Hi Stian!
Yes, it would be similar to the loop forever, but I was thinking something
like a streaming data. Something like:
1. Open streaming
2. Receive data
3. Close streaming
2 could receive data in the same way as the pick activity from the bpel
activity and maybe I could design a new activity to open/close the stream
using the REST Server API. The workflow could continue running even if the
stream was closed.
Could you please tell me if this use case is possible with this design?
Thanks
Regards
Guzmán
----- Original Message -----
From: "Stian Soiland-Reyes" <[email protected]>
To: "List for general discussion and hacking of the Taverna project"
<[email protected]>
Sent: Wednesday, January 26, 2011 7:07 AM
Subject: Re: [Taverna-hackers] [Taverna server] Workflow event Listeners
> Perhaps an important question is what happens on the second piece of
> data, and what happens to the workflow outputs?
>
>
> Does the workflow finish after processing the first piece of data, or
> is it to 'loop forever' and process data whenever it's ready to be
> consumed?
>
> Alan's suggestion will do the first piece, while you could achieve
> loop-forever this by putting your processing workflow as a nested
> workflow, and in the parent workflow, in Advanced->Looping configure
> the nested workflow service to run forever, with a delay of say 1s.
>
>
> Alternatively you can start each workflow run individually using the
> Taverna Server REST API (or the Taverna Command line), calling it from
> the third-party system. Another side-benefit of this is that it would
> allow multiple runs in parallel compared to the loop-forever idea, and
> you would put the third-party system more in control.
>
>
> On Tue, Jan 25, 2011 at 13:37, Guzmán Llambías - INCO
> <[email protected]> wrote:
>> yes that's an option. I was thinking something using a push strategy
>> instead
>> of polling data. Something like the pick activity of ws-bpel process
>>
>>
>>
>> ----- Original Message -----
>> From: "Alan R Williams" <[email protected]>
>> To: <[email protected]>
>> Sent: Tuesday, January 25, 2011 11:34 AM
>> Subject: Re: [Taverna-hackers] [Taverna server] Workflow event Listeners
>>
>>
>>> On 25/01/2011 11:36, Guzmán Llambías - INCO wrote:
>>>> We have a third party system that will produce input data for our
>>>> workflows
>>>> and live it somewhere, so after the inputs are ready, we want to start
>>>> a
>>>> taverna workflow automaticaly with this inputs.
>>>
>>> You could do this with a beanshell that tries to read the data. If the
>>> data is not there then sleep and then loop. If it is there then send it
>>> to the output port of the beanshell where it will go into the rest of
>>> the workflow.
>>>
>>> Alan
>>>
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>>
>>
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>
>
>
> --
> Stian Soiland-Reyes, myGrid team
> School of Computer Science
> The University of Manchester
>
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> Download using promo code Free_Logger_4_Dev2Dev. Offer expires
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> http://p.sf.net/sfu/arcsight-sfd2d
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------------------------------------------------------------------------------
Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)!
Finally, a world-class log management solution at an even better price-free!
Download using promo code Free_Logger_4_Dev2Dev. Offer expires
February 28th, so secure your free ArcSight Logger TODAY!
http://p.sf.net/sfu/arcsight-sfd2d
_______________________________________________
taverna-hackers mailing list
[email protected]
Web site: http://www.taverna.org.uk
Mailing lists: http://www.taverna.org.uk/about/contact-us/
Developers Guide: http://www.taverna.org.uk/developers/
