[lambda-event-sources] Cross stack reference with dynamodb stream

When I create a dynamodb table in one stack and share that reference to a second stack (same cdk app) and add in the second stack a DynamoEventSource it gives me an error

Stack "s2a-wd-datapoint-importer" cannot consume a cross reference from stack "s2a-wd-plotting". Cross stack references are only supported for stacks deployed to the same environment or between nested stacks and their parent stack

/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/private/refs.ts:55
    throw new Error(
          ^
Error: Stack "s2a-wd-datapoint-importer" cannot consume a cross reference from stack "s2a-wd-plotting". Cross stack references are only supported for stacks deployed to the same environment or between nested stacks and their parent stack
    at resolveValue (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/private/refs.ts:55:11)
    at Object.resolveReferences (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/private/refs.ts:31:24)
    at Object.prepareApp (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/private/prepare-app.ts:36:5)
    at Object.synthesize (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/private/synthesis.ts:21:3)
    at App.synth (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/stage.ts:175:23)
    at process.<anonymous> (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/app.ts:112:45)
    at Object.onceWrapper (events.js:422:26)
    at process.emit (events.js:315:20)
    at process.EventEmitter.emit (domain.js:483:12)
    at process.emit (/home/emil/code/watchdog-plotting/node_modules/source-map-support/source-map-support.js:495:21)

Reproduction Steps

Stack1:

        this.table= new dynamodb.Table(scope, 'table', {
            partitionKey: {
                name: 'id',
                type: AttributeType.STRING,
            },
            billingMode: BillingMode.PAY_PER_REQUEST,
            tableName: `tabletest`,
            stream: dynamodb.StreamViewType.NEW_IMAGE,
        });

Stack2:

        lambda.addEventSource(
            new DynamoEventSource(table, {
                startingPosition: StartingPosition.LATEST,
                batchSize: 5,
                maxBatchingWindow: Duration.seconds(10),
                retryAttempts: 1,
            })
        );

What did you expect to happen?

Sharing dynamodb table with streams should work within one cdk app

What actually happened?

I see the following error. When I remove the EventSource from the lambda everything works fine.

Stack "s2a-wd-datapoint-importer" cannot consume a cross reference from stack "s2a-wd-plotting". Cross stack references are only supported for stacks deployed to the same environment or between nested stacks and their parent stack

/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/private/refs.ts:55
    throw new Error(
          ^
Error: Stack "s2a-wd-datapoint-importer" cannot consume a cross reference from stack "s2a-wd-plotting". Cross stack references are only supported for stacks deployed to the same environment or between nested stacks and their parent stack
    at resolveValue (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/private/refs.ts:55:11)
    at Object.resolveReferences (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/private/refs.ts:31:24)
    at Object.prepareApp (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/private/prepare-app.ts:36:5)
    at Object.synthesize (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/private/synthesis.ts:21:3)
    at App.synth (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/stage.ts:175:23)
    at process.<anonymous> (/home/emil/code/watchdog-plotting/node_modules/@aws-cdk/core/lib/app.ts:112:45)
    at Object.onceWrapper (events.js:422:26)
    at process.emit (events.js:315:20)
    at process.EventEmitter.emit (domain.js:483:12)
    at process.emit (/home/emil/code/watchdog-plotting/node_modules/source-map-support/source-map-support.js:495:21)

Environment

• CLI Version : 1.62.0 (build 8c2d7fc)
• Framework Version: 1.62.0
• Node.js Version: v12.18.3
• OS : Ubuntu Server 20.4
• Language (Version): TypeScript (3.9.7)

---

This is 🐛 Bug Report

[obiwabrakenobi]

well not literally the same. As you mentioned the error message was correct but I did not see the problem in the first place.

My setup is like this. I added the env since I could not create a hosted zone

Cannot retrieve value from context provider hosted-zone since account/region are not specified at the stack level. Either configure "env" with explicit account and region when you define your stack, or use the environment variables "CDK_DEFAULT_ACCOUNT" and "CDK_DEFAULT_REGION" to inherit environment information from the CLI (not recommended for production stacks)

const stack1 = new Stack(app, 'stack1', {
    env: {
        account: process.env.CDK_DEFAULT_ACCOUNT,
        region: process.env.CDK_DEFAULT_REGION,
    },
});

const stack2 = new Stack(
    app,
    'stack2'
);

But then the environment seems not to be the same for both stacks which makes sense to me. So I added the env to stack2 and then it works.

Thanks for your help! I think it is solved with that

[obiwabrakenobi]

let me check that. If have literally the same setup