View Source snmpa_notification_filter behaviour (snmp v5.18)

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 notification.

A misbehaving filter will be removed.

Summary

Types

notification()
trap()

Callbacks

handle_notification(Notif, Data)

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.

Types

Link to this type

notification()

View Source (not exported) 
-type notification() :: term().
Link to this type

trap()

View Source (not exported) 
-type trap() :: term().

Callbacks

Link to this callback

handle_notification(Notif, Data)

View Source 
-callback handle_notification(Notif, Data) -> Reply
                                 when
                                     Notif :: notification() | trap(),
                                     Data :: term(),
                                     Reply :: send | {send, NewNotif} | dont_send,
                                     NewNotif :: notification() | trap().

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 snmpa:register_notification_filter/5.