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// Copyright (C) 2017 Nippon Telegraph and Telephone Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !windows
package main
import (
"log/syslog"
"os"
"os/signal"
"runtime"
"runtime/debug"
"strings"
"syscall"
log "github.com/sirupsen/logrus"
lSyslog "github.com/sirupsen/logrus/hooks/syslog"
)
func init() {
go func() {
sigCh := make(chan os.Signal, 1)
signal.Notify(sigCh, syscall.SIGUSR1)
for range sigCh {
runtime.GC()
debug.FreeOSMemory()
}
}()
}
func addSyslogHook(host, facility string) error {
dst := strings.SplitN(host, ":", 2)
network := ""
addr := ""
if len(dst) == 2 {
network = dst[0]
addr = dst[1]
}
priority := syslog.Priority(0)
switch facility {
case "kern":
priority = syslog.LOG_KERN
case "user":
priority = syslog.LOG_USER
case "mail":
priority = syslog.LOG_MAIL
case "daemon":
priority = syslog.LOG_DAEMON
case "auth":
priority = syslog.LOG_AUTH
case "syslog":
priority = syslog.LOG_SYSLOG
case "lpr":
priority = syslog.LOG_LPR
case "news":
priority = syslog.LOG_NEWS
case "uucp":
priority = syslog.LOG_UUCP
case "cron":
priority = syslog.LOG_CRON
case "authpriv":
priority = syslog.LOG_AUTHPRIV
case "ftp":
priority = syslog.LOG_FTP
case "local0":
priority = syslog.LOG_LOCAL0
case "local1":
priority = syslog.LOG_LOCAL1
case "local2":
priority = syslog.LOG_LOCAL2
case "local3":
priority = syslog.LOG_LOCAL3
case "local4":
priority = syslog.LOG_LOCAL4
case "local5":
priority = syslog.LOG_LOCAL5
case "local6":
priority = syslog.LOG_LOCAL6
case "local7":
priority = syslog.LOG_LOCAL7
}
hook, err := lSyslog.NewSyslogHook(network, addr, syslog.LOG_INFO|priority, "bgpd")
if err != nil {
return err
}
log.AddHook(hook)
return nil
}
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