Revert "Merge branch 'add-parent-child-pipeline-limitations' into 'master'"

This reverts merge request !21817

ee/app/models/ee/commit_status_enums.rb

@@ -14,8 +14,7 @@ module EE
                     downstream_bridge_project_not_found: 1_002,
                     invalid_bridge_trigger: 1_003,
                     upstream_bridge_project_not_found: 1_004,
-                    insufficient_upstream_permissions: 1_005,
-                    bridge_pipeline_is_child_pipeline: 1_006)
+                    insufficient_upstream_permissions: 1_005)
       end
     end
   end

ee/app/presenters/ee/commit_status_presenter.rb

@@ -10,8 +10,7 @@ module EE
         insufficient_upstream_permissions: 'This job could not be executed because of insufficient permissions to track the upstream project.',
         downstream_bridge_project_not_found: 'This job could not be executed because downstream bridge project could not be found.',
         upstream_bridge_project_not_found: 'This job could not be executed because upstream bridge project could not be found.',
-        invalid_bridge_trigger: 'This job could not be executed because downstream pipeline trigger definition is invalid.',
-        bridge_pipeline_is_child_pipeline: 'This job belongs to a child pipeline and cannot create further child pipelines.'
+        invalid_bridge_trigger: 'This job could not be executed because downstream pipeline trigger definition is invalid.'
       ).freeze
 
       EE::CommitStatusPresenter.private_constant :EE_CALLOUT_FAILURE_MESSAGES

ee/app/services/ci/create_cross_project_pipeline_service.rb

@@ -45,13 +45,6 @@ module Ci
         return false
       end
 
-      # TODO: Remove this condition if favour of model validation
-      # https://gitlab.com/gitlab-org/gitlab/issues/38338
-      if @bridge.triggers_child_pipeline? && @bridge.pipeline.parent_pipeline.present?
-        @bridge.drop!(:bridge_pipeline_is_child_pipeline)
-        return false
-      end
-
       unless can_create_downstream_pipeline?(target_ref)
         @bridge.drop!(:insufficient_bridge_permissions)
         return false

ee/changelogs/unreleased/add-parent-child-pipeline-limitations.yml

----
-title: Prevent a child pipeline to create further child pipelines
-merge_request: 21817
-author:
-type: added

ee/lib/ee/gitlab/ci/config/entry/trigger.rb

@@ -51,7 +51,6 @@ module EE
                 include ::Gitlab::Config::Entry::Attributable
                 include ::Gitlab::Config::Entry::Configurable
 
-                INCLUDE_MAX_SIZE = 3
                 ALLOWED_KEYS = %i[strategy include].freeze
                 attributes :strategy
 
@@ -63,8 +62,7 @@ module EE
 
                 entry :include, ::Gitlab::Ci::Config::Entry::Includes,
                   description: 'List of external YAML files to include.',
-                  reserved: true,
-                  metadata: { max_size: INCLUDE_MAX_SIZE }
+                  reserved: true
 
                 def value
                   @config

ee/lib/ee/gitlab/ci/status/build/failed.rb

@@ -15,8 +15,7 @@ module EE
                 downstream_bridge_project_not_found: 'downstream project could not be found',
                 upstream_bridge_project_not_found: 'upstream project could not be found',
                 insufficient_bridge_permissions: 'no permissions to trigger downstream pipeline',
-                insufficient_upstream_permissions: 'no permissions to read upstream project',
-                bridge_pipeline_is_child_pipeline: 'creation of child pipeline not allowed from another child pipeline'
+                insufficient_upstream_permissions: 'no permissions to read upstream project'
               ).freeze
               EE::Gitlab::Ci::Status::Build::Failed.private_constant :EE_REASONS
             end

ee/spec/lib/ee/gitlab/ci/config/entry/trigger_spec.rb

@@ -13,7 +13,7 @@ describe EE::Gitlab::Ci::Config::Entry::Trigger do
     end
 
     describe '#value' do
-      it 'returns a trigger configuration hash' do
+      it 'is returns a trigger configuration hash' do
         expect(subject.value).to eq(project: 'some/project')
       end
     end
@@ -27,7 +27,7 @@ describe EE::Gitlab::Ci::Config::Entry::Trigger do
     end
 
     describe '#errors' do
-      it 'returns an error about an empty config' do
+      it 'is returns an error about an empty config' do
         expect(subject.errors.first)
           .to match /config can't be blank/
       end
@@ -43,7 +43,7 @@ describe EE::Gitlab::Ci::Config::Entry::Trigger do
       end
 
       describe '#value' do
-        it 'returns a trigger configuration hash' do
+        it 'is returns a trigger configuration hash' do
           expect(subject.value)
             .to eq(project: 'some/project', branch: 'feature')
         end
@@ -59,7 +59,7 @@ describe EE::Gitlab::Ci::Config::Entry::Trigger do
         end
 
         describe '#value' do
-          it 'returns a trigger configuration hash' do
+          it 'is returns a trigger configuration hash' do
             expect(subject.value)
               .to eq(project: 'some/project', strategy: 'depend')
           end
@@ -74,7 +74,7 @@ describe EE::Gitlab::Ci::Config::Entry::Trigger do
         end
 
         describe '#errors' do
-          it 'returns an error about unknown config key' do
+          it 'is returns an error about unknown config key' do
             expect(subject.errors.first)
               .to match /trigger strategy should be depend/
           end
@@ -98,7 +98,7 @@ describe EE::Gitlab::Ci::Config::Entry::Trigger do
 
         it { is_expected.not_to be_valid }
 
-        it 'returns an error' do
+        it 'is returns an error' do
           expect(subject.errors.first)
             .to match /config contains unknown keys: project/
         end
@@ -109,7 +109,7 @@ describe EE::Gitlab::Ci::Config::Entry::Trigger do
 
         it { is_expected.not_to be_valid }
 
-        it 'returns an error' do
+        it 'is returns an error' do
           expect(subject.errors.first)
             .to match /config contains unknown keys: branch/
         end
@@ -137,7 +137,7 @@ describe EE::Gitlab::Ci::Config::Entry::Trigger do
       end
 
       describe '#errors' do
-        it 'returns an error about unknown config key' do
+        it 'is returns an error about unknown config key' do
           expect(subject.errors.first)
             .to match /config contains unknown keys: unknown/
         end

ee/spec/services/ci/create_cross_project_pipeline_service_spec.rb

@@ -217,27 +217,6 @@ describe Ci::CreateCrossProjectPipelineService, '#execute' do
           # it does not auto-cancel pipelines from the same family
           it_behaves_like 'creates a child pipeline'
         end
-
-        context 'when upstream pipeline is a child pipeline' do
-          let!(:pipeline_source) do
-            create(:ci_sources_pipeline,
-              source_pipeline: create(:ci_pipeline, project: upstream_pipeline.project),
-              pipeline: upstream_pipeline
-            )
-          end
-
-          before do
-            upstream_pipeline.update!(source: :parent_pipeline)
-          end
-
-          it 'does not create a further child pipeline' do
-            expect { service.execute(bridge) }
-              .not_to change { Ci::Pipeline.count }
-
-            expect(bridge.reload).to be_failed
-            expect(bridge.failure_reason).to eq 'bridge_pipeline_is_child_pipeline'
-          end
-        end
       end
     end
 

ee/spec/services/ci/create_pipeline_service_spec.rb

@@ -177,77 +177,6 @@ describe Ci::CreatePipelineService, '#execute' do
     end
   end
 
-  describe 'child pipeline triggers' do
-    context 'when YAML is valid' do
-      before do
-        stub_ci_pipeline_yaml_file <<~YAML
-          test:
-            script: rspec
-
-          deploy:
-            variables:
-              CROSS: downstream
-            stage: deploy
-            trigger:
-              include:
-                - local: path/to/child.yml
-        YAML
-      end
-
-      it 'creates bridge jobs correctly' do
-        pipeline = create_pipeline!
-
-        test = pipeline.statuses.find_by(name: 'test')
-        bridge = pipeline.statuses.find_by(name: 'deploy')
-
-        expect(pipeline).to be_persisted
-        expect(test).to be_a Ci::Build
-        expect(bridge).to be_a Ci::Bridge
-        expect(bridge.stage).to eq 'deploy'
-        expect(pipeline.statuses).to match_array [test, bridge]
-        expect(bridge.options).to eq(
-          'trigger' => { 'include' => [{ 'local' => 'path/to/child.yml' }] }
-        )
-        expect(bridge.yaml_variables)
-          .to include(key: 'CROSS', value: 'downstream', public: true)
-      end
-    end
-
-    context 'when YAML is invalid' do
-      let(:config) do
-        {
-          test: { script: 'rspec' },
-          deploy: {
-            trigger: { include: included_files }
-          }
-        }
-      end
-
-      let(:included_files) do
-        Array.new(include_max_size + 1) do |index|
-          { local: "file#{index}.yml" }
-        end
-      end
-
-      let(:include_max_size) do
-        EE::Gitlab::Ci::Config::Entry::Trigger::ComplexTrigger::SameProjectTrigger::INCLUDE_MAX_SIZE
-      end
-
-      before do
-        stub_ci_pipeline_yaml_file(YAML.dump(config))
-      end
-
-      it 'returns errors' do
-        pipeline = create_pipeline!
-
-        expect(pipeline.errors.full_messages.first).to match(/trigger:include config is too long/)
-        expect(pipeline.failure_reason).to eq 'config_error'
-        expect(pipeline).to be_persisted
-        expect(pipeline.status).to eq 'failed'
-      end
-    end
-  end
-
   def create_pipeline!
     service.execute(:push)
   end

lib/gitlab/ci/config/entry/includes.rb

@@ -12,15 +12,6 @@ module Gitlab
 
           validations do
             validates :config, array_or_string: true
-
-            validate do
-              next unless opt(:max_size)
-              next unless config.is_a?(Array)
-
-              if config.size > opt(:max_size)
-                errors.add(:config, "is too long (maximum is #{opt(:max_size)})")
-              end
-            end
           end
 
           def self.aspects