/
log.go
78 lines (64 loc) · 1.46 KB
/
log.go
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package service
import (
"io"
"log"
"log/syslog"
"os"
)
// Logger is a subset of the standard log.Logger.
type Logger interface {
Print(v ...interface{})
Printf(format string, v ...interface{})
}
// Log configures optional loggers.
type Log struct {
ErrorLogger Logger
InfoLogger Logger
DebugLogger Logger
}
// DefaultInit configures at least the error and info loggers, targetting
// stderr or syslog.
func (l *Log) DefaultInit(network, addr, tag string, debug bool) (err error) {
var w io.Writer = os.Stderr
if addr != "" {
if w, err = syslog.Dial(network, addr, syslog.LOG_ERR|syslog.LOG_DAEMON, tag); err != nil {
return
}
}
l.ErrorLogger = log.New(w, "ERROR: ", 0)
l.InfoLogger = log.New(w, "INFO: ", 0)
if debug {
l.DebugLogger = log.New(w, "DEBUG: ", 0)
}
return
}
func (l *Log) Error(args ...interface{}) {
if l.ErrorLogger != nil {
l.ErrorLogger.Print(args...)
}
}
func (l *Log) Errorf(fmt string, args ...interface{}) {
if l.ErrorLogger != nil {
l.ErrorLogger.Printf(fmt, args...)
}
}
func (l *Log) Info(args ...interface{}) {
if l.InfoLogger != nil {
l.InfoLogger.Print(args...)
}
}
func (l *Log) Infof(fmt string, args ...interface{}) {
if l.InfoLogger != nil {
l.InfoLogger.Printf(fmt, args...)
}
}
func (l *Log) Debug(args ...interface{}) {
if l.DebugLogger != nil {
l.DebugLogger.Print(args...)
}
}
func (l *Log) Debugf(fmt string, args ...interface{}) {
if l.DebugLogger != nil {
l.DebugLogger.Printf(fmt, args...)
}
}