(lambda-event-sources): (starting position timestamp for kafka)

[nikovirtala]

Describe the feature

Allow user to start consuming Kafka Event Sources from a specific point in time: https://aws.amazon.com/about-aws/whats-new/2023/06/aws-lambda-starting-timestamp-kafka-sources/

Use Case

???

Proposed Solution

Add the startingPositionTimestamp to ManagedKafkaEventSource and SelfManagedKafkaEventSource.

Other Information

No response

Acknowledgements

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

CDK version used

v2.162.0

Environment details (OS name and version, etc.)

macOS 15.0 (24A335)

[ashishdhingra]

• AWS::Lambda::EventSourceMapping supports StartingPositionTimestamp as one of the supported properties.
• CDK L2 EventSourceMapping and CfnEventSourceMapping L1 constructs also supports startingPositionTimestamp.

@nikovirtala Thanks for submitting PR https://github.com/aws/aws-cdk/pull/31439.

[nikovirtala]

• CDK L2 EventSourceMapping supports startingPositionTimestamp.

Oh wow, I didn't even realize that. Now I only wonder why this functionality exists in two places and what their future is? 🤔

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