Init golang project

- Gin
- Gorm
- Viper
- Logrus

Signed-off-by: Asai Neko <sugar@sne.moe>

logger/logrus.go

@@ -0,0 +1,59 @@
+package logger
+
+import (
+	"os"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	log "github.com/sirupsen/logrus"
+)
+
+func Init() {
+	FileLogger := false
+	DebugMode := true
+
+	if FileLogger {
+		gin.DisableConsoleColor()
+		file, err := os.OpenFile("app.log", os.O_APPEND|os.O_CREATE|os.O_RDWR, 0666)
+		if err != nil {
+			log.Panicln("Error opening log file: ", err)
+		}
+		log.SetFormatter(&log.JSONFormatter{})
+		log.SetOutput(file)
+		log.SetLevel(log.DebugLevel)
+	} else {
+		log.SetFormatter(&log.JSONFormatter{})
+		log.SetOutput(os.Stdout)
+		log.SetLevel(log.WarnLevel)
+	}
+
+	if DebugMode {
+		gin.SetMode(gin.DebugMode)
+		log.SetLevel(log.DebugLevel)
+	} else {
+		gin.SetMode(gin.ReleaseMode)
+	}
+}
+
+func Gin() gin.HandlerFunc {
+	return func(ctx *gin.Context) {
+		startTime := time.Now()
+		ctx.Next()
+		endTime := time.Now()
+		latencyTime := endTime.Sub(startTime)
+		reqMethod := ctx.Request.Method
+		reqUri := ctx.Request.RequestURI
+		statusCode := ctx.Writer.Status()
+		clientIP := ctx.ClientIP()
+
+		log.WithFields(log.Fields{
+			"METHOD":    reqMethod,
+			"URI":       reqUri,
+			"STATUS":    statusCode,
+			"LATENCY":   latencyTime,
+			"CLIENT_IP": clientIP,
+		}).Info("HTTP REQUEST")
+
+		ctx.Next()
+	}
+}