Re: AW: [smila-dev] section on "when to use" to wiki forprocessing servi

[Georg Schmidt <gschmidt@xxxxxxx>]

That seem to be a general issue... regarding processing services and 
pipelets. Is there some kind of lookup mechanism to discover service 
usages during update process?

A sample:

The BPEL service is using several instances of processing services or 
pipelets, or to be more specific instances of a BPEL workflow. But how 
does the runtime discover this difference. Is the BPEL service the 
instance that is restarted during the update process? I mean what will 
happen if i want to update a service or change its configuration at 
runtime which other parts of the application are affected? Is the BPEL 
service restarted (including instances that have no reference to the 
updated processing service or pipelet)?

How do we handle that point?

Please share your thoughts.


Georg Schmidt wrote:
> Hi Daniel,
>
> thanks for these guidelines.
>
> How do you think of the life cycle of a processing service in 
> conjunction with the update process of such a service? E.g. how do you 
> find all users of that service and how do you restart them after the 
> update process?
>
> Are there already thoughts going on in that area?
>
> Update process <-> Pipelining, ...
>
> Kind Regards,
>
> Georg
>
>
> Daniel.Stucky@xxxxxxxxxxx wrote:
> > Hi all,
> >
> > I've added section 3 "When to use a ProcessingService" to page 
> > http://wiki.eclipse.org/SMILA/Documentation/Pipelets_and_ProcessingServices. 
> >
> > I've also added links to this page on pages
> > - 
> > http://wiki.eclipse.org/SMILA/Development_Guidelines/How_to_write_a_Pipelet 
> >
> > - 
> > http://wiki.eclipse.org/SMILA/Development_Guidelines/How_to_write_a_ProcessingService 
> >
> >
> > Feel free to add links on other pages or add comments.
> >
> > Bye,
> > Daniel
> >
> >  
> > > -----Ursprüngliche Nachricht-----
> > > Von: smila-dev-bounces@xxxxxxxxxxx [mailto:smila-dev-
> > > bounces@xxxxxxxxxxx] Im Auftrag von Ivan Churkin
> > > Gesendet: Freitag, 24. April 2009 08:07
> > > An: Smila project developer mailing list
> > > Betreff: Re: [smila-dev] section on "when to use" to wiki forprocessing
> > > services
> > >
> > > Hi,
> > >
> > > about processing service...
> > > pipelets now is possible to configure by a set of parameters.
> > > its good to have ability to pass parameters to processing service
> > >
> > > guess its quite easy to implement
> > > just additional parameter to interface of PipeletConfiguration type and
> > > pass it from pipeline
> > >
> > > --
> > > Regards, Ivan
> > >
> > >
> > > Thomas Menzel wrote:
> > >    
> > > > hi,
> > > >
> > > >
> > > >
> > > > i think we should add a section on when to use a processing service
> > > >       
> > > in
> > >    
> > > > contrast to a normal pipelet.
> > > >
> > > >
> > > >
> > > > my guess is, that the motivation is
> > > >
> > > > - in regard to startup/creation times
> > > >
> > > > - state needs to be kept beyond pipelets life cycle
> > > >
> > > >
> > > >
> > > > any volunteers?
> > > >
> > > >
> > > >
> > > > Kind regards
> > > >
> > > > Thomas Menzel @ *brox *IT-Solutions GmbH
> > > >
> > > >
> > > >
> > > > ---------------------------------------------------------------------
> > > >       
> > > ---
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