Class: QueueClassicPlus::CustomWorker

Inherits:
QC::Worker
  • Object
show all
Defined in:
lib/queue_classic_plus/worker.rb

Constant Summary collapse

CONNECTION_ERRORS = 
[PG::UnableToSend, PG::ConnectionBad].freeze
BACKOFF_WIDTH = 
10
FailedQueue = 
QC::Queue.new("failed_jobs")

Instance Method Summary collapse

Instance Method Details

#handle_failure(job, e) ⇒ Object 



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# File 'lib/queue_classic_plus/worker.rb', line 10

def handle_failure(job, e)
  QueueClassicPlus.logger.info "Handling exception #{e.class} - #{e.message} for job #{job[:id]}"

  force_retry = false
  if connection_error?(e)
    # If we've got here, unfortunately ActiveRecord's rollback mechanism may
    # not have kicked in yet and we might be in a failed transaction. To be
    # *absolutely* sure the retry/failure gets enqueued, we do a rollback
    # just in case (and if we're not in a transaction it will be a no-op).
    QueueClassicPlus.logger.info "Reset connection for job #{job[:id]}"
    @conn_adapter.connection.reset
    @conn_adapter.execute 'ROLLBACK'

    # We definitely want to retry because the connection was lost mid-task.
    force_retry = true
  end

  @failed_job_class_memoized = false
  @failed_job = job
  @raw_args = job[:args]

  if queue_classic_plus_job?
    @failed_job_args = failed_job_class.deserialized(@raw_args)

    if force_retry && !failed_job_class.disable_retries
      Metrics.increment("qc.force_retry", source: @q_name)
      retry_with_remaining(e)
    elsif failed_job_class.retries_on?(e)
      Metrics.increment("qc.retry", source: @q_name)
      retry_with_remaining(e)
    else
      enqueue_failed(e)
    end
  else
    enqueue_failed(e)
  end

  FailedQueue.delete(@failed_job[:id])
end