# snmpa_notification_filter

### MODULE

snmpa_notification_filter

### MODULE SUMMARY

Behaviour module for the SNMP agent notification filters.

### DESCRIPTION

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 missbehaving filter will be removed.

### EXPORTS

`handle_notification(Notif, Data) -> Reply`

Types:

`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.

### AUTHORS

Micael Karlberg - support@erlang.ericsson.se

snmp 4.7.4
Copyright © 1991-2006 Ericsson AB