project move

log/log.go

@@ -0,0 +1,47 @@
+package log
+
+import (
+	"io/ioutil"
+	"os"
+
+	logging "github.com/op/go-logging"
+)
+
+var (
+	logger      = logging.MustGetLogger("xc")
+	logfile     *os.File
+	initialized = false
+
+	// Debug proxy
+	Debug = logger.Debug
+	// Debugf proxy
+	Debugf = logger.Debugf
+)
+
+// Initialize logger
+func Initialize(logFilename string) error {
+	if logFilename == "" {
+		setupNullLogger()
+		return nil
+	}
+
+	logfile, err := os.OpenFile(logFilename, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		setupNullLogger()
+		return err
+	}
+	backend := logging.NewLogBackend(logfile, "", 0)
+	format := logging.MustStringFormatter(
+		`[%{time:15:04:05.000}] %{message}`,
+	)
+	backendFormatter := logging.NewBackendFormatter(backend, format)
+	logging.SetBackend(backendFormatter)
+	logger.Debug("logger initialized")
+	initialized = true
+	return nil
+}
+
+func setupNullLogger() {
+	backend := logging.NewLogBackend(ioutil.Discard, "", 0)
+	logging.SetBackend(backend)
+}