RUBY-379 RUBY-381 reconnect on 'not master' errors (fix close connection logic)

lib/mongo/connection.rb

@@ -458,12 +458,13 @@ module Mongo
       @primary_pool
     end
 
-    # The value of the read preference. Because
+    # The value of the read preference.
-    # this is a single-node connection, the value
-    # is +:primary+, and the connection will read
-    # from whichever type of node it's connected to.
     def read_preference
-      :primary
+      if slave_ok?
+        :secondary
+      else
+        :primary
+      end
     end
 
     # Close the connection to the database.

lib/mongo/cursor.rb

@@ -86,7 +86,7 @@ module Mongo
       if(!@timeout)
         add_option(OP_QUERY_NO_CURSOR_TIMEOUT)
       end
-      if(@connection.slave_ok?)
+      if(@read_preference != :primary)
         add_option(OP_QUERY_SLAVE_OK)
       end
       if(@tailable)
@@ -136,7 +136,7 @@ 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.new(err, doc['code'], doc)
         end

lib/mongo/repl_set_connection.rb

@@ -205,7 +205,7 @@ module Mongo
     def hard_refresh!
       log(:info, "Initiating hard refresh...")
       discovered_seeds = @manager ? @manager.seeds : []
-      background_manager = PoolManager.new(self, discovered_seeds | @original_seeds)
+      background_manager = PoolManager.new(self, discovered_seeds | @seeds)
       background_manager.connect
 
       # TODO: make sure that connect has succeeded
@@ -218,7 +218,7 @@ module Mongo
     end
 
     def connected?
-      self.primary_pool || self.read_pool
+      @connected && (self.primary_pool || self.read_pool)
     end
 
     # @deprecated
@@ -261,9 +261,13 @@ module Mongo
     end
 
     # Close the connection to the database.
-    def close
+    def close(opts={})
+      if opts[:soft]
+        @manager.close(:soft => true) if @manager
+      else
+        @manager.close if @manager
+      end
       @connected = false
-      @manager.close(:soft => true) if @manager
     end
 
     # If a ConnectionFailure is raised, this method will be called
@@ -348,8 +352,8 @@ module Mongo
 
     # Checkin a socket used for reading.
     def checkin_reader(socket)
-      if !self.read_pool.checkin(socket) &&
+      if !((self.read_pool && self.read_pool.checkin(socket)) ||
-        !self.primary_pool.checkin(socket)
+        (self.primary_pool && self.primary_pool.checkin(socket)))
         close_socket(socket)
       end
       sync_refresh
@@ -365,7 +369,7 @@ module Mongo
 
     def close_socket(socket)
       begin
-        socket.close
+        socket.close if socket
       rescue IOError
         log(:info, "Tried to close socket #{socket} but already closed.")
       end
@@ -388,36 +392,40 @@ module Mongo
     end
 
     def primary
-      @manager.primary
+      @manager ? @manager.primary : nil
     end
 
     # Note: might want to freeze these after connecting.
     def secondaries
-      @manager.secondaries
+      @manager ? @manager.secondaries : []
     end
 
     def hosts
-      @manager.hosts
+      @manager ? @manager.hosts : []
     end
 
     def primary_pool
-      @manager.primary_pool
+      @manager ? @manager.primary_pool : nil
     end
 
     def read_pool
-      @manager.read_pool
+      @manager ? @manager.read_pool : nil
     end
 
     def secondary_pools
-      @manager.secondary_pools
+      @manager ? @manager.secondary_pools : []
     end
 
     def tag_map
-      @manager.tag_map
+      @manager ? @manager.tag_map : {}
     end
 
     def max_bson_size
-      @manager.max_bson_size
+      if @manager && @manager.max_bson_size
+        @manager.max_bson_size
+      else
+        Mongo::DEFAULT_MAX_BSON_SIZE
+      end
     end
 
     private

lib/mongo/util/pool_manager.rb

@@ -109,7 +109,7 @@ module Mongo
     # The set of nodes that this class has discovered and
     # successfully connected to.
     def seeds
-      @seeds
+      @seeds || []
     end
 
     private
@@ -280,7 +280,7 @@ module Mongo
       end
 
       raise ConnectionFailure, "Cannot connect to a replica set using seeds " +
-        "#{@seeds.map {|s| "#{s[0]}:#{s[1]}" }.join(', ')}"
+        "#{seed_list.map {|s| "#{s[0]}:#{s[1]}" }.join(', ')}"
     end
 
     def seed_list

test/replica_sets/query_test.rb

@@ -5,7 +5,7 @@ class ReplicaSetQueryTest < Test::Unit::TestCase
   include ReplicaSetTest
 
   def setup
-    @conn = ReplSetConnection.new([self.rs.host, self.rs.ports[0], self.rs.ports[1]])
+    @conn = ReplSetConnection.new([self.rs.host, self.rs.ports[0]])
     @db = @conn.db(MONGO_TEST_DB)
     @db.drop_collection("test-sets")
     @coll = @db.collection("test-sets")