fix(server): gorm logging

- add support for LOG_LEVEL env var (Resolves #271)

server/logs/logs.go

@@ -0,0 +1,63 @@
+package logs
+
+import (
+	"os"
+
+	"github.com/sirupsen/logrus"
+	log "github.com/sirupsen/logrus"
+)
+
+// LogUTCFormatter hels in setting UTC time format for the logs
+type LogUTCFormatter struct {
+	log.Formatter
+}
+
+// Format helps fomratting time to UTC
+func (u LogUTCFormatter) Format(e *log.Entry) ([]byte, error) {
+	e.Time = e.Time.UTC()
+	return u.Formatter.Format(e)
+}
+
+func InitLog(cliLogLevel string) *log.Logger {
+	// global log level
+	logrus.SetFormatter(LogUTCFormatter{&logrus.JSONFormatter{}})
+
+	// log instance for gin server
+	log := logrus.New()
+	log.SetFormatter(LogUTCFormatter{&logrus.JSONFormatter{}})
+
+	if cliLogLevel == "" {
+		cliLogLevel = os.Getenv("LOG_LEVEL")
+	}
+
+	var logLevel logrus.Level
+	switch cliLogLevel {
+	case "debug":
+		logLevel = logrus.DebugLevel
+	case "info":
+		logLevel = logrus.InfoLevel
+	case "warn":
+		logLevel = logrus.WarnLevel
+	case "error":
+		logLevel = logrus.ErrorLevel
+	case "fatal":
+		logLevel = logrus.FatalLevel
+	case "panic":
+		logLevel = logrus.PanicLevel
+	default:
+		logLevel = logrus.InfoLevel
+	}
+	// set log level globally
+	logrus.SetLevel(logLevel)
+
+	// set log level for go-gin middleware
+	log.SetLevel(logLevel)
+
+	// show file path in log for debug or other log levels.
+	if logLevel != logrus.InfoLevel {
+		logrus.SetReportCaller(true)
+		log.SetReportCaller(true)
+	}
+
+	return log
+}