Module: FrenzyBunnies::Worker::ClassMethods

Defined in:
lib/frenzy_bunnies/worker.rb

Instance Method Summary collapse

Instance Method Details

#from_queue(q, opts = {}) ⇒ Object 



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# File 'lib/frenzy_bunnies/worker.rb', line 21

def from_queue(q, opts={})
  @queue_name = q
  @queue_opts = opts
end

#jobs_stats ⇒ Object 



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# File 'lib/frenzy_bunnies/worker.rb', line 87

def jobs_stats
  Hash[ @jobs_stats.map{ |k,v| [k, v.value] } ].merge({ :since => @working_since.to_i })
end

#queue_opts ⇒ Object 



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# File 'lib/frenzy_bunnies/worker.rb', line 83

def queue_opts
  @queue_opts
end

#start(context) ⇒ Object 



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# File 'lib/frenzy_bunnies/worker.rb', line 26

def start(context)
  @jobs_stats = { :failed => Atomic.new(0), :passed => Atomic.new(0) }
  @working_since = Time.now

  @logger = context.logger

  @queue_opts[:prefetch] ||= 10
  @queue_opts[:durable] ||= false
  @queue_opts[:timeout_job_after] = 5 if @queue_opts[:timeout_job_after].nil?
  @queue_opts[:handler] ||= FrenzyBunnies::Handlers::Oneshot

  if @queue_opts[:threads]
    @thread_pool = MarchHare::ThreadPools.fixed_of_size(@queue_opts[:threads])
  else
    @thread_pool = MarchHare::ThreadPools.dynamically_growing
  end

  q = context.queue_factory.build_queue(@queue_name, @queue_opts)

  say "#{@queue_opts[:threads] ? "#{@queue_opts[:threads]} threads " : ''}with #{@queue_opts[:prefetch]} prefetch on <#{@queue_name}>."

  q.subscribe(:ack => true, :blocking => false, :executor => @thread_pool) do |headers, msg|
    worker = new
    handler = @queue_opts[:handler].new(headers.channel, q, @logger, { queue_options: @queue_opts })
    begin
      Timeout::timeout(@queue_opts[:timeout_job_after]) do
        if worker.work(msg)
          handler.acknowledge(headers, msg)
          incr! :passed
        else
          handler.reject(headers, msg)
          incr! :failed
          error "REJECTED", msg
        end
      end
    rescue Timeout::Error
      handler.timeout(headers, msg)
      incr! :failed
      error "TIMEOUT #{@queue_opts[:timeout_job_after]}s", msg
    rescue
      handler.reject(headers, msg)
      incr! :failed
      error "ERROR #{$!}", msg
    end
  end

  say "workers up."
end

#stop ⇒ Object 



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# File 'lib/frenzy_bunnies/worker.rb', line 75

def stop
  say "stopping"
  @thread_pool.shutdown_now
  say "pool shutdown"
  # @s.cancel  #for some reason when the channel socket is broken, this is holding the process up and we're zombie.
  say "stopped"
end