Class: ScbiMapreduce::Worker

Inherits:
EventMachine::Connection
  • Object
show all
Includes:
EM::P::ObjectProtocol
Defined in:
lib/scbi_mapreduce/worker.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Worker

Returns a new instance of Worker.



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# File 'lib/scbi_mapreduce/worker.rb', line 41

def initialize(*args)
  super

end

Class Method Details

.start_worker(worker_id, ip, port, log_file = nil) ⇒ Object 



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# File 'lib/scbi_mapreduce/worker.rb', line 122

def self.start_worker(worker_id,ip,port,log_file=nil)
  #puts "NEW WORKER - INIIIIIIIIIIIIIIIIIIIIT #{self}"
  ip = ip
  port = port
  @@count = -1

  @@worker_id=worker_id

  if log_file.nil?
    log_file = 'logs/worker'+worker_id+'_'+`hostname`.chomp+'_log.txt'
  end

  FileUtils.mkdir_p(File.dirname(log_file)) if ((log_file!=STDOUT) && (!File.exists?(File.dirname(log_file))))

  $WORKER_LOG = Logger.new(log_file)
  $WORKER_LOG.datetime_format = "%Y-%m-%d %H:%M:%S"

  $LOG = $WORKER_LOG

  total_seconds = Time.now

  EM.error_handler{ |e|
    $WORKER_LOG.error(e.message + ' => ' + e.backtrace.join("\n"))
  }

  EventMachine::run {

    EventMachine::connect ip, port, self
    $WORKER_LOG.info "Worker connected to #{ip}:#{port}"

  }

  total_seconds = Time.now-total_seconds
  $WORKER_LOG.info "Client #{@@worker_id} processed: #{@@count} objs"
  $WORKER_LOG.info "Client #{@@worker_id} proc rate: #{@@count/total_seconds.to_f} objects/seg"

end

Instance Method Details

#closing_worker ⇒ Object 



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# File 'lib/scbi_mapreduce/worker.rb', line 35

def closing_worker


end

#post_init ⇒ Object 



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# File 'lib/scbi_mapreduce/worker.rb', line 46

def post_init
  $WORKER_LOG.info('WORKER CONNECTED')

  worker_connected
rescue Exception => e
  $WORKER_LOG.error("Exiting worker #{@@worker_id} due to exception:\n" + e.message+"\n"+e.backtrace.join("\n"))
  #raise e
end

#process_object(obj) ⇒ Object 



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

def process_object(obj)

end

#receive_initial_config(obj) ⇒ Object 



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# File 'lib/scbi_mapreduce/worker.rb', line 15

def receive_initial_config(obj)


end

#receive_object(obj) ⇒ Object 



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# File 'lib/scbi_mapreduce/worker.rb', line 55

def receive_object(obj)

  if @@count < 0
    @@count += 1
    # receive initial config
    if obj != :no_initial_config then
      receive_initial_config(obj[:initial_config])

      $WORKER_LOG.info('Initial config: received')
    else
      $WORKER_LOG.info('Initial config: empty config')
    end
    # At first iteration, start worker
    starting_worker
  else

    if obj == :quit
      stop_worker
    else
      @@count += 1

      # OJO  - HAY QUE PASAR EL MODIFIED OBJECT
      #  operation = proc {
      #               # calculations
      #               obj=process_object(obj)
      #               #puts '.' + obj.seq_name
      #               #return obj
      #             }
      #
      #             callback = proc { |modified_obj|
      #               send_object(modified_obj)
      #             }
      #
      #             EventMachine.defer(operation, callback)
      #send_object(obj)


      begin

        modified_data=process_object(obj.data)
        obj.data = modified_data

        send_object(obj)

      rescue Exception => e
        $WORKER_LOG.error("Error processing object\n" + e.message + ":\n" + e.backtrace.join("\n"))
        exception= WorkerError.new('Message',e,@@worker_id,obj)
        send_object(exception)

      end


    end
  end
end

#starting_worker ⇒ Object 



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

def starting_worker


end

#stop_worker ⇒ Object 



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# File 'lib/scbi_mapreduce/worker.rb', line 116

def stop_worker
  close_connection
  EventMachine::stop_event_loop
  closing_worker
end

#unbind ⇒ Object 



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# File 'lib/scbi_mapreduce/worker.rb', line 111

def unbind
  $WORKER_LOG.info "EXITING WORKER"
  EventMachine::stop_event_loop
end

#worker_connected ⇒ Object 



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# File 'lib/scbi_mapreduce/worker.rb', line 31

def worker_connected

end