fix(pipelines): generates warning since CDK 2.128.0 due to addition of v2 pipeline support in aws-codepipeline

packages/aws-cdk-lib/pipelines/README.md

@@ -12,8 +12,9 @@ cluster directly: use CDK file assets with CloudFormation Init for instances, or
 CDK container assets for ECS clusters instead.
 
 Give the CDK Pipelines way of doing things a shot first: you might find it does
-everything you need. If you want or need more control, we recommend you drop
-down to using the `aws-codepipeline` construct library directly.
+everything you need. If you need more control, or if you need `v2` support from
+`aws-codepipeline`, we recommend you drop down to using the `aws-codepipeline` 
+construct library directly.
 
 > This module contains two sets of APIs: an **original** and a **modern** version of
 > CDK Pipelines. The *modern* API has been updated to be easier to work with and

packages/aws-cdk-lib/pipelines/lib/codepipeline/codepipeline.ts

@@ -467,6 +467,7 @@ export class CodePipeline extends PipelineBase {
     } else {
       this._pipeline = new cp.Pipeline(this, 'Pipeline', {
         pipelineName: this.props.pipelineName,
+        pipelineType: cp.PipelineType.V1,
         crossAccountKeys: this.props.crossAccountKeys ?? false,
         crossRegionReplicationBuckets: this.props.crossRegionReplicationBuckets,
         reuseCrossRegionSupportStacks: this.props.reuseCrossRegionSupportStacks,

packages/aws-cdk-lib/pipelines/test/codepipeline/codepipeline.test.ts

@@ -174,6 +174,8 @@ test('Policy sizes do not exceed the maximum size', () => {
   // expect template size warning
   const annotations = Annotations.fromStack(pipelineStack);
   annotations.hasWarning('*', Match.stringLikeRegexp('^Template size is approaching limit'));
+  const warnings = annotations.findWarning('*', Match.anyValue());
+  expect(warnings.length).toEqual(1);
 });
 
 test('CodeBuild action role has the right AssumeRolePolicyDocument', () => {