refactor(gw): move mqtt-sn to gateway

apps/emqx_gateway/etc/emqx_gateway.conf

@@ -27,4 +27,47 @@ emqx_gateway: {
             active_n: 100
         }
     }
+
+    mqttsn.1: {
+        ## The MQTT-SN Gateway ID in ADVERTISE message.
+        gateway_id: 1
+
+        ## Enable broadcast this gateway to WLAN
+        broadcast: true
+
+        ## To control whether write statistics data into ETS table
+        ## for dashbord to read.
+        enable_stats: true
+
+        ## To control whether accept and process the received
+        ## publish message with qos=-1.
+        enable_qos3: true
+
+        ## Idle timeout for a MQTT-SN channel
+        idle_timeout: 30s
+
+        ## The pre-defined topic name corresponding to the pre-defined topic
+        ## id of N.
+        ## Note that the pre-defined topic id of 0 is reserved.
+        predefined: [
+            { id: 1
+              topic: "/predefined/topic/name/hello"
+            },
+            { id: 2
+              topic: "/predefined/topic/name/nice"
+            }
+        ]
+
+        ### ClientInfo override
+        clientinfo_override: {
+            username: "mqtt_sn_user"
+            password: "abc"
+        }
+
+        listener.udp.1: {
+            bind: 1884
+            max_connections: 10240000
+            max_conn_rate: 1000
+        }
+    }
 }

apps/emqx_gateway/src/bhvrs/emqx_gateway_impl.erl

@@ -31,6 +31,7 @@
                          )
     -> {error, reason()}
      | {ok, [GwInstaPid :: pid()], GwInstaState :: state()}
+     %% TODO: v0.2 The child spec is better for restarting child process
      | {ok, [Childspec :: supervisor:child_spec()], GwInstaState :: state()}.
 
 %% @doc

apps/emqx_gateway/src/emqx_gateway_app.erl

@@ -45,7 +45,7 @@ load_default_gateway_applications() ->
 
 gateway_type_searching() ->
     %% FIXME: Hardcoded apps
-    [emqx_stomp_impl].
+    [emqx_stomp_impl, emqx_sn_impl].
 
 load(Mod) ->
     try
@@ -65,7 +65,7 @@ create_gateway_by_default([]) ->
 create_gateway_by_default([{Type, Name, Confs}|More]) ->
     case emqx_gateway_registry:lookup(Type) of
         undefined ->
-            ?LOG(error, "Skip to start ~p#~p: not_registred_type",
+            ?LOG(error, "Skip to start ~s#~s: not_registred_type",
                         [Type, Name]);
         _ ->
             case emqx_gateway:create(Type,
@@ -73,9 +73,9 @@ create_gateway_by_default([{Type, Name, Confs}|More]) ->
                                      <<>>,
                                      Confs) of
                 {ok, _} ->
-                    ?LOG(debug, "Start ~p#~p successfully!", [Type, Name]);
+                    ?LOG(debug, "Start ~s#~s successfully!", [Type, Name]);
                 {error, Reason} ->
-                    ?LOG(error, "Start ~p#~p failed: ~0p",
+                    ?LOG(error, "Start ~s#~s failed: ~0p",
                                 [Type, Name, Reason])
             end
     end,

apps/emqx_gateway/src/emqx_gateway_insta_sup.erl

@@ -54,7 +54,6 @@
 
 start_link(Insta, Ctx, GwDscrptr) ->
     gen_server:start_link(
-      {local, ?MODULE},
       ?MODULE,
       [Insta, Ctx, GwDscrptr],
       []

apps/emqx_gateway/src/emqx_gateway_metrics.erl

@@ -49,7 +49,7 @@
 %%--------------------------------------------------------------------
 
 start_link(Type) ->
-    gen_server:start_link({local, ?MODULE}, ?MODULE, [Type], []).
+    gen_server:start_link(?MODULE, [Type], []).
 
 -spec inc(gateway_type(), atom()) -> ok.
 inc(Type, Name) ->

apps/emqx_gateway/src/emqx_gateway_schema.erl

@@ -35,7 +35,9 @@
 structs() -> ["emqx_gateway"].
 
 fields("emqx_gateway") ->
-    [{stomp, t(ref(stomp))}];
+    [{stomp, t(ref(stomp))},
+     {mqttsn, t(ref(mqttsn))}
+    ];
 
 fields(stomp) ->
     [{"$id", t(ref(stomp_structs))}];
@@ -44,7 +46,7 @@ fields(stomp_structs) ->
     [ {frame, t(ref(stomp_frame))}
     , {clientinfo_override, t(ref(clientinfo_override))}
     , {authenticator, t(union([allow_anonymous]))}
-    , {listener, t(ref(listener))}
+    , {listener, t(ref(tcp_listener_group))}
     ];
 
 fields(stomp_frame) ->
@@ -53,13 +55,38 @@ fields(stomp_frame) ->
     , {max_body_length, t(integer(), undefined, 8192)}
     ];
 
+fields(mqttsn) ->
+    [{"$id", t(ref(mqttsn_structs))}];
+
+fields(mqttsn_structs) ->
+    [ {gateway_id, t(integer())}
+    , {broadcast, t(boolean())}
+    , {enable_stats, t(boolean())}
+    , {enable_qos3, t(boolean())}
+    , {idle_timeout, t(duration())}
+    , {predefined, hoconsc:array(ref(mqttsn_predefined))}
+    , {clientinfo_override, t(ref(clientinfo_override))}
+    , {listener, t(ref(udp_listener_group))}
+    ];
+
+fields(mqttsn_predefined) ->
+    %% FIXME: How to check the $id is a integer ???
+    [ {id, t(integer())}
+    , {topic, t(string())}
+    ];
+
 fields(clientinfo_override) ->
     [ {username, t(string())}
     , {password, t(string())}
     , {clientid, t(string())}
     ];
 
-fields(listener) ->
+fields(udp_listener_group) ->
+    [ {udp, t(ref(udp_listener))}
+    , {dtls, t(ref(dtls_listener))}
+    ];
+
+fields(tcp_listener_group) ->
     [ {tcp, t(ref(tcp_listener))}
     , {ssl, t(ref(ssl_listener))}
     ];
@@ -70,7 +97,14 @@ fields(tcp_listener) ->
 fields(ssl_listener) ->
     [ {"$name", t(ref(ssl_listener_settings))}];
 
+fields(udp_listener) ->
+    [ {"$name", t(ref(udp_listener_settings))}];
+
+fields(dtls_listener) ->
+    [ {"$name", t(ref(dtls_listener_settings))}];
+
 fields(listener_settings) ->
+    % FIXME:
     %[ {"bind", t(union(ip_port(), integer()))}
     [ {bind, t(integer())}
     , {acceptors, t(integer(), undefined, 8)}
@@ -107,6 +141,19 @@ fields(ssl_listener_settings) ->
                    , depth => 10
                    , reuse_sessions => true}) ++ fields(listener_settings);
 
+fields(udp_listener_settings) ->
+    [
+      %% some special confs for udp listener 
+    ] ++ fields(listener_settings);
+
+fields(dtls_listener_settings) ->
+    [
+      %% some special confs for dtls listener 
+    ] ++
+    ssl(undefined, #{handshake_timeout => "15s"
+                   , depth => 10
+                   , reuse_sessions => true}) ++ fields(listener_settings);
+
 fields(access) ->
     [ {"$id", #{type => string(),
                 nullable => true}}];

apps/emqx_gateway/src/emqx_gateway_utils.erl

@@ -25,6 +25,7 @@
         ]).
 
 -export([ apply/2
+        , format_listenon/1
         ]).
 
 -export([ normalize_rawconf/1
@@ -89,6 +90,13 @@ apply(F, A2) when is_function(F),
                   is_list(A2) ->
     erlang:apply(F, A2).
 
+format_listenon(Port) when is_integer(Port) ->
+    io_lib:format("0.0.0.0:~w", [Port]);
+format_listenon({Addr, Port}) when is_list(Addr) ->
+    io_lib:format("~s:~w", [Addr, Port]);
+format_listenon({Addr, Port}) when is_tuple(Addr) ->
+    io_lib:format("~s:~w", [inet:ntoa(Addr), Port]).
+
 -type listener() :: #{}.
 
 -type rawconf() ::

apps/emqx_gateway/src/mqttsn/README.md

@@ -1,10 +1,9 @@
-emqx-sn
+# MQTT-SN Gateway
-=======
 
 EMQ X MQTT-SN Gateway.
 
-Configure Plugin
+## Configure Plugin
-----------------
+
 
 File: etc/emqx_sn.conf
 
@@ -72,8 +71,7 @@ mqtt.sn.password = abc
 - mqtt.sn.password
   * This parameter is optional. Pair with username above.
 
-Load Plugin
+## Load Plugin
------------
 
 ```
 ./bin/emqx_ctl plugins load emqx_sn
@@ -95,23 +93,18 @@ Load Plugin
 - https://github.com/njh/mqtt-sn-tools
 - https://github.com/arobenko/mqtt-sn
 
-sleeping device
+### sleeping device
------------
 
 PINGREQ must have a ClientId which is identical to the one in CONNECT message. Without ClientId, emqx-sn will ignore such PINGREQ.
 
-pre-defined topics
+### pre-defined topics
------------
 
 The mapping of a pre-defined topic id and topic name should be known inadvance by both client's application and gateway. We define this mapping info in emqx_sn.conf file, and which shall be kept equivalent in all client's side.
 
-License
+## License
--------
 
 Apache License Version 2.0
 
-Author
+## Author
-------
-
-EMQ X-Men Team.
 
+EMQ X Team.

apps/emqx_gateway/src/mqttsn/emqx_sn_broadcast.erl

@@ -18,7 +18,7 @@
 
 -behaviour(gen_server).
 
--include("emqx_sn.hrl").
+-include("src/mqttsn/include/emqx_sn.hrl").
 
 -export([ start_link/2
         , stop/0

apps/emqx_gateway/src/mqttsn/emqx_sn_frame.erl

@@ -17,7 +17,7 @@
 
 -module(emqx_sn_frame).
 
--include("emqx_sn.hrl").
+-include("src/mqttsn/include/emqx_sn.hrl").
 
 -export([ parse/1
         , serialize/1

apps/emqx_gateway/src/mqttsn/emqx_sn_gateway.erl

@@ -18,7 +18,7 @@
 
 -behaviour(gen_statem).
 
--include("emqx_sn.hrl").
+-include("src/mqttsn/include/emqx_sn.hrl").
 -include_lib("emqx/include/emqx.hrl").
 -include_lib("emqx/include/emqx_mqtt.hrl").
 -include_lib("emqx/include/logger.hrl").
@@ -915,7 +915,8 @@ handle_unsubscribe(_, _TopicId, MsgId, State) ->
     {keep_state, send_message(?SN_UNSUBACK_MSG(MsgId), State)}.
 
 do_publish(?SN_NORMAL_TOPIC, TopicName, Data, Flags, MsgId, State) ->
-    %% XXX: Handle normal topic id as predefined topic id, to be compatible with paho mqtt-sn library
+    %% XXX: Handle normal topic id as predefined topic id, to be
+    %% compatible with paho mqtt-sn library
     <<TopicId:16>> = TopicName,
     do_publish(?SN_PREDEFINED_TOPIC, TopicId, Data, Flags, MsgId, State);
 do_publish(?SN_PREDEFINED_TOPIC, TopicId, Data, Flags, MsgId,
@@ -972,8 +973,11 @@ do_puback(TopicId, MsgId, ReturnCode, StateName,
                 undefined -> {keep_state, State};
                 TopicName ->
                     %%notice that this TopicName maybe normal or predefined,
-                    %% involving the predefined topic name in register to enhance the gateway's robustness even inconsistent with MQTT-SN channels
+                    %% involving the predefined topic name in register to
-                    {keep_state, send_register(TopicName, TopicId, MsgId, State)}
+                    %% enhance the gateway's robustness even inconsistent
+                    %% with MQTT-SN channels
+                    {keep_state, send_register(TopicName, TopicId,
+                                               MsgId, State)}
             end;
         _ ->
             ?LOG(error, "CAN NOT handle PUBACK ReturnCode=~p", [ReturnCode]),
@@ -1070,7 +1074,8 @@ handle_outgoing(Packet, State) ->
     send_message(mqtt2sn(Packet, State), State).
 
 cache_no_reg_publish_message(Pendings, TopicId, PubPkt, State) ->
-    ?LOG(debug, "cache non-registered publish message for topic-id: ~p, msg: ~0p, pendings: ~0p",
+    ?LOG(debug, "cache non-registered publish message "
+                 "for topic-id: ~p, msg: ~0p, pendings: ~0p",
                  [TopicId, PubPkt, Pendings]),
     Msgs = maps:get(pending_topic_ids, Pendings, []),
     Pendings#{TopicId => Msgs ++ [mqtt2sn(PubPkt, State)]}.

apps/emqx_gateway/src/mqttsn/emqx_sn_impl.erl

@@ -0,0 +1,161 @@
+%%--------------------------------------------------------------------
+%% Copyright (c) 2021 EMQ Technologies Co., Ltd. All Rights Reserved.
+%%
+%% 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 The MQTT-SN Gateway Implement interface
+-module(emqx_sn_impl).
+
+-behavior(emqx_gateway_impl).
+
+%% APIs
+-export([ load/0
+        , unload/0
+        ]).
+
+-export([]).
+
+-export([ init/1
+        , on_insta_create/3
+        , on_insta_update/4
+        , on_insta_destroy/3
+        ]).
+
+-define(UDP_SOCKOPTS, []).
+
+%%--------------------------------------------------------------------
+%% APIs
+%%--------------------------------------------------------------------
+
+load() ->
+    RegistryOptions = [ {cbkmod, ?MODULE}
+                      ],
+    YourOptions = [params1, params2],
+    emqx_gateway_registry:load(mqttsn, RegistryOptions, YourOptions).
+
+unload() ->
+    emqx_gateway_registry:unload(mqttsn).
+
+init(_) ->
+    GwState = #{},
+    {ok, GwState}.
+
+%%--------------------------------------------------------------------
+%% emqx_gateway_registry callbacks
+%%--------------------------------------------------------------------
+
+on_insta_create(_Insta = #{ id := InstaId,
+                            rawconf := RawConf
+                          }, Ctx, _GwState) ->
+
+    %% We Also need to start `emqx_sn_broadcast` &
+    %% `emqx_sn_registry` process
+    SnGwId = maps:get(gateway_id, RawConf),
+    case maps:get(broadcast, RawConf) of
+        false ->
+            ok;
+        true ->
+            %% FIXME:
+            Port = 1884,
+            _ = emqx_sn_broadcast:start_link(SnGwId, Port)
+    end,
+
+    PredefTopics = maps:get(predefined, RawConf),
+    {ok, RegistrySvr} = emqx_sn_registry:start_link(PredefTopics),
+
+    NRawConf = maps:without(
+                 [gateway_id, broadcast, predefined],
+                 RawConf#{registry => RegistrySvr}
+                ),
+    Listeners = emqx_gateway_utils:normalize_rawconf(NRawConf),
+
+    ListenerPids = lists:map(fun(Lis) ->
+                     start_listener(InstaId, Ctx, Lis)
+                   end, Listeners),
+    {ok, ListenerPids, _InstaState = #{ctx => Ctx}}.
+
+on_insta_update(NewInsta, OldInsta, GwInstaState = #{ctx := Ctx}, GwState) ->
+    InstaId = maps:get(id, NewInsta),
+    try
+        %% XXX: 1. How hot-upgrade the changes ???
+        %% XXX: 2. Check the New confs first before destroy old instance ???
+        on_insta_destroy(OldInsta, GwInstaState, GwState),
+        on_insta_create(NewInsta, Ctx, GwState)
+    catch
+        Class : Reason : Stk ->
+            logger:error("Failed to update stomp instance ~s; "
+                         "reason: {~0p, ~0p} stacktrace: ~0p",
+                         [InstaId, Class, Reason, Stk]),
+            {error, {Class, Reason}}
+    end.
+
+on_insta_destroy(_Insta = #{ id := InstaId,
+                             rawconf := RawConf
+                           }, _GwInstaState, _GwState) ->
+    Listeners = emqx_gateway_utils:normalize_rawconf(RawConf),
+    lists:foreach(fun(Lis) ->
+        stop_listener(InstaId, Lis)
+    end, Listeners).
+
+%%--------------------------------------------------------------------
+%% Internal funcs
+%%--------------------------------------------------------------------
+
+start_listener(InstaId, Ctx, {Type, ListenOn, SocketOpts, Cfg}) ->
+    ListenOnStr = emqx_gateway_utils:format_listenon(ListenOn),
+    case start_listener(InstaId, Ctx, Type, ListenOn, SocketOpts, Cfg) of
+        {ok, Pid} ->
+            io:format("Start mqttsn ~s:~s listener on ~s successfully.~n",
+                      [InstaId, Type, ListenOnStr]),
+            Pid;
+        {error, Reason} ->
+            io:format(standard_error,
+                      "Failed to start mqttsn ~s:~s listener on ~s: ~0p~n",
+                      [InstaId, Type, ListenOnStr, Reason]),
+            throw({badconf, Reason})
+    end.
+
+start_listener(InstaId, Ctx, Type, ListenOn, SocketOpts, Cfg) ->
+    Name = name(InstaId, Type),
+    esockd:open_udp(Name, ListenOn, merge_default(SocketOpts),
+                    {emqx_sn_gateway, start_link, [Cfg#{ctx => Ctx}]}).
+
+name(InstaId, Type) ->
+    list_to_atom(lists:concat([InstaId, ":", Type])).
+
+merge_default(Options) ->
+    case lists:keytake(udp_options, 1, Options) of
+        {value, {udp_options, TcpOpts}, Options1} ->
+            [{udp_options, emqx_misc:merge_opts(?UDP_SOCKOPTS, TcpOpts)} | Options1];
+        false ->
+            [{udp_options, ?UDP_SOCKOPTS} | Options]
+    end.
+
+stop_listener(InstaId, {Type, ListenOn, SocketOpts, Cfg}) ->
+    StopRet = stop_listener(InstaId, Type, ListenOn, SocketOpts, Cfg),
+    ListenOnStr = emqx_gateway_utils:format_listenon(ListenOn),
+    case StopRet of
+        ok -> io:format("Stop mqttsn ~s:~s listener on ~s successfully.~n",
+                        [InstaId, Type, ListenOnStr]);
+        {error, Reason} ->
+            io:format(standard_error,
+                      "Failed to stop mqttsn ~s:~s listener on ~s: ~0p~n",
+                      [InstaId, Type, ListenOnStr, Reason]
+                     )
+    end,
+    StopRet.
+
+stop_listener(InstaId, Type, ListenOn, _SocketOpts, _Cfg) ->
+    Name = name(InstaId, Type),
+    esockd:close(Name, ListenOn).

apps/emqx_gateway/src/mqttsn/emqx_sn_registry.erl

@@ -18,7 +18,7 @@
 
 -behaviour(gen_server).
 
--include("emqx_sn.hrl").
+-include("src/mqttsn/include/emqx_sn.hrl").
 
 -define(LOG(Level, Format, Args),
         emqx_logger:Level("MQTT-SN(registry): " ++ Format, Args)).
@@ -132,7 +132,7 @@ init([PredefTopics]) ->
     %% {ClientId, TopicId}   -> TopicName
     %% {ClientId, TopicName} -> TopicId
     MaxPredefId = lists:foldl(
-                    fun({TopicId, TopicName}, AccId) ->
+                    fun(#{id := TopicId, topic := TopicName}, AccId) ->
                         ekka_mnesia:dirty_write(#emqx_sn_registry{key = {predef, TopicId},
                                                                   value = TopicName}),
                         ekka_mnesia:dirty_write(#emqx_sn_registry{key = {predef, TopicName},

apps/emqx_gateway/src/mqttsn/emqx_sn_sup.erl

@@ -39,5 +39,3 @@ init([{_Ip, Port}, GwId, PredefTopics]) ->
                  type     => worker,
                  modules  => [emqx_sn_registry]},
     {ok, {{one_for_one, 10, 3600}, [Broadcast, Registry]}}.
-
-

apps/emqx_gateway/src/stomp/emqx_stomp_impl.erl

@@ -71,13 +71,12 @@ on_insta_create(_Insta = #{ id := InstaId,
     %% FIXME: Assign ctx to InstaState
     {ok, ListenerPids, _InstaState = #{ctx => Ctx}}.
 
-%% @private
+on_insta_update(NewInsta, OldInsta, GwInstaState = #{ctx := Ctx}, GwState) ->
-on_insta_update(NewInsta, OldInstace, GwInstaState = #{ctx := Ctx}, GwState) ->
     InstaId = maps:get(id, NewInsta),
     try
         %% XXX: 1. How hot-upgrade the changes ???
         %% XXX: 2. Check the New confs first before destroy old instance ???
-        on_insta_destroy(OldInstace, GwInstaState, GwState),
+        on_insta_destroy(OldInsta, GwInstaState, GwState),
         on_insta_create(NewInsta, Ctx, GwState)
     catch
         Class : Reason : Stk ->
@@ -100,15 +99,16 @@ on_insta_destroy(_Insta = #{ id := InstaId,
 %%--------------------------------------------------------------------
 
 start_listener(InstaId, Ctx, {Type, ListenOn, SocketOpts, Cfg}) ->
+    ListenOnStr = emqx_gateway_utils:format_listenon(ListenOn),
     case start_listener(InstaId, Ctx, Type, ListenOn, SocketOpts, Cfg) of
         {ok, Pid} ->
             io:format("Start stomp ~s:~s listener on ~s successfully.~n",
-                      [InstaId, Type, format(ListenOn)]),
+                      [InstaId, Type, ListenOnStr]),
             Pid;
         {error, Reason} ->
             io:format(standard_error,
                       "Failed to start stomp ~s:~s listener on ~s: ~0p~n",
-                      [InstaId, Type, format(ListenOn), Reason]),
+                      [InstaId, Type, ListenOnStr, Reason]),
             throw({badconf, Reason})
     end.
 
@@ -128,22 +128,16 @@ merge_default(Options) ->
             [{tcp_options, ?TCP_OPTS} | Options]
     end.
 
-format(Port) when is_integer(Port) ->
-    io_lib:format("0.0.0.0:~w", [Port]);
-format({Addr, Port}) when is_list(Addr) ->
-    io_lib:format("~s:~w", [Addr, Port]);
-format({Addr, Port}) when is_tuple(Addr) ->
-    io_lib:format("~s:~w", [inet:ntoa(Addr), Port]).
-
 stop_listener(InstaId, {Type, ListenOn, SocketOpts, Cfg}) ->
     StopRet = stop_listener(InstaId, Type, ListenOn, SocketOpts, Cfg),
+    ListenOnStr = emqx_gateway_utils:format_listenon(ListenOn),
     case StopRet of
         ok -> io:format("Stop stomp ~s:~s listener on ~s successfully.~n",
-                        [InstaId, Type, format(ListenOn)]);
+                        [InstaId, Type, ListenOnStr]);
         {error, Reason} ->
             io:format(standard_error,
                       "Failed to stop stomp ~s:~s listener on ~s: ~0p~n",
-                      [InstaId, Type, format(ListenOn), Reason]
+                      [InstaId, Type, ListenOnStr, Reason]
                      )
     end,
     StopRet.

apps/emqx_sn/.gitignore

@@ -1,40 +0,0 @@
-.eunit
-deps
-*.o
-*.beam
-*.plt
-erl_crash.dump
-ebin
-rel/example_project
-.concrete/DEV_MODE
-.rebar
-_rel/
-emqx_sn.d
-logs/
-.erlang.mk/
-data/
-.idea/
-*.iml
-*.d
-_build/
-.rebar3
-rebar3.crashdump
-.DS_Store
-bbmustache/
-etc/gen.emqx.conf
-cuttlefish
-rebar.lock
-xrefr
-intergration_test/emqx-rel/
-intergration_test/paho.mqtt-sn.embedded-c/
-intergration_test/client/*.exe
-intergration_test/client/*.txt
-.DS_Store
-cover/
-ct.coverdata
-eunit.coverdata
-test/ct.cover.spec
-erlang.mk
-etc/emqx_sn.conf.rendered
-.rebar3/
-*.swp

apps/emqx_sn/examples/simple_example.erl

@@ -1,126 +0,0 @@
--module(simple_example).
-
--include("emqx_sn.hrl").
-
--define(HOST, {127,0,0,1}).
--define(PORT, 1884).
-
--export([start/0]).
-
-start() ->
-    io:format("start to connect ~p:~p~n", [?HOST, ?PORT]),
-
-    %% create udp socket
-    {ok, Socket} = gen_udp:open(0, [binary]),
-
-    %% connect to emqx_sn broker
-    Packet = gen_connect_packet(<<"client1">>),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, Packet),
-    io:format("send connect packet=~p~n", [Packet]),
-    %% receive message
-    wait_response(),
-
-    %% register topic_id
-    RegisterPacket = gen_register_packet(<<"TopicA">>, 0),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, RegisterPacket),
-    io:format("send register packet=~p~n", [RegisterPacket]),
-    TopicId = wait_response(),
-
-    %% subscribe
-    SubscribePacket = gen_subscribe_packet(TopicId),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, SubscribePacket),
-    io:format("send subscribe packet=~p~n", [SubscribePacket]),
-    wait_response(),
-
-    %% publish
-    PublishPacket = gen_publish_packet(TopicId, <<"Payload...">>),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, PublishPacket),
-    io:format("send publish packet=~p~n", [PublishPacket]),
-    wait_response(),
-
-    % wait for subscribed message from broker
-    wait_response(),
-
-    %% disconnect from emqx_sn broker
-    DisConnectPacket = gen_disconnect_packet(),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, DisConnectPacket),
-    io:format("send disconnect packet=~p~n", [DisConnectPacket]).
-
-
-
-gen_connect_packet(ClientId) ->
-    Length = 6+byte_size(ClientId),
-    MsgType = ?SN_CONNECT,
-    Dup = 0,
-    QoS = 0,
-    Retain = 0,
-    Will = 0,
-    CleanSession = 1,
-    TopicIdType = 0,
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    ProtocolId = 1,
-    Duration = 10,
-    <<Length:8, MsgType:8, Flag/binary, ProtocolId:8, Duration:16, ClientId/binary>>.
-
-gen_subscribe_packet(TopicId) ->
-    Length = 7,
-    MsgType = ?SN_SUBSCRIBE,
-    Dup = 0,
-    Retain = 0,
-    Will = 0,
-    QoS = 1,
-    CleanSession = 0,
-    TopicIdType = 1,
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    MsgId = 1,
-    <<Length:8, MsgType:8, Flag/binary, MsgId:16, TopicId:16>>.
-
-gen_register_packet(Topic, TopicId) ->
-    Length = 6+byte_size(Topic),
-    MsgType = ?SN_REGISTER,
-    MsgId = 1,
-    <<Length:8, MsgType:8, TopicId:16, MsgId:16, Topic/binary>>.
-
-gen_publish_packet(TopicId, Payload) ->
-    Length = 7+byte_size(Payload),
-    MsgType = ?SN_PUBLISH,
-    Dup = 0,
-    QoS = 1,
-    Retain = 0,
-    Will = 0,
-    CleanSession = 0,
-    MsgId = 1,
-    TopicIdType = 1,
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    <<Length:8, MsgType:8, Flag/binary, TopicId:16, MsgId:16, Payload/binary>>.
-
-gen_disconnect_packet()->
-    Length = 2,
-    MsgType = ?SN_DISCONNECT,
-    <<Length:8, MsgType:8>>.
-
-wait_response() ->
-    receive
-        {udp, _Socket, _, _, Bin} ->
-            case Bin of
-                <<_Len:8, ?SN_PUBLISH, _Flag:8, TopicId:16, MsgId:16, Data/binary>> ->
-                    io:format("recv publish TopicId: ~p, MsgId: ~p, Data: ~p~n", [TopicId, MsgId, Data]);
-                <<_Len:8, ?SN_CONNACK, 0:8>> ->
-                    io:format("recv connect ack~n");
-                <<_Len:8, ?SN_REGACK, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv regack TopicId=~p, MsgId=~p~n", [TopicId, MsgId]),
-                    TopicId;
-                <<_Len:8, ?SN_SUBACK, Flags:8, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv suback Flags=~p TopicId=~p, MsgId=~p~n", [Flags, TopicId, MsgId]);
-                <<_Len:8, ?SN_PUBACK, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv puback TopicId=~p, MsgId=~p~n", [TopicId, MsgId]);
-                _ ->
-                    io:format("ignore bin=~p~n", [Bin])
-            end;
-        Any ->
-            io:format("recv something else from udp socket ~p~n", [Any])
-    after
-        2000 ->
-            io:format("Error: receive timeout!~n"),
-            wait_response()
-    end.

apps/emqx_sn/examples/simple_example2.erl

@@ -1,120 +0,0 @@
--module(simple_example2).
-
--include("emqx_sn.hrl").
-
--define(HOST, "localhost").
--define(PORT, 1884).
-
--export([start/0]).
-
-start() ->
-    io:format("start to connect ~p:~p~n", [?HOST, ?PORT]),
-
-    %% create udp socket
-    {ok, Socket} = gen_udp:open(0, [binary]),
-
-    %% connect to emqx_sn broker
-    Packet = gen_connect_packet(<<"client1">>),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, Packet),
-    io:format("send connect packet=~p~n", [Packet]),
-    %% receive message
-    wait_response(),
-
-    %% subscribe, SHORT TOPIC NAME
-    SubscribePacket = gen_subscribe_packet(<<"T1">>),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, SubscribePacket),
-    io:format("send subscribe packet=~p~n", [SubscribePacket]),
-    wait_response(),
-
-    %% publish, SHORT TOPIC NAME
-    PublishPacket = gen_publish_packet(<<"T1">>, <<"Payload...">>),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, PublishPacket),
-    io:format("send publish packet=~p~n", [PublishPacket]),
-    wait_response(),
-
-    % wait for subscribed message from broker
-    wait_response(),
-
-    %% disconnect from emqx_sn broker
-    DisConnectPacket = gen_disconnect_packet(),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, DisConnectPacket),
-    io:format("send disconnect packet=~p~n", [DisConnectPacket]).
-
-
-
-gen_connect_packet(ClientId) ->
-    Length = 6+byte_size(ClientId),
-    MsgType = ?SN_CONNECT,
-    Dup = 0,
-    QoS = 0,
-    Retain = 0,
-    Will = 0,
-    CleanSession = 1,
-    TopicIdType = 0,
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    ProtocolId = 1,
-    Duration = 10,
-    <<Length:8, MsgType:8, Flag/binary, ProtocolId:8, Duration:16, ClientId/binary>>.
-
-gen_subscribe_packet(ShortTopic) ->
-    Length = 7,
-    MsgType = ?SN_SUBSCRIBE,
-    Dup = 0,
-    Retain = 0,
-    Will = 0,
-    QoS = 1,
-    CleanSession = 0,
-    TopicIdType = 2,   % SHORT TOPIC NAME
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    MsgId = 1,
-    <<Length:8, MsgType:8, Flag/binary, MsgId:16, ShortTopic/binary>>.
-
-gen_register_packet(Topic, TopicId) ->
-    Length = 6+byte_size(Topic),
-    MsgType = ?SN_REGISTER,
-    MsgId = 1,
-    <<Length:8, MsgType:8, TopicId:16, MsgId:16, Topic/binary>>.
-
-gen_publish_packet(ShortTopic, Payload) ->
-    Length = 7+byte_size(Payload),
-    MsgType = ?SN_PUBLISH,
-    Dup = 0,
-    QoS = 1,
-    Retain = 0,
-    Will = 0,
-    CleanSession = 0,
-    MsgId = 1,
-    TopicIdType = 2,  % SHORT TOPIC NAME
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    <<Length:8, MsgType:8, Flag/binary, ShortTopic/binary, MsgId:16, Payload/binary>>.
-
-gen_disconnect_packet()->
-    Length = 2,
-    MsgType = ?SN_DISCONNECT,
-    <<Length:8, MsgType:8>>.
-
-wait_response() ->
-    receive
-        {udp, _Socket, _, _, Bin} ->
-            case Bin of
-                <<_Len:8, ?SN_PUBLISH, _Flag:8, TopicId:16, MsgId:16, Data/binary>> ->
-                    io:format("recv publish TopicId: ~p, MsgId: ~p, Data: ~p~n", [TopicId, MsgId, Data]);
-                <<_Len:8, ?SN_CONNACK, 0:8>> ->
-                    io:format("recv connect ack~n");
-                <<_Len:8, ?SN_REGACK, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv regack TopicId=~p, MsgId=~p~n", [TopicId, MsgId]),
-                    TopicId;
-                <<_Len:8, ?SN_SUBACK, Flags:8, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv suback Flags=~p TopicId=~p, MsgId=~p~n", [Flags, TopicId, MsgId]);
-                <<_Len:8, ?SN_PUBACK, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv puback TopicId=~p, MsgId=~p~n", [TopicId, MsgId]);
-                _ ->
-                    io:format("ignore bin=~p~n", [Bin])
-            end;
-        Any ->
-            io:format("recv something else from udp socket ~p~n", [Any])
-    after
-        2000 ->
-            io:format("Error: receive timeout!~n"),
-            wait_response()
-    end.

apps/emqx_sn/examples/simple_example3.erl

@@ -1,120 +0,0 @@
--module(simple_example3).
-
--include("emqx_sn.hrl").
-
--define(HOST, "localhost").
--define(PORT, 1884).
-
--export([start/0]).
-
-start() ->
-    io:format("start to connect ~p:~p~n", [?HOST, ?PORT]),
-
-    %% create udp socket
-    {ok, Socket} = gen_udp:open(0, [binary]),
-
-    %% connect to emqx_sn broker
-    Packet = gen_connect_packet(<<"client1">>),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, Packet),
-    io:format("send connect packet=~p~n", [Packet]),
-    %% receive message
-    wait_response(),
-
-    %% subscribe  normal topic name
-    SubscribePacket = gen_subscribe_packet(<<"T3">>),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, SubscribePacket),
-    io:format("send subscribe packet=~p~n", [SubscribePacket]),
-    wait_response(),
-
-    %% publish   SHORT TOPIC NAME
-    PublishPacket = gen_publish_packet(<<"T3">>, <<"Payload...">>),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, PublishPacket),
-    io:format("send publish packet=~p~n", [PublishPacket]),
-    wait_response(),
-
-    % wait for subscribed message from broker
-    wait_response(),
-
-    %% disconnect from emqx_sn broker
-    DisConnectPacket = gen_disconnect_packet(),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, DisConnectPacket),
-    io:format("send disconnect packet=~p~n", [DisConnectPacket]).
-
-
-
-gen_connect_packet(ClientId) ->
-    Length = 6+byte_size(ClientId),
-    MsgType = ?SN_CONNECT,
-    Dup = 0,
-    QoS = 0,
-    Retain = 0,
-    Will = 0,
-    CleanSession = 1,
-    TopicIdType = 0,
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    ProtocolId = 1,
-    Duration = 10,
-    <<Length:8, MsgType:8, Flag/binary, ProtocolId:8, Duration:16, ClientId/binary>>.
-
-gen_subscribe_packet(ShortTopic) ->
-    Length = 7,
-    MsgType = ?SN_SUBSCRIBE,
-    Dup = 0,
-    Retain = 0,
-    Will = 0,
-    QoS = 1,
-    CleanSession = 0,
-    TopicIdType = 0,  % normal topic name
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    MsgId = 1,
-    <<Length:8, MsgType:8, Flag/binary, MsgId:16, ShortTopic/binary>>.
-
-gen_register_packet(Topic, TopicId) ->
-    Length = 6+byte_size(Topic),
-    MsgType = ?SN_REGISTER,
-    MsgId = 1,
-    <<Length:8, MsgType:8, TopicId:16, MsgId:16, Topic/binary>>.
-
-gen_publish_packet(ShortTopic, Payload) ->
-    Length = 7+byte_size(Payload),
-    MsgType = ?SN_PUBLISH,
-    Dup = 0,
-    QoS = 1,
-    Retain = 0,
-    Will = 0,
-    CleanSession = 0,
-    MsgId = 1,
-    TopicIdType = 2,  % SHORT TOPIC NAME
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    <<Length:8, MsgType:8, Flag/binary, ShortTopic/binary, MsgId:16, Payload/binary>>.
-
-gen_disconnect_packet()->
-    Length = 2,
-    MsgType = ?SN_DISCONNECT,
-    <<Length:8, MsgType:8>>.
-
-wait_response() ->
-    receive
-        {udp, _Socket, _, _, Bin} ->
-            case Bin of
-                <<_Len:8, ?SN_PUBLISH, _Flag:8, TopicId:16, MsgId:16, Data/binary>> ->
-                    io:format("recv publish TopicId: ~p, MsgId: ~p, Data: ~p~n", [TopicId, MsgId, Data]);
-                <<_Len:8, ?SN_CONNACK, 0:8>> ->
-                    io:format("recv connect ack~n");
-                <<_Len:8, ?SN_REGACK, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv regack TopicId=~p, MsgId=~p~n", [TopicId, MsgId]),
-                    TopicId;
-                <<_Len:8, ?SN_SUBACK, Flags:8, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv suback Flags=~p TopicId=~p, MsgId=~p~n", [Flags, TopicId, MsgId]);
-                <<_Len:8, ?SN_PUBACK, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv puback TopicId=~p, MsgId=~p~n", [TopicId, MsgId]);
-                _ ->
-                    io:format("ignore bin=~p~n", [Bin])
-            end;
-        Any ->
-            io:format("recv something else from udp socket ~p~n", [Any])
-    after
-        2000 ->
-            io:format("Error: receive timeout!~n"),
-            wait_response()
-    end.

apps/emqx_sn/examples/simple_example4.erl

@@ -1,151 +0,0 @@
--module(simple_example4).
-
--include("emqx_sn.hrl").
-
--define(HOST, {127,0,0,1}).
--define(PORT, 1884).
-
--export([start/0]).
-
-start(LoopTimes) ->
-    io:format("start to connect ~p:~p~n", [?HOST, ?PORT]),
-
-    %% create udp socket
-    {ok, Socket} = gen_udp:open(0, [binary]),
-
-    %% connect to emqx_sn broker
-    Packet = gen_connect_packet(<<"client1">>),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, Packet),
-    io:format("send connect packet=~p~n", [Packet]),
-    %% receive message
-    wait_response(),
-
-    %% register topic_id
-    RegisterPacket = gen_register_packet(<<"TopicA">>, 0),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, RegisterPacket),
-    io:format("send register packet=~p~n", [RegisterPacket]),
-    TopicId = wait_response(),
-
-    %% subscribe
-    SubscribePacket = gen_subscribe_packet(TopicId),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, SubscribePacket),
-    io:format("send subscribe packet=~p~n", [SubscribePacket]),
-    wait_response(),
-
-    %% loop publish
-    [begin
-         timer:sleep(1000),
-         io:format("~n-------------------- publish ~p start --------------------~n", [N]),
-
-         PublishPacket = gen_publish_packet(TopicId, <<"Payload...">>),
-         ok = gen_udp:send(Socket, ?HOST, ?PORT, PublishPacket),
-         io:format("send publish packet=~p~n", [PublishPacket]),
-         % wait for publish ack
-         wait_response(),
-         % wait for subscribed message from broker
-         wait_response(),
-
-         PingReqPacket = gen_pingreq_packet(),
-         ok = gen_udp:send(Socket, ?HOST, ?PORT, PingReqPacket),
-         % wait for pingresp
-         wait_response(),
-
-         io:format("--------------------- publish ~p end ---------------------~n", [N])
-     end || N <- lists:seq(1, LoopTimes)],
-
-    %% disconnect from emqx_sn broker
-    DisConnectPacket = gen_disconnect_packet(),
-    ok = gen_udp:send(Socket, ?HOST, ?PORT, DisConnectPacket),
-    io:format("send disconnect packet=~p~n", [DisConnectPacket]).
-
-
-
-gen_connect_packet(ClientId) ->
-    Length = 6+byte_size(ClientId),
-    MsgType = ?SN_CONNECT,
-    Dup = 0,
-    QoS = 0,
-    Retain = 0,
-    Will = 0,
-    CleanSession = 1,
-    TopicIdType = 0,
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    ProtocolId = 1,
-    Duration = 10,
-    <<Length:8, MsgType:8, Flag/binary, ProtocolId:8, Duration:16, ClientId/binary>>.
-
-gen_subscribe_packet(TopicId) ->
-    Length = 7,
-    MsgType = ?SN_SUBSCRIBE,
-    Dup = 0,
-    Retain = 0,
-    Will = 0,
-    QoS = 1,
-    CleanSession = 0,
-    TopicIdType = 1,
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    MsgId = 1,
-    <<Length:8, MsgType:8, Flag/binary, MsgId:16, TopicId:16>>.
-
-gen_register_packet(Topic, TopicId) ->
-    Length = 6+byte_size(Topic),
-    MsgType = ?SN_REGISTER,
-    MsgId = 1,
-    <<Length:8, MsgType:8, TopicId:16, MsgId:16, Topic/binary>>.
-
-gen_publish_packet(TopicId, Payload) ->
-    Length = 7+byte_size(Payload),
-    MsgType = ?SN_PUBLISH,
-    Dup = 0,
-    QoS = 1,
-    Retain = 0,
-    Will = 0,
-    CleanSession = 0,
-    MsgId = 1,
-    TopicIdType = 1,
-    Flag = <<Dup:1, QoS:2, Retain:1, Will:1, CleanSession:1, TopicIdType:2>>,
-    <<Length:8, MsgType:8, Flag/binary, TopicId:16, MsgId:16, Payload/binary>>.
-
-gen_puback_packet(TopicId, MsgId) ->
-    Length = 7,
-    MsgType = ?SN_PUBACK,
-    <<Length:8, MsgType:8, TopicId:16, MsgId:16, 0:8>>.
-
-gen_pingreq_packet() ->
-    Length = 2,
-    MsgType = ?SN_PINGREQ,
-    <<Length:8, MsgType:8>>.
-
-gen_disconnect_packet()->
-    Length = 2,
-    MsgType = ?SN_DISCONNECT,
-    <<Length:8, MsgType:8>>.
-
-wait_response() ->
-    receive
-        {udp, Socket, _, _, Bin} ->
-            case Bin of
-                <<_Len:8, ?SN_PUBLISH, _Flag:8, TopicId:16, MsgId:16, Data/binary>> ->
-                    io:format("recv publish TopicId: ~p, MsgId: ~p, Data: ~p~n", [TopicId, MsgId, Data]),
-                    ok = gen_udp:send(Socket, ?HOST, ?PORT, gen_puback_packet(TopicId, MsgId));
-                <<_Len:8, ?SN_CONNACK, 0:8>> ->
-                    io:format("recv connect ack~n");
-                <<_Len:8, ?SN_REGACK, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv regack TopicId=~p, MsgId=~p~n", [TopicId, MsgId]),
-                    TopicId;
-                <<_Len:8, ?SN_SUBACK, Flags:8, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv suback Flags=~p TopicId=~p, MsgId=~p~n", [Flags, TopicId, MsgId]);
-                <<_Len:8, ?SN_PUBACK, TopicId:16, MsgId:16, 0:8>> ->
-                    io:format("recv puback TopicId=~p, MsgId=~p~n", [TopicId, MsgId]);
-                <<_Len:8, ?SN_PINGRESP>> ->
-                    io:format("recv pingresp~n");
-                _ ->
-                    io:format("ignore bin=~p~n", [Bin])
-            end;
-        Any ->
-            io:format("recv something else from udp socket ~p~n", [Any])
-    after
-        2000 ->
-            io:format("Error: receive timeout!~n"),
-            wait_response()
-    end.

apps/emqx_sn/rebar.config

@@ -1,26 +0,0 @@
-{deps, []}.
-{plugins, [rebar3_proper]}.
-
-{deps,
- [{esockd, {git, "https://github.com/emqx/esockd", {tag, "5.7.4"}}}
- ]}.
-
-{edoc_opts, [{preprocess, true}]}.
-{erl_opts, [warn_unused_vars,
-            warn_shadow_vars,
-            warn_unused_import,
-            warn_obsolete_guard,
-            debug_info,
-            {parse_transform}]}.
-
-{dialyzer, [{warnings, [unmatched_returns, error_handling, race_conditions]}
-           ]}.
-
-{xref_checks, [undefined_function_calls, undefined_functions,
-               locals_not_used, deprecated_function_calls,
-               warnings_as_errors, deprecated_functions]}.
-{cover_enabled, true}.
-{cover_opts, [verbose]}.
-{cover_export_enabled, true}.
-
-{plugins, [coveralls]}.

apps/emqx_sn/src/emqx_sn.app.src

@@ -1,14 +0,0 @@
-{application, emqx_sn,
- [{description, "EMQ X MQTT-SN Plugin"},
-  {vsn, "4.4.0"}, % strict semver, bump manually!
-  {modules, []},
-  {registered, []},
-  {applications, [kernel,stdlib,esockd]},
-  {mod, {emqx_sn_app,[]}},
-  {env, []},
-  {licenses, ["Apache-2.0"]},
-  {maintainers, ["EMQ X Team <contact@emqx.io>"]},
-  {links, [{"Homepage", "https://emqx.io/"},
-           {"Github", "https://github.com/emqx/emqx-sn"}
-          ]}
- ]}.

apps/emqx_sn/src/emqx_sn.appup.src

@@ -1,19 +0,0 @@
-%% -*-: erlang -*-
-{VSN,
- [
-   {"4.3.2", [
-     {load_module, emqx_sn_gateway, brutal_purge, soft_purge, []}
-   ]},
-   {<<"4.3.[0-1]">>, [
-     {restart_application, emqx_sn}
-   ]}
- ],
- [
-   {"4.3.2", [
-     {load_module, emqx_sn_gateway, brutal_purge, soft_purge, []}
-   ]},
-   {<<"4.3.[0-1]">>, [
-     {restart_application, emqx_sn}
-   ]}
- ]
-}.

apps/emqx_sn/vars

@@ -1,8 +0,0 @@
-%% vars here are for test only, not intended for release
-
-{platform_bin_dir,  "bin"}.
-{platform_data_dir, "data"}.
-{platform_etc_dir,  "etc"}.
-{platform_lib_dir,  "lib"}.
-{platform_log_dir,  "log"}.
-{platform_plugins_dir,  "data/plugins"}.