alrm/alarm/email/alarm.go

86 lines
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2021-01-24 13:32:39 -09:00
package email
import (
"fmt"
"net/smtp"
"strings"
"time"
)
func (a *AlarmEmail) Alarm(grp string, hst string, chk string, alerr error) error {
dt := EmailDetail{
Timestamp: time.Now().Format(time.RFC1123),
Group: grp,
Host: hst,
Check: chk,
Error: alerr,
}
c, err := smtp.Dial(a.SMTP)
if err != nil {
return err
}
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if a.User != "" && a.Pass != "" {
hostname := a.SMTP
hn := strings.Split(a.SMTP, ":")
if len(hn) > 1 {
hostname = hn[0]
}
auth := smtp.PlainAuth("", a.User, a.Pass, hostname)
err = c.Auth(auth)
if err != nil {
return err
}
}
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helo := "localhost"
tspl := strings.Split(a.From, "@")
if len(tspl) > 1 {
helo = tspl[1]
}
err = c.Hello(helo)
if err != nil {
return err
}
err = c.Mail(a.From)
if err != nil {
return err
}
for _, to := range a.To {
err = c.Rcpt(to)
if err != nil {
return err
}
}
m, err := c.Data()
if err != nil {
return err
}
fmt.Fprintf(m, "From: %s\r\n", a.From)
fmt.Fprintf(m, "To: %s\r\n", strings.Join(a.To, ";"))
fmt.Fprintf(m, "Subject: ")
err = a.subTemplate.Execute(m, dt)
if err != nil {
return err
}
fmt.Fprintf(m, "\r\n\r\n")
err = a.msgTemplate.Execute(m, dt)
if err != nil {
return err
}
err = m.Close()
if err != nil {
return err
}
err = c.Quit()
if err != nil {
return err
}
return nil
}