feat(ecs): add tls property to a ServiceConnectService (#32605)

### Issue # (if applicable)

Closes #32583 

### Reason for this change

ServiceConnectService in ECS did not support the `tls` property.

### Description of changes

- Added `tls` property to ServiceConnectService(interface) in ECS(BaseService)
- modified implementation to allow specifying ServiceConnectService tls in the `enableServiceConnect` method

### Description of how you validated changes

Added unit  tests.

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

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

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

@@ -1938,3 +1938,40 @@ taskDefinition.addContainer('TheContainer', {
   }],
 });
 ```
+
+## Service Connect TLS
+
+Service Connect TLS is a feature that allows you to secure the communication between services using TLS.
+
+You can specify the `tls` option in the `services` array of the `serviceConnectConfiguration` property.
+
+The `tls` property is an object with the following properties:
+
+- `role`: The IAM role that's associated with the Service Connect TLS.
+- `awsPcaAuthorityArn`: The ARN of the certificate root authority that secures your service.
+- `kmsKey`: The KMS key used for encryption and decryption.
+
+```ts
+declare const cluster: ecs.Cluster;
+declare const taskDefinition: ecs.TaskDefinition;
+declare const kmsKey: kms.IKey;
+declare const role: iam.IRole;
+
+const service = new ecs.FargateService(this, 'FargateService', {
+  cluster,
+  taskDefinition,
+  serviceConnectConfiguration: {
+    services: [
+      {
+        tls: {
+          role,
+          kmsKey,
+          awsPcaAuthorityArn: 'arn:aws:acm-pca:us-east-1:123456789012:certificate-authority/123456789012',
+        },
+        portMappingName: 'api',
+      },
+    ],
+    namespace: 'sample namespace',
+  },
+});
+```

packages/aws-cdk-lib/aws-ecs/lib/base/base-service.ts

@@ -7,6 +7,7 @@ import * as ec2 from '../../../aws-ec2';
 import * as elb from '../../../aws-elasticloadbalancing';
 import * as elbv2 from '../../../aws-elasticloadbalancingv2';
 import * as iam from '../../../aws-iam';
+import * as kms from '../../../aws-kms';
 import * as cloudmap from '../../../aws-servicediscovery';
 import {
   Annotations,
@@ -254,6 +255,39 @@ export interface ServiceConnectService {
    * @default - Duration.seconds(15)
    */
   readonly perRequestTimeout?: Duration;
+
+  /**
+   * A reference to an object that represents a Transport Layer Security (TLS) configuration.
+   *
+   * @default - none
+   */
+  readonly tls?: ServiceConnectTlsConfiguration;
+}
+
+/**
+ * TLS configuration for Service Connect service
+ */
+export interface ServiceConnectTlsConfiguration {
+  /**
+   * The ARN of the certificate root authority that secures your service.
+   *
+   * @default - none
+   */
+  readonly awsPcaAuthorityArn?: string;
+
+  /**
+   * The KMS key used for encryption and decryption.
+   *
+   * @default - none
+   */
+  readonly kmsKey?: kms.IKey;
+
+  /**
+   * The IAM role that's associated with the Service Connect TLS.
+   *
+   * @default - none
+   */
+  readonly role?: iam.IRole;
 }
 
 /**
@@ -920,12 +954,21 @@ export abstract class BaseService extends Resource
         dnsName: svc.dnsName,
       };
 
+      const tls: CfnService.ServiceConnectTlsConfigurationProperty | undefined = svc.tls ? {
+        issuerCertificateAuthority: {
+          awsPcaAuthorityArn: svc.tls.awsPcaAuthorityArn,
+        },
+        kmsKey: svc.tls.kmsKey?.keyArn,
+        roleArn: svc.tls.role?.roleArn,
+      } : undefined;
+
       return {
         portName: svc.portMappingName,
         discoveryName: svc.discoveryName,
         ingressPortOverride: svc.ingressPortOverride,
         clientAliases: [alias],
         timeout: this.renderTimeout(svc.idleTimeout, svc.perRequestTimeout),
+        tls,
       } as CfnService.ServiceConnectServiceProperty;
     });
 
@@ -996,6 +1039,12 @@ export abstract class BaseService extends Resource
         !this.isValidPort(serviceConnectService.port)) {
         throw new Error(`Client Alias port ${serviceConnectService.port} is not valid.`);
       }
+
+      // tls.awsPcaAuthorityArn should be an ARN
+      const awsPcaAuthorityArn = serviceConnectService.tls?.awsPcaAuthorityArn;
+      if (awsPcaAuthorityArn && !Token.isUnresolved(awsPcaAuthorityArn) && !awsPcaAuthorityArn.startsWith('arn:')) {
+        throw new Error(`awsPcaAuthorityArn must start with "arn:" and have at least 6 components; received ${awsPcaAuthorityArn}`);
+      }
     });
   }
 

packages/aws-cdk-lib/aws-ecs/test/base-service.test.ts

@@ -1,6 +1,7 @@
 import { Template, Match } from '../../assertions';
 import * as ec2 from '../../aws-ec2';
 import * as iam from '../../aws-iam';
+import * as kms from '../../aws-kms';
 import * as cdk from '../../core';
 import { App, Stack } from '../../core';
 import * as cxapi from '../../cx-api';
@@ -79,6 +80,100 @@ describe('When import an ECS Service', () => {
       ],
     });
   });
+
+  test('should add tls configuration to service connect service', () => {
+    // GIVEN
+    const vpc = new ec2.Vpc(stack, 'Vpc');
+    const cluster = new ecs.Cluster(stack, 'EcsCluster', { vpc });
+    const taskDefinition = new ecs.FargateTaskDefinition(stack, 'TaskDef');
+    const kmsKey = new kms.Key(stack, 'KmsKey');
+    const role = new iam.Role(stack, 'Role', {
+      assumedBy: new iam.ServicePrincipal('ecs.amazonaws.com'),
+    });
+    taskDefinition.addContainer('Web', {
+      image: ecs.ContainerImage.fromRegistry('amazon/amazon-ecs-sample'),
+      portMappings: [
+        {
+          name: 'api',
+          containerPort: 80,
+        },
+      ],
+    });
+    const service = new ecs.FargateService(stack, 'Service', {
+      cluster,
+      taskDefinition,
+    });
+
+    // WHEN
+    service.enableServiceConnect({
+      services: [
+        {
+          tls: {
+            awsPcaAuthorityArn:
+              'arn:aws:acm-pca:us-east-1:123456789012:certificate-authority/123456789012',
+            kmsKey,
+            role,
+          },
+          portMappingName: 'api',
+        },
+      ],
+      namespace: 'test namespace',
+    });
+
+    // THEN
+    Template.fromStack(stack).hasResourceProperties('AWS::ECS::Service', {
+      ServiceConnectConfiguration: {
+        Services: [
+          {
+            Tls: {
+              IssuerCertificateAuthority: {
+                AwsPcaAuthorityArn:
+                  'arn:aws:acm-pca:us-east-1:123456789012:certificate-authority/123456789012',
+              },
+              KmsKey: stack.resolve(kmsKey.keyArn),
+              RoleArn: stack.resolve(role.roleArn),
+            },
+          },
+        ],
+      },
+    });
+  });
+
+  test('throws an error when awsPcaAuthorityArn is not an ARN', () => {
+    // GIVEN
+    const vpc = new ec2.Vpc(stack, 'Vpc');
+    const cluster = new ecs.Cluster(stack, 'EcsCluster', { vpc });
+    const taskDefinition = new ecs.FargateTaskDefinition(stack, 'TaskDef');
+    taskDefinition.addContainer('Web', {
+      image: ecs.ContainerImage.fromRegistry('amazon/amazon-ecs-sample'),
+      portMappings: [
+        {
+          name: 'api',
+          containerPort: 80,
+        },
+      ],
+    });
+
+    // WHEN
+    const createFargateService = () => new ecs.FargateService(stack, 'Service', {
+      cluster,
+      taskDefinition,
+      serviceConnectConfiguration: {
+        services: [
+          {
+            tls: {
+              awsPcaAuthorityArn: 'invalid-arn',
+            },
+            portMappingName: 'api',
+          },
+        ],
+        namespace: 'test namespace',
+      },
+    });
+
+    // THEN
+    expect(() => createFargateService()).toThrow(/awsPcaAuthorityArn must start with "arn:" and have at least 6 components; received invalid-arn/);
+  });
 });
 
 describe('For alarm-based rollbacks', () => {