support for named loggers and Loggers can be exported as stdlib loggers

logger.go

@@ -2,25 +2,34 @@ package logging
 
 import (
 	"fmt"
+	"log"
 	"os"
 )
 
 type Logger struct {
+	name     string
 	level    Level
 	backends []Backend
 }
 
-func NewLogger() (l *Logger) {
+func NewLogger(name string) (l *Logger) {
 	l = &Logger{
+		name:  name,
 		level: DEFAULT_LEVEL,
 	}
 	return
 }
 
+// Add a new Backend to the logger
 func (l *Logger) AddBackend(b Backend) {
 	l.backends = append(l.backends, b)
 }
 
+// Sets the backend list to the logger. Any existing backend will be lost
+func (l *Logger) SetBackend(b ...Backend) {
+	l.backends = b
+}
+
 func (l *Logger) SetLevel(level Level) {
 	l.level = level
 	for _, backend := range l.backends {
@@ -28,8 +37,24 @@ func (l *Logger) SetLevel(level Level) {
 	}
 }
 
+type buffer struct {
+	level  Level
+	logger *Logger
+}
+
+func (b *buffer) Write(p []byte) (n int, err error) {
+	b.logger.Log(b.level, string(p))
+	return len(p), nil
+}
+
+func (l *Logger) AsStdLog(level Level) *log.Logger {
+	stdLogger := log.New(&buffer{logger: l, level: level}, "", 0)
+
+	return stdLogger
+}
+
 func (l *Logger) Log(level Level, m string) {
-	r := NewRecord(level, m)
+	r := NewRecord(l.name, level, m)
 	for _, backend := range l.backends {
 		if r.Level >= backend.Level() {
 			backend.Write(r)

logging.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 )
 
-var logger *Logger
+var loggers map[string]*Logger
 
 type Level byte
 
@@ -37,19 +37,34 @@ func LevelByName(l string) (Level, error) {
 
 type Formatter func(*Record) string
 
-func GetLogger() (l *Logger) {
-	return logger
+func GetLogger(name string) (l *Logger) {
+	if name == "" {
+		name = "default"
+	}
+	l, ok := loggers[name]
+	if !ok {
+		l = NewLogger(name)
+		backend := NewStdoutBackend()
+		l.AddBackend(backend)
+		l.SetLevel(DEBUG)
+		loggers[name] = l
+	}
+	return l
 }
 
 var defaultFormatter Formatter = func(r *Record) string {
-	return fmt.Sprintf("%s [%s] %s\n",
-		r.Timestamp.Format("2006/01/02 15:04:05"), r.Level.Name(),
+	return fmt.Sprintf("%s [%s] %s: %s\n",
+		r.Timestamp.Format("2006/01/02 15:04:05"), r.Level.Name(), r.Logger,
 		strings.TrimSpace(r.Message))
 }
 
 func init() {
-	logger = NewLogger()
+	loggers = make(map[string]*Logger, 3)
+
+	logger := NewLogger("default")
 	backend := NewStdoutBackend()
 	logger.AddBackend(backend)
 	logger.SetLevel(DEBUG)
+
+	loggers["default"] = logger
 }

record.go

@@ -5,13 +5,15 @@ import (
 )
 
 type Record struct {
+	Logger    string
 	Timestamp time.Time
 	Level     Level
 	Message   string
 }
 
-func NewRecord(l Level, m string) (r *Record) {
+func NewRecord(name string, l Level, m string) (r *Record) {
 	r = &Record{
+		Logger:    name,
 		Level:     l,
 		Message:   m,
 		Timestamp: time.Now(),