Custom Resource GetAtt not working

[YamiDaisuke]

Guidance Question

Custom Resource GetAtt not working

The Question

Hi!, I'm trying to use a CustomResource to create a MediaTailor channel, so far the scripts go well and the channel gets created but I have two issues:

First problem:

From my lambda function I'm returning the following object:

{
    "Status": "SUCCESS",
    "PhysicalResourceId": "mediaTailorPlaybackConfigName",
    "StackId": "arn:aws:cloudformation:us-east-1:.....",
    "RequestId": "......",
    "LogicalResourceId": "mediaTailorresource7FE79038",
    "Data": {
        "Arn": "arn:aws:mediatailor:us-east-1:XXXXX:playbackConfiguration/mediaTailorPlaybackConfigName",
        "HLS": "https://xxxxxxxxxxxxxxxxxxx.mediatailor.us-east-1.amazonaws.com/v1/master/xxxxxxxxxxx",
        "DASH": "https://xxxxxxxxxxxxxxxxx.mediatailor.us-east-1.amazonaws.com/v1/dash/xxxxxxxxxxxxx"
    }
}

When I try to use resource.getAtt('HLS').toString() I get the following error:

CustomResource attribute error: Vendor response doesn't contain HLS key in object arn:aws:cloudformation:us-east-1:829011433133:stack/xxxxxxxx|mediaTailorResourcexxxxxxxxxxxxxxx in S3 bucket cloudformation-custom-resource-storage-useast1

The second case happens during rollback, even though I'm returning a "PhysicalResourceId" the "DELETE" action receives the same "RequestId" as "PhysicalResourceId" so I don't have a way to find the actual resource and delete it

CDK CLI Version

1.102.0

Example

// For Lambda handler I'm currently using this sample script: 
var response = require('cfn-response');
exports.handler = function (event, context) {
    console.log('REQUEST RECEIVED:\n' + JSON.stringify(event));

    if (event.RequestType === 'Create') {
        console.log('CREATE!');
        response.send(event, context, response.SUCCESS, { 'Message': 'Resource creation successful!', 'HLS': 'hellofromtheotherside.com' });
    } else if (event.RequestType === 'Update') {
        console.log('UDPATE!');
        response.send(event, context, response.SUCCESS, { 'Message': 'Resource update successful!', 'HLS': 'hellofromtheotherside.com' });
    } else if (event.RequestType === 'Delete') {
        console.log('DELETE!');
        response.send(event, context, response.SUCCESS, { 'Message': 'Resource deletion successful!', 'HLS': 'hellofromtheotherside.com' });
    } else {
        console.log('FAILED!');
        response.send(event, context, response.FAILED);
    }
};



// CDK Construct 
class MediaTailorConfig extends cdk.Construct {

    constructor(scope, id, props) {
        super(scope, id, props);

        const onEvent = new lambda.SingletonFunction(this, 'resource', {
            uuid: 'xxxxxxxxxxx',
            code: lambda.Code.fromAsset(path.join(__dirname, 'cfn-mediatailor/index.js.zip'), { encoding: 'utf-8' }),
            handler: 'index.handler',
            timeout: cdk.Duration.seconds(300),
            runtime: lambda.Runtime.NODEJS_14_X,
        });

        const myProvider = new cr.Provider(this, 'MediaTailorProvider', {
            onEventHandler: onEvent,
            logRetention: logs.RetentionDays.TWO_WEEKS, 
        });

        const resource = new cdk.CustomResource(this, 'resource', { serviceToken: myProvider.serviceToken, properties: props });

        this.hls = resource.getAtt('HLS').toString();
    }

}

Example Version

No response

OS

macOS

Language

Typescript

Other information

No response

[bkchy]

We are also having this issue but we are using 2.8.0:

"aws-cdk": "^2.8.0",
"aws-cdk-lib": "^2.8.0",

Is there any update on this or has anyone found a workaround?