Class: Workhorse::Jobs::DetectStaleJobsJob

Inherits:
Object
  • Object
show all
Defined in:
lib/workhorse/jobs/detect_stale_jobs_job.rb

Instance Method Summary collapse

Constructor Details

#initialize(locked_to_started_threshold: 3 * 60, run_time_threshold: 12 * 60) ⇒ DetectStaleJobsJob

Instantiates a new stale detection job.

Parameters:

  • locked_to_started_threshold (Integer) (defaults to: 3 * 60) —

    The maximum number of seconds a job is allowed to stay ‘locked’ before this job throws an exception. Set this to 0 to skip this check.

  • run_time_threshold (Integer) (defaults to: 12 * 60) —

    The maximum number of seconds a job is allowed to run before this job throws an exception. Set this to 0 to skip this check.



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# File 'lib/workhorse/jobs/detect_stale_jobs_job.rb', line 11

def initialize(locked_to_started_threshold: 3 * 60, run_time_threshold: 12 * 60)
  @locked_to_started_threshold = locked_to_started_threshold
  @run_time_threshold = run_time_threshold
end

Instance Method Details

#perform ⇒ Object 



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# File 'lib/workhorse/jobs/detect_stale_jobs_job.rb', line 16

def perform
  messages = []

  # Detect jobs that are locked for too long #
  if @locked_to_started_threshold != 0
    rel = Workhorse::DbJob.locked
    rel = rel.where('locked_at < ?', @locked_to_started_threshold.seconds.ago)
    ids = rel.pluck(:id)

    unless ids.empty?
      messages << "Detected #{ids.size} jobs that were locked more than "\
                  "#{@locked_to_started_threshold}s ago and might be stale: #{ids.inspect}."
    end
  end

  # Detect jobs that are running for too long #
  if @run_time_threshold != 0
    rel = Workhorse::DbJob.started
    rel = rel.where('started_at < ?', @run_time_threshold.seconds.ago)
    ids = rel.pluck(:id)

    unless ids.empty?
      messages << "Detected #{ids.size} jobs that are running for longer than "\
                  "#{@run_time_threshold}s ago and might be stale: #{ids.inspect}."
    end
  end

  if messages.any?
    fail messages.join(' ')
  end
end