[FEATURE] (type-safe-api) WebSocket API support for Java

[cogwirrel]

Describe the feature

Add support for WebSocket APIs in Java

Use Case

Consistency with remainder of PDK

Proposed Solution

Need to add the following:

• [ ] Runtime: operation handler wrappers
• [ ] Runtime: @connect/@disconnect handler wrappers
• [ ] Runtime: interceptors
• [ ] Runtime: server sdk (wrapping API Gateway Management API SDK)
• [ ] Infrastructure
• [ ] Handler stubs
• [ ] @connect/@disconnect handler stubs
• [ ] WebSocket client library
• [ ] Integration with InfrastructureJavaProject

Other Information

The majority of scaffolding is there already for runtime/handlers/infra - the mustache templates for the java-async-xxx projects in packages/type-safe-api/scripts/generators are copy/pasted REST API implementations that need to be modified to work for websockets.

The projen projects (eg generated-java-async-runtime-project.ts) will likely need to be tweaked slightly to add any dependencies required.

The client library will need to be added - follow the same pattern as the TypeScript websocket client library.

Make sure to remove the validation check once implemented: https://github.com/aws/aws-pdk/blob/a0dda50691a756798521dd1c8cbf0d5c21bdc9d2/packages/type-safe-api/src/project/type-safe-websocket-api-project.ts#L225

Acknowledgements

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

PDK version used

0.23.26

What languages will this feature affect?

Java

Environment details (OS name and version, etc.)

OSX

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