// Send a mail using the SendGrid API
func SendMail(c appengine.Context, mail *Mail) error {
client := &http.Client{
Transport: &urlfetch.Transport{
Context: c,
Deadline: time.Duration(20) * time.Second,
},
}
// Build the data needed for the API call
data := url.Values{
"api_user": []string{conf.MAIL_API_USER},
"api_key": []string{conf.MAIL_API_KEY},
"to": []string{mail.To},
"toname": []string{mail.ToName},
"subject": []string{mail.Subject},
"html": []string{mail.Html},
"from": []string{mail.From},
"fromname": []string{mail.FromName},
}
// Request the SendGrid API
resp, err := client.PostForm(conf.MAIL_SEND_API, data)
if err != nil {
return errors.New(err)
}
defer resp.Body.Close()
// Decode the Mail API response
var r mailAPI
if err := json.NewDecoder(resp.Body).Decode(&r); err != nil {
return errors.New(err)
}
// Test for errors in the api call
if r.Message != "success" {
return errors.Format("cannot send the mail: api %s message: %v",
r.Message, r.Errors)
}
return nil
}
// Serves a http request
func (fn Handler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
c := appengine.NewContext(req)
// Emit some compatibility anti-cache headers for IE
w.Header().Set("X-UA-Compatible", "chrome=1")
w.Header().Set("Cache-Control", "max-age=0,no-cache,no-store,post-check=0,pre-check=0")
w.Header().Set("Expires", "Mon, 26 Jul 1997 05:00:00 GMT")
r := &Request{Req: req, W: w, C: c}
defer func() {
if rec := recover(); rec != nil {
err := errors.Format("panic recovered error: %s", rec)
r.processError(err)
}
}()
if err := fn(r); err != nil {
r.processError(err)
}
}