Module: Karafka::Pro::Processing::Strategies::Dlq::LrjMom

Includes:
Lrj
Included in:
FtrLrjMom, LrjMomVp
Defined in:
lib/karafka/pro/processing/strategies/dlq/lrj_mom.rb

Overview

Strategy for supporting DLQ with Mom and LRJ enabled

Constant Summary collapse

FEATURES =

Features for this strategy

%i[
  dead_letter_queue
  long_running_job
  manual_offset_management
].freeze

Constants included from Lrj::Default

Lrj::Default::MAX_PAUSE_TIME

Instance Method Summary collapse

Methods included from Lrj::Default

#handle_before_enqueue, #handle_revoked

Methods included from Karafka::Pro::Processing::Strategies::Default

#handle_before_consume, #handle_before_enqueue, #handle_consume, #handle_revoked

Methods included from Karafka::Processing::Strategies::Default

#commit_offsets, #commit_offsets!, #handle_before_consume, #handle_before_enqueue, #handle_consume, #handle_idle, #handle_revoked, #handle_shutdown, #mark_as_consumed, #mark_as_consumed!

Methods included from Karafka::Processing::Strategies::Base

#handle_before_consume, #handle_before_enqueue, #handle_consume, #handle_idle, #handle_revoked, #handle_shutdown

Methods included from Default

#build_dlq_message, #dispatch_to_dlq, #dispatch_to_dlq?, #find_skippable_message

Instance Method Details

#handle_after_consume ⇒ Object

LRJ standard flow after consumption with DLQ dispatch and no offset management



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# File 'lib/karafka/pro/processing/strategies/dlq/lrj_mom.rb', line 33

def handle_after_consume
  coordinator.on_finished do |last_group_message|
    if coordinator.success?
      coordinator.pause_tracker.reset

      return if coordinator.manual_pause?

      unless revoked? || coordinator.manual_seek?
        seek(last_group_message.offset + 1, false)
      end

      resume
    elsif coordinator.pause_tracker.attempt <= topic.dead_letter_queue.max_retries
      retry_after_pause
    else
      coordinator.pause_tracker.reset

      return resume if revoked?

      skippable_message, _marked = find_skippable_message
      dispatch_to_dlq(skippable_message) if dispatch_to_dlq?

      coordinator.seek_offset = skippable_message.offset + 1
      pause(coordinator.seek_offset, nil, false)
    end
  end
end