logrus/hooks/syslog/syslog.go

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//go:build !windows && !nacl && !plan9
// +build !windows,!nacl,!plan9
package syslog
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import (
"fmt"
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"log/syslog"
"os"
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"git.internal/re/logrus"
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)
// SyslogHook to send logs via syslog.
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type SyslogHook struct {
Writer *syslog.Writer
SyslogNetwork string
SyslogRaddr string
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}
// Creates a hook to be added to an instance of logger. This is called with
// `hook, err := NewSyslogHook("udp", "localhost:514", syslog.LOG_DEBUG, "")`
// `if err == nil { log.Hooks.Add(hook) }`
func NewSyslogHook(network, raddr string, priority syslog.Priority, tag string) (*SyslogHook, error) {
w, err := syslog.Dial(network, raddr, priority, tag)
return &SyslogHook{w, network, raddr}, err
}
func (hook *SyslogHook) Fire(entry *logrus.Entry) error {
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line, err := entry.String()
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if err != nil {
fmt.Fprintf(os.Stderr, "Unable to read entry, %v", err)
return err
}
switch entry.Level {
case logrus.PanicLevel:
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return hook.Writer.Crit(line)
case logrus.FatalLevel:
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return hook.Writer.Crit(line)
case logrus.ErrorLevel:
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return hook.Writer.Err(line)
case logrus.WarnLevel:
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return hook.Writer.Warning(line)
case logrus.InfoLevel:
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return hook.Writer.Info(line)
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case logrus.DebugLevel, logrus.TraceLevel:
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return hook.Writer.Debug(line)
default:
return nil
}
}
func (hook *SyslogHook) Levels() []logrus.Level {
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return logrus.AllLevels
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}