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Contents
# frozen_string_literal: true
module Karafka
module Routing
# Default consumer mapper that builds consumer ids based on app id and consumer group name
# Different mapper can be used in case of preexisting consumer names or for applying
# other naming conventions not compatible with Karafka client_id + consumer name concept
#
# @example Mapper for using consumer groups without a client_id prefix
# class MyMapper
# def call(raw_consumer_group_name)
# raw_consumer_group_name
# end
# end
#
# @example Mapper for replacing "_" with "." in topic names
# class MyMapper
# def call(raw_consumer_group_name)
# [
# Karafka::Helpers::Inflector.map(Karafka::App.config.client_id.to_s),
# raw_consumer_group_name
# ].join('_').gsub('_', '.')
# end
# end
class ConsumerMapper
# @param raw_consumer_group_name [String, Symbol] string or symbolized consumer group name
# @return [String] remapped final consumer group name
def call(raw_consumer_group_name)
client_name = Karafka::Helpers::Inflector.map(Karafka::App.config.client_id.to_s)
"#{client_name}_#{raw_consumer_group_name}"
end
end
end
end
Version data entries
27 entries across 27 versions & 1 rubygems