In my module I have a manager-style object in the Gateway scope to which we can add typed EventListeners. This works great in Java, but we have a use-case that would benefit from being able to add an event listener for a specific project (that is very specific to a customer, and so we'd like to not include anything related to it in the module itself).
We thought perhaps we could add an event listener with Python in the Gateway Startup Script, but quickly found that doing so was a little convoluted, to say the least. In the end, I wrote a wrapper class for the event that handles clean up and what-not, and it appears to "work", but unfortunately it doesn't seem to have access to most of the script engine tools we'd need, like the system namespace. So it's not good for much beyond throwing text in the wrapper log.
I was wondering whether there was a good method to add a Gateway-scoped event handler where a customer using the module could add in a custom script -- similar to the web dev module's handlers.
There's lots of possible ways to do this, but one of the easiest on you and your end users is to just send a message (from your module code) to a specific project's named message handler.