Class: Qu::Delayed::Worker

Inherits:
Object
  • Object
show all
Includes:
Logger
Defined in:
lib/qu/delayed/worker.rb

Defined Under Namespace

Classes: Abort

Instance Method Summary collapse

Instance Method Details

#handle_signals ⇒ Object 



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# File 'lib/qu/delayed/worker.rb', line 15

def handle_signals
  logger.debug "Sheduler #{id} registering traps for INT and TERM signals"
  %W(INT TERM).each do |sig|
    trap(sig) do
      logger.info "Sheduler #{id} received #{sig}, shutting down"
      raise Abort
    end
  end
end

#hostname ⇒ Object 



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# File 'lib/qu/delayed/worker.rb', line 59

def hostname
  @hostname ||= `hostname`.strip
end

#id ⇒ Object 



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# File 'lib/qu/delayed/worker.rb', line 51

def id
  @id ||= "#{hostname}:#{pid}"
end

#pid ⇒ Object 



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# File 'lib/qu/delayed/worker.rb', line 55

def pid
  @pid ||= Process.pid
end

#poll_frequency ⇒ Object 



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# File 'lib/qu/delayed/worker.rb', line 11

def poll_frequency
  Qu.backend.poll_frequency
end

#start ⇒ Object 



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# File 'lib/qu/delayed/worker.rb', line 41

def start
  logger.warn "Sheduler #{id} starting"
  handle_signals
  loop { work }
rescue Abort => e
  # Ok, we'll shut down, but give us a sec
ensure
  logger.debug "Sheduler #{id} done"
end

#work(options = {:block => true}) ⇒ Object 



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# File 'lib/qu/delayed/worker.rb', line 25

def work(options = {:block => true})
  loop do
    logger.debug { "Getting next delayed job" }

    if payload = Qu.backend.next_delayed_job
      return Qu.backend.enqueue(payload)
    end

    if options[:block]
      sleep poll_frequency
    else
      break
    end
  end
end