feat(ecr): tag pattern list for lifecycle policy (aws#28432)

This PR supports `tagPatternList` for the lifecycle policy.

According to the doc, the lifecycle policy has following evaluation rules:

> A lifecycle policy rule may specify either tagPatternList or tagPrefixList, but not both. 

> The tagPatternList or tagPrefixList parameters may only used if the tagStatus is tagged.

> There is a maximum limit of four wildcards (\*) per string. For example, ["\*test\*1\*2\*3", "test\*1\*2\*3\*"] is valid but ["test\*1\*2\*3\*4\*5\*6"] is invalid.

https://docs.aws.amazon.com/AmazonECR/latest/userguide/LifecyclePolicies.html#lp_tag_pattern_list

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

packages/@aws-cdk-testing/framework-integ/test/aws-ecr/test/integ.basic.js.snapshot/aws-ecr-integ-stack.template.json

@@ -4,7 +4,7 @@
    "Type": "AWS::ECR::Repository",
    "Properties": {
     "LifecyclePolicy": {
-     "LifecyclePolicyText": "{\"rules\":[{\"rulePriority\":1,\"selection\":{\"tagStatus\":\"any\",\"countType\":\"imageCountMoreThan\",\"countNumber\":5},\"action\":{\"type\":\"expire\"}}]}"
+     "LifecyclePolicyText": "{\"rules\":[{\"rulePriority\":1,\"selection\":{\"tagStatus\":\"tagged\",\"tagPrefixList\":[\"abc\"],\"countType\":\"imageCountMoreThan\",\"countNumber\":3},\"action\":{\"type\":\"expire\"}},{\"rulePriority\":2,\"selection\":{\"tagStatus\":\"tagged\",\"tagPatternList\":[\"abc*\"],\"countType\":\"imageCountMoreThan\",\"countNumber\":3},\"action\":{\"type\":\"expire\"}},{\"rulePriority\":3,\"selection\":{\"tagStatus\":\"any\",\"countType\":\"imageCountMoreThan\",\"countNumber\":5},\"action\":{\"type\":\"expire\"}}]}"
     },
     "RepositoryPolicyText": {
      "Statement": [

packages/@aws-cdk-testing/framework-integ/test/aws-ecr/test/integ.basic.ts

@@ -8,6 +8,8 @@ const stack = new cdk.Stack(app, 'aws-ecr-integ-stack');
 
 const repo = new ecr.Repository(stack, 'Repo');
 repo.addLifecycleRule({ maxImageCount: 5 });
+repo.addLifecycleRule({ tagPrefixList: ['abc'], maxImageCount: 3 });
+repo.addLifecycleRule({ tagPatternList: ['abc*'], maxImageCount: 3 });
 repo.addToResourcePolicy(new iam.PolicyStatement({
   actions: ['ecr:GetDownloadUrlForLayer'],
   principals: [new iam.AnyPrincipal()],

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

@@ -167,6 +167,14 @@ repository.addLifecycleRule({ tagPrefixList: ['prod'], maxImageCount: 9999 });
 repository.addLifecycleRule({ maxImageAge: Duration.days(30) });
 ```
 
+When using `tagPatternList`, an image is successfully matched if it matches
+the wildcard filter.
+
+```ts
+declare const repository: ecr.Repository;
+repository.addLifecycleRule({ tagPatternList: ['prod*'], maxImageCount: 9999 });
+```
+
 ### Repository deletion
 
 When a repository is removed from a stack (or the stack is deleted), the ECR

packages/aws-cdk-lib/aws-ecr/lib/lifecycle.ts

@@ -33,17 +33,35 @@ export interface LifecycleRule {
    * Only one rule is allowed to select untagged images, and it must
    * have the highest rulePriority.
    *
-   * @default TagStatus.Tagged if tagPrefixList is given, TagStatus.Any otherwise
+   * @default TagStatus.Tagged if tagPrefixList or tagPatternList is
+   * given, TagStatus.Any otherwise
    */
   readonly tagStatus?: TagStatus;
 
   /**
    * Select images that have ALL the given prefixes in their tag.
    *
+   * Both tagPrefixList and tagPatternList cannot be specified
+   * together in a rule.
+   *
    * Only if tagStatus == TagStatus.Tagged
    */
   readonly tagPrefixList?: string[];
 
+  /**
+   * Select images that have ALL the given patterns in their tag.
+   *
+   * There is a maximum limit of four wildcards (*) per string.
+   * For example, ["*test*1*2*3", "test*1*2*3*"] is valid but
+   * ["test*1*2*3*4*5*6"] is invalid.
+   *
+   * Both tagPrefixList and tagPatternList cannot be specified
+   * together in a rule.
+   *
+   * Only if tagStatus == TagStatus.Tagged
+   */
+  readonly tagPatternList?: string[];
+
   /**
    * The maximum number of images to retain
    *

packages/aws-cdk-lib/aws-ecr/lib/repository.ts

@@ -769,14 +769,28 @@ export class Repository extends RepositoryBase {
   public addLifecycleRule(rule: LifecycleRule) {
     // Validate rule here so users get errors at the expected location
     if (rule.tagStatus === undefined) {
-      rule = { ...rule, tagStatus: rule.tagPrefixList === undefined ? TagStatus.ANY : TagStatus.TAGGED };
+      rule = { ...rule, tagStatus: rule.tagPrefixList === undefined && rule.tagPatternList === undefined ? TagStatus.ANY : TagStatus.TAGGED };
     }
 
-    if (rule.tagStatus === TagStatus.TAGGED && (rule.tagPrefixList === undefined || rule.tagPrefixList.length === 0)) {
-      throw new Error('TagStatus.Tagged requires the specification of a tagPrefixList');
+    if (rule.tagStatus === TagStatus.TAGGED
+      && (rule.tagPrefixList === undefined || rule.tagPrefixList.length === 0)
+      && (rule.tagPatternList === undefined || rule.tagPatternList.length === 0)
+    ) {
+      throw new Error('TagStatus.Tagged requires the specification of a tagPrefixList or a tagPatternList');
     }
-    if (rule.tagStatus !== TagStatus.TAGGED && rule.tagPrefixList !== undefined) {
-      throw new Error('tagPrefixList can only be specified when tagStatus is set to Tagged');
+    if (rule.tagStatus !== TagStatus.TAGGED && (rule.tagPrefixList !== undefined || rule.tagPatternList !== undefined)) {
+      throw new Error('tagPrefixList and tagPatternList can only be specified when tagStatus is set to Tagged');
+    }
+    if (rule.tagPrefixList !== undefined && rule.tagPatternList !== undefined) {
+      throw new Error('Both tagPrefixList and tagPatternList cannot be specified together in a rule');
+    }
+    if (rule.tagPatternList !== undefined) {
+      rule.tagPatternList.forEach((pattern) => {
+        const splitPatternLength = pattern.split('*').length;
+        if (splitPatternLength > 5) {
+          throw new Error(`A tag pattern cannot contain more than four wildcard characters (*), pattern: ${pattern}, counts: ${splitPatternLength - 1}`);
+        }
+      });
     }
     if ((rule.maxImageAge !== undefined) === (rule.maxImageCount !== undefined)) {
       throw new Error(`Life cycle rule must contain exactly one of 'maxImageAge' and 'maxImageCount', got: ${JSON.stringify(rule)}`);
@@ -935,6 +949,7 @@ function renderLifecycleRule(rule: LifecycleRule) {
     selection: {
       tagStatus: rule.tagStatus || TagStatus.ANY,
       tagPrefixList: rule.tagPrefixList,
+      tagPatternList: rule.tagPatternList,
       countType: rule.maxImageAge !== undefined ? CountType.SINCE_IMAGE_PUSHED : CountType.IMAGE_COUNT_MORE_THAN,
       countNumber: rule.maxImageAge?.toDays() ?? rule.maxImageCount,
       countUnit: rule.maxImageAge !== undefined ? 'days' : undefined,

packages/aws-cdk-lib/aws-ecr/test/repository.test.ts

@@ -49,7 +49,7 @@ describe('repository', () => {
     });
   });
 
-  test('tag-based lifecycle policy', () => {
+  test('tag-based lifecycle policy with tagPrefixList', () => {
     // GIVEN
     const stack = new cdk.Stack();
     const repo = new ecr.Repository(stack, 'Repo');
@@ -66,6 +66,95 @@ describe('repository', () => {
     });
   });
 
+  test('tag-based lifecycle policy with tagPatternList', () => {
+    // GIVEN
+    const stack = new cdk.Stack();
+    const repo = new ecr.Repository(stack, 'Repo');
+
+    // WHEN
+    repo.addLifecycleRule({ tagPatternList: ['abc*'], maxImageCount: 1 });
+
+    // THEN
+    Template.fromStack(stack).hasResourceProperties('AWS::ECR::Repository', {
+      LifecyclePolicy: {
+        // eslint-disable-next-line max-len
+        LifecyclePolicyText: '{"rules":[{"rulePriority":1,"selection":{"tagStatus":"tagged","tagPatternList":["abc*"],"countType":"imageCountMoreThan","countNumber":1},"action":{"type":"expire"}}]}',
+      },
+    });
+  });
+
+  test('both tagPrefixList and tagPatternList cannot be specified together in a rule', () => {
+    // GIVEN
+    const stack = new cdk.Stack();
+    const repo = new ecr.Repository(stack, 'Repo');
+
+    // THEN
+    expect(() => {
+      repo.addLifecycleRule({ tagPrefixList: ['abc'], tagPatternList: ['abc*'], maxImageCount: 1 });
+    }).toThrow(/Both tagPrefixList and tagPatternList cannot be specified together in a rule/);
+  });
+
+  test('tagPrefixList can only be specified when tagStatus is set to Tagged', () => {
+    // GIVEN
+    const stack = new cdk.Stack();
+    const repo = new ecr.Repository(stack, 'Repo');
+
+    // THEN
+    expect(() => {
+      repo.addLifecycleRule({ tagStatus: ecr.TagStatus.ANY, tagPrefixList: ['abc'], maxImageCount: 1 });
+    }).toThrow(/tagPrefixList and tagPatternList can only be specified when tagStatus is set to Tagged/);
+  });
+
+  test('tagPatternList can only be specified when tagStatus is set to Tagged', () => {
+    // GIVEN
+    const stack = new cdk.Stack();
+    const repo = new ecr.Repository(stack, 'Repo');
+
+    // THEN
+    expect(() => {
+      repo.addLifecycleRule({ tagStatus: ecr.TagStatus.ANY, tagPatternList: ['abc*'], maxImageCount: 1 });
+    }).toThrow(/tagPrefixList and tagPatternList can only be specified when tagStatus is set to Tagged/);
+  });
+
+  test('TagStatus.Tagged requires the specification of a tagPrefixList or a tagPatternList', () => {
+    // GIVEN
+    const stack = new cdk.Stack();
+    const repo = new ecr.Repository(stack, 'Repo');
+
+    // THEN
+    expect(() => {
+      repo.addLifecycleRule({ tagStatus: ecr.TagStatus.TAGGED, maxImageCount: 1 });
+    }).toThrow(/TagStatus.Tagged requires the specification of a tagPrefixList or a tagPatternList/);
+  });
+
+  test('A tag pattern can contain four wildcard characters', () => {
+    // GIVEN
+    const stack = new cdk.Stack();
+    const repo = new ecr.Repository(stack, 'Repo');
+
+    // WHEN
+    repo.addLifecycleRule({ tagPatternList: ['abc*d*e*f*'], maxImageCount: 1 });
+
+    // THEN
+    Template.fromStack(stack).hasResourceProperties('AWS::ECR::Repository', {
+      LifecyclePolicy: {
+        // eslint-disable-next-line max-len
+        LifecyclePolicyText: '{"rules":[{"rulePriority":1,"selection":{"tagStatus":"tagged","tagPatternList":["abc*d*e*f*"],"countType":"imageCountMoreThan","countNumber":1},"action":{"type":"expire"}}]}',
+      },
+    });
+  });
+
+  test('A tag pattern cannot contain more than four wildcard characters', () => {
+    // GIVEN
+    const stack = new cdk.Stack();
+    const repo = new ecr.Repository(stack, 'Repo');
+
+    // THEN
+    expect(() => {
+      repo.addLifecycleRule({ tagPatternList: ['abc*d*e*f*g*h'], maxImageCount: 1 });
+    }).toThrow(/A tag pattern cannot contain more than four wildcard characters \(\*\), pattern: abc\*d\*e\*f\*g\*h, counts: 5/);
+  });
+
   test('image tag mutability can be set', () => {
     // GIVEN
     const stack = new cdk.Stack();