Class: RailsAutoscaleAgent::WorkerAdapters::Que

Inherits:
Object
  • Object
show all
Includes:
Logger, Singleton
Defined in:
lib/rails_autoscale_agent/worker_adapters/que.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Logger

#logger

Instance Attribute Details

#queues ⇒ Object 



13
14
15
16
17
18
19
 
# File 'lib/rails_autoscale_agent/worker_adapters/que.rb', line 13

def queues
  # Track the known queues so we can continue reporting on queues that don't
  # have enqueued jobs at the time of reporting.
  # Assume a "default" queue so we always report *something*, even when nothing
  # is enqueued.
  @queues ||= Set.new(['default'])
end

Instance Method Details

#collect!(store) ⇒ Object 



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
 
# File 'lib/rails_autoscale_agent/worker_adapters/que.rb', line 28

def collect!(store)
  log_msg = String.new
  t = Time.now.utc
  sql = "    SELECT queue, min(run_at)\n    FROM que_jobs\n    WHERE finished_at IS NULL\n    AND expired_at IS NULL\n    AND error_count = 0\n    GROUP BY 1\n  SQL\n\n  run_at_by_queue = Hash[select_rows_silently(sql)]\n\n  # Don't collect worker metrics if there are unreasonable number of queues\n  if run_at_by_queue.size > Config.instance.max_queues\n    logger.warn \"Skipping Que metrics - \#{run_at_by_queue.size} queues exceeds the \#{Config.instance.max_queues} queue limit\"\n    return\n  end\n\n  self.queues |= run_at_by_queue.keys\n\n  queues.each do |queue|\n    run_at = run_at_by_queue[queue]\n    run_at = DateTime.parse(run_at) if run_at.is_a?(String)\n    latency_ms = run_at ? ((t - run_at)*1000).ceil : 0\n    latency_ms = 0 if latency_ms < 0\n\n    store.push latency_ms, t, queue\n    log_msg << \"que.\#{queue}=\#{latency_ms} \"\n  end\n\n  logger.debug log_msg unless log_msg.empty?\nend\n"

#enabled? ⇒ Boolean

Returns:

  • (Boolean) 


21
22
23
24
25
26
 
# File 'lib/rails_autoscale_agent/worker_adapters/que.rb', line 21

def enabled?
  if defined?(::Que)
    logger.info "Que enabled (#{default_timezone})"
    true
  end
end