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Ok, thanks Josh. We switched to tenacity and it works very well for us )

Renat Akhmerov
@Nokia

On 23 Sep 2017, 11:51 +0700, Joshua Harlow <harlowja at fastmail.com>, wrote:
> Hi Renat,
>
> I was more just saying that depending on your situation it might be
> better to switch to using tenacity (not that the retry decorator is
> deprecated, though I wouldn't personally use it).
>
> As you mentioned in
> https://bugs.launchpad.net/oslo.service/+bug/1718635/comments/1 this
> class and decorator is not thread safe so if that is a concern for you
> then that is also better in tenacity.
>
> I think a lot of usage of that decorator though is like the following:
>
> def main_func():
>
> @loopingcall.RetryDecorator
> def inner_func():
> <do something that may need retries
>
> <do something
> inner_func()
> <do more something
>
> So likely thread-safety was never a concern, though I can't quite say...
> I think (but I might be wrong) when that class/code was being proposed I
> recommended just using 'retrying' (the precursor to tenacity) but
> bygones be bygones...
>
> Renat Akhmerov wrote:
> > Thanks Josh,
> >
> > I’m not sure I fully understand your point though. You mean it’s a
> > legacy (deprecated?) code that we should never use in our code? Should
> > it be considered a private class of oslo_service?
> >
> > In our global requirements tenacity is configured as "tenacity>=3.2.1”,
> > should we bump it to 4.4.0?
> >
> > Renat Akhmerov
> > @Nokia
> >
> > On 21 Sep 2017, 22:42 +0700, Joshua Harlow <harlowja at fastmail.com>, wrote:
> > > It does look like is sort of a bug,
> > >
> > > Though in all honesty I wouldn't be using oslo.service or that looping
> > > code in the future for doing retrying...
> > >
> > > https://pypi.python.org/pypi/tenacity is a much better library with more
> > > `natural` syntax and works more as one would expect (even under threaded
> > > situations).
> > >
> > > If I could of I would of never let 'loopingcall.py' become a file that
> > > exists, but the past is the past, ha.
> > >
> > > Renat Akhmerov wrote:
> > > > Hi Oslo team,
> > > >
> > > > Can you please check the bug [1]?
> > > >
> > > > There may be a problem with how looping.RetryDecorator works. Just
> > > > stumbled on it in Mistral. Not sure if it’s really a bug or made by
> > > > design. If it’s by design then maybe we need to have more accurate
> > > > documentation for it.
> > > >
> > > > FYI: We use this decorator in Mistral and it’s also used in Nova, [2].
> > > >
> > > > [1] https://bugs.launchpad.net/oslo.service/+bug/1718635
> > > > [2]
> > > > http://git.openstack.org/cgit/openstack/nova/tree/nova/virt/disk/mount/api.py
> > > >
> > > > Thanks
> > > >
> > > > Renat Akhmerov
> > > > @Nokia
> > > >
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