Allow canceling all pipelines with auto-cancel

This is behind a FF ci_auto_cancel_all_pipelines

app/models/ci/pipeline.rb

@@ -277,6 +277,7 @@ module Ci
     scope :internal, -> { where(source: internal_sources) }
     scope :no_child, -> { where.not(source: :parent_pipeline) }
     scope :ci_sources, -> { where(source: Enums::Ci::Pipeline.ci_sources.values) }
+    scope :ci_and_parent_sources, -> { where(source: Enums::Ci::Pipeline.ci_and_parent_sources.values) }
     scope :for_user, -> (user) { where(user: user) }
     scope :for_sha, -> (sha) { where(sha: sha) }
     scope :for_source_sha, -> (source_sha) { where(source_sha: source_sha) }

app/models/concerns/enums/ci/pipeline.rb

@@ -53,6 +53,10 @@ module Enums
         sources.except(*dangling_sources.keys)
       end
 
+      def self.ci_and_parent_sources
+        ci_sources.merge(sources.slice(:parent_pipeline))
+      end
+
       # Returns the `Hash` to use for creating the `config_sources` enum for
       # `Ci::Pipeline`.
       def self.config_sources

config/feature_flags/development/ci_auto_cancel_all_pipelines.yml

+---
+name: ci_auto_cancel_all_pipelines
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/46686
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/275997
+milestone: '13.6'
+type: development
+group: group::pipeline authoring
+default_enabled: false

lib/gitlab/ci/pipeline/chain/cancel_pending_pipelines.rb

@@ -25,7 +25,7 @@ module Gitlab
 
           # rubocop: disable CodeReuse/ActiveRecord
           def auto_cancelable_pipelines
-            project.ci_pipelines
+            pipelines
               .where(ref: pipeline.ref)
               .where.not(id: pipeline.same_family_pipeline_ids)
               .where.not(sha: project.commit(pipeline.ref).try(:id))
@@ -33,6 +33,14 @@ module Gitlab
               .with_only_interruptible_builds
           end
           # rubocop: enable CodeReuse/ActiveRecord
+
+          def pipelines
+            if ::Feature.enabled?(:ci_auto_cancel_all_pipelines, project, default_enabled: false)
+              project.all_pipelines.ci_and_parent_sources
+            else
+              project.ci_pipelines
+            end
+          end
         end
       end
     end

spec/factories/ci/builds.rb

@@ -514,5 +514,11 @@ FactoryBot.define do
         build.build_runner_session(url: 'https://localhost')
       end
     end
+
+    trait :interruptible do
+      after(:build) do |build|
+        build.metadata.interruptible = true
+      end
+    end
   end
 end

spec/lib/gitlab/ci/pipeline/chain/cancel_pending_pipelines_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Ci::Pipeline::Chain::CancelPendingPipelines do
+  let_it_be(:project) { create(:project) }
+  let_it_be(:user) { create(:user) }
+  let(:prev_pipeline) { create(:ci_pipeline, project: project) }
+  let(:new_commit) { create(:commit, project: project) }
+  let(:pipeline) { create(:ci_pipeline, project: project, sha: new_commit.sha) }
+
+  let(:command) do
+    Gitlab::Ci::Pipeline::Chain::Command.new(project: project, current_user: user)
+  end
+
+  let(:step) { described_class.new(pipeline, command) }
+
+  before do
+    create(:ci_build, :interruptible, :running, pipeline: prev_pipeline)
+    create(:ci_build, :interruptible, :success, pipeline: prev_pipeline)
+    create(:ci_build, :created, pipeline: prev_pipeline)
+
+    create(:ci_build, :interruptible, pipeline: pipeline)
+  end
+
+  describe '#perform!' do
+    subject(:perform) { step.perform! }
+
+    before do
+      expect(build_statuses(prev_pipeline)).to contain_exactly('running', 'success', 'created')
+      expect(build_statuses(pipeline)).to contain_exactly('pending')
+    end
+
+    context 'when auto-cancel is enabled' do
+      before do
+        project.update!(auto_cancel_pending_pipelines: 'enabled')
+      end
+
+      it 'cancels only previous interruptible builds' do
+        perform
+
+        expect(build_statuses(prev_pipeline)).to contain_exactly('canceled', 'success', 'canceled')
+        expect(build_statuses(pipeline)).to contain_exactly('pending')
+      end
+
+      context 'when the previous pipeline has a child pipeline' do
+        let(:child_pipeline) { create(:ci_pipeline, child_of: prev_pipeline) }
+
+        context 'when the child pipeline has an interruptible job' do
+          before do
+            create(:ci_build, :interruptible, :running, pipeline: child_pipeline)
+          end
+
+          it 'cancels interruptible builds of child pipeline' do
+            expect(build_statuses(child_pipeline)).to contain_exactly('running')
+
+            perform
+
+            expect(build_statuses(child_pipeline)).to contain_exactly('canceled')
+          end
+
+          context 'when FF ci_auto_cancel_all_pipelines is disabled' do
+            before do
+              stub_feature_flags(ci_auto_cancel_all_pipelines: false)
+            end
+
+            it 'does not cancel interruptible builds of child pipeline' do
+              expect(build_statuses(child_pipeline)).to contain_exactly('running')
+
+              perform
+
+              expect(build_statuses(child_pipeline)).to contain_exactly('running')
+            end
+          end
+        end
+
+        context 'when the child pipeline has not an interruptible job' do
+          before do
+            create(:ci_build, :running, pipeline: child_pipeline)
+          end
+
+          it 'does not cancel the build of child pipeline' do
+            expect(build_statuses(child_pipeline)).to contain_exactly('running')
+
+            perform
+
+            expect(build_statuses(child_pipeline)).to contain_exactly('running')
+          end
+        end
+      end
+
+      context 'when the prev pipeline source is webide' do
+        let(:prev_pipeline) { create(:ci_pipeline, :webide, project: project) }
+
+        it 'does not cancel builds of the previous pipeline' do
+          perform
+
+          expect(build_statuses(prev_pipeline)).to contain_exactly('created', 'running', 'success')
+          expect(build_statuses(pipeline)).to contain_exactly('pending')
+        end
+      end
+    end
+
+    context 'when auto-cancel is disabled' do
+      before do
+        project.update!(auto_cancel_pending_pipelines: 'disabled')
+      end
+
+      it 'does not cancel any build' do
+        subject
+
+        expect(build_statuses(prev_pipeline)).to contain_exactly('running', 'success', 'created')
+        expect(build_statuses(pipeline)).to contain_exactly('pending')
+      end
+    end
+  end
+
+  private
+
+  def build_statuses(pipeline)
+    pipeline.builds.pluck(:status)
+  end
+end