fix(connector api): handle bad tls config file conversion errors

Fixes https://emqx.atlassian.net/browse/EMQX-12581

apps/emqx_bridge_rocketmq/test/emqx_bridge_rocketmq_SUITE.erl

@@ -62,7 +62,9 @@ init_per_group(_Group, Config) ->
 end_per_group(Group, Config) when Group =:= with_batch; Group =:= without_batch ->
     ProxyHost = ?config(proxy_host, Config),
     ProxyPort = ?config(proxy_port, Config),
+    Apps = ?config(apps, Config),
     emqx_common_test_helpers:reset_proxy(ProxyHost, ProxyPort),
+    emqx_cth_suite:stop(Apps),
     ok;
 end_per_group(_Group, _Config) ->
     ok.
@@ -109,22 +111,24 @@ common_init(ConfigT) ->
             ProxyHost = os:getenv("PROXY_HOST", "toxiproxy"),
             ProxyPort = list_to_integer(os:getenv("PROXY_PORT", "8474")),
             emqx_common_test_helpers:reset_proxy(ProxyHost, ProxyPort),
-            % Ensure enterprise bridge module is loaded
+            Apps = emqx_cth_suite:start(
-            ok = emqx_common_test_helpers:start_apps([
+                [
-                emqx_conf, emqx_resource, emqx_bridge, rocketmq
+                    emqx,
-            ]),
+                    emqx_conf,
-            _ = emqx_bridge_enterprise:module_info(),
+                    emqx_connector,
-            emqx_mgmt_api_test_util:init_suite(),
+                    emqx_bridge_rocketmq,
+                    emqx_bridge,
+                    emqx_rule_engine,
+                    emqx_management,
+                    emqx_mgmt_api_test_util:emqx_dashboard()
+                ],
+                #{work_dir => emqx_cth_suite:work_dir(Config0)}
+            ),
             {Name, RocketMQConf} = rocketmq_config(BridgeType, Config0),
-            RocketMQSSLConf = RocketMQConf#{
+            RocketMQSSLConf = rocketmq_ssl_config(RocketMQConf, Config0),
-                <<"servers">> => <<"rocketmq_namesrv_ssl:9876">>,
-                <<"ssl">> => #{
-                    <<"enable">> => true,
-                    <<"verify">> => verify_none
-                }
-            },
             Config =
                 [
+                    {apps, Apps},
                     {rocketmq_config, RocketMQConf},
                     {rocketmq_config_ssl, RocketMQSSLConf},
                     {rocketmq_bridge_type, BridgeType},
@@ -143,6 +147,24 @@ common_init(ConfigT) ->
             end
     end.
 
+rocketmq_ssl_config(NonSSLConfig, _TCConfig) ->
+    %% TODO: generate fixed files for server and client to actually test TLS...
+    %% DataDir = ?config(data_dir, TCConfig),
+    %% emqx_test_tls_certs_helper:generate_tls_certs(TCConfig),
+    %% Keyfile = filename:join([DataDir, "client1.key"]),
+    %% Certfile = filename:join([DataDir, "client1.pem"]),
+    %% CACertfile = filename:join([DataDir, "intermediate1.pem"]),
+    NonSSLConfig#{
+        <<"servers">> => <<"rocketmq_namesrv_ssl:9876">>,
+        <<"ssl">> => #{
+            %% <<"keyfile">> => iolist_to_binary(Keyfile),
+            %% <<"certfile">> => iolist_to_binary(Certfile),
+            %% <<"cacertfile">> => iolist_to_binary(CACertfile),
+            <<"enable">> => true,
+            <<"verify">> => <<"verify_none">>
+        }
+    }.
+
 rocketmq_config(BridgeType, Config) ->
     Port = integer_to_list(?GET_CONFIG(port, Config)),
     Server = ?GET_CONFIG(host, Config) ++ ":" ++ Port,
@@ -174,13 +196,7 @@ rocketmq_config(BridgeType, Config) ->
                 QueryMode
             ]
         ),
-    {Name, parse_and_check(ConfigString, BridgeType, Name)}.
+    {Name, emqx_bridge_testlib:parse_and_check(BridgeType, Name, ConfigString)}.
-
-parse_and_check(ConfigString, BridgeType, Name) ->
-    {ok, RawConf} = hocon:binary(ConfigString, #{format => map}),
-    hocon_tconf:check_plain(emqx_bridge_schema, RawConf, #{required => false, atom_key => false}),
-    #{<<"bridges">> := #{BridgeType := #{Name := Config}}} = RawConf,
-    Config.
 
 create_bridge(Config) ->
     BridgeType = ?GET_CONFIG(rocketmq_bridge_type, Config),
@@ -192,7 +208,11 @@ create_bridge_ssl(Config) ->
     BridgeType = ?GET_CONFIG(rocketmq_bridge_type, Config),
     Name = ?GET_CONFIG(rocketmq_name, Config),
     RocketMQConf = ?GET_CONFIG(rocketmq_config_ssl, Config),
-    emqx_bridge:create(BridgeType, Name, RocketMQConf).
+    emqx_bridge_testlib:create_bridge_api([
+        {bridge_type, BridgeType},
+        {bridge_name, Name},
+        {bridge_config, RocketMQConf}
+    ]).
 
 create_bridge_ssl_bad_ssl_opts(Config) ->
     BridgeType = ?GET_CONFIG(rocketmq_bridge_type, Config),

apps/emqx_bridge_s3/src/emqx_bridge_s3.erl

@@ -121,8 +121,8 @@ pre_config_update(Path, _Name, Conf = #{<<"transport_options">> := TransportOpts
     case emqx_connector_ssl:convert_certs(filename:join(Path), TransportOpts) of
         {ok, NTransportOpts} ->
             {ok, Conf#{<<"transport_options">> := NTransportOpts}};
-        {error, {bad_ssl_config, Error}} ->
+        {error, Error} ->
-            {error, Error#{reason => <<"bad_ssl_config">>}}
+            {error, Error}
     end;
 pre_config_update(_Path, _Name, Conf, _ConfOld) ->
     {ok, Conf}.

apps/emqx_connector/src/emqx_connector.app.src

@@ -1,7 +1,7 @@
 %% -*- mode: erlang -*-
 {application, emqx_connector, [
     {description, "EMQX Data Integration Connectors"},
-    {vsn, "0.3.2"},
+    {vsn, "0.3.3"},
     {registered, []},
     {mod, {emqx_connector_app, []}},
     {applications, [

apps/emqx_connector/src/emqx_connector.erl

@@ -352,7 +352,7 @@ convert_certs(ConnectorsConf) ->
                                 name => Name,
                                 reason => Reason
                             }),
-                            throw({bad_ssl_config, Reason});
+                            throw(Reason);
                         {ok, ConnectorConf1} ->
                             ConnectorConf1
                     end

apps/emqx_connector/src/emqx_connector_ssl.erl

@@ -35,7 +35,7 @@ new_ssl_config(RltvDir, Config, SSL) ->
         {ok, NewSSL} ->
             {ok, new_ssl_config(Config, NewSSL)};
         {error, Reason} ->
-            {error, {bad_ssl_config, Reason}}
+            {error, map_bad_ssl_error(Reason)}
     end.
 
 new_ssl_config(#{connector := Connector} = Config, NewSSL) ->
@@ -48,3 +48,25 @@ new_ssl_config(#{<<"ssl">> := _} = Config, NewSSL) ->
     Config#{<<"ssl">> => NewSSL};
 new_ssl_config(Config, _NewSSL) ->
     Config.
+
+map_bad_ssl_error(#{pem_check := invalid_pem} = TLSLibError) ->
+    #{which_options := Paths, file_read := Reason} = TLSLibError,
+    #{
+        kind => validation_error,
+        reason => <<"bad_ssl_config">>,
+        bad_fields => Paths,
+        file_read_error => Reason
+    };
+map_bad_ssl_error(#{which_options := Paths, reason := Reason}) ->
+    #{
+        kind => validation_error,
+        reason => <<"bad_ssl_config">>,
+        bad_fields => Paths,
+        details => Reason
+    };
+map_bad_ssl_error(TLSLibError) ->
+    #{
+        kind => validation_error,
+        reason => <<"bad_ssl_config">>,
+        details => TLSLibError
+    }.

apps/emqx_connector/test/emqx_connector_api_SUITE.erl

@@ -718,6 +718,37 @@ t_create_with_bad_name(Config) ->
     ?assertMatch(#{<<"kind">> := <<"validation_error">>}, Msg),
     ok.
 
+%% Checks that we correctly handle `throw({bad_ssl_config, _})' from
+%% `emqx_connector:convert_certs' and massage the error message accordingly.
+t_create_with_bad_tls_files(Config) ->
+    ConnectorName = atom_to_binary(?FUNCTION_NAME),
+    Conf0 = ?KAFKA_CONNECTOR(ConnectorName),
+    Conf = Conf0#{<<"ssl">> => #{<<"cacertfile">> => <<"bad_pem_file">>}},
+    ?check_trace(
+        begin
+            {ok, 400, #{
+                <<"message">> := Msg0
+            }} = request_json(
+                post,
+                uri(["connectors"]),
+                Conf,
+                Config
+            ),
+            ?assertMatch(
+                #{
+                    <<"kind">> := <<"validation_error">>,
+                    <<"reason">> := <<"bad_ssl_config">>,
+                    <<"file_read_error">> := <<"enoent">>,
+                    <<"bad_fields">> := [[<<"cacertfile">>]]
+                },
+                json(Msg0)
+            ),
+            ok
+        end,
+        []
+    ),
+    ok.
+
 t_actions_field(Config) ->
     Name = ?CONNECTOR_NAME,
     ?assertMatch(