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Contents
# frozen_string_literal: true
module Karafka
module Messages
# Simple batch metadata object that stores all non-message information received from Kafka
# cluster while fetching the data.
#
# @note This metadata object refers to per batch metadata, not `#message.metadata`
BatchMetadata = Struct.new(
:size,
:first_offset,
:last_offset,
:deserializer,
:partition,
:topic,
:created_at,
:scheduled_at,
:processed_at,
keyword_init: true
) do
# This lag describes how long did it take for a message to be consumed from the moment it was
# created
#
#
# @return [Integer] number of milliseconds
# @note In case of usage in workless flows, this value will be set to -1
def consumption_lag
processed_at ? time_distance_in_ms(processed_at, created_at) : -1
end
# This lag describes how long did a batch have to wait before it was picked up by one of the
# workers
#
# @return [Integer] number of milliseconds
# @note In case of usage in workless flows, this value will be set to -1
def processing_lag
processed_at ? time_distance_in_ms(processed_at, scheduled_at) : -1
end
private
# Computes time distance in between two times in ms
#
# @param time1 [Time]
# @param time2 [Time]
# @return [Integer] distance in between two times in ms
def time_distance_in_ms(time1, time2)
((time1 - time2) * 1_000).round
end
end
end
end
Version data entries
35 entries across 35 versions & 1 rubygems