snmpa_error_report(3erl) Erlang Module Definition snmpa_error_report(3erl)NAME
snmpa_error_report - Behaviour module for reporting SNMP agent errors
DESCRIPTION
This module defines the behaviour of the agent error reporting. A snmpa_error_report compliant module must export the following functions:
* config_err/2
* user_err/2
The semantics of them and their exact signatures are explained below.
EXPORTS
config_err(Format, Args) -> void()
Types Format = string()
Args = list()
The function is called if an error occurs during the configuration phase, for example if a syntax error is found in a configuration
file.
Format and Args are as in io:format(Format, Args) .
user_err(Format, Args) -> void()
Types Format = string()
Args = list()
The function is called if a user related error occurs at run-time, for example if a user defined instrumentation function returns
erroneous.
Format and Args are as in io:format(Format, Args) .
Ericsson AB snmp 4.19 snmpa_error_report(3erl)
Check Out this Related Man Page
alarm_handler(3erl) Erlang Module Definition alarm_handler(3erl)NAME
alarm_handler - An Alarm Handling Process
DESCRIPTION
The alarm handler process is a gen_event event manager process which receives alarms in the system. This process is not intended to be a
complete alarm handler. It defines a place to which alarms can be sent. One simple event handler is installed in the alarm handler at
start-up, but users are encouraged to write and install their own handlers.
The simple event handler sends all alarms as info reports to the error logger, and saves all of them in a list which can be passed to a
user defined event handler, which may be installed at a later stage. The list can grow large if many alarms are generated. So it is a good
reason to install a better user defined handler.
There are functions to set and clear alarms. The format of alarms are defined by the user. For example, an event handler for SNMP could be
defined, together with an alarm MIB.
The alarm handler is part of the SASL application.
When writing new event handlers for the alarm handler, the following events must be handled:
{set_alarm, {AlarmId, AlarmDescr}} :
This event is generated by alarm_handler:set_alarm({AlarmId, AlarmDecsr}) .
{clear_alarm, AlarmId} :
This event is generated by alarm_handler:clear_alarm(AlarmId) .
The default simple handler is called alarm_handler and it may be exchanged by calling gen_event:swap_handler/3 as gen_event:swap_han-
dler(alarm_handler, {alarm_handler, swap}, {NewHandler, Args}) . NewHandler:init({Args, {alarm_handler, Alarms}}) is called. Refer to
gen_event(3erl) for further details.
EXPORTS
clear_alarm(AlarmId) -> void()
Types AlarmId = term()
Clears all alarms with id AlarmId .
get_alarms() -> [alarm()]
Returns a list of all active alarms. This function can only be used when the simple handler is installed.
set_alarm(alarm())
Types alarm() = {AlarmId, AlarmDescription}
AlarmId = term()
AlarmDescription = term()
Sets an alarm with id AlarmId . This id is used at a later stage when the alarm is cleared.
SEE ALSO error_logger(3erl), gen_event(3erl)Ericsson AB sasl 2.1.9.3 alarm_handler(3erl)
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