Fix conflict

Makefile

@@ -2,25 +2,24 @@
 
 PROJECT = emqx
 PROJECT_DESCRIPTION = EMQ X Broker
-PROJECT_VERSION = 3.0
 
 DEPS = jsx gproc gen_rpc ekka esockd cowboy clique emqx_passwd
 
-dep_jsx     = git https://github.com/talentdeficit/jsx 2.9.0
-dep_gproc   = git https://github.com/uwiger/gproc 0.8.0
-dep_gen_rpc = git https://github.com/emqx/gen_rpc 2.3.0
-dep_esockd  = git https://github.com/emqx/esockd v5.4.2
-dep_ekka    = git https://github.com/emqx/ekka v0.5.1
-dep_cowboy  = git https://github.com/ninenines/cowboy 2.4.0
-dep_clique  = git https://github.com/emqx/clique develop
-dep_emqx_passwd = git https://github.com/emqx/emqx-passwd win30
+dep_jsx     = hex-emqx 2.9.0
+dep_gproc   = hex-emqx 0.8.0
+dep_gen_rpc = git-emqx https://github.com/emqx/gen_rpc 2.3.0
+dep_esockd  = git-emqx https://github.com/emqx/esockd v5.4.2
+dep_ekka    = git-emqx https://github.com/emqx/ekka v0.5.1
+dep_cowboy  = hex-emqx 2.4.0
+dep_clique  = git-emqx https://github.com/emqx/clique develop
 
 NO_AUTOPATCH = cuttlefish
 
 ERLC_OPTS += +debug_info -DAPPLICATION=emqx
 
 BUILD_DEPS = cuttlefish
-dep_cuttlefish = git https://github.com/emqx/cuttlefish v2.1.1
+
+dep_cuttlefish = git-emqx https://github.com/emqx/cuttlefish v2.1.1
 
 #TEST_DEPS = emqx_ct_helplers
 #dep_emqx_ct_helplers = git git@github.com:emqx/emqx-ct-helpers
@@ -37,7 +36,8 @@ CT_SUITES = emqx emqx_client emqx_zone emqx_banned emqx_session \
 			emqx_keepalive emqx_lib emqx_metrics emqx_mod emqx_mod_sup emqx_mqtt_caps \
 			emqx_mqtt_props emqx_mqueue emqx_net emqx_pqueue emqx_router emqx_sm \
 			emqx_tables emqx_time emqx_topic emqx_trie emqx_vm emqx_mountpoint \
-		 	emqx_listeners emqx_protocol emqx_pool emqx_shared_sub emqx_bridge emqx_hooks
+			emqx_listeners emqx_protocol emqx_pool emqx_shared_sub emqx_bridge \
+			emqx_hooks emqx_batch
 
 CT_NODE_NAME = emqxct@127.0.0.1
 CT_OPTS = -cover test/ct.cover.spec -erl_args -name $(CT_NODE_NAME)
@@ -48,9 +48,32 @@ PLT_APPS = sasl asn1 ssl syntax_tools runtime_tools crypto xmerl os_mon inets pu
 DIALYZER_DIRS := ebin/
 DIALYZER_OPTS := --verbose --statistics -Werror_handling -Wrace_conditions #-Wunmatched_returns
 
+GIT_VSN := $(shell git --version | grep -oE "[0-9]{1,2}\.[0-9]{1,2}")
+GIT_VSN_17_COMP := $(shell echo -e "$(GIT_VSN)\n1.7" | sort -V | tail -1)
+
+ifeq ($(GIT_VSN_17_COMP),1.7)
+define dep_fetch_git-emqx
+	git clone -q -n -- $(call dep_repo,$(1)) $(DEPS_DIR)/$(call dep_name,$(1)); \
+		cd $(DEPS_DIR)/$(call dep_name,$(1)) && git checkout -q $(call dep_commit,$(1))
+endef
+else
+define dep_fetch_git-emqx
+	git clone -q -c advice.detachedHead=false --depth 1 -b $(call dep_commit,$(1)) -- $(call dep_repo,$(1)) $(DEPS_DIR)/$(call dep_name,$(1))
+endef
+endif
+
+core_http_get-emqx = curl -Lf$(if $(filter-out 0,$(V)),,s)o $(call core_native_path,$1) $2
+
+define dep_fetch_hex-emqx
+	mkdir -p $(ERLANG_MK_TMP)/hex $(DEPS_DIR)/$1; \
+	$(call core_http_get-emqx,$(ERLANG_MK_TMP)/hex/$1.tar,\
+		https://repo.hex.pm/tarballs/$1-$(strip $(word 2,$(dep_$1))).tar); \
+	tar -xOf $(ERLANG_MK_TMP)/hex/$1.tar contents.tar.gz | tar -C $(DEPS_DIR)/$1 -xzf -;
+endef
+
 include erlang.mk
 
-clean:: gen-clean rebar-clean
+clean:: gen-clean
 
 .PHONY: gen-clean
 gen-clean:
@@ -109,7 +132,7 @@ rebar-ct: app.config
 rebar-clean:
 	@rebar3 clean
 
-distclean:: rebar-clean
+distclean::
 	@rm -rf _build cover deps logs log data
 	@rm -f rebar.lock compile_commands.json cuttlefish
 
@@ -120,7 +143,7 @@ comma = ,
 quote = \"
 curly_l = "{"
 curly_r = "}"
-dep-versions = [$(foreach dep,$(DEPS) $(BUILD_DEPS),$(curly_l)$(dep),$(quote)$(word 3,$(dep_$(dep)))$(quote)$(curly_r)$(comma))[]]
+dep-versions = [$(foreach dep,$(DEPS) $(BUILD_DEPS),$(curly_l)$(dep),$(quote)$(word $(words $(dep_$(dep))),$(dep_$(dep)))$(quote)$(curly_r)$(comma))[]]
 
 .PHONY: dep-vsn-check
 dep-vsn-check:

README.md

@@ -63,6 +63,15 @@ You can reach the EMQ community and developers via the following channels:
 
 Please submit any bugs, issues, and feature requests to [emqx/emqx](https://github.com/emqx/emqx/issues).
 
+## MQTT Specifications
+
+You can read the mqtt protocol via the following links:
+
+[MQTT Version 3.1.1](https://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html)
+
+[MQTT Version 5.0](https://docs.oasis-open.org/mqtt/mqtt/v5.0/cs02/mqtt-v5.0-cs02.html)
+
+[MQTT SN](http://mqtt.org/new/wp-content/uploads/2009/06/MQTT-SN_spec_v1.2.pdf)
 
 ## License
 
@@ -74,4 +83,3 @@ Licensed under the Apache License, Version 2.0 (the "License");you may not use t
 
 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.
-

docs/README

@@ -1,11 +0,0 @@
-
-http://emqttd.io/docs/v2/
-
-or
-
-http://docs.emqtt.com/
-
-or
-
-http://emqttd-docs.rtfd.org
-

erlang.mk

@@ -1186,7 +1186,7 @@ else
 	fi
 	$(appsrc_verbose) cat src/$(PROJECT).app.src \
 		| sed "s/{[[:space:]]*modules[[:space:]]*,[[:space:]]*\[\]}/{modules, \[$(call comma_list,$(MODULES))\]}/" \
-		| sed "s/{id,[[:space:]]*\"git\"}/{id, \"$(subst /,\/,$(GITDESCRIBE))\"}/" \
+		| sed "s/{vsn,[[:space:]]*\"git\"}/{vsn, \"$(subst /,\/,$(GITDESCRIBE))\"}/" \
 		> ebin/$(PROJECT).app
 endif
 

etc/emqx.conf

@@ -1929,7 +1929,7 @@ broker.shared_dispatch_ack_enabled = false
 ## Enable batch clean for deleted routes.
 ##
 ## Value: Flag
-broker.route_batch_clean = on
+broker.route_batch_clean = off
 
 ##--------------------------------------------------------------------
 ## System Monitor

priv/emqx.schema

@@ -426,12 +426,18 @@ end}.
   {datatype, file}
 ]}.
 
-{mapping, "sasl", "sasl.sasl_error_logger", [
+{mapping, "log.sasl", "sasl.sasl_error_logger", [
   {default, off},
   {datatype, flag},
   hidden
 ]}.
 
+{mapping, "log.error_logger", "kernel.error_logger", [
+  {default, silent},
+  {datatype, {enum, [silent]}},
+  hidden
+]}.
+
 {translation, "emqx.primary_log_level", fun(Conf) ->
     cuttlefish:conf_get("log.level", Conf)
 end}.

rebar.config.script

@@ -1,4 +1,12 @@
 
+CONFIG0 = case os:getenv("REBAR_GIT_CLONE_OPTIONS") of
+              "--depth 1" ->
+                  CONFIG;
+              _ ->
+                  os:putenv("REBAR_GIT_CLONE_OPTIONS", "--depth 1"),
+                  CONFIG
+          end,
+
 CONFIG1 = case os:getenv("TRAVIS") of
               "true" ->
                   JobId = os:getenv("TRAVIS_JOB_ID"),

src/emqx.app.src

@@ -1,6 +1,6 @@
 {application,emqx,
              [{description,"EMQ X Broker"},
-              {vsn,"3.0-rc.3"},
+              {vsn,"git"},
               {modules,[]},
               {registered,[emqx_sup]},
               {applications,[kernel,stdlib,jsx,gproc,gen_rpc,esockd,

src/emqx_banned.erl

@@ -43,7 +43,8 @@ mnesia(boot) ->
                 {type, set},
                 {disc_copies, [node()]},
                 {record_name, banned},
-                {attributes, record_info(fields, banned)}]);
+                {attributes, record_info(fields, banned)},
+                {storage_properties, [{ets, [{read_concurrency, true}]}]}]);
 
 mnesia(copy) ->
     ok = ekka_mnesia:copy_table(?TAB).

src/emqx_batch.erl

@@ -0,0 +1,74 @@
+%% Copyright (c) 2018 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.
+
+-module(emqx_batch).
+
+-export([init/1, push/2, commit/1]).
+-export([size/1, items/1]).
+
+-type(options() :: #{
+        batch_size => non_neg_integer(),
+        linger_ms => pos_integer(),
+        commit_fun := function()
+       }).
+-export_type([options/0]).
+
+-record(batch, {
+          batch_size :: non_neg_integer(),
+          batch_q :: list(any()),
+          linger_ms :: pos_integer(),
+          linger_timer :: reference() | undefined,
+          commit_fun :: function()
+         }).
+-type(batch() :: #batch{}).
+-export_type([batch/0]).
+
+-spec(init(options()) -> batch()).
+init(Opts) when is_map(Opts) ->
+    #batch{batch_size = maps:get(batch_size, Opts, 1000),
+           batch_q = [],
+           linger_ms = maps:get(linger_ms, Opts, 1000),
+           commit_fun = maps:get(commit_fun, Opts)}.
+
+-spec(push(any(), batch()) -> batch()).
+push(El, Batch = #batch{batch_q = Q, linger_ms = Ms, linger_timer = undefined}) when length(Q) == 0 ->
+    Batch#batch{batch_q = [El], linger_timer = erlang:send_after(Ms, self(), batch_linger_expired)};
+
+%% no limit.
+push(El, Batch = #batch{batch_size = 0, batch_q = Q}) ->
+    Batch#batch{batch_q = [El|Q]};
+
+push(El, Batch = #batch{batch_size = MaxSize, batch_q = Q}) when length(Q) >= MaxSize ->
+    commit(Batch#batch{batch_q = [El|Q]});
+
+push(El, Batch = #batch{batch_q = Q}) ->
+    Batch#batch{batch_q = [El|Q]}.
+
+-spec(commit(batch()) -> batch()).
+commit(Batch = #batch{batch_q = Q, commit_fun = Commit}) ->
+    _ = Commit(lists:reverse(Q)),
+    reset(Batch).
+
+reset(Batch = #batch{linger_timer = TRef}) ->
+    _ = emqx_misc:cancel_timer(TRef),
+    Batch#batch{batch_q = [], linger_timer = undefined}.
+
+-spec(size(batch()) -> non_neg_integer()).
+size(#batch{batch_q = Q}) ->
+    length(Q).
+
+-spec(items(batch()) -> list(any())).
+items(#batch{batch_q = Q}) ->
+    lists:reverse(Q).
+

src/emqx_broker.erl

@@ -33,6 +33,11 @@
 -export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2,
          code_change/3]).
 
+-ifdef(TEST).
+-compile(export_all).
+-compile(nowarn_export_all).
+-endif.
+
 -record(state, {pool, id, submap, submon}).
 -record(subscribe, {topic, subpid, subid, subopts = #{}}).
 -record(unsubscribe, {topic, subpid, subid}).
@@ -327,8 +332,6 @@ handle_call(Req, _From, State) ->
     emqx_logger:error("[Broker] unexpected call: ~p", [Req]),
     {reply, ignored, State}.
 
-
-
 handle_cast({From, #subscribe{topic = Topic, subpid = SubPid, subid = SubId, subopts = SubOpts}}, State) ->
     Subscriber = {SubPid, SubId},
     case ets:member(?SUBOPTION, {Topic, Subscriber}) of

src/emqx_connection.erl

@@ -170,7 +170,7 @@ send_fun(Transport, Socket) ->
         Data = emqx_frame:serialize(Packet, Options),
         try Transport:async_send(Socket, Data) of
             ok ->
-                emqx_metrics:inc('bytes/sent', iolist_size(Data)),
+                emqx_metrics:trans(inc, 'bytes/sent', iolist_size(Data)),
                 ok;
             Error -> Error
         catch
@@ -215,6 +215,7 @@ handle_info({timeout, Timer, emit_stats},
             State = #state{stats_timer = Timer,
                            proto_state = ProtoState
                           }) ->
+    emqx_metrics:commit(),
     emqx_cm:set_conn_stats(emqx_protocol:client_id(ProtoState), stats(State)),
     NewState = State#state{stats_timer = undefined},
     Limits = erlang:get(force_shutdown_policy),
@@ -248,7 +249,7 @@ handle_info(activate_sock, State) ->
 handle_info({inet_async, _Sock, _Ref, {ok, Data}}, State) ->
     ?LOG(debug, "RECV ~p", [Data]),
     Size = iolist_size(Data),
-    emqx_metrics:inc('bytes/received', Size),
+    emqx_metrics:trans(inc, 'bytes/received', Size),
     Incoming = #{bytes => Size, packets => 0},
     handle_packet(Data, State#state{await_recv = false, incoming = Incoming});
 

src/emqx_metrics.erl

@@ -19,6 +19,7 @@
 -export([start_link/0]).
 -export([new/1, all/0]).
 -export([val/1, inc/1, inc/2, inc/3, dec/2, dec/3, set/2]).
+-export([trans/2, trans/3, trans/4, commit/0]).
 %% Received/sent metrics
 -export([received/1, sent/1]).
 
@@ -133,10 +134,8 @@ inc(Metric, Val) when is_atom(Metric) ->
 
 %% @doc Increase metric value
 -spec(inc(counter | gauge, atom(), pos_integer()) -> pos_integer()).
-inc(gauge, Metric, Val) ->
-    update_counter(key(gauge, Metric), {2, Val});
-inc(counter, Metric, Val) ->
-    update_counter(key(counter, Metric), {2, Val}).
+inc(Type, Metric, Val) ->
+    update_counter(key(Type, Metric), {2, Val}).
 
 %% @doc Decrease metric value
 -spec(dec(gauge, atom()) -> integer()).
@@ -154,6 +153,41 @@ set(Metric, Val) when is_atom(Metric) ->
 set(gauge, Metric, Val) ->
     ets:insert(?TAB, {key(gauge, Metric), Val}).
 
+trans(inc, Metric) ->
+    trans(inc, {counter, Metric}, 1).
+
+trans(Opt, {gauge, Metric}, Val) ->
+    trans(Opt, gauge, Metric, Val);
+trans(inc, {counter, Metric}, Val) ->
+    trans(inc, counter, Metric, Val);
+trans(inc, Metric, Val) when is_atom(Metric) ->
+    trans(inc, counter, Metric, Val);
+trans(dec, gauge, Metric) ->
+    trans(dec, gauge, Metric, 1).
+
+trans(inc, Type, Metric, Val) ->
+    hold(Type, Metric, Val);
+trans(dec, gauge, Metric, Val) ->
+    hold(gauge, Metric, -Val).
+
+hold(Type, Metric, Val) when Type =:= counter orelse Type =:= gauge ->
+    put('$metrics', case get('$metrics') of
+                        undefined ->
+                            #{{Type, Metric} => Val};
+                        Metrics ->
+                            maps:update_with({Type, Metric}, fun(Cnt) -> Cnt + Val end, Val, Metrics)
+                    end).
+
+commit() ->
+    case get('$metrics') of
+        undefined -> ok;
+        Metrics ->
+            maps:fold(fun({Type, Metric}, Val, _Acc) -> 
+                          update_counter(key(Type, Metric), {2, Val})
+                      end, 0, Metrics),
+            erase('$metrics')
+    end.
+
 %% @doc Metric key
 key(gauge, Metric) ->
     {Metric, 0};

src/emqx_reason_codes.erl

@@ -28,7 +28,7 @@ name(2, _Ver) -> client_identifier_not_valid;
 name(3, _Ver) -> server_unavaliable;
 name(4, _Ver) -> malformed_username_or_password;
 name(5, _Ver) -> unauthorized_client;
-name(I, _Ver) -> list_to_atom("unkown_connack" ++ integer_to_list(I)).
+name(_, _Ver) -> unknown_error.
 
 name(16#00) -> success;
 name(16#01) -> granted_qos1;
@@ -73,7 +73,7 @@ name(16#9F) -> connection_rate_exceeded;
 name(16#A0) -> maximum_connect_time;
 name(16#A1) -> subscription_identifiers_not_supported;
 name(16#A2) -> wildcard_subscriptions_not_supported;
-name(Code)  -> list_to_atom("unkown_reason_code" ++ integer_to_list(Code)).
+name(_Code) -> unknown_error.
 
 text(16#00) -> <<"Success">>;
 text(16#01) -> <<"Granted QoS 1">>;
@@ -118,7 +118,7 @@ text(16#9F) -> <<"Connection rate exceeded">>;
 text(16#A0) -> <<"Maximum connect time">>;
 text(16#A1) -> <<"Subscription Identifiers not supported">>;
 text(16#A2) -> <<"Wildcard Subscriptions not supported">>;
-text(Code)  -> iolist_to_binary(["Unkown Reason Code:", integer_to_list(Code)]).
+text(_Code) -> <<"Unknown error">>.
 
 compat(connack, 16#80) -> ?CONNACK_PROTO_VER;
 compat(connack, 16#81) -> ?CONNACK_PROTO_VER;

src/emqx_router.erl

@@ -54,7 +54,9 @@ mnesia(boot) ->
                 {type, bag},
                 {ram_copies, [node()]},
                 {record_name, route},
-                {attributes, record_info(fields, route)}]);
+                {attributes, record_info(fields, route)},
+                {storage_properties, [{ets, [{read_concurrency, true},
+                                             {write_concurrency, true}]}]}]);
 mnesia(copy) ->
     ok = ekka_mnesia:copy_table(?ROUTE).
 
@@ -137,7 +139,7 @@ pick(Topic) ->
 init([Pool, Id]) ->
     rand:seed(exsplus, erlang:timestamp()),
     gproc_pool:connect_worker(Pool, {Pool, Id}),
-    Batch = #batch{enabled = emqx_config:get_env(route_batch_delete, false),
+    Batch = #batch{enabled = emqx_config:get_env(route_batch_clean, false),
                    pending = sets:new()},
     {ok, ensure_batch_timer(#state{pool = Pool, id = Id, batch = Batch})}.
 
@@ -191,7 +193,7 @@ handle_cast(Msg, State) ->
     {noreply, State}.
 
 handle_info({timeout, _TRef, batch_delete}, State = #state{batch = Batch}) ->
-    _ = del_direct_routes(Batch#batch.pending),
+    _ = del_direct_routes(sets:to_list(Batch#batch.pending)),
     {noreply, ensure_batch_timer(State#state{batch = ?BATCH(true, sets:new())}), hibernate};
 
 handle_info(Info, State) ->

src/emqx_router_helper.erl

@@ -53,7 +53,8 @@ mnesia(boot) ->
                 {type, set},
                 {ram_copies, [node()]},
                 {record_name, routing_node},
-                {attributes, record_info(fields, routing_node)}]);
+                {attributes, record_info(fields, routing_node)},
+                {storage_properties, [{ets, [{read_concurrency, true}]}]}]);
 
 mnesia(copy) ->
     ok = ekka_mnesia:copy_table(?ROUTING_NODE).

src/emqx_session.erl

@@ -421,7 +421,7 @@ handle_call({register_publish_packet_id, PacketId, Ts}, _From,
                           {ok, ensure_await_rel_timer(State1)}
                   end;
               true ->
-                  emqx_metrics:inc('messages/qos2/dropped'),
+                  emqx_metrics:trans(inc, 'messages/qos2/dropped'),
                   ?LOG(warning, "Dropped qos2 packet ~w for too many awaiting_rel", [PacketId], State),
                   {{error, ?RC_RECEIVE_MAXIMUM_EXCEEDED}, State}
           end);
@@ -432,7 +432,7 @@ handle_call({pubrec, PacketId, _ReasonCode}, _From, State = #state{inflight = In
               true ->
                   {ok, acked(pubrec, PacketId, State)};
               false ->
-                  emqx_metrics:inc('packets/pubrec/missed'),
+                  emqx_metrics:trans(inc, 'packets/pubrec/missed'),
                   ?LOG(warning, "The PUBREC PacketId ~w is not found.", [PacketId], State),
                   {{error, ?RC_PACKET_IDENTIFIER_NOT_FOUND}, State}
           end);
@@ -443,7 +443,7 @@ handle_call({pubrel, PacketId, _ReasonCode}, _From, State = #state{awaiting_rel
               {_Ts, AwaitingRel1} ->
                   {ok, State#state{awaiting_rel = AwaitingRel1}};
               error ->
-                  emqx_metrics:inc('packets/pubrel/missed'),
+                  emqx_metrics:trans(inc, 'packets/pubrel/missed'),
                   ?LOG(warning, "Cannot find PUBREL: ~w", [PacketId], State),
                   {{error, ?RC_PACKET_IDENTIFIER_NOT_FOUND}, State}
           end);
@@ -502,7 +502,7 @@ handle_cast({puback, PacketId, _ReasonCode}, State = #state{inflight = Inflight}
             noreply(dequeue(acked(puback, PacketId, State)));
         false ->
             ?LOG(warning, "The PUBACK PacketId ~w is not found", [PacketId], State),
-            emqx_metrics:inc('packets/puback/missed'),
+            emqx_metrics:trans(inc, 'packets/puback/missed'),
             {noreply, State}
     end;
 
@@ -513,7 +513,7 @@ handle_cast({pubcomp, PacketId, _ReasonCode}, State = #state{inflight = Inflight
             noreply(dequeue(acked(pubcomp, PacketId, State)));
         false ->
             ?LOG(warning, "The PUBCOMP PacketId ~w is not found", [PacketId], State),
-            emqx_metrics:inc('packets/pubcomp/missed'),
+            emqx_metrics:trans(inc, 'packets/pubcomp/missed'),
             {noreply, State}
     end;
 
@@ -603,6 +603,7 @@ handle_info({timeout, Timer, check_awaiting_rel}, State = #state{await_rel_timer
 handle_info({timeout, Timer, emit_stats},
             State = #state{client_id = ClientId,
                            stats_timer = Timer}) ->
+    emqx_metrics:commit(),
     _ = emqx_sm:set_session_stats(ClientId, stats(State)),
     NewState = State#state{stats_timer = undefined},
     Limits = erlang:get(force_shutdown_policy),
@@ -734,7 +735,7 @@ retry_delivery(Force, [{Type, Msg0, Ts} | Msgs], Now,
                             {publish, {PacketId, Msg}} ->
                                 case emqx_message:is_expired(Msg) of
                                     true ->
-                                        emqx_metrics:inc('messages/expired'),
+                                        emqx_metrics:trans(inc, 'messages/expired'),
                                         emqx_inflight:delete(PacketId, Inflight);
                                     false ->
                                         redeliver({PacketId, Msg}, State),
@@ -774,7 +775,7 @@ expire_awaiting_rel([{PacketId, Ts} | More], Now,
                     State = #state{awaiting_rel = AwaitingRel, await_rel_timeout = Timeout}) ->
     case (timer:now_diff(Now, Ts) div 1000) of
         Age when Age >= Timeout ->
-            emqx_metrics:inc('messages/qos2/expired'),
+            emqx_metrics:trans(inc, 'messages/qos2/expired'),
             ?LOG(warning, "Dropped qos2 packet ~s for await_rel_timeout", [PacketId], State),
             expire_awaiting_rel(More, Now, State#state{awaiting_rel = maps:remove(PacketId, AwaitingRel)});
         Age ->

src/emqx_sm_registry.erl

@@ -69,9 +69,11 @@ init([]) ->
                 {type, bag},
                 {ram_copies, [node()]},
                 {record_name, global_session},
-                {attributes, record_info(fields, global_session)}]),
+                {attributes, record_info(fields, global_session)},
+                {storage_properties, [{ets, [{read_concurrency, true},
+                                             {write_concurrency, true}]}]}]),
     ok = ekka_mnesia:copy_table(?TAB),
-    ekka:monitor(membership),
+    _ = ekka:monitor(membership),
     {ok, #{}}.
 
 handle_call(Req, _From, State) ->

src/emqx_trie.erl

@@ -36,16 +36,21 @@
 %% @doc Create or replicate trie tables.
 -spec(mnesia(boot | copy) -> ok).
 mnesia(boot) ->
+    %% Optimize
+    StoreProps = [{ets, [{read_concurrency, true},
+                         {write_concurrency, true}]}],
     %% Trie table
     ok = ekka_mnesia:create_table(?TRIE, [
                 {ram_copies, [node()]},
                 {record_name, trie},
-                {attributes, record_info(fields, trie)}]),
+                {attributes, record_info(fields, trie)},
+                {storage_properties, StoreProps}]),
     %% Trie node table
     ok = ekka_mnesia:create_table(?TRIE_NODE, [
                 {ram_copies, [node()]},
                 {record_name, trie_node},
-                {attributes, record_info(fields, trie_node)}]);
+                {attributes, record_info(fields, trie_node)},
+                {storage_properties, StoreProps}]);
 
 mnesia(copy) ->
     %% Copy trie table

src/emqx_ws_connection.erl

@@ -148,7 +148,7 @@ send_fun(WsPid) ->
     fun(Packet, Options) ->
         Data = emqx_frame:serialize(Packet, Options),
         BinSize = iolist_size(Data),
-        emqx_metrics:inc('bytes/sent', BinSize),
+        emqx_metrics:trans(inc, 'bytes/sent', BinSize),
         put(send_oct, get(send_oct) + BinSize),
         put(send_cnt, get(send_cnt) + 1),
         WsPid ! {binary, iolist_to_binary(Data)},
@@ -167,7 +167,7 @@ websocket_handle({binary, Data}, State = #state{parser_state = ParserState,
     BinSize = iolist_size(Data),
     put(recv_oct, get(recv_oct) + BinSize),
     ?LOG(debug, "RECV ~p", [Data]),
-    emqx_metrics:inc('bytes/received', BinSize),
+    emqx_metrics:trans(inc, 'bytes/received', BinSize),
     case catch emqx_frame:parse(iolist_to_binary(Data), ParserState) of
         {more, NewParserState} ->
             {ok, State#state{parser_state = NewParserState}};
@@ -223,6 +223,7 @@ websocket_info({deliver, PubOrAck}, State = #state{proto_state = ProtoState}) ->
 
 websocket_info({timeout, Timer, emit_stats},
                State = #state{stats_timer = Timer, proto_state = ProtoState}) ->
+    emqx_metrics:commit(),
     emqx_cm:set_conn_stats(emqx_protocol:client_id(ProtoState), stats(State)),
     {ok, State#state{stats_timer = undefined}, hibernate};
 

test/emqx_batch_SUITE.erl

@@ -0,0 +1,50 @@
+%% Copyright (c) 2018 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.
+
+-module(emqx_batch_SUITE).
+
+-compile(export_all).
+-compile(nowarn_export_all).
+
+-include_lib("eunit/include/eunit.hrl").
+
+all() ->
+    [batch_full_commit, batch_linger_commit].
+
+batch_full_commit(_) ->
+    B0 = emqx_batch:init(#{batch_size => 3, linger_ms => 2000, commit_fun => fun(_) -> ok end}),
+    B3 = lists:foldl(fun(E, B) -> emqx_batch:push(E, B) end, B0, [a, b, c]),
+    ?assertEqual(3, emqx_batch:size(B3)),
+    ?assertEqual([a, b, c], emqx_batch:items(B3)),
+    %% Trigger commit fun.
+    B4 = emqx_batch:push(a, B3),
+    ?assertEqual(0, emqx_batch:size(B4)),
+    ?assertEqual([], emqx_batch:items(B4)).
+
+batch_linger_commit(_) ->
+    CommitFun = fun(Q) -> ?assertEqual(3, length(Q)) end,
+    B0 = emqx_batch:init(#{batch_size => 3, linger_ms => 500, commit_fun => CommitFun}),
+    B3 = lists:foldl(fun(E, B) -> emqx_batch:push(E, B) end, B0, [a, b, c]),
+    ?assertEqual(3, emqx_batch:size(B3)),
+    ?assertEqual([a, b, c], emqx_batch:items(B3)),
+    receive
+        batch_linger_expired ->
+            B4 = emqx_batch:commit(B3),
+            ?assertEqual(0, emqx_batch:size(B4)),
+            ?assertEqual([], emqx_batch:items(B4))
+    after
+        1000 ->
+            error(linger_timer_not_triggered)
+    end.
+

test/emqx_broker_SUITE.erl

@@ -38,6 +38,7 @@ groups() ->
                            publish, pubsub,
                            t_local_subscribe,
                            t_shared_subscribe,
+                           dispatch_with_no_sub,
                            'pubsub#', 'pubsub+']},
      {session, [sequence], [start_session]},
      {metrics, [sequence], [inc_dec_metric]},
@@ -76,6 +77,11 @@ publish(_) ->
     emqx:publish(Msg),
     ?assert(receive {dispatch, <<"test/+">>, Msg} -> true after 5 -> false end).
 
+dispatch_with_no_sub(_) ->
+    Msg = emqx_message:make(ct, <<"no_subscribers">>, <<"hello">>),
+    Delivery = #delivery{sender = self(), message = Msg, results = []},
+    ?assertEqual(Delivery, emqx_broker:route([{<<"no_subscribers">>, node()}], Delivery)).
+
 pubsub(_) ->
     true = emqx:is_running(node()),
     Self = self(),
@@ -193,4 +199,3 @@ set_alarms(_) ->
     ?assertEqual(1, length(Alarms)),
     emqx_alarm_mgr:clear_alarm(<<"1">>),
     [] = emqx_alarm_mgr:get_alarms().
-

test/emqx_metrics_SUITE.erl

@@ -19,21 +19,40 @@
 
 -include("emqx_mqtt.hrl").
 
-all() -> [t_inc_dec_metrics].
+all() -> [t_inc_dec_metrics, t_trans].
 
 t_inc_dec_metrics(_) ->
     {ok, _} = emqx_metrics:start_link(),
     {0, 0} = {emqx_metrics:val('bytes/received'), emqx_metrics:val('messages/retained')},
     emqx_metrics:inc('bytes/received'),
     emqx_metrics:inc({counter, 'bytes/received'}, 2),
-    emqx_metrics:inc(counter, 'bytes/received', 2),
+    emqx_metrics:inc(counter, 'bytes/received', 1),
+    emqx_metrics:inc('bytes/received', 1),
     emqx_metrics:inc({gauge, 'messages/retained'}, 2),
     emqx_metrics:inc(gauge, 'messages/retained', 2),
     {5, 4} = {emqx_metrics:val('bytes/received'), emqx_metrics:val('messages/retained')},
     emqx_metrics:dec(gauge, 'messages/retained'),
     emqx_metrics:dec(gauge, 'messages/retained', 1),
     2 = emqx_metrics:val('messages/retained'),
+    emqx_metrics:set('messages/retained', 3),
+    3 = emqx_metrics:val('messages/retained'),
     emqx_metrics:received(#mqtt_packet{header = #mqtt_packet_header{type = ?CONNECT}}),
     {1, 1} = {emqx_metrics:val('packets/received'), emqx_metrics:val('packets/connect')},
     emqx_metrics:sent(#mqtt_packet{header = #mqtt_packet_header{type = ?CONNACK}}),
     {1, 1} = {emqx_metrics:val('packets/sent'), emqx_metrics:val('packets/connack')}.
+
+t_trans(_) ->
+    {ok, _} = emqx_metrics:start_link(),
+    emqx_metrics:trans(inc, 'bytes/received'),
+    emqx_metrics:trans(inc, {counter, 'bytes/received'}, 2),
+    emqx_metrics:trans(inc, counter, 'bytes/received', 2),
+    emqx_metrics:trans(inc, {gauge, 'messages/retained'}, 2),
+    emqx_metrics:trans(inc, gauge, 'messages/retained', 2),
+    {0, 0} = {emqx_metrics:val('bytes/received'), emqx_metrics:val('messages/retained')},
+    emqx_metrics:commit(),
+    {5, 4} = {emqx_metrics:val('bytes/received'), emqx_metrics:val('messages/retained')},
+    emqx_metrics:trans(dec, gauge, 'messages/retained'),
+    emqx_metrics:trans(dec, gauge, 'messages/retained', 1),
+    4 = emqx_metrics:val('messages/retained'),
+    emqx_metrics:commit(),
+    2 = emqx_metrics:val('messages/retained').

test/emqx_router_SUITE.erl

@@ -64,7 +64,7 @@ add_del_route(_) ->
     ?R:del_route(From, <<"a/b/c">>, node()),
 
     ?R:del_route(From, <<"a/+/b">>, node()),
-    timer:sleep(1),
+    timer:sleep(120),
     ?assertEqual([], lists:sort(?R:topics())).
 
 match_routes(_) ->

test/emqx_session_SUITE.erl

@@ -45,6 +45,7 @@ ignore_loop(_Config) ->
     application:set_env(emqx, mqtt_ignore_loop_deliver, false).
 
 t_session_all(_) ->
+    emqx_zone:set_env(internal, idle_timeout, 100),
     ClientId = <<"ClientId">>,
     {ok, ConnPid} = emqx_mock_client:start_link(ClientId),
     {ok, SPid} = emqx_mock_client:open_session(ConnPid, ClientId, internal),