func Start(dq mailbox.Dequeuer, conf jamon.Group) error {
pause, err := strconv.Atoi(conf.Get("pause"))
if err != nil {
log.Fatal("agent/pause configuration is not numeric")
}
cron := cronJob{
dq: dq,
config: conf,
failed: make(chan report),
done: make(chan report),
retry: make(chan report),
}
for {
time.Sleep(time.Duration(pause) * time.Second)
jobs, err := cron.dq.Dequeue()
if err != nil {
log.Printf("error dequeuing: %s", err)
continue
}
go func() {
for {
select {
case r, more := <-cron.done:
if !more {
return
}
dq.Delivered(r.msgID, r.rcpt)
case r := <-cron.retry:
dq.Retry(r.msgID, r.rcpt, r.reason)
case r := <-cron.failed:
dq.Failed(r.msgID, r.rcpt, r.reason)
}
}
}()
var wg sync.WaitGroup
wg.Add(len(jobs))
for host, pkg := range jobs {
go func() {
defer wg.Done()
cron.deliverTo(host, pkg)
}()
}
wg.Wait()
close(cron.done)
dq.Flush()
}
return nil
}
// Start initiates a new SMTP server given an Enqueuer and a configuration.
func Start(mq mailbox.Enqueuer, cfg jamon.Group) error {
if !cfg.Has("listen") || !cfg.Has("host") {
return ErrMinConfig
}
ln, err := net.Listen("tcp", cfg.Get("listen"))
if err != nil {
return err
}
srv := server{Enqueuer: mq, config: cfg}
srv.spec = commandSpec{
"HELO": cmdHELO,
"EHLO": cmdEHLO,
"MAIL": cmdMAIL,
"RCPT": cmdRCPT,
"DATA": cmdDATA,
"RSET": cmdRSET,
"NOOP": cmdNOOP,
"VRFY": cmdVRFY,
"QUIT": cmdQUIT,
}
for {
conn, err := ln.Accept()
if err != nil {
log.Printf("Error accepting an incoming connection: %s\r\n", err)
continue
}
go srv.createTransaction(conn)
}
}