[kepler-dev] DDFDirector + WebService actor infinite loop

[Peter Elespuru]

Hello,

I came across this older list entry:

http://mercury.nceas.ucsb.edu/kepler/pipermail/kepler-dev/2008-November/013469.html

while attempting to remedy a similar problem by creating a custom 
ArrayToSequence actor, only to realize I was using the wrong director to 
begin with...

My workflow is fairly straight forward. It obtains some data from a web 
service, massages the proprietary ASCII format it receives into 
something the SequencePlotter can handle, and plots the result.

However, when changing to DDF (from SDF), my flow ends up in an infinite 
loop unless stopped manually via the UI, or unless I specify an exact 
number of iterations to the DDFDirector. Otherwise, it makes
repeated calls to the web service and happily appends the results to the 
plotter.

I've combed through the user and dev mail archives, as well as Google 
and haven't been able to come up with a solution so far.

Any thoughts ?

Regards,
-Peter Elespuru