Module: Sidekiq::Sqs::Fetcher

Extended by:
ActiveSupport::Concern
Defined in:
lib/sidekiq-sqs/fetcher.rb

Constant Summary collapse

QueueNotDoneError = 
Class.new(StandardError)

Instance Method Summary collapse

Instance Method Details

#fetch ⇒ Object 



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# File 'lib/sidekiq-sqs/fetcher.rb', line 21

def fetch
  watchdog('Fetcher#fetch died') do
    return if Sidekiq::Fetcher.done?

    begin
      queue = nil
      msg = nil

      ## FIXME
      queues = queues_cmd
      queues.pop # Last entry is TIMEOUT

      msg = queues.inject(nil) do |message, queue|
        message || fetch_single_message(queue)
      end

      if msg
        @mgr.assign!(msg, File.basename(msg.queue.url))
      else
        after(5) { fetch }
      end
    rescue QueueNotDoneError
      # Just wait
      after(5) { fetch }
    rescue => ex
      logger.error("Error fetching message from queues (#{@queues.join(', ')}): #{ex}")
      logger.error(ex.backtrace.first)
      sleep(self.class::TIMEOUT)
      after(0) { fetch }
    end
  end
end

#fetch_single_message(queue) ⇒ Object 



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# File 'lib/sidekiq-sqs/fetcher.rb', line 54

def fetch_single_message(queue)
  queue = Sidekiq.sqs.queues.named(queue)
  message = queue.receive_message

  if @strictly_ordered_queues && message.nil?
    # If messages being processed, raise
    if queue.invisible_messages != 0
      raise QueueNotDoneError
    end
  else
    message
  end
end

#initialize_with_sqs(mgr, queues, strict) ⇒ Object 



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# File 'lib/sidekiq-sqs/fetcher.rb', line 13

def initialize_with_sqs(mgr, queues, strict)
  initialize_without_sqs(mgr, queues, strict)
  
  # Fix Queue names
  @queues = @queues.map {|queue| Sidekiq::Client.environmental_queue_name queue.gsub(/^queue:/, '') }
  @unique_queues = @queues.uniq
end