Open Stack

On Mon, Feb 9, 2015 at 1:22 PM, Jay Pipes <jaypipes at gmail.com> wrote:

> On 01/20/2015 10:54 AM, Brian Rosmaita wrote:
>
>> From: Kevin L. Mitchell [kevin.mitchell at rackspace.com]
>> Sent: Monday, January 19, 2015 4:54 PM
>>
>>  When we look at consistency, we look at everything else in OpenStack.
>>>  From the standpoint of the nova API (with which I am the most familiar),
>>> I am not aware of any property that is ever omitted from any payload
>>> without versioning coming in to the picture, even if its value is null.
>>> Thus, I would argue that we should encourage the first situation, where
>>> all properties are included, even if their value is null.
>>>
>>
>> That is not the case for the Images API v2:
>>
>> "An image is always guaranteed to have the following attributes: id,
>> status, visibility, protected, tags, created_at, file and self. The other
>> attributes defined in the image schema below are guaranteed to
>> be defined, but is only returned with an image entity if they have
>> been explicitly set." [1]
>>
>
> This was a mistake, IMHO. Having entirely extensible schemas means that
> there is little guaranteed consistency across implementations of the API.
>

+1, Subtle hard to discover differences between clouds is a pain for
interchangeability.


>
> This is the same reason that I think API extensions are an abomination.
>
> Best,
> -jay
>
>
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