aws_dynamodb_stream_lambda raises exception when using existing Table

[jabrennem]

This might be a user error, but I am using an existing DynamoDB table with the DynamoDBStreamToLambda class. When I do cdk diff or cdk synth, I receive this error.

jsii.errors.JSIIError: Object of type @aws-cdk/core.Resource is not convertible to @aws-cdk/aws-dynamodb.Table

The object that is being passed to the existing_table_obj is <jsii._reference_map.InterfaceDynamicProxy object at 0x10afdbb50>. from_table_name states that it returns an object of type ITable. Perhaps this is the issue? Is there a way to convert ITable to a Table object?

Reproduction Steps

table = db.Table.from_table_name(self, 'StreamTable', 'myexistingtable')

DynamoDBStreamToLambda(
    self, 
    'TableStreamToLambda',
    existing_table_obj=table,
    lambda_function_props=lb.FunctionProps(
        function_name=function_name,
        code=lb.Code.from_asset('./lambda_functions'),
        runtime=lb.Runtime.PYTHON_3_8,
        handler='index.handler'
))

Error Log

jsii.errors.JSIIError: Object of type @aws-cdk/core.Resource is not convertible to @aws-cdk/aws-dynamodb.Table

Environment

• CDK CLI Version: 1.83.0 (build 827c5f4)
• CDK Framework Version: 1.80.0
• AWS Solutions Constructs Version : 1.80.0
• OS : Mac
• Language : python

Other

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This is 🐛 Bug Report

[hnishar]

jabrennem@ While existing_table_obj can be converted to accept ITable instead of Table, the limitation of ITable is it does not support any mutating operation on the existing table. I'll look into this if this pattern does not require such operation, than it can be converted to accept ITable instead of Table

[biffgaut]

We have added this change (changing props from Table to ITable) to the backlog. It has been approved and assigned, but there is no ETA at this time.