Feature request: implement makeBatchHandler Middy middleware

[dreamorosi]

Use Case

Customers who use Middy middlewares might want to use the Batch Processing utility as a Middy middleware.

Solution/User Experience

Refer to example shown in the RFC #1082, section 3.2

Acceptance criteria

• The class covers all the features found in the reference implementation
• The middleware is exported
• Unit tests are implemented with 100% coverage.
• All functions are documented via docstrings, following project's conventions as much as possible

[dreamorosi]

With the current implementation of the Batch Processing utility, processing a batch of records sent to a Lambda handler requires one line (excluding formatting):

export const handler = async (
  event: SQSEvent,
  context: Context
): Promise<SQSBatchResponse> => {
  return await asyncProcessPartialResponse(event, recordHandler, processor, {
    context,
  });
};

At the moment we are unsure about the value added by a Middy middleware besides syntactic sugar for those users who like using middlewares as a pattern.

For this reason we are excluding this feature from the base version of the utility and will leave the issue open so that customers can express their interest. If there's enough demand we will implement the middleware before the utility reaches General Availability.

[dreamorosi]

Due to the lack of traction on this issue in the last 6+ months, I'm gonna go ahead and close it.

If you are interested in this feature, please open a new feature request describing your use case and we'll be happy to reconsider.

[github-actions]

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