constructor()

in typescript/resource-overrides/index.ts [8:106]

• 60 lines of code
• 1 McCabe index (conditional complexity)

    constructor(scope: cdk.App, id: string) {
        super(scope, id);

        const otherBucket = new s3.Bucket(this, 'Other');

        const bucket = new s3.Bucket(this, 'MyBucket', {
            versioned: true,
            encryption: s3.BucketEncryption.KMS_MANAGED
        });

        const bucketResource2 = bucket.node.defaultChild as s3.CfnBucket;
        bucketResource2.addPropertyOverride('BucketEncryption.ServerSideEncryptionConfiguration.0.EncryptEverythingAndAlways', true);
        bucketResource2.addPropertyDeletionOverride('BucketEncryption.ServerSideEncryptionConfiguration.0.ServerSideEncryptionByDefault');

        //
        // Accessing the L1 bucket resource from an L2 bucket
        //

        const bucketResource = bucket.node.defaultChild as s3.CfnBucket;
        const anotherWay = bucket.node.children.find(c => (c as cdk.CfnResource).cfnResourceType === 'AWS::S3::Bucket') as s3.CfnBucket;
        assert.equal(bucketResource, anotherWay);

        //
        // This is how to specify resource options such as dependencies, metadata, update policy
        //

        bucketResource.node.addDependency(otherBucket.node.defaultChild as cdk.CfnResource);
        bucketResource.cfnOptions.metadata = { MetadataKey: 'MetadataValue' };
        bucketResource.cfnOptions.updatePolicy = {
            autoScalingRollingUpdate: {
                pauseTime: '390'
            }
        };

        //
        // This is how to specify "raw" overrides at the __resource__ level
        //

        bucketResource.addOverride('Type', 'AWS::S3::Bucketeer'); // even "Type" can be overridden
        bucketResource.addOverride('Transform', 'Boom');
        bucketResource.addOverride('Properties.CorsConfiguration', {
            Custom: 123,
            Bar: [ 'A', 'B' ]
        });

        // addPropertyOverride simply allows you to omit the "Properties." prefix
        bucketResource.addPropertyOverride('VersioningConfiguration.Status', 'NewStatus');
        // bucketResource.addPropertyOverride('Foo', null); // FIXME causes filterUndefined to error
        bucketResource.addPropertyOverride('Token', otherBucket.bucketArn); // use tokens
        bucketResource.addPropertyOverride('LoggingConfiguration.DestinationBucketName', otherBucket.bucketName);

        // Assign completely new property value
        bucketResource.analyticsConfigurations = [
            {
                id: 'config1',
                storageClassAnalysis: {
                    dataExport: {
                        outputSchemaVersion: '1',
                        destination: {
                            format: 'html',
                            bucketArn: otherBucket.bucketArn // use tokens freely
                        }
                    }
                }
            }
        ];

        // Or selectively override parts of it
        bucketResource.addPropertyOverride('CorsConfiguration.CorsRules', [
            {
                AllowedMethods: [ 'GET' ],
                AllowedOrigins: [ '*' ]
            }
        ]);

        //
        // It is also possible to request a deletion of a value by either assigning
        // `undefined` (in supported languages) or use the `addDeletionOverride` method
        //

        bucketResource.addDeletionOverride('Metadata');
        bucketResource.addPropertyDeletionOverride('CorsConfiguration.Bar');

        const vpc = new ec2.Vpc(this, 'VPC', { maxAzs: 1 });
        const asg = new autoscaling.AutoScalingGroup(this, 'ASG', {
            instanceType: ec2.InstanceType.of(ec2.InstanceClass.M4, ec2.InstanceSize.XLARGE),
            machineImage: new ec2.AmazonLinuxImage(),
            vpc
        });

        //
        // The default child resource is called `Resource`, but secondary resources, such as
        // an Auto Scaling Group's launch configuration might have a different ID. You will likely
        // need to consule the codebase or use the `.map.find` method above
        //

        const lc = asg.node.findChild('LaunchConfig') as autoscaling.CfnLaunchConfiguration;
        lc.addPropertyOverride('Foo.Bar', 'Hello');
    }