Event Notification
You can create custom event notification plug-ins to monitor server and client activity. Your plug-in can trap any Internal Events raised by the server and respond to them in whatever manner you decide. For more information, see Creating Event Notification Plug-ins.
Logging plug-ins and authorization plug-ins are specific types of event plug-ins. Logging plug-ins monitor event notices raised by the server and write information about the events to a log. Authorization plug-ins trap authorizable events and determine whether the requested action identified by the event can be performed. For more information, see Creating Logging Plug-ins and Creating Authorization Plug-ins.