Open Stack

Thanks for the information, it's good to know the documentation. The further question is whether there is any XML format like document will be published for each release and all core projects, so that other cloud management software can read the changes, and deal with the fields variation.

For example, each project will maintain one XML file in its repository to record all API update in each release.

Best Regards
Chaoyi Huang ( Joe Huang )


-----Original Message-----
From: Matt Riedemann [mailto:mriedem at linux.vnet.ibm.com] 
Sent: Wednesday, January 13, 2016 10:56 AM
To: openstack-dev at lists.openstack.org
Subject: Re: [openstack-dev] [api][all] api variation release by release



On 1/12/2016 7:27 PM, joehuang wrote:
> Hello,
>
> As more and more OpenStack release are deployed in the production 
> cloud, multiple releases of OpenStack co-located in a cloud is a very 
> common situation. For example, "Juno" and "Liberty" releases co-exist 
> in the same cloud.
>
> Then the cloud management software has to be aware of the API 
> variation of different releases, and deal with the different field of 
> object in the request / response. For example, in "Juno", no 
> "multiattach" field in the "volume" object, but the field presents in "Liberty".
>
> Each releases will bring some API changes, it will be very useful that 
> the API variation will also be publish after each release is 
> delivered, so that the cloud management software can read and changes 
> and react accordingly.
>
> Best Regards
>
> Chaoyi Huang ( Joe Huang )
>
>
>
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Have you heard of this effort going on in multiple projects called microversions? For example, in Nova:

http://docs.openstack.org/developer/nova/api_microversion_history.html

Nova and Ironic already support microversioned APIs. Cinder and Neutron are working on it I think, and there could be others.

-- 

Thanks,

Matt Riedemann


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