Re: mgr module options

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On Tue, 18 Dec 2018, Sebastian Wagner wrote:
> Am 17.12.18 um 23:02 schrieb Sage Weil:
> > See WIP pull request
> > 
> > 	https://github.com/ceph/ceph/pull/25597
> > 
> > The idea is to better unify the module options and the 'ceph config ...' 
> > commands.  Namely, [...]
> > There are some rough edges, though:
> > 
> > - The current modules have a mix of conventions for the default values.  
> >   The MgrMap::ModuleOption makes everything a string (default value, min, 
> >   max, etc.) to keep the encoding simple, but half of the modules define 
> >   default values as string and case at time of use (e.g., via int(...)), 
> >   and half use the native types (e.g., values of None or 123).  This makes the 
> >   generic code awkard.
> 
> Someone needs to do the conversion from strings to native Python types.
> Doing this conversion in a common place would have the benefit of having
> a more coherent options API. It would also be a bit less error prone.
> 
> devicehealth/self_heal is a good example. The code in master is
> obviously buggy. If we do the conversion from strings to bools in the
> module itself, we may end up with different implementations. Some
> modules would support "1" as a truth value, others wouldn't.

Totally agree.  Okay, I'll work toward this!

sage



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