Mailinglist Archive: zypp-devel (116 mails)

[Jiri Srain <jsrain@xxxxxxx>]

Dne pátek 22 červen 2007 14:30 Michael Andres napsal(a):
> On Fri, Jun 22, Jiri Srain wrote:
> > Hi!
> >
> > In order to allow workflows bound to patterns we need to extend the
> > pattern definition on the media as well as the database and in-memory
> > representation of a pattern. We need following tags:
> >
> > "workflow_file" : string // file describing the workflow on the media
> > "workflow_file_checksum" : the same as other checksums
> > "workflow_order" : string // to allow ordering, string for better
> > extendibility
> >
> > (the names can be adapted to fit attribute naming schema)
> >
> > The suggestions for the SuSEtags metadata format are
> >
> > =Wkf
> > =WkfCSum (if not specified in content file)
> > =WkfOrd
> >
> > ZYPP is not required to process this data anyhow (maybe except the
> > checksum?), all that's needed is to deliver the data to YaST. The update
> > of package bindings will be trivial.
>
> - But why putting this into the pattern definition?
>   Why not one (separate) file that maps pattern<->workflow, but spreading
>   it across several locations?

It is an option as well. But thhere must be a binding between a pattern and 
itw workflow and it must be possible to define it in all our supported 
metadata formats. That's the only requirement.

> - workflow_file and workflow_file_checksum must appear in the content
>   file anyway.
>
>   Otherwise we had to parse all the patterns to see whether a workflow
>   file changed and we must refresh. And changing the workflow would
>   require reloading the pattern (because of the changed checksum)

Right, but if a new workflow is added, you have to modify the pattern in the 
database anyway, since the workflow is a part of a pattern the very same way 
as packages the pattern should drag in.

Jiri

-- 
Regards,

Jiri Srain
YaST Team Leader
---------------------------------------------------------------------
SUSE LINUX, s.r.o.                             e-mail: jsrain@xxxxxxx
Lihovarska 1060/12                             tel: +420 284 028 959
190 00 Praha 9                                 fax: +420 284 028 951
Czech Republic                                 http://www.suse.cz