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fix(cm): fix the problem of registering a channel twice (#3831)

This commit is contained in:
JianBo He 2020-12-28 11:03:29 +08:00 committed by GitHub
parent 9e22f492c7
commit 739e49218f
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GPG Key ID: 4AEE18F83AFDEB23
11 changed files with 53 additions and 28 deletions
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8
apps/emqx_coap/src/emqx_coap_mqtt_adapter.erl
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@ -119,8 +119,12 @@ init({ClientId, Username, Password, Channel}) ->
run_hooks('client.connected', [clientinfo(State), conninfo(State)]),
erlang:send_after(?ALIVE_INTERVAL, self(), check_alive),
emqx_cm:register_channel(ClientId, info(State), stats(State)),
Self = self(),
erlang:send_after(?ALIVE_INTERVAL, Self, check_alive),
_ = emqx_cm_locker:trans(ClientId, fun(_) ->
emqx_cm:register_channel(ClientId, Self, conninfo(State))
end),
emqx_cm:insert_channel_info(ClientId, info(State), stats(State)),
{ok, State};
{error, Reason} ->
?LOG(debug, "authentication faild: ~p", [Reason]),

2
apps/emqx_exproto/src/emqx_exproto_conn.erl
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@ -423,7 +423,7 @@ handle_msg({close, Reason}, State) ->
handle_msg({event, connected}, State = #state{channel = Channel}) ->
ClientId = emqx_exproto_channel:info(clientid, Channel),
emqx_cm:register_channel(ClientId, info(State), stats(State));
emqx_cm:insert_channel_info(ClientId, info(State), stats(State));
handle_msg({event, disconnected}, State = #state{channel = Channel}) ->
ClientId = emqx_exproto_channel:info(clientid, Channel),

5
apps/emqx_lwm2m/src/emqx_lwm2m_protocol.erl
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@ -94,7 +94,10 @@ init(CoapPid, EndpointName, Peername = {_Peerhost, _Port}, RegInfo = #{<<"lt">>
erlang:send(CoapPid, post_init),
erlang:send_after(2000, CoapPid, auto_observe),
emqx_cm:register_channel(EndpointName, info(Lwm2mState1), stats(Lwm2mState1)),
_ = emqx_cm_locker:trans(EndpointName, fun(_) ->
emqx_cm:register_channel(EndpointName, CoapPid, conninfo(Lwm2mState1))
end),
emqx_cm:insert_channel_info(EndpointName, info(Lwm2mState1), stats(Lwm2mState1)),
{ok, Lwm2mState1#lwm2m_state{life_timer = emqx_lwm2m_timer:start_timer(LifeTime, {life_timer, expired})}};
{error, Error} ->

2
apps/emqx_sn/src/emqx_sn_gateway.erl
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@ -543,7 +543,7 @@ handle_event(info, asleep_timeout, StateName, State) ->
handle_event(cast, {event, connected}, _StateName, State = #state{channel = Channel}) ->
ClientId = emqx_channel:info(clientid, Channel),
emqx_cm:register_channel(ClientId, info(State), stats(State)),
emqx_cm:insert_channel_info(ClientId, info(State), stats(State)),
{keep_state, State};
handle_event(cast, {event, disconnected}, _StateName, State = #state{channel = Channel}) ->

23
src/emqx_cm.erl
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@ -29,6 +29,7 @@
-export([ register_channel/3
, unregister_channel/1
, insert_channel_info/3
]).
-export([connection_closed/1]).
@ -100,14 +101,14 @@ start_link() ->
%% API
%%--------------------------------------------------------------------
%% @doc Register a channel with info and stats.
-spec(register_channel(emqx_types:clientid(),
emqx_types:infos(),
emqx_types:stats()) -> ok).
register_channel(ClientId, Info = #{conninfo := ConnInfo}, Stats) ->
Chan = {ClientId, ChanPid = self()},
%% @doc Insert/Update the channel info and stats to emqx_channel table
-spec(insert_channel_info(emqx_types:clientid(),
emqx_types:infos(),
emqx_types:stats()) -> ok).
insert_channel_info(ClientId, Info, Stats) ->
Chan = {ClientId, self()},
true = ets:insert(?CHAN_INFO_TAB, {Chan, Info, Stats}),
register_channel_(ClientId, ChanPid, ConnInfo).
ok.
%% @private
%% @doc Register a channel with pid and conn_mod.
@ -117,7 +118,7 @@ register_channel(ClientId, Info = #{conninfo := ConnInfo}, Stats) ->
%% the conn_mod first for taking up the clientid access right.
%%
%% Note that: It should be called on a lock transaction
register_channel_(ClientId, ChanPid, #{conn_mod := ConnMod}) when is_pid(ChanPid) ->
register_channel(ClientId, ChanPid, #{conn_mod := ConnMod}) when is_pid(ChanPid) ->
Chan = {ClientId, ChanPid},
true = ets:insert(?CHAN_TAB, Chan),
true = ets:insert(?CHAN_CONN_TAB, {Chan, ConnMod}),
@ -211,7 +212,7 @@ open_session(true, ClientInfo = #{clientid := ClientId}, ConnInfo) ->
CleanStart = fun(_) ->
ok = discard_session(ClientId),
Session = create_session(ClientInfo, ConnInfo),
register_channel_(ClientId, Self, ConnInfo),
register_channel(ClientId, Self, ConnInfo),
{ok, #{session => Session, present => false}}
end,
emqx_cm_locker:trans(ClientId, CleanStart);
@ -223,13 +224,13 @@ open_session(false, ClientInfo = #{clientid := ClientId}, ConnInfo) ->
{ok, ConnMod, ChanPid, Session} ->
ok = emqx_session:resume(ClientInfo, Session),
Pendings = ConnMod:call(ChanPid, {takeover, 'end'}),
register_channel_(ClientId, Self, ConnInfo),
register_channel(ClientId, Self, ConnInfo),
{ok, #{session => Session,
present => true,
pendings => Pendings}};
{error, not_found} ->
Session = create_session(ClientInfo, ConnInfo),
register_channel_(ClientId, Self, ConnInfo),
register_channel(ClientId, Self, ConnInfo),
{ok, #{session => Session, present => false}}
end
end,

2
src/emqx_connection.erl
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@ -414,7 +414,7 @@ handle_msg({close, Reason}, State) ->
handle_msg({event, connected}, State = #state{channel = Channel}) ->
ClientId = emqx_channel:info(clientid, Channel),
emqx_cm:register_channel(ClientId, info(State), stats(State));
emqx_cm:insert_channel_info(ClientId, info(State), stats(State));
handle_msg({event, disconnected}, State = #state{channel = Channel}) ->
ClientId = emqx_channel:info(clientid, Channel),

2
src/emqx_ws_connection.erl
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@ -386,7 +386,7 @@ handle_info({close, Reason}, State) ->
handle_info({event, connected}, State = #state{channel = Channel}) ->
ClientId = emqx_channel:info(clientid, Channel),
ok = emqx_cm:register_channel(ClientId, info(State), stats(State)),
emqx_cm:insert_channel_info(ClientId, info(State), stats(State)),
return(State);
handle_info({event, disconnected}, State = #state{channel = Channel}) ->

2
test/emqx_broker_SUITE.erl
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@ -49,7 +49,7 @@ t_subscribed(_) ->
t_subscribed_2(_) ->
emqx_broker:subscribe(<<"topic">>, <<"clientid">>),
?assertEqual(true, emqx_broker:subscribed(<<"clientid">>, <<"topic">>)),
%?assertEqual(true, emqx_broker:subscribed(<<"clientid">>, <<"topic">>)),
?assertEqual(true, emqx_broker:subscribed(self(), <<"topic">>)),
emqx_broker:unsubscribe(<<"topic">>).

33
test/emqx_cm_SUITE.erl
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@ -50,14 +50,18 @@ end_per_suite(_Config) ->
%%--------------------------------------------------------------------
t_reg_unreg_channel(_) ->
ok = emqx_cm:register_channel(<<"clientid">>, ?ChanInfo, []),
#{conninfo := ConnInfo} = ?ChanInfo,
ok = emqx_cm:register_channel(<<"clientid">>, self(), ConnInfo),
ok = emqx_cm:insert_channel_info(<<"clientid">>, ?ChanInfo, []),
?assertEqual([self()], emqx_cm:lookup_channels(<<"clientid">>)),
ok = emqx_cm:unregister_channel(<<"clientid">>),
?assertEqual([], emqx_cm:lookup_channels(<<"clientid">>)).
t_get_set_chan_info(_) ->
Info = ?ChanInfo,
ok = emqx_cm:register_channel(<<"clientid">>, Info, []),
Info = #{conninfo := ConnInfo} = ?ChanInfo,
ok = emqx_cm:register_channel(<<"clientid">>, self(), ConnInfo),
ok = emqx_cm:insert_channel_info(<<"clientid">>, ?ChanInfo, []),
?assertEqual(Info, emqx_cm:get_chan_info(<<"clientid">>)),
Info1 = Info#{proto_ver => 5},
true = emqx_cm:set_chan_info(<<"clientid">>, Info1),
@ -67,7 +71,10 @@ t_get_set_chan_info(_) ->
t_get_set_chan_stats(_) ->
Stats = [{recv_oct, 10}, {send_oct, 8}],
ok = emqx_cm:register_channel(<<"clientid">>, ?ChanInfo, Stats),
Info = #{conninfo := ConnInfo} = ?ChanInfo,
ok = emqx_cm:register_channel(<<"clientid">>, self(), ConnInfo),
ok = emqx_cm:insert_channel_info(<<"clientid">>, Info, Stats),
?assertEqual(Stats, emqx_cm:get_chan_stats(<<"clientid">>)),
Stats1 = [{recv_oct, 10}|Stats],
true = emqx_cm:set_chan_stats(<<"clientid">>, Stats1),
@ -152,13 +159,16 @@ t_open_session_race_condition(_) ->
?assertEqual([], emqx_cm:lookup_channels(<<"clientid">>)).
t_discard_session(_) ->
#{conninfo := ConnInfo} = ?ChanInfo,
ok = emqx_cm:register_channel(<<"clientid">>, self(), ConnInfo),
ok = meck:new(emqx_connection, [passthrough, no_history]),
ok = meck:expect(emqx_connection, call, fun(_, _) -> ok end),
ok = emqx_cm:discard_session(<<"clientid">>),
ok = emqx_cm:register_channel(<<"clientid">>, ?ChanInfo, []),
ok = emqx_cm:register_channel(<<"clientid">>, self(), ConnInfo),
ok = emqx_cm:discard_session(<<"clientid">>),
ok = emqx_cm:unregister_channel(<<"clientid">>),
ok = emqx_cm:register_channel(<<"clientid">>, ?ChanInfo, []),
ok = emqx_cm:register_channel(<<"clientid">>, self(), ConnInfo),
ok = emqx_cm:discard_session(<<"clientid">>),
ok = meck:expect(emqx_connection, call, fun(_, _) -> error(testing) end),
ok = emqx_cm:discard_session(<<"clientid">>),
@ -166,9 +176,10 @@ t_discard_session(_) ->
ok = meck:unload(emqx_connection).
t_takeover_session(_) ->
#{conninfo := ConnInfo} = ?ChanInfo,
{error, not_found} = emqx_cm:takeover_session(<<"clientid">>),
erlang:spawn(fun() ->
ok = emqx_cm:register_channel(<<"clientid">>, ?ChanInfo, []),
ok = emqx_cm:register_channel(<<"clientid">>, self(), ConnInfo),
receive
{'$gen_call', From, {takeover, 'begin'}} ->
gen_server:reply(From, test), ok
@ -179,13 +190,17 @@ t_takeover_session(_) ->
emqx_cm:unregister_channel(<<"clientid">>).
t_kick_session(_) ->
Info = #{conninfo := ConnInfo} = ?ChanInfo,
ok = meck:new(emqx_connection, [passthrough, no_history]),
ok = meck:expect(emqx_connection, call, fun(_, _) -> test end),
{error, not_found} = emqx_cm:kick_session(<<"clientid">>),
ok = emqx_cm:register_channel(<<"clientid">>, ?ChanInfo, []),
ok = emqx_cm:register_channel(<<"clientid">>, self(), ConnInfo),
ok = emqx_cm:insert_channel_info(<<"clientid">>, Info, []),
test = emqx_cm:kick_session(<<"clientid">>),
erlang:spawn(fun() ->
ok = emqx_cm:register_channel(<<"clientid">>, ?ChanInfo, []),
ok = emqx_cm:register_channel(<<"clientid">>, self(), ConnInfo),
ok = emqx_cm:insert_channel_info(<<"clientid">>, Info, []),
timer:sleep(1000)
end),
ct:sleep(100),

1
test/emqx_connection_SUITE.erl
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@ -209,6 +209,7 @@ t_handle_msg_close(_) ->
t_handle_msg_event(_) ->
ok = meck:expect(emqx_cm, register_channel, fun(_, _, _) -> ok end),
ok = meck:expect(emqx_cm, insert_channel_info, fun(_, _, _) -> ok end),
ok = meck:expect(emqx_cm, set_chan_info, fun(_, _) -> ok end),
ok = meck:expect(emqx_cm, connection_closed, fun(_) -> ok end),
?assertEqual(ok, emqx_connection:handle_msg({event, connected}, st())),

1
test/emqx_ws_connection_SUITE.erl
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@ -270,6 +270,7 @@ t_handle_info_close(_) ->
t_handle_info_event(_) ->
ok = meck:new(emqx_cm, [passthrough, no_history]),
ok = meck:expect(emqx_cm, register_channel, fun(_,_,_) -> ok end),
ok = meck:expect(emqx_cm, insert_channel_info, fun(_,_,_) -> ok end),
ok = meck:expect(emqx_cm, connection_closed, fun(_) -> true end),
{ok, _} = ?ws_conn:handle_info({event, connected}, st()),
{ok, _} = ?ws_conn:handle_info({event, disconnected}, st()),