structrue, logger, main.go

log/logger.go

@@ -0,0 +1,24 @@
+package log
+
+import (
+	"io"
+	"log"
+	"os"
+	"time"
+)
+
+type writer struct {
+	io.Writer
+	timeFormat string
+}
+
+func (w writer) Write(b []byte) (n int, err error) {
+	return w.Writer.Write(append([]byte(time.Now().Format(w.timeFormat)), b...))
+}
+
+func New(msg string) *log.Logger {
+	if len(msg) > 0 {
+		return log.New(&writer{os.Stdout, "2006/01/02 15:04:05 "}, "["+msg+"] ", 0)
+	}
+	return log.New(&writer{os.Stdout, "2006/01/02 15:04:05 "}, "[info] ", 0)
+}