mongo-ruby-driver/lib/mongo/mongo.rb

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# --
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# Copyright (C) 2008-2009 10gen Inc.
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#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License, version 3, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
# for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# ++
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require 'mongo/db'
module XGen
module Mongo
module Driver
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# Represents a Mongo database server.
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class Mongo
DEFAULT_PORT = 27017
# Either nodes_or_host is a host name string and port is an optional
# port number that defaults to DEFAULT_PORT, or nodes_or_host is an
# array of arrays, where each is a host/port pair (or a host with no
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# port). Finally, if nodes_or_host is nil then host is 'localhost' and
# port is DEFAULT_PORT. Since that's so confusing, here are a few
# examples:
#
# Mongo.new # localhost, DEFAULT_PORT
# Mongo.new("localhost") # localhost, DEFAULT_PORT
# Mongo.new("localhost", 3000) # localhost, 3000
# Mongo.new([["localhost"]]) # localhost, DEFAULT_PORT
# Mongo.new([["localhost", 3000]]) # localhost, 3000
# Mongo.new([["db1.example.com", 3000], ["db2.example.com", 3000]]])
#
# When a DB object first connects, it tries nodes and stops at the
# first one it connects to.
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def initialize(nodes_or_host=nil, port=nil)
@nodes = case nodes_or_host
when String
[[nodes_or_host, port || DEFAULT_PORT]]
when Array
nodes_or_host.collect { |nh| [nh[0], nh[1] || DEFAULT_PORT] }
when nil
[['localhost', DEFAULT_PORT]]
end
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end
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# Return the XGen::Mongo::Driver::DB named +db_name+.
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def db(db_name)
XGen::Mongo::Driver::DB.new(db_name, @nodes)
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end
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# Not implemented.
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def clone_database(from)
raise "not implemented"
end
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# Not implemented.
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def copy_database(from_host, from_db, to_db)
raise "not implemented"
end
end
end
end
end