Class: Chimp::QueueWorker

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ QueueWorker

Returns a new instance of QueueWorker.



9
10
11
12
13
 
# File 'lib/right_chimp/queue/queue_worker.rb', line 9

def initialize
  @delay = 0
  @retry_count = 0
  @never_exit = true
end

Instance Attribute Details

#delay ⇒ Object

Returns the value of attribute delay.



7
8
9
 
# File 'lib/right_chimp/queue/queue_worker.rb', line 7

def delay
  @delay
end

#never_exit ⇒ Object

Returns the value of attribute never_exit.



7
8
9
 
# File 'lib/right_chimp/queue/queue_worker.rb', line 7

def never_exit
  @never_exit
end

#retry_count ⇒ Object

Returns the value of attribute retry_count.



7
8
9
 
# File 'lib/right_chimp/queue/queue_worker.rb', line 7

def retry_count
  @retry_count
end

Instance Method Details

#run ⇒ Object

Grab work items from the ChimpQueue and process them Only stop is @ever_exit is false



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
 
# File 'lib/right_chimp/queue/queue_worker.rb', line 19

def run
  while @never_exit
    work_item = ChimpQueue.instance.shift()

    begin
      if work_item != nil

        job_uuid = work_item.job_uuid
        group = work_item.group.group_id

        work_item.retry_count = @retry_count
        work_item.owner = Thread.current.object_id

        ChimpDaemon.instance.semaphore.synchronize do
          # only do this if we are running with chimpd
          if ChimpDaemon.instance.queue.processing[group].nil?
            # no op
          else
            # remove from the processing queue
            if ChimpDaemon.instance.queue.processing[group][job_uuid.to_sym] == 0
              Log.debug 'Completed processing task ' + job_uuid.to_s
              Log.debug 'Deleting ' + job_uuid.to_s

              ChimpDaemon.instance.queue.processing[group].delete(job_uuid.to_sym)

              Log.debug ChimpDaemon.instance.queue.processing.inspect

              ChimpDaemon.instance.proc_counter -= 1
            else
              if ChimpDaemon.instance.queue.processing[group][job_uuid.to_sym].nil?
                Log.debug 'Job group was already deleted, no counter to decrease.'
              else
                Log.debug 'Decreasing processing counter (' + ChimpDaemon.instance.proc_counter.to_s +
                          ') for [' + job_uuid.to_s + '] group: ' + group.to_s

                ChimpDaemon.instance.queue.processing[group][job_uuid.to_sym] -= 1

                Log.debug 'Processing counter now (' + ChimpDaemon.instance.proc_counter.to_s +
                          ') for [' + job_uuid.to_s + '] group: ' + group.to_s
                Log.debug ChimpDaemon.instance.queue.processing[group].inspect
                Log.debug 'Still counting down for ' + job_uuid.to_s

                ChimpDaemon.instance.proc_counter -= 1
              end
            end
          end
        end

        work_item.run
      else
        sleep 1
      end

    rescue Exception => ex
      Log.error "Exception in QueueWorker.run: #{ex}"
      Log.debug ex.inspect
      Log.debug ex.backtrace

      work_item.status = Executor::STATUS_ERROR
      work_item.error = ex
    end
  end
end