%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2009. 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_misc_sup).
-include("snmp_debug.hrl").
-behaviour(supervisor).
%% External exports
-export([
start_link/0,
start_mib_server/4, stop_mib_server/1,
start_net_if/6, stop_net_if/1,
start_note_store/3, stop_note_store/1
]).
%% Internal exports
-export([init/1]).
-define(SERVER, ?MODULE).
%%%-----------------------------------------------------------------
%%% This is a supervisor for the mib and net_ifprocesses.
%%% Each agent has one mib process.
%%%-----------------------------------------------------------------
start_link() ->
?d("start_link -> entry", []),
supervisor:start_link({local, ?SERVER}, ?MODULE, []).
%%-----------------------------------------------------------------
%% When the agent starts, it calls this function. If there already
%% exist a mib process for the agent, this one is used. Otherwise
%% a new one is started.
%%-----------------------------------------------------------------
start_mib_server(Prio, Ref, Mibs, Opts) ->
?d("start_mib_server -> entry with"
"~n Prio: ~p"
"~n Ref: ~p"
"~n Mibs: ~p"
"~n Opts: ~p", [Prio, Ref, Mibs, Opts]),
SupName = ?SERVER,
start_mibserver(SupName, Ref, [Prio, Mibs, Opts]).
start_mibserver(SupName, Ref, Args) ->
Children = supervisor:which_children(SupName),
case lists:keysearch({mib, Ref}, 1, Children) of
{value, {_, Pid, _, _}} -> {ok, Pid};
_ ->
Mib = {{mib, Ref},
{snmpa_mib, start_link, Args},
transient, 10000, worker, [snmpa_mib]},
supervisor:start_child(SupName, Mib)
end.
stop_mib_server(Ref) ->
SupName = ?SERVER,
case whereis(SupName) of
undefined ->
ok;
_ ->
supervisor:terminate_child(SupName, {mib, Ref}),
supervisor:delete_child(SupName, {mib, Ref})
end.
start_net_if(Prio, NoteStore, Ref, Master, Mod, Opts) ->
?d("start_mib -> entry with"
"~n Prio: ~p"
"~n NoteStore: ~p"
"~n Ref: ~p"
"~n Master: ~p"
"~n Mod: ~p"
"~n Opts: ~p",
[Prio, NoteStore, Ref, Master, Mod, Opts]),
SupName = ?SERVER,
start_netif(SupName, Ref, Mod, [Prio, NoteStore, Master, Opts]).
start_netif(SupName, Ref, Mod, Args) ->
%% make sure we start from scratch...
Children = supervisor:which_children(SupName),
case lists:keysearch({net_if, Ref}, 1, Children) of
{value, {_, _Pid, _, _}} ->
stop_net_if(Ref);
_ ->
ok
end,
NetIf = {{net_if, Ref},
{Mod, start_link, Args},
permanent, 2000, worker, [Mod]},
supervisor:start_child(SupName, NetIf).
stop_net_if(Ref) ->
SupName = ?SERVER,
case whereis(SupName) of
undefined ->
ok;
_ ->
supervisor:terminate_child(SupName, {net_if, Ref}),
supervisor:delete_child(SupName, {net_if, Ref})
end.
start_note_store(Prio, Ref, Opts) ->
?d("start_note_store -> entry with"
"~n Prio: ~p"
"~n Ref: ~p"
"~n Opts: ~p", [Prio, Ref, Opts]),
SupName = ?SERVER,
start_notestore(SupName, Ref, [Prio, snmpa, Opts]).
start_notestore(SupName, Ref, Args) ->
%% make sure we start from scratch...
Children = supervisor:which_children(SupName),
case lists:keysearch({note_store, Ref}, 1, Children) of
{value, {_, _Pid, _, _}} ->
stop_note_store(Ref);
_ ->
ok
end,
Mod = snmp_note_store,
Note = {{note_store, Ref},
{Mod, start_link, Args},
permanent, 2000, worker, [Mod]},
supervisor:start_child(SupName, Note).
stop_note_store(Ref) ->
SupName = ?SERVER,
case whereis(SupName) of
undefined ->
ok;
_ ->
supervisor:terminate_child(SupName, {note_store, Ref}),
supervisor:delete_child(SupName, {note_store, Ref})
end.
init([]) ->
SupFlags = {one_for_all, 0, 3600},
{ok, {SupFlags, []}}.
