Module: Karafka::Pro::Processing::Strategies::AjLrjMomVp

Includes:
Default
Defined in:
lib/karafka/pro/processing/strategies/aj_lrj_mom_vp.rb

Overview

ActiveJob enabled Long-Running Job enabled Manual offset management enabled Virtual Partitions enabled

Constant Summary collapse

FEATURES =

Features for this strategy

%i[
  active_job
  long_running_job
  manual_offset_management
  virtual_partitions
].freeze

Instance Method Summary collapse

Methods included from Default

#handle_before_consume, #handle_consume

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

#handle_before_consume, #handle_consume, #handle_shutdown

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

#handle_before_consume, #handle_consume, #handle_shutdown

Instance Method Details

#handle_after_consume ⇒ Object

Standard flow without any features



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# File 'lib/karafka/pro/processing/strategies/aj_lrj_mom_vp.rb', line 41

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

      mark_as_consumed(last_group_message) unless revoked? || Karafka::App.stopping?
      seek(coordinator.seek_offset) unless revoked?

      resume
    else
      # If processing failed, we need to pause
      # For long running job this will overwrite the default never-ending pause and will
      # cause the processing to keep going after the error backoff
      retry_after_pause
    end
  end
end

#handle_before_enqueue ⇒ Object

No actions needed for the standard flow here



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# File 'lib/karafka/pro/processing/strategies/aj_lrj_mom_vp.rb', line 34

def handle_before_enqueue
  coordinator.on_enqueued do
    pause(coordinator.seek_offset, Lrj::MAX_PAUSE_TIME, false)
  end
end

#handle_revoked ⇒ Object

LRJ cannot resume here. Only in handling the after consumption



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# File 'lib/karafka/pro/processing/strategies/aj_lrj_mom_vp.rb', line 60

def handle_revoked
  coordinator.on_revoked do
    coordinator.revoke
  end

  Karafka.monitor.instrument('consumer.revoke', caller: self)
  Karafka.monitor.instrument('consumer.revoked', caller: self) do
    revoked
  end
end