distribution/docs/handlers/hooks.go
xiekeyang 9d7c6923c1 Feature: Web Panic Reporting via hooks
This PR is for issue of "email after registry webapp panic" #41, improving my
previous design (closed).
It use self setting up hooks, to catch panic in web application.
And, send email in hooks handle directly, to no use new http server and
handler.

Signed-off-by: xiekeyang <keyangxie@126.com>
2015-05-31 14:21:22 +00:00

53 lines
1.1 KiB
Go

package handlers
import (
"bytes"
"errors"
"fmt"
"strings"
"text/template"
"github.com/Sirupsen/logrus"
)
// logHook is for hooking Panic in web application
type logHook struct {
LevelsParam []string
Mail *mailer
}
// Fire forwards an error to LogHook
func (hook *logHook) Fire(entry *logrus.Entry) error {
addr := strings.Split(hook.Mail.Addr, ":")
if len(addr) != 2 {
return errors.New("Invalid Mail Address")
}
host := addr[0]
subject := fmt.Sprintf("[%s] %s: %s", entry.Level, host, entry.Message)
html := `
{{.Message}}
{{range $key, $value := .Data}}
{{$key}}: {{$value}}
{{end}}
`
b := bytes.NewBuffer(make([]byte, 0))
t := template.Must(template.New("mail body").Parse(html))
if err := t.Execute(b, entry); err != nil {
return err
}
body := fmt.Sprintf("%s", b)
return hook.Mail.sendMail(subject, body)
}
// Levels contains hook levels to be catched
func (hook *logHook) Levels() []logrus.Level {
levels := []logrus.Level{}
for _, v := range hook.LevelsParam {
lv, _ := logrus.ParseLevel(v)
levels = append(levels, lv)
}
return levels
}