func (ths *LoopBackProvider) handleOutgoingMessages() {
log.Println("Entering handleOutgoingMessages.")
for {
select {
case m := <-ths.outgoing:
log.Println("An outgoing event arrived.")
if ths.failureStrategy.Failure(mtacontainer.EK_OK) == true {
//Oh no we fail
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_RESUBMIT, errors.New("Loop Back MTA is failing and going down"), m)
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_FATAL, errors.New("Loop Back MTA is down"), ths)
return // <- This actually stops this provider :-)
}
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_OK, errors.New("Loop Back MTA Got message"), ths)
var headers = m.GetHeaders()
if headers != nil {
var temp = headers[model.EML_HDR_FROM]
headers[model.EML_HDR_FROM] = headers[model.EML_HDR_TO]
headers[model.EML_HDR_TO] = temp
}
ths.incoming <- m
case c := <-ths.command:
log.Println("Got a command")
if c == commandprotocol.CMD_MTA_PROVIDER_SHUTDOWN {
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_FATAL, errors.New("Going down, SHUT DOWN Command"),
ths)
return
}
}
}
}
//
//
// Forward a login check to the backend
//
func (ths *ClientAPI) handleLogin(w http.ResponseWriter, r *http.Request) {
defer r.Body.Close()
ths.log.Println("Handle Login")
if len(r.Header["Authorization"]) < 1 {
ths.log.Println("Authorization header is missing")
http.Error(w, "Missing authorization", http.StatusBadRequest)
return
}
authStr := r.Header["Authorization"][0]
var username, password, ok = decodeBasicAuth(authStr, ths.log)
if ok == false {
ths.log.Println("Authorization failed it is not basic ")
http.Error(w, "Bad authorization", http.StatusBadRequest)
return
}
q := "/login?username="******"&password="******"http://localhost" + utilities.RECEIVE_BACKEND_LISTEN_FOR_CLIENT_API + q
resp, err := http.Get(backendLoginQuery)
if err == nil {
ths.log.Println("Ok connection to receiver backend")
sessionId, errAll := ioutil.ReadAll(resp.Body)
if errAll == nil {
if len(sessionId) < 64 {
ths.log.Println("Reporting back to UI that an error occured... " + goh.IntToStr(len(sessionId)))
http.Error(w, resp.Status, resp.StatusCode)
return
}
ths.log.Println("Adding session id " + string(sessionId))
ths.validSessions[string(sessionId)] = username
w.Write(sessionId)
return
} else {
ths.log.Println("Auch failed to read response body from Receiver backend.")
http.Error(w, "Internal Server Error", http.StatusInternalServerError)
}
} else {
http.Error(w, "Backend refuses login from user", http.StatusInternalServerError)
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_CRITICAL,
errors.New("Could not connect to receiver back end"), ths)
}
}
func (a *ClientAPI) serve() {
var mux = http.NewServeMux()
mux.HandleFunc("/go.api/alive", a.alivePingHandler)
mux.HandleFunc("/go.api/login", a.handleLogin)
mux.HandleFunc("/go.api/logout", a.logoutHandler)
mux.HandleFunc("/go.api/sendmail", a.sendMailHandler)
mux.HandleFunc("/", a.viewHandler)
var addr = ":" + strconv.Itoa(a.port)
a.events <- mtacontainer.NewEvent(mtacontainer.EK_OK, errors.New("Serving on port: "+addr))
err := http.ListenAndServeTLS(addr, "cert.pem", "key.pem", mux)
if err != nil {
log.Fatalln("[ClientApi, Error] " + err.Error())
}
}
func (mgp *MailGunProvider) mgSend(m model.Email) {
from := m.GetHeader(model.EML_HDR_FROM)
to := m.GetHeader(model.EML_HDR_TO)
subject := m.GetHeader(model.EML_HDR_SUBJECT)
content := m.GetContent()
message := mgp.mg.NewMessage(from, subject, content, to)
mgp.log.Println("Invoking MailGun API to send e-mail")
var mm, mailId, err = mgp.mg.Send(message)
// report MailGunProvider as down
if err != nil {
mgp.log.Println("MG Failed to send e-mail")
mgp.log.Println(err.Error())
if mgp.failureStrategy.Failure(mtacontainer.EK_CRITICAL) == false {
mgp.events <- mtacontainer.NewEvent(mtacontainer.EK_WARNING, err, mgp)
mgp.events <- mtacontainer.NewEvent(mtacontainer.EK_RESUBMIT, err, m)
} else {
mgp.Stop() // we are officially going down
mgp.events <- mtacontainer.NewEvent(mtacontainer.EK_FATAL, err)
mgp.log.Println("The MailGun Provider is considered Down.")
mgp.events <- mtacontainer.NewEvent(mtacontainer.EK_RESUBMIT, errors.New("MailGun is down for sending"), m)
for e := range mgp.out {
var ee model.Email = e
mgp.events <- mtacontainer.NewEvent(mtacontainer.EK_RESUBMIT, errors.New("MailGun is down for sending"), ee)
}
}
} else {
mgp.log.Println("MG Has sent email with success.")
mgp.failureStrategy.Success()
mgp.events <- mtacontainer.NewEvent(mtacontainer.EK_BEAT,
errors.New("MailGun says: "+mm+" for sending message giving it id "+mailId))
mgp.log.Println("After sending event on event channel")
mgp.events <- mtacontainer.NewEvent(mtacontainer.EK_INFORM_USER,
errors.New("Mail Delivered With MailGun Successfully"), m.GetSessionId())
}
}
func (ths *SendGridProvider) sgSend(m model.Email) {
message := sendgrid.NewMail()
message.From = m.GetHeader(model.EML_HDR_FROM)
message.To = m.GetHeaders()[model.EML_HDR_TO]
message.Subject = m.GetHeader(model.EML_HDR_SUBJECT)
for k, _ := range m.GetHeaders() {
if strings.Compare(k, model.EML_HDR_FROM) != 0 &&
strings.Compare(k, model.EML_HDR_TO) != 0 &&
strings.Compare(k, model.EML_HDR_SUBJECT) != 0 {
message.AddHeader(k, m.GetHeader(k))
}
}
message.SetText(m.GetContent())
err := ths.sg.Send(message)
// report SendGrid Provider as down
if err != nil {
ths.log.Println(err.Error())
if ths.failureStrategy.Failure(mtacontainer.EK_CRITICAL) == false {
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_RESUBMIT, errors.New("Sendgrid resubmits mail"), m)
} else {
ths.Stop() // we are officially going down
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_FATAL, err)
ths.log.Println("The SendGrid Provider is considered Down.")
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_RESUBMIT, errors.New("SendGrid is down for sending"), m)
for e := range ths.outgoing {
var ee model.Email = e
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_RESUBMIT, errors.New("SendGrid is down for sending"), ee)
}
}
} else {
ths.failureStrategy.Success()
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_BEAT,
errors.New("SendGrid send a message"))
ths.events <- mtacontainer.NewEvent(mtacontainer.EK_INFORM_USER, errors.New("Mail Delivered With SendGrid Successfully"), m.GetSessionId())
}
}