module Projects # Base class for the various service classes that count project data (e.g. # issues or forks). class CountService < BaseCountService # The version of the cache format. This should be bumped whenever the # underlying logic changes. This removes the need for explicitly flushing # all caches. VERSION = 1 def initialize(project) @project = project end def relation_for_count self.class.query(@project.id) end def cache_key_name raise( NotImplementedError, '"cache_key_name" must be implemented and return a String' ) end def cache_key(key = nil) cache_key = key || cache_key_name ['projects', 'count_service', VERSION, @project.id, cache_key] end def self.query(project_ids) raise( NotImplementedError, '"query" must be implemented and return an ActiveRecord::Relation' ) end end end