fix(dssubs): disable API as well if durable queues are disabled

apps/emqx_ds_shared_sub/src/emqx_ds_shared_sub_api.erl

@@ -16,8 +16,10 @@
 ).
 
 -define(DESC_NOT_FOUND, <<"Queue not found">>).
--define(RESP_NOT_FOUND,
-    {404, #{code => <<"NOT_FOUND">>, message => ?DESC_NOT_FOUND}}
+-define(DESC_DISABLED, <<"Feature is disabled">>).
+-define(RESP_NOT_FOUND, ?RESP_NOT_FOUND(?DESC_NOT_FOUND)).
+-define(RESP_NOT_FOUND(MSG),
+    {404, #{code => <<"NOT_FOUND">>, message => MSG}}
 ).
 
 -define(DESC_CREATE_CONFICT, <<"Queue with given group name and topic filter already exists">>).
@@ -55,13 +57,21 @@
     '/durable_queues/:id'/2
 ]).
 
+%% Internal exports
+-export([
+    check_enabled/2
+]).
+
 -import(hoconsc, [mk/2, ref/1, ref/2]).
 -import(emqx_dashboard_swagger, [error_codes/2]).
 
 namespace() -> "durable_queues".
 
 api_spec() ->
-    emqx_dashboard_swagger:spec(?MODULE, #{check_schema => true}).
+    emqx_dashboard_swagger:spec(?MODULE, #{
+        check_schema => true,
+        filter => fun ?MODULE:check_enabled/2
+    }).
 
 paths() ->
     [
@@ -82,7 +92,8 @@ schema("/durable_queues") ->
             ],
             responses => #{
                 200 => resp_list_durable_queues(),
-                400 => error_codes(['BAD_REQUEST'], ?DESC_BAD_REQUEST)
+                400 => error_codes(['BAD_REQUEST'], ?DESC_BAD_REQUEST),
+                404 => error_codes(['NOT_FOUND'], ?DESC_DISABLED)
             }
         },
         post => #{
@@ -92,7 +103,8 @@ schema("/durable_queues") ->
             'requestBody' => durable_queue_post(),
             responses => #{
                 201 => resp_create_durable_queue(),
-                409 => error_codes(['CONFLICT'], ?DESC_CREATE_CONFICT)
+                409 => error_codes(['CONFLICT'], ?DESC_CREATE_CONFICT),
+                404 => error_codes(['NOT_FOUND'], ?DESC_DISABLED)
             }
         }
     };
@@ -125,6 +137,12 @@ schema("/durable_queues/:id") ->
         }
     }.
 
+check_enabled(Request, _ReqMeta) ->
+    case emqx_ds_shared_sub_config:enabled() of
+        true -> {ok, Request};
+        false -> ?RESP_NOT_FOUND(<<"Durable queues are disabled">>)
+    end.
+
 '/durable_queues'(get, #{query_string := QString}) ->
     Cursor = maps:get(<<"cursor">>, QString, undefined),
     Limit = maps:get(<<"limit">>, QString),

apps/emqx_ds_shared_sub/test/emqx_ds_shared_sub_api_SUITE.erl

@@ -55,11 +55,12 @@ end_per_suite(Config) ->
     ok = emqx_cth_suite:stop(?config(apps, Config)),
     ok.
 
-init_per_testcase(_TC, Config) ->
+init_per_testcase(TC, Config) ->
     ok = snabbkaffe:start_trace(),
-    Config.
+    emqx_common_test_helpers:init_per_testcase(?MODULE, TC, Config).
 
-end_per_testcase(_TC, _Config) ->
+end_per_testcase(TC, Config) ->
+    _ = emqx_common_test_helpers:end_per_testcase(?MODULE, TC, Config),
     ok = snabbkaffe:stop(),
     ok = emqx_ds_shared_sub_registry:purge(),
     ok = destroy_queues(),
@@ -244,6 +245,21 @@ t_duplicate_queue(_Config) ->
         })
     ).
 
+t_404_when_disable('init', Config) ->
+    {ok, _} = emqx_conf:update([durable_queues], #{<<"enable">> => false}, #{}),
+    Config;
+t_404_when_disable('end', _Config) ->
+    {ok, _} = emqx_conf:update([durable_queues], #{<<"enable">> => true}, #{}).
+
+t_404_when_disable(_Config) ->
+    ?assertMatch(
+        {ok, 404, #{}},
+        api(post, ["durable_queues"], #{
+            <<"group">> => <<"disabled">>,
+            <<"topic">> => <<"#">>
+        })
+    ).
+
 %%--------------------------------------------------------------------
 
 destroy_queues() ->