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/*
* Copyright (C) 2014 ~ 2018 Deepin Technology Co., Ltd.
*
* Author: jouyouyun <jouyouwen717@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package log
import (
"log/syslog"
)
const defaultSyslogTagPrefix = ""
var (
// SyslogTagPrefix define the prefix of syslog tag, default is
// empty.
SyslogTagPrefix = defaultSyslogTagPrefix
)
type backendSyslog struct {
name string
writer *syslog.Writer
}
func newBackendSyslog(name string) (b *backendSyslog) {
b = &backendSyslog{}
b.name = name
var err error
b.writer, err = newSyslogWriter(name)
if err != nil {
std.Println("<info> syslog is not available:", err)
return nil
}
return
}
func newSyslogWriter(name string) (l *syslog.Writer, err error) {
tag := SyslogTagPrefix + name
l, err = syslog.New(syslog.LOG_DAEMON, tag)
return
}
func (b *backendSyslog) log(level Priority, msg string) (err error) {
switch level {
case LevelDebug:
err = b.writer.Debug(msg)
case LevelInfo:
err = b.writer.Info(msg)
case LevelWarning:
err = b.writer.Warning(msg)
case LevelError:
err = b.writer.Err(msg)
case LevelPanic:
err = b.writer.Emerg(msg)
case LevelFatal:
err = b.writer.Emerg(msg)
default:
err = errUnknownLogLevel
}
return
}
func (b *backendSyslog) close() (err error) {
err = b.writer.Close()
return
}
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