[openstack-dev] [all][heat][oslo] Public show and validation clients methods

Doug Hellmann doug at doughellmann.com
Thu Jul 9 18:20:57 UTC 2015

Excerpts from Sergey Kraynev's message of 2015-07-09 18:26:09 +0300:
> Hi community.
> I want to raise couple questions about openstack clients.
> In Heat we use other python-*clients for manipulating service's resources,
> but some stuff placed in shell.py modules and we are forced to duplicate
> some existing code.
> There are couple examples which I met last time:
>  - getting resource by name or id
> All clients implement this logic in the shell.py module and it's not
> possible to re-use it from client
> directly as single call of some function "resolve_by_name_or_id"
> (unfortunately same is for Heat too ). As result all external developers
> (and we too as orchestration tool) should copy logic in our repos and
> implement similar resolve methods for all services/resources.
> - show command for clients
> some of clients use base Resource class and they have "._info" attribute,
> but it's private and use it is not right too. But I did not see another
> solution, because clients have not some *_show public method for it too
> (except neutron :) ). Also there is additional issue, when clients use
> their own classes, without this attribute, e.g. glance v2.
> So my question: can we create mentioned above public methods for such stuff
> and make it as standard for all clients or may be discuss list of common
> public "interfaces" for all clients?

Until the SDK is ready for use, adding public methods or attributes
seems like the best approach.


> If it was raised early please point me, because this issue is really
> painful, when you try to implement
> common approach for all projects.
> Regards,
> Sergey.

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