Use Etag caching for pipelines json

Enable caching in the Etag::Middleware and when a pipeline changes
status, expire the cache for the project pipelines path.

1 files changed, 18 insertions, 0 deletions

diff --git a/spec/services/ci/expire_pipeline_cache_service_spec.rb b/spec/services/ci/expire_pipeline_cache_service_spec.rb
new file mode 100644
index 00000000000..b8250f99c5a
--- /dev/null
+++ b/spec/services/ci/expire_pipeline_cache_service_spec.rb
@@ -0,0 +1,18 @@
+require 'spec_helper'
+
+describe Ci::ExpirePipelineCacheService, services: true do
+  let(:user) { create(:user) }
+  let(:project) { create(:empty_project) }
+  let(:pipeline) { create(:ci_pipeline, project: project) }
+  subject { described_class.new(project, user) }
+
+  describe '#execute' do
+    it 'invalidate Etag caching for project pipelines path' do
+      path = "/#{project.full_path}/pipelines.json"
+
+      expect_any_instance_of(Gitlab::EtagCaching::Store).to receive(:touch).with(path)
+
+      subject.execute(pipeline)
+    end
+  end
+end