On 2010-1-6 21:51, Tres Seaver wrote:
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> Wichert Akkerman wrote:
>
>>> I wouldn't go there, myself: among other things, you lose the ability
>>> to do coordination with repoze.retry (e.g., on Postgres' equivalent to a
>>> ConflictError).
>>
>> I'm not sure why you would loose that. I've never used repoze.retry, so
>> perhaps I'm missing something. Could you expand a bit on that?
>
> repoze.retry does what the Zope publisher does on ConflictErrors, but
> can be configured to catch other exceptions besides ConflictError:
> PGSQL has an optimistic concurrency mode which raises a simliar
> exception. You can also tweak the number of retries.
Ok.
> Wiring tm2 into the app makes it impossible to configure retry in the
> "correct" place via PasteDeploy: you would have to hardwire *it* into
> the app as well (retry needs to be between tm2 and the app).
That is what I would do indeed. Personally I consider endware to be part
of the application instead of its configuration, so I want that to be in
python. I gather that you and Chris feel otherwise, which is fine as well.
There is a small downside / awkwardness you have to deal with if you use
a paste deploy pipeline: you have to manually specify the config part of
your application if you use setup-app or any other paster command. In
other words you need to do:
paster setup-app config.ini#app
otherwise your setup method is called with the pipeline configuration
(since that is 'main') instead of the app configuration.
Wichert.
--
Wichert Akkerman <wich...@wiggy.net> It is simple to make things.
http://www.wiggy.net/ It is hard to make things simple.
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