Merge branch 'sh-avoid-build-hooks-data' into 'master'

Reduce SQL queries when no pipeline hooks are active

See merge request gitlab-org/gitlab!49186

app/models/ci/pipeline.rb

@@ -831,9 +831,8 @@ module Ci
     end
 
     def execute_hooks
-      data = pipeline_data
-      project.execute_hooks(data, :pipeline_hooks)
-      project.execute_services(data, :pipeline_hooks)
+      project.execute_hooks(pipeline_data, :pipeline_hooks) if project.has_active_hooks?(:pipeline_hooks)
+      project.execute_services(pipeline_data, :pipeline_hooks) if project.has_active_services?(:pipeline_hooks)
     end
 
     # All the merge requests for which the current pipeline runs/ran against
@@ -1159,7 +1158,9 @@ module Ci
     end
 
     def pipeline_data
-      Gitlab::DataBuilder::Pipeline.build(self)
+      strong_memoize(:pipeline_data) do
+        Gitlab::DataBuilder::Pipeline.build(self)
+      end
     end
 
     def merge_request_diff_sha

changelogs/unreleased/sh-avoid-build-hooks-data.yml

+---
+title: Reduce SQL queries when no pipeline hooks are active
+merge_request: 49186
+author:
+type: performance

spec/models/ci/pipeline_spec.rb

@@ -2578,6 +2578,14 @@ RSpec.describe Ci::Pipeline, :mailer, factory_default: :keep do
           it 'receives a pending event once' do
             expect(WebMock).to have_requested_pipeline_hook('pending').once
           end
+
+          it 'builds hook data once' do
+            create(:pipelines_email_service, project: project)
+
+            expect(Gitlab::DataBuilder::Pipeline).to receive(:build).once.and_call_original
+
+            pipeline.execute_hooks
+          end
         end
 
         context 'when build is run' do
@@ -2639,6 +2647,12 @@ RSpec.describe Ci::Pipeline, :mailer, factory_default: :keep do
       it 'did not execute pipeline_hook after touched' do
         expect(WebMock).not_to have_requested(:post, hook.url)
       end
+
+      it 'does not build hook data' do
+        expect(Gitlab::DataBuilder::Pipeline).not_to receive(:build)
+
+        pipeline.execute_hooks
+      end
     end
 
     def create_build(name, stage_idx)