Module: Karafka::Pro::Processing::Strategies::Aj::DlqLrjMomVp

Includes:
DlqMomVp, LrjMom
Defined in:
lib/karafka/pro/processing/strategies/aj/dlq_lrj_mom_vp.rb

Overview

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

This case is a bit of special. Please see the Aj::DlqMom for explanation on how the offset management works in this case.

Constant Summary collapse

FEATURES =

Features for this strategy

%i[
  active_job
  dead_letter_queue
  long_running_job
  manual_offset_management
  virtual_partitions
].freeze

Instance Method Summary collapse

Methods included from Lrj::Mom

#handle_before_schedule_consume, #handle_revoked

Methods included from Default

#handle_before_consume, #handle_before_schedule_consume, #handle_before_schedule_tick, #handle_consume, #handle_revoked, #handle_tick, #mark_as_consumed, #mark_as_consumed!, #mark_in_memory, #mark_in_transaction, #mark_with_transaction, #store_offset_metadata, #transaction

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

#commit_offsets, #commit_offsets!, #handle_before_consume, #handle_consume, #handle_eofed, #handle_idle, #handle_initialized, #handle_revoked, #handle_shutdown, #handle_wrap, #mark_as_consumed, #mark_as_consumed!

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

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

Methods included from Vp::Default

#collapse_until!, #collapsed?, #failing?, #mark_as_consumed, #mark_as_consumed!, #mark_in_transaction, #synchronize

Methods included from Dlq::Default

#apply_dlq_flow, #build_dlq_message, #dispatch_if_needed_and_mark_as_consumed, #dispatch_in_a_transaction?, #dispatch_to_dlq, #dispatch_to_dlq?, #find_skippable_message, #mark_after_dispatch?, #mark_as_consumed, #mark_as_consumed!, #mark_dispatched_to_dlq

Instance Method Details

#handle_after_consume ⇒ Object

This strategy assumes we do not early break on shutdown as it has VP

[View source]

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# File 'lib/karafka/pro/processing/strategies/aj/dlq_lrj_mom_vp.rb', line 33

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

      # Since we have VP here we do not commit intermediate offsets and need to commit
      # them here. We do commit in collapsed mode but this is generalized.
      mark_as_consumed(last_group_message) unless revoked?
      # no need to check for manual seek because AJ consumer is internal and
      # fully controlled by us
      seek(seek_offset, false) unless revoked?

      resume
    else
      apply_dlq_flow do
        skippable_message, = find_skippable_message
        dispatch_to_dlq(skippable_message) if dispatch_to_dlq?
        mark_dispatched_to_dlq(skippable_message)
      end
    end
  end
end