Dubbo GSoC 2023 - Dubbo SPI Extensions on WASM

WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Many capabilities of Dubbo support extensions, such as custom interceptors, routing, load balancing, etc. In order to allow the user's implementation to be used on Dubbo's multiple language SDKs, we can implement cross-platform operation based on wasm capabilities.

The implementation of this topic needs to provide a set of mechanisms for Wasm on Dubbo, covering the implementation of Java and Go. Also supports at least Filter, Router and Loadbalance.

https://issues.apache.org/jira/browse/DUBBO-115