%%
%% %CopyrightBegin%
%% 
%% Copyright Ericsson AB 2002-2009. All Rights Reserved.
%% 
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%% 
%% %CopyrightEnd%
%%
-module(snmpa_error).

-behaviour(snmpa_error_report).


%%%-----------------------------------------------------------------
%%% Implements different error mechanisms.
%%%-----------------------------------------------------------------
-export([user_err/2, config_err/2]).


%%-----------------------------------------------------------------
%% This function is called when there is an error in a user
%% supplied item, e.g. instrumentation function.
%%-----------------------------------------------------------------
user_err(F, A) -> 
    report_err(user_err, F, A).


%%-----------------------------------------------------------------
%% This function is called when there is a configuration error,
%% either at startup (in a conf-file) or at run-time (e.g. when 
%% information in the configuration tables are inconsistent.)
%%-----------------------------------------------------------------
config_err(F, A) ->
    report_err(config_err, F, A).


%% -----------------------------------------------------------------


report_err(Func, Format, Args) ->
    case report_module() of
	{ok, Mod} ->
	    (catch Mod:Func(Format, Args));
	_ ->
	    ok
    end.
       

    
report_module() ->
    case (catch ets:lookup(snmp_agent_table, error_report_mod)) of
	[{error_report_mod, Mod}] ->
	    {ok, Mod};
	_ ->
	    error
    end.