lib/karafka/pro/processing/strategies/aj/lrj_mom_vp.rb
# frozen_string_literal: true
# This Karafka component is a Pro component under a commercial license.
# This Karafka component is NOT licensed under LGPL.
#
# All of the commercial components are present in the lib/karafka/pro directory of this
# repository and their usage requires commercial license agreement.
#
# Karafka has also commercial-friendly license, commercial support and commercial components.
#
# By sending a pull request to the pro components, you are agreeing to transfer the copyright of
# your code to Maciej Mensfeld.
module Karafka
module Pro
module Processing
module Strategies
module Aj
# ActiveJob enabled
# Long-Running Job enabled
# Manual offset management enabled
# Virtual Partitions enabled
module LrjMomVp
include Strategies::Default
include Strategies::Vp::Default
# Features for this strategy
FEATURES = %i[
active_job
long_running_job
manual_offset_management
virtual_partitions
].freeze
# No actions needed for the standard flow here
def handle_before_schedule_consume
super
coordinator.on_enqueued do
pause(:consecutive, Strategies::Lrj::Default::MAX_PAUSE_TIME, false)
end
end
# Standard flow without any features
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?
# no need to check for manual seek because AJ consumer is internal and
# fully controlled by us
seek(coordinator.seek_offset, false) 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
# LRJ cannot resume here. Only in handling the after consumption
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
ensure
coordinator.decrement(:revoked)
end
end
end
end
end
end
end