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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/snmp/src/manager/snmpm_misc_sup.erl
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The R13B03 release.OTP_R13B03
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+%%
+%% %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, []}}.
+