Fiber: 🚀 Structured logging

[akshaybabloo]

Describe the solution you'd like

Google cloud platform's logging can viewed with structured logging, it would be good to have one.

Describe alternatives you've considered

I have tried using zap, writing a custom logger, but for some reason the status code comes as 200, and then there is an error.

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[kiyonlin]

Hey @akshaybabloo Do you mean the middleware logger should support structured logging(e.g. json)?

[akshaybabloo]

Ya it would render something like this on GCP:

[kiyonlin]

How about this:

package main

import (
    "github.com/gofiber/fiber"
    "github.com/gofiber/fiber/middleware"
)

func main() {
    app := fiber.New()
    app.Use(middleware.Logger(`{"pid":${pid}, "timestamp":"${time}", "status":${status}, "latency":"${latency}", "method":"${method}", "path":"${path}"}` + "\n"))
    app.Get("/", func(_ *fiber.Ctx) {})
    app.Listen(3000)
}

And log contents are:

{"pid":21327, "timestamp":"2020/07/29 13:41:03", "status":200, "latency":"0s    ", "method":"GET", "path":"/"}
{"pid":21327, "timestamp":"2020/07/29 13:46:53", "status":200, "latency":"0s    ", "method":"GET", "path":"/"}

Btw, the output maybe has small defects ("latency":"0s ") now.

[akshaybabloo]

OK I will give that a try. thank you.

[kiyonlin]

Feel free to re-open this issue if you have any further question.

[esoteloferry]

Hello!, taking the title as structured logger, I started using go and gofiber recently (so very new , but enthusiastic!).

So I am using the middleware logger to record the requests , but what if I I want to record other events f.e. in gracefully shutdown recipe, I can use logger to save the cleaning tasks. Or simply , to log some events inside the handler. Or to log errors .
What is your approach or recommended guideline for this? keeping everything in one file? I was initially considering to use the middleware logger (but did not figure out how to do it). But now I think that it does not make sense to use it for other reasons than middleware things.