(aws-events): use grantPutEventsTo on another eventBus

[khawarizmus]

General Issue

I can find a way to grant put permissions to an eventBus from another eventBus

The Question

I have the following code:

const sourceBus = EventBus.fromEventBusArn(
                this,
                'CSSEventBus',
                props.sourceEventBusARN
            );
            if (props.crossAccountEventBridge.initializeNewBus) {
                bus = new EventBus(this, 'CrossAccountEventBus', {
                    eventBusName: props.crossAccountEventBridge.eventBusName,
                });
            } else {
                bus = EventBus.fromEventBusName(
                    this,
                    'UpdateTenantEventBus',
                    props.crossAccountEventBridge.eventBusName
                );
            }
            bus.grantPutEventsTo(sourceBus); // Error: Argument of type 'IEventBus' is not assignable to parameter of type 'IGrantable'. Property 'grantPrincipal' is missing in type 'IEventBus' but required in type 'IGrantable'.

and as highlighted I get the error Argument of type 'IEventBus' is not assignable to parameter of type 'IGrantable'. Property 'grantPrincipal' is missing in type 'IEventBus' but required in type 'IGrantable'.. but I can't find any workaround for this. not sure how I can implement that in a different way.

I have tried to do bus.grantPutEventsTo(new PrincipaleFronArn(sourceBus.eventBusArn)); but it didn't create any permessions.

CDK CLI Version

2.12.0

Framework Version

2.12.0

Node.js Version

14.19.0

OS

Mac

Language

Typescript

Language Version

4.5.5

Other information

No response

[peterwoodworth]

Our IEventBus interface doesn't extend the IGrantable interface, so you cannot use this method on another Event Bus.

If you wish to have these permissions, you will need to configure the permissions a bit more manually. This is a pretty good guide for a similar scenario which should help you out 🙂

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