feat: add specific log-message

_example/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"math/rand"
 	"net/http"
@@ -109,6 +110,18 @@ func main() {
 		c.String(http.StatusOK, "pong "+fmt.Sprint(time.Now().Unix()))
 	})
 
+	// Example of a custom message to the log
+	r.GET("/message", logger.SetLogger(
+		logger.WithLogger(func(_ *gin.Context, l zerolog.Logger) zerolog.Logger {
+			return l.Output(gin.DefaultWriter).With().Logger()
+		}),
+		logger.WithMessage("Request ended"),
+	), func(c *gin.Context) {
+		c.Error(errors.New("some error has occured here"))
+		c.Error(errors.New("and some error has occured there"))
+		c.String(http.StatusBadGateway, "pong "+fmt.Sprint(time.Now().Unix()))
+	})
+
 	// Example of skipper usage
 	r.GET("/health", logger.SetLogger(
 		logger.WithSkipper(func(c *gin.Context) bool {

logger.go

@@ -47,6 +47,8 @@ type config struct {
 	serverErrorLevel zerolog.Level
 	// pathLevels is a map of specific paths to log levels for requests with status code < 400.
 	pathLevels map[string]zerolog.Level
+	// message is a custom string that sets a log-message when http-request has finished
+	message string
 }
 
 const loggerKey = "_gin-contrib/logger_"
@@ -85,6 +87,7 @@ func SetLogger(opts ...Option) gin.HandlerFunc {
 		clientErrorLevel: zerolog.WarnLevel,
 		serverErrorLevel: zerolog.ErrorLevel,
 		output:           os.Stderr,
+		message:          "Request",
 	}
 
 	// Apply each option to the config
@@ -151,9 +154,8 @@ func SetLogger(opts ...Option) gin.HandlerFunc {
 			}
 			latency := end.Sub(start)
 
-			msg := "Request"
 			if len(c.Errors) > 0 {
-				msg = c.Errors.String()
+				cfg.message += " with errors: " + c.Errors.String()
 			}
 
 			var evt *zerolog.Event
@@ -182,7 +184,7 @@ func SetLogger(opts ...Option) gin.HandlerFunc {
 				Dur("latency", latency).
 				Str("user_agent", c.Request.UserAgent()).
 				Int("body_size", c.Writer.Size()).
-				Msg(msg)
+				Msg(cfg.message)
 		}
 	}
 }

options.go

@@ -157,3 +157,11 @@ func WithContext(fn func(*gin.Context, *zerolog.Event) *zerolog.Event) Option {
 		c.context = fn
 	})
 }
+
+// WithMessage is an option to set a custom log-message, when http-request has finished and logged
+// It takes a string as an argument and returns an Option.
+func WithMessage(message string) Option {
+	return optionFunc(func(c *config) {
+		c.message = message
+	})
+}