The built-in "st2.action.file_written" trigger is not working.

SUMMARY

The "st2.action.file_written" trigger is not working when creating a new action.

STACKSTORM VERSION

3.7

OS, environment, install method

• Window 10, WSL 2: Ubuntu 22.04
• Docker

Steps to reproduce the problem

• Create a new rule with "st2.action.file_written" trigger and "core.echo" for output the payload of the trigger.
• Create a new action by st2client or st2web.

Expected Results

Execute the rule and output the payload of st2.action.file_written trigger.

Actual Results

Nothing!

Root cause:

Missing the "pack" info when dispatching this trigger:
https://github.com/StackStorm/st2/blob/v3.7/st2api/st2api/controllers/v1/actions.py#L533

def _dispatch_trigger_for_written_data_files(self, action_db, written_data_files):
        trigger = ACTION_FILE_WRITTEN_TRIGGER["name"]
        host_info = get_host_info()

        for file_path in written_data_files:
            payload = {
                "ref": action_db.ref,
                "file_path": file_path,
                "host_info": host_info,
            }
            self._trigger_dispatcher.dispatch(trigger=trigger, payload=payload)

Thanks!

In st2api/st2api/controllers/v1/actions.py, start at _dispatch_trigger_for_written_data_files and inspect how the trigger dispatcher is called for newly created actions. Reproduce the rule with st2.action.file_written and core.echo, then verify that the trigger fires and its payload is available to the rule.