Class: RabbitMQClient::Exchange

Inherits:
Object
  • Object
show all
Defined in:
lib/jessica/rabbitmq_client.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, type, channel, opts = {}) ⇒ Exchange

Returns a new instance of Exchange.



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# File 'lib/jessica/rabbitmq_client.rb', line 215

def initialize(name, type, channel, opts={})
  @name = name
  @type = type
  @channel = channel

  @durable, @auto_delete,@args = opts.values_at(:durable,:auto_delete,:args)
  # Declare a non-passive, auto-delete exchange
  @channel.exchange_declare(@name, type.to_s, durable, @auto_delete || false, @args)
  self
end

Instance Attribute Details

#durable ⇒ Object (readonly)

Returns the value of attribute durable.



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# File 'lib/jessica/rabbitmq_client.rb', line 213

def durable
  @durable
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/jessica/rabbitmq_client.rb', line 213

def name
  @name
end

Instance Method Details

#match_opts(opts) ⇒ Object 



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# File 'lib/jessica/rabbitmq_client.rb', line 226

def match_opts(opts)
  dur,aut,arg = opts.values_at(:durable,:auto_delete,:args)
  @durable == dur && @auto_delete == aut && @args == arg
end

#publish(msg, opts) ⇒ Object

PUBLISH_OPTS = {

  :immediate => false,
  :mandatory => true,
  :persistent => true,
  :routing_key => 'messages.xyz'
}

Parameters:

  • options (Hash) —

    a customizable set of options



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# File 'lib/jessica/rabbitmq_client.rb', line 260

def publish(msg, opts)
  routing_key = opts[:routing_key] || opts[:key]
  mandatory =   opts[:mandatory]  || false
  immediate =   opts[:immediate]  || false
  persistent =  opts[:persistent] || false
  headers =     opts[:headers]
  _type =       opts[:type] || 'basic'

  properties = case _type
  when 'minimal'
    if persistent
      RabbitMQClient::MessageProperties::MINIMAL_PERSISTENT_BASIC
    else
      RabbitMQClient::MessageProperties::MINIMAL_BASIC
    end
  when 'basic'
    if persistent
      RabbitMQClient::MessageProperties::PERSISTENT_BASIC
    else
      RabbitMQClient::MessageProperties::BASIC
    end
  else
    if persistent
      RabbitMQClient::MessageProperties::PERSISTENT_TEXT_PLAIN
    else
      RabbitMQClient::MessageProperties::TEXT_PLAIN
    end
  end

  properties.headers = headers if headers

  returns, confirms = opts.values_at(:listen_for_returns,:listen_for_confirms)
  time_out = opts[:time_out] || 0.01

  if returns || confirms
    feedback_queue = SizedQueue.new(1)
    @channel.return_listener = ReturnedMessageListener.new(lambda {|reply| feedback_queue << reply}) if returns
    @channel.confirm_listener = ConfirmedMessageListener.new(lambda {|reply| feedback_queue << reply}) if confirms
  end

  internal_publish msg, routing_key, properties, mandatory, immediate

  if returns || confirms
    Thread.new(time_out) do |n|
      sleep n
      feedback_queue << {:kind => "TIME_OUT"}
    end
    ret = feedback_queue.pop
    @channel.return_listener = nil if returns
    @channel.confirm_listener = nil if confirms
    ret
  end
end