mercury/web/app/log.go

package app

import (
	"net/http"
	"runtime/debug"
	"time"

	"github.com/go-chi/chi/v5/middleware"
	"github.com/rs/zerolog/log"
)

func (a *App) Logger(next http.Handler) http.Handler {
	fn := func(w http.ResponseWriter, r *http.Request) {
		ww := middleware.NewWrapResponseWriter(w, r.ProtoMajor)

		t1 := time.Now()
		defer func() {
			t2 := time.Now()

			// Recover and record stack traces in case of a panic
			if rec := recover(); rec != nil {
				log.Error().
					Str("type", "error").
					Timestamp().
					Interface("recover_info", rec).
					Bytes("debug_stack", debug.Stack()).
					Msg("Handler panicked")
				http.Error(ww, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
			}

			// log end request
			log.Debug().
				Timestamp().
				Str("remote_ip", r.RemoteAddr).
				Str("url", r.URL.Path).
				Str("proto", r.Proto).
				Str("method", r.Method).
				Int("status", ww.Status()).
				Dur("elapsed", t2.Sub(t1)).
				Int64("bytes_in", r.ContentLength).
				Int("bytes_out", ww.BytesWritten()).
				Msg(r.Method + " " + r.URL.Path)
		}()

		next.ServeHTTP(ww, r)
	}
	return http.HandlerFunc(fn)
}