Implement pipeline activity and size limits

ee/lib/ee/gitlab/ci/pipeline/chain/limit/activity.rb

+module EE
+  module Gitlab
+    module Ci
+      module Pipeline
+        module Chain
+          class Activity < ::Gitlab::Ci::Pipeline::Chain::Base
+            include ::Gitlab::Ci::Pipeline::Chain::Helpers
+
+            def initialize(*)
+              super
+
+              @limit = Pipeline::Quota::Activity
+                .new(project.namespace, pipeline.project)
+            end
+
+            def perform!
+              return unless @limit.exceeded?
+              return unless @command.save_incompleted
+
+              # TODO, add failure reason
+              # TODO, add validation error
+              @pipeline.drop
+            end
+
+            def break?
+              @limit.exceeded?
+            end
+          end
+        end
+      end
+    end
+  end
+end

ee/lib/ee/gitlab/ci/pipeline/chain/limit/size.rb

+module EE
+  module Gitlab
+    module Ci
+      module Pipeline
+        module Chain
+          class Size < ::Gitlab::Ci::Pipeline::Chain::Base
+            include ::Gitlab::Ci::Pipeline::Chain::Helpers
+
+            def initialize(*)
+              super
+
+              @limit = Pipeline::Quota::Size
+                .new(project.namespace, pipeline)
+            end
+
+            def perform!
+              return unless @limit.exceeded?
+              return unless @command.save_incompleted
+
+              # TODO, add failure reason
+              # TODO, add validation error
+              @pipeline.drop
+            end
+
+            def break?
+              @limit.exceeded?
+            end
+          end
+        end
+      end
+    end
+  end
+end