aws-stepfunctions: DistrbituedMap itemReader get bucket and key at runtime from state input

[tonerm43]

Describe the feature

When creating a DistributedMap in the console, I can get the bucket and key from state input at runtime.

Currently in the CDK implementation, I can only use a static bucket and key.

Use Case

My step function sends bucket and key as input to a distributed map

Proposed Solution

No response

Other Information

You can use CustomState as a workaround:

ItemReader: {
  Parameters: {
    'Bucket.$': '$.bucket',
    'Key.$': '$.key'
  }
}

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

CDK version used

1.128.0

Environment details (OS name and version, etc.)

4.14, Amazon Linux 2, x86_64

[pahud]

Thank you and we will be happy to review the PR to move this forward.

[nguyentoanit]

Any updates on this issue?

[ot-brad-steiner]

I also need this functionality

[tonerm43]

This appears to be solved by #31619

[github-actions]

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