Added support for executing a sub-workflow #1363
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danielgerlag
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Sep 20, 2025
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danielgerlag
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danielgerlag
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Happy to merge this if we can revert the WaitFor primitive changes.
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| return ExecutionResult.WaitForEvent(EventName, EventKey, effectiveDate); | ||
| var eventKey = context.Workflow.Reference ?? EventKey; |
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This does not make sense, why would we default to the reference field as the wait key? This could be a major breaking change.
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I don't think we should be changing the behaviour of the WaitFor primitive to support this feature
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@danielgerlag thanks for pointing that out. The parent workflow must wait for sub workflow to finish and I thought the sub workflow can publish an event containing the parent reference.
My question is how can I propagate the parent workflow id to sub workflow? Should I save it as sub workflow data?
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Describe the change
This PR adds a support to run a sub-workflow from the main workflow.
Describe your implementation or design
New step builder was added to support sub-workflow. The step starts a new workflow when executed with given workflow id (name). The workflow gets an reference to main workflow, the main workflow then waits for a workflow completed event triggered from the sub-workflow and continues.
If sub-event expects an event then the event should be published with parent workflow id since the sub-workflow id is not known.
An error in the sub-workflow terminates it and consequently terminates the parent workflow as well.
Tests
Yes
Breaking change
EndWorflowwill raise theWorkflowCompletedevent (which will probably solve If using EndWorkflow() no event for WorkflowCompleted LifeCycleEvent #1353)ExecutionErrortable