Mailinglist Archive: yast-devel (246 mails)

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Re: [yast-devel] Webyast base system model proposal
  • From: Josef Reidinger <jreidinger@xxxxxxx>
  • Date: Tue, 18 Aug 2009 12:35:17 +0200
  • Message-id: <4A8A83E5.4090109@xxxxxxx>
On 08/18/2009 10:23 AM, Klaus Kaempf wrote:
After thinking about it, I believe the 'base system model' can be
vastly simplified.

* Klaus Kaempf <kkaempf@xxxxxxx> [Aug 17. 2009 15:04]:
* Josef Reidinger <jreidinger@xxxxxxx> [Aug 17. 2009 14:35]:

Yes it should be possible, but then all modules must provide unified way
how to report, that it is not configured and it is often not stored

Right. This needs to be added to all (affected) services.

Actually, there's no need to change or implement any service.

You only need two state informations

1. The last (or currently) visited step of the workflow

This belongs to the session information (cookie) of the browser.
If this information is present, the workflow engine knows what to
call next.
If this information is not present, the workflow engine either
restarts from beginning or does not start at all. To decide this, one

2. If the setup workflow was finished successfully

This belongs to the backend as non-privileged information. It can be
as simple as touching a file (e.g. below /etc/webyast).
As long as the file does not exist, the user is forced into the
basic setup workflow after login.
If the file exists, the user is redirected to the controlpanel
after login.
This decision can be easily implemented in the webclients

The file approach also has the advantage that the backed can easily
resetted to re-run the setup workflow by removing the file.

Yes, it is similar how I implemented it now except, that it remember
done steps in backend and not session, so if you configure two modules
and another three remain, then you can just after new login configure
remaining three.
I hope I have to the end of week working prototype. And then we could
discuss about improvements. (I think that practical example shows more
problems then theoretical discussion).

Josef Reidinger
YaST team
maintainer of perl-Bootloader, YaST2-Repair, webyast modules language
and time
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