Create a task for sending e-mail instead of calling the mailservice
directly.
use this in your task (a task can be part of a transaction)
try{
...
} catch (Throwable thr) {
log.error(...);
}
and all exceptions will be catched. I think a task will be re-executed only
if it fails (throws an exception).
On Sat, Jul 10, 2010 at 6:43 PM, Marcus Brody <[email protected]> wrote:
> Hello,
>
> I would like to ask, if there is some way how to send mail only in
> case that some db transaction will be successful.
> I am not very experienced with gae, but I did study it now for about 2
> weeks.
>
> Desired output:
>
> 1) prepare email
> 2) db transaction.begin()
> 3) do some db operation
> 4) bind sending mail with current transaction (similar to
> how can you can attach Task to queue)
> 5) db transaction.commit()
>
> I am aware that I can queue mail sending task to task queue, but i
> cannot find the way how to do that mail sending task Idempotent
> without (i think) complicated locking mechanism .
> Most simple solution would be to put mail sending task to task queue,
> but this means mail could be send twice in some rare situation. (this
> is maybe not that bad but if there is some way how to avoid it, I
> would like to know)
>
> Thank you,
>
> Marcus
>
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--
Pieter Coucke
Onthoo BVBA
http://www.onthoo.com
http://www.koopjeszoeker.be
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