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Beego/logs/smtp.go
2013-08-28 15:48:48 +08:00

102 lines
2.3 KiB
Go

package logs
import (
"encoding/json"
"errors"
"fmt"
"net/smtp"
"strings"
"time"
)
const (
subjectPhrase = "Diagnostic message from server"
)
// smtpWriter is used to send emails via given SMTP-server.
type SmtpWriter struct {
username string
password string
host string
subject string
recipientAddresses []string
level int
}
func NewSmtpWriter() LoggerInterface {
return &SmtpWriter{level: LevelTrace}
}
func (s *SmtpWriter) Init(jsonconfig string) error {
var m map[string]interface{}
err := json.Unmarshal([]byte(jsonconfig), &m)
if err != nil {
return err
}
if username, ok := m["username"]; !ok {
return errors.New("smtp config must have auth username")
} else if password, ok := m["password"]; !ok {
return errors.New("smtp config must have auth password")
} else if hostname, ok := m["host"]; !ok {
return errors.New("smtp config must have host like 'mail.example.com:25'")
} else if sendTos, ok := m["sendTos"]; !ok {
return errors.New("smtp config must have sendTos")
} else {
s.username = username.(string)
s.password = password.(string)
s.host = hostname.(string)
for _, v := range sendTos.([]interface{}) {
s.recipientAddresses = append(s.recipientAddresses, v.(string))
}
}
if subject, ok := m["subject"]; ok {
s.subject = subject.(string)
} else {
s.subject = subjectPhrase
}
if lv, ok := m["level"]; ok {
s.level = int(lv.(float64))
}
return nil
}
func (s *SmtpWriter) WriteMsg(msg string, level int) error {
if level < s.level {
return nil
}
hp := strings.Split(s.host, ":")
// Set up authentication information.
auth := smtp.PlainAuth(
"",
s.username,
s.password,
hp[0],
)
// Connect to the server, authenticate, set the sender and recipient,
// and send the email all in one step.
content_type := "Content-Type: text/plain" + "; charset=UTF-8"
mailmsg := []byte("To: " + strings.Join(s.recipientAddresses, ";") + "\r\nFrom: " + s.username + "<" + s.username +
">\r\nSubject: " + s.subject + "\r\n" + content_type + "\r\n\r\n" + fmt.Sprintf(".%s", time.Now().Format("2006-01-02 15:04:05")) + msg)
err := smtp.SendMail(
s.host,
auth,
s.username,
s.recipientAddresses,
mailmsg,
)
return err
}
func (s *SmtpWriter) Destroy() {
return
}
func init() {
Register("smtp", NewSmtpWriter)
}