Prepare for MQTT/5.0

include/emqttd.hrl

@@ -22,9 +22,9 @@
 
 -define(LICENSE_MESSAGE, "Licensed under the Apache License, Version 2.0").
 
--define(PROTOCOL_VERSION, "MQTT/3.1.1").
+-define(PROTOCOL_VERSION, "MQTT/5.0").
 
--define(ERTS_MINIMUM, "7.0").
+-define(ERTS_MINIMUM, "8.0").
 
 %%--------------------------------------------------------------------
 %% Sys/Queue/Share Topics' Prefix
@@ -42,7 +42,7 @@
 
 -type(pubsub() :: publish | subscribe).
 
--define(PUBSUB(PS), (PS =:= publish orelse PS =:= subscribe)).
+-define(PS(PS), (PS =:= publish orelse PS =:= subscribe)).
 
 %%--------------------------------------------------------------------
 %% MQTT Topic
@@ -172,7 +172,7 @@
           severity    :: warning | error | critical,
           title       :: iolist() | binary(),
           summary     :: iolist() | binary(),
-          timestamp   :: erlang:timestamp() %% Timestamp
+          timestamp   :: erlang:timestamp()
         }).
 
 -type(mqtt_alarm() :: #mqtt_alarm{}).
@@ -186,8 +186,7 @@
 -type(mqtt_plugin() :: #mqtt_plugin{}).
 
 %%--------------------------------------------------------------------
-%% MQTT CLI Command
-%% For example: 'broker metrics'
+%% MQTT CLI Command. For example: 'broker metrics'
 %%--------------------------------------------------------------------
 
 -record(mqtt_cli, { name, action, args = [], opts = [], usage, descr }).