emqttd_sm_sup
This commit is contained in:
Feng Lee
parent
aa703dea36
commit
e911025811
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@ -71,7 +71,7 @@ start_servers(Sup) ->
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{"emqttd trace", emqttd_trace},
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{"emqttd pooler", {supervisor, emqttd_pooler_sup}},
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{"emqttd client manager", {supervisor, emqttd_cm_sup}},
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{"emqttd session manager", emqttd_sm},
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{"emqttd session manager", {supervisor, emqttd_sm_sup}},
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{"emqttd session supervisor", {supervisor, emqttd_session_sup}},
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{"emqttd pubsub", {supervisor, emqttd_pubsub_sup}},
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{"emqttd stats", emqttd_stats},
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@ -44,10 +44,8 @@
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-behaviour(gen_server).
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-define(SERVER, ?MODULE).
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%% API Function Exports
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-export([start_link/0]).
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-export([start_link/3]).
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-export([lookup_session/1, start_session/2, destroy_session/1]).
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@ -55,16 +53,19 @@
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-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
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terminate/2, code_change/3]).
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-record(state, {tabid, statsfun}).
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-record(state, {id, tabid, statsfun}).
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-define(SESSION_TAB, mqtt_session).
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-define(POOL, sm_pool).
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%%%=============================================================================
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%%% API
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%%%=============================================================================
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-spec start_link() -> {ok, pid()} | ignore | {error, any()}.
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start_link() ->
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gen_server:start_link({local, ?SERVER}, ?MODULE, [], []).
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-spec start_link(Id, TabId, StatsFun) -> {ok, pid()} | ignore | {error, any()} when
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Id :: pos_integer(),
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TabId :: ets:tid(),
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StatsFun :: fun().
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start_link(Id, TabId, StatsFun) ->
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gen_server:start_link(?MODULE, [Id, TabId, StatsFun], []).
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%%------------------------------------------------------------------------------
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%% @doc Lookup Session Pid
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@ -72,7 +73,7 @@ start_link() ->
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%%------------------------------------------------------------------------------
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-spec lookup_session(binary()) -> pid() | undefined.
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lookup_session(ClientId) ->
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case ets:lookup(?SESSION_TAB, ClientId) of
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case ets:lookup(emqttd_sm_sup:table(), ClientId) of
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[{_, SessPid, _}] -> SessPid;
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[] -> undefined
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end.
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@ -83,7 +84,8 @@ lookup_session(ClientId) ->
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%%------------------------------------------------------------------------------
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-spec start_session(binary(), pid()) -> {ok, pid()} | {error, any()}.
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start_session(ClientId, ClientPid) ->
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gen_server:call(?SERVER, {start_session, ClientId, ClientPid}).
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SmPid = gproc_pool:pick_worker(?POOL, ClientId),
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gen_server:call(SmPid, {start_session, ClientId, ClientPid}).
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%%------------------------------------------------------------------------------
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%% @doc Destroy a session
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@ -91,17 +93,16 @@ start_session(ClientId, ClientPid) ->
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%%------------------------------------------------------------------------------
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-spec destroy_session(binary()) -> ok.
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destroy_session(ClientId) ->
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gen_server:call(?SERVER, {destroy_session, ClientId}).
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SmPid = gproc_pool:pick_worker(?POOL, ClientId),
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gen_server:call(SmPid, {destroy_session, ClientId}).
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%%%=============================================================================
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%%% gen_server callbacks
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%%%=============================================================================
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init([]) ->
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process_flag(trap_exit, true),
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TabId = ets:new(?SESSION_TAB, [set, protected, named_table]),
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StatsFun = emqttd_stats:statsfun('sessions/count', 'sessions/max'),
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{ok, #state{tabid = TabId, statsfun = StatsFun}}.
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init([Id, TabId, StatsFun]) ->
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gproc_pool:connect_worker(?POOL, {?MODULE, Id}),
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{ok, #state{id = Id, tabid = TabId, statsfun = StatsFun}}.
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handle_call({start_session, ClientId, ClientPid}, _From, State = #state{tabid = Tab}) ->
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Reply =
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@ -145,8 +146,8 @@ handle_info({'DOWN', MRef, process, DownPid, _Reason}, State = #state{tabid = Ta
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handle_info(_Info, State) ->
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{noreply, State}.
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terminate(_Reason, _State) ->
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ok.
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terminate(_Reason, #state{id = Id}) ->
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gproc_pool:disconnect_worker(?POOL, {?MODULE, Id}), ok.
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code_change(_OldVsn, State, _Extra) ->
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{ok, State}.
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@ -155,6 +156,6 @@ code_change(_OldVsn, State, _Extra) ->
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%%% Internal functions
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%%%=============================================================================
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setstats(State = #state{statsfun = StatsFun}) ->
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StatsFun(ets:info(?SESSION_TAB, size)), State.
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setstats(State = #state{tabid = TabId, statsfun = StatsFun}) ->
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StatsFun(ets:info(TabId, size)), State.
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@ -0,0 +1,63 @@
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%%%-----------------------------------------------------------------------------
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%%% Copyright (c) 2012-2015 eMQTT.IO, All Rights Reserved.
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%%%
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%%% Permission is hereby granted, free of charge, to any person obtaining a copy
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%%% of this software and associated documentation files (the "Software"), to deal
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%%% in the Software without restriction, including without limitation the rights
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%%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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%%% copies of the Software, and to permit persons to whom the Software is
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%%% furnished to do so, subject to the following conditions:
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%%%
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%%% The above copyright notice and this permission notice shall be included in all
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%%% copies or substantial portions of the Software.
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%%%
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%%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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%%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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%%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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%%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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%%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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%%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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%%% SOFTWARE.
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%%%-----------------------------------------------------------------------------
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%%% @doc
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%%% emqttd client manager supervisor.
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%%%
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%%% @end
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%%%-----------------------------------------------------------------------------
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-module(emqttd_sm_sup).
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-author("Feng Lee <feng@emqtt.io>").
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-include("emqttd.hrl").
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%% API
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-export([start_link/0, table/0]).
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-behaviour(supervisor).
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%% Supervisor callbacks
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-export([init/1]).
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-define(SESSION_TAB, mqtt_session).
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start_link() ->
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supervisor:start_link({local, ?MODULE}, ?MODULE, []).
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table() -> ?SESSION_TAB.
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init([]) ->
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TabId = ets:new(?SESSION_TAB, [set, named_table, public,
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{write_concurrency, true}]),
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Schedulers = erlang:system_info(schedulers),
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gproc_pool:new(sm_pool, hash, [{size, Schedulers}]),
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StatsFun = emqttd_stats:statsfun('sessions/count', 'sessions/max'),
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Children = lists:map(
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fun(I) ->
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Name = {emqttd_sm, I},
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gproc_pool:add_worker(sm_pool, Name, I),
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{Name, {emqttd_sm, start_link, [I, TabId, StatsFun]},
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permanent, 10000, worker, [emqttd_sm]}
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end, lists:seq(1, Schedulers)),
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{ok, {{one_for_all, 10, 100}, Children}}.
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