Temporal Activity does not pass Parameters with json:"-"

[Bryan]

Hi all,
I have an activity that sends a request body using REST API:

My TempRequest has 3 params: trxId, channel, and request.

trxId is not meant to be sent in the request body, but it is mapped in header and/or query parameter of the http request, that’s why it has json:"-". It is used inside adapter.UpdateStatus() (line 60).

Before calling workflow.ExecuteActivity(), I print the request, and trxId has value:

But when I print from inside the activity, it is gone:

Does it mean that when passing request to activity, there is some kind of marshalling and unmarshalling?

[askreet]

Yes, all activity executions are part of the workflow event history and are sent to the Temporal server serialized where the temporal server can request a worker pick up the activity execution.