fix(log): respect payload encoding settings when formatting packets

apps/emqx/include/logger.hrl

@@ -88,7 +88,7 @@
     ?_DO_TRACE(Tag, Msg, Meta),
     ?SLOG(
         Level,
-        (emqx_trace_formatter:format_meta_map(Meta))#{msg => Msg, tag => Tag},
+        (Meta)#{msg => Msg, tag => Tag},
         #{is_trace => false}
     )
 end).

apps/emqx/src/emqx_logger_jsonfmt.erl

@@ -105,7 +105,7 @@ format(Msg, Meta, Config) ->
 maybe_format_msg(undefined, _Meta, _Config) ->
     #{};
 maybe_format_msg({report, Report0} = Msg, #{report_cb := Cb} = Meta, Config) ->
-    Report = emqx_logger_textfmt:try_encode_payload(Report0, Config),
+    Report = emqx_logger_textfmt:try_encode_meta(Report0, Config),
     case is_map(Report) andalso Cb =:= ?DEFAULT_FORMATTER of
         true ->
             %% reporting a map without a customised format function

apps/emqx/src/emqx_logger_textfmt.erl

@@ -20,7 +20,7 @@
 
 -export([format/2]).
 -export([check_config/1]).
--export([try_format_unicode/1, try_encode_payload/2]).
+-export([try_format_unicode/1, try_encode_meta/2]).
 %% Used in the other log formatters
 -export([evaluate_lazy_values_if_dbg_level/1, evaluate_lazy_values/1]).
 
@@ -105,7 +105,7 @@ is_list_report_acceptable(_) ->
 enrich_report(ReportRaw0, Meta, Config) ->
     %% clientid and peername always in emqx_conn's process metadata.
     %% topic and username can be put in meta using ?SLOG/3, or put in msg's report by ?SLOG/2
-    ReportRaw = try_encode_payload(ReportRaw0, Config),
+    ReportRaw = try_encode_meta(ReportRaw0, Config),
     Topic =
         case maps:get(topic, Meta, undefined) of
             undefined -> maps:get(topic, ReportRaw, undefined);
@@ -172,9 +172,22 @@ enrich_topic({Fmt, Args}, #{topic := Topic}) when is_list(Fmt) ->
 enrich_topic(Msg, _) ->
     Msg.
 
-try_encode_payload(#{payload := Payload} = Report, #{payload_encode := Encode}) ->
+try_encode_meta(Report, Config) ->
+    lists:foldl(
+        fun(Meta, Acc) ->
+            try_encode_meta(Meta, Acc, Config)
+        end,
+        Report,
+        [payload, packet]
+    ).
+
+try_encode_meta(payload, #{payload := Payload} = Report, #{payload_encode := Encode}) ->
     Report#{payload := encode_payload(Payload, Encode)};
-try_encode_payload(Report, _Config) ->
+try_encode_meta(packet, #{packet := Packet} = Report, #{payload_encode := Encode}) when
+    is_tuple(Packet)
+->
+    Report#{packet := emqx_packet:format(Packet, Encode)};
+try_encode_meta(_, Report, _Config) ->
     Report.
 
 encode_payload(Payload, text) ->
@@ -182,4 +195,5 @@ encode_payload(Payload, text) ->
 encode_payload(_Payload, hidden) ->
     "******";
 encode_payload(Payload, hex) ->
-    binary:encode_hex(Payload).
+    Bin = emqx_utils_conv:bin(Payload),
+    binary:encode_hex(Bin).

apps/emqx/src/emqx_packet.erl

@@ -51,7 +51,6 @@
 ]).
 
 -export([
-    format/1,
     format/2
 ]).
 
@@ -481,10 +480,6 @@ will_msg(#mqtt_packet_connect{
         headers = #{username => Username, properties => Props}
     }.
 
-%% @doc Format packet
--spec format(emqx_types:packet()) -> iolist().
-format(Packet) -> format(Packet, emqx_trace_handler:payload_encode()).
-
 %% @doc Format packet
 -spec format(emqx_types:packet(), hex | text | hidden) -> iolist().
 format(#mqtt_packet{header = Header, variable = Variable, payload = Payload}, PayloadEncode) ->

apps/emqx/src/emqx_trace/emqx_trace_formatter.erl

@@ -17,7 +17,6 @@
 -include("emqx_mqtt.hrl").
 
 -export([format/2]).
--export([format_meta_map/1]).
 
 %% logger_formatter:config/0 is not exported.
 -type config() :: map().
@@ -43,10 +42,6 @@ format(
 format(Event, Config) ->
     emqx_logger_textfmt:format(Event, Config).
 
-format_meta_map(Meta) ->
-    Encode = emqx_trace_handler:payload_encode(),
-    format_meta_map(Meta, Encode).
-
 format_meta_map(Meta, Encode) ->
     format_meta_map(Meta, Encode, [
         {packet, fun format_packet/2},

apps/emqx/src/emqx_ws_connection.erl

@@ -820,7 +820,7 @@ serialize_and_inc_stats_fun(#state{serialize = Serialize}) ->
                 ?LOG(warning, #{
                     msg => "packet_discarded",
                     reason => "frame_too_large",
-                    packet => emqx_packet:format(Packet)
+                    packet => Packet
                 }),
                 ok = emqx_metrics:inc('delivery.dropped.too_large'),
                 ok = emqx_metrics:inc('delivery.dropped'),

apps/emqx/test/emqx_packet_SUITE.erl

@@ -377,42 +377,60 @@ t_will_msg(_) ->
 
 t_format(_) ->
     io:format("~ts", [
-        emqx_packet:format(#mqtt_packet{
-            header = #mqtt_packet_header{type = ?CONNACK, retain = true, dup = 0},
-            variable = undefined
-        })
-    ]),
-    io:format("~ts", [
-        emqx_packet:format(#mqtt_packet{
-            header = #mqtt_packet_header{type = ?CONNACK}, variable = 1, payload = <<"payload">>
-        })
+        emqx_packet:format(
+            #mqtt_packet{
+                header = #mqtt_packet_header{type = ?CONNACK, retain = true, dup = 0},
+                variable = undefined
+            },
+            text
+        )
     ]),
+    io:format(
+        "~ts",
+        [
+            emqx_packet:format(
+                #mqtt_packet{
+                    header = #mqtt_packet_header{type = ?CONNACK},
+                    variable = 1,
+                    payload = <<"payload">>
+                },
+                text
+            )
+        ]
+    ),
     io:format("~ts", [
         emqx_packet:format(
-            ?CONNECT_PACKET(#mqtt_packet_connect{
-                will_flag = true,
-                will_retain = true,
-                will_qos = ?QOS_2,
-                will_topic = <<"topic">>,
-                will_payload = <<"payload">>
-            })
+            ?CONNECT_PACKET(
+                #mqtt_packet_connect{
+                    will_flag = true,
+                    will_retain = true,
+                    will_qos = ?QOS_2,
+                    will_topic = <<"topic">>,
+                    will_payload = <<"payload">>
+                }
+            ),
+            text
         )
     ]),
     io:format("~ts", [
-        emqx_packet:format(?CONNECT_PACKET(#mqtt_packet_connect{password = password}))
+        emqx_packet:format(?CONNECT_PACKET(#mqtt_packet_connect{password = password}), text)
+    ]),
+    io:format("~ts", [emqx_packet:format(?CONNACK_PACKET(?CONNACK_SERVER), text)]),
+    io:format("~ts", [emqx_packet:format(?PUBLISH_PACKET(?QOS_1, 1), text)]),
+    io:format("~ts", [
+        emqx_packet:format(?PUBLISH_PACKET(?QOS_2, <<"topic">>, 10, <<"payload">>), text)
     ]),
-    io:format("~ts", [emqx_packet:format(?CONNACK_PACKET(?CONNACK_SERVER))]),
-    io:format("~ts", [emqx_packet:format(?PUBLISH_PACKET(?QOS_1, 1))]),
-    io:format("~ts", [emqx_packet:format(?PUBLISH_PACKET(?QOS_2, <<"topic">>, 10, <<"payload">>))]),
-    io:format("~ts", [emqx_packet:format(?PUBACK_PACKET(?PUBACK, 98))]),
-    io:format("~ts", [emqx_packet:format(?PUBREL_PACKET(99))]),
+    io:format("~ts", [emqx_packet:format(?PUBACK_PACKET(?PUBACK, 98), text)]),
+    io:format("~ts", [emqx_packet:format(?PUBREL_PACKET(99), text)]),
     io:format("~ts", [
-        emqx_packet:format(?SUBSCRIBE_PACKET(15, [{<<"topic">>, ?QOS_0}, {<<"topic1">>, ?QOS_1}]))
+        emqx_packet:format(
+            ?SUBSCRIBE_PACKET(15, [{<<"topic">>, ?QOS_0}, {<<"topic1">>, ?QOS_1}]), text
+        )
     ]),
-    io:format("~ts", [emqx_packet:format(?SUBACK_PACKET(40, [?QOS_0, ?QOS_1]))]),
-    io:format("~ts", [emqx_packet:format(?UNSUBSCRIBE_PACKET(89, [<<"t">>, <<"t2">>]))]),
-    io:format("~ts", [emqx_packet:format(?UNSUBACK_PACKET(90))]),
-    io:format("~ts", [emqx_packet:format(?DISCONNECT_PACKET(128))]).
+    io:format("~ts", [emqx_packet:format(?SUBACK_PACKET(40, [?QOS_0, ?QOS_1]), text)]),
+    io:format("~ts", [emqx_packet:format(?UNSUBSCRIBE_PACKET(89, [<<"t">>, <<"t2">>]), text)]),
+    io:format("~ts", [emqx_packet:format(?UNSUBACK_PACKET(90), text)]),
+    io:format("~ts", [emqx_packet:format(?DISCONNECT_PACKET(128), text)]).
 
 t_parse_empty_publish(_) ->
     %% 52: 0011(type=PUBLISH) 0100 (QoS=2)