refactor: read avsc file when make serde

apps/emqx_plugins/src/emqx_plugins.erl

@@ -1012,22 +1012,15 @@ maybe_post_op_after_install(NameVsn) ->
     ok.
 
 maybe_load_config_schema(NameVsn) ->
-    filelib:is_regular(avsc_file_path(NameVsn)) andalso
-        do_load_config_schema(NameVsn).
+    AvscPath = avsc_file_path(NameVsn),
+    filelib:is_regular(AvscPath) andalso
+        do_load_config_schema(NameVsn, AvscPath).
 
-do_load_config_schema(NameVsn) ->
-    case read_plugin_avsc(NameVsn, #{read_mode => ?RAW_BIN}) of
-        {ok, AvscBin} ->
-            case emqx_plugins_serde:add_schema(NameVsn, AvscBin) of
+do_load_config_schema(NameVsn, AvscPath) ->
+    case emqx_plugins_serde:add_schema(NameVsn, AvscPath) of
         ok -> ok;
         {error, already_exists} -> ok;
         {error, _Reason} -> ok
-            end;
-        {error, Reason} ->
-            ?SLOG(warning, #{
-                msg => "failed_to_read_plugin_avsc", reason => Reason, name_vsn => NameVsn
-            }),
-            ok
     end.
 
 maybe_create_config_dir(NameVsn) ->

apps/emqx_plugins/src/emqx_plugins_serde.erl

@@ -59,20 +59,20 @@ lookup_serde(SchemaName) ->
     end.
 
 -spec add_schema(schema_name(), avsc()) -> ok | {error, term()}.
-add_schema(Name, Avsc) ->
-    case lookup_serde(Name) of
+add_schema(NameVsn, Path) ->
+    case lookup_serde(NameVsn) of
         {ok, _Serde} ->
-            ?SLOG(warning, #{msg => "plugin_schema_already_exists", plugin => Name}),
+            ?SLOG(warning, #{msg => "plugin_schema_already_exists", plugin => NameVsn}),
             {error, already_exists};
         {error, not_found} ->
-            case gen_server:call(?MODULE, {build_serdes, to_bin(Name), Avsc}, infinity) of
+            case gen_server:call(?MODULE, {build_serdes, to_bin(NameVsn), Path}, infinity) of
                 ok ->
-                    ?SLOG(debug, #{msg => "plugin_schema_added", plugin => Name}),
+                    ?SLOG(debug, #{msg => "plugin_schema_added", plugin => NameVsn}),
                     ok;
                 {error, Reason} = E ->
                     ?SLOG(error, #{
                         msg => "plugin_schema_add_failed",
-                        plugin => Name,
+                        plugin => NameVsn,
                         reason => emqx_utils:readable_error_msg(Reason)
                     }),
                     E
@@ -123,15 +123,15 @@ init(_) ->
         public, ordered_set, {keypos, #plugin_schema_serde.name}
     ]),
     State = #{},
-    SchemasMap = read_plugin_avsc(),
-    {ok, State, {continue, {build_serdes, SchemasMap}}}.
+    AvscPaths = get_plugin_avscs(),
+    {ok, State, {continue, {build_serdes, AvscPaths}}}.
 
-handle_continue({build_serdes, SchemasMap}, State) ->
-    _ = build_serdes(SchemasMap),
+handle_continue({build_serdes, AvscPaths}, State) ->
+    _ = build_serdes(AvscPaths),
     {noreply, State}.
 
-handle_call({build_serdes, NameVsn, Avsc}, _From, State) ->
-    BuildRes = do_build_serde(NameVsn, Avsc),
+handle_call({build_serdes, NameVsn, AvscPath}, _From, State) ->
+    BuildRes = do_build_serde({NameVsn, AvscPath}),
     {reply, BuildRes, State};
 handle_call(_Call, _From, State) ->
     {reply, {error, unknown_call}, State}.
@@ -149,29 +149,24 @@ terminate(_Reason, _State) ->
 %% Internal fns
 %%-------------------------------------------------------------------------------------------------
 
-read_plugin_avsc() ->
+-spec get_plugin_avscs() -> [{string(), string()}].
+get_plugin_avscs() ->
     Pattern = filename:join([emqx_plugins:install_dir(), "*", "config_schema.avsc"]),
     lists:foldl(
         fun(AvscPath, AccIn) ->
-            case read_avsc_file(AvscPath) of
-                {ok, Avsc} ->
             [_, NameVsn | _] = lists:reverse(filename:split(AvscPath)),
-                    AccIn#{to_bin(NameVsn) => Avsc};
-                {error, Reason} ->
-                    ?SLOG(warning, Reason),
-                    AccIn
-            end
+            [{NameVsn, AvscPath} | AccIn]
         end,
-        _Acc0 = #{},
+        _Acc0 = [],
         filelib:wildcard(Pattern)
     ).
 
-build_serdes(Schemas) ->
-    maps:foreach(fun do_build_serde/2, Schemas).
+build_serdes(AvscPaths) ->
+    ok = lists:foreach(fun do_build_serde/1, AvscPaths).
 
-do_build_serde(NameVsn, Avsc) ->
+do_build_serde({NameVsn, AvscPath}) ->
     try
-        Serde = make_serde(NameVsn, Avsc),
+        Serde = make_serde(NameVsn, AvscPath),
         true = ets:insert(?PLUGIN_SERDE_TAB, Serde),
         ok
     catch
@@ -189,11 +184,12 @@ do_build_serde(NameVsn, Avsc) ->
             {error, Error}
     end.
 
-make_serde(NameVsn, Avsc) ->
+make_serde(NameVsn, AvscPath) ->
+    {ok, AvscBin} = read_avsc_file(AvscPath),
     Store0 = avro_schema_store:new([map]),
     %% import the schema into the map store with an assigned name
     %% if it's a named schema (e.g. struct), then Name is added as alias
-    Store = avro_schema_store:import_schema_json(NameVsn, Avsc, Store0),
+    Store = avro_schema_store:import_schema_json(NameVsn, AvscBin, Store0),
     #plugin_schema_serde{
         name = NameVsn,
         eval_context = Store