Support.auth_key(username, password, nonce)
-      if ok?(self.command(auth, :check_response => false))
+      if ok?(doc = self.command(auth, :check_response => false, :socket => opts[:socket]))
         if save_auth
           @connection.add_auth(@name, username, password)
         end
         true
       else
-        raise(Mongo::AuthenticationError, "Failed to authenticate user '#{username}' on db '#{self.name}'")
+        message = "Failed to authenticate user '#{username}' on db '#{self.name}'"
+        raise Mongo::AuthenticationError.new(message, doc['code'], doc)
       end
     end
 
@@ -154,12 +175,15 @@ module Mongo
     #
     # @param [String] username
     # @param [String] password
+    # @param [Boolean] read_only
+    #   Create a read-only user.
     #
     # @return [Hash] an object representing the user.
-    def add_user(username, password)
+    def add_user(username, password, read_only = false)
       users = self[SYSTEM_USER_COLLECTION]
       user  = users.find_one({:user => username}) || {:user => username}
       user['pwd'] = Mongo::Support.hash_password(username, password)
+      user['readOnly'] = true if read_only;
       users.save(user)
       return user
     end
@@ -179,14 +203,22 @@ module Mongo
     end
 
     # Deauthorizes use for this database for this connection. Also removes
-    # any saved authorization in the connection class associated with this
+    # any saved authentication in the connection class associated with this
     # database.
     #
     # @raise [MongoDBError] if logging out fails.
     #
     # @return [Boolean]
-    def logout
+    def logout(opts={})
-      doc = command(:logout => 1)
+      if @connection.pool_size > 1
+        @connection.logout_pools(@name)
+      end
+
+      issue_logout(opts)
+    end
+
+    def issue_logout(opts={})
+      doc = command({:logout => 1}, :socket => opts[:socket])
       if ok?(doc)
         @connection.remove_auth(@name)
         true
@@ -231,28 +263,31 @@ module Mongo
     # new collection. If +strict+ is true, will raise an error if
     # collection +name+ already exists.
     #
-    # @param [String] name the name of the new collection.
+    # @param [String, Symbol] name the name of the new collection.
     #
     # @option opts [Boolean] :capped (False) created a capped collection.
     #
-    # @option opts [Integer] :size (Nil) If +capped+ is +true+, specifies the maximum number of
+    # @option opts [Integer] :size (Nil) If +capped+ is +true+,
-    #   bytes for the capped collection. If +false+, specifies the number of bytes allocated
+    #   specifies the maximum number of bytes for the capped collection.
+    #   If +false+, specifies the number of bytes allocated
     #   for the initial extent of the collection.
     #
-    # @option opts [Integer] :max (Nil) If +capped+ is +true+, indicates the maximum number of records
+    # @option opts [Integer] :max (Nil) If +capped+ is +true+, indicates
-    #   in a capped collection.
+    #   the maximum number of records in a capped collection.
     #
-    # @raise [MongoDBError] raised under two conditions: either we're in +strict+ mode and the collection
+    # @raise [MongoDBError] raised under two conditions:
+    #   either we're in +strict+ mode and the collection
     #   already exists or collection creation fails on the server.
     #
     # @return [Mongo::Collection]
     def create_collection(name, opts={})
-      # Does the collection already exist?
+      name = name.to_s
       if collection_names.include?(name)
         if strict?
-          raise MongoDBError, "Collection #{name} already exists. Currently in strict mode."
+          raise MongoDBError, "Collection #{name} already exists. " +
+            "Currently in strict mode."
         else
-          return Collection.new(name, self)
+          return Collection.new(name, self, opts)
         end
       end
 
@@ -266,16 +301,19 @@ module Mongo
 
     # Get a collection by name.
     #
-    # @param [String] name the collection name.
+    # @param [String, Symbol] name the collection name.
-    # @param [Hash] opts any valid options that can me passed to Collection#new.
+    # @param [Hash] opts any valid options that can be passed to Collection#new.
     #
-    # @raise [MongoDBError] if collection does not already exist and we're in +strict+ mode.
+    # @raise [MongoDBError] if collection does not already exist and we're in
+    #   +strict+ mode.
     #
     # @return [Mongo::Collection]
     def collection(name, opts={})
-      if strict? && !collection_names.include?(name)
+      if strict? && !collection_names.include?(name.to_s)
-        raise Mongo::MongoDBError, "Collection #{name} doesn't exist. Currently in strict mode."
+        raise Mongo::MongoDBError, "Collection #{name} doesn't exist. " +
+          "Currently in strict mode."
       else
+        opts = opts.dup
         opts[:safe] = opts.fetch(:safe, @safe)
         opts.merge!(:pk => @pk_factory) unless opts[:pk]
         Collection.new(name, self, opts)
@@ -285,11 +323,11 @@ module Mongo
 
     # Drop a collection by +name+.
     #
-    # @param [String] name
+    # @param [String, Symbol] name
     #
     # @return [Boolean] +true+ on success or +false+ if the collection name doesn't exist.
     def drop_collection(name)
-      return true unless collection_names.include?(name)
+      return true unless collection_names.include?(name.to_s)
 
       ok?(command(:drop => name))
     end
@@ -299,6 +337,7 @@ module Mongo
     # @option opts [Boolean] :fsync (false)
     # @option opts [Integer] :w (nil)
     # @option opts [Integer] :wtimeout (nil)
+    # @option opts [Boolean] :j (false)
     #
     # @return [Hash] the entire response to getlasterror.
     #
@@ -399,7 +438,7 @@ module Mongo
     #
     # @return [True] returns +true+ on success.
     #
-    # @raise MongoDBError if there's an error renaming the collection.
+    # @raise MongoDBError if there's an error dropping the index.
     def drop_index(collection_name, index_name)
       oh = BSON::OrderedHash.new
       oh[:deleteIndexes] = collection_name
@@ -455,14 +494,14 @@ module Mongo
     #
     # @option opts [Boolean] :check_response (true) If +true+, raises an exception if the
     # command fails.
-    # @option opts [Socket] :sock a socket to use for sending the command. This is mainly for internal use.
+    # @option opts [Socket] :socket a socket to use for sending the command. This is mainly for internal use.
     #
     # @return [Hash]
     #
     # @core commands command_instance-method
     def command(selector, opts={})
       check_response = opts.fetch(:check_response, true)
-      sock           = opts[:sock]
+      socket         = opts[:socket]
       raise MongoArgumentError, "command must be given a selector" unless selector.is_a?(Hash) && !selector.empty?
       if selector.keys.length > 1 && RUBY_VERSION < '1.9' && selector.class != BSON::OrderedHash
         raise MongoArgumentError, "DB#command requires an OrderedHash when hash contains multiple keys"
@@ -470,7 +509,7 @@ module Mongo
 
       begin
         result = Cursor.new(system_command_collection,
-          :limit => -1, :selector => selector, :socket => sock).next_document
+          :limit => -1, :selector => selector, :socket => socket).next_document
       rescue OperationFailure => ex
         raise OperationFailure, "Database command '#{selector.keys.first}' failed: #{ex.message}"
       end
@@ -478,7 +517,13 @@ module Mongo
       if result.nil?
         raise OperationFailure, "Database command '#{selector.keys.first}' failed: returned null."
       elsif (check_response && !ok?(result))
-        raise OperationFailure, "Database command '#{selector.keys.first}' failed: #{result.inspect}"
+        message = "Database command '#{selector.keys.first}' failed: ("
+        message << result.map do |key, value|
+          "#{key}: '#{value}'"
+        end.join('; ')
+        message << ').'
+        code = result['code'] || result['assertionCode']
+        raise OperationFailure.new(message, code, result)
       else
         result
       end
@@ -570,14 +615,26 @@ module Mongo
     # @raise [MongoDBError] if the command fails or there's a problem with the validation
     #   data, or if the collection is invalid.
     def validate_collection(name)
-      doc = command({:validate => name}, :check_response => false)
+      cmd = BSON::OrderedHash.new
-      raise MongoDBError, "Error with validate command: #{doc.inspect}" unless ok?(doc)
+      cmd[:validate] = name
-      result = doc['result']
+      cmd[:full] = true
-      raise MongoDBError, "Error with validation data: #{doc.inspect}" unless result.kind_of?(String)
+      doc = command(cmd, :check_response => false)
-      raise MongoDBError, "Error: invalid collection #{name}: #{doc.inspect}" if result =~ /\b(exception|corrupt)\b/i
+      if !ok?(doc)
+        raise MongoDBError, "Error with validate command: #{doc.inspect}"
+      end
+      if (doc.has_key?('valid') && !doc['valid']) || (doc['result'] =~ /\b(exception|corrupt)\b/i)
+        raise MongoDBError, "Error: invalid collection #{name}: #{doc.inspect}"
+      end
       doc
     end
 
+    # The value of the read preference. This will be
+    # either +:primary+, +:secondary+, or an object
+    # representing the tags to be read from.
+    def read_preference
+      @read_preference
+    end
+
     private
 
     def system_command_collection

lib/mongo/exceptions.rb

@@ -2,7 +2,7 @@
 
 #
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -22,10 +22,20 @@ module Mongo
   class MongoRubyError < StandardError; end
 
   # Raised when MongoDB itself has returned an error.
-  class MongoDBError < RuntimeError; end
+  class MongoDBError < RuntimeError
 
-  # Raised when configuration options cause connections, queries, etc., to fail.
+     # @return The entire failed command's response object, if available.
-  class ConfigurationError < MongoRubyError; end
+     attr_reader :result
+
+     # @return The failed command's error code, if availab.e
+     attr_reader :error_code
+
+     def initialize(message=nil, error_code=nil, result=nil)
+       @error_code = error_code
+       @result = result
+       super(message)
+     end
+  end
 
   # Raised on fatal errors to GridFS.
   class GridError < MongoRubyError; end
@@ -48,6 +58,9 @@ module Mongo
   # Raised on failures in connection to the database server.
   class ConnectionTimeoutError < MongoRubyError; end
 
+  # Raised when no tags in a read preference maps to a given connection.
+  class NodeWithTagsNotFound < MongoRubyError; end
+
   # Raised when a connection operation fails.
   class ConnectionFailure < MongoDBError; end
 
@@ -57,6 +70,9 @@ module Mongo
   # Raised when a database operation fails.
   class OperationFailure < MongoDBError; end
 
+  # Raised when a socket read operation times out.
+  class OperationTimeout < SocketError; end
+
   # Raised when a client attempts to perform an invalid operation.
   class InvalidOperation < MongoDBError; end
 

lib/mongo/gridfs/grid.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -38,8 +38,10 @@ module Mongo
       @chunks  = @db["#{fs_name}.chunks"]
       @fs_name = fs_name
 
-      # Ensure indexes only if not connected to slave.
+      # Create indexes only if we're connected to a primary node.
-      unless db.connection.slave_ok?
+      connection = @db.connection
+      if (connection.class == Connection && connection.read_primary?) ||
+          (connection.class == ReplSetConnection && connection.primary)
         @chunks.create_index([['files_id', Mongo::ASCENDING], ['n', Mongo::ASCENDING]], :unique => true)
       end
     end
@@ -63,11 +65,12 @@ module Mongo
     # @option opts [Boolean] :safe (false) When safe mode is enabled, the chunks sent to the server
     #   will be validated using an md5 hash. If validation fails, an exception will be raised.
     #
-    # @return [Mongo::ObjectId] the file's id.
+    # @return [BSON::ObjectId] the file's id.
     def put(data, opts={})
-      filename = opts.delete :filename
+      opts     = opts.dup
+      filename = opts.delete(:filename)
       opts.merge!(default_grid_io_opts)
-      file = GridIO.new(@files, @chunks, filename, 'w', opts=opts)
+      file = GridIO.new(@files, @chunks, filename, 'w', opts)
       file.write(data)
       file.close
       file.files_id

lib/mongo/gridfs/grid_ext.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -33,19 +33,19 @@ module Mongo
       # @example
       #
       #   # Check for the existence of a given filename
-      #   @grid = GridFileSystem.new(@db)
+      #   @grid = Mongo::GridFileSystem.new(@db)
       #   @grid.exist?(:filename => 'foo.txt')
       #
       #   # Check for existence filename and content type
-      #   @grid = GridFileSystem.new(@db)
+      #   @grid = Mongo::GridFileSystem.new(@db)
       #   @grid.exist?(:filename => 'foo.txt', :content_type => 'image/jpg')
       #
       #   # Check for existence by _id
-      #   @grid = Grid.new(@db)
+      #   @grid = Mongo::Grid.new(@db)
       #   @grid.exist?(:_id => BSON::ObjectId.from_string('4bddcd24beffd95a7db9b8c8'))
       #
       #   # Check for existence by an arbitrary attribute.
-      #   @grid = Grid.new(@db)
+      #   @grid = Mongo::Grid.new(@db)
       #   @grid.exist?(:tags => {'$in' => ['nature', 'zen', 'photography']})
       #
       # @return [nil, Hash] either nil for the file's metadata as a hash.

lib/mongo/gridfs/grid_file_system.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -39,8 +39,10 @@ module Mongo
 
       @default_query_opts = {:sort => [['filename', 1], ['uploadDate', -1]], :limit => 1}
 
-      # Ensure indexes only if not connected to slave.
+      # Create indexes only if we're connected to a primary node.
-      unless db.connection.slave_ok?
+      connection = @db.connection
+      if (connection.class == Connection && connection.read_primary?) ||
+          (connection.class == ReplSetConnection && connection.primary)
         @files.create_index([['filename', 1], ['uploadDate', -1]])
         @chunks.create_index([['files_id', Mongo::ASCENDING], ['n', Mongo::ASCENDING]], :unique => true)
       end
@@ -69,32 +71,41 @@ module Mongo
     #  GridFileSystem#delete.
     # @option opts [Boolean] :safe (false) When safe mode is enabled, the chunks sent to the server
     #   will be validated using an md5 hash. If validation fails, an exception will be raised.
+    # @option opts [Integer] :versions (false) deletes all versions which exceed the number specified to 
+    #   retain ordered by uploadDate. This option only works in 'w' mode. Certain precautions must be taken when 
+    #   deleting GridFS files. See the notes under GridFileSystem#delete.
     #
     # @example
     #
     #  # Store the text "Hello, world!" in the grid file system.
-    #  @grid = GridFileSystem.new(@db)
+    #  @grid = Mongo::GridFileSystem.new(@db)
     #  @grid.open('filename', 'w') do |f|
     #    f.write "Hello, world!"
     #  end
     #
     #  # Output "Hello, world!"
-    #  @grid = GridFileSystem.new(@db)
+    #  @grid = Mongo::GridFileSystem.new(@db)
     #  @grid.open('filename', 'r') do |f|
     #    puts f.read
     #  end
     #
     #  # Write a file on disk to the GridFileSystem
     #  @file = File.open('image.jpg')
-    #  @grid = GridFileSystem.new(@db)
+    #  @grid = Mongo::GridFileSystem.new(@db)
     #  @grid.open('image.jpg, 'w') do |f|
     #    f.write @file
     #  end
     #
     #  @return [Mongo::GridIO]
     def open(filename, mode, opts={})
+      opts = opts.dup
       opts.merge!(default_grid_io_opts(filename))
-      del  = opts.delete(:delete_old) && mode == 'w'
+      if mode == 'w'
+        versions = opts.delete(:versions)
+        if opts.delete(:delete_old) || (versions && versions < 1)
+          versions = 1
+        end
+      end
       file = GridIO.new(@files, @chunks, filename, mode, opts)
       return file unless block_given?
       result = nil
@@ -102,9 +113,9 @@ module Mongo
         result = yield file
       ensure
         id = file.close
-        if del
+        if versions
           self.delete do
-            @files.find({'filename' => filename, '_id' => {'$ne' => id}}, :fields => ['_id'])
+            @files.find({'filename' => filename, '_id' => {'$ne' => id}}, :fields => ['_id'], :sort => ['uploadDate', -1], :skip => (versions - 1))
           end
         end
       end

lib/mongo/gridfs/grid_io.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,10 +17,6 @@
 # ++
 
 require 'digest/md5'
-begin
-require 'mime/types'
-rescue LoadError
-end
 
 module Mongo
 
@@ -59,6 +55,7 @@ module Mongo
       @chunks       = chunks
       @filename     = filename
       @mode         = mode
+      opts          = opts.dup
       @query        = opts.delete(:query) || {}
       @query_opts   = opts.delete(:query_opts) || {}
       @fs_name      = opts.delete(:fs_name) || Grid::DEFAULT_FS_NAME
@@ -172,6 +169,57 @@ module Mongo
     def tell
       @file_position
     end
+    alias :pos :tell
+
+    # Rewind the file. This is equivalent to seeking to the zeroth position.
+    #
+    # @return [Integer] the position of the file after rewinding (always zero).
+    def rewind
+      raise GridError, "file not opened for read" unless @mode[0] == ?r
+      seek(0)
+    end
+
+    # Return a boolean indicating whether the position pointer is
+    # at the end of the file.
+    #
+    # @return [Boolean]
+    def eof
+      raise GridError, "file not opened for read #{@mode}" unless @mode[0] == ?r
+      @file_position >= @file_length
+    end
+    alias :eof? :eof
+
+    # Return the next line from a GridFS file. This probably
+    # makes sense only if you're storing plain text. This method
+    # has a somewhat tricky API, which it inherits from Ruby's
+    # StringIO#gets.
+    #
+    # @param [String, Integer] separator or length. If a separator,
+    #   read up to the separator. If a length, read the +length+ number
+    #   of bytes. If nil, read the entire file.
+    # @param [Integer] length If a separator is provided, then
+    #   read until either finding the separator or
+    #   passing over the +length+ number of bytes.
+    #
+    # @return [String]
+    def gets(separator="\n", length=nil)
+      if separator.nil?
+        read_all
+      elsif separator.is_a?(Integer)
+        read_length(separator)
+      elsif separator.length > 1
+        read_to_string(separator, length)
+      else
+        read_to_character(separator, length)
+      end
+    end
+
+    # Return the next byte from the GridFS file.
+    #
+    # @return [String]
+    def getc
+      read_length(1)
+    end
 
     # Creates or updates the document from the files collection that
     # stores the chunks' metadata. The file becomes available only after
@@ -205,6 +253,7 @@ module Mongo
       return read_all unless block_given?
       while chunk = read(chunk_size) 
         yield chunk
+        break if chunk.empty?
       end
       self
     end
@@ -226,7 +275,7 @@ module Mongo
     end
 
     def save_chunk(chunk)
-      @chunks.insert(chunk)
+      @chunks.save(chunk)
     end
 
     def get_chunk(n)
@@ -235,21 +284,18 @@ module Mongo
       chunk
     end
 
-    def last_chunk_number
-      (@file_length / @chunk_size).to_i
-    end
-
     # Read a file in its entirety.
     def read_all
       buf = ''
       if @current_chunk
         buf << @current_chunk['data'].to_s
-        while chunk = get_chunk(@current_chunk['n'] + 1)
+        while buf.size < @file_length
-          buf << chunk['data'].to_s
+          @current_chunk = get_chunk(@current_chunk['n'] + 1)
-          @current_chunk = chunk
+          break if @current_chunk.nil?
+          buf << @current_chunk['data'].to_s
         end
+        @file_position = @file_length
       end
-      @file_position = @file_length
       buf
     end
 
@@ -260,7 +306,7 @@ module Mongo
       if length.nil?
         to_read = remaining
       else
-        to_read    = length > remaining ? remaining : length
+        to_read = length > remaining ? remaining : length
       end
       return nil unless remaining > 0
 
@@ -280,6 +326,48 @@ module Mongo
       buf
     end
 
+    def read_to_character(character="\n", length=nil)
+      result = ''
+      len = 0
+      while char = getc
+        result << char
+        len += 1
+        break if char == character || (length ? len >= length : false)
+      end
+      result.length > 0 ? result : nil
+    end
+
+    def read_to_string(string="\n", length=nil)
+      result = ''
+      len = 0
+      match_idx = 0
+      match_num = string.length - 1
+      to_match = string[match_idx].chr
+      if length
+        matcher = lambda {|idx, num| idx < num && len < length }
+      else
+        matcher = lambda {|idx, num| idx < num}
+      end
+      while matcher.call(match_idx, match_num) && char = getc
+        result << char
+        len += 1
+        if char == to_match
+          while match_idx < match_num do
+            match_idx += 1
+            to_match = string[match_idx].chr
+            char = getc
+            result << char
+            if char != to_match
+              match_idx = 0
+              to_match = string[match_idx].chr
+              break
+            end
+          end
+        end
+      end
+      result.length > 0 ? result : nil
+    end
+
     def cache_chunk_data
       @current_chunk_data = @current_chunk['data'].to_s
       if @current_chunk_data.respond_to?(:force_encoding)
@@ -332,11 +420,12 @@ module Mongo
 
     # Initialize the class for writing a file.
     def init_write(opts)
+      opts           = opts.dup
       @files_id      = opts.delete(:_id) || BSON::ObjectId.new
       @content_type  = opts.delete(:content_type) || (defined? MIME) && get_content_type || DEFAULT_CONTENT_TYPE
       @chunk_size    = opts.delete(:chunk_size) || DEFAULT_CHUNK_SIZE
-      @metadata      = opts.delete(:metadata) if opts[:metadata]
+      @metadata      = opts.delete(:metadata)
-      @aliases       = opts.delete(:aliases) if opts[:aliases]
+      @aliases       = opts.delete(:aliases)
       @file_length   = 0
       opts.each {|k, v| self[k] = v}
       check_existing_file if @safe
@@ -374,7 +463,9 @@ module Mongo
       @server_md5 = @files.db.command(md5_command)['md5']
       if @safe
         @client_md5 = @local_md5.hexdigest
-        if @local_md5 != @server_md5
+        if @local_md5 == @server_md5
+          @server_md5
+        else
           raise GridMD5Failure, "File on server failed MD5 check"
         end
       else

lib/mongo/gridfs/grid_io_fix.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

lib/mongo/networking.rb

@@ -0,0 +1,369 @@
+module Mongo
+  module Networking
+
+    STANDARD_HEADER_SIZE = 16
+    RESPONSE_HEADER_SIZE = 20
+
+    # Counter for generating unique request ids.
+    @@current_request_id = 0
+
+    # Send a message to MongoDB, adding the necessary headers.
+    #
+    # @param [Integer] operation a MongoDB opcode.
+    # @param [BSON::ByteBuffer] message a message to send to the database.
+    #
+    # @option opts [Symbol] :connection (:writer) The connection to which
+    #   this message should be sent. Valid options are :writer and :reader.
+    #
+    # @return [Integer] number of bytes sent
+    def send_message(operation, message, opts={})
+      if opts.is_a?(String)
+        warn "Connection#send_message no longer takes a string log message. " +
+          "Logging is now handled within the Collection and Cursor classes."
+        opts = {}
+      end
+
+      connection = opts.fetch(:connection, :writer)
+
+      add_message_headers(message, operation)
+      packed_message = message.to_s
+
+      sock = nil
+      begin
+        if connection == :writer
+          sock = checkout_writer
+        else
+          sock = checkout_reader
+        end
+
+        send_message_on_socket(packed_message, sock)
+      rescue SystemStackError, NoMemoryError, SystemCallError => ex
+        close
+        raise ex
+      ensure
+        if sock
+          if connection == :writer
+            checkin_writer(sock)
+          else
+            checkin_reader(sock)
+          end
+        end
+      end
+    end
+
+    # Sends a message to the database, waits for a response, and raises
+    # an exception if the operation has failed.
+    #
+    # @param [Integer] operation a MongoDB opcode.
+    # @param [BSON::ByteBuffer] message a message to send to the database.
+    # @param [String] db_name the name of the database. used on call to get_last_error.
+    # @param [Hash] last_error_params parameters to be sent to getLastError. See DB#error for
+    #   available options.
+    #
+    # @see DB#get_last_error for valid last error params.
+    #
+    # @return [Hash] The document returned by the call to getlasterror.
+    def send_message_with_safe_check(operation, message, db_name, log_message=nil, last_error_params=false)
+      docs = num_received = cursor_id = ''
+      add_message_headers(message, operation)
+
+      last_error_message = BSON::ByteBuffer.new
+      build_last_error_message(last_error_message, db_name, last_error_params)
+      last_error_id = add_message_headers(last_error_message, Mongo::Constants::OP_QUERY)
+
+      packed_message = message.append!(last_error_message).to_s
+      sock = nil
+      begin
+        sock = checkout_writer
+        send_message_on_socket(packed_message, sock)
+        docs, num_received, cursor_id = receive(sock, last_error_id)
+        checkin_writer(sock)
+      rescue ConnectionFailure, OperationFailure, OperationTimeout => ex
+        checkin_writer(sock)
+        raise ex
+      rescue SystemStackError, NoMemoryError, SystemCallError => ex
+        close
+        raise ex
+      end
+
+      if num_received == 1 && (error = docs[0]['err'] || docs[0]['errmsg'])
+        if error.include?("not master")
+          close
+          raise ConnectionFailure.new(docs[0]['code'].to_s + ': ' + error, docs[0]['code'], docs[0])
+        else
+          error = "wtimeout" if error == "timeout"
+          raise OperationFailure.new(docs[0]['code'].to_s + ': ' + error, docs[0]['code'], docs[0])
+        end
+      end
+
+      docs[0]
+    end
+
+    # Sends a message to the database and waits for the response.
+    #
+    # @param [Integer] operation a MongoDB opcode.
+    # @param [BSON::ByteBuffer] message a message to send to the database.
+    # @param [String] log_message this is currently a no-op and will be removed.
+    # @param [Socket] socket a socket to use in lieu of checking out a new one.
+    # @param [Boolean] command (false) indicate whether this is a command. If this is a command,
+    #   the message will be sent to the primary node.
+    # @param [Boolean] command (false) indicate whether the cursor should be exhausted. Set
+    #   this to true only when the OP_QUERY_EXHAUST flag is set.
+    #
+    # @return [Array]
+    #   An array whose indexes include [0] documents returned, [1] number of document received,
+    #   and [3] a cursor_id.
+    def receive_message(operation, message, log_message=nil, socket=nil, command=false,
+                        read=:primary, exhaust=false)
+      request_id = add_message_headers(message, operation)
+      packed_message = message.to_s
+
+      result = ''
+      sock   = nil
+      begin
+        if socket
+          sock = socket
+          should_checkin = false
+        else
+          if command || read == :primary
+            sock = checkout_writer
+          elsif read == :secondary
+            sock = checkout_reader
+          else
+            sock = checkout_tagged(read)
+          end
+          should_checkin = true
+        end
+
+        send_message_on_socket(packed_message, sock)
+        result = receive(sock, request_id, exhaust)
+      rescue SystemStackError, NoMemoryError, SystemCallError => ex
+        close
+        raise ex
+      rescue Exception => ex
+        if defined?(IRB)
+          close if ex.class == IRB::Abort
+        end
+        raise ex
+      ensure
+        if should_checkin
+          if command || read == :primary
+            checkin_writer(sock)
+          elsif read == :secondary
+            checkin_reader(sock)
+          else
+            # TODO: sock = checkout_tagged(read)
+          end
+        end
+      end
+      result
+    end
+
+    private
+
+    def receive(sock, cursor_id, exhaust=false)
+      begin
+        if exhaust
+          docs = []
+          num_received = 0
+
+          while(cursor_id != 0) do
+            receive_header(sock, cursor_id, exhaust)
+            number_received, cursor_id = receive_response_header(sock)
+            new_docs, n = read_documents(number_received, sock)
+            docs += new_docs
+            num_received += n
+          end
+
+          return [docs, num_received, cursor_id]
+        else
+          receive_header(sock, cursor_id, exhaust)
+          number_received, cursor_id = receive_response_header(sock)
+          docs, num_received = read_documents(number_received, sock)
+
+          return [docs, num_received, cursor_id]
+        end
+      rescue Mongo::ConnectionFailure => ex
+        close
+        raise ex
+      end
+    end
+
+    def receive_header(sock, expected_response, exhaust=false)
+      header = receive_message_on_socket(16, sock)
+
+      # unpacks to size, request_id, response_to
+      response_to = header.unpack('VVV')[2]
+
+      if !exhaust && expected_response != response_to
+        raise Mongo::ConnectionFailure, "Expected response #{expected_response} but got #{response_to}"
+      end
+
+      unless header.size == STANDARD_HEADER_SIZE
+        raise "Short read for DB response header: " +
+          "expected #{STANDARD_HEADER_SIZE} bytes, saw #{header.size}"
+      end
+      nil
+    end
+
+    def receive_response_header(sock)
+      header_buf = receive_message_on_socket(RESPONSE_HEADER_SIZE, sock)
+      if header_buf.length != RESPONSE_HEADER_SIZE
+        raise "Short read for DB response header; " +
+          "expected #{RESPONSE_HEADER_SIZE} bytes, saw #{header_buf.length}"
+      end
+
+      # unpacks to flags, cursor_id_a, cursor_id_b, starting_from, number_remaining
+      flags, cursor_id_a, cursor_id_b, _, number_remaining = header_buf.unpack('VVVVV')
+      
+      check_response_flags(flags)
+      cursor_id = (cursor_id_b << 32) + cursor_id_a
+      [number_remaining, cursor_id]
+    end
+
+    def check_response_flags(flags)
+      if flags & Mongo::Constants::REPLY_CURSOR_NOT_FOUND != 0
+        raise Mongo::OperationFailure, "Query response returned CURSOR_NOT_FOUND. " +
+          "Either an invalid cursor was specified, or the cursor may have timed out on the server."
+      elsif flags & Mongo::Constants::REPLY_QUERY_FAILURE != 0
+        # Getting odd failures when a exception is raised here.
+      end
+    end
+
+    def read_documents(number_received, sock)
+      docs = []
+      number_remaining = number_received
+      while number_remaining > 0 do
+        buf = receive_message_on_socket(4, sock)
+        size = buf.unpack('V')[0]
+        buf << receive_message_on_socket(size - 4, sock)
+        number_remaining -= 1
+        docs << BSON::BSON_CODER.deserialize(buf)
+      end
+      [docs, number_received]
+    end
+
+    # Constructs a getlasterror message. This method is used exclusively by
+    # Connection#send_message_with_safe_check.
+    #
+    # Because it modifies message by reference, we don't need to return it.
+    def build_last_error_message(message, db_name, opts)
+      message.put_int(0)
+      BSON::BSON_RUBY.serialize_cstr(message, "#{db_name}.$cmd")
+      message.put_int(0)
+      message.put_int(-1)
+      cmd = BSON::OrderedHash.new
+      cmd[:getlasterror] = 1
+      if opts.is_a?(Hash)
+        opts.assert_valid_keys(:w, :wtimeout, :fsync, :j)
+        cmd.merge!(opts)
+      end
+      message.put_binary(BSON::BSON_CODER.serialize(cmd, false).to_s)
+      nil
+    end
+
+    # Prepares a message for transmission to MongoDB by
+    # constructing a valid message header.
+    #
+    # Note: this method modifies message by reference.
+    #
+    # @return [Integer] the request id used in the header
+    def add_message_headers(message, operation)
+      headers = [
+        # Message size.
+        16 + message.size,
+
+        # Unique request id.
+        request_id = get_request_id,
+
+        # Response id.
+        0,
+
+        # Opcode.
+        operation
+      ].pack('VVVV')
+
+      message.prepend!(headers)
+
+      request_id
+    end
+
+    # Increment and return the next available request id.
+    #
+    # return [Integer]
+    def get_request_id
+      request_id = ''
+      @id_lock.synchronize do
+        request_id = @@current_request_id += 1
+      end
+      request_id
+    end
+
+    # Low-level method for sending a message on a socket.
+    # Requires a packed message and an available socket,
+    #
+    # @return [Integer] number of bytes sent
+    def send_message_on_socket(packed_message, socket)
+      begin
+      total_bytes_sent = socket.send(packed_message)
+      if total_bytes_sent != packed_message.size
+        packed_message.slice!(0, total_bytes_sent)
+        while packed_message.size > 0
+          byte_sent = socket.send(packed_message)
+          total_bytes_sent += byte_sent
+          packed_message.slice!(0, byte_sent)
+        end
+      end
+      total_bytes_sent
+      rescue => ex
+        close
+        raise ConnectionFailure, "Operation failed with the following exception: #{ex}:#{ex.message}"
+      end
+    end
+
+    # Low-level method for receiving data from socket.
+    # Requires length and an available socket.
+    def receive_message_on_socket(length, socket)
+      begin
+          message = receive_data(length, socket)
+      rescue OperationTimeout, ConnectionFailure => ex
+        close
+
+        if ex.class == OperationTimeout
+          raise OperationTimeout, "Timed out waiting on socket read."
+        else
+          raise ConnectionFailure, "Operation failed with the following exception: #{ex}"
+        end
+      end
+      message
+    end
+
+    def receive_data(length, socket)
+      message = new_binary_string
+      socket.read(length, message)
+ 
+      raise ConnectionFailure, "connection closed" unless message && message.length > 0
+      if message.length < length
+        chunk = new_binary_string
+        while message.length < length
+          socket.read(length - message.length, chunk)
+          raise ConnectionFailure, "connection closed" unless chunk.length > 0
+          message << chunk
+        end
+      end
+      message
+    end
+
+    if defined?(Encoding)
+      BINARY_ENCODING = Encoding.find("binary")
+
+      def new_binary_string
+        "".force_encoding(BINARY_ENCODING)
+      end
+    else
+      def new_binary_string
+        ""
+      end
+    end
+  end
+end

lib/mongo/repl_set_connection.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -20,44 +20,68 @@ module Mongo
 
   # Instantiates and manages connections to a MongoDB replica set.
   class ReplSetConnection < Connection
-    attr_reader :nodes, :secondaries, :arbiters, :read_pool, :secondary_pools
+
+    REPL_SET_OPTS = [:read, :refresh_mode, :refresh_interval, :require_primary,
+      :read_secondary, :rs_name, :name]
+
+    attr_reader :replica_set_name, :seeds, :refresh_interval, :refresh_mode,
+      :refresh_version, :manager
 
     # Create a connection to a MongoDB replica set.
     #
+    # If no args are provided, it will check <code>ENV["MONGODB_URI"]</code>.
+    #
     # Once connected to a replica set, you can find out which nodes are primary, secondary, and
     # arbiters with the corresponding accessors: Connection#primary, Connection#secondaries, and
     # Connection#arbiters. This is useful if your application needs to connect manually to nodes other
     # than the primary.
     #
-    # @param [Array] args A list of host-port pairs ending with a hash containing any options. See
+    # @param [Array] seeds "host:port" strings
-    #   the examples below for exactly how to use the constructor.
     #
-    # @option options [String] :rs_name (nil) The name of the replica set to connect to. You
+    # @option opts [String] :name (nil) The name of the replica set to connect to. You
     #   can use this option to verify that you're connecting to the right replica set.
-    # @option options [Boolean, Hash] :safe (false) Set the default safe-mode options
+    # @option opts [Boolean, Hash] :safe (false) Set the default safe-mode options
     #   propogated to DB objects instantiated off of this Connection. This
     #   default can be overridden upon instantiation of any DB by explicity setting a :safe value
     #   on initialization.
-    # @option options [Boolean] :read_secondary(false) If true, a random secondary node will be chosen,
+    # @option opts [:primary, :secondary] :read (:primary) The default read preference for Mongo::DB
-    #   and all reads will be directed to that node.
+    #   objects created from this connection object. If +:secondary+ is chosen, reads will be sent
-    # @option options [Logger, #debug] :logger (nil) Logger instance to receive driver operation log.
+    #   to one of the closest available secondary nodes. If a secondary node cannot be located, the
-    # @option options [Integer] :pool_size (1) The maximum number of socket connections allowed per
+    #   read will be sent to the primary.
+    # @option opts [Logger] :logger (nil) Logger instance to receive driver operation log.
+    # @option opts [Integer] :pool_size (1) The maximum number of socket connections allowed per
     #   connection pool. Note: this setting is relevant only for multi-threaded applications.
-    # @option options [Float] :timeout (5.0) When all of the connections a pool are checked out,
+    # @option opts [Float] :pool_timeout (5.0) When all of the connections a pool are checked out,
     #   this is the number of seconds to wait for a new connection to be released before throwing an exception.
     #   Note: this setting is relevant only for multi-threaded applications.
+    # @option opts [Float] :op_timeout (nil) The number of seconds to wait for a read operation to time out.
+    # @option opts [Float] :connect_timeout (30) The number of seconds to wait before timing out a
+    #   connection attempt.
+    # @option opts [Boolean] :ssl (false) If true, create the connection to the server using SSL.
+    # @option opts [Boolean] :refresh_mode (false) Set this to :sync to periodically update the
+    #   state of the connection every :refresh_interval seconds. Replica set connection failures
+    #   will always trigger a complete refresh. This option is useful when you want to add new nodes
+    #   or remove replica set nodes not currently in use by the driver.
+    # @option opts [Integer] :refresh_interval (90) If :refresh_mode is enabled, this is the number of seconds
+    #   between calls to check the replica set's state.
+    # @option opts [Boolean] :require_primary (true) If true, require a primary node for the connection
+    #   to succeed. Otherwise, connection will succeed as long as there's at least one secondary node.
+    # Note: that the number of seed nodes does not have to be equal to the number of replica set members.
+    # The purpose of seed nodes is to permit the driver to find at least one replica set member even if a member is down.
     #
-    # @example Connect to a replica set and provide two seed nodes:
+    # @example Connect to a replica set and provide two seed nodes.
-    #   ReplSetConnection.new(['localhost', 30000], ['localhost', 30001])
+    #   Mongo::ReplSetConnection.new(['localhost:30000', 'localhost:30001'])
     #
     # @example Connect to a replica set providing two seed nodes and ensuring a connection to the replica set named 'prod':
-    #   ReplSetConnection.new(['localhost', 30000], ['localhost', 30001], :rs_name => 'prod')
+    #   Mongo::ReplSetConnection.new(['localhost:30000', 'localhost:30001'], :name => 'prod')
     #
     # @example Connect to a replica set providing two seed nodes and allowing reads from a secondary node:
-    #   ReplSetConnection.new(['localhost', 30000], ['localhost', 30001], :read_secondary => true)
+    #   Mongo::ReplSetConnection.new(['localhost:30000', 'localhost:30001'], :read => :secondary)
     #
     # @see http://api.mongodb.org/ruby/current/file.REPLICA_SETS.html Replica sets in Ruby
     #
+    # @raise [MongoArgumentError] If called with no arguments and <code>ENV["MONGODB_URI"]</code> implies a direct connection.
+    #
     # @raise [ReplicaSetConnectionError] This is raised if a replica set name is specified and the
     #   driver fails to connect to a replica set with that name.
     def initialize(*args)
@@ -67,67 +91,170 @@ module Mongo
         opts = {}
       end
 
-      unless args.length > 0
+      nodes = args
-        raise MongoArgumentError, "A ReplSetConnection requires at least one node."
+
+      if nodes.empty? and ENV.has_key?('MONGODB_URI')
+        parser = URIParser.new ENV['MONGODB_URI'], opts
+        if parser.direct?
+          raise MongoArgumentError, "Mongo::ReplSetConnection.new called with no arguments, but ENV['MONGODB_URI'] implies a direct connection."
+        end
+        opts = parser.connection_options
+        nodes = parser.nodes
       end
 
-      # Get seed nodes
+      unless nodes.length > 0
-      @nodes = args
+        raise MongoArgumentError, "A ReplSetConnection requires at least one seed node."
+      end
 
-      # Replica set name
+      # This is temporary until support for the old format is dropped
-      @replica_set = opts[:rs_name]
+      if nodes.first.last.is_a?(Integer)
+        warn "Initiating a ReplSetConnection with seeds passed as individual [host, port] array arguments is deprecated."
+        warn "Please specify hosts as an array of 'host:port' strings; the old format will be removed in v2.0"
+        @seeds = nodes
+      else
+        @seeds = nodes.first.map do |host_port|
+          host, port = host_port.split(":")
+          [ host, port.to_i ]
+        end
+      end
 
-      # Cache the various node types when connecting to a replica set.
+      # TODO: add a method for replacing this list of node.
-      @secondaries = []
+      @seeds.freeze
-      @arbiters    = []
 
-      # Connection pools for each secondary node
+      # Refresh
-      @secondary_pools = []
+      @last_refresh = Time.now
-      @read_pool = nil
+      @refresh_version = 0
 
-      # Are we allowing reads from secondaries?
+      # No connection manager by default.
-      @read_secondary = opts.fetch(:read_secondary, false)
+      @manager = nil
+      @old_managers = []
 
+      # Lock for request ids.
+      @id_lock = Mutex.new
+
+      @pool_mutex = Mutex.new
+      @connected = false
+
+      @safe_mutex_lock = Mutex.new
+      @safe_mutexes = Hash.new {|hash, key| hash[key] = Mutex.new}
+
+      @connect_mutex = Mutex.new
+      @refresh_mutex = Mutex.new
+
+      check_opts(opts)
       setup(opts)
     end
 
-    # Create a new socket and attempt to connect to master.
+    def valid_opts
-    # If successful, sets host and port to master and returns the socket.
+      GENERIC_OPTS + REPL_SET_OPTS
-    #
+    end
-    # If connecting to a replica set, this method will replace the
+
-    # initially-provided seed list with any nodes known to the set.
+    def inspect
-    #
+      "<Mongo::ReplSetConnection:0x#{self.object_id.to_s(16)} @seeds=#{@seeds.inspect} " +
-    # @raise [ConnectionFailure] if unable to connect to any host or port.
+        "@connected=#{@connected}>"
+    end
+
+    # Initiate a connection to the replica set.
     def connect
-      reset_connection
+      log(:info, "Connecting...")
-      @nodes_to_try = @nodes.clone
+      @connect_mutex.synchronize do
+        return if @connected
 
-      while connecting?
+        discovered_seeds = @manager ? @manager.seeds : []
-        node   = @nodes_to_try.shift
+        @manager = PoolManager.new(self, discovered_seeds)
-        config = check_is_master(node)
 
-        if is_primary?(config)
+        Thread.current[:managers] ||= Hash.new
-          set_primary(node)
+        Thread.current[:managers][self] = @manager
-        else
-          set_auxillary(node, config)
-        end
-      end
 
-      pick_secondary_for_read if @read_secondary
+        @manager.connect
+        @refresh_version += 1
 
-      if connected?
+        if @require_primary && @manager.primary.nil? #TODO: in v2.0, we'll let this be optional and do a lazy connect.
-        BSON::BSON_CODER.update_max_bson_size(self)
+          close
-      else
-        if @secondary_pools.empty?
-          raise ConnectionFailure, "Failed to connect any given host:port"
-        else
           raise ConnectionFailure, "Failed to connect to primary node."
+        elsif @manager.read_pool.nil?
+          close
+          raise ConnectionFailure, "Failed to connect to any node."
+        else
+          @connected = true
         end
       end
     end
 
+    # Determine whether a replica set refresh is
+    # required. If so, run a hard refresh. You can
+    # force a hard refresh by running
+    # ReplSetConnection#hard_refresh!
+    #
+    # @return [Boolean] +true+ unless a hard refresh
+    #   is run and the refresh lock can't be acquired.
+    def refresh(opts={})
+      if !connected?
+        log(:info, "Trying to check replica set health but not " +
+          "connected...")
+        return hard_refresh!
+      end
+
+      log(:debug, "Checking replica set connection health...")
+      @manager.check_connection_health
+
+      if @manager.refresh_required?
+        return hard_refresh!
+      end
+
+      return true
+    end
+
+    # Force a hard refresh of this connection's view
+    # of the replica set.
+    #
+    # @return [Boolean] +true+ if hard refresh
+    #   occurred. +false+ is returned when unable
+    #   to get the refresh lock.
+    def hard_refresh!
+      log(:info, "Initiating hard refresh...")
+      discovered_seeds = @manager ? @manager.seeds : []
+      new_manager = PoolManager.new(self, discovered_seeds | @seeds)
+      new_manager.connect
+
+      Thread.current[:managers][self] = new_manager
+
+      # TODO: make sure that connect has succeeded
+      @old_managers << @manager
+      @manager = new_manager
+
+      @refresh_version += 1
+      return true
+    end
+
+    def connected?
+      @connected && (@manager.primary_pool || @manager.read_pool)
+    end
+
+    # @deprecated
     def connecting?
-      @nodes_to_try.length > 0
+      warn "ReplSetConnection#connecting? is deprecated and will be removed in v2.0."
+      false
+    end
+
+    # The replica set primary's host name.
+    #
+    # @return [String]
+    def host
+      @manager.primary_pool.host
+    end
+
+    # The replica set primary's port.
+    #
+    # @return [Integer]
+    def port
+      @manager.primary_pool.port
+    end
+
+    def nodes
+      warn "ReplSetConnection#nodes is DEPRECATED and will be removed in v2.0. " +
+        "Please use ReplSetConnection#seeds instead."
+      @seeds
     end
 
     # Determine whether we're reading from a primary node. If false,
@@ -135,169 +262,328 @@ module Mongo
     #
     # @return [Boolean]
     def read_primary?
-      !@read_pool || @read_pool.length.zero?
+      @manager.read_pool == @manager.primary_pool
+    end
+    alias :primary? :read_primary?
+
+    def read_preference
+      @read
     end
 
     # Close the connection to the database.
-    def close
+    def close(opts={})
-      super
+      if opts[:soft]
-      @read_pool = nil
+        @manager.close(:soft => true) if @manager
-      @secondary_pools.each do |pool|
+      else
-        pool.close
+        @manager.close if @manager
       end
+
+      # Clear the reference to this object.
+      if Thread.current[:managers]
+        Thread.current[:managers].delete(self)
+      end
+
+      @connected = false
     end
 
     # If a ConnectionFailure is raised, this method will be called
     # to close the connection and reset connection values.
-    # TODO: what's the point of this method?
+    # @deprecated
     def reset_connection
-      super
+      close
-      @secondaries     = []
+      warn "ReplSetConnection#reset_connection is now deprecated and will be removed in v2.0. " +
-      @secondary_pools = []
+        "Use ReplSetConnection#close instead."
-      @arbiters        = []
-      @nodes_tried  = []
-      @nodes_to_try = []
     end
 
-    # Is it okay to connect to a slave?
+    # Returns +true+ if it's okay to read from a secondary node.
+    # Since this is a replica set, this must always be true.
     #
-    # @return [Boolean]
+    # This method exist primarily so that Cursor objects will
+    # generate query messages with a slaveOkay value of +true+.
+    #
+    # @return [Boolean] +true+
     def slave_ok?
-      @read_secondary || @slave_ok
+      true
     end
 
-    private
+    def authenticate_pools
+      if primary_pool
+        primary_pool.authenticate_existing
+      end
+      secondary_pools.each do |pool|
+        pool.authenticate_existing
+      end
+    end
+
+    def logout_pools(db)
+      if primary_pool
+        primary_pool.logout_existing(db)
+      end
+      secondary_pools.each do |pool|
+        pool.logout_existing(db)
+      end
+    end
+
+    # Generic socket checkout
+    # Takes a block that returns a socket from pool
+    def checkout(&block)
+      if connected?
+        sync_refresh
+      else
+        connect
+      end
       
-    def check_is_master(node)
       begin
-        host, port = *node
+        socket = block.call
-        socket = TCPSocket.new(host, port)
+      rescue => ex
-        socket.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
+        checkin(socket) if socket
+        raise ex
+      end
       
-        config = self['admin'].command({:ismaster => 1}, :sock => socket)
+      if socket
+        socket
+      else
+        @connected = false
+        raise ConnectionFailure.new("Could not checkout a socket.")
+      end
+    end
 
-        check_set_name(config, socket)
+    # Checkout best available socket by trying primary
-      rescue OperationFailure, SocketError, SystemCallError, IOError => ex
+    # pool first and then falling back to secondary.
-        close unless connected?
+    def checkout_best
-      ensure
+      checkout do
-        @nodes_tried << node
+        socket = get_socket_from_pool(:primary)
-        if config
+        if !socket
-          nodes = []
+          connect
-          nodes += config['hosts'] if config['hosts']
+          socket = get_socket_from_pool(:secondary)
-          nodes += config['arbiters'] if config['arbiters']
-          nodes += config['passives'] if config['passives']
-          update_node_list(nodes)
-
-          if config['msg'] && @logger
-            @logger.warn("MONGODB #{config['msg']}")
-          end
         end
-
+        socket
-        socket.close if socket
       end
-
-      config
-    end
-
-    # Primary, when connecting to a replica can, can only be a true primary node.
-    # (And not a slave, which is possible when connecting with the standard
-    # Connection class.
-    def is_primary?(config)
-      config && (config['ismaster'] == 1 || config['ismaster'] == true)
-    end
-
-    # Pick a node randomly from the set of possible secondaries.
-    def pick_secondary_for_read
-      if (size = @secondary_pools.size) > 0
-        @read_pool = @secondary_pools[rand(size)]
-      end
-    end
-
-    # Make sure that we're connected to the expected replica set.
-    def check_set_name(config, socket)
-      if @replica_set
-        config = self['admin'].command({:replSetGetStatus => 1},
-                   :sock => socket, :check_response => false)
-
-        if !Mongo::Support.ok?(config)
-          raise ReplicaSetConnectionError, config['errmsg']
-        elsif config['set'] != @replica_set
-          raise ReplicaSetConnectionError,
-            "Attempting to connect to replica set '#{config['set']}' but expected '#{@replica_set}'"
-        end
-      end
-    end
-
-    # Determines what kind of node we have and caches its host
-    # and port so that users can easily connect manually.
-    def set_auxillary(node, config)
-      if config
-        if config['secondary']
-          host, port = *node
-          @secondaries << node unless @secondaries.include?(node)
-          @secondary_pools << Pool.new(self, host, port, :size => @pool_size, :timeout => @timeout)
-        elsif config['arbiterOnly']
-          @arbiters << node unless @arbiters.include?(node)
-        end
-      end
-    end
-
-    # Update the list of known nodes. Only applies to replica sets,
-    # where the response to the ismaster command will return a list
-    # of known hosts.
-    #
-    # @param hosts [Array] a list of hosts, specified as string-encoded
-    #   host-port values. Example: ["myserver-1.org:27017", "myserver-1.org:27017"]
-    #
-    # @return [Array] the updated list of nodes
-    def update_node_list(hosts)
-      new_nodes = hosts.map do |host|
-        if !host.respond_to?(:split)
-          warn "Could not parse host #{host.inspect}."
-          next
-        end
-
-        host, port = host.split(':')
-        [host, port ? port.to_i : Connection::DEFAULT_PORT]
-      end
-
-      # Replace the list of seed nodes with the canonical list.
-      @nodes = new_nodes.clone
-
-      @nodes_to_try = new_nodes - @nodes_tried
     end
     
     # Checkout a socket for reading (i.e., a secondary node).
+    # Note that @read_pool might point to the primary pool
+    # if no read pool has been defined.
     def checkout_reader
-      connect unless connected?
+      checkout do
+        socket = get_socket_from_pool(:read)
+        if !socket
+          connect
+          socket = get_socket_from_pool(:primary)
+        end
+        socket
+      end
+    end
 
-      if @read_pool
+    # Checkout a socket from a secondary
-        @read_pool.checkout
+    # For :read_preference => :secondary_only
-      else
+    def checkout_secondary
-        checkout_writer
+      checkout do
+        get_socket_from_pool(:secondary)
       end
     end
 
     # Checkout a socket for writing (i.e., a primary node).
     def checkout_writer
-      connect unless connected?
+      checkout do
-
+        get_socket_from_pool(:primary)
-      @primary_pool.checkout
+      end
     end
 
     # Checkin a socket used for reading.
     def checkin_reader(socket)
-      if @read_pool
+      if socket
-        @read_pool.checkin(socket)
+        socket.pool.checkin(socket)
-      else
-        checkin_writer(socket)
       end
+      sync_refresh
     end
 
     # Checkin a socket used for writing.
     def checkin_writer(socket)
-      if @primary_pool
+      if socket
-        @primary_pool.checkin(socket)
+        socket.pool.checkin(socket)
+      end
+      sync_refresh
+    end
+
+    def close_socket(socket)
+      begin
+        socket.close if socket
+      rescue IOError
+        log(:info, "Tried to close socket #{socket} but already closed.")
+      end
+    end
+
+    def ensure_manager
+      Thread.current[:managers] ||= Hash.new
+
+      if Thread.current[:managers][self] != @manager
+        Thread.current[:managers][self] = @manager
+      end
+    end
+
+    def get_socket_from_pool(pool_type)
+      ensure_manager
+
+      pool = case pool_type
+        when :primary
+          primary_pool
+        when :secondary
+          secondary_pool
+        when :read
+          read_pool
+      end
+
+      begin
+        if pool
+          pool.checkout
+        end
+      rescue ConnectionFailure => ex
+        log(:info, "Failed to checkout from #{pool} with #{ex.class}; #{ex.message}")
+        return nil
+      end
+    end
+
+    def local_manager
+      Thread.current[:managers][self] if Thread.current[:managers]
+    end
+
+    def arbiters
+      local_manager.arbiters.nil? ? [] : local_manager.arbiters
+    end
+
+    def primary
+      local_manager ? local_manager.primary : nil
+    end
+
+    # Note: might want to freeze these after connecting.
+    def secondaries
+      local_manager ? local_manager.secondaries : []
+    end
+
+    def hosts
+      local_manager ? local_manager.hosts : []
+    end
+
+    def primary_pool
+      local_manager ? local_manager.primary_pool : nil
+    end
+
+    def read_pool
+      local_manager ? local_manager.read_pool : nil
+    end
+
+    def secondary_pool
+      local_manager ? local_manager.secondary_pool : nil
+    end
+
+    def secondary_pools
+      local_manager ? local_manager.secondary_pools : []
+    end
+
+    def tag_map
+      local_manager ? local_manager.tag_map : {}
+    end
+
+    def max_bson_size
+      if local_manager && local_manager.max_bson_size
+        local_manager.max_bson_size
+      else
+        Mongo::DEFAULT_MAX_BSON_SIZE
+      end
+    end
+
+    private
+
+    # Parse option hash
+    def setup(opts)
+      # Require a primary node to connect?
+      @require_primary = opts.fetch(:require_primary, true)
+
+      # Refresh
+      @refresh_mode = opts.fetch(:refresh_mode, false)
+      @refresh_interval = opts.fetch(:refresh_interval, 90)
+
+      if @refresh_mode && @refresh_interval < 60
+        @refresh_interval = 60 unless ENV['TEST_MODE'] = 'TRUE'
+      end
+
+      if @refresh_mode == :async
+        warn ":async refresh mode has been deprecated. Refresh
+        mode will be disabled."
+      elsif ![:sync, false].include?(@refresh_mode)
+        raise MongoArgumentError,
+          "Refresh mode must be either :sync or false."
+      end
+
+      # Are we allowing reads from secondaries?
+      if opts[:read_secondary]
+        warn ":read_secondary options has now been deprecated and will " +
+          "be removed in driver v2.0. Use the :read option instead."
+        @read_secondary = opts.fetch(:read_secondary, false)
+        @read = :secondary
+      else
+        @read = opts.fetch(:read, :primary)
+        Mongo::Support.validate_read_preference(@read)
+      end
+
+      # Replica set name
+      if opts[:rs_name]
+        warn ":rs_name option has been deprecated and will be removed in v2.0. " +
+          "Please use :name instead."
+        @replica_set_name = opts[:rs_name]
+      else
+        @replica_set_name = opts[:name]
+      end
+
+      opts[:connect_timeout] = opts[:connect_timeout] || 30
+
+      super opts
+    end
+
+    # Checkout a socket connected to a node with one of
+    # the provided tags. If no such node exists, raise
+    # an exception.
+    #
+    # NOTE: will be available in driver release v2.0.
+    def checkout_tagged(tags)
+      tags.each do |k, v|
+        pool = self.tag_map[{k.to_s => v}]
+        if pool
+          socket = pool.checkout
+          return socket
+        end
+      end
+
+      raise NodeWithTagsNotFound,
+        "Could not find a connection tagged with #{tags}."
+    end
+    
+    def prune_managers
+      @old_managers.each do |manager|
+        if manager != @manager
+          if manager.closed?
+            @old_managers.delete(manager)
+          else
+            manager.close(:soft => true)
+          end
+        end
+      end
+    end
+
+    def sync_refresh
+      if @refresh_mode == :sync &&
+        ((Time.now - @last_refresh) > @refresh_interval)
+        @last_refresh = Time.now
+        
+        if @refresh_mutex.try_lock
+          begin
+            refresh
+            prune_managers
+          ensure
+            @refresh_mutex.unlock
+          end
+        end
       end
     end
   end

lib/mongo/util/conversions.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

lib/mongo/util/core_ext.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -58,3 +58,48 @@ class String
   end
 
 end
+
+#:nodoc:
+class Class
+  def mongo_thread_local_accessor name, options = {}
+    m = Module.new
+    m.module_eval do
+      class_variable_set :"@@#{name}", Hash.new {|h,k| h[k] = options[:default] }
+    end
+    m.module_eval %{
+
+      def #{name}
+        @@#{name}[Thread.current.object_id]
+      end
+
+      def #{name}=(val)
+        @@#{name}[Thread.current.object_id] = val
+      end
+    }
+
+    class_eval do
+      include m
+      extend m
+    end
+  end
+end
+
+# Fix a bug in the interaction of
+# mutexes and timeouts in Ruby 1.9.
+# See https://jira.mongodb.org/browse/RUBY-364 for details.
+if RUBY_VERSION > '1.9'
+  class Mutex
+    def lock_with_hack
+      lock_without_hack
+      rescue ThreadError => e
+      if e.message != "deadlock; recursive locking"
+        raise
+      else
+        unlock
+        lock_without_hack
+      end
+    end
+      alias_method :lock_without_hack, :lock
+      alias_method :lock, :lock_with_hack
+  end
+end

lib/mongo/util/logging.rb

@@ -0,0 +1,53 @@
+module Mongo
+  module Logging
+
+    def write_logging_startup_message
+      log(:debug, "Logging level is currently :debug which could negatively impact " +
+          "client-side performance. You should set your logging level no lower than " +
+          ":info in production.")
+    end
+
+    # Log a message with the given level.
+    def log(level, msg)
+      return unless @logger
+      case level
+        when :fatal then
+          @logger.fatal "MONGODB [FATAL] #{msg}"
+        when :error then
+          @logger.error "MONGODB [ERROR] #{msg}"
+        when :warn then
+          @logger.warn "MONGODB [WARNING] #{msg}"
+        when :info then
+          @logger.info "MONGODB [INFO] #{msg}"
+        when :debug then
+          @logger.debug "MONGODB [DEBUG] #{msg}"
+        else
+          @logger.debug "MONGODB [DEBUG] #{msg}"
+      end
+    end
+
+    # Execute the block and log the operation described by name and payload.
+    def instrument(name, payload = {})
+      start_time = Time.now
+      res = yield
+      log_operation(name, payload, start_time)
+      res
+    end
+
+    protected
+
+    def log_operation(name, payload, start_time)
+      @logger && @logger.debug do
+        msg = "MONGODB "
+        msg << "(#{((Time.now - start_time) * 1000).to_i}ms) "
+        msg << "#{payload[:database]}['#{payload[:collection]}'].#{name}("
+        msg << payload.values_at(:selector, :document, :documents, :fields ).compact.map(&:inspect).join(', ') + ")"
+        msg << ".skip(#{payload[:skip]})"   if payload[:skip]
+        msg << ".limit(#{payload[:limit]})" if payload[:limit]
+        msg << ".sort(#{payload[:order]})"  if payload[:order]
+        msg
+      end
+    end
+
+  end
+end

lib/mongo/util/node.rb

@@ -0,0 +1,187 @@
+module Mongo
+  class Node
+
+    attr_accessor :host, :port, :address, :config, :connection, :socket,
+      :last_state
+
+    def initialize(connection, data)
+      @connection = connection
+      if data.is_a?(String)
+        @host, @port = split_nodes(data)
+      else
+        @host = data[0]
+        @port = data[1].nil? ? Connection::DEFAULT_PORT : data[1].to_i
+      end
+      @address = "#{host}:#{port}"
+      @config = nil
+      @socket = nil
+    end
+
+    def eql?(other)
+      other.is_a?(Node) && host == other.host && port == other.port
+    end
+    alias :== :eql?
+
+    def host_string
+      address
+    end
+
+    def inspect
+      "<Mongo::Node:0x#{self.object_id.to_s(16)} @host=#{@host} @port=#{@port}>"
+    end
+
+    # Create a connection to the provided node,
+    # and, if successful, return the socket. Otherwise,
+    # return nil.
+    def connect
+      begin
+        socket = nil
+        socket = @connection.socket_class.new(@host, @port, 
+          @connection.op_timeout, @connection.connect_timeout
+        )
+
+        return nil if socket.nil?
+      rescue OperationTimeout, ConnectionFailure, OperationFailure, SocketError, SystemCallError, IOError => ex
+        @connection.log(:debug, "Failed connection to #{host_string} with #{ex.class}, #{ex.message}.")
+        socket.close if socket
+        return nil
+      end
+
+      @socket = socket
+    end
+
+    def close
+      if @socket && !@socket.closed?
+        @socket.close
+      end
+      @socket = nil
+      @config = nil
+    end
+
+    def connected?
+      @socket != nil
+    end
+
+    def active?
+      begin
+        result = @connection['admin'].command({:ping => 1}, :socket => @socket)
+        return result['ok'] == 1
+      rescue OperationFailure, SocketError, SystemCallError, IOError
+        return nil
+      end
+    end
+
+    # Get the configuration for the provided node as returned by the
+    # ismaster command. Additionally, check that the replica set name
+    # matches with the name provided.
+    def set_config
+      begin
+        @config = @connection['admin'].command({:ismaster => 1}, :socket => @socket)
+
+        if @config['msg'] && @logger
+          @connection.log(:warn, "#{config['msg']}")
+        end
+
+        check_set_membership(config)
+        check_set_name(config)
+      rescue ConnectionFailure, OperationFailure, OperationTimeout, SocketError, SystemCallError, IOError => ex
+        @connection.log(:warn, "Attempted connection to node #{host_string} raised " +
+                            "#{ex.class}: #{ex.message}")
+
+        # Socket may already be nil from issuing command
+        if @socket && !@socket.closed?
+          @socket.close
+        end
+
+        return nil
+      end
+
+      @config
+    end
+
+    # Return a list of replica set nodes from the config.
+    # Note: this excludes arbiters.
+    def node_list
+      connect unless connected?
+      set_config unless @config
+
+      return [] unless config
+
+      nodes = []
+      nodes += config['hosts'] if config['hosts']
+      nodes += config['passives'] if config['passives']
+      nodes
+    end
+
+    def arbiters
+      connect unless connected?
+      set_config unless @config
+      return [] unless config['arbiters']
+
+      config['arbiters'].map do |arbiter|
+        split_nodes(arbiter)
+      end
+    end
+
+    def tags
+      connect unless connected?
+      set_config unless @config
+      return {} unless config['tags'] && !config['tags'].empty?
+
+      config['tags']
+    end
+
+    def primary?
+      @config['ismaster'] == true || @config['ismaster'] == 1
+    end
+
+    def secondary?
+      @config['secondary'] == true || @config['secondary'] == 1
+    end
+
+    def host_port
+      [@host, @port]
+    end
+
+    def hash
+      address.hash
+    end
+
+    private
+
+    def split_nodes(host_string)
+      data = host_string.split(":")
+      host = data[0]
+      port = data[1].nil? ? Connection::DEFAULT_PORT : data[1].to_i
+
+      [host, port]
+    end
+
+    # Ensure that this node is a healty member of a replica set.
+    def check_set_membership(config)
+      if !config['hosts']
+        message = "Will not connect to #{host_string} because it's not a member " +
+          "of a replica set."
+        raise ConnectionFailure, message
+      elsif config['hosts'].length == 1 && !config['ismaster'] &&
+        !config['secondary']
+        message = "Attempting to connect to an unhealthy, single-node replica set."
+        raise ConnectionFailure, message
+      end
+    end
+
+    # Ensure that this node is part of a replica set of the expected name.
+    def check_set_name(config)
+      if @connection.replica_set_name
+        if !config['setName']
+          @connection.log(:warn, "Could not verify replica set name for member #{host_string} " +
+            "because ismaster does not return name in this version of MongoDB")
+        elsif @connection.replica_set_name != config['setName']
+          message = "Attempting to connect to replica set '#{config['setName']}' on member #{host_string} " +
+            "but expected '#{@connection.replica_set_name}'"
+          raise ReplicaSetConnectionError, message
+        end
+      end
+    end
+  end
+end

lib/mongo/util/pool.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,19 +17,28 @@
 
 module Mongo
   class Pool
+    PING_ATTEMPTS  = 6
+    MAX_PING_TIME  = 1_000_000
+    PRUNE_INTERVAL = 10_000
 
-    attr_accessor :host, :port, :size, :timeout, :safe, :checked_out
+    attr_accessor :host, :port, :address,
+      :size, :timeout, :safe, :checked_out, :connection
 
     # Create a new pool of connections.
-    #
     def initialize(connection, host, port, opts={})
       @connection  = connection
 
       @host, @port = host, port
 
+      # A Mongo::Node object.
+      @node = opts[:node]
+
+      # The string address
+      @address = "#{@host}:#{@port}"
+
       # Pool size and timeout.
-      @size      = opts[:size] || 1
+      @size    = opts.fetch(:size, 20)
-      @timeout   = opts[:timeout]   || 5.0
+      @timeout = opts.fetch(:timeout, 30)
 
       # Mutex for synchronizing pool access
       @connection_mutex = Mutex.new
@@ -37,29 +46,106 @@ module Mongo
       # Condition variable for signal and wait
       @queue = ConditionVariable.new
 
+      # Operations to perform on a socket
+      @socket_ops = Hash.new { |h, k| h[k] = [] }
+
       @sockets      = []
+      @pids         = {}
       @checked_out  = []
+      @ping_time    = nil
+      @last_ping    = nil
+      @closed       = false
+      @threads_to_sockets = {}
+      @checkout_counter   = 0
     end
 
-    def close
+    # Close this pool.
-      @sockets.each do |sock|
+    #
-        begin
+    # @option opts [Boolean] :soft (false) If true,
-          sock.close
+    #   close only those sockets that are not checked out.
-        rescue IOError => ex
+    def close(opts={})
-          warn "IOError when attempting to close socket connected "
+      @connection_mutex.synchronize do
-           + "to #{@host}:#{@port}: #{ex.inspect}"
+        if opts[:soft] && !@checked_out.empty?
+          @closing = true
+          close_sockets(@sockets - @checked_out)
+        else
+          close_sockets(@sockets)
+          @closed = true
         end
       end
-      @host = @port = nil
+    end
-      @sockets.clear
+
-      @checked_out.clear
+    def closed?
+      @closed
+    end
+
+    def inspect
+      "#<Mongo::Pool:0x#{self.object_id.to_s(16)} @host=#{@host} @port=#{port} " +
+        "@ping_time=#{@ping_time} #{@checked_out.size}/#{@size} sockets available.>"
+    end
+
+    def host_string
+      "#{@host}:#{@port}"
+    end
+
+    def host_port
+      [@host, @port]
+    end
+
+    # Refresh ping time only if we haven't
+    # checked within the last five minutes.
+    def ping_time
+      if !@last_ping
+        @last_ping = Time.now
+        @ping_time = refresh_ping_time
+      elsif Time.now - @last_ping > 300
+        @last_ping = Time.now
+        @ping_time = refresh_ping_time
+      else
+        @ping_time
+      end
+    end
+
+    # Return the time it takes on average
+    # to do a round-trip against this node.
+    def refresh_ping_time
+      trials = []
+      PING_ATTEMPTS.times do
+        t1 = Time.now
+        if !self.ping
+          return MAX_PING_TIME
+        end
+        trials << (Time.now - t1) * 1000
+      end
+
+      trials.sort!
+
+      # Delete shortest and longest times
+      trials.delete_at(trials.length-1)
+      trials.delete_at(0)
+
+      total = 0.0
+      trials.each { |t| total += t }
+
+      (total / trials.length).ceil
+    end
+
+    def ping
+      begin
+        return self.connection['admin'].command({:ping => 1}, :socket => @node.socket)
+      rescue OperationFailure, SocketError, SystemCallError, IOError
+        return false
+      end
     end
 
     # Return a socket to the pool.
     def checkin(socket)
       @connection_mutex.synchronize do
-        @checked_out.delete(socket)
+        if @checked_out.delete(socket)
-        @queue.signal
+          @queue.signal
+        else
+          return false
+        end
       end
       true
     end
@@ -70,24 +156,83 @@ module Mongo
     # therefore, it runs within a mutex.
     def checkout_new_socket
       begin
-      socket = TCPSocket.new(@host, @port)
+        socket = @connection.socket_class.new(@host, @port, @connection.op_timeout)
-      socket.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
+        socket.pool = self
       rescue => ex
-        raise ConnectionFailure, "Failed to connect socket: #{ex}"
+        socket.close if socket
+        raise ConnectionFailure, "Failed to connect to host #{@host} and port #{@port}: #{ex}"
+        @node.close if @node
       end
+
+      # If any saved authentications exist, we want to apply those
+      # when creating new sockets.
+      @connection.apply_saved_authentication(:socket => socket)
+
       @sockets << socket
+      @pids[socket] = Process.pid
       @checked_out << socket
+      @threads_to_sockets[Thread.current] = socket
       socket
     end
 
+    # If a user calls DB#authenticate, and several sockets exist,
+    # then we need a way to apply the authentication on each socket.
+    # So we store the apply_authentication method, and this will be
+    # applied right before the next use of each socket.
+    def authenticate_existing
+      @connection_mutex.synchronize do
+        @sockets.each do |socket|
+          @socket_ops[socket] << Proc.new do
+            @connection.apply_saved_authentication(:socket => socket)
+          end
+        end
+      end
+    end
+
+    # Store the logout op for each existing socket to be applied before
+    # the next use of each socket.
+    def logout_existing(db)
+      @connection_mutex.synchronize do
+        @sockets.each do |socket|
+          @socket_ops[socket] << Proc.new do
+            @connection.db(db).issue_logout(:socket => socket)
+          end
+        end
+      end
+    end
+
     # Checks out the first available socket from the pool.
     #
+    # If the pid has changed, remove the socket and check out
+    # new one.
+    #
     # This method is called exclusively from #checkout;
     # therefore, it runs within a mutex.
-    def checkout_existing_socket
+    def checkout_existing_socket(socket=nil)
-      socket = (@sockets - @checked_out).first
+      if !socket
-      @checked_out << socket
+        socket = (@sockets - @checked_out).first
-      socket
+      end
+
+      if @pids[socket] != Process.pid
+        @pids[socket] = nil
+        @sockets.delete(socket)
+        if socket
+          socket.close unless socket.closed?
+        end
+        checkout_new_socket
+      else
+        @checked_out << socket
+        @threads_to_sockets[Thread.current] = socket
+        socket
+      end
+    end
+
+    def prune_thread_socket_hash
+      current_threads = Set[*Thread.list]
+
+      @threads_to_sockets.delete_if do |thread, socket|
+        !current_threads.include?(thread)
+      end
     end
 
     # Check out an existing socket or create a new socket if the maximum
@@ -98,28 +243,75 @@ module Mongo
       start_time = Time.now
       loop do
         if (Time.now - start_time) > @timeout
-            raise ConnectionTimeoutError, "could not obtain connection within " +
+          raise ConnectionTimeoutError, "could not obtain connection within " +
-              "#{@timeout} seconds. The max pool size is currently #{@size}; " +
+            "#{@timeout} seconds. The max pool size is currently #{@size}; " +
-              "consider increasing the pool size or timeout."
+            "consider increasing the pool size or timeout."
         end
 
         @connection_mutex.synchronize do
-          socket = if @checked_out.size < @sockets.size
+          if @checkout_counter > PRUNE_INTERVAL
-                     checkout_existing_socket
+            @checkout_counter = 0
-                   elsif @sockets.size < @size
+            prune_thread_socket_hash
-                     checkout_new_socket
+          else
-                   end
+            @checkout_counter += 1
-
+          end
-          return socket if socket
+
-
+          if socket_for_thread = @threads_to_sockets[Thread.current]
-          # Otherwise, wait
+            if !@checked_out.include?(socket_for_thread)
-          if @logger
+              socket = checkout_existing_socket(socket_for_thread)
-            @logger.warn "MONGODB Waiting for available connection; " +
+            end
-              "#{@checked_out.size} of #{@size} connections checked out."
+          else # First checkout for this thread
+            thread_length = @threads_to_sockets.keys.length
+            if (thread_length <= @sockets.size) && (@sockets.size < @size)
+              socket = checkout_new_socket
+            elsif @checked_out.size < @sockets.size
+              socket = checkout_existing_socket
+            elsif @sockets.size < @size
+              socket = checkout_new_socket
+            end
+          end
+
+          if socket
+            # This calls all procs, in order, scoped to existing sockets.
+            # At the moment, we use this to lazily authenticate and
+            # logout existing socket connections.
+            @socket_ops[socket].reject! do |op|
+              op.call
+            end
+
+            if socket.closed?
+              @checked_out.delete(socket)
+              @sockets.delete(socket)
+              @threads_to_sockets.each do |k,v|
+                if v == socket
+                  @threads_to_sockets.delete(k)
+                end
+              end
+
+              socket = checkout_new_socket
+            end
+            
+            return socket
+          else
+            # Otherwise, wait
+            @queue.wait(@connection_mutex)
           end
-          @queue.wait(@connection_mutex)
         end
       end
     end
+
+    private
+
+    def close_sockets(sockets)
+      sockets.each do |socket|
+        @sockets.delete(socket)
+        begin
+          socket.close unless socket.closed?
+        rescue IOError => ex
+          warn "IOError when attempting to close socket connected to #{@host}:#{@port}: #{ex.inspect}"
+        end
+      end
+    end
+
   end
 end

lib/mongo/util/pool_manager.rb

@@ -0,0 +1,305 @@
+module Mongo
+  class PoolManager
+
+    attr_reader :connection, :arbiters, :primary, :secondaries, :primary_pool,
+      :read_pool, :secondary_pool, :secondary_pools, :hosts, :nodes,
+      :max_bson_size, :tags_to_pools, :tag_map, :members
+
+    # Create a new set of connection pools.
+    #
+    # The pool manager will by default use the original seed list passed
+    # to the connection objects, accessible via connection.seeds. In addition,
+    # the user may pass an additional list of seeds nodes discovered in real
+    # time. The union of these lists will be used when attempting to connect,
+    # with the newly-discovered nodes being used first.
+    def initialize(connection, seeds=[])
+      @connection = connection
+      @original_seeds = connection.seeds
+      @seeds = seeds
+      @previously_connected = false
+    end
+
+    def inspect
+      "<Mongo::PoolManager:0x#{self.object_id.to_s(16)} @seeds=#{@seeds}>"
+    end
+
+    def connect
+      close if @previously_connected
+
+      initialize_data
+      members = connect_to_members
+      initialize_pools(members)
+      cache_discovered_seeds(members)
+      set_read_pool
+      set_tag_mappings
+
+      @members = members
+      @previously_connected = true
+    end
+
+    # We're healthy if all members are pingable and if the view
+    # of the replica set returned by isMaster is equivalent
+    # to our view. If any of these isn't the case,
+    # set @refresh_required to true, and return.
+    def check_connection_health
+      begin
+        seed = get_valid_seed_node
+      rescue ConnectionFailure
+        @refresh_required = true
+        return
+      end
+
+      config = seed.set_config
+      if !config
+        @refresh_required = true
+        seed.close
+        return
+      end
+
+      if config['hosts'].length != @members.length
+        @refresh_required = true
+        seed.close
+        return
+      end
+
+      config['hosts'].each do |host|
+        member = @members.detect do |m|
+          m.address == host
+        end
+
+        if member && validate_existing_member(member)
+          next
+        else
+          @refresh_required = true
+          seed.close
+          return false
+        end
+      end
+
+      seed.close
+    end
+
+    # The replica set connection should initiate a full refresh.
+    def refresh_required?
+      @refresh_required
+    end
+
+    def closed?
+      pools.all? { |pool| pool.closed? }
+    end
+
+    def close(opts={})
+      begin
+        if @primary_pool
+          @primary_pool.close(opts)
+        end
+
+        if @secondary_pools
+          @secondary_pools.each do |pool|
+            pool.close(opts)
+          end
+        end
+
+        if @members
+          @members.each do |member|
+            member.close
+          end
+        end
+
+        rescue ConnectionFailure
+      end
+    end
+
+    # The set of nodes that this class has discovered and
+    # successfully connected to.
+    def seeds
+      @seeds || []
+    end
+
+    private
+
+    def pools
+      [@primary_pool, *@secondary_pools]
+    end
+
+    def validate_existing_member(member)
+      config = member.set_config
+      if !config
+        return false
+      else
+        if member.primary?
+          if member.last_state == :primary
+            return true
+          else # This node is now primary, but didn't used to be.
+            return false
+          end
+        elsif member.last_state == :secondary &&
+          member.secondary?
+          return true
+        else # This node isn't what it used to be.
+          return false
+        end
+      end
+    end
+
+    def initialize_data
+      @primary = nil
+      @primary_pool = nil
+      @read_pool = nil
+      @arbiters = []
+      @secondaries = []
+      @secondary_pool = nil
+      @secondary_pools = []
+      @hosts = Set.new
+      @members = Set.new
+      @tags_to_pools = {}
+      @tag_map = {}
+      @refresh_required = false
+    end
+
+    # Connect to each member of the replica set
+    # as reported by the given seed node, and return
+    # as a list of Mongo::Node objects.
+    def connect_to_members
+      members = []
+
+      seed = get_valid_seed_node
+
+      seed.node_list.each do |host|
+        node = Mongo::Node.new(self.connection, host)
+        if node.connect && node.set_config
+          members << node
+        end
+      end
+      seed.close
+
+      if members.empty?
+        raise ConnectionFailure, "Failed to connect to any given member."
+      end
+
+      members
+    end
+
+    def associate_tags_with_pool(tags, pool)
+      tags.each_key do |key|
+        @tags_to_pools[{key => tags[key]}] ||= []
+        @tags_to_pools[{key => tags[key]}] << pool
+      end
+    end
+
+    # Initialize the connection pools for the primary and secondary nodes.
+    def initialize_pools(members)
+      members.each do |member|
+        @hosts << member.host_string
+
+        if member.primary?
+          assign_primary(member)
+        elsif member.secondary? && !@secondaries.include?(member.host_port)
+          assign_secondary(member)
+        end
+      end
+
+      @max_bson_size = members.first.config['maxBsonObjectSize'] ||
+        Mongo::DEFAULT_MAX_BSON_SIZE
+      @arbiters = members.first.arbiters
+    end
+
+    def assign_primary(member)
+      member.last_state = :primary
+      @primary = member.host_port
+      @primary_pool = Pool.new(self.connection, member.host, member.port,
+                              :size => self.connection.pool_size,
+                              :timeout => self.connection.pool_timeout,
+                              :node => member)
+      associate_tags_with_pool(member.tags, @primary_pool)
+    end
+
+    def assign_secondary(member)
+      member.last_state = :secondary
+      @secondaries << member.host_port
+      pool = Pool.new(self.connection, member.host, member.port,
+                                   :size => self.connection.pool_size,
+                                   :timeout => self.connection.pool_timeout,
+                                   :node => member)
+      @secondary_pools << pool
+      associate_tags_with_pool(member.tags, pool)
+    end
+
+    # If there's more than one pool associated with
+    # a given tag, choose a close one using the bucket method.
+    def set_tag_mappings
+      @tags_to_pools.each do |key, pool_list|
+        if pool_list.length == 1
+          @tag_map[key] = pool_list.first
+        else
+          @tag_map[key] = nearby_pool_from_set(pool_list)
+        end
+      end
+    end
+
+    # Pick a node from the set of possible secondaries.
+    # If more than one node is available, use the ping
+    # time to figure out which nodes to choose from.
+    def set_read_pool
+      if @secondary_pools.empty?
+        @read_pool = @primary_pool
+      elsif @secondary_pools.size == 1
+        @read_pool = @secondary_pools[0]
+        @secondary_pool = @read_pool
+      else
+        @read_pool = nearby_pool_from_set(@secondary_pools)
+        @secondary_pool = @read_pool
+      end
+    end
+
+    def nearby_pool_from_set(pool_set)
+      ping_ranges = Array.new(3) { |i| Array.new }
+        pool_set.each do |pool|
+          case pool.ping_time
+            when 0..150
+              ping_ranges[0] << pool
+            when 150..1000
+              ping_ranges[1] << pool
+            else
+              ping_ranges[2] << pool
+          end
+        end
+
+        for list in ping_ranges do
+          break if !list.empty?
+        end
+
+      list[rand(list.length)]
+    end
+
+    # Iterate through the list of provided seed
+    # nodes until we've gotten a response from the
+    # replica set we're trying to connect to.
+    #
+    # If we don't get a response, raise an exception.
+    def get_valid_seed_node
+      seed_list.each do |seed|
+        node = Mongo::Node.new(self.connection, seed)
+        if !node.connect
+          next
+        elsif node.set_config
+          return node
+        else
+          node.close
+        end
+      end
+
+      raise ConnectionFailure, "Cannot connect to a replica set using seeds " +
+        "#{seed_list.map {|s| "#{s[0]}:#{s[1]}" }.join(', ')}"
+    end
+
+    def seed_list
+      @seeds | @original_seeds
+    end
+
+    def cache_discovered_seeds(members)
+      @seeds = members.map { |n| n.host_port }
+    end
+
+  end
+end

lib/mongo/util/server_version.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

lib/mongo/util/ssl_socket.rb

@@ -0,0 +1,63 @@
+require 'socket'
+require 'openssl'
+require 'timeout'
+
+module Mongo
+
+  # A basic wrapper over Ruby's SSLSocket that initiates
+  # a TCP connection over SSL and then provides an basic interface
+  # mirroring Ruby's TCPSocket, vis., TCPSocket#send and TCPSocket#read.
+  class SSLSocket
+
+    attr_accessor :pool
+
+    def initialize(host, port, op_timeout=nil, connect_timeout=nil)
+      @op_timeout = op_timeout
+      @connect_timeout = connect_timeout
+
+      @socket = ::TCPSocket.new(host, port)
+      @socket.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
+
+      @ssl = OpenSSL::SSL::SSLSocket.new(@socket)
+      @ssl.sync_close = true
+      
+      connect
+    end
+
+    def connect
+      if @connect_timeout
+        Timeout::timeout(@connect_timeout, ConnectionTimeoutError) do
+          @ssl.connect
+        end
+      else
+        @ssl.connect
+      end
+    end
+
+    def send(data)
+      @ssl.syswrite(data)
+    end
+
+    def read(length, buffer)
+      if @op_timeout
+        Timeout::timeout(@op_timeout, OperationTimeout) do
+          @ssl.sysread(length, buffer)
+        end
+      else
+        @ssl.sysread(length, buffer)
+      end 
+    end
+
+    def setsockopt(key, value, n)
+      @ssl.setsockopt(key, value, n)
+    end
+
+    def close
+      @ssl.close
+    end
+
+    def closed?
+      @ssl.closed?
+    end
+  end
+end

lib/mongo/util/support.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -44,7 +44,6 @@ module Mongo
       Digest::MD5.hexdigest("#{username}:mongo:#{plaintext}")
     end
 
-
     def validate_db_name(db_name)
       unless [String, Symbol].include?(db_name.class)
         raise TypeError, "db_name must be a string or symbol"
@@ -59,6 +58,15 @@ module Mongo
       db_name
     end
 
+    def validate_read_preference(value)
+      if [:primary, :secondary, :secondary_only, nil].include?(value)
+        return true
+      else
+        raise MongoArgumentError, "#{value} is not a valid read preference. " +
+          "Please specify either :primary or :secondary or :secondary_only."
+      end
+    end
+
     def format_order_clause(order)
       case order
         when String, Symbol then string_as_sort_parameters(order)

lib/mongo/util/tcp_socket.rb

@@ -0,0 +1,78 @@
+require 'socket'
+require 'timeout'
+
+module Mongo
+  # Wrapper class for Socket
+  #
+  # Emulates TCPSocket with operation and connection timeout
+  # sans Timeout::timeout
+  #
+  class TCPSocket
+    attr_accessor :pool
+
+    def initialize(host, port, op_timeout=nil, connect_timeout=nil)
+      @op_timeout = op_timeout 
+      @connect_timeout = connect_timeout
+
+      # TODO: Prefer ipv6 if server is ipv6 enabled
+      @host = Socket.getaddrinfo(host, nil, Socket::AF_INET).first[3]
+      @port = port
+
+      @socket_address = Socket.pack_sockaddr_in(@port, @host)
+      @socket = Socket.new(Socket::AF_INET, Socket::SOCK_STREAM, 0)
+      @socket.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
+
+      connect
+    end
+
+    def connect
+      if @connect_timeout
+        Timeout::timeout(@connect_timeout, OperationTimeout) do
+          @socket.connect(@socket_address)
+        end
+      else
+        @socket.connect(@socket_address)
+      end
+    end
+
+    def send(data)
+      @socket.write(data)
+    end
+
+    def read(maxlen, buffer)
+      # Block on data to read for @op_timeout seconds
+      begin
+        ready = IO.select([@socket], nil, [@socket], @op_timeout)
+      rescue IOError
+        raise OperationFailure
+      end
+      if ready
+        begin
+          @socket.sysread(maxlen, buffer)
+        rescue SystemCallError => ex
+          # Needed because sometimes JRUBY doesn't throw Errno::ECONNRESET as it should
+          # http://jira.codehaus.org/browse/JRUBY-6180
+          raise ConnectionFailure, ex
+        rescue Errno::ENOTCONN, Errno::EBADF, Errno::ECONNRESET, Errno::EPIPE, Errno::ETIMEDOUT, EOFError => ex
+          raise ConnectionFailure, ex
+        rescue Errno::EINTR, Errno::EIO, IOError => ex
+          raise OperationFailure, ex
+        end
+      else
+        raise OperationTimeout
+      end
+    end
+
+    def setsockopt(key, value, n)
+      @socket.setsockopt(key, value, n)
+    end
+
+    def close
+      @socket.close
+    end
+
+    def closed?
+      @socket.closed?
+    end
+  end
+end

lib/mongo/util/uri_parser.rb

@@ -1,7 +1,7 @@
 # encoding: UTF-8
 
 # --
-# Copyright (C) 2008-2010 10gen Inc.
+# Copyright (C) 2008-2011 10gen Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,73 +16,160 @@
 # limitations under the License.
 # ++
 
+require 'cgi'
+
 module Mongo
   class URIParser
 
-    DEFAULT_PORT = 27017
+    USER_REGEX = /([-.\w:]+)/
-    MONGODB_URI_MATCHER = /(([-_.\w\d]+):([-_\w\d]+)@)?([-.\w\d]+)(:([\w\d]+))?(\/([-\d\w]+))?/
+    PASS_REGEX = /([^@,]+)/
-    MONGODB_URI_SPEC = "mongodb://[username:password@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/database]"
+    AUTH_REGEX = /(#{USER_REGEX}:#{PASS_REGEX}@)?/
+
+    HOST_REGEX = /([-.\w]+)/
+    PORT_REGEX = /(?::(\w+))?/
+    NODE_REGEX = /((#{HOST_REGEX}#{PORT_REGEX},?)+)/
+
+    PATH_REGEX = /(?:\/([-\w]+))?/
+
+    MONGODB_URI_MATCHER = /#{AUTH_REGEX}#{NODE_REGEX}#{PATH_REGEX}/
+    MONGODB_URI_SPEC = "mongodb://[username:password@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database][?options]]"
+
     SPEC_ATTRS = [:nodes, :auths]
-    OPT_ATTRS  = [:connect, :replicaset, :slaveok, :safe, :w, :wtimeout, :fsync]
+    OPT_ATTRS  = [:connect, :replicaset, :slaveok, :safe, :w, :wtimeout, :fsync, :journal, :connecttimeoutms, :sockettimeoutms, :wtimeoutms]
 
-    OPT_VALID  = {:connect    => lambda {|arg| ['direct', 'replicaset'].include?(arg)},
+    OPT_VALID  = {:connect          => lambda {|arg| ['direct', 'replicaset', 'true', 'false', true, false].include?(arg)},
-                  :replicaset => lambda {|arg| arg.length > 0},
+                  :replicaset       => lambda {|arg| arg.length > 0},
-                  :slaveok    => lambda {|arg| ['true', 'false'].include?(arg)},
+                  :slaveok          => lambda {|arg| ['true', 'false'].include?(arg)},
-                  :safe       => lambda {|arg| ['true', 'false'].include?(arg)},
+                  :safe             => lambda {|arg| ['true', 'false'].include?(arg)},
-                  :w          => lambda {|arg| arg =~ /^\d+$/ },
+                  :w                => lambda {|arg| arg =~ /^\d+$/ },
-                  :wtimeout   => lambda {|arg| arg =~ /^\d+$/ },
+                  :wtimeout         => lambda {|arg| arg =~ /^\d+$/ },
-                  :fsync      => lambda {|arg| ['true', 'false'].include?(arg)}
+                  :fsync            => lambda {|arg| ['true', 'false'].include?(arg)},
+                  :journal          => lambda {|arg| ['true', 'false'].include?(arg)},
+                  :connecttimeoutms => lambda {|arg| arg =~ /^\d+$/ },
+                  :sockettimeoutms  => lambda {|arg| arg =~ /^\d+$/ },
+                  :wtimeoutms       => lambda {|arg| arg =~ /^\d+$/ }
                  }
 
-    OPT_ERR    = {:connect    => "must be 'direct' or 'replicaset'",
+    OPT_ERR    = {:connect          => "must be 'direct', 'replicaset', 'true', or 'false'",
-                  :replicaset => "must be a string containing the name of the replica set to connect to",
+                  :replicaset       => "must be a string containing the name of the replica set to connect to",
-                  :slaveok    => "must be 'true' or 'false'",
+                  :slaveok          => "must be 'true' or 'false'",
-                  :safe       => "must be 'true' or 'false'",
+                  :safe             => "must be 'true' or 'false'",
-                  :w          => "must be an integer specifying number of nodes to replica to",
+                  :w                => "must be an integer specifying number of nodes to replica to",
-                  :wtimeout   => "must be an integer specifying milliseconds",
+                  :wtimeout         => "must be an integer specifying milliseconds",
-                  :fsync      => "must be 'true' or 'false'"
+                  :fsync            => "must be 'true' or 'false'",
+                  :journal          => "must be 'true' or 'false'",
+                  :connecttimeoutms => "must be an integer specifying milliseconds",
+                  :sockettimeoutms  => "must be an integer specifying milliseconds",
+                  :wtimeoutms       => "must be an integer specifying milliseconds"
                  }
 
-    OPT_CONV   = {:connect    => lambda {|arg| arg},
+    OPT_CONV   = {:connect          => lambda {|arg| arg == 'false' ? false : arg}, # be sure to convert 'false' to FalseClass
-                  :replicaset => lambda {|arg| arg},
+                  :replicaset       => lambda {|arg| arg},
-                  :slaveok    => lambda {|arg| arg == 'true' ? true : false},
+                  :slaveok          => lambda {|arg| arg == 'true' ? true : false},
-                  :safe       => lambda {|arg| arg == 'true' ? true : false},
+                  :safe             => lambda {|arg| arg == 'true' ? true : false},
-                  :w          => lambda {|arg| arg.to_i},
+                  :w                => lambda {|arg| arg.to_i},
-                  :wtimeout   => lambda {|arg| arg.to_i},
+                  :wtimeout         => lambda {|arg| arg.to_i},
-                  :fsync      => lambda {|arg| arg == 'true' ? true : false}
+                  :fsync            => lambda {|arg| arg == 'true' ? true : false},
+                  :journal          => lambda {|arg| arg == 'true' ? true : false},
+                  :connecttimeoutms => lambda {|arg| arg.to_f / 1000 }, # stored as seconds
+                  :sockettimeoutms  => lambda {|arg| arg.to_f / 1000 }, # stored as seconds
+                  :wtimeoutms       => lambda {|arg| arg.to_i }
                  }
 
-    attr_reader :nodes, :auths, :connect, :replicaset, :slaveok, :safe, :w, :wtimeout, :fsync
+    attr_reader :nodes, :auths, :connect, :replicaset, :slaveok, :safe, :w, :wtimeout, :fsync, :journal, :connecttimeoutms, :sockettimeoutms, :wtimeoutms
 
     # Parse a MongoDB URI. This method is used by Connection.from_uri.
     # Returns an array of nodes and an array of db authorizations, if applicable.
     #
+    # @note Passwords can contain any character except for ','
+    #
+    # @param [String] uri The MongoDB URI string.
+    # @param [Hash,nil] extra_opts Extra options. Will override anything already specified in the URI.
+    #
     # @core connections
-    def initialize(string)
+    def initialize(uri, extra_opts={})
-      if string =~ /^mongodb:\/\//
+      if uri.start_with?('mongodb://')
-        string = string[10..-1]
+        uri = uri[10..-1]
       else
         raise MongoArgumentError, "MongoDB URI must match this spec: #{MONGODB_URI_SPEC}"
       end
 
-      hosts, opts = string.split('?')
+      hosts, opts = uri.split('?')
       parse_hosts(hosts)
-      parse_options(opts)
+      parse_options(opts, extra_opts)
-      configure_connect
+      validate_connect
     end
 
+    # Create a Mongo::Connection or a Mongo::ReplSetConnection based on the URI.
+    #
+    # @note Don't confuse this with attribute getter method #connect.
+    #
+    # @return [Connection,ReplSetConnection]
+    def connection
+      if replicaset?
+        ReplSetConnection.new(*(nodes+[connection_options]))
+      else
+        Connection.new(host, port, connection_options)
+      end
+    end
+
+    # Whether this represents a replica set.
+    # @return [true,false]
+    def replicaset?
+      replicaset.is_a?(String) || nodes.length > 1
+    end
+
+    # Whether to immediately connect to the MongoDB node[s]. Defaults to true.
+    # @return [true, false]
+    def connect?
+      connect != false
+    end
+
+    # Whether this represents a direct connection.
+    #
+    # @note Specifying :connect => 'direct' has no effect... other than to raise an exception if other variables suggest a replicaset.
+    #
+    # @return [true,false]
+    def direct?
+      !replicaset?
+    end
+
+    # For direct connections, the host of the (only) node.
+    # @return [String]
+    def host
+      nodes[0][0]
+    end
+
+    # For direct connections, the port of the (only) node.
+    # @return [Integer]
+    def port
+      nodes[0][1].to_i
+    end
+
+    # Options that can be passed to Mongo::Connection.new or Mongo::ReplSetConnection.new
+    # @return [Hash]
     def connection_options
       opts = {}
 
-      if (@w || @wtimeout || @fsync) && !@safe
+      if (@w || @journal || @wtimeout || @fsync || @wtimeoutms) && !@safe
-        raise MongoArgumentError, "Safe must be true if w, wtimeout, or fsync is specified"
+        raise MongoArgumentError, "Safe must be true if w, journal, wtimeoutMS, or fsync is specified"
       end
 
       if @safe
-        if @w || @wtimeout || @fsync
+        if @w || @journal || @wtimeout || @fsync || @wtimeoutms
           safe_opts = {}
           safe_opts[:w] = @w if @w
-          safe_opts[:wtimeout] = @wtimeout if @wtimeout
+          safe_opts[:j] = @journal if @journal
+          
+          if @wtimeout
+            warn "Using wtimeout in a URI is deprecated, please use wtimeoutMS. It will be removed in v2.0."
+            safe_opts[:wtimeout] = @wtimeout
+          end
+          
+          if @wtimeoutms
+            safe_opts[:wtimeout] = @wtimeoutms
+          end
+          
           safe_opts[:fsync] = @fsync if @fsync
         else
           safe_opts = true
@@ -91,88 +178,118 @@ module Mongo
         opts[:safe] = safe_opts
       end
       
+      if @connecttimeoutms
+        opts[:connect_timeout] = @connecttimeoutms
+      end
+      
+      if @sockettimeoutms
+        opts[:op_timeout] = @sockettimeoutms
+      end
+
       if @slaveok
-        if @connect == 'direct'
+        if direct?
           opts[:slave_ok] = true
         else
-          opts[:read_secondary] = true
+          opts[:read] = :secondary
         end
       end
 
-      opts[:rs_name] = @replicaset if @replicaset
+      if direct?
+        opts[:auths] = auths
+      end
+
+      if replicaset.is_a?(String)
+        opts[:name] = replicaset
+      end
+
+      opts[:connect] = connect?
 
       opts
     end
 
     private
 
-    def parse_hosts(hosts)
+    def parse_hosts(uri_without_proto)
       @nodes = []
       @auths = []
-      specs = hosts.split(',')
-      specs.each do |spec|
-        matches  = MONGODB_URI_MATCHER.match(spec)
-        if !matches
-          raise MongoArgumentError, "MongoDB URI must match this spec: #{MONGODB_URI_SPEC}"
-        end
 
-        uname = matches[2]
+      matches = MONGODB_URI_MATCHER.match(uri_without_proto)
-        pwd   = matches[3]
+
-        host  = matches[4]
+      if !matches
-        port  = matches[6] || DEFAULT_PORT
+        raise MongoArgumentError, "MongoDB URI must match this spec: #{MONGODB_URI_SPEC}"
+      end
+
+      uname    = matches[2]
+      pwd      = matches[3]
+      hosturis = matches[4].split(',')
+      db       = matches[8]
+
+      hosturis.each do |hosturi|
+        # If port is present, use it, otherwise use default port
+        host, port = hosturi.split(':') + [Connection::DEFAULT_PORT]
+
         if !(port.to_s =~ /^\d+$/)
           raise MongoArgumentError, "Invalid port #{port}; port must be specified as digits."
         end
-        port    = port.to_i
-        db      = matches[8]
 
-        if uname && pwd && db
+        port = port.to_i
-          auths << {'db_name' => db, 'username' => uname, 'password' => pwd}
-        elsif uname || pwd || db
-          raise MongoArgumentError, "MongoDB URI must include all three of username, password, " +
-            "and db if any one of these is specified."
-        end
 
         @nodes << [host, port]
       end
+
+      if @nodes.empty?
+        raise MongoArgumentError, "No nodes specified. Please ensure that you've provided at least one node."
+      end
+
+      if uname && pwd && db
+        auths << {'db_name' => db, 'username' => uname, 'password' => pwd}
+      elsif uname || pwd
+        raise MongoArgumentError, "MongoDB URI must include username, password, "
+          "and db if username and password are specified."
+      end
+
+      # The auths are repeated for each host in a replica set
+      @auths *= hosturis.length
     end
 
     # This method uses the lambdas defined in OPT_VALID and OPT_CONV to validate
     # and convert the given options.
-    def parse_options(opts)
+    def parse_options(string_opts, extra_opts={})
-      return unless opts
+      # initialize instance variables for available options
-      separator = opts.include?('&') ? '&' : ';'
+      OPT_VALID.keys.each { |k| instance_variable_set("@#{k}", nil) }
-      opts.split(separator).each do |attr|
+
-        key, value = attr.split('=')
+      string_opts ||= ''
-        key   = key.to_sym
+
-        value = value.strip.downcase
+      return if string_opts.empty? && extra_opts.empty?
+
+      if string_opts.include?(';') and string_opts.include?('&')
+        raise MongoArgumentError, "must not mix URL separators ; and &"
+      end
+
+      opts = CGI.parse(string_opts).inject({}) do |memo, (key, value)|
+        value = value.first
+        memo[key.downcase.to_sym] = value.strip.downcase
+        memo
+      end
+
+      opts.merge! extra_opts
+
+      opts.each do |key, value|
         if !OPT_ATTRS.include?(key)
           raise MongoArgumentError, "Invalid Mongo URI option #{key}"
         end
-
         if OPT_VALID[key].call(value)
           instance_variable_set("@#{key}", OPT_CONV[key].call(value))
         else
-          raise MongoArgumentError, "Invalid value for #{key}: #{OPT_ERR[key]}"
+          raise MongoArgumentError, "Invalid value #{value.inspect} for #{key}: #{OPT_ERR[key]}"
         end
       end
     end
 
-    def configure_connect
+    def validate_connect
-      if @nodes.length > 1 && !@connect
+      if replicaset? and @connect == 'direct'
-        @connect = 'replicaset'
+        # Make sure the user doesn't specify something contradictory
-      end
+        raise MongoArgumentError, "connect=direct conflicts with setting a replicaset name"
-
-      if !@connect
-        if @nodes.length > 1
-          @connect = 'replicaset'
-        else
-          @connect = 'direct'
-        end
-      end
-
-      if @connect == 'direct' && @replicaset
-        raise MongoArgumentError, "If specifying a replica set name, please also specify that connect=replicaset"
       end
     end
   end

lib/mongo/version.rb

@@ -0,0 +1,3 @@
+module Mongo
+  VERSION = "1.6.2"
+end

mongo.gemspec

@@ -1,4 +1,4 @@
-require "./lib/mongo"
+require File.expand_path('../lib/mongo/version', __FILE__)
 
 Gem::Specification.new do |s|
   s.name = 'mongo'
@@ -6,7 +6,7 @@ Gem::Specification.new do |s|
   s.version = Mongo::VERSION
 
   s.platform = Gem::Platform::RUBY
-  s.summary = 'Ruby driver for the MongoDB'
+  s.summary = 'Ruby driver for MongoDB'
   s.description = 'A Ruby driver for MongoDB. For more information about Mongo, see http://www.mongodb.org.'
 
   s.require_paths = ['lib']
@@ -26,9 +26,9 @@ Gem::Specification.new do |s|
   s.rdoc_options = ['--main', 'README.md', '--inline-source']
   s.extra_rdoc_files = ['README.md']
 
-  s.authors = ['Jim Menard', 'Mike Dirolf', 'Kyle Banker']
+  s.authors = ['Jim Menard', 'Mike Dirolf', 'Kyle Banker', 'Tyler Brock']
   s.email = 'mongodb-dev@googlegroups.com'
   s.homepage = 'http://www.mongodb.org'
 
-  s.add_dependency(%q<bson>, [">= #{Mongo::VERSION}"])
+  s.add_dependency('bson', "~> #{Mongo::VERSION}")
 end

test/auxillary/1.4_features.rb

@@ -1,7 +1,7 @@
 $:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 require 'mongo'
 require 'test/unit'
-require './test/test_helper'
+require File.expand_path("../../test_helper", __FILE__)
 
 # Demonstrate features in MongoDB 1.4
 class Features14Test < Test::Unit::TestCase

test/auxillary/authentication_test.rb

@@ -1,7 +1,7 @@
 $:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 require 'mongo'
 require 'test/unit'
-require './test/test_helper'
+require File.expand_path("../../test_helper", __FILE__)
 
 # NOTE: This test requires bouncing the server.
 # It also requires that a user exists on the admin database.
@@ -26,6 +26,7 @@ class AuthenticationTest < Test::Unit::TestCase
     @admin.authenticate('bob', 'secret')
     @db1.add_user('user1', 'secret')
     @db2.add_user('user2', 'secret')
+    @db2.add_user('userRO', 'secret', true) # read-only
     @admin.logout
 
     assert_raise Mongo::OperationFailure do
@@ -53,6 +54,7 @@ class AuthenticationTest < Test::Unit::TestCase
 
     assert @db1['stuff'].insert({:a => 2}, :safe => true)
     assert @db2['stuff'].insert({:a => 2}, :safe => true)
+    assert @db2['stuff'].find(:safe => true)
 
     @db1.logout
     assert_raise Mongo::OperationFailure do
@@ -63,6 +65,12 @@ class AuthenticationTest < Test::Unit::TestCase
     assert_raise Mongo::OperationFailure do
       assert @db2['stuff'].insert({:a => 2}, :safe => true)
     end
+
+    @db2.authenticate('userRO', 'secret')
+    assert @db2['stuff'].find(:safe => true)
+    assert_raise Mongo::OperationFailure do
+      assert @db2['stuff'].insert({:a => 2}, :safe => true)
+    end
   end
 
 end

test/auxillary/autoreconnect_test.rb

@@ -1,7 +1,7 @@
 $:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 require 'mongo'
 require 'test/unit'
-require './test/test_helper'
+require File.expand_path("../../test_helper", __FILE__)
 
 # NOTE: This test requires bouncing the server
 class AutoreconnectTest < Test::Unit::TestCase

test/auxillary/fork_test.rb

@@ -0,0 +1,30 @@
+$:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
+require 'mongo'
+require 'test/unit'
+require File.expand_path("../../test_helper", __FILE__)
+
+class ForkTest < Test::Unit::TestCase
+  include Mongo
+
+  def setup
+    @conn = standard_connection
+  end
+
+  def test_fork
+    # Now insert some data
+    10.times do |n|
+      @conn[MONGO_TEST_DB]['nums'].insert({:a => n})
+    end
+
+    # Now fork. You'll almost always see an exception here.
+    if !Kernel.fork
+      10.times do
+        assert @conn[MONGO_TEST_DB]['nums'].find_one
+      end
+    else
+      10.times do
+        assert @conn[MONGO_TEST_DB]['nums'].find_one
+      end
+    end
+  end
+end

test/auxillary/repl_set_auth_test.rb

@@ -0,0 +1,71 @@
+$:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
+require File.expand_path("../../test_helper", __FILE__)
+require './test/tools/auth_repl_set_manager'
+require './test/replica_sets/rs_test_helper'
+
+class AuthTest < Test::Unit::TestCase
+  include Mongo
+
+  def setup
+    @rs = AuthReplSetManager.new(:start_port => 40000)
+    @rs.start_set
+  end
+
+  def teardown
+    #@rs.cleanup_set
+  end
+
+  def test_repl_set_auth
+    @conn = ReplSetConnection.new(build_seeds(3), :name => @rs.name)
+
+    # Add an admin user
+    @conn['admin'].add_user("me", "secret")
+
+    # Ensure that insert fails
+    assert_raise_error Mongo::OperationFailure, "unauthorized" do
+      @conn['foo']['stuff'].insert({:a => 2}, :safe => {:w => 3})
+    end
+
+    # Then authenticate
+    assert @conn['admin'].authenticate("me", "secret")
+
+    # Insert should succeed now
+    assert @conn['foo']['stuff'].insert({:a => 2}, :safe => {:w => 3})
+
+    # So should a query
+    assert @conn['foo']['stuff'].find_one
+
+    # But not when we logout
+    @conn['admin'].logout
+
+    assert_raise_error Mongo::OperationFailure, "unauthorized" do
+      @conn['foo']['stuff'].find_one
+    end
+
+    # Same should apply to a random secondary
+    @slave1 = Connection.new(@conn.secondary_pools[0].host,
+      @conn.secondary_pools[0].port, :slave_ok => true)
+
+    # Find should fail
+    assert_raise_error Mongo::OperationFailure, "unauthorized" do
+      @slave1['foo']['stuff'].find_one
+    end
+
+    # But not when authenticated
+    assert @slave1['admin'].authenticate("me", "secret")
+    assert @slave1['foo']['stuff'].find_one
+
+    # Same should apply when using :secondary_only
+    @second_only = ReplSetConnection.new(build_seeds(3), 
+      :require_primary => false, :read => :secondary_only)
+
+    # Find should fail
+    assert_raise_error Mongo::OperationFailure, "unauthorized" do
+      @second_only['foo']['stuff'].find_one
+    end
+
+    # But not when authenticated
+    assert @second_only['admin'].authenticate("me", "secret")
+    assert @second_only['foo']['stuff'].find_one
+  end
+end