emqx/src/emqttd_cm_sup.erl
2017-02-16 11:28:35 +08:00

59 lines
1.6 KiB
Erlang

%%--------------------------------------------------------------------
%% Copyright (c) 2013-2017 EMQ Enterprise, Inc. (http://emqtt.io)
%%
%% 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.
%%--------------------------------------------------------------------
%% @doc Client Manager Supervisor.
-module(emqttd_cm_sup).
-behaviour(supervisor).
-author("Feng Lee <feng@emqtt.io>").
-include("emqttd.hrl").
%% API
-export([start_link/0]).
%% Supervisor callbacks
-export([init/1]).
-define(CM, emqttd_cm).
-define(TAB, mqtt_client).
start_link() ->
supervisor:start_link({local, ?MODULE}, ?MODULE, []).
init([]) ->
%% Create client table
create_client_tab(),
%% CM Pool Sup
MFA = {?CM, start_link, [emqttd_stats:statsfun('clients/count', 'clients/max')]},
PoolSup = emqttd_pool_sup:spec([?CM, hash, erlang:system_info(schedulers), MFA]),
{ok, {{one_for_all, 10, 3600}, [PoolSup]}}.
create_client_tab() ->
case ets:info(?TAB, name) of
undefined ->
ets:new(?TAB, [ordered_set, named_table, public,
{keypos, 2}, {write_concurrency, true}]);
_ ->
ok
end.