distribution/registry/handlers/hooks.go

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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 {
host, _, ok := strings.Cut(hook.Mail.Addr, ":")
if !ok || host == "" {
return errors.New("invalid Mail Address")
}
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 := b.String()
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
}