test: add test for emqx_conf:update([log], Conf)

apps/emqx_conf/src/emqx_conf.app.src

@@ -1,6 +1,6 @@
 {application, emqx_conf, [
     {description, "EMQX configuration management"},
-    {vsn, "0.1.21"},
+    {vsn, "0.1.22"},
     {registered, []},
     {mod, {emqx_conf_app, []}},
     {applications, [kernel, stdlib, emqx_ctl]},

apps/emqx_conf/src/emqx_conf_schema.erl

@@ -1365,6 +1365,7 @@ ensure_file_handlers(Conf, _Opts) ->
     ),
     HandlersWithoutName = maps:with(FileFields, Conf),
     HandlersWithName = maps:without(FileFields, Conf),
+    %% Make sure the handler with name is high priority than the handler without name
     emqx_utils_maps:deep_merge(#{<<"default">> => HandlersWithoutName}, HandlersWithName).
 
 convert_rotation(undefined, _Opts) -> undefined;

apps/emqx_conf/test/emqx_conf_logger_SUITE.erl

@@ -0,0 +1,111 @@
+%%--------------------------------------------------------------------
+%% Copyright (c) 2023 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_conf_logger_SUITE).
+
+-compile(nowarn_export_all).
+-compile(export_all).
+
+-include_lib("eunit/include/eunit.hrl").
+-include_lib("snabbkaffe/include/snabbkaffe.hrl").
+
+%% erlfmt-ignore
+-define(BASE_CONF,
+    """
+             node {
+                name = \"emqx1@127.0.0.1\"
+                cookie = \"emqxsecretcookie\"
+                data_dir = \"data\"
+             }
+             cluster {
+                name = emqxcl
+                discovery_strategy = static
+                static.seeds = \"emqx1@127.0.0.1\"
+                core_nodes = \"emqx1@127.0.0.1\"
+             }
+             log {
+                console {
+                enable = true
+                level = debug
+                }
+                file {
+                enable = true
+                level = info
+                to = \"log/emqx.log\"
+                }
+             }
+    """).
+
+all() ->
+    emqx_common_test_helpers:all(?MODULE).
+
+init_per_suite(Config) ->
+    emqx_common_test_helpers:load_config(emqx_conf_schema, iolist_to_binary(?BASE_CONF)),
+    emqx_mgmt_api_test_util:init_suite([emqx_conf]),
+    Config.
+
+end_per_suite(_Config) ->
+    emqx_mgmt_api_test_util:end_suite([emqx_conf]).
+
+t_log_conf(_Conf) ->
+    FileExpect = #{
+        <<"enable">> => true,
+        <<"formatter">> => text,
+        <<"level">> => <<"info">>,
+        <<"rotation_count">> => 10,
+        <<"rotation_size">> => <<"50MB">>,
+        <<"time_offset">> => <<"system">>,
+        <<"to">> => <<"log/emqx.log">>
+    },
+    ExpectLog1 = #{
+        <<"console">> =>
+            #{
+                <<"enable">> => true,
+                <<"formatter">> => text,
+                <<"level">> => <<"debug">>,
+                <<"time_offset">> => <<"system">>
+            },
+        <<"file">> =>
+            #{<<"default">> => FileExpect}
+    },
+    ?assertEqual(ExpectLog1, emqx_conf:get_raw([<<"log">>])),
+    UpdateLog0 = emqx_utils_maps:deep_remove([<<"file">>, <<"default">>], ExpectLog1),
+    UpdateLog1 = emqx_utils_maps:deep_merge(
+        UpdateLog0,
+        #{
+            <<"console">> => #{<<"level">> => <<"info">>},
+            <<"file">> => FileExpect#{<<"level">> => <<"error">>}
+        }
+    ),
+    ?assertMatch({ok, _}, emqx_conf:update([<<"log">>], UpdateLog1, #{})),
+    ?assertMatch(
+        {ok, #{config := #{file := "log/emqx.log"}, level := error}},
+        logger:get_handler_config(default)
+    ),
+    ?assertMatch(
+        {ok, #{config := #{type := standard_io}, level := info, module := logger_std_h}},
+        logger:get_handler_config(console)
+    ),
+    UpdateLog2 = emqx_utils_maps:deep_merge(
+        UpdateLog1,
+        #{
+            <<"console">> => #{<<"enable">> => false},
+            <<"file">> => FileExpect#{<<"enable">> => false}
+        }
+    ),
+    ?assertMatch({ok, _}, emqx_conf:update([<<"log">>], UpdateLog2, #{})),
+    ?assertMatch({error, {not_found, default}}, logger:get_handler_config(default)),
+    ?assertMatch({error, {not_found, console}}, logger:get_handler_config(console)),
+    ok.