Move $CI_DEPLOY_FREEZE variable calculation to pipeline

Closes https://gitlab.com/gitlab-org/gitlab/issues/220944

See merge request https://gitlab.com/gitlab-org/gitlab/merge_requests/35226

app/models/ci/build.rb

@@ -539,7 +539,6 @@ module Ci
           .concat(job_variables)
           .concat(environment_changed_page_variables)
           .concat(persisted_environment_variables)
-          .concat(deploy_freeze_variables)
           .to_runner_variables
       end
     end
@@ -595,18 +594,6 @@ module Ci
       end
     end
 
-    def deploy_freeze_variables
-      Gitlab::Ci::Variables::Collection.new.tap do |variables|
-        break variables unless freeze_period?
-
-        variables.append(key: 'CI_DEPLOY_FREEZE', value: 'true')
-      end
-    end
-
-    def freeze_period?
-      Ci::FreezePeriodStatus.new(project: project).execute
-    end
-
     def dependency_variables
       return [] if all_dependencies.empty?
 

app/models/ci/pipeline.rb

@@ -604,6 +604,10 @@ module Ci
       project.deployment_platform&.active?
     end
 
+    def freeze_period?
+      Ci::FreezePeriodStatus.new(project: project).execute
+    end
+
     def has_warnings?
       number_of_warnings.positive?
     end
@@ -714,6 +718,7 @@ module Ci
         end
 
         variables.append(key: 'CI_KUBERNETES_ACTIVE', value: 'true') if has_kubernetes_active?
+        variables.append(key: 'CI_DEPLOY_FREEZE', value: 'true') if freeze_period?
 
         if external_pull_request_event? && external_pull_request
           variables.concat(external_pull_request.predefined_variables)

changelogs/unreleased/220944-docs-product-feedback-example-for-set-a-deploy-freeze-seems-wrong.yml

+---
+title: Properly set CI_DEPLOY_FREEZE variable in pipelines
+merge_request: 35226
+author:
+type: fixed

spec/models/ci/build_spec.rb

@@ -2974,19 +2974,6 @@ RSpec.describe Ci::Build do
       it { is_expected.to include(deployment_variable) }
     end
 
-    context 'when build has a freeze period' do
-      let(:freeze_variable) { { key: 'CI_DEPLOY_FREEZE', value: 'true', masked: false, public: true } }
-
-      before do
-        expect_next_instance_of(Ci::FreezePeriodStatus) do |freeze_period|
-          expect(freeze_period).to receive(:execute)
-            .and_return(true)
-        end
-      end
-
-      it { is_expected.to include(freeze_variable) }
-    end
-
     context 'when project has default CI config path' do
       let(:ci_config_path) { { key: 'CI_CONFIG_PATH', value: '.gitlab-ci.yml', public: true, masked: false } }
 

spec/services/ci/create_pipeline_service_spec.rb

@@ -2205,6 +2205,83 @@ RSpec.describe Ci::CreatePipelineService do
           expect(find_job('job-7').when).to eq('on_failure')
         end
       end
+
+      context 'with deploy freeze period `if:` clause' do
+        # '0 23 * * 5' == "At 23:00 on Friday."", '0 7 * * 1' == "At 07:00 on Monday.""
+        let!(:freeze_period) { create(:ci_freeze_period, project: project, freeze_start: '0 23 * * 5', freeze_end: '0 7 * * 1') }
+
+        context 'with 2 jobs' do
+          let(:config) do
+            <<-EOY
+            stages:
+              - test
+              - deploy
+
+            test-job:
+              script:
+                - echo 'running TEST stage'
+
+            deploy-job:
+              stage: deploy
+              script:
+                - echo 'running DEPLOY stage'
+              rules:
+                - if: $CI_DEPLOY_FREEZE == null
+            EOY
+          end
+
+          context 'when outside freeze period' do
+            Timecop.freeze(2020, 4, 10, 22, 59) do
+              it 'creates two jobs' do
+                expect(pipeline).to be_persisted
+                expect(build_names).to contain_exactly('test-job', 'deploy-job')
+              end
+            end
+          end
+
+          context 'when inside freeze period' do
+            it 'creates one job' do
+              Timecop.freeze(2020, 4, 10, 23, 1) do
+                expect(pipeline).to be_persisted
+                expect(build_names).to contain_exactly('test-job')
+              end
+            end
+          end
+        end
+
+        context 'with 1 job' do
+          let(:config) do
+            <<-EOY
+            stages:
+              - deploy
+
+            deploy-job:
+              stage: deploy
+              script:
+                - echo 'running DEPLOY stage'
+              rules:
+                - if: $CI_DEPLOY_FREEZE == null
+            EOY
+          end
+
+          context 'when outside freeze period' do
+            Timecop.freeze(2020, 4, 10, 22, 59) do
+              it 'creates two jobs' do
+                expect(pipeline).to be_persisted
+                expect(build_names).to contain_exactly('deploy-job')
+              end
+            end
+          end
+
+          context 'when inside freeze period' do
+            it 'does not create the pipeline' do
+              Timecop.freeze(2020, 4, 10, 23, 1) do
+                expect(pipeline).not_to be_persisted
+              end
+            end
+          end
+        end
+      end
     end
   end