[users at bb.net] Dynamic generation of schedulers in bb9

[Pierre Tardy]

I forgot that buildbot travis is already doing exactly what you described,
but for steps:

https://github.com/buildbot/buildbot_travis/blob/master/buildbot_travis/travisyml.py#L86

The magic of yaml is that you can build the python objects directly from
the yaml.
Pierre

On Sun, Apr 30, 2017 at 9:57 AM Pierre Tardy <tardyp at gmail.com> wrote:

> Hi Paulo,
> The plugin modules are indeed not really modules, and you cannot really
> call getattr on it or patch it.
>
> I could not find documentation on the inner working of the plugin loader,
> but there is always the source code.
>
> the www service is loading dynamically the list of www plugins. You can
> get soe ideas there:
>
> https://github.com/buildbot/buildbot/blob/master/master/buildbot/www/service.py#L186
> and
>
> https://github.com/buildbot/buildbot/blob/master/master/buildbot/www/service.py#L270
>
> Pierre
>
> On Tue, Apr 25, 2017 at 1:30 PM Paulo Matos <pmatos at linki.tools> wrote:
>
>> Hi all,
>>
>> Using bb0.9.6 here with Python3.
>> All good, except when I try to do dynamic loading of schedulers. I think
>> this might be an issue with Python instead of bb but my guess is that
>> someone here might be able to help.
>>
>> If I do:
>>
>> from buildbot.plugins import *
>> b = schedulers.SingleBranchScheduler(...)
>>
>>
>> all is good _but_ imagine I have a string with 'SingleBranchScheduler'
>> and want to create a SingleBranchScheduler.
>>
>> I tried:
>> from buildbot.plugins import *
>> import importlib
>>
>> m = importlib.import_module('schedulers')
>> schedclass = getattr(m, 'SingleBranchScheduler')
>> b = schedclass(...)
>>
>> This fails at the import_module time. My guess is that this is due to
>> the tricks being playing by plugins/__init__.py to allow importing
>> schedulers. However, I am not sure how to work around this.
>>
>> My goal is to be able to have a json interface to define schedulers in
>> an easy way and read that in master.cfg. Then, of course, scheduler
>> class names will come in as a string and I need to transform that into a
>> class for instantiation.
>>
>> Kind regards,
>>
>> --
>> Paulo Matos
>> _______________________________________________
>> users mailing list
>> users at buildbot.net
>> https://lists.buildbot.net/mailman/listinfo/users
>>
>
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