feat: change mqtt.max_packet_size type from string to bytesize

apps/emqx/src/emqx_schema.erl

@@ -46,7 +46,6 @@
 -type timeout_duration_s() :: 0..?MAX_INT_TIMEOUT_S.
 -type timeout_duration_ms() :: 0..?MAX_INT_TIMEOUT_MS.
 -type bytesize() :: integer().
--type mqtt_max_packet_size() :: 1..?MAX_INT_MQTT_PACKET_SIZE.
 -type wordsize() :: bytesize().
 -type percent() :: float().
 -type file() :: string().
@@ -73,7 +72,6 @@
 -typerefl_from_string({timeout_duration_s/0, emqx_schema, to_timeout_duration_s}).
 -typerefl_from_string({timeout_duration_ms/0, emqx_schema, to_timeout_duration_ms}).
 -typerefl_from_string({bytesize/0, emqx_schema, to_bytesize}).
--typerefl_from_string({mqtt_max_packet_size/0, emqx_schema, to_bytesize}).
 -typerefl_from_string({wordsize/0, emqx_schema, to_wordsize}).
 -typerefl_from_string({percent/0, emqx_schema, to_percent}).
 -typerefl_from_string({comma_separated_list/0, emqx_schema, to_comma_separated_list}).
@@ -93,6 +91,7 @@
 
 -export([
     validate_heap_size/1,
+    validate_packet_size/1,
     user_lookup_fun_tr/2,
     validate_alarm_actions/1,
     validate_keepalive_multiplier/1,
@@ -154,7 +153,6 @@
     timeout_duration_s/0,
     timeout_duration_ms/0,
     bytesize/0,
-    mqtt_max_packet_size/0,
     wordsize/0,
     percent/0,
     file/0,
@@ -2618,6 +2616,16 @@ validate_heap_size(Siz) when is_integer(Siz) ->
 validate_heap_size(_SizStr) ->
     {error, invalid_heap_size}.
 
+validate_packet_size(Siz) when is_integer(Siz) andalso Siz < 1 ->
+    {error, #{reason => max_mqtt_packet_size_too_small, minimum => 1}};
+validate_packet_size(Siz) when is_integer(Siz) andalso Siz > ?MAX_INT_MQTT_PACKET_SIZE ->
+    Max = integer_to_list(round(?MAX_INT_MQTT_PACKET_SIZE / 1024 / 1024)) ++ "M",
+    {error, #{reason => max_mqtt_packet_size_too_large, maximum => Max}};
+validate_packet_size(Siz) when is_integer(Siz) ->
+    ok;
+validate_packet_size(_SizStr) ->
+    {error, invalid_packet_size}.
+
 validate_keepalive_multiplier(Multiplier) when
     is_number(Multiplier) andalso Multiplier >= 1.0 andalso Multiplier =< 65535.0
 ->
@@ -3380,9 +3388,10 @@ mqtt_general() ->
             )},
         {"max_packet_size",
             sc(
-                mqtt_max_packet_size(),
+                bytesize(),
                 #{
                     default => <<"1MB">>,
+                    validator => fun ?MODULE:validate_packet_size/1,
                     desc => ?DESC(mqtt_max_packet_size)
                 }
             )},

apps/emqx_dashboard/src/emqx_dashboard.app.src

@@ -2,7 +2,7 @@
 {application, emqx_dashboard, [
     {description, "EMQX Web Dashboard"},
     % strict semver, bump manually!
-    {vsn, "5.0.25"},
+    {vsn, "5.0.26"},
     {modules, []},
     {registered, [emqx_dashboard_sup]},
     {applications, [kernel, stdlib, mnesia, minirest, emqx, emqx_ctl, emqx_bridge_http]},
@@ -12,6 +12,6 @@
     {maintainers, ["EMQX Team <contact@emqx.io>"]},
     {links, [
         {"Homepage", "https://emqx.io/"},
-        {"Github", "https://github.com/emqx/emqx-dashboard"}
+        {"Github", "https://github.com/emqx/emqx-dashboard5"}
     ]}
 ]}.

apps/emqx_dashboard/src/emqx_dashboard_swagger.erl

@@ -856,8 +856,6 @@ typename_to_spec("timeout()", _Mod) ->
     };
 typename_to_spec("bytesize()", _Mod) ->
     #{type => string, example => <<"32MB">>};
-typename_to_spec("mqtt_max_packet_size()", _Mod) ->
-    #{type => string, example => <<"32MB">>};
 typename_to_spec("wordsize()", _Mod) ->
     #{type => string, example => <<"1024KB">>};
 typename_to_spec("map()", _Mod) ->

apps/emqx_opentelemetry/src/emqx_opentelemetry.app.src

@@ -1,6 +1,6 @@
 {application, emqx_opentelemetry, [
     {description, "OpenTelemetry for EMQX Broker"},
-    {vsn, "0.1.0"},
+    {vsn, "0.1.1"},
     {registered, []},
     {mod, {emqx_otel_app, []}},
     {applications, [kernel, stdlib, emqx]},

apps/emqx_opentelemetry/src/emqx_otel.erl

@@ -150,9 +150,9 @@ get_vm_gauge(Name) ->
     [{emqx_mgmt:vm_stats(Name), #{}}].
 
 get_cluster_gauge('node.running') ->
-    length(emqx:cluster_nodes(running));
+    [{length(emqx:cluster_nodes(running)), #{}}];
 get_cluster_gauge('node.stopped') ->
-    length(emqx:cluster_nodes(stopped)).
+    [{length(emqx:cluster_nodes(stopped)), #{}}].
 
 get_metric_counter(Name) ->
     [{emqx_metrics:val(Name), #{}}].

changes/ce/feat-11438.en.md

@@ -0,0 +1,2 @@
+Changed the type of the `mqtt.mqx_packet_size` from string to byteSize to better represent the valid numeric range.
+Strings will still be accepted for backwards compatibility.

rel/i18n/emqx_schema.hocon

@@ -1369,7 +1369,7 @@ sysmon_vm_process_low_watermark.label:
 """Process low watermark"""
 
 mqtt_max_packet_size.desc:
-"""Maximum MQTT packet size allowed."""
+"""Maximum MQTT packet size allowed. Default: 1 MB, Maximum: 256 MB"""
 
 mqtt_max_packet_size.label:
 """Max Packet Size"""