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rewrite pubsub, router

This commit is contained in:
Feng 2015-12-03 12:56:13 +08:00
parent db8b7c9d82
commit 80117c1e8a
11 changed files with 255 additions and 288 deletions
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6
include/emqttd.hrl
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@ -63,9 +63,9 @@
%% MQTT Subscription
%%------------------------------------------------------------------------------
-record(mqtt_subscription, {
clientid :: binary() | atom(),
topic :: binary(),
qos = 0 :: 0 | 1 | 2
subid :: binary() | atom(),
topic :: binary(),
qos = 0 :: 0 | 1 | 2
}).
-type mqtt_subscription() :: #mqtt_subscription{}.

10
rel/files/emqttd.config.development
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@ -147,10 +147,14 @@
%% Default should be scheduler numbers
%% {pool_size, 8},
%% Route aging time(second)
{shard, true},
%% Subscription: disc | ram
{subscription, ram},
{aging, 10}
%% Route shard
{route_shard, true},
%% Route aging time(seconds)
{route_aging, 10}
]},
%% Bridge

20
rel/files/emqttd.config.production
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@ -133,18 +133,20 @@
%% Max Payload Size of retained message
{max_playload_size, 65536}
]},
%% PubSub
{pubsub, [
%% default should be scheduler numbers
%% {pool_size, 8}
]},
%% Router
{router, [
%% PubSub and Router
{pubsub, [
%% Default should be scheduler numbers
%% {pool_size, 8},
%% Route aging time(second)
{aging, 5}
%% Subscription: disc | ram
{subscription, ram},
%% Route shard
{route_shard, true},
%% Route aging time(seconds)
{route_aging, 10}
]},
%% Bridge

6
src/emqttd.app.src
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@ -1,12 +1,14 @@
{application, emqttd,
[
{id, "emqttd"},
{vsn, "0.13.1"},
{vsn, "0.14.0"},
{description, "Erlang MQTT Broker"},
{modules, []},
{registered, []},
{applications, [kernel,
stdlib]},
stdlib,
gproc,
esockd]},
{mod, {emqttd_app, []}},
{env, []}
]}.

1
src/emqttd_app.erl
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@ -70,7 +70,6 @@ start_listeners() ->
start_servers(Sup) ->
Servers = [{"emqttd ctl", emqttd_ctl},
{"emqttd trace", emqttd_trace},
{"emqttd router", {supervisor, emqttd_router_sup}},
{"emqttd pubsub", {supervisor, emqttd_pubsub_sup}},
{"emqttd stats", emqttd_stats},
{"emqttd metrics", emqttd_metrics},

178
src/emqttd_pubsub.erl
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@ -43,7 +43,8 @@
%% API Exports
-export([start_link/3]).
-export([create/1, subscribe/1, subscribe/2, unsubscribe/1, publish/1]).
-export([create/1, subscribe/1, subscribe/2,
unsubscribe/1, unsubscribe/2, publish/1]).
%% Local node
-export([match/1]).
@ -52,25 +53,35 @@
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3]).
-ifdef(TEST).
-compile(export_all).
-endif.
-record(state, {pool, id}).
-define(ROUTER, emqttd_router).
-define(HELPER, emqttd_pubsub_helper).
%%%=============================================================================
%%% Mnesia callbacks
%%%=============================================================================
mnesia(boot) ->
%% topic table
%% Topic Table
ok = emqttd_mnesia:create_table(topic, [
{type, bag},
{ram_copies, [node()]},
{record_name, mqtt_topic},
{attributes, record_info(fields, mqtt_topic)}]),
%% subscription table
RamOrDisc = case env(subscription) of
disc -> disc_copies;
_ -> ram_copies
end,
%% Subscription Table
ok = emqttd_mnesia:create_table(subscription, [
{type, bag},
{ram_copies, [node()]},
{RamOrDisc, [node()]},
{record_name, mqtt_subscription},
{attributes, record_info(fields, mqtt_subscription)}]);
@ -78,6 +89,9 @@ mnesia(copy) ->
ok = emqttd_mnesia:copy_table(topic),
ok = emqttd_mnesia:copy_table(subscription).
env(Key) ->
proplists:get_value(Key, emqttd_broker:env(pubsub)).
%%%=============================================================================
%%% API
%%%=============================================================================
@ -97,42 +111,46 @@ name(Id) ->
list_to_atom("emqttd_pubsub_" ++ integer_to_list(Id)).
%%------------------------------------------------------------------------------
%% @doc Create topic. Notice That this transaction is not protected by pubsub pool
%% @doc Create Topic.
%% @end
%%------------------------------------------------------------------------------
-spec create(Topic :: binary()) -> ok | {error, Error :: any()}.
create(Topic) when is_binary(Topic) ->
case mnesia:transaction(fun add_topic/1, [#mqtt_topic{topic = Topic, node = node()}]) of
{atomic, ok} -> setstats(topics), ok;
Record = #mqtt_topic{topic = Topic, node = node()},
case mnesia:transaction(fun add_topic/1, [Record]) of
{atomic, ok} -> ok;
{aborted, Error} -> {error, Error}
end.
%%------------------------------------------------------------------------------
%% @doc Subscribe Topic
%% @doc Subscribe Topics
%% @end
%%------------------------------------------------------------------------------
-spec subscribe(Topic, Qos) -> {ok, Qos} when
Topic :: binary(),
Qos :: mqtt_qos() | mqtt_qos_name().
subscribe(Topic, Qos) ->
%%TODO:...
subscribe([{Topic, Qos}]).
-spec subscribe({Topic, Qos} | list({Topic, Qos})) ->
{ok, Qos | list(Qos)} | {error, any()} when
Topic :: binary(),
Qos :: mqtt_qos() | mqtt_qos_name().
subscribe({Topic, Qos}) when is_binary(Topic) andalso (?IS_QOS(Qos) orelse is_atom(Qos)) ->
%%TODO:...
subscribe({Topic, Qos}) ->
subscribe([{Topic, Qos}]);
subscribe(TopicTable) when is_list(TopicTable) ->
call({subscribe, {undefined, self()}, fixqos(TopicTable)}).
subscribe(TopicTable0 = [{_Topic, _Qos} | _]) ->
Self = self(),
TopicTable = [{Topic, ?QOS_I(Qos)} || {Topic, Qos} <- TopicTable0],
?ROUTER:add_routes(TopicTable, Self),
PubSub = gproc_pool:pick_worker(pubsub, Self),
SubReq = {subscribe, Self, TopicTable},
gen_server2:call(PubSub, SubReq, infinity).
-spec subscribe(ClientId, {Topic, Qos} | list({Topic, Qos})) ->
{ok, Qos | list(Qos)} | {error, any()} when
ClientId :: binary(),
Topic :: binary(),
Qos :: mqtt_qos() | mqtt_qos_name().
subscribe(ClientId, {Topic, Qos}) when is_binary(ClientId) ->
subscribe(ClientId, [{Topic, Qos}]);
subscribe(ClientId, TopicTable) when is_binary(ClientId) andalso is_list(TopicTable) ->
call({subscribe, {ClientId, self()}, fixqos(TopicTable)}).
fixqos(TopicTable) ->
[{Topic, ?QOS_I(Qos)} || {Topic, Qos} <- TopicTable].
call(Request) ->
PubSub = gproc_pool:pick_worker(pubsub, self()),
gen_server2:call(PubSub, Request, infinity).
%%------------------------------------------------------------------------------
%% @doc Unsubscribe Topic or Topics
@ -141,12 +159,18 @@ subscribe(TopicTable0 = [{_Topic, _Qos} | _]) ->
-spec unsubscribe(binary() | list(binary())) -> ok.
unsubscribe(Topic) when is_binary(Topic) ->
unsubscribe([Topic]);
unsubscribe(Topics = [Topic|_]) when is_binary(Topic) ->
Self = self(),
?ROUTER:delete_routes(Topics, Self),
PubSub = gproc_pool:pick_worker(pubsub, Self),
gen_server2:cast(PubSub, {unsubscribe, Self, Topics}).
cast({unsubscribe, {undefined, self()}, Topics}).
-spec unsubscribe(binary(), binary() | list(binary())) -> ok.
unsubscribe(ClientId, Topic) when is_binary(ClientId) andalso is_binary(Topic) ->
unsubscribe(ClientId, [Topic]);
unsubscribe(ClientId, Topics = [Topic|_]) when is_binary(Topic) ->
cast({unsubscribe, {ClientId, self()}, Topics}).
cast(Msg) ->
PubSub = gproc_pool:pick_worker(pubsub, self()),
gen_server2:cast(PubSub, Msg).
%%------------------------------------------------------------------------------
%% @doc Publish to cluster nodes
@ -169,10 +193,13 @@ publish(Msg = #mqtt_message{from = From}) ->
publish(Topic, Msg) when is_binary(Topic) ->
lists:foreach(fun(#mqtt_topic{topic=Name, node=Node}) ->
rpc:cast(Node, ?ROUTER, route, [Name, Msg])
end, match(Topic)).
rpc:cast(Node, ?ROUTER, route, [Name, Msg])
end, match(Topic)).
%%TODO: Benchmark and refactor...
%%------------------------------------------------------------------------------
%% @doc Match Topic Name with Topic Filters
%% @end
%%------------------------------------------------------------------------------
-spec match(Topic :: binary()) -> [mqtt_topic()].
match(Topic) when is_binary(Topic) ->
MatchedTopics = mnesia:async_dirty(fun emqttd_trie:match/1, [Topic]),
@ -182,16 +209,29 @@ match(Topic) when is_binary(Topic) ->
%%% gen_server callbacks
%%%=============================================================================
init([Pool, Id, _Opts]) ->
init([Pool, Id, Opts]) ->
?ROUTER:init(Opts),
?GPROC_POOL(join, Pool, Id),
process_flag(priority, high),
{ok, #state{pool = Pool, id = Id}}.
%%TODO: clientId???
handle_call({subscribe, _SubPid, TopicTable}, _From, State) ->
Records = [#mqtt_topic{topic = Topic, node = node()} || {Topic, _Qos} <- TopicTable],
case mnesia:transaction(fun() -> [add_topic(Record) || Record <- Records] end) of
{atomic, _Result} ->
{reply, {ok, [Qos || {_Topic, Qos} <- TopicTable]}, setstats(State)};
handle_call({subscribe, {SubId, SubPid}, TopicTable}, _From, State) ->
%% Clean aging topics
?HELPER:clean([Topic || {Topic, _Qos} <- TopicTable]),
%% Add routes first
?ROUTER:add_routes(TopicTable, SubPid),
%% Add topics
Node = node(),
TRecords = [#mqtt_topic{topic = Topic, node = Node} || {Topic, _Qos} <- TopicTable],
%% Add subscriptions
case mnesia:transaction(fun add_topics/1, [TRecords]) of
{atomic, _} ->
%% store subscription
%% mnesia:async_dirty(fun add_subscriptions/2, [SubId, TopicTable]),
{reply, {ok, [Qos || {_Topic, Qos} <- TopicTable]}, State};
{aborted, Error} ->
{reply, {error, Error}, State}
end;
@ -200,20 +240,29 @@ handle_call(Req, _From, State) ->
lager:error("Bad Request: ~p", [Req]),
{reply, {error, badreq}, State}.
%%TODO: clientId???
handle_cast({unsubscribe, SubPid, Topics}, State) when is_list(Topics) ->
handle_cast({unsubscribe, {SubId, SubPid}, Topics}, State) ->
%% Delete routes first
?ROUTER:delete_routes(Topics, SubPid),
%% Remove subscriptions
mnesia:async_dirty(fun remove_subscriptions/2, [SubId, Topics]),
{noreply, State};
handle_cast(Msg, State) ->
lager:error("Bad Msg: ~p", [Msg]),
{noreply, State}.
handle_info({'DOWN', _Mon, _Type, DownPid, _Info}, State) ->
?ROUTER:delete_routes(DownPid),
{noreply, State, hibernate};
handle_info(Info, State) ->
lager:error("Unexpected Info: ~p", [Info]),
{noreply, State}.
terminate(_Reason, #state{pool = Pool, id = Id}) ->
?GPROC_POOL(leave, Pool, Id), setstats(all).
?GPROC_POOL(leave, Pool, Id).
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
@ -222,6 +271,9 @@ code_change(_OldVsn, State, _Extra) ->
%%% Internal functions
%%%=============================================================================
add_topics(Records) ->
lists:foreach(fun add_topic/1, Records).
add_topic(TopicR = #mqtt_topic{topic = Topic}) ->
case mnesia:wread({topic, Topic}) of
[] ->
@ -234,35 +286,33 @@ add_topic(TopicR = #mqtt_topic{topic = Topic}) ->
end
end.
try_remove_topic(TopicR = #mqtt_topic{topic = Topic}) ->
case mnesia:read({subscriber, Topic}) of
[] ->
mnesia:delete_object(topic, TopicR, write),
case mnesia:read(topic, Topic) of
[] -> emqttd_trie:delete(Topic);
_ -> ok
end;
_ ->
ok
end.
add_subscriptions(undefined, _TopicTable) ->
ok;
add_subscriptions(SubId, TopicTable) ->
lists:foreach(fun({Topic, Qos}) ->
%%TODO: this is not right...
Subscription = #mqtt_subscription{subid = SubId, topic = Topic, qos = Qos},
mnesia:write(subscription, Subscription, write)
end,TopicTable).
remove_subscriptions(undefined, _Topics) ->
ok;
remove_subscriptions(SubId, Topics) ->
lists:foreach(fun(Topic) ->
Pattern = #mqtt_subscription{subid = SubId, topic = Topic, qos = '_'},
[mnesia:delete_object(subscription, Subscription, write)
|| Subscription <- mnesia:match_object(subscription, Pattern, write)]
end, Topics).
%%%=============================================================================
%%% Stats functions
%%%=============================================================================
setstats(State) ->
emqttd_stats:setstats('topics/count', 'topics/max',
mnesia:table_info(topic, size)), State.
%%%=============================================================================
%%% Trace functions
%%% Trace Functions
%%%=============================================================================
trace(publish, From, _Msg) when is_atom(From) ->
%%dont' trace broker publish
%% Dont' trace broker publish
ignore;
trace(publish, From, #mqtt_message{topic = Topic, payload = Payload}) ->
lager:info([{client, From}, {topic, Topic}],
"~s PUBLISH to ~s: ~p", [From, Topic, Payload]).
"~s PUBLISH to ~s: ~p", [From, Topic, Payload]).

44
src/emqttd_pubsub_helper.erl
View File

@ -33,7 +33,7 @@
-define(SERVER, ?MODULE).
%% API Function Exports
-export([start_link/0]).
-export([start_link/1, clean/1, setstats/1]).
%% ------------------------------------------------------------------
%% gen_server Function Exports
@ -50,15 +50,30 @@
%% API Function Definitions
%% ------------------------------------------------------------------
start_link() ->
gen_server:start_link({local, ?SERVER}, ?MODULE, [], []).
start_link(Opts) ->
gen_server:start_link({local, ?SERVER}, ?MODULE, [Opts], []).
clean(Topics) ->
ok.
setstats(topic) ->
Size = mnesia:table_info(topic, size),
emqttd_stats:setstats('topics/count', 'topics/max', Size);
setstats(subscription) ->
ok.
%% ------------------------------------------------------------------
%% gen_server Function Definitions
%% ------------------------------------------------------------------
init(Args) ->
{ok, Args}.
init([Opts]) ->
%% Aging Timer
AgingSecs = proplists:get_value(aging, Opts, 5),
{ok, TRef} = timer:send_interval(timer:seconds(AgingSecs), aging),
{ok, #state{aging = #aging{topics = [], timer = TRef}}}.
handle_call(_Request, _From, State) ->
{reply, ok, State}.
@ -69,7 +84,8 @@ handle_cast(_Msg, State) ->
handle_info(_Info, State) ->
{noreply, State}.
terminate(_Reason, _State) ->
terminate(_Reason, #state{aging = #aging{timer = TRef}}) ->
timer:cancel(TRef),
TopicR = #mqtt_topic{_ = '_', node = node()},
F = fun() ->
[mnesia:delete_object(topic, R, write) || R <- mnesia:match_object(topic, TopicR, write)]
@ -85,3 +101,19 @@ code_change(_OldVsn, State, _Extra) ->
%% Internal Function Definitions
%% ------------------------------------------------------------------
try_remove_topic(TopicR = #mqtt_topic{topic = Topic}) ->
case mnesia:read({subscriber, Topic}) of
[] ->
mnesia:delete_object(topic, TopicR, write),
case mnesia:read(topic, Topic) of
[] -> emqttd_trie:delete(Topic);
_ -> ok
end;
_ ->
ok
end.
%%%=============================================================================
%%% Stats functions
%%%=============================================================================

27
src/emqttd_pubsub_sup.erl
View File

@ -43,38 +43,17 @@ start_link() ->
supervisor:start_link({local, ?MODULE}, ?MODULE, [Opts]).
init([Opts]) ->
%% Route Table
create_route_tabs(Opts),
%% PubSub Helper
Helper = {helper, {?HELPER, start_link, [Opts]},
permanent, infinity, worker, [?HELPER]},
%% PubSub Pool Sup
MFA = {emqttd_pubsub, start_link, [Opts]},
PoolSup = emqttd_pool_sup:spec(pool_sup, [
pubsub, hash, pool_size(Opts), MFA]),
%% PubSub Helper
Helper = {helper, {?HELPER, start_link, [Opts]},
permanent, infinity, worker, [?HELPER]},
{ok, {{one_for_all, 10, 60}, [Helper, PoolSup]}}.
pool_size(Opts) ->
Schedulers = erlang:system_info(schedulers),
proplists:get_value(pool_size, Opts, Schedulers).
create_route_tabs(_Opts) ->
TabOpts = [bag, public, named_table,
{write_concurrency, true}],
%% Route Table: Topic -> {Pid, QoS}
%% Route Shard: {Topic, Shard} -> {Pid, QoS}
ensure_tab(route, TabOpts),
%% Reverse Route Table: Pid -> {Topic, QoS}
ensure_tab(reverse_route, TabOpts).
ensure_tab(Tab, Opts) ->
case ets:info(Tab, name) of
undefined ->
ets:new(Tab, Opts);
_ ->
ok
end.

181
src/emqttd_router.erl
View File

@ -36,64 +36,85 @@
%%%-----------------------------------------------------------------------------
-module(emqttd_router).
-behaviour(gen_server2).
-include("emqttd.hrl").
-include("emqttd_protocol.hrl").
-export([start_link/2, add_routes/1, add_routes/2, route/2,
-export([init/1, lookup/1, route/2, add_routes/2,
delete_routes/1, delete_routes/2]).
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3]).
%%TODO: test...
-compile(export_all).
%%%=============================================================================
%%% API Function Definitions
%%%=============================================================================
%%------------------------------------------------------------------------------
%% @doc Start router.
%% @doc Create route tables.
%% @end
%%------------------------------------------------------------------------------
start_link(Id, Opts) ->
gen_server2:start_link(?MODULE, [Id, Opts], []).
init(_Opts) ->
TabOpts = [bag, public, named_table,
{write_concurrency, true}],
%% Route Table: Topic -> {Pid, QoS}
%% Route Shard: {Topic, Shard} -> {Pid, QoS}
ensure_tab(route, TabOpts),
%% Reverse Route Table: Pid -> {Topic, QoS}
ensure_tab(reverse_route, TabOpts).
ensure_tab(Tab, Opts) ->
case ets:info(Tab, name) of
undefined ->
ets:new(Tab, Opts);
_ ->
ok
end.
%%------------------------------------------------------------------------------
%% @doc Add Routes.
%% @end
%%------------------------------------------------------------------------------
-spec add_routes(list({binary(), mqtt_qos()})) -> ok.
add_routes(TopicTable) ->
add_routes(TopicTable, self()).
-spec add_routes(list({binary(), mqtt_qos()}), pid()) -> ok.
add_routes(TopicTable, Pid) ->
Router = gproc_pool:pick_worker(router, Pid),
gen_server2:cast(Router, {add_routes, TopicTable, Pid}).
add_routes(TopicTable, Pid) when is_pid(Pid) ->
case lookup(Pid) of
[] ->
erlang:monitor(process, Pid),
insert_routes(TopicTable, Pid);
TopicInEts ->
{NewTopics, UpdatedTopics} = diff(TopicTable, TopicInEts),
update_routes(UpdatedTopics, Pid),
insert_routes(NewTopics, Pid)
end.
%%------------------------------------------------------------------------------
%% @doc Lookup topics that a pid subscribed.
%% @doc Lookup Routes
%% @end
%%------------------------------------------------------------------------------
-spec lookup(pid()) -> list({binary(), mqtt_qos()}).
lookup(Pid) when is_pid(Pid) ->
[{Topic, Qos} || {_, Topic, Qos} <- ets:lookup(reverse_route, Pid)].
%%------------------------------------------------------------------------------
%% @doc Delete Routes.
%% @end
%%------------------------------------------------------------------------------
-spec delete_routes(list(binary()), pid()) -> ok.
delete_routes(Topics, Pid) ->
Routes = [{Topic, Pid} || Topic <- Topics],
lists:foreach(fun delete_route/1, Routes).
-spec delete_routes(pid()) -> ok.
delete_routes(Pid) when is_pid(Pid) ->
Routes = [{Topic, Pid} || {Topic, _Qos} <- lookup(Pid)],
ets:delete(reverse_route, Pid),
lists:foreach(fun delete_route_only/1, Routes).
%%------------------------------------------------------------------------------
%% @doc Route Message on Local Node.
%% @end
%%------------------------------------------------------------------------------
-spec route(Topic :: binary(), Msg :: mqtt_message()) -> non_neg_integer().
-spec route(binary(), mqtt_message()) -> non_neg_integer().
route(Queue = <<"$Q/", _Q>>, Msg) ->
case ets:lookup(route, Queue) of
[] ->
setstats(dropped, true);
Routes ->
Idx = random:uniform(length(Routes)),
Idx = crypto:rand_uniform(1, length(Routes) + 1),
{_, SubPid, SubQos} = lists:nth(Idx, Routes),
SubPid ! {dispatch, tune_qos(SubQos, Msg)}
end;
@ -111,86 +132,6 @@ tune_qos(SubQos, Msg = #mqtt_message{qos = PubQos}) when PubQos > SubQos ->
tune_qos(_SubQos, Msg) ->
Msg.
%%------------------------------------------------------------------------------
%% @doc Delete Routes.
%% @end
%%------------------------------------------------------------------------------
-spec delete_routes(list(binary())) -> ok.
delete_routes(Topics) ->
delete_routes(Topics, self()).
-spec delete_routes(list(binary()), pid()) -> ok.
delete_routes(Topics, Pid) ->
Router = gproc_pool:pick_worker(router, Pid),
gen_server2:cast(Router, {delete_routes, Topics, Pid}).
%%%=============================================================================
%%% gen_server Function Definitions
%%%=============================================================================
init([Id, Opts]) ->
%% Only ETS Operations
process_flag(priority, high),
%% Aging Timer
AgingSecs = proplists:get_value(aging, Opts, 5),
{ok, TRef} = timer:send_interval(timer:seconds(AgingSecs), aging),
gproc_pool:connect_worker(router, {?MODULE, Id}),
{ok, #state{aging = #aging{topics = [], timer = TRef}}}.
handle_call(Req, _From, State) ->
lager:error("Unexpected Request: ~p", [Req]),
{reply, {error, unsupported_req}, State}.
handle_cast({add_routes, TopicTable, Pid}, State) ->
case lookup(Pid) of
[] ->
erlang:monitor(process, Pid),
ets_add_routes(TopicTable, Pid);
TopicInEts ->
{NewTopics, UpdatedTopics} = diff(TopicTable, TopicInEts),
ets_update_routes(UpdatedTopics, Pid),
ets_add_routes(NewTopics, Pid)
end,
{noreply, State};
handle_cast({delete, Topics, Pid}, State) ->
Routes = [{Topic, Pid} || Topic <- Topics],
lists:foreach(fun ets_delete_route/1, Routes),
%% TODO: aging route......
{noreply, State};
handle_cast(_Msg, State) ->
{noreply, State}.
handle_info({'DOWN', _Mon, _Type, DownPid, _Info}, State) ->
Topics = [Topic || {Topic, _Qos} <- lookup(DownPid)],
ets:delete(reverse_route, DownPid),
lists:foreach(fun(Topic) ->
ets:match_delete(route, {Topic, DownPid, '_'})
end, Topics),
%% TODO: aging route......
{noreply, State};
handle_info(aging, State = #state{aging = #aging{topics = Topics}}) ->
%%TODO.. aging
%%io:format("Aging Topics: ~p~n", [Topics]),
{noreply, State};
handle_info(_Info, State) ->
{noreply, State}.
terminate(_Reason, #state{id = Id, aging = #aging{timer = TRef}}) ->
timer:cancel(TRef),
gproc_pool:connect_worker(route, {?MODULE, Id}),
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
%%%=============================================================================
%%% Internal Functions
%%%=============================================================================
@ -211,39 +152,41 @@ diff([{Topic, Qos}|TopicTable], TopicInEts, NewAcc, UpAcc) ->
diff(TopicTable, TopicInEts, [{Topic, Qos}|NewAcc], UpAcc)
end.
ets_add_routes([], _Pid) ->
insert_routes([], _Pid) ->
ok;
ets_add_routes(TopicTable, Pid) ->
insert_routes(TopicTable, Pid) ->
{Routes, ReverseRoutes} = routes(TopicTable, Pid),
ets:insert(route, Routes),
ets:insert(reverse_route, ReverseRoutes).
ets_update_routes([], _Pid) ->
update_routes([], _Pid) ->
ok;
ets_update_routes(TopicTable, Pid) ->
update_routes(TopicTable, Pid) ->
{Routes, ReverseRoutes} = routes(TopicTable, Pid),
lists:foreach(fun ets_update_route/1, Routes),
lists:foreach(fun ets_update_reverse_route/1, ReverseRoutes).
lists:foreach(fun update_route/1, Routes),
lists:foreach(fun update_reverse_route/1, ReverseRoutes).
ets_update_route(Route = {Topic, Pid, _Qos}) ->
update_route(Route = {Topic, Pid, _Qos}) ->
ets:match_delete(route, {Topic, Pid, '_'}),
ets:insert(route, Route).
ets_update_reverse_route(RevRoute = {Pid, Topic, _Qos}) ->
update_reverse_route(RevRoute = {Pid, Topic, _Qos}) ->
ets:match_delete(reverse_route, {Pid, Topic, '_'}),
ets:insert(reverse_route, RevRoute).
ets_delete_route({Topic, Pid}) ->
ets:match_delete(reverse_route, {Pid, Topic, '_'}),
ets:match_delete(route, {Topic, Pid, '_'}).
routes(TopicTable, Pid) ->
F = fun(Topic, Qos) -> {{Topic, Pid, Qos}, {Pid, Topic, Qos}} end,
lists:unzip([F(Topic, Qos) || {Topic, Qos} <- TopicTable]).
delete_route({Topic, Pid}) ->
ets:match_delete(reverse_route, {Pid, Topic, '_'}),
ets:match_delete(route, {Topic, Pid, '_'}).
delete_route_only({Topic, Pid}) ->
ets:match_delete(route, {Topic, Pid, '_'}).
setstats(dropped, false) ->
ignore;
setstats(dropped, true) ->
emqttd_metrics:inc('messages/dropped').

46
src/emqttd_router_sup.erl
View File

@ -1,46 +0,0 @@
%%%-----------------------------------------------------------------------------
%%% Copyright (c) 2012-2015 eMQTT.IO, All Rights Reserved.
%%%
%%% Permission is hereby granted, free of charge, to any person obtaining a copy
%%% of this software and associated documentation files (the "Software"), to deal
%%% in the Software without restriction, including without limitation the rights
%%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
%%% copies of the Software, and to permit persons to whom the Software is
%%% furnished to do so, subject to the following conditions:
%%%
%%% The above copyright notice and this permission notice shall be included in all
%%% copies or substantial portions of the Software.
%%%
%%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
%%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
%%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
%%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
%%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
%%% SOFTWARE.
%%%-----------------------------------------------------------------------------
%%% @doc Router Supervisor
%%%
%%% @author Feng Lee <feng@emqtt.io>
%%%
%%%-----------------------------------------------------------------------------
-module(emqttd_router_sup).
-behaviour(supervisor).
%% API
-export([start_link/0]).
%% Supervisor callbacks
-export([init/1]).
start_link() ->
Opts = emqttd_broker:env(router),
supervisor:start_link({local, ?MODULE}, ?MODULE, [Opts]).
init([Opts]) ->
create_route_tabs(Opts),
MFA = {emqttd_router, start_link, [Opts]},
PoolSup = emqttd_pool_sup:spec(pool_sup, [router, hash, MFA]),
{ok, {{one_for_all, 10, 3600}, [PoolSup]}}.

24
src/emqttd_sm.erl
View File

@ -28,6 +28,8 @@
-include("emqttd.hrl").
-include("emqttd_internal.hrl").
%% Mnesia Callbacks
-export([mnesia/1]).
@ -35,7 +37,7 @@
-copy_mnesia({mnesia, [copy]}).
%% API Function Exports
-export([start_link/1, pool/0]).
-export([start_link/2]).
-export([start_session/2, lookup_session/1]).
@ -50,7 +52,7 @@
%% gen_server2 priorities
-export([prioritise_call/4, prioritise_cast/3, prioritise_info/3]).
-record(state, {id}).
-record(state, {pool, id}).
-define(POOL, ?MODULE).
@ -64,7 +66,7 @@
%%%=============================================================================
mnesia(boot) ->
%% global session...
%% Global session...
ok = emqttd_mnesia:create_table(session, [
{type, ordered_set},
{ram_copies, [node()]},
@ -83,9 +85,9 @@ mnesia(copy) ->
%% @doc Start a session manager
%% @end
%%------------------------------------------------------------------------------
-spec start_link(Id :: pos_integer()) -> {ok, pid()} | ignore | {error, any()}.
start_link(Id) ->
gen_server2:start_link({local, name(Id)}, ?MODULE, [Id], []).
-spec start_link(atom(), pos_integer()) -> {ok, pid()} | ignore | {error, any()}.
start_link(Pool, Id) ->
gen_server2:start_link({local, name(Id)}, ?MODULE, [Pool, Id], []).
name(Id) ->
list_to_atom("emqttd_sm_" ++ integer_to_list(Id)).
@ -141,9 +143,9 @@ call(SM, Req) ->
%%% gen_server callbacks
%%%=============================================================================
init([Id]) ->
gproc_pool:connect_worker(?POOL, {?MODULE, Id}),
{ok, #state{id = Id}}.
init([Pool, Id]) ->
?GPROC_POOL(join, Pool, Id),
{ok, #state{pool = Pool, id = Id}}.
prioritise_call(_Msg, _From, _Len, _State) ->
1.
@ -197,8 +199,8 @@ handle_info(Info, State) ->
lager:error("Unexpected Info: ~p", [Info]),
{noreply, State}.
terminate(_Reason, #state{id = Id}) ->
gproc_pool:disconnect_worker(?POOL, {?MODULE, Id}), ok.
terminate(_Reason, #state{pool = Pool, id = Id}) ->
?GPROC_POOL(leave, Pool, Id).
code_change(_OldVsn, State, _Extra) ->
{ok, State}.