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Celery, pyramid_celery, SQLAlchemy, and ZopeTransactionExtension?
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Thomas Hill  
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 More options Oct 9 2012, 3:38 am
From: Thomas Hill <tomlikestor...@gmail.com>
Date: Tue, 9 Oct 2012 00:38:59 -0700 (PDT)
Local: Tues, Oct 9 2012 3:38 am
Subject: Celery, pyramid_celery, SQLAlchemy, and ZopeTransactionExtension?
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I know it's a really specific set of ingredients, but I was wondering if
anyone has had any luck incorporating their pyramid app with celery, while
using their SQLAlchemy connection that's a scoped_session with the
ZopeTransactionExtension. I'm finding that when I put transaction.commit at
the end of my celery tasks in order to save the changed entities, the
entities are no longer available due to previous tasks having called
transaction.commit and removing the ones in question from the session.

I'd like to not have to create a sort of pyramid_tm for pyramid_celery;
hopefully there's something here that I'm missing.

Has anyone got any suggestions?

-Thomas


 
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John Anderson  
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 More options Oct 9 2012, 9:03 am
From: John Anderson <son...@gmail.com>
Date: Tue, 9 Oct 2012 10:01:03 -0300
Local: Tues, Oct 9 2012 9:01 am
Subject: Re: Celery, pyramid_celery, SQLAlchemy, and ZopeTransactionExtension?
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On 10/09, Thomas Hill wrote:

> I know it's a really specific set of ingredients, but I was wondering if
> anyone has had any luck incorporating their pyramid app with celery, while
> using their SQLAlchemy connection that's a scoped_session with the
> ZopeTransactionExtension. I'm finding that when I put transaction.commit at
> the end of my celery tasks in order to save the changed entities, the
> entities are no longer available due to previous tasks having called
> transaction.commit and removing the ones in question from the session.

> I'd like to not have to create a sort of pyramid_tm for pyramid_celery;
> hopefully there's something here that I'm missing.

> Has anyone got any suggestions?

> -Thomas

I've never had any issues using zopetm + pyramid_celery but if you can come up with an example I can probably fix it.

Here is a dummy example that I tried reproducing the problem with but it all works just fine:

https://github.com/sontek/pyramid_celery/tree/master/examples/long_ru...


 
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