Swap FK ci_sources_pipelines to projects for LFK

Removes FK for ci_sources_pipelines to projects

Changelog: changed

db/post_migrate/20220119143130_remove_projects_ci_sources_pipelines_source_project_id_fk.rb

+# frozen_string_literal: true
+
+class RemoveProjectsCiSourcesPipelinesSourceProjectIdFk < Gitlab::Database::Migration[1.0]
+  disable_ddl_transaction!
+
+  def up
+    with_lock_retries do
+      execute('LOCK projects, ci_sources_pipelines IN ACCESS EXCLUSIVE MODE')
+
+      remove_foreign_key_if_exists(:ci_sources_pipelines, :projects, name: "fk_acd9737679")
+    end
+  end
+
+  def down
+    add_concurrent_foreign_key(:ci_sources_pipelines, :projects, name: "fk_acd9737679", column: :source_project_id, target_column: :id, on_delete: :cascade)
+  end
+end

db/schema_migrations/20220119143130

+a375f82fe0c1ef87aa6abb2142387b852b135be6e2158fd8456b23dc9bcf2a0e
\ No newline at end of file

db/structure.sql

@@ -29692,9 +29692,6 @@ ALTER TABLE ONLY boards
 ALTER TABLE ONLY member_tasks
     ADD CONSTRAINT fk_ab636303dd FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE;
 
-ALTER TABLE ONLY ci_sources_pipelines
-    ADD CONSTRAINT fk_acd9737679 FOREIGN KEY (source_project_id) REFERENCES projects(id) ON DELETE CASCADE;
-
 ALTER TABLE ONLY merge_requests
     ADD CONSTRAINT fk_ad525e1f87 FOREIGN KEY (merge_user_id) REFERENCES users(id) ON DELETE SET NULL;
 

lib/gitlab/database/gitlab_loose_foreign_keys.yml

@@ -158,3 +158,7 @@ ci_pipeline_artifacts:
   - table: projects
     column: project_id
     on_delete: async_delete
+ci_sources_pipelines:
+  - table: projects
+    column: source_project_id
+    on_delete: async_delete

spec/lib/gitlab/database/no_cross_db_foreign_keys_spec.rb

@@ -34,7 +34,6 @@ RSpec.describe 'cross-database foreign keys' do
       ci_runner_projects.project_id
       ci_running_builds.project_id
       ci_sources_pipelines.project_id
-      ci_sources_pipelines.source_project_id
       ci_sources_projects.source_project_id
       ci_stages.project_id
       ci_subscriptions_projects.downstream_project_id

spec/models/ci/sources/pipeline_spec.rb

@@ -17,4 +17,11 @@ RSpec.describe Ci::Sources::Pipeline do
   it { is_expected.to validate_presence_of(:source_project) }
   it { is_expected.to validate_presence_of(:source_job) }
   it { is_expected.to validate_presence_of(:source_pipeline) }
+
+  context 'loose foreign key on ci_sources_pipelines.source_project_id' do
+    it_behaves_like 'cleanup by a loose foreign key' do
+      let!(:parent) { create(:project) }
+      let!(:model) { create(:ci_sources_pipeline, source_project: parent) }
+    end
+  end
 end