[kepler-users] Opal 2.0 and Kepler 1.0

[Daniel Crawl]

Hi Tirath,

There's a special Opal actor that works with Opal services.
I'm cc'ing its author, Luca Clementi, who can best discuss it.

  --dan


Tirath Ramdas wrote:
> Hi,
>
> I would like to deploy some apps with Opal 2.0, and to orchestrate 
> these with Kepler 1.0.0. For what it's worth, the 
> WebServicesAndDataTransformation example workflow does work for me.
>
> I've set up opal-ws-2.0 with jakarta-tomcat-5_0_30, with the 
> "/bin/date" sample service, locally (i.e. on the same system I'm 
> running Kepler). I get the desired result running the service with the 
> Opal generic client, with launchJob [1], and subsequently with the 
> queryStatus/getOutputs methods. Unfortunately, I can't repeat this 
> with Kepler, pointing to the endpoint 
> http://localhost:8080/opal2/services/DateServicePort?wsdl.
>
> [1] java edu.sdsc.nbcr.opal.GenericServiceClient -l 
> http://localhost:8080/opal2/services/DateServicePort -r launchJob
>
> I give some arbitrary input to the launchJobInput port which the actor 
> instantiates the moment I specify the endpoint and method (launchJob), 
> basically treating this input like a trigger. The result is the same 
> if it's a constant (1) or an empty string: the workflow returns 
> "executions finished" almost instantly, with no output on either the 
> launchJobOutput port or the error port. Looking at the Opal dashboard, 
> it doesn't look like any of these jobs get started.
>
> However, when I point Kepler's web service actor to the Axis builtin 
> "Version" endpoint, it works. With this endpoint, no input port is 
> instantiated on the web service actor.
>
> My web search returns lots of hits about Kepler and Opal, but it's 
> usually just mentioned in a bullet point - does anyone have this 
> actually working? What am I doing wrong?
>
> -tirath
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