Use of YAML for defining complex tests (or Python...?)

Use of YAML for defining complex tests (or Python...?)

[John Spray]

Hi,

I noted with interest the rather complex .yaml file in this PR:
https://github.com/ceph/ceph-qa-suite/pull/428/files

...with the accompanying addition of loop constructs in this PR:
https://github.com/ceph/teuthology/pull/481

Teuthology YAML files appear to be at risk of becoming a fully fledged 
scripting language.  Why not write python scripts instead, for the more 
complex tests (e.g. anything that would need the full_sequential or loop 
constructs)?

On the cephfs side, we hit the point where test procedures were complex 
enough to need their own mini-framework inside tasks/cephfs -- a similar 
structure could be useful for people working on other subsystems as well.

Cheers,
John

Re: Use of YAML for defining complex tests (or Python...?)

[Loic Dachary]

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On 05/05/2015 13:35, John Spray wrote:> Hi,
> 
> I noted with interest the rather complex .yaml file in this PR:
> https://github.com/ceph/ceph-qa-suite/pull/428/files
> 
> ...with the accompanying addition of loop constructs in this PR:
> https://github.com/ceph/teuthology/pull/481
> 
> Teuthology YAML files appear to be at risk of becoming a fully fledged scripting language.  Why not write python scripts instead, for the more complex tests (e.g. anything that would need the full_sequential or loop constructs)?

I guess we should be careful to not abuse YAML where scripts would be more appropriate. I tend to agree with you: singleton-nomsgr/all/11429.yaml should be a script.

My 2cts

> 
> On the cephfs side, we hit the point where test procedures were complex enough to need their own mini-framework inside tasks/cephfs -- a similar structure could be useful for people working on other subsystems as well.
> 
> Cheers,
> John
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-- 
Loïc Dachary, Artisan Logiciel Libre


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