Description
`Apache ShenYu` is a Java native API Gateway for service proxy, protocol conversion and API governance.

`WASM`(WebAssembly) bytecode is designed to be encoded in a size- and load-time-efficient binary format. WebAssembly aims to leverage the common hardware features available on various platforms to execute in browsers at machine code speed.

`WASI`(WebAssembly System Interface) allows WASM to run in non browser environments such as Linux.

This plugin should base on [WasmPlugin](https://github.com/apache/shenyu/issues/4612), whcih means other languages, as long as their code can be compiled into WASM bytecode (such as Rust/golang/C++), can be used to write ShenYu plugins.

[kitex](https://github.com/cloudwego/kitex) is a Go RPC framework with high-performance and strong-extensibility for building micro-services.

You can find useful information [here](https://github.com/cloudwego/kitex/issues/1237).

The usage documentation for WasmPlugin is [here](https://shenyu.apache.org/docs/next/developer/custom-plugin/).

Relevant Skills
Know the use of Apache ShenYu, especially the wasm plugin.
Familiar with Golang and Java.

Task List

• [ ] add `shenyu-client-kitex` to [shenyu-client-golang](https://github.com/apache/shenyu-client-golang);
• [ ] add `shenyu-plugin-kitex` module;
• [ ] add `shenyu-spring-boot-starter-plugin-kitex` module;
• [ ] add `shenyu-integrated-test-kitex` module;
• [ ] add doc to [shenyu-website](https://github.com/apache/shenyu-website) for `KitexPlugin`;

Links:

website： https://shenyu.apache.org/

issues: https://github.com/apache/shenyu/issues/5425

 
Difficulty: Major
Project size: ~350 hour (large)
Potential mentors:
zhangzicheng/mahaitao, mail: zhangzicheng@apache.org , mahaitao@apache.org
Project Devs, mail: dev@shenyu.apache.org

What

https://datatracker.ietf.org/doc/html/rfc8617

https://arc-spec.org/

The Authenticated Received Chain (ARC) protocol provides an
authenticated "chain of custody" for a message, allowing each entity
that handles the message to see what entities handled it before and
what the message's authentication assessment was at each step in the
handling.

IE secured and standard Received headers.

Example:

            ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none;
            b=S4DQRVgRLMeqank+UkagI9DIPrecaQa+tD+qrvD1XyuYolqGtWYole5yzajb6B71t9ceuFfCWYBmbze89vRt9bCc4KpcjEjzEzuf0xTo4HevTzZ62DEqXKzuXn+nWSGEAdrAcXS3w4RaoyeFC3ypKalcHJggiMStBBKuMG2k1jTk5vxirVqtxLr526AQ3XNGDEewIRMyhbjKDHKinjknJGLucWWli5YOheM4CDVwZXsbNbfhp8TPQitFd411+SDWRduqN2uKE/IqHn1FgqacCKkQaew5MS+GywnbCiNp2BHRgHMJbOt2gIHhFFLiPAow/98PyAdCPAqRmHqvUqSyRQ==
            ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com;
            s=arcselector9901;
            h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1;
            bh=FrVWL4P2FSzOMb/KTATCDQLYPJHy7pwVkwAdt3ueFh8=;
            b=E+f/prHAHynoo8GBK4s4Dxsdch6uPcErYd9R9h24Lb9sHlBVycnXby5PjcwqGtnvqEo14+8MEdxv41PYzIGHldjWh8CPgK6YHeWu+Zk8zwy05atOXXRgGkiRdge2bFSgtP4RLvoyV9kwngnR/vCIbSyTchnrZKyQ2IVCyZbEZtpDBgv4YtF9/972A+hZQLvymg4rZai74RDrVxVPJ2hmKOBSfaqTlUIm82HO5D2DMbbN50EmN9cicVOVkFo1d9m7sz7azq5VzybS/52B4nd7uby7ITkM/Enw/tihr9E6NHA31HgqEt8dx9pjTt4VJjVZbjSrv1AyKBl6VSxPerKzeA==
            ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass
            smtp.mailfrom=docaposte.fr; dmarc=pass action=none header.from=docaposte.fr;
            dkim=pass header.d=docaposte.fr; arc=none
            

How

Implement a Mailet implementing ARC

Implement a Matcher validating ARC

Documentation (README)

If applicable, parsing ARC records shall be done as a separate maven module.

Definition of done

• Absence of ARC headers shall be nicely handled
• Failed ARC shall be rejected
• Able to send email to gmail (validates ARC)
• Passes the ARC test suite https://github.com/ValiMail/arc_test_suite
• Apache james registered on https://arc-spec.org/?page_id=79

GSOC notes

Presenting a 1 week POC on the topic (as a separate mailet) would greatly improve the submission.

How to write custom mailet / matcher: https://github.com/apache/james-project/tree/master/examples/custom-mailets