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Nexus async workflow operation succeeds

A workflow invokes a Nexus operation backed by another workflow and receives its result.

Detailed spec

  • A Nexus service with a workflow-run operation is registered on the worker.
  • The caller workflow executes the operation against a Nexus endpoint and awaits the result.
  • The operation starts a handler workflow; the handler workflow's result is returned as the operation result and then as the caller workflow's result.
  • An async operation transitions Scheduled -> Started -> Completed.
  • The caller's NexusOperationStarted event links to the handler workflow's WorkflowExecutionStarted event, and the handler workflow's WorkflowExecutionStarted event links back to the caller's NexusOperationScheduled event.