dump 로직, 로깅 로직 개선

cmd/server/main.go

@@ -129,12 +129,22 @@ func newFileLogger(path string) fiber.Handler {
 		return func(c *fiber.Ctx) error { return c.Next() }
 	}
 
-	format := "${time} ${ip} ${method} ${path} ${protocol} ${status} ${latency_human} headers=${reqHeaders}\n"
+	format := "${time} ip=${ip} real_ip=${header:X-Real-IP} forwarded=${header:X-Forwarded-For} ${method} ${path} ${protocol} ${status} ${latency_human} ua=\"${ua}\" headers=\"${reqHeadersShort}\"\n"
 	cfg := logger.Config{
 		Format:     format,
 		TimeFormat: time.RFC3339,
 		TimeZone:   "Asia/Seoul",
 		Output:     writer,
+		CustomTags: map[string]logger.LogFunc{
+			"reqHeadersShort": func(output logger.Buffer, c *fiber.Ctx, data *logger.Data, param string) (int, error) {
+				const max = 1024
+				h := c.Request().Header.String()
+				if len(h) > max {
+					h = h[:max] + "...(truncated)"
+				}
+				return output.WriteString(strings.TrimSpace(h))
+			},
+		},
 	}
 	return logger.New(cfg)
 }