Class: Sneakers::Queue

Inherits:
Object
  • Object
show all
Defined in:
lib/sneakers/queue.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, opts) ⇒ Queue

Returns a new instance of Queue.



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# File 'lib/sneakers/queue.rb', line 5

def initialize(name, opts)
  @name = name
  @opts = opts
  @handler_klass = Sneakers::CONFIG[:handler]
end

Instance Attribute Details

#exchange ⇒ Object (readonly)

Returns the value of attribute exchange.



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# File 'lib/sneakers/queue.rb', line 3

def exchange
  @exchange
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/sneakers/queue.rb', line 3

def name
  @name
end

#opts ⇒ Object (readonly)

Returns the value of attribute opts.



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# File 'lib/sneakers/queue.rb', line 3

def opts
  @opts
end

Instance Method Details

#subscribe(worker) ⇒ Object

:exchange :heartbeat_interval :prefetch :durable :ack



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# File 'lib/sneakers/queue.rb', line 18

def subscribe(worker)
  #@bunny = Bunny.new(@opts[:amqp], :vhost => @opts[:vhost], :heartbeat => @opts[:heartbeat], :logger => Sneakers::logger)
  @bunny = @opts[:connection]
  @bunny ||= Bunny.new(@opts[:amqp], :vhost => @opts[:vhost], :heartbeat => @opts[:heartbeat], :logger => Sneakers::logger)
  @bunny.start

  @channel = @bunny.create_channel
  @channel.prefetch(@opts[:prefetch])

  exchange_name = @opts[:exchange]
  @exchange = @channel.exchange(exchange_name,
                                :type => @opts[:exchange_type],
                                :durable => @opts[:durable])

  routing_key = @opts[:routing_key] || @name
  routing_keys = [*routing_key]

  # TODO: get the arguments from the handler? Retry handler wants this so you
  # don't have to line up the queue's dead letter argument with the exchange
  # you'll create for retry.
  queue_durable = @opts[:queue_durable].nil? ? @opts[:durable] : @opts[:queue_durable]
  queue = @channel.queue(@name, :durable => queue_durable, :arguments => @opts[:arguments])

  if exchange_name.length > 0
    routing_keys.each do |key|
      queue.bind(@exchange, :routing_key => key)
    end
  end

  # NOTE: we are using the worker's options. This is necessary so the handler
  # has the same configuration as the worker. Also pass along the exchange and
  # queue in case the handler requires access to them (for things like binding
  # retry queues, etc).
  handler_klass = worker.opts[:handler] || Sneakers::CONFIG.fetch(:handler)
  handler = handler_klass.new(@channel, queue, worker.opts)

  @consumer = queue.subscribe(:block => false, :manual_ack => @opts[:ack]) do | delivery_info, metadata, msg |
    worker.do_work(delivery_info, metadata, msg, handler)
  end
  nil
end

#unsubscribe ⇒ Object 



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# File 'lib/sneakers/queue.rb', line 60

def unsubscribe
  # XXX can we cancel bunny and channel too?
  @consumer.cancel if @consumer
  @consumer = nil
end