56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package logrus_papertrail
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import (
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"fmt"
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"net"
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"os"
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"time"
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"github.com/Sirupsen/logrus"
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)
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const (
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format = "Jan 2 15:04:05"
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)
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// PapertrailHook to send logs to a logging service compatible with the Papertrail API.
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type PapertrailHook struct {
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Host string
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Port int
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AppName string
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UDPConn net.Conn
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}
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// NewPapertrailHook creates a hook to be added to an instance of logger.
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func NewPapertrailHook(host string, port int, appName string) (*PapertrailHook, error) {
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conn, err := net.Dial("udp", fmt.Sprintf("%s:%d", host, port))
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return &PapertrailHook{host, port, appName, conn}, err
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}
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// Fire is called when a log event is fired.
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func (hook *PapertrailHook) Fire(entry *logrus.Entry) error {
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date := time.Now().Format(format)
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msg, _ := entry.String()
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payload := fmt.Sprintf("<22> %s %s: %s", date, hook.AppName, msg)
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bytesWritten, err := hook.UDPConn.Write([]byte(payload))
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if err != nil {
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fmt.Fprintf(os.Stderr, "Unable to send log line to Papertrail via UDP. Wrote %d bytes before error: %v", bytesWritten, err)
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return err
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}
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return nil
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}
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// Levels returns the available logging levels.
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func (hook *PapertrailHook) Levels() []logrus.Level {
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return []logrus.Level{
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logrus.PanicLevel,
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logrus.FatalLevel,
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logrus.ErrorLevel,
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logrus.WarnLevel,
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logrus.InfoLevel,
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logrus.DebugLevel,
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}
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}
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