refactor: logger

backend/cmd/main.go

@@ -15,8 +15,7 @@ func main() {
 	}
 
 	// Setup logger
-	logger.InitLogger()
+  defer logger.Sync()
-    defer logger.GetLogger().Sync()
 
 	// Connect & migrate database
 	// models.Init()

backend/internal/logger/logger.go

@@ -1,13 +1,19 @@
 package logger
 
 import (
+	"sync"
+
 	"go.uber.org/zap"
 	"easywish/config"
 )
 
-var logger *zap.Logger
+var (
+	logger *zap.Logger
+	once   sync.Once
+)
 
-func InitLogger() {
+func GetLogger() *zap.Logger {
+	once.Do(func() {
 		var err error
 		cfg := config.GetConfig()
 
@@ -19,11 +25,10 @@ func InitLogger() {
 		if err != nil {
 			panic(err)
 		}
-
+	})
-		defer logger.Sync()
-}
-
-func GetLogger() *zap.Logger {
 	return logger
 }
 
+func Sync() error {
+	return logger.Sync()
+}