🚀 [Feature]: middleware/logger: use Logger interface

[folliehiyuki]

Feature Description

With the introduction of Logger interface (#2499), it is easier now to plug my own log library into Fiber. With that said, logger middleware still uses fmt.Sprintf().

It would be nice if logger middleware is extended to accept logging via Logger interface. This creates an easier method to have structure log for requests/responses without the need of making a custom external middleware. Judging from #1293 (comment), if we want to keep the current logger middleware as simple as it is, making a new logger middleware would also be reasonable.

Additional Context (optional)

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Code Snippet (optional)

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Checklist:

• I agree to follow Fiber's Code of Conduct.
• I have checked for existing issues that describe my suggestion prior to opening this one.
• I understand that improperly formatted feature requests may be closed without explanation.

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[efectn]

Hi. Can you provide a proof-of-concept? If we can do it without breaking something on v2, it's OK to me. Otherwise, we have to adjust logger middleware on v3.

[ReneWerner87]

@folliehiyuki

[folliehiyuki]

Can you provide a proof-of-concept? If we can do it without breaking something on v2, it's OK to me

I don't have a concrete idea how to do this cleanly right now.

Otherwise, we have to adjust logger middleware on v3.

That sounds reasonable to me. It's nothing urgent (at least for me) and also takes less effort (no need to keep the compatibility with the current template interface).

[haochunchang]

Hi, I would like to contribute this task as my first contribution to gofiber.

From what I read about the logger middleware and the Logger interface,
My first thought is that the target can be:
"making the logger.Config struct’s LoggerFunc field to accept the Logger interface."

This could include some modifications on the defaultLoggerInstance in the logger middleware.
If there is anything I need to be aware of, please feel free to tell me.
Thanks!

[efectn]

Hi, I would like to contribute this task as my first contribution to gofiber.

From what I read about the logger middleware and the Logger interface, My first thought is that the target can be: "making the logger.Config struct’s LoggerFunc field to accept the Logger interface."

This could include some modifications on the defaultLoggerInstance in the logger middleware. If there is anything I need to be aware of, please feel free to tell me. Thanks!

Hi @haochunchang feel free to create a PR