Question: Picking a running workflow to trigger a signal method

[ganeshanj82]

Hi,
I am evaluating using cadence (python) for a workflow project. An important part of the workflow is to call a 3rd party service and wait for a result to come back (with timeout). This seems like a good use for the signal method. The 3rd party service message will be received asynchronously from SQS. In this case, how do I get the right workflow instance to trigger the signal on assuming that there are several workflows running with different ids? The pattern I was thinking of using in the sqs handler is:

• Retrieve a id from the message that maps to a running workflow id via some mechanism
• Retrieve a running workflow with that id if one exists
• If a workflow exists with that specific id, trigger the signal method on it.

Please let me know if this is possible, I was unable to find it from reading the code, but I might have missed something.

[firdaus]

Hi there, it's not yet ready for that use case yet.

I need to implement:
WorkflowClient.newWorkflowStub(Class workflowInterface, String workflowId);

So that you can look up the active workflow when that SQS message comes in.

Thanks for bringing this to my attention. I don't know how I missed it.

I'll schedule this for Phase 1.

[MrSaints]

Seems to be done by 566b976