[et-mgmt-tools] virtinst/ImageFetcher.patch

[James Laska]

On Tue, 2008-04-08 at 20:24 +0100, Daniel P. Berrange wrote:
> On Tue, Apr 08, 2008 at 06:26:53PM +0000, James Laska wrote:
> > Greetings,
> > 
> > Spoke with Dan Berrangé on irc about using virtinst/ImageFetcher.py for
> > use in the snake project.  I've basically copied the contents with a few
> > tweaks.  Dan suggested sending the patch to et-mgmt-tools at redhat.com for
> > comments/thoughts.  The patch consists of 3 main hunks:
> > 
> >  1 Split acquireFile() into 2 new methods 
> >    > saveFile() - does what acquireFile() does now, downloads file,
> > writes contents to disk, returns its path
> >    > loadFile() - downloads file and returns file contents
> > 
> >  2 MountedImageFetcher().prepareLocation() will check if the requested
> > server:/path is already mounted
> >    > Supporting mtab code can be found at
> > http://git.fedorahosted.org/git/snake?p=snake;a=blob;f=snake/util.py;h=5815e28ce98e3a5c9dd0b0ec7b380cc05fd39d6c;hb=HEAD
> > 
> >  3 LocalImageFetcher()._acquireFile() will use grabber.urlopen so that
> > it can make use of of the progress callback when copying files via
> > saveTemp() calls.
> 
> There's a couple  of chunks in this paatch which directly depend on
> snake. eg
> 
> -        ret = subprocess.call(cmd)
> +        ret = snake.util.pcall(cmd, stderr=open('/dev/null', 'w'))
> 
> Aside from that, it looks reasonable.

subprocess doesn't exist on RHEL3 and RHEL4, so I had to provide a
helper to fill in the blanks in those environments.  

Additionally, there is some snake.util.get_mtab() methods that would
need definition if that chunk is used.  

Thanks,
James
-- 
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 James Laska         -- jlaska at redhat.com
 Quality Engineering -- Red Hat, Inc.
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