로거 정리

shared/logger.go

@@ -1,19 +1,24 @@
 package shared
 
 import (
+	"io"
 	"log"
 	"os"
 	"path"
 )
 
 var defLogger *log.Logger
+var defCloser func()
 
 func InitLogger() {
 	name, _ := os.Executable()
 	base := path.Base(name)
 
 	logfile, _ := os.OpenFile(base+".log", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0666)
-	defLogger = log.New(logfile, "", log.LstdFlags)
+	defCloser = func() {
+		logfile.Close()
+	}
+	defLogger = log.New(io.MultiWriter(logfile, os.Stdout), "", log.LstdFlags)
 }
 
 func Logger() *log.Logger {
@@ -21,8 +26,7 @@ func Logger() *log.Logger {
 }
 
 func CloseLogger() {
-	outfile := defLogger.Writer().(*os.File)
-	if outfile != nil {
-		outfile.Close()
+	if defCloser != nil {
+		defCloser()
 	}
 }