feat request(jwt-auth plugin): support fetch public key from jwks endpoint

[chenlujjj]

Description

Now in jwt-auth plugin configuration, the public key is a static string.
But in some scenarios, the public key may change over time, for example, it's exposed by a service's jwks endpoint.

It would be great to support such use cases.

[Baoyuantop]

Thanks for your report, very useful feature.

You might need to import some features from the lua-resty-openidc library, or use resty.http to implement JWKS retrieval and caching yourself to avoid making network calls for every request.

[chenlujjj]

Hi @Baoyuantop , thanks for reply!

I'm new to apisix ecosystem and community, wondering what's the normal procedure for a feature request issue, like:

• triaged by official maintainers and added to the roadmap, or
• picked up by some volunteers from the community, or
• implemented by the requester, or
• other ?

[Baoyuantop]

You can submit your detailed technical solution, and once the maintainers confirm it, you can submit the code.

[chenlujjj]

got it