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| require 'rubygems' | |
| require 'mq' | |
| class ConnectionManager | |
| @@current_connection = :default | |
| @@alternative_connections = [:default, :default1, :default2] | |
| def self.connections(type = :deafult) | |
| # To connect to different nodes, have a configuration hash | |
| # that matches the type, and use that for differnt connections | |
| # | |
| # CAn use this method to cycle through alternai | |
| @connections ||= Hash.new do |h,k| | |
| conn = AMQP.connect | |
| conn.callback{ do_setup } | |
| h[k] = conn | |
| end | |
| @connections[type] | |
| end | |
| def self.connection | |
| connections @@current_connection | |
| end | |
| def self.reconnect | |
| idx = @@alternative_connections.index(@@current_connection) | |
| idx = idx >= (@@alternative_connections.size - 1) ? 0 : (idx + 1) | |
| @@current_connection = @@alternative_connections[idx] | |
| puts "Reconnecting on #{@@current_connection.inspect}" | |
| connection.reconnect | |
| end | |
| end | |
| EM.error_handler {|e| | |
| p [:exception, e, e.backtrace.first] | |
| if e.kind_of? AMQP::Error | |
| EM.add_timer(1) { | |
| ConnectionManager.reconnect | |
| } | |
| end | |
| } | |
| def do_setup | |
| p [:do_setup] | |
| mq = MQ.new(ConnectionManager.connection) | |
| mq.queue("test").subscribe { |msg| | |
| p "Received: #{msg}" | |
| } | |
| EM.add_periodic_timer(1) do | |
| mq.queue('test').publish("Hey - #{Time.now}") | |
| end | |
| end | |
| EM.run { | |
| ConnectionManager.connection | |
| } |
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