From fdc2cf9f39c5da9bc28032deade25842876449b4 Mon Sep 17 00:00:00 2001
From: rafaelrcamargo <rafaelrakochinski@gmail.com>
Date: Wed, 29 Nov 2023 23:15:38 -0300
Subject: [PATCH] feat: deprecated keyArn and added aliasArn as the new name
 for the ARN into the alias L2 construct

---
 packages/aws-cdk-lib/aws-kms/lib/alias.ts       | 15 +++++++++++++++
 packages/aws-cdk-lib/aws-kms/test/alias.test.ts | 10 ++++++++++
 2 files changed, 25 insertions(+)

diff --git a/packages/aws-cdk-lib/aws-kms/lib/alias.ts b/packages/aws-cdk-lib/aws-kms/lib/alias.ts
index cc77cc50ed420..c1957957a9825 100644
--- a/packages/aws-cdk-lib/aws-kms/lib/alias.ts
+++ b/packages/aws-cdk-lib/aws-kms/lib/alias.ts
@@ -59,6 +59,12 @@ abstract class AliasBase extends Resource implements IAlias {
 
   public abstract readonly aliasTargetKey: IKey;
 
+  /**
+   * The ARN of the alias.
+   *
+   * @attribute
+   * @deprecated use `aliasArn` instead
+   */
   public get keyArn(): string {
     return Stack.of(this).formatArn({
       service: 'kms',
@@ -67,6 +73,15 @@ abstract class AliasBase extends Resource implements IAlias {
     });
   }
 
+  /**
+   * The ARN of the alias.
+   *
+   * @attribute
+   */
+  public get aliasArn(): string {
+    return this.keyArn;
+  }
+
   public get keyId(): string {
     return this.aliasName;
   }
diff --git a/packages/aws-cdk-lib/aws-kms/test/alias.test.ts b/packages/aws-cdk-lib/aws-kms/test/alias.test.ts
index e629b46ec1744..f631c97490f29 100644
--- a/packages/aws-cdk-lib/aws-kms/test/alias.test.ts
+++ b/packages/aws-cdk-lib/aws-kms/test/alias.test.ts
@@ -357,6 +357,16 @@ test('does not add alias if starts with token', () => {
   });
 });
 
+test('aliasArn and keyArn from alias should match', () => {
+  const app = new App();
+  const stack = new Stack(app, 'Test');
+  const key = new Key(stack, 'Key');
+
+  const alias = new Alias(stack, 'Alias', { targetKey: key, aliasName: 'alias/foo' });
+
+  expect(alias.aliasArn).toEqual(alias.keyArn);
+});
+
 class AliasOutputsConstruct extends Construct {
   constructor(scope: Construct, id: string, key: IKey) {
     super(scope, id);