User metadata not propagated from child workflow command to child workflow's execution config

[dhiaayachi]

Expected Behavior

Like start workflow, I would expect start child workflow user metadata to end up on the execution config on the child workflow.

Actual Behavior

The user metadata only ends up on the event, not the actual child workflow

See https://github.com/temporalio/temporal/pull/5857 where user metadata propagation was added.

[dhiaayachi]

Thanks for reporting this!

This is a known issue. It was reported in https://github.com/temporalio/temporal/pull/5857

You can use GetInfo to access the user metadata.

[dhiaayachi]

Thanks for reporting this. User metadata only ends up on the event, not the actual child workflow. To set user metadata for a child workflow, you can use the StartChildWorkflowOptions object.

Here is an example of how to do it in the Go SDK:

childWorkflowOptions := workflow.ChildWorkflowOptions{
   // ...
   UserMetadata: map[string]string{
     "key": "value",
     "key2": "value2",
   },
}
ctx = workflow.WithChildOptions(ctx, childWorkflowOptions)

childWorkflowFuture := workflow.ExecuteChildWorkflow(ctx, YourOtherWorkflowDefinition, ChildParams{})
// ...

For other SDKs, refer to the documentation for setting user metadata on StartChildWorkflowOptions.