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# frozen_string_literal: true
# This module should be included in order to turn an ApplicationWorker
# into a Subscriber.
# This module overrides the `perform` method and provides a better and
# safer interface for handling events via `handle_event` method.
#
# @example:
# class SomeEventSubscriber
# include Gitlab::EventStore::Subscriber
#
# def handle_event(event)
# # ...
# end
# end
module Gitlab
module EventStore
module Subscriber
extend ActiveSupport::Concern
included do
include ApplicationWorker
loggable_arguments 0, 1
idempotent!
end
def perform(event_type, data)
raise InvalidEvent, event_type unless self.class.const_defined?(event_type)
event_type_class = event_type.constantize
Array.wrap(data).each do |single_event_data|
handle_event(construct_event(event_type_class, single_event_data))
end
end
def handle_event(event)
raise NotImplementedError, 'you must implement this methods in order to handle events'
end
private
def construct_event(event_type, event_data)
event_type.new(data: event_data.with_indifferent_access)
end
end
end
end
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