%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%
-module(snmpm_misc_sup).
-include("snmp_debug.hrl").
-behaviour(supervisor).
%% External exports
-export([
start_link/0,
start_net_if/2, stop_net_if/0,
start_note_store/2, stop_note_store/0
]).
%% Internal exports
-export([init/1]).
-define(SUP, ?MODULE).
%%%-----------------------------------------------------------------
%%% This is a supervisor for the mib and net_ifprocesses.
%%% Each agent has one mib process.
%%%-----------------------------------------------------------------
start_link() ->
?d("start_link -> entry", []),
SupName = {local,?SUP},
supervisor:start_link(SupName, ?MODULE, []).
start_net_if(Mod, NoteStore) ->
?d("start_net_if -> entry with"
"~n Mod: ~p"
"~n NoteStore: ~p", [Mod, NoteStore]),
SupName = ?SUP,
Name = net_if,
Args = [self(), NoteStore],
start_sup_child(SupName, Name, Mod, Args).
stop_net_if() ->
stop_sup_child(?SUP, net_if).
%% The note store is a common code component, so we must
%% pass all the arguments in a way that works both for
%% the agent and the manager entities. I.e. as arguments
%% to the start_link function.
start_note_store(Prio, Opts) ->
?d("start_note_store -> entry with"
"~n Prio: ~p"
"~n Opts: ~p", [Prio, Opts]),
SupName = ?MODULE,
Name = note_store,
Mod = snmp_note_store,
Args = [Prio, snmpm, Opts],
start_sup_child(SupName, Name, Mod, Args).
stop_note_store() ->
stop_sup_child(?SUP, note_store).
%% ---------------------------------------------------------------
start_sup_child(SupName, Name, Mod, Args) ->
%% make sure we start from scratch...
Children = supervisor:which_children(SupName),
case lists:keysearch(Name, 1, Children) of
{value, {_, _Pid, _, _}} ->
stop_sup_child(SupName, Name);
_ ->
ok
end,
Spec = {Name,
{Mod, start_link, Args},
temporary, 2000, worker, [Mod]},
supervisor:start_child(SupName, Spec).
stop_sup_child(SupName, Name) ->
case whereis(SupName) of
undefined ->
ok;
_ ->
supervisor:terminate_child(SupName, Name),
supervisor:delete_child(SupName, Name)
end.
init([]) ->
?d("init -> entry", []),
SupFlags = {one_for_all, 0, 3600},
{ok, {SupFlags, []}}.
