[kepler-dev] Best practice for custom actor development

[Chad Berkley]

Hi Ian,

The best way to create a kar file is to create a directory in the 
src/actors area for your new actor.  It must have an actor metadata file 
and a manifest.  Once you've done that, run 'ant buildkarlib' and the 
kar files will be put in kepler/kar.  Your actor will then show up in 
the actor library when you run kepler.  Note that the semanticAnnotation 
tag in the actor metadata determines where the actor shows up in the 
tree.  Once you are happy with your actor, you can then send the kar 
file to other people who can then just drop it into their kepler/kar 
directory and it should show up in the actor tree upon restart.  Let me 
know if you need any other help.  We're available most of the day on our 
#kepler IRC channel at irc.ecoinformatics.org.

chad

Ilkay Altintas wrote:
> Hi Ian,
> 
> You need to first build your custom actors by extending the actor 
> classes in Java. It is pretty straightforward. The basic steps for this 
> explained 
> at: http://www.kepler-project.org/Wiki.jsp?page=KeplerDevelopersTutorial 
> 
> After building your custom actors, you need to generate kar files for 
> each. (kar==kepler archive) With the kars generated, your Analysts can 
> plug the new actors in. Chad would be a better person to give you more 
> information on this process.
> 
> You might also like to check out the CVS versions of both Kepler and 
> Ptolemy to have a more recent copy than the Beta3 for development.  
> 
> Please let us know if you have any more questions.
> 
> -ilkay
> 
> -- 
> Ilkay ALTINTAS
> Lab Director, Scientific Workflow Automation Technologies (SWAT)
> San Diego Supercomputer Center(SDSC), UCSD
> 9500 Gilman Drive, MC: 0505  La Jolla, CA  92093-0505
> phone: (858) 822-5453                        fax: (858) 534-8303
> web: http://users.sdsc.edu/~altintas <http://users.sdsc.edu/%7Ealtintas>
> 
> 
> On Aug 15, 2007, at 7:28 AM, ian.brown at hsbcib.com 
> <mailto:ian.brown at hsbcib.com> wrote:
> 
>> Hi,
>>       I'm currently evaluating a number of systems to use within our real
>> time trading system. We have a number of models and statistics 
>> developed in
>> both MATLAB and R which we run over market data to generate trading
>> decisions. Rather than have an analyst work on the algorithm and then give
>> it to IT to implement (possibly incorrectly), I'm looking into various
>> options to smooth the workflow.
>> I've looked at Simulink and Stateflow and am now looking into Kepler and
>> Ptolemy. Given the built in support for R, MATLAB and Web Services, it
>> would seem to be quite a strong runner.
>> In order to evaluate the system properly, I need to create a couple of
>> custom actors. At the least, I need to write an actor that is a 
>> data-source
>> for the market data. I have a JAR file already which exposes some methods
>> to get this data, I just need to write a thin wrapper around it to 
>> make the
>> Actor. I then need to distribute this Actor to a couple of our analysis so
>> that they can evaluate the system.
>> What is the best practice to go about this? At the end I would ideally 
>> like
>> a zip or something that the Analysts can drop into their beta3 
>> installation
>> directories.
>>
>> Thanks,
>>
>> Ian
>>
>> Ian Brown
>> Director, Integrated Model Trading
>> HSBC
>>
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