I've seen another solution where you BCC your application and use that to
mark the flag as successful or not.
On Wed, Apr 14, 2010 at 6:19 AM, hawkett <hawk...@gmail.com> wrote:
> It seems the author is saying that he only sends one email per task,
> so the only 'email sent' flag to stick in memcache is the one that is
> occurring when the exception is raised. I'm not sure that solution
> will work - how can he know if an email has been sent successfully
> when the mail API is throwing an exception? He would need a list of
> the exceptions that occur *despite* the email being successfully
> sent. Seems a bit shaky to me. As the author says, this seems like a
> GAE bug - if GAE is going to raise the DeadlineExceededError on the
> mail API, then the mail should not be sent - either it succeeds within
> the deadline or it fails to meet the deadline - not both. I can see
> how this could be tricky to guarantee though....
>
> On Apr 12, 11:15 pm, "Ikai L (Google)" <ika...@google.com> wrote:
> > A possible solution would be to store emails where you have already sent
> a
> > message to in Memcache. If the tasks get retried, you check for the
> presence
> > of a key and email hash. If it exists, you don't send the message. If it
> > does not, you send the message and insert into Memcache.
> >
> >
> >
> >
> >
> > On Tue, Apr 6, 2010 at 3:33 PM, Ubaldo Huerta <uba...@gmail.com> wrote:
> > > I have a task that sends a single email which works well, but every
> > > now and then (every 100 emails or so, my guess), the tasks get's
> > > retried because of an exception is thrown while sending the email
> > > message. The problem is that the email message is actually sent even
> > > though the exception below is thrown. So, naturally, I'm lossing face
> > > sending duplicate emails. Is there a way around this before the bug
> > > gets fixed? :-(
> >
> > > File "/base/python_lib/versions/1/google/appengine/api/mail.py", line
> > > 742, in send
> > > make_sync_call('mail', self._API_CALL, message, response)
> > > File "/base/python_lib/versions/1/google/appengine/api/
> > > apiproxy_stub_map.py", line 78, in MakeSyncCall
> > > return apiproxy.MakeSyncCall(service, call, request, response)
> > > File "/base/python_lib/versions/1/google/appengine/api/
> > > apiproxy_stub_map.py", line 278, in MakeSyncCall
> > > rpc.CheckSuccess()
> > > File "/base/python_lib/versions/1/google/appengine/api/
> > > apiproxy_rpc.py", line 126, in CheckSuccess
> > > raise self.exception
> > > DeadlineExceededError: The API call mail.Send() took too long to
> > > respond and was cancelled.
> >
> > > --
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> > --
> > Ikai Lan
> > Developer Programs Engineer, Google App Enginehttp://
> googleappengine.blogspot.com|http://twitter.com/app_engine
>
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--
Ikai Lan
Developer Programs Engineer, Google App Engine
http://googleappengine.blogspot.com | http://twitter.com/app_engine
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