feat(aws-codedeploy): Add the auto-scaling groups property to ServerD…

…eploymentGroup. (#739)

packages/@aws-cdk/aws-autoscaling/lib/auto-scaling-group.ts

@@ -249,8 +249,8 @@ export class AutoScalingGroup extends cdk.Construct implements elb.ILoadBalancer
      * Add command to the startup script of fleet instances.
      * The command must be in the scripting language supported by the fleet's OS (i.e. Linux/Windows).
      */
-    public addUserData(script: string) {
-        this.userDataLines.push(script);
+    public addUserData(...scriptLines: string[]) {
+        scriptLines.forEach(scriptLine => this.userDataLines.push(scriptLine));
     }
 
     public autoScalingGroupName() {

packages/@aws-cdk/aws-codedeploy/README.md

@@ -28,6 +28,10 @@ To create a new CodeDeploy Deployment Group that deploys to EC2/on-premise insta
 const deploymentGroup = new codedeploy.ServerDeploymentGroup(this, 'CodeDeployDeploymentGroup', {
     application,
     deploymentGroupName: 'MyDeploymentGroup',
+    autoScalingGroups: [asg1, asg2],
+    // adds User Data that installs the CodeDeploy agent on your auto-scaling groups hosts
+    // default: true
+    installAgent: true,
 });
 ```
 

packages/@aws-cdk/aws-codedeploy/lib/deployment-group.ts

@@ -1,3 +1,6 @@
+import autoscaling = require("@aws-cdk/aws-autoscaling");
+import ec2 = require("@aws-cdk/aws-ec2");
+import s3 = require("@aws-cdk/aws-s3");
 import cdk = require("@aws-cdk/cdk");
 import iam = require("../../aws-iam/lib/role");
 import { ServerApplication, ServerApplicationRef } from "./application";
@@ -56,9 +59,11 @@ export abstract class ServerDeploymentGroupRef extends cdk.Construct {
     }
 
     public abstract readonly application: ServerApplicationRef;
+    public abstract readonly role?: iam.Role;
     public abstract readonly deploymentGroupName: string;
     public abstract readonly deploymentGroupArn: string;
     public readonly deploymentConfig: IServerDeploymentConfig;
+    public abstract readonly autoScalingGroups?: autoscaling.AutoScalingGroup[];
 
     constructor(parent: cdk.Construct, id: string, deploymentConfig?: IServerDeploymentConfig) {
         super(parent, id);
@@ -71,14 +76,17 @@ export abstract class ServerDeploymentGroupRef extends cdk.Construct {
             deploymentGroupName: new cdk.Output(this, 'DeploymentGroupName', {
                 value: this.deploymentGroupName
             }).makeImportValue().toString(),
+            deploymentConfig: this.deploymentConfig,
         };
     }
 }
 
 class ImportedServerDeploymentGroupRef extends ServerDeploymentGroupRef {
     public readonly application: ServerApplicationRef;
+    public readonly role?: iam.Role = undefined;
     public readonly deploymentGroupName: string;
     public readonly deploymentGroupArn: string;
+    public readonly autoScalingGroups?: autoscaling.AutoScalingGroup[] = undefined;
 
     constructor(parent: cdk.Construct, id: string, props: ServerDeploymentGroupRefProps) {
         super(parent, id, props.deploymentConfig);
@@ -119,19 +127,39 @@ export interface ServerDeploymentGroupProps {
      * @default ServerDeploymentConfig#OneAtATime
      */
     deploymentConfig?: IServerDeploymentConfig;
+
+    /**
+     * The auto-scaling groups belonging to this Deployment Group.
+     *
+     * @default []
+     */
+    autoScalingGroups?: autoscaling.AutoScalingGroup[];
+
+    /**
+     * If you've provided any auto-scaling groups with the {@link #autoScalingGroups} property,
+     * you can set this property to add User Data that installs the CodeDeploy agent on the instances.
+     *
+     * @default true
+     * @see https://docs.aws.amazon.com/codedeploy/latest/userguide/codedeploy-agent-operations-install.html
+     */
+    installAgent?: boolean;
 }
 
 /**
  * A CodeDeploy Deployment Group that deploys to EC2/on-premise instances.
  */
 export class ServerDeploymentGroup extends ServerDeploymentGroupRef {
     public readonly application: ServerApplicationRef;
-    public readonly role: iam.Role;
+    public readonly role?: iam.Role;
     public readonly deploymentGroupArn: string;
     public readonly deploymentGroupName: string;
 
+    private readonly _autoScalingGroups: autoscaling.AutoScalingGroup[];
+    private readonly installAgent: boolean;
+    private readonly codeDeployBucket: s3.BucketRef;
+
     constructor(parent: cdk.Construct, id: string, props: ServerDeploymentGroupProps = {}) {
-        super(parent, id, props && props.deploymentConfig);
+        super(parent, id, props.deploymentConfig);
 
         this.application = props.application || new ServerApplication(this, 'Application');
 
@@ -140,18 +168,82 @@ export class ServerDeploymentGroup extends ServerDeploymentGroupRef {
             managedPolicyArns: ['arn:aws:iam::aws:policy/service-role/AWSCodeDeployRole'],
         });
 
+        this._autoScalingGroups = props.autoScalingGroups || [];
+        this.installAgent = props.installAgent === undefined ? true : props.installAgent;
+        const region = (new cdk.AwsRegion()).toString();
+        this.codeDeployBucket = s3.BucketRef.import(this, 'CodeDeployBucket', {
+            bucketName: `aws-codedeploy-${region}`,
+        });
+        for (const asg of this._autoScalingGroups) {
+            this.addCodeDeployAgentInstallUserData(asg);
+        }
+
         const resource = new cloudformation.DeploymentGroupResource(this, 'Resource', {
             applicationName: this.application.applicationName,
             deploymentGroupName: props.deploymentGroupName,
             serviceRoleArn: this.role.roleArn,
             deploymentConfigName: props.deploymentConfig &&
                 props.deploymentConfig.deploymentConfigName,
+            autoScalingGroups: new cdk.Token(() =>
+                this._autoScalingGroups.length === 0
+                    ? undefined
+                    : this._autoScalingGroups.map(asg => asg.autoScalingGroupName())),
         });
 
         this.deploymentGroupName = resource.deploymentGroupName;
         this.deploymentGroupArn = deploymentGroupName2Arn(this.application.applicationName,
             this.deploymentGroupName);
     }
+
+    public addAutoScalingGroup(asg: autoscaling.AutoScalingGroup): void {
+        this._autoScalingGroups.push(asg);
+        this.addCodeDeployAgentInstallUserData(asg);
+    }
+
+    public get autoScalingGroups(): autoscaling.AutoScalingGroup[] | undefined {
+        return this._autoScalingGroups.slice();
+    }
+
+    private addCodeDeployAgentInstallUserData(asg: autoscaling.AutoScalingGroup): void {
+        if (!this.installAgent) {
+            return;
+        }
+
+        this.codeDeployBucket.grantRead(asg.role, 'latest/*');
+
+        const region = (new cdk.AwsRegion()).toString();
+        switch (asg.osType) {
+            case ec2.OperatingSystemType.Linux:
+                asg.addUserData(
+                    'PKG_CMD=`which yum 2>/dev/null`',
+                    'if [ -z "$PKG_CMD" ]; then',
+                        'PKG_CMD=apt-get',
+                    'else',
+                        'PKG=CMD=yum',
+                    'fi',
+                    '$PKG_CMD update -y',
+                    '$PKG_CMD install -y ruby2.0',
+                    'if [ $? -ne 0 ]; then',
+                        '$PKG_CMD install -y ruby',
+                    'fi',
+                    '$PKG_CMD install -y awscli',
+                    'TMP_DIR=`mktemp -d`',
+                    'cd $TMP_DIR',
+                    `aws s3 cp s3://aws-codedeploy-${region}/latest/install . --region ${region}`,
+                    'chmod +x ./install',
+                    './install auto',
+                    'rm -fr $TMP_DIR',
+                );
+                break;
+            case ec2.OperatingSystemType.Windows:
+                asg.addUserData(
+                    'Set-Variable -Name TEMPDIR -Value (New-TemporaryFile).DirectoryName',
+                    `aws s3 cp s3://aws-codedeploy-${region}/latest/codedeploy-agent.msi $TEMPDIR\\codedeploy-agent.msi`,
+                    '$TEMPDIR\\codedeploy-agent.msi /quiet /l c:\\temp\\host-agent-install-log.txt',
+                );
+                break;
+        }
+    }
 }
 
 function deploymentGroupName2Arn(applicationName: string, deploymentGroupName: string): string {

packages/@aws-cdk/aws-codedeploy/package.json

@@ -53,12 +53,15 @@
   "license": "Apache-2.0",
   "devDependencies": {
     "@aws-cdk/assert": "^0.9.2",
+    "@aws-cdk/aws-ec2": "^0.9.2",
     "cdk-build-tools": "^0.9.2",
     "cfn2ts": "^0.9.2",
     "pkglint": "^0.9.2"
   },
   "dependencies": {
+    "@aws-cdk/aws-autoscaling": "^0.9.2",
     "@aws-cdk/aws-codepipeline-api": "^0.9.2",
+    "@aws-cdk/aws-s3": "^0.9.2",
     "@aws-cdk/cdk": "^0.9.2"
   },
   "homepage": "https://github.com/awslabs/aws-cdk"

packages/@aws-cdk/aws-codedeploy/test/test.deployment-group.ts

@@ -1,4 +1,6 @@
 import { expect, haveResource } from '@aws-cdk/assert';
+import autoscaling = require('@aws-cdk/aws-autoscaling');
+import ec2 = require('@aws-cdk/aws-ec2');
 import cdk = require('@aws-cdk/cdk');
 import { Test } from 'nodeunit';
 import codedeploy = require('../lib');
@@ -38,6 +40,53 @@ export = {
             test.notEqual(deploymentGroup, undefined);
 
             test.done();
-        }
+        },
+
+        "created with ASGs contains the ASG names"(test: Test) {
+            const stack = new cdk.Stack();
+
+            const asg = new autoscaling.AutoScalingGroup(stack, 'ASG', {
+                instanceType: new ec2.InstanceTypePair(ec2.InstanceClass.Standard3, ec2.InstanceSize.Small),
+                machineImage: new ec2.AmazonLinuxImage(),
+                vpc: new ec2.VpcNetwork(stack, 'VPC'),
+            });
+
+            new codedeploy.ServerDeploymentGroup(stack, 'DeploymentGroup', {
+                autoScalingGroups: [asg],
+            });
+
+            expect(stack).to(haveResource('AWS::CodeDeploy::DeploymentGroup', {
+                "AutoScalingGroups": [
+                  {
+                    "Ref": "ASG46ED3070",
+                  },
+                ]
+            }));
+
+            test.done();
+        },
+
+        "created without ASGs but adding them later contains the ASG names"(test: Test) {
+            const stack = new cdk.Stack();
+
+            const asg = new autoscaling.AutoScalingGroup(stack, 'ASG', {
+                instanceType: new ec2.InstanceTypePair(ec2.InstanceClass.Standard3, ec2.InstanceSize.Small),
+                machineImage: new ec2.AmazonLinuxImage(),
+                vpc: new ec2.VpcNetwork(stack, 'VPC'),
+            });
+
+            const deploymentGroup = new codedeploy.ServerDeploymentGroup(stack, 'DeploymentGroup');
+            deploymentGroup.addAutoScalingGroup(asg);
+
+            expect(stack).to(haveResource('AWS::CodeDeploy::DeploymentGroup', {
+                "AutoScalingGroups": [
+                  {
+                    "Ref": "ASG46ED3070",
+                  },
+                ]
+            }));
+
+            test.done();
+        },
     },
 };