mirror of https://github.com/grafana/grafana.git
105 lines
2.0 KiB
Go
105 lines
2.0 KiB
Go
//+build !windows,!nacl,!plan9
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package log
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import (
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"errors"
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"log/syslog"
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"os"
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"github.com/inconshreveable/log15"
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"gopkg.in/ini.v1"
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)
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type SysLogHandler struct {
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syslog *syslog.Writer
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Network string
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Address string
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Facility string
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Tag string
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Format log15.Format
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}
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func NewSyslog(sec *ini.Section, format log15.Format) *SysLogHandler {
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handler := &SysLogHandler{
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Format: log15.LogfmtFormat(),
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}
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handler.Format = format
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handler.Network = sec.Key("network").MustString("")
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handler.Address = sec.Key("address").MustString("")
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handler.Facility = sec.Key("facility").MustString("local7")
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handler.Tag = sec.Key("tag").MustString("")
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if err := handler.Init(); err != nil {
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Root.Error("Failed to init syslog log handler", "error", err)
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os.Exit(1)
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}
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return handler
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}
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func (sw *SysLogHandler) Init() error {
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prio, err := parseFacility(sw.Facility)
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if err != nil {
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return err
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}
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w, err := syslog.Dial(sw.Network, sw.Address, prio, sw.Tag)
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if err != nil {
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return err
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}
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sw.syslog = w
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return nil
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}
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func (sw *SysLogHandler) Log(r *log15.Record) error {
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var err error
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msg := string(sw.Format.Format(r))
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switch r.Lvl {
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case log15.LvlDebug:
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err = sw.syslog.Debug(msg)
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case log15.LvlInfo:
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err = sw.syslog.Info(msg)
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case log15.LvlWarn:
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err = sw.syslog.Warning(msg)
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case log15.LvlError:
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err = sw.syslog.Err(msg)
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case log15.LvlCrit:
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err = sw.syslog.Crit(msg)
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default:
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err = errors.New("invalid syslog level")
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}
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return err
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}
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func (sw *SysLogHandler) Close() {
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sw.syslog.Close()
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}
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var facilities = map[string]syslog.Priority{
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"user": syslog.LOG_USER,
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"daemon": syslog.LOG_DAEMON,
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"local0": syslog.LOG_LOCAL0,
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"local1": syslog.LOG_LOCAL1,
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"local2": syslog.LOG_LOCAL2,
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"local3": syslog.LOG_LOCAL3,
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"local4": syslog.LOG_LOCAL4,
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"local5": syslog.LOG_LOCAL5,
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"local6": syslog.LOG_LOCAL6,
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"local7": syslog.LOG_LOCAL7,
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}
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func parseFacility(facility string) (syslog.Priority, error) {
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prio, ok := facilities[facility]
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if !ok {
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return syslog.LOG_LOCAL0, errors.New("invalid syslog facility")
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}
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return prio, nil
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}
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