[go] Allow user-defined Logger

[raskyld]

The Go ecosystem has a lot of opinionated logger, slog is indeed the one proposed by the standard library, it is good for general-purpose application but may fall short for high-performance applications.

If you are okay with that, I may contribute to wRPC Go codebase by allowing users to pass custom Loggers using the API of https://github.com/go-logr/logr so they integrate better with:

• The NATS Client wrapper,
• The generated bindings,

WDYT?

[rvolosatovs]

It appears that logr and slog are interoperable: https://github.com/go-logr/logr?tab=readme-ov-file#slog-interoperability

I'm not sure that we want to depend on anything outside the standard library and wRPC Go module in the generated bindings.

Are calls like slog.Debug (e.g.

wrpc/go/primitive.go

Line 96 in ef3aa63

slog.Debug("reading string length")

) the issue here?

If so, perhaps we could introduce an interface mimicking slog API and a global logger variable in wRPC Go module with setters and getters, which would allow users to customize this?

[raskyld]

That sounds like a really good idea indeed, and I also understand your concerns about expanding the dependencies.
Let's do our own custom interface so! Just we need to think about how we can make this interface support structured logging then..

I am pretty surprised the standard library doesn't have already an API.. that would have been really handy..