An event mapper program receives a stream of events based on the event key attribute. Specific handler classes are required to handle that event.

My requirement is that I want to be able to add new event handlers in the future, without restarting the event mapper program.

I am able to load the specific event handler classes dynamically.

```
def loadClass(self,module,file_name,class_name):
    try:
        worker_module = getattr(__import__(module+'.'+file_name),file_name)
        return getattr(worker_module, class_name)
    except Exception as e: 
        print e
        return None

```

I need a mapping between the event key attribute and the specific `module`,`file_name` and `class_name`

I'm thinking of maintaining the mapping in a seperate file with this mapping infomation, and read that to map every event, but I'm hoping that there is a better way.