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Diffstat (limited to 'app/services/projects/batch_count_service.rb')
-rw-r--r--app/services/projects/batch_count_service.rb31
1 files changed, 31 insertions, 0 deletions
diff --git a/app/services/projects/batch_count_service.rb b/app/services/projects/batch_count_service.rb
new file mode 100644
index 00000000000..178ebc5a143
--- /dev/null
+++ b/app/services/projects/batch_count_service.rb
@@ -0,0 +1,31 @@
+# Service class for getting and caching the number of elements of several projects
+# Warning: do not user this service with a really large set of projects
+# because the service use maps to retrieve the project ids.
+module Projects
+ class BatchCountService
+ def initialize(projects)
+ @projects = projects
+ end
+
+ def refresh_cache
+ @projects.each do |project|
+ service = count_service.new(project)
+ unless service.count_stored?
+ service.refresh_cache { global_count[project.id].to_i }
+ end
+ end
+ end
+
+ def project_ids
+ @projects.map(&:id)
+ end
+
+ def global_count(project)
+ raise NotImplementedError, 'global_count must be implemented and return an hash indexed by the project id'
+ end
+
+ def count_service
+ raise NotImplementedError, 'count_service must be implemented and return a Projects::CountService object'
+ end
+ end
+end