feat(backend): add logging middleware and image compression endpoints, enhance environment variable handling

backend/internal/utils/env.go

@@ -4,12 +4,21 @@ import (
 	"github.com/spf13/viper"
 )
 
-var v = viper.New()
+var v *viper.Viper
 
 func init() {
+	InitEnv()
+}
+
+func InitEnv() {
+	if v != nil {
+		return
+	}
+	v = viper.New()
 	v.SetConfigName(".env")
 	v.SetConfigType("env")
 	v.AddConfigPath(".")
+	v.AddConfigPath("../")
 	v.AutomaticEnv()
 	if err := v.ReadInConfig(); err != nil {
 		panic(err)
@@ -17,6 +26,7 @@ func init() {
 }
 
 func GetEnv(key string) string {
+	InitEnv()
 	return v.GetString(key)
 }
 

backend/internal/utils/redis.go

@@ -10,7 +10,7 @@ var rdb *redis.Client = InitRedis()
 var ctx = context.Background()
 
 func InitRedis() *redis.Client {
-	opt, err := redis.ParseURL("redis://192.168.100.5:6379/3")
+	opt, err := redis.ParseURL(GetEnv("REDIS_URL"))
 	if err != nil {
 		panic(err)
 	}

backend/internal/utils/zap.go

@@ -0,0 +1,22 @@
+package utils
+
+import "go.uber.org/zap"
+
+var sugar *zap.SugaredLogger
+
+func init() {
+	InitLogClient()
+}
+
+func InitLogClient() {
+	if sugar != nil {
+		return
+	}
+	logger, _ := zap.NewProduction()
+	sugar = logger.Sugar()
+}
+
+func GetLogClient() *zap.SugaredLogger {
+	InitLogClient()
+	return sugar
+}

backend/main.go

@@ -13,6 +13,7 @@ func main() {
 	e.Use(middleware.SessionMiddleware())
 	e.Use(middleware.AuthMiddleware())
 	e.Use(middleware.RateLimiterMiddleware())
+	e.Use(middleware.LoggerMiddleware())
 
 	e.POST("/file/create", controllers.CreateUploadTask)
 	e.POST("/file/slice", controllers.UploadFileSlice)

backend/middleware/logger.go

@@ -0,0 +1,26 @@
+package middleware
+
+import (
+	"backend/internal/utils"
+
+	"github.com/labstack/echo/v4"
+	"github.com/labstack/echo/v4/middleware"
+	"go.uber.org/zap"
+)
+
+func LoggerMiddleware() echo.MiddlewareFunc {
+	log := utils.GetLogClient()
+	return middleware.RequestLoggerWithConfig(middleware.RequestLoggerConfig{
+		LogURI:    true,
+		LogStatus: true,
+		LogValuesFunc: func(c echo.Context, v middleware.RequestLoggerValues) error {
+			log.Info("request",
+				zap.String("url", v.URI),
+				zap.Int("status", v.Status),
+				zap.String("method", v.Method),
+				zap.String("ip", v.RemoteIP),
+			)
+			return nil
+		},
+	})
+}