fix(codepipeline-actions): use IBaseService instead of BaseService in EcsDeployActionProps

packages/@aws-cdk/aws-codepipeline-actions/lib/ecs/deploy-action.ts

@@ -39,7 +39,7 @@ export interface EcsDeployActionProps extends codepipeline.CommonAwsActionProps
   /**
    * The ECS Service to deploy.
    */
-  readonly service: ecs.BaseService;
+  readonly service: ecs.IBaseService;
 }
 
 /**

packages/@aws-cdk/aws-codepipeline-actions/test/ecs/test.ecs-deploy-action.ts

@@ -1,6 +1,8 @@
+import { expect, haveResourceLike } from '@aws-cdk/assert';
 import * as codepipeline from '@aws-cdk/aws-codepipeline';
 import * as ec2 from '@aws-cdk/aws-ec2';
 import * as ecs from '@aws-cdk/aws-ecs';
+import * as s3 from '@aws-cdk/aws-s3';
 import * as cdk from '@aws-cdk/core';
 import { Test } from 'nodeunit';
 import * as cpactions from '../../lib';
@@ -80,6 +82,71 @@ export = {
 
       test.done();
     },
+
+    'can be created by existing service'(test: Test) {
+      const stack = new cdk.Stack();
+      const vpc = new ec2.Vpc(stack, 'Vpc');
+      const service = ecs.FargateService.fromFargateServiceAttributes(stack, 'FargateService', {
+        serviceName: 'service-name',
+        cluster: ecs.Cluster.fromClusterAttributes(stack, 'Cluster', {
+          vpc,
+          securityGroups: [],
+          clusterName: 'cluster-name',
+        }),
+      });
+      const artifact = new codepipeline.Artifact('Artifact');
+      const bucket = new s3.Bucket(stack, 'PipelineBucket', {
+        versioned: true,
+        removalPolicy: cdk.RemovalPolicy.DESTROY,
+      });
+      const source = new cpactions.S3SourceAction({
+        actionName: 'Source',
+        output: artifact,
+        bucket,
+        bucketKey: 'key',
+      });
+      const action = new cpactions.EcsDeployAction({
+        actionName: 'ECS',
+        service,
+        imageFile: artifact.atPath('imageFile.json'),
+      });
+      new codepipeline.Pipeline(stack, 'Pipeline', {
+        stages: [
+          {
+            stageName: 'Source',
+            actions: [source],
+          },
+          {
+            stageName: 'Deploy',
+            actions: [action],
+          }
+        ],
+      });
+
+      expect(stack).to(haveResourceLike('AWS::CodePipeline::Pipeline', {
+        Stages: [
+          {},
+          {
+            Actions: [
+              {
+                Name: 'ECS',
+                ActionTypeId: {
+                  Category: "Deploy",
+                  Provider: "ECS"
+                },
+                Configuration: {
+                  ClusterName: "cluster-name",
+                  ServiceName: "service-name",
+                  FileName: "imageFile.json"
+                }
+              }
+            ]
+          }
+        ]
+      }));
+
+      test.done();
+    },
   },
 };
 

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

@@ -22,6 +22,13 @@ export interface IService extends IResource {
    * @attribute
    */
   readonly serviceArn: string;
+
+  /**
+   * The name of the service.
+   *
+   * @attribute
+   */
+  readonly serviceName: string;
 }
 
 /**
@@ -245,11 +252,21 @@ class NetworkListenerConfig extends ListenerConfig {
   }
 }
 
+/**
+ * The interface for BaseService.
+ */
+export interface IBaseService extends IService {
+  /**
+   * The cluster that hosts the service.
+   */
+  readonly cluster: ICluster;
+}
+
 /**
  * The base class for Ec2Service and FargateService services.
  */
 export abstract class BaseService extends Resource
-  implements IService, elbv2.IApplicationLoadBalancerTarget, elbv2.INetworkLoadBalancerTarget, elb.ILoadBalancerTarget {
+  implements IBaseService, elbv2.IApplicationLoadBalancerTarget, elbv2.INetworkLoadBalancerTarget, elb.ILoadBalancerTarget {
 
   /**
    * The security groups which manage the allowed network traffic for the service.

packages/@aws-cdk/aws-ecs/lib/base/from-service-attributes.ts

@@ -0,0 +1,57 @@
+import { Construct, Resource, Stack } from '@aws-cdk/core';
+import { IBaseService } from '../base/base-service';
+import { ICluster } from '../cluster';
+
+/**
+ * The properties to import from the service.
+ */
+export interface ServiceAttributes {
+  /**
+   * The cluster that hosts the service.
+   */
+  readonly cluster: ICluster;
+
+  /**
+   * The service ARN.
+   *
+   * @default - either this, or {@link serviceName}, is required
+   */
+  readonly serviceArn?: string;
+
+  /**
+   * The name of the service.
+   *
+   * @default - either this, or {@link serviceArn}, is required
+   */
+  readonly serviceName?: string;
+}
+
+export function fromServiceAtrributes(scope: Construct, id: string, attrs: ServiceAttributes): IBaseService {
+  if ((attrs.serviceArn && attrs.serviceName) || (!attrs.serviceArn && !attrs.serviceName)) {
+    throw new Error('You can only specify either serviceArn or serviceName.');
+  }
+
+  const stack = Stack.of(scope);
+  let name: string;
+  let arn: string;
+  if (attrs.serviceName) {
+    name = attrs.serviceName as string;
+    arn = stack.formatArn({
+      partition: stack.partition,
+      service: 'ecs',
+      region: stack.region,
+      account: stack.account,
+      resource: 'service',
+      resourceName: name,
+    });
+  } else {
+    arn = attrs.serviceArn as string;
+    name = stack.parseArn(arn).resourceName as string;
+  }
+  class Import extends Resource implements IBaseService {
+    public readonly serviceArn = arn;
+    public readonly serviceName = name;
+    public readonly cluster = attrs.cluster;
+  }
+  return new Import(scope, id);
+}

packages/@aws-cdk/aws-ecs/lib/ec2/ec2-service.ts

@@ -1,7 +1,9 @@
 import * as ec2 from '@aws-cdk/aws-ec2';
 import { Construct, Lazy, Resource, Stack } from '@aws-cdk/core';
-import { BaseService, BaseServiceOptions, IService, LaunchType, PropagatedTagSource } from '../base/base-service';
+import { BaseService, BaseServiceOptions, IBaseService, IService, LaunchType, PropagatedTagSource } from '../base/base-service';
+import { fromServiceAtrributes } from '../base/from-service-attributes';
 import { NetworkMode, TaskDefinition } from '../base/task-definition';
+import { ICluster } from '../cluster';
 import { CfnService } from '../ecs.generated';
 import { PlacementConstraint, PlacementStrategy } from '../placement';
 
@@ -87,6 +89,30 @@ export interface IEc2Service extends IService {
 
 }
 
+/**
+ * The properties to import from the service using the EC2 launch type.
+ */
+export interface Ec2ServiceAttributes {
+  /**
+   * The cluster that hosts the service.
+   */
+  readonly cluster: ICluster;
+
+  /**
+   * The service ARN.
+   *
+   * @default - either this, or {@link serviceName}, is required
+   */
+  readonly serviceArn?: string;
+
+  /**
+   * The name of the service.
+   *
+   * @default - either this, or {@link serviceArn}, is required
+   */
+  readonly serviceName?: string;
+}
+
 /**
  * This creates a service using the EC2 launch type on an ECS cluster.
  *
@@ -100,10 +126,18 @@ export class Ec2Service extends BaseService implements IEc2Service {
   public static fromEc2ServiceArn(scope: Construct, id: string, ec2ServiceArn: string): IEc2Service {
     class Import extends Resource implements IEc2Service {
       public readonly serviceArn = ec2ServiceArn;
+      public readonly serviceName = Stack.of(scope).parseArn(ec2ServiceArn).resourceName as string;
     }
     return new Import(scope, id);
   }
 
+  /**
+   * Imports from the specified service attrributes.
+   */
+  public static fromEc2ServiceAttributes(scope: Construct, id: string, attrs: Ec2ServiceAttributes): IBaseService {
+    return fromServiceAtrributes(scope, id, attrs);
+  }
+
   private readonly constraints: CfnService.PlacementConstraintProperty[];
   private readonly strategies: CfnService.PlacementStrategyProperty[];
   private readonly daemon: boolean;

packages/@aws-cdk/aws-ecs/lib/fargate/fargate-service.ts

@@ -1,7 +1,9 @@
 import * as ec2 from '@aws-cdk/aws-ec2';
 import * as cdk from '@aws-cdk/core';
-import { BaseService, BaseServiceOptions, IService, LaunchType, PropagatedTagSource } from '../base/base-service';
+import { BaseService, BaseServiceOptions, IBaseService, IService, LaunchType, PropagatedTagSource } from '../base/base-service';
+import { fromServiceAtrributes } from '../base/from-service-attributes';
 import { TaskDefinition } from '../base/task-definition';
+import { ICluster } from '../cluster';
 
 /**
  * The properties for defining a service using the Fargate launch type.
@@ -65,6 +67,30 @@ export interface IFargateService extends IService {
 
 }
 
+/**
+ * The properties to import from the service using the Fargate launch type.
+ */
+export interface FargateServiceAttributes {
+  /**
+   * The cluster that hosts the service.
+   */
+  readonly cluster: ICluster;
+
+  /**
+   * The service ARN.
+   *
+   * @default - either this, or {@link serviceName}, is required
+   */
+  readonly serviceArn?: string;
+
+  /**
+   * The name of the service.
+   *
+   * @default - either this, or {@link serviceArn}, is required
+   */
+  readonly serviceName?: string;
+}
+
 /**
  * This creates a service using the Fargate launch type on an ECS cluster.
  *
@@ -73,15 +99,23 @@ export interface IFargateService extends IService {
 export class FargateService extends BaseService implements IFargateService {
 
   /**
-   * Import a task definition from the specified task definition ARN.
+   * Imports from the specified service ARN.
    */
   public static fromFargateServiceArn(scope: cdk.Construct, id: string, fargateServiceArn: string): IFargateService {
     class Import extends cdk.Resource implements IFargateService {
       public readonly serviceArn = fargateServiceArn;
+      public readonly serviceName = cdk.Stack.of(scope).parseArn(fargateServiceArn).resourceName as string;
     }
     return new Import(scope, id);
   }
 
+  /**
+   * Imports from the specified service attrributes.
+   */
+  public static fromFargateServiceAttributes(scope: cdk.Construct, id: string, attrs: FargateServiceAttributes): IBaseService {
+    return fromServiceAtrributes(scope, id, attrs);
+  }
+
   /**
    * Constructs a new instance of the FargateService class.
    */

packages/@aws-cdk/aws-ecs/test/ec2/test.ec2-service.ts

@@ -1936,5 +1936,74 @@ export = {
     });
 
     test.done();
-  }
+  },
+
+  'When import an EC2 Service': {
+    'with serviceArn'(test: Test) {
+      // GIVEN
+      const stack = new cdk.Stack();
+      const cluster = new ecs.Cluster(stack, 'EcsCluster');
+
+      // WHEN
+      const service = ecs.Ec2Service.fromEc2ServiceAttributes(stack, 'EcsService', {
+        serviceArn: 'arn:aws:ecs:us-west-2:123456789012:service/my-http-service',
+        cluster,
+      });
+
+      // THEN
+      test.equal(service.serviceArn, 'arn:aws:ecs:us-west-2:123456789012:service/my-http-service');
+      test.equal(service.serviceName, 'my-http-service');
+
+      test.done();
+    },
+
+    'with serviceName'(test: Test) {
+      // GIVEN
+      const stack = new cdk.Stack();
+      const pseudo = new cdk.ScopedAws(stack);
+      const cluster = new ecs.Cluster(stack, 'EcsCluster');
+
+      // WHEN
+      const service = ecs.Ec2Service.fromEc2ServiceAttributes(stack, 'EcsService', {
+        serviceName: 'my-http-service',
+        cluster,
+      });
+
+      // THEN
+      test.deepEqual(stack.resolve(service.serviceArn), stack.resolve(`arn:${pseudo.partition}:ecs:${pseudo.region}:${pseudo.accountId}:service/my-http-service`));
+      test.equal(service.serviceName, 'my-http-service');
+
+      test.done();
+    },
+
+    'throws an exception if both serviceArn and serviceName were provided for fromEc2ServiceAttributes'(test: Test) {
+      // GIVEN
+      const stack = new cdk.Stack();
+      const cluster = new ecs.Cluster(stack, 'EcsCluster');
+
+      test.throws(() => {
+        ecs.Ec2Service.fromEc2ServiceAttributes(stack, 'EcsService', {
+          serviceArn: 'arn:aws:ecs:us-west-2:123456789012:service/my-http-service',
+          serviceName: 'my-http-service',
+          cluster,
+        });
+      }, /only specify either serviceArn or serviceName/);
+
+      test.done();
+    },
+
+    'throws an exception if neither serviceArn nor serviceName were provided for fromEc2ServiceAttributes'(test: Test) {
+      // GIVEN
+      const stack = new cdk.Stack();
+      const cluster = new ecs.Cluster(stack, 'EcsCluster');
+
+      test.throws(() => {
+        ecs.Ec2Service.fromEc2ServiceAttributes(stack, 'EcsService', {
+          cluster,
+        });
+      }, /only specify either serviceArn or serviceName/);
+
+      test.done();
+    },
+  },
 };