Class: Tootsie::AmqpQueue

Inherits:
Object
  • Object
show all
Defined in:
lib/tootsie/queues/amqp_queue.rb

Overview

A queue which uses the AMQP protocol.

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ AmqpQueue

Returns a new instance of AmqpQueue.



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# File 'lib/tootsie/queues/amqp_queue.rb', line 6

def initialize(options = {})
  options.assert_valid_keys(:host_name, :queue_name, :max_backoff)
  @backoff = Utility::Backoff.new(:max => options[:max_backoff])
  @logger = Application.get.logger
  @host_name = options[:host_name] || 'localhost'
  @queue_name = options[:queue_name] || 'tootsie'
end

Instance Method Details

#count ⇒ Object 



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# File 'lib/tootsie/queues/amqp_queue.rb', line 14

def count
  nil
end

#pop(options = {}) ⇒ Object 



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# File 'lib/tootsie/queues/amqp_queue.rb', line 27

def pop(options = {})
  item = nil
  loop do
    @backoff.with do
      message = nil
      with_retry do
        with_connection do
          message = @queue.pop(:ack => true)
        end
      end
      if message
        data = message[:payload]
        data = nil if data == :queue_empty
        if data
          @logger.info "Popped: #{data.inspect}"
          item = JSON.parse(data)
          with_connection do
            @queue.ack(:delivery_tag => message[:delivery_details][:delivery_tag])
          end
        end
      end
      if item or not options[:wait]
        true
      else
        false
      end
    end
    break if item
  end
  item
end

#push(item) ⇒ Object 



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# File 'lib/tootsie/queues/amqp_queue.rb', line 18

def push(item)
  data = item.to_json
  with_retry do
    with_connection do
      @exchange.publish(data, :persistent => true, :key => @queue_name)
    end
  end
end