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       snmpa_notification_filter - Behaviour module for the SNMP agent notification filters.


       This   module   defines   the   behaviour   of   the   agent   notification   filters.   A
       snmpa_notification_filter compliant module must export the following functions:

         * handle_notification/2

       The semantics of them and their exact signatures are explained below.

       The purpose of notification filters is to allow for modification and/or suppression  of  a

       A misbehaving filter will be removed.


       handle_notification(Notif, Data) -> Reply


                 Reply = send | {send, NewNotif} | dont_send
                 Notif = NewNotif = notification() | trap()
                 Data = term()

              Handle  a notification to be sent. The filter can either accept the notification as
              is, return send, modify the notification, return {send, NewNotif} or  suppress  the
              notification, return dont_send.

              Data is supplied at filter registration time, see register_notification_filter.