diff --git a/docs/handlers/app.go b/docs/handlers/app.go index 1d58e945..77e3a956 100644 --- a/docs/handlers/app.go +++ b/docs/handlers/app.go @@ -9,6 +9,7 @@ import ( "os" "time" + log "github.com/Sirupsen/logrus" "github.com/docker/distribution" "github.com/docker/distribution/configuration" ctxu "github.com/docker/distribution/context" @@ -101,6 +102,7 @@ func NewApp(ctx context.Context, configuration configuration.Configuration) *App app.configureEvents(&configuration) app.configureRedis(&configuration) + app.configureLogHook(&configuration) // configure storage caches if cc, ok := configuration.Storage["cache"]; ok { @@ -291,6 +293,31 @@ func (app *App) configureRedis(configuration *configuration.Configuration) { })) } +// configureLogHook prepares logging hook parameters. +func (app *App) configureLogHook(configuration *configuration.Configuration) { + logger := ctxu.GetLogger(app).(*log.Entry).Logger + for _, configHook := range configuration.Log.Hooks { + if !configHook.Disabled { + switch configHook.Type { + case "mail": + hook := &logHook{} + hook.LevelsParam = configHook.Levels + hook.Mail = &mailer{ + Addr: configHook.MailOptions.SMTP.Addr, + Username: configHook.MailOptions.SMTP.Username, + Password: configHook.MailOptions.SMTP.Password, + Insecure: configHook.MailOptions.SMTP.Insecure, + From: configHook.MailOptions.From, + To: configHook.MailOptions.To, + } + logger.Hooks.Add(hook) + default: + } + } + } + app.Context = ctxu.WithLogger(app.Context, logger) +} + func (app *App) ServeHTTP(w http.ResponseWriter, r *http.Request) { defer r.Body.Close() // ensure that request body is always closed. diff --git a/docs/handlers/hooks.go b/docs/handlers/hooks.go new file mode 100644 index 00000000..7bbab4f8 --- /dev/null +++ b/docs/handlers/hooks.go @@ -0,0 +1,53 @@ +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 +} diff --git a/docs/handlers/mail.go b/docs/handlers/mail.go new file mode 100644 index 00000000..39244909 --- /dev/null +++ b/docs/handlers/mail.go @@ -0,0 +1,45 @@ +package handlers + +import ( + "errors" + "net/smtp" + "strings" +) + +// mailer provides fields of email configuration for sending. +type mailer struct { + Addr, Username, Password, From string + Insecure bool + To []string +} + +// sendMail allows users to send email, only if mail parameters is configured correctly. +func (mail *mailer) sendMail(subject, message string) error { + addr := strings.Split(mail.Addr, ":") + if len(addr) != 2 { + return errors.New("Invalid Mail Address") + } + host := addr[0] + msg := []byte("To:" + strings.Join(mail.To, ";") + + "\r\nFrom: " + mail.From + + "\r\nSubject: " + subject + + "\r\nContent-Type: text/plain\r\n\r\n" + + message) + auth := smtp.PlainAuth( + "", + mail.Username, + mail.Password, + host, + ) + err := smtp.SendMail( + mail.Addr, + auth, + mail.From, + mail.To, + []byte(msg), + ) + if err != nil { + return err + } + return nil +}