On Tue, 3 Dec 2013, Olof SVENSSON wrote:
> I have committed patches that make DAWN workflow implementation use the
> Passerelle actor v5. These changes are necessary in order to take advantage
> of the latest Passerelle developments, e.g. the event director, connection to
> a database for task-based tracing etc.
>
> I have worked on these patches for a couple of weeks and they are thoroughly
> tested. All headless tests pass and I have also tested to run our beamline
> workflows. However, it's likely that you will have some error messages when
> trying to start existing workflows with the new DAWN version:
>
> * The expression mode parameter has now been completely removed. If an
> existing workflow .moml file contains this parameter the following
> error will be displayed:
>
> All you have to do is to press ok and then save the workflow. The expression
> mode will then be removed from the moml file so the next time you open this
> workflow there will be no error message. Matt and Baha are proposing to make
> this cleaning of the moml file automatically.
Hi all,
there is one disadvantage with anautomatic cleaning:
At least I am often switching back and forth between DAWN versions, e.g.
between my development version and the current release, working in the
same workspace. If I now would switch forward and backward again, I guess
that teh old version would not be able to understand correctly the .moml
file. If that is true, I'd suggest not to do the cleaning fully automatic,
but to ask for user confirmation, indicating the consequences.
> * If you would like to use the new event director you must delete any
> existing "WorkflowConfiguration.launch" file in your project,
> otherwise the event director class cannot be found by the workflow
> engine.
Also not very nice - can that be done semi-automatic (i.e. with
confirmation) as well? Are there any problems when switching back to an
older release then?
But if everything else works without this removing sucha file, it might
be sufficient to add this caveat to a documentastion of the new
director.
Cheers
Gero
> Please let me know if you see any other problems with this new version of the
> DAWN workflow implementation.
>
> Regards,
>
> Olof
>
>
>
--
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Gero Flucke
Group 'Experiment Control' (FS-EC)
* Scientific Software
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