Prevent creating pipeline on free and trial plans without CC info

Return an error if user is not validated via add credit card info and
tries to create a pipeline on Free or trial plan.

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

@@ -10,6 +10,7 @@ module Enums
           unknown_failure: 0,
           config_error: 1,
           external_validation_failure: 2,
+          user_not_verified: 3,
           activity_limit_exceeded: 20,
           size_limit_exceeded: 21,
           job_activity_limit_exceeded: 22,

app/presenters/ci/pipeline_presenter.rb

@@ -11,6 +11,7 @@ module Ci
       { unknown_failure: 'The reason for the pipeline failure is unknown.',
         config_error: 'The pipeline failed due to an error on the CI/CD configuration file.',
         external_validation_failure: 'The external pipeline validation failed.',
+        user_not_verified: 'The pipeline failed due to the user not being verified',
         activity_limit_exceeded: 'The pipeline activity limit was exceeded.',
         size_limit_exceeded: 'The pipeline size limit was exceeded.',
         job_activity_limit_exceeded: 'The pipeline job activity limit was exceeded.',

config/feature_flags/development/ci_require_credit_card_on_free_plan.yml

+---
+name: ci_require_credit_card_on_free_plan
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61152 
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/330104
+milestone: '13.12'
+type: development
+group: group::continuous integration
+default_enabled: false

config/feature_flags/development/ci_require_credit_card_on_trial_plan.yml

+---
+name: ci_require_credit_card_on_trial_plan
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61152 
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/330105
+milestone: '13.12'
+type: development
+group: group::continuous integration
+default_enabled: false

ee/app/models/ee/user.rb

@@ -396,6 +396,27 @@ module EE
       !password_automatically_set?
     end
 
+    def has_valid_credit_card?
+      credit_card_validated_at.present?
+    end
+
+    def requires_credit_card_to_run_pipelines?(project)
+      return false unless ::Gitlab.com?
+
+      root_namespace = project.root_namespace
+      if root_namespace.free_plan?
+        ::Feature.enabled?(:ci_require_credit_card_on_free_plan, project, default_enabled: :yaml)
+      elsif root_namespace.trial?
+        ::Feature.enabled?(:ci_require_credit_card_on_trial_plan, project, default_enabled: :yaml)
+      else
+        false
+      end
+    end
+
+    def has_required_credit_card_to_run_pipelines?(project)
+      has_valid_credit_card? || !requires_credit_card_to_run_pipelines?(project)
+    end
+
     protected
 
     override :password_required?

ee/lib/ee/gitlab/ci/pipeline/chain/validate/abilities.rb

@@ -18,6 +18,10 @@ module EE
                   return error('Pipeline is disabled for mirror updates')
                 end
 
+                if current_user && !current_user.has_required_credit_card_to_run_pipelines?(project)
+                  return error('Credit card required to be on file in order to create a pipeline', drop_reason: :user_not_verified)
+                end
+
                 super
               end
             end

ee/spec/lib/ee/gitlab/ci/pipeline/chain/validate/abilities_spec.rb

@@ -19,10 +19,12 @@ RSpec.describe Gitlab::Ci::Pipeline::Chain::Validate::Abilities do
   let(:ref) { 'master' }
 
   describe '#perform!' do
-    context 'when triggering builds for project mirrors is disabled' do
-      it 'returns an error' do
+    before do
       project.add_developer(user)
+    end
 
+    context 'when triggering builds for project mirrors is disabled' do
+      it 'returns an error' do
         allow(command)
           .to receive(:allow_mirror_update)
           .and_return(true)
@@ -37,5 +39,40 @@ RSpec.describe Gitlab::Ci::Pipeline::Chain::Validate::Abilities do
           .to include('Pipeline is disabled for mirror updates')
       end
     end
+
+    describe 'credit card requirement' do
+      context 'when user does not have credit card for pipelines in project' do
+        before do
+          allow(user)
+            .to receive(:has_required_credit_card_to_run_pipelines?)
+            .with(project)
+            .and_return(false)
+        end
+
+        it 'breaks the chain with an error' do
+          step.perform!
+
+          expect(step.break?).to be_truthy
+          expect(pipeline.errors.to_a)
+            .to include('Credit card required to be on file in order to create a pipeline')
+        end
+      end
+
+      context 'when user has credit card for pipelines in project' do
+        before do
+          allow(user)
+            .to receive(:has_required_credit_card_to_run_pipelines?)
+            .with(project)
+            .and_return(true)
+        end
+
+        it 'succeeds the step' do
+          step.perform!
+
+          expect(step.break?).to be_falsey
+          expect(pipeline.errors).to be_empty
+        end
+      end
+    end
   end
 end

ee/spec/models/ee/user_spec.rb

@@ -1674,4 +1674,41 @@ RSpec.describe User do
       end
     end
   end
+
+  describe '#has_required_credit_card_to_run_pipelines?' do
+    let_it_be(:project) { create(:project) }
+
+    subject { user.has_required_credit_card_to_run_pipelines?(project) }
+
+    using RSpec::Parameterized::TableSyntax
+
+    where(:is_saas, :cc_present, :is_free, :is_trial, :free_ff_enabled, :trial_ff_enabled, :result) do
+      # self-hosted
+      false | false | false | false | true  | true  | true  # paid plan
+      false | false | false | true  | true  | true  | true  # missing CC on trial plan
+
+      # saas
+      true  | false | false | false | true  | true  | true  # missing CC on paid plan
+      true  | false | true  | false | true  | true  | false # missing CC on free plan
+      true  | false | true  | false | false | true  | true  # missing CC on free plan - FF off
+      true  | false | false | true  | true  | true  | false # missing CC on trial plan
+      true  | false | false | true  | true  | false | true  # missing CC on trial plan - FF off
+      true  | true  | true  | false | true  | true  | true  # present CC on free plan
+      true  | true  | false | true  | true  | true  | true  # present CC on trial plan
+    end
+
+    with_them do
+      before do
+        allow(::Gitlab).to receive(:com?).and_return(is_saas)
+        allow(user).to receive(:credit_card_validated_at).and_return(Time.current) if cc_present
+        allow(project.namespace).to receive(:free_plan?).and_return(is_free)
+        allow(project.namespace).to receive(:trial?).and_return(is_trial)
+        stub_feature_flags(
+          ci_require_credit_card_on_free_plan: free_ff_enabled,
+          ci_require_credit_card_on_trial_plan: trial_ff_enabled)
+      end
+
+      it { is_expected.to eq(result) }
+    end
+  end
 end

ee/spec/services/ci/create_pipeline_service_spec.rb

@@ -173,6 +173,54 @@ RSpec.describe Ci::CreatePipelineService, '#execute' do
     end
   end
 
+  describe 'credit card requirement' do
+    shared_examples 'creates a successful pipeline' do
+      it 'creates a successful pipeline' do
+        pipeline = create_pipeline!
+
+        expect(pipeline).to be_created_successfully
+      end
+    end
+
+    context 'when credit card is required' do
+      context 'when project is on free plan' do
+        before do
+          allow(::Gitlab).to receive(:com?).and_return(true)
+          namespace.gitlab_subscription.update!(hosted_plan: create(:free_plan))
+        end
+
+        context 'when user has credit card' do
+          before do
+            allow(user).to receive(:credit_card_validated_at).and_return(Time.current)
+          end
+
+          it_behaves_like 'creates a successful pipeline'
+        end
+
+        context 'when user does not have credit card' do
+          it 'creates a pipeline with errors', :aggregate_failures do
+            pipeline = create_pipeline!
+
+            expect(pipeline).not_to be_created_successfully
+            expect(pipeline.failure_reason).to eq('user_not_verified')
+          end
+
+          context 'when feature flag is disabled' do
+            before do
+              stub_feature_flags(ci_require_credit_card_on_free_plan: false)
+            end
+
+            it_behaves_like 'creates a successful pipeline'
+          end
+        end
+      end
+    end
+
+    context 'when credit card is not required' do
+      it_behaves_like 'creates a successful pipeline'
+    end
+  end
+
   def create_pipeline!
     service.execute(:push)
   end