Re: Zeo and two processes changing the zodb - not getting the up to date version of the object

Thanks, I haven't used monkey patches before.

I have now wrapped my readonly code in an explicit transaction and using 
readCurrent seems to be doing the job. More testing needed though.

On Thursday, 2 February 2017 09:50:34 UTC, Julien Muchembled wrote:
>
> Le 02/02/17 à 10:26, Jo Gilder a écrit : 
> > Hi, do you have an example of this in use? I can't see where it is used 
> in your code base. 
>
> It's a monkey-patch. Once this module is loaded, we know that we have a 
> up-to-date view of the DB when we start a transaction. 
>
> Here is a place where it's important for us to have such behaviour: 
>   
> https://lab.nexedi.com/nexedi/erp5/blob/f6d96c460323a5b7094feff2fbbf545deb9195db/product/CMFActivity/Activity/SQLBase.py#L497 
>
> To check this, we also have a unit test at 
>   
> https://lab.nexedi.com/nexedi/erp5/blob/f6d96c460323a5b7094feff2fbbf545deb9195db/product/ERP5/tests/testInvalidationBug.py#L93 
>
> Julien 
>
> > On Wednesday, 1 February 2017 18:05:11 UTC, Julien Muchembled wrote: 
> > 
> >     Le 02/01/17 à 18:37, Jo Gilder a écrit : 
> >     > I'm running zeo 4. Is there any way to do this without upgrading? 
> We are a week away from a release and upgrading zeo means upgrading lots of 
> other packages too. 
> >     > 
> >     You can use our monkey-patch on 
> >       Connection.ping 
> >     and 
> >       Connection.newTransaction 
> > 
> >     
> https://lab.nexedi.com/nexedi/erp5/blob/master/product/ERP5Type/patches/ZODBConnection.py 
> <
> https://lab.nexedi.com/nexedi/erp5/blob/master/product/ERP5Type/patches/ZODBConnection.py> 
>
> > 
> >     Julien 
> > 
>

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