[Kimchi-devel] [WOK RFC] Update objectstore information while migrating to new structure.

[Aline Manera]

Hi Paulo,

Good catch!

I also found a similar issue related to the virtual machines.
We currently save the OS icon for each guest in the objectstore.
Originally, it refereed to /images/icon-<os>.png and this path changed 
in the wok+kimchi infrastructure to /plugins/kimchi/images/icon-<os>.png
So while loading the the guests tab a lot of JS errors are displayed 
because /images/icon-<os>.png returns 404.

I liked your idea and we could do it on RPM/DEB post installation, but 
in this case, users running from local source would not be able to get 
the database updated.
So probably, on Kimchi starting up would be better. We just need to make 
sure the code would run once to update the database. For that we can add 
a tag to the database to identified it is already updated or not.

Regards,
Aline Manera

On 22/09/2015 18:38, Paulo Ricardo Paz Vital wrote:
> Hello guys.
>
> Doing some tests in the new Wok and Kimchi (as plugin) code I
> discovered something that can cause some issues for us. Let'me show a
> possible user case to explain better:
>
> The user uses some version of the current Kimchi (previous of 1.5.1 and
> called for now as, Kimchi_old) totally functional and operating. The
> user has a few templates created, which are stored in the the
> objectstore function of Kimchi, and for each template has the
> storagepool URI allocated for that template.
>
> The storagepool information has the following properties in Kimchi-old:
>
>      "storagepool": {
> 	"description": "Location of the storage pool",
>          "type": "string",
>          "pattern": "^/storagepools/[^/]+/?$",
>          "error": "KCHTMPL0015E"
>      }
>
> However, the new Wok+Kimchi_plugin structure changed the URI for all
> virtualization features and the pattern now is:
>
>      "^/plugins/kimchi/storagepools/[^/]+/?$"
>
> There's an issue when getting the information of all Kimchi-old
> templates from the objectstore, the URI information continues with the
> older pattern and some checks in the code will fail.
>
> My suggestion is to create an info-update process when the user upgrade
> from Kimchi-old to Wok+Kimchi_plugin, modifying the storagepool
> information of all templates that not follow the new pattern in the
> database already created.
>
> I'd like to know what do you guys think about and ask for more
> suggestions also.
>
> Best regards,