nexus-cancelation

Nexus Cancellation

This sample shows how to cancel a Nexus operation from a caller workflow and specify a cancellation type. In this sample we will show using the NexusOperationCancellationTypeWaitRequested cancellation type, which allows the caller to return after the handler workflow has received the requested to be cancelled, but does not wait for the handler workflow to finish processing the cancellation request.

For more details on Nexus and how to set up to run this sample, please see the Nexus Sample.

Running the sample

In separate terminal windows:

Nexus handler worker

cd handler
go run ./worker \
    -target-host localhost:7233 \
    -namespace my-target-namespace

Nexus caller worker

cd caller
go run ./worker \
    -target-host localhost:7233 \
    -namespace my-caller-namespace

Start caller workflow

cd caller
go run ./starter \
    -target-host localhost:7233 \
    -namespace my-caller-namespace

Output

which should result in:

2025/02/27 12:57:40 Started workflow WorkflowID nexus_hello_caller_workflow_20240723195740 RunID c9789128-2fcd-4083-829d-95e43279f6d7
2025/02/27 12:57:40 Workflow result: ¡Hola! Nexus 👋