[ovirt-devel] UI Plugin to Upload ISO Files

[Federico Simoncelli]

----- Original Message -----
> From: "Alon Bar-Lev" <alonbl at redhat.com>
> To: "Nir Soffer" <nsoffer at redhat.com>
> Cc: "devel" <devel at ovirt.org>, "李建盛" <jiansheng.li at eayun.com>, "Lucas Vandroux" <lucas.vandroux at eayun.com>, "Liron
> Aravot" <laravot at redhat.com>, "潘礼洋" <liyang.pan at eayun.com>, "Michal Skrivanek" <mskrivan at redhat.com>
> Sent: Monday, December 15, 2014 5:52:36 PM
> Subject: Re: [ovirt-devel] UI Plugin to Upload ISO Files
> 
> ----- Original Message -----
> > From: "Nir Soffer" <nsoffer at redhat.com>
> > To: "Alon Bar-Lev" <alonbl at redhat.com>
> > Cc: "Itamar Heim" <iheim at redhat.com>, "devel" <devel at ovirt.org>, "Lucas
> > Vandroux" <lucas.vandroux at eayun.com>, "李建盛"
> > <jiansheng.li at eayun.com>, "潘礼洋" <liyang.pan at eayun.com>, "Michal Skrivanek"
> > <mskrivan at redhat.com>, "Liron Aravot"
> > <laravot at redhat.com>
> > Sent: Monday, December 15, 2014 6:47:44 PM
> > Subject: Re: [ovirt-devel] UI Plugin to Upload ISO Files
> > 
> > ----- Original Message -----
> > > From: "Alon Bar-Lev" <alonbl at redhat.com>
> > > To: "Itamar Heim" <iheim at redhat.com>
> > > Cc: "devel" <devel at ovirt.org>, "Lucas Vandroux"
> > > <lucas.vandroux at eayun.com>,
> > > "李建盛" <jiansheng.li at eayun.com>, "潘礼洋"
> > > <liyang.pan at eayun.com>, "Michal Skrivanek" <mskrivan at redhat.com>
> > > Sent: Sunday, December 14, 2014 11:47:26 PM
> > > Subject: Re: [ovirt-devel] UI Plugin to Upload ISO Files
> > > 
> > > 
> > > using ssh and/or nfs to send artifacts to hosts is something we should
> > > avoid
> > > so using iso/image uploader tools are not a solution.
> > > vdsm should support uploading images using its own protocol based on the
> > > authentication between engine and vdsm, is it already?
> > 
> > Vdsm does support upload over http/https directly to storage.
> > 
> > This feature is used to store ovf backups on storage domains, and probably
> > not very efficient, but may be good enough for now.
> > 
> > See vdsm/rpc/BindingXMLRPC.py (do_PUT)
> 
> thanks.
> I hear this function is not supported by the new jsonrpc, nor will it be
> supported when messaging will be used... so not sure if it is a good idea to
> add functionality on top of this one.

The format (xmlrpc/jsonrpc) here is not much interesting, the interesting
part is the transport. In fact current download/uploadImage uses REST
GET/PUT for downloading/uploading the images (only the errors/messages are
reported with xmlrpc or eventually they could be reported with jsonrpc).

By design they were not mixed with the other control APIs (because it's
not control, it's data). And indeed it cannot be transported with
messaging.

Uploading/dowloading data to/from the host involves a data transport
(and http REST is the most commonly used). Which is exactly what you
need here, and it was in fact designed for this use case.

> this should be core feature, it cannot be implemented as plugin within the
> current monolithic implementation.

+1

-- 
Federico