Merge remote-tracking branch 'upstream/master' into refactor-gw-dir

.ci/docker-compose-file/cassandra/cassandra.yaml

@@ -469,8 +469,8 @@ concurrent_materialized_view_writes: 32
 # accepting writes when the limit is exceeded until a flush completes,
 # and will trigger a flush based on memtable_cleanup_threshold
 # If omitted, Cassandra will set both to 1/4 the size of the heap.
-# memtable_heap_space_in_mb: 2048
+memtable_heap_space_in_mb: 2048
-# memtable_offheap_space_in_mb: 2048
+memtable_offheap_space_in_mb: 2048
 
 # memtable_cleanup_threshold is deprecated. The default calculation
 # is the only reasonable choice. See the comments on  memtable_flush_writers

.ci/docker-compose-file/docker-compose-cassandra.yaml

@@ -12,6 +12,8 @@ services:
     environment:
       CASSANDRA_BROADCAST_ADDRESS: "1.2.3.4"
       CASSANDRA_RPC_ADDRESS: "0.0.0.0"
+      HEAP_NEWSIZE: "128M"
+      MAX_HEAP_SIZE: "2048M"
     volumes:
       - ./certs:/certs
     #ports:

Makefile

@@ -82,7 +82,7 @@ ct: $(REBAR) merge-config
 static_checks:
 	@$(REBAR) as check do xref, dialyzer
 	@if [ "$${PROFILE}" = 'emqx-enterprise' ]; then $(REBAR) ct --suite apps/emqx/test/emqx_static_checks --readable $(CT_READABLE); fi
-	@if [ "$${PROFILE}" = 'emqx-enterprise' ]; then ./scripts/check-i18n-style.sh; fi
+	./scripts/check-i18n-style.sh
 
 APPS=$(shell $(SCRIPTS)/find-apps.sh)
 

apps/emqx/include/emqx_release.hrl

@@ -35,7 +35,7 @@
 -define(EMQX_RELEASE_CE, "5.0.21").
 
 %% Enterprise edition
--define(EMQX_RELEASE_EE, "5.0.2-rc.2").
+-define(EMQX_RELEASE_EE, "5.0.2-rc.4").
 
 %% the HTTP API version
 -define(EMQX_API_VERSION, "5.0").

apps/emqx/src/emqx_schema.erl

@@ -1880,7 +1880,9 @@ mqtt_listener(Bind) ->
                         default => <<"3s">>
                     }
                 )},
-            {?EMQX_AUTHENTICATION_CONFIG_ROOT_NAME, authentication(listener)}
+            {?EMQX_AUTHENTICATION_CONFIG_ROOT_NAME, (authentication(listener))#{
+                importance => ?IMPORTANCE_HIDDEN
+            }}
         ].
 
 base_listener(Bind) ->

apps/emqx/test/emqx_banned_SUITE.erl

@@ -154,7 +154,12 @@ t_session_taken(_) ->
             {clean_start, false},
             {properties, #{'Session-Expiry-Interval' => 120}}
         ]),
-        {ok, _} = emqtt:connect(C),
+        case emqtt:connect(C) of
+            {ok, _} ->
+                ok;
+            {error, econnrefused} ->
+                throw(mqtt_listener_not_ready)
+        end,
         {ok, _, [0]} = emqtt:subscribe(C, Topic, []),
         C
     end,
@@ -168,9 +173,21 @@ t_session_taken(_) ->
             lists:seq(1, MsgNum)
         )
     end,
-
+    emqx_common_test_helpers:wait_for(
-    C1 = Connect(),
+        ?FUNCTION_NAME,
-    ok = emqtt:disconnect(C1),
+        ?LINE,
+        fun() ->
+            try
+                C = Connect(),
+                emqtt:disconnect(C),
+                true
+            catch
+                throw:mqtt_listener_not_ready ->
+                    false
+            end
+        end,
+        3000
+    ),
 
     Publish(),
 

apps/emqx/test/emqx_common_test_helpers.erl

@@ -660,6 +660,7 @@ start_slave(Name, Opts) when is_list(Opts) ->
 start_slave(Name, Opts) when is_map(Opts) ->
     SlaveMod = maps:get(peer_mod, Opts, ct_slave),
     Node = node_name(Name),
+    put_peer_mod(Node, SlaveMod),
     DoStart =
         fun() ->
             case SlaveMod of
@@ -669,8 +670,8 @@ start_slave(Name, Opts) when is_map(Opts) ->
                         [
                             {kill_if_fail, true},
                             {monitor_master, true},
-                            {init_timeout, 10000},
+                            {init_timeout, 20_000},
-                            {startup_timeout, 10000},
+                            {startup_timeout, 20_000},
                             {erl_flags, erl_flags()}
                         ]
                     );
@@ -687,7 +688,6 @@ start_slave(Name, Opts) when is_map(Opts) ->
             throw(Other)
     end,
     pong = net_adm:ping(Node),
-    put_peer_mod(Node, SlaveMod),
     setup_node(Node, Opts),
     ok = snabbkaffe:forward_trace(Node),
     Node.

apps/emqx/test/emqx_crl_cache_SUITE.erl

@@ -884,7 +884,20 @@ t_revoked(Config) ->
         {port, 8883}
     ]),
     process_flag(trap_exit, true),
-    ?assertMatch({error, {{shutdown, {tls_alert, {certificate_revoked, _}}}, _}}, emqtt:connect(C)),
+    Res = emqtt:connect(C),
+    %% apparently, sometimes there's some race condition in
+    %% `emqtt_sock:ssl_upgrade' when it calls
+    %% `ssl:conetrolling_process' and a bad match happens at that
+    %% point.
+    case Res of
+        {error, {{shutdown, {tls_alert, {certificate_revoked, _}}}, _}} ->
+            ok;
+        {error, closed} ->
+            %% race condition?
+            ok;
+        _ ->
+            ct:fail("unexpected result: ~p", [Res])
+    end,
     ok.
 
 t_revoke_then_refresh(Config) ->

apps/emqx/test/emqx_test_janitor.erl

@@ -65,7 +65,7 @@ terminate(_Reason, #{callbacks := Callbacks}) ->
 handle_call({push, Callback}, _From, State = #{callbacks := Callbacks}) ->
     {reply, ok, State#{callbacks := [Callback | Callbacks]}};
 handle_call(terminate, _From, State = #{callbacks := Callbacks}) ->
-    lists:foreach(fun(Fun) -> Fun() end, Callbacks),
+    lists:foreach(fun(Fun) -> catch Fun() end, Callbacks),
     {stop, normal, ok, State};
 handle_call(_Req, _From, State) ->
     {reply, error, State}.

apps/emqx_authn/src/emqx_authn.app.src

@@ -1,7 +1,7 @@
 %% -*- mode: erlang -*-
 {application, emqx_authn, [
     {description, "EMQX Authentication"},
-    {vsn, "0.1.15"},
+    {vsn, "0.1.16"},
     {modules, []},
     {registered, [emqx_authn_sup, emqx_authn_registry]},
     {applications, [kernel, stdlib, emqx_resource, emqx_connector, ehttpc, epgsql, mysql, jose]},

apps/emqx_authn/src/emqx_authn_api.erl

@@ -1419,14 +1419,14 @@ request_user_create_examples() ->
             summary => <<"Regular user">>,
             value => #{
                 user_id => <<"user1">>,
-                password => <<"secret">>
+                password => <<"******">>
             }
         },
         super_user => #{
             summary => <<"Superuser">>,
             value => #{
                 user_id => <<"user2">>,
-                password => <<"secret">>,
+                password => <<"******">>,
                 is_superuser => true
             }
         }
@@ -1437,13 +1437,13 @@ request_user_update_examples() ->
         regular_user => #{
             summary => <<"Update regular user">>,
             value => #{
-                password => <<"newsecret">>
+                password => <<"******">>
             }
         },
         super_user => #{
             summary => <<"Update user and promote to superuser">>,
             value => #{
-                password => <<"newsecret">>,
+                password => <<"******">>,
                 is_superuser => true
             }
         }

apps/emqx_authz/src/emqx_authz.app.src

@@ -1,7 +1,7 @@
 %% -*- mode: erlang -*-
 {application, emqx_authz, [
     {description, "An OTP application"},
-    {vsn, "0.1.15"},
+    {vsn, "0.1.16"},
     {registered, []},
     {mod, {emqx_authz_app, []}},
     {applications, [

apps/emqx_authz/src/emqx_authz_schema.erl

@@ -492,7 +492,9 @@ authz_fields() ->
                 ?ARRAY(?UNION(UnionMemberSelector)),
                 #{
                     default => [],
-                    desc => ?DESC(sources)
+                    desc => ?DESC(sources),
+                    %% doc_lift is force a root level reference instead of nesting sub-structs
+                    extra => #{doc_lift => true}
                 }
             )}
     ].

apps/emqx_bridge/src/emqx_bridge_api.erl

@@ -235,7 +235,7 @@ mqtt_main_example() ->
         server => <<"127.0.0.1:1883">>,
         proto_ver => <<"v4">>,
         username => <<"foo">>,
-        password => <<"bar">>,
+        password => <<"******">>,
         clean_start => true,
         keepalive => <<"300s">>,
         retry_interval => <<"15s">>,

apps/emqx_conf/src/emqx_cluster_rpc.erl

@@ -270,9 +270,6 @@ fast_forward_to_commit(Node, ToTnxId) ->
 
 %% @private
 init([Node, RetryMs]) ->
-    %% Workaround for https://github.com/emqx/mria/issues/94:
-    _ = mria_rlog:wait_for_shards([?CLUSTER_RPC_SHARD], 1000),
-    _ = mria:wait_for_tables([?CLUSTER_MFA, ?CLUSTER_COMMIT]),
     {ok, _} = mnesia:subscribe({table, ?CLUSTER_MFA, simple}),
     State = #{node => Node, retry_interval => RetryMs},
     %% The init transaction ID is set in emqx_conf_app after
@@ -286,6 +283,9 @@ init([Node, RetryMs]) ->
 
 %% @private
 handle_continue(?CATCH_UP, State) ->
+    %% emqx app must be started before
+    %% trying to catch up the rpc commit logs
+    ok = wait_for_emqx_ready(),
     {noreply, State, catch_up(State)}.
 
 handle_call(reset, _From, State) ->
@@ -572,3 +572,37 @@ maybe_init_tnx_id(_Node, TnxId) when TnxId < 0 -> ok;
 maybe_init_tnx_id(Node, TnxId) ->
     {atomic, _} = transaction(fun ?MODULE:commit/2, [Node, TnxId]),
     ok.
+
+%% @priv Cannot proceed until emqx app is ready.
+%% Otherwise the committed transaction catch up may fail.
+wait_for_emqx_ready() ->
+    %% wait 10 seconds for emqx to start
+    ok = do_wait_for_emqx_ready(10).
+
+%% Wait for emqx app to be ready,
+%% write a log message every 1 second
+do_wait_for_emqx_ready(0) ->
+    timeout;
+do_wait_for_emqx_ready(N) ->
+    %% check interval is 100ms
+    %% makes the total wait time 1 second
+    case do_wait_for_emqx_ready2(10) of
+        ok ->
+            ok;
+        timeout ->
+            ?SLOG(warning, #{msg => "stil_waiting_for_emqx_app_to_be_ready"}),
+            do_wait_for_emqx_ready(N - 1)
+    end.
+
+%% Wait for emqx app to be ready,
+%% check interval is 100ms
+do_wait_for_emqx_ready2(0) ->
+    timeout;
+do_wait_for_emqx_ready2(N) ->
+    case emqx:is_running() of
+        true ->
+            ok;
+        false ->
+            timer:sleep(100),
+            do_wait_for_emqx_ready2(N - 1)
+    end.

apps/emqx_conf/src/emqx_cluster_rpc_cleaner.erl

@@ -13,7 +13,9 @@
 %% See the License for the specific language governing permissions and
 %% limitations under the License.
 %%--------------------------------------------------------------------
--module(emqx_cluster_rpc_handler).
+
+%% @doc This module is responsible for cleaning up the cluster RPC MFA.
+-module(emqx_cluster_rpc_cleaner).
 
 -behaviour(gen_server).
 

apps/emqx_conf/src/emqx_conf_app.erl

@@ -95,19 +95,22 @@ init_load() ->
 -endif.
 
 init_conf() ->
+    %% Workaround for https://github.com/emqx/mria/issues/94:
+    _ = mria_rlog:wait_for_shards([?CLUSTER_RPC_SHARD], 1000),
+    _ = mria:wait_for_tables([?CLUSTER_MFA, ?CLUSTER_COMMIT]),
     {ok, TnxId} = copy_override_conf_from_core_node(),
     _ = emqx_app:set_init_tnx_id(TnxId),
     ok = init_load(),
     ok = emqx_app:set_init_config_load_done().
 
 cluster_nodes() ->
-    maps:get(running_nodes, ekka_cluster:info()) -- [node()].
+    mria:cluster_nodes(cores) -- [node()].
 
 copy_override_conf_from_core_node() ->
     case cluster_nodes() of
         %% The first core nodes is self.
         [] ->
-            ?SLOG(debug, #{msg => "skip_copy_overide_conf_from_core_node"}),
+            ?SLOG(debug, #{msg => "skip_copy_override_conf_from_core_node"}),
             {ok, ?DEFAULT_INIT_TXN_ID};
         Nodes ->
             {Results, Failed} = emqx_conf_proto_v2:get_override_config_file(Nodes),
@@ -141,7 +144,7 @@ copy_override_conf_from_core_node() ->
                             %% finish the boot sequence and load the
                             %% config for other nodes to copy it.
                             ?SLOG(info, #{
-                                msg => "skip_copy_overide_conf_from_core_node",
+                                msg => "skip_copy_override_conf_from_core_node",
                                 loading_from_disk => true,
                                 nodes => Nodes,
                                 failed => Failed,
@@ -153,7 +156,7 @@ copy_override_conf_from_core_node() ->
                             Jitter = rand:uniform(2_000),
                             Timeout = 10_000 + Jitter,
                             ?SLOG(info, #{
-                                msg => "copy_overide_conf_from_core_node_retry",
+                                msg => "copy_override_conf_from_core_node_retry",
                                 timeout => Timeout,
                                 nodes => Nodes,
                                 failed => Failed,
@@ -166,7 +169,7 @@ copy_override_conf_from_core_node() ->
                     [{ok, Info} | _] = lists:sort(fun conf_sort/2, Ready),
                     #{node := Node, conf := RawOverrideConf, tnx_id := TnxId} = Info,
                     ?SLOG(debug, #{
-                        msg => "copy_overide_conf_from_core_node_success",
+                        msg => "copy_override_conf_from_core_node_success",
                         node => Node,
                         cluster_override_conf_file => application:get_env(
                             emqx, cluster_override_conf_file

apps/emqx_conf/src/emqx_conf_sup.erl

@@ -36,7 +36,7 @@ init([]) ->
     ChildSpecs =
         [
             child_spec(emqx_cluster_rpc, []),
-            child_spec(emqx_cluster_rpc_handler, [])
+            child_spec(emqx_cluster_rpc_cleaner, [])
         ],
     {ok, {SupFlags, ChildSpecs}}.
 

apps/emqx_conf/test/emqx_cluster_rpc_SUITE.erl

@@ -43,6 +43,7 @@ groups() -> [].
 init_per_suite(Config) ->
     application:load(emqx_conf),
     ok = ekka:start(),
+    ok = emqx_common_test_helpers:start_apps([]),
     ok = mria_rlog:wait_for_shards([?CLUSTER_RPC_SHARD], infinity),
     ok = emqx_config:put([node, cluster_call, retry_interval], 1000),
     meck:new(emqx_alarm, [non_strict, passthrough, no_link]),
@@ -53,6 +54,7 @@ init_per_suite(Config) ->
     Config.
 
 end_per_suite(_Config) ->
+    ok = emqx_common_test_helpers:stop_apps([]),
     ekka:stop(),
     mria:stop(),
     meck:unload(mria),
@@ -255,13 +257,13 @@ t_fast_forward_commit(_Config) ->
     ),
     ok.
 
-t_handler_unexpected_msg(_Config) ->
+t_cleaner_unexpected_msg(_Config) ->
-    Handler = emqx_cluster_rpc_handler,
+    Cleaner = emqx_cluster_cleaner,
-    OldPid = erlang:whereis(Handler),
+    OldPid = erlang:whereis(Cleaner),
-    ok = gen_server:cast(Handler, unexpected_cast_msg),
+    ok = gen_server:cast(Cleaner, unexpected_cast_msg),
-    ignore = gen_server:call(Handler, unexpected_cast_msg),
+    ignore = gen_server:call(Cleaner, unexpected_cast_msg),
-    erlang:send(Handler, unexpected_info_msg),
+    erlang:send(Cleaner, unexpected_info_msg),
-    NewPid = erlang:whereis(Handler),
+    NewPid = erlang:whereis(Cleaner),
     ?assertEqual(OldPid, NewPid),
     ok.
 
@@ -279,8 +281,8 @@ start() ->
     {ok, Pid1} = emqx_cluster_rpc:start_link(),
     {ok, Pid2} = emqx_cluster_rpc:start_link({node(), ?NODE2}, ?NODE2, 500),
     {ok, Pid3} = emqx_cluster_rpc:start_link({node(), ?NODE3}, ?NODE3, 500),
-    {ok, Pid4} = emqx_cluster_rpc_handler:start_link(100, 500),
+    {ok, Pid4} = emqx_cluster_rpc_cleaner:start_link(100, 500),
-    true = erlang:register(emqx_cluster_rpc_handler, Pid4),
+    true = erlang:register(emqx_cluster_rpc_cleaner, Pid4),
     {ok, [Pid1, Pid2, Pid3, Pid4]}.
 
 stop() ->
@@ -296,7 +298,7 @@ stop() ->
         end
      || N <- [?NODE1, ?NODE2, ?NODE3]
     ],
-    gen_server:stop(emqx_cluster_rpc_handler, normal, 5000).
+    gen_server:stop(emqx_cluster_rpc_cleaner, normal, 5000).
 
 receive_msg(0, _Msg) ->
     ok;

apps/emqx_connector/src/emqx_connector_mysql.erl

@@ -172,10 +172,15 @@ on_query(
                     %% not return result, next loop will try again
                     on_query(InstId, {TypeOrKey, SQLOrKey, Params, Timeout}, State);
                 {error, Reason} ->
-                    LogMeta = #{connector => InstId, sql => SQLOrKey, state => State},
+                    ?tp(
-                    ?SLOG(
                         error,
-                        LogMeta#{msg => "mysql_connector_do_prepare_failed", reason => Reason}
+                        "mysql_connector_do_prepare_failed",
+                        #{
+                            connector => InstId,
+                            sql => SQLOrKey,
+                            state => State,
+                            reason => Reason
+                        }
                     ),
                     {error, Reason}
             end;
@@ -417,12 +422,10 @@ on_sql_query(
             ),
             do_sql_query(SQLFunc, Conn, SQLOrKey, Params, Timeout, LogMeta);
         {error, disconnected} ->
-            ?SLOG(
+            ?tp(
                 error,
-                LogMeta#{
+                "mysql_connector_do_sql_query_failed",
-                    msg => "mysql_connector_do_sql_query_failed",
+                LogMeta#{reason => worker_is_disconnected}
-                    reason => worker_is_disconnected
-                }
             ),
             {error, {recoverable_error, disconnected}}
     end.

apps/emqx_connector/src/emqx_connector_pgsql.erl

@@ -44,7 +44,8 @@
     execute_batch/3
 ]).
 
--export([do_get_status/1]).
+%% for ecpool workers usage
+-export([do_get_status/1, prepare_sql_to_conn/2]).
 
 -define(PGSQL_HOST_OPTIONS, #{
     default_port => ?PGSQL_DEFAULT_PORT

apps/emqx_gateway/src/emqx_gateway_schema.erl

@@ -91,20 +91,20 @@ fields(clientinfo_override) ->
     ];
 fields(udp_listeners) ->
     [
-        {udp, sc(map(name, ref(udp_listener)), #{desc => ?DESC(udp_listener)})},
+        {udp, sc(map(name, ref(udp_listener)), #{desc => ?DESC(listener_name_to_settings_map)})},
-        {dtls, sc(map(name, ref(dtls_listener)), #{desc => ?DESC(dtls_listener)})}
+        {dtls, sc(map(name, ref(dtls_listener)), #{desc => ?DESC(listener_name_to_settings_map)})}
     ];
 fields(tcp_listeners) ->
     [
-        {tcp, sc(map(name, ref(tcp_listener)), #{desc => ?DESC(tcp_listener)})},
+        {tcp, sc(map(name, ref(tcp_listener)), #{desc => ?DESC(listener_name_to_settings_map)})},
-        {ssl, sc(map(name, ref(ssl_listener)), #{desc => ?DESC(ssl_listener)})}
+        {ssl, sc(map(name, ref(ssl_listener)), #{desc => ?DESC(listener_name_to_settings_map)})}
     ];
 fields(tcp_udp_listeners) ->
     [
-        {tcp, sc(map(name, ref(tcp_listener)), #{desc => ?DESC(tcp_listener)})},
+        {tcp, sc(map(name, ref(tcp_listener)), #{desc => ?DESC(listener_name_to_settings_map)})},
-        {ssl, sc(map(name, ref(ssl_listener)), #{desc => ?DESC(ssl_listener)})},
+        {ssl, sc(map(name, ref(ssl_listener)), #{desc => ?DESC(listener_name_to_settings_map)})},
-        {udp, sc(map(name, ref(udp_listener)), #{desc => ?DESC(udp_listener)})},
+        {udp, sc(map(name, ref(udp_listener)), #{desc => ?DESC(listener_name_to_settings_map)})},
-        {dtls, sc(map(name, ref(dtls_listener)), #{desc => ?DESC(dtls_listener)})}
+        {dtls, sc(map(name, ref(dtls_listener)), #{desc => ?DESC(listener_name_to_settings_map)})}
     ];
 fields(tcp_listener) ->
     %% some special configs for tcp listener
@@ -167,19 +167,19 @@ desc(udp_listeners) ->
 desc(tcp_listeners) ->
     "Settings for the TCP listeners.";
 desc(tcp_udp_listeners) ->
-    "Settings for the listeners.";
+    "Settings for TCP and UDP listeners.";
 desc(tcp_listener) ->
-    "Settings for the TCP listener.";
+    "Settings for TCP listener.";
 desc(ssl_listener) ->
-    "Settings for the SSL listener.";
+    "Settings for SSL listener.";
 desc(udp_listener) ->
-    "Settings for the UDP listener.";
+    "Settings for UDP listener.";
 desc(dtls_listener) ->
-    "Settings for the DTLS listener.";
+    "Settings for DTLS listener.";
 desc(udp_opts) ->
-    "Settings for the UDP sockets.";
+    "Settings for UDP sockets.";
 desc(dtls_opts) ->
-    "Settings for the DTLS protocol.";
+    "Settings for DTLS protocol.";
 desc(_) ->
     undefined.
 
@@ -189,6 +189,8 @@ authentication_schema() ->
         #{
             required => {false, recursively},
             desc => ?DESC(gateway_common_authentication),
+            %% we do not expose this to the user for now
+            importance => ?IMPORTANCE_HIDDEN,
             examples => emqx_authn_api:authenticator_examples()
         }
     ).
@@ -234,7 +236,7 @@ mountpoint(Default) ->
         binary(),
         #{
             default => iolist_to_binary(Default),
-            desc => ?DESC(gateway_common_mountpoint)
+            desc => ?DESC(gateway_mountpoint)
         }
     ).
 
@@ -283,7 +285,7 @@ common_listener_opts() ->
                 binary(),
                 #{
                     default => undefined,
-                    desc => ?DESC(gateway_common_listener_mountpoint)
+                    desc => ?DESC(gateway_mountpoint)
                 }
             )},
         {access_rules,

apps/emqx_management/README.md

@@ -1,12 +1,42 @@
 
-# emqx-management
+# EMQX Management
 
-EMQX Management API
+EMQX Management offers various interfaces for administrators to interact with
+the system, either by a remote console attached to a running node, a CLI (i.e.
+`./emqx ctl`), or through its rich CRUD-style REST API (mostly used by EMQX'
+dashboard). The system enables administrators to modify both cluster and
+individual node configurations, and provides the ability to view and reset
+different statistics and metrics.
 
-## How to Design RESTful API?
+## Functionality
 
-http://restful-api-design.readthedocs.io/en/latest/scope.html
+Amongst others it allows to manage
 
-default application see:
+* Alarms
-header:
+* API Keys
-authorization: Basic YWRtaW46cHVibGlj
+* Banned clients, users or hosts
+* Clients (and sessions) including their topic subscriptions
+* Configurations
+* Manage plugins
+* Fixed subscriptions
+* Topics
+
+Moreover it lets you
+
+* modify hot and non-hot updatable configuration values,
+* publish messages, as well as bulk messages,
+* create trace files,
+* and last but not least monitor system status.
+
+## Implementation Notes
+
+API endpoints are implemented using the `minirest` framework in combination with
+HOCON schema and OpenAPI 3.0 specifications.
+
+## TODO/FIXME
+
+At its current state there are some reverse dependencies from other applications
+that do calls directly into `emqx_mgmt`.
+
+Also, and somewhat related, its bpapi proto modules do calls directly into
+other applications.

apps/emqx_modules/src/emqx_delayed_api.erl

@@ -52,7 +52,7 @@
 -define(INVALID_NODE, 'INVALID_NODE').
 
 api_spec() ->
-    emqx_dashboard_swagger:spec(?MODULE).
+    emqx_dashboard_swagger:spec(?MODULE, #{check_schema => true}).
 
 paths() ->
     [
@@ -202,9 +202,9 @@ delayed_message(get, #{bindings := #{node := NodeBin, msgid := HexId}}) ->
                             {200, Message#{payload => base64:encode(Payload)}}
                     end;
                 {error, not_found} ->
-                    {404, generate_http_code_map(not_found, Id)};
+                    {404, generate_http_code_map(not_found, HexId)};
                 {badrpc, _} ->
-                    {400, generate_http_code_map(invalid_node, Id)}
+                    {400, generate_http_code_map(invalid_node, NodeBin)}
             end
         end
     );
@@ -271,19 +271,19 @@ generate_http_code_map(id_schema_error, Id) ->
     #{
         code => ?MESSAGE_ID_SCHEMA_ERROR,
         message =>
-            iolist_to_binary(io_lib:format("Message ID ~p schema error", [Id]))
+            iolist_to_binary(io_lib:format("Message ID ~s schema error", [Id]))
     };
 generate_http_code_map(not_found, Id) ->
     #{
         code => ?MESSAGE_ID_NOT_FOUND,
         message =>
-            iolist_to_binary(io_lib:format("Message ID ~p not found", [Id]))
+            iolist_to_binary(io_lib:format("Message ID ~s not found", [Id]))
     };
 generate_http_code_map(invalid_node, Node) ->
     #{
         code => ?INVALID_NODE,
         message =>
-            iolist_to_binary(io_lib:format("The node name ~p is invalid", [Node]))
+            iolist_to_binary(io_lib:format("The node name ~s is invalid", [Node]))
     }.
 
 make_maybe(X, Error, Fun) ->

apps/emqx_modules/src/emqx_modules.app.src

@@ -1,7 +1,7 @@
 %% -*- mode: erlang -*-
 {application, emqx_modules, [
     {description, "EMQX Modules"},
-    {vsn, "5.0.11"},
+    {vsn, "5.0.12"},
     {modules, []},
     {applications, [kernel, stdlib, emqx, emqx_ctl]},
     {mod, {emqx_modules_app, []}},

apps/emqx_resource/src/emqx_resource.erl

@@ -356,7 +356,14 @@ is_buffer_supported(Module) ->
 -spec call_start(manager_id(), module(), resource_config()) ->
     {ok, resource_state()} | {error, Reason :: term()}.
 call_start(MgrId, Mod, Config) ->
-    ?SAFE_CALL(Mod:on_start(MgrId, Config)).
+    try
+        Mod:on_start(MgrId, Config)
+    catch
+        throw:Error ->
+            {error, Error};
+        Kind:Error:Stacktrace ->
+            {error, #{exception => Kind, reason => Error, stacktrace => Stacktrace}}
+    end.
 
 -spec call_health_check(manager_id(), module(), resource_state()) ->
     resource_status()

apps/emqx_resource/src/schema/emqx_resource_schema.erl

@@ -30,18 +30,6 @@ namespace() -> "resource_schema".
 
 roots() -> [].
 
-fields("resource_opts_sync_only") ->
-    [
-        {resource_opts,
-            mk(
-                ref(?MODULE, "creation_opts_sync_only"),
-                resource_opts_meta()
-            )}
-    ];
-fields("creation_opts_sync_only") ->
-    Fields = fields("creation_opts"),
-    QueryMod = {query_mode, fun query_mode_sync_only/1},
-    lists:keyreplace(query_mode, 1, Fields, QueryMod);
 fields("resource_opts") ->
     [
         {resource_opts,
@@ -82,7 +70,7 @@ worker_pool_size(required) -> false;
 worker_pool_size(_) -> undefined.
 
 resume_interval(type) -> emqx_schema:duration_ms();
-resume_interval(importance) -> hidden;
+resume_interval(importance) -> ?IMPORTANCE_HIDDEN;
 resume_interval(desc) -> ?DESC("resume_interval");
 resume_interval(required) -> false;
 resume_interval(_) -> undefined.
@@ -117,12 +105,6 @@ query_mode(default) -> async;
 query_mode(required) -> false;
 query_mode(_) -> undefined.
 
-query_mode_sync_only(type) -> enum([sync]);
-query_mode_sync_only(desc) -> ?DESC("query_mode_sync_only");
-query_mode_sync_only(default) -> sync;
-query_mode_sync_only(required) -> false;
-query_mode_sync_only(_) -> undefined.
-
 request_timeout(type) -> hoconsc:union([infinity, emqx_schema:duration_ms()]);
 request_timeout(desc) -> ?DESC("request_timeout");
 request_timeout(default) -> <<"15s">>;
@@ -167,7 +149,4 @@ max_queue_bytes(default) -> ?DEFAULT_QUEUE_SIZE_RAW;
 max_queue_bytes(required) -> false;
 max_queue_bytes(_) -> undefined.
 
-desc("creation_opts") ->
+desc("creation_opts") -> ?DESC("creation_opts").
-    ?DESC("creation_opts");
-desc("creation_opts_sync_only") ->
-    ?DESC("creation_opts").

apps/emqx_rule_engine/src/emqx_rule_runtime.erl

@@ -508,12 +508,12 @@ nested_put(Alias, Val, Columns0) ->
     emqx_rule_maps:nested_put(Alias, Val, Columns).
 
 -define(IS_RES_DOWN(R), R == stopped; R == not_connected; R == not_found).
-inc_action_metrics(ok, RuleId) ->
-    emqx_metrics_worker:inc(rule_metrics, RuleId, 'actions.success');
 inc_action_metrics({error, {recoverable_error, _}}, RuleId) ->
     emqx_metrics_worker:inc(rule_metrics, RuleId, 'actions.failed.out_of_service');
 inc_action_metrics(?RESOURCE_ERROR_M(R, _), RuleId) when ?IS_RES_DOWN(R) ->
     emqx_metrics_worker:inc(rule_metrics, RuleId, 'actions.failed.out_of_service');
+inc_action_metrics({error, {unrecoverable_error, _}}, RuleId) ->
+    emqx_metrics_worker:inc(rule_metrics, RuleId, 'actions.failed');
 inc_action_metrics(R, RuleId) ->
     case is_ok_result(R) of
         false ->
@@ -527,5 +527,5 @@ is_ok_result(ok) ->
     true;
 is_ok_result(R) when is_tuple(R) ->
     ok == erlang:element(1, R);
-is_ok_result(ok) ->
+is_ok_result(_) ->
     false.

apps/emqx_rule_engine/test/emqx_rule_funcs_SUITE.erl

@@ -687,10 +687,6 @@ t_jq(_) ->
                 got_timeout
         end,
     ConfigRootKey = emqx_rule_engine_schema:namespace(),
-    DefaultTimeOut = emqx_config:get([
-        ConfigRootKey,
-        jq_function_default_timeout
-    ]),
     ?assertThrow(
         {jq_exception, {timeout, _}},
         apply_func(jq, [TOProgram, <<"-2">>])

changes/ce/feat-10306.en.md

@@ -0,0 +1,3 @@
+Add support for `async` query mode for most bridges.
+
+Before this change, some bridges (Cassandra, MongoDB, MySQL, Postgres, Redis, RocketMQ, TDengine) were only allowed to be created with a `sync` query mode.

changes/ce/fix-10313.en.md

@@ -0,0 +1,2 @@
+Ensure that when the core or replicant node starting, the `cluster-override.conf` file is only copied from the core node.
+Previously, when sorting nodes by startup time, the core node may have copied this file from the replicant node.

changes/ce/fix-10313.zh.md

@@ -0,0 +1,2 @@
+确保当 core 或 replicant 节点启动时，仅从 core 节点复制 `cluster-override.conf` 文件。
+此前按照节点启动时间排序时，core 节点可能从 replicant 节点复制该文件。

changes/ce/fix-10315.en.md

@@ -0,0 +1 @@
+Fix crash checking `limit` and `page` parameters in `/mqtt/delayed/messages` API call.

changes/ce/fix-10317.en.md

@@ -0,0 +1 @@
+Do not expose listener level authentications before extensive verification.

changes/ce/fix-10317.zh.md

@@ -0,0 +1 @@
+在大量验证完成前不暴露监听器级的认证功能。

changes/ce/fix-10323.en.md

@@ -0,0 +1,2 @@
+For security reasons, the value of the `password` field in the API examples is replaced with `******`.
+

changes/ce/fix-10323.zh.md

@@ -0,0 +1,2 @@
+出于安全原因，将 API 示例中 `password` 字段的值，统一更换为 `******`。
+

changes/ce/fix-10327.en.md

@@ -0,0 +1,4 @@
+Don't increment 'actions.failed.unknown' rule metrics counter upon receiving unrecoverable bridge errors.
+This counter is displayed on the dashboard's rule overview tab ('Action statistics' - 'Unknown'). 
+The fix is only applicable for synchronous bridges, as all rule actions for asynchronous bridges 
+are counted as successful (they increment 'actions.success' which is displayed as 'Action statistics' - 'Success'). 

changes/ee/fix-10201.en.md

@@ -0,0 +1 @@
+In TDengine, removed the redundant database name from the SQL template.

changes/ee/fix-10201.zh.md

@@ -0,0 +1 @@
+在 TDengine 桥接的 SQL 模板中，删除了多余的数据库表名。

changes/ee/fix-10289.en.md

@@ -1 +0,0 @@
-Clickhouse has got a fix that makes the error message better when users click the test button in the settings dialog.

changes/ee/fix-10289.zh.md

@@ -1 +0,0 @@
-Clickhouse 已经修复了一个问题，当用户在设置对话框中点击测试按钮时，错误信息会更清晰。

lib-ee/emqx_ee_bridge/i18n/emqx_ee_bridge_clickhouse.conf

@@ -1,109 +0,0 @@
-emqx_ee_bridge_clickhouse {
-
-    local_topic {
-        desc {
-            en: """The MQTT topic filter to be forwarded to Clickhouse. All MQTT 'PUBLISH' messages with the topic
-matching the local_topic will be forwarded.</br>
-NOTE: if this bridge is used as the action of a rule (EMQX rule engine), and also local_topic is
-configured, then both the data got from the rule and the MQTT messages that match local_topic
-will be forwarded.
-"""
-            zh: """发送到 'local_topic' 的消息都会转发到 Clickhouse。 </br>
-注意：如果这个 Bridge 被用作规则（EMQX 规则引擎）的输出，同时也配置了 'local_topic' ，那么这两部分的消息都会被转发。
-"""
-        }
-        label {
-                en: "Local Topic"
-                zh: "本地 Topic"
-            }
-    }
-    sql_template {
-        desc {
-            en: """SQL Template. The template string can contain placeholders
-for message metadata and payload field. The placeholders are inserted
-without any checking and special formatting, so it is important to
-ensure that the inserted values are formatted and escaped correctly."""
-            zh:
-            """SQL模板。模板字符串可以包含消息元数据和有效载荷字段的占位符。占位符
-的插入不需要任何检查和特殊格式化，因此必须确保插入的数值格式化和转义正确。模板字符串可以包含占位符
-模板字符串可以包含消息元数据和有效载荷字段的占位符。这些占位符被插入
-所以必须确保插入的值的格式正确。因此，确保插入的值格式化和转义正确是非常重要的。模板字符串可以包含占位符
-模板字符串可以包含消息元数据和有效载荷字段的占位符。这些占位符被插入
-所以必须确保插入的值的格式正确。确保插入的值被正确地格式化和转义。"""
-            }
-        label {
-            en: "SQL Template"
-            zh: "SQL 模板"
-        }
-    }
-    batch_value_separator {
-        desc {
-            en: """The bridge repeats what comes after the VALUES or FORMAT FormatType in the
-SQL template to form a batch request. The value specified with
-this parameter will be inserted between the values. The default
-value ',' works for the VALUES format, but other values
-might be needed if you specify some other format with the 
-clickhouse FORMAT syntax.
-
-See https://clickhouse.com/docs/en/sql-reference/statements/insert-into/ and
-https://clickhouse.com/docs/en/interfaces/formats#formats for more information about
-the format syntax and the available formats."""
-            zh: """桥接会重复 VALUES 或 FORMAT 格式类型之后的内容。中 VALUES 或
-FORMAT FormatType 后面的内容，以形成一个批处理请求。用这个参数指定的值
-这个参数指定的值将被插入到这些值之间。默认的
-默认值','适用于VALUES格式，但是如果你指定了其他的格式，可能需要其他的值。可能需要其他值，如果你用
-"clickhouse FORMAT "语法指定其他格式。语法指定其他格式。
-
-参见https://clickhouse.com/docs/en/sql-reference/statements/insert-into/ 和
-https://clickhouse.com/docs/en/interfaces/formats#formats 了解更多关于
-格式语法和可用的格式。"""
-            }
-        label {
-            en: "Batch Value Separator"
-            zh: "批量值分离器"
-        }
-    }
-    config_enable {
-        desc {
-            en: """Enable or disable this bridge"""
-            zh: """启用/禁用桥接"""
-        }
-        label {
-            en: "Enable Or Disable Bridge"
-            zh: "启用/禁用桥接"
-        }
-        }
-
-    desc_config {
-        desc {
-            en: """Configuration for a Clickhouse bridge."""
-            zh: """Clickhouse 桥接配置"""
-        }
-        label: {
-            en: "Clickhouse Bridge Configuration"
-            zh: "Clickhouse 桥接配置"
-        }
-    }
-
-    desc_type {
-        desc {
-            en: """The Bridge Type"""
-            zh: """Bridge 类型"""
-        }
-        label {
-            en: "Bridge Type"
-            zh: "桥接类型"
-        }
-    }
-
-    desc_name {
-        desc {
-            en: """Bridge name."""
-            zh: """桥接名字"""
-        }
-        label {
-            en: "Bridge Name"
-            zh: "桥接名字"
-        }
-    }
-}

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_cassa.erl

@@ -86,21 +86,10 @@ fields("config") ->
             mk(
                 binary(),
                 #{desc => ?DESC("local_topic"), default => undefined}
-            )},
-        {resource_opts,
-            mk(
-                ref(?MODULE, "creation_opts"),
-                #{
-                    required => false,
-                    default => #{},
-                    desc => ?DESC(emqx_resource_schema, <<"resource_opts">>)
-                }
             )}
-    ] ++
+    ] ++ emqx_resource_schema:fields("resource_opts") ++
         (emqx_ee_connector_cassa:fields(config) --
             emqx_connector_schema_lib:prepare_statement_fields());
-fields("creation_opts") ->
-    emqx_resource_schema:fields("creation_opts_sync_only");
 fields("post") ->
     fields("post", cassandra);
 fields("put") ->
@@ -115,8 +104,6 @@ desc("config") ->
     ?DESC("desc_config");
 desc(Method) when Method =:= "get"; Method =:= "put"; Method =:= "post" ->
     ["Configuration for Cassandra using `", string:to_upper(Method), "` method."];
-desc("creation_opts" = Name) ->
-    emqx_resource_schema:desc(Name);
 desc(_) ->
     undefined.
 

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_clickhouse.erl

@@ -50,7 +50,7 @@ values(_Method, Type) ->
         database => <<"mqtt">>,
         pool_size => 8,
         username => <<"default">>,
-        password => <<"public">>,
+        password => <<"******">>,
         sql => ?DEFAULT_SQL,
         batch_value_separator => ?DEFAULT_BATCH_VALUE_SEPARATOR,
         local_topic => <<"local/topic/#">>,

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_dynamo.erl

@@ -46,7 +46,7 @@ values(_Method) ->
         database => <<"mqtt">>,
         pool_size => 8,
         username => <<"root">>,
-        password => <<"public">>,
+        password => <<"******">>,
         template => ?DEFAULT_TEMPLATE,
         local_topic => <<"local/topic/#">>,
         resource_opts => #{

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_influxdb.erl

@@ -61,7 +61,7 @@ values("influxdb_api_v1", post) ->
     TypeOpts = #{
         database => <<"example_database">>,
         username => <<"example_username">>,
-        password => <<"examlpe_password">>,
+        password => <<"******">>,
         server => <<"127.0.0.1:8086">>
     },
     values(common, "influxdb_api_v1", SupportUint, TypeOpts);

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_kafka.erl

@@ -64,7 +64,7 @@ values(common_config) ->
         authentication => #{
             mechanism => <<"plain">>,
             username => <<"username">>,
-            password => <<"password">>
+            password => <<"******">>
         },
         bootstrap_hosts => <<"localhost:9092">>,
         connect_timeout => <<"5s">>,
@@ -233,7 +233,7 @@ fields(socket_opts) ->
                 boolean(),
                 #{
                     default => true,
-                    hidden => true,
+                    importance => ?IMPORTANCE_HIDDEN,
                     desc => ?DESC(socket_nodelay)
                 }
             )}

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_mongodb.erl

@@ -38,7 +38,7 @@ fields("config") ->
         {enable, mk(boolean(), #{desc => ?DESC("enable"), default => true})},
         {collection, mk(binary(), #{desc => ?DESC("collection"), default => <<"mqtt">>})},
         {payload_template, mk(binary(), #{required => false, desc => ?DESC("payload_template")})}
-    ] ++ emqx_resource_schema:fields("resource_opts_sync_only");
+    ] ++ emqx_resource_schema:fields("resource_opts");
 fields(mongodb_rs) ->
     emqx_connector_mongo:fields(rs) ++ fields("config");
 fields(mongodb_sharded) ->
@@ -149,7 +149,7 @@ values(common, MongoType, Method, TypeOpts) ->
         srv_record => false,
         pool_size => 8,
         username => <<"myuser">>,
-        password => <<"mypass">>
+        password => <<"******">>
     },
     MethodVals = method_values(MongoType, Method),
     Vals0 = maps:merge(MethodVals, Common),

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_mysql.erl

@@ -47,7 +47,7 @@ values(_Method) ->
         database => <<"test">>,
         pool_size => 8,
         username => <<"root">>,
-        password => <<"">>,
+        password => <<"******">>,
         sql => ?DEFAULT_SQL,
         local_topic => <<"local/topic/#">>,
         resource_opts => #{
@@ -79,21 +79,10 @@ fields("config") ->
             mk(
                 binary(),
                 #{desc => ?DESC("local_topic"), default => undefined}
-            )},
-        {resource_opts,
-            mk(
-                ref(?MODULE, "creation_opts"),
-                #{
-                    required => false,
-                    default => #{},
-                    desc => ?DESC(emqx_resource_schema, <<"resource_opts">>)
-                }
             )}
-    ] ++
+    ] ++ emqx_resource_schema:fields("resource_opts") ++
         (emqx_connector_mysql:fields(config) --
             emqx_connector_schema_lib:prepare_statement_fields());
-fields("creation_opts") ->
-    emqx_resource_schema:fields("creation_opts_sync_only");
 fields("post") ->
     [type_field(), name_field() | fields("config")];
 fields("put") ->
@@ -105,8 +94,6 @@ desc("config") ->
     ?DESC("desc_config");
 desc(Method) when Method =:= "get"; Method =:= "put"; Method =:= "post" ->
     ["Configuration for MySQL using `", string:to_upper(Method), "` method."];
-desc("creation_opts" = Name) ->
-    emqx_resource_schema:desc(Name);
 desc(_) ->
     undefined.
 

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_pgsql.erl

@@ -49,7 +49,7 @@ values(_Method, Type) ->
         database => <<"mqtt">>,
         pool_size => 8,
         username => <<"root">>,
-        password => <<"public">>,
+        password => <<"******">>,
         sql => ?DEFAULT_SQL,
         local_topic => <<"local/topic/#">>,
         resource_opts => #{
@@ -81,21 +81,10 @@ fields("config") ->
             mk(
                 binary(),
                 #{desc => ?DESC("local_topic"), default => undefined}
-            )},
-        {resource_opts,
-            mk(
-                ref(?MODULE, "creation_opts"),
-                #{
-                    required => false,
-                    default => #{},
-                    desc => ?DESC(emqx_resource_schema, <<"resource_opts">>)
-                }
             )}
-    ] ++
+    ] ++ emqx_resource_schema:fields("resource_opts") ++
         (emqx_connector_pgsql:fields(config) --
             emqx_connector_schema_lib:prepare_statement_fields());
-fields("creation_opts") ->
-    emqx_resource_schema:fields("creation_opts_sync_only");
 fields("post") ->
     fields("post", pgsql);
 fields("put") ->
@@ -110,8 +99,6 @@ desc("config") ->
     ?DESC("desc_config");
 desc(Method) when Method =:= "get"; Method =:= "put"; Method =:= "post" ->
     ["Configuration for PostgreSQL using `", string:to_upper(Method), "` method."];
-desc("creation_opts" = Name) ->
-    emqx_resource_schema:desc(Name);
 desc(_) ->
     undefined.
 

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_redis.erl

@@ -77,7 +77,7 @@ values(common, RedisType, SpecificOpts) ->
         enable => true,
         local_topic => <<"local/topic/#">>,
         pool_size => 8,
-        password => <<"secret">>,
+        password => <<"******">>,
         command_template => [<<"LPUSH">>, <<"MSGS">>, <<"${payload}">>],
         resource_opts => values(resource_opts, RedisType, #{}),
         ssl => #{enable => false}
@@ -180,10 +180,10 @@ resource_fields(Type) ->
 resource_creation_fields("redis_cluster") ->
     % TODO
     % Cluster bridge is currently incompatible with batching.
-    Fields = emqx_resource_schema:fields("creation_opts_sync_only"),
+    Fields = emqx_resource_schema:fields("creation_opts"),
     lists:foldl(fun proplists:delete/2, Fields, [batch_size, batch_time, enable_batch]);
 resource_creation_fields(_) ->
-    emqx_resource_schema:fields("creation_opts_sync_only").
+    emqx_resource_schema:fields("creation_opts").
 
 desc("config") ->
     ?DESC("desc_config");

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_rocketmq.erl

@@ -80,21 +80,10 @@ fields("config") ->
             mk(
                 binary(),
                 #{desc => ?DESC("local_topic"), required => false}
-            )},
-        {resource_opts,
-            mk(
-                ref(?MODULE, "creation_opts"),
-                #{
-                    required => false,
-                    default => #{<<"request_timeout">> => ?DEFFAULT_REQ_TIMEOUT},
-                    desc => ?DESC(emqx_resource_schema, <<"resource_opts">>)
-                }
             )}
-    ] ++
+    ] ++ emqx_resource_schema:fields("resource_opts") ++
         (emqx_ee_connector_rocketmq:fields(config) --
             emqx_connector_schema_lib:prepare_statement_fields());
-fields("creation_opts") ->
-    emqx_resource_schema:fields("creation_opts_sync_only");
 fields("post") ->
     [type_field(), name_field() | fields("config")];
 fields("put") ->
@@ -106,8 +95,6 @@ desc("config") ->
     ?DESC("desc_config");
 desc(Method) when Method =:= "get"; Method =:= "put"; Method =:= "post" ->
     ["Configuration for RocketMQ using `", string:to_upper(Method), "` method."];
-desc("creation_opts" = Name) ->
-    emqx_resource_schema:desc(Name);
 desc(_) ->
     undefined.
 

lib-ee/emqx_ee_bridge/src/emqx_ee_bridge_tdengine.erl

@@ -22,7 +22,7 @@
 ]).
 
 -define(DEFAULT_SQL, <<
-    "insert into mqtt.t_mqtt_msg(ts, msgid, mqtt_topic, qos, payload, arrived) "
+    "insert into t_mqtt_msg(ts, msgid, mqtt_topic, qos, payload, arrived) "
     "values (${ts}, ${id}, ${topic}, ${qos}, ${payload}, ${timestamp})"
 >>).
 
@@ -80,19 +80,8 @@ fields("config") ->
             mk(
                 binary(),
                 #{desc => ?DESC("local_topic"), default => undefined}
-            )},
-        {resource_opts,
-            mk(
-                ref(?MODULE, "creation_opts"),
-                #{
-                    required => false,
-                    default => #{},
-                    desc => ?DESC(emqx_resource_schema, <<"resource_opts">>)
-                }
             )}
-    ] ++ emqx_ee_connector_tdengine:fields(config);
+    ] ++ emqx_resource_schema:fields("resource_opts") ++ emqx_ee_connector_tdengine:fields(config);
-fields("creation_opts") ->
-    emqx_resource_schema:fields("creation_opts_sync_only");
 fields("post") ->
     [type_field(), name_field() | fields("config")];
 fields("put") ->
@@ -104,8 +93,6 @@ desc("config") ->
     ?DESC("desc_config");
 desc(Method) when Method =:= "get"; Method =:= "put"; Method =:= "post" ->
     ["Configuration for TDengine using `", string:to_upper(Method), "` method."];
-desc("creation_opts" = Name) ->
-    emqx_resource_schema:desc(Name);
 desc(_) ->
     undefined.
 

lib-ee/emqx_ee_bridge/src/kafka/emqx_bridge_impl_kafka_consumer.erl

@@ -95,6 +95,11 @@
     commit_fun => brod_group_subscriber_v2:commit_fun()
 }.
 
+-define(CLIENT_DOWN_MESSAGE,
+    "Failed to start Kafka client. Please check the logs for errors and check"
+    " the connection parameters."
+).
+
 %%-------------------------------------------------------------------------------------
 %% `emqx_resource' API
 %%-------------------------------------------------------------------------------------
@@ -152,7 +157,7 @@ on_start(InstanceId, Config) ->
                 kafka_hosts => BootstrapHosts,
                 reason => emqx_misc:redact(Reason)
             }),
-            throw(failed_to_start_kafka_client)
+            throw(?CLIENT_DOWN_MESSAGE)
     end,
     start_consumer(Config, InstanceId, ClientID).
 
@@ -173,7 +178,7 @@ on_get_status(_InstanceID, State) ->
         kafka_client_id := ClientID,
         kafka_topics := KafkaTopics
     } = State,
-    do_get_status(ClientID, KafkaTopics, SubscriberId).
+    do_get_status(State, ClientID, KafkaTopics, SubscriberId).
 
 %%-------------------------------------------------------------------------------------
 %% `brod_group_subscriber' API
@@ -370,22 +375,41 @@ stop_client(ClientID) ->
     ),
     ok.
 
-do_get_status(ClientID, [KafkaTopic | RestTopics], SubscriberId) ->
+do_get_status(State, ClientID, [KafkaTopic | RestTopics], SubscriberId) ->
     case brod:get_partitions_count(ClientID, KafkaTopic) of
         {ok, NPartitions} ->
-            case do_get_status(ClientID, KafkaTopic, SubscriberId, NPartitions) of
+            case do_get_status1(ClientID, KafkaTopic, SubscriberId, NPartitions) of
-                connected -> do_get_status(ClientID, RestTopics, SubscriberId);
+                connected -> do_get_status(State, ClientID, RestTopics, SubscriberId);
                 disconnected -> disconnected
             end;
+        {error, {client_down, Context}} ->
+            case infer_client_error(Context) of
+                auth_error ->
+                    Message = "Authentication error. " ++ ?CLIENT_DOWN_MESSAGE,
+                    {disconnected, State, Message};
+                {auth_error, Message0} ->
+                    Message = binary_to_list(Message0) ++ "; " ++ ?CLIENT_DOWN_MESSAGE,
+                    {disconnected, State, Message};
+                connection_refused ->
+                    Message = "Connection refused. " ++ ?CLIENT_DOWN_MESSAGE,
+                    {disconnected, State, Message};
+                _ ->
+                    {disconnected, State, ?CLIENT_DOWN_MESSAGE}
+            end;
+        {error, leader_not_available} ->
+            Message =
+                "Leader connection not available. Please check the Kafka topic used,"
+                " the connection parameters and Kafka cluster health",
+            {disconnected, State, Message};
         _ ->
             disconnected
     end;
-do_get_status(_ClientID, _KafkaTopics = [], _SubscriberId) ->
+do_get_status(_State, _ClientID, _KafkaTopics = [], _SubscriberId) ->
     connected.
 
--spec do_get_status(brod:client_id(), binary(), subscriber_id(), pos_integer()) ->
+-spec do_get_status1(brod:client_id(), binary(), subscriber_id(), pos_integer()) ->
     connected | disconnected.
-do_get_status(ClientID, KafkaTopic, SubscriberId, NPartitions) ->
+do_get_status1(ClientID, KafkaTopic, SubscriberId, NPartitions) ->
     Results =
         lists:map(
             fun(N) ->
@@ -504,3 +528,15 @@ encode(Value, base64) ->
 
 to_bin(B) when is_binary(B) -> B;
 to_bin(A) when is_atom(A) -> atom_to_binary(A, utf8).
+
+infer_client_error(Error) ->
+    case Error of
+        [{_BrokerEndpoint, {econnrefused, _}} | _] ->
+            connection_refused;
+        [{_BrokerEndpoint, {{sasl_auth_error, Message}, _}} | _] when is_binary(Message) ->
+            {auth_error, Message};
+        [{_BrokerEndpoint, {{sasl_auth_error, _}, _}} | _] ->
+            auth_error;
+        _ ->
+            undefined
+    end.

lib-ee/emqx_ee_bridge/src/kafka/emqx_bridge_impl_kafka_producer.erl

@@ -114,7 +114,10 @@ on_start(InstId, Config) ->
                     client_id => ClientId
                 }
             ),
-            throw(failed_to_start_kafka_producer)
+            throw(
+                "Failed to start Kafka client. Please check the logs for errors and check"
+                " the connection parameters."
+            )
     end.
 
 on_stop(_InstanceID, #{client_id := ClientID, producers := Producers, resource_id := ResourceID}) ->

lib-ee/emqx_ee_bridge/test/emqx_bridge_impl_kafka_consumer_SUITE.erl

@@ -388,7 +388,9 @@ end_per_testcase(_Testcase, Config) ->
                 maps:values(ProducersMapping)
             ),
             ok = wolff:stop_and_delete_supervised_client(KafkaProducerClientId),
-            emqx_common_test_helpers:call_janitor(),
+            %% in CI, apparently this needs more time since the
+            %% machines struggle with all the containers running...
+            emqx_common_test_helpers:call_janitor(60_000),
             ok = snabbkaffe:stop(),
             ok
     end.
@@ -1664,7 +1666,7 @@ t_cluster_group(Config) ->
                  || {Name, Opts} <- Cluster
                 ],
             on_exit(fun() ->
-                lists:foreach(
+                emqx_misc:pmap(
                     fun(N) ->
                         ct:pal("stopping ~p", [N]),
                         ok = emqx_common_test_helpers:stop_slave(N)
@@ -1875,7 +1877,7 @@ t_cluster_node_down(Config) ->
                     Cluster
                 ),
             on_exit(fun() ->
-                lists:foreach(
+                emqx_misc:pmap(
                     fun(N) ->
                         ct:pal("stopping ~p", [N]),
                         ok = emqx_common_test_helpers:stop_slave(N)
@@ -1894,10 +1896,14 @@ t_cluster_node_down(Config) ->
             {ok, _} = snabbkaffe:receive_events(SRef0),
             lists:foreach(
                 fun(N) ->
-                    ?assertMatch(
+                    ?retry(
-                        {ok, _},
+                        _Sleep1 = 100,
-                        erpc:call(N, emqx_bridge, lookup, [BridgeId]),
+                        _Attempts1 = 50,
-                        #{node => N}
+                        ?assertMatch(
+                            {ok, _},
+                            erpc:call(N, emqx_bridge, lookup, [BridgeId]),
+                            #{node => N}
+                        )
                     )
                 end,
                 Nodes

lib-ee/emqx_ee_bridge/test/emqx_bridge_impl_kafka_producer_SUITE.erl

@@ -9,6 +9,7 @@
 
 -include_lib("eunit/include/eunit.hrl").
 -include_lib("common_test/include/ct.hrl").
+-include_lib("snabbkaffe/include/snabbkaffe.hrl").
 -include_lib("brod/include/brod.hrl").
 
 -define(PRODUCER, emqx_bridge_impl_kafka_producer).
@@ -415,9 +416,11 @@ t_failed_creation_then_fix(Config) ->
         Type, erlang:list_to_atom(Name), WrongConf
     ),
     WrongConfigAtom = WrongConfigAtom1#{bridge_name => Name},
-    ?assertThrow(failed_to_start_kafka_producer, ?PRODUCER:on_start(ResourceId, WrongConfigAtom)),
+    ?assertThrow(Reason when is_list(Reason), ?PRODUCER:on_start(ResourceId, WrongConfigAtom)),
-    %% before throwing, it should cleanup the client process.
+    %% before throwing, it should cleanup the client process.  we
-    ?assertEqual([], supervisor:which_children(wolff_client_sup)),
+    %% retry because the supervisor might need some time to really
+    %% remove it from its tree.
+    ?retry(50, 10, ?assertEqual([], supervisor:which_children(wolff_client_sup))),
     %% must succeed with correct config
     {ok, #{config := ValidConfigAtom1}} = emqx_bridge:create(
         Type, erlang:list_to_atom(Name), ValidConf

lib-ee/emqx_ee_bridge/test/emqx_ee_bridge_cassa_SUITE.erl

@@ -73,15 +73,16 @@ all() ->
 groups() ->
     TCs = emqx_common_test_helpers:all(?MODULE),
     NonBatchCases = [t_write_timeout],
+    QueryModeGroups = [{group, async}, {group, sync}],
+    BatchingGroups = [
+        %{group, with_batch},
+        {group, without_batch}
+    ],
     [
-        {tcp, [
+        {tcp, QueryModeGroups},
-            %{group, with_batch},
+        {tls, QueryModeGroups},
-            {group, without_batch}
+        {async, BatchingGroups},
-        ]},
+        {sync, BatchingGroups},
-        {tls, [
-            %{group, with_batch},
-            {group, without_batch}
-        ]},
         {with_batch, TCs -- NonBatchCases},
         {without_batch, TCs}
     ].
@@ -93,7 +94,6 @@ init_per_group(tcp, Config) ->
         {cassa_host, Host},
         {cassa_port, Port},
         {enable_tls, false},
-        {query_mode, sync},
         {proxy_name, "cassa_tcp"}
         | Config
     ];
@@ -104,10 +104,13 @@ init_per_group(tls, Config) ->
         {cassa_host, Host},
         {cassa_port, Port},
         {enable_tls, true},
-        {query_mode, sync},
         {proxy_name, "cassa_tls"}
         | Config
     ];
+init_per_group(async, Config) ->
+    [{query_mode, async} | Config];
+init_per_group(sync, Config) ->
+    [{query_mode, sync} | Config];
 init_per_group(with_batch, Config0) ->
     Config = [{enable_batch, true} | Config0],
     common_init(Config);
@@ -139,14 +142,15 @@ end_per_suite(_Config) ->
 init_per_testcase(_Testcase, Config) ->
     connect_and_clear_table(Config),
     delete_bridge(Config),
+    snabbkaffe:start_trace(),
     Config.
 
 end_per_testcase(_Testcase, Config) ->
     ProxyHost = ?config(proxy_host, Config),
     ProxyPort = ?config(proxy_port, Config),
     emqx_common_test_helpers:reset_proxy(ProxyHost, ProxyPort),
-    connect_and_clear_table(Config),
     ok = snabbkaffe:stop(),
+    connect_and_clear_table(Config),
     delete_bridge(Config),
     ok.
 
@@ -171,6 +175,7 @@ common_init(Config0) ->
             ok = emqx_common_test_helpers:start_apps([emqx_conf, emqx_bridge]),
             emqx_mgmt_api_test_util:init_suite(),
             % Connect to cassnadra directly and create the table
+            catch connect_and_drop_table(Config0),
             connect_and_create_table(Config0),
             {Name, CassaConf} = cassa_config(BridgeType, Config0),
             Config =
@@ -250,9 +255,13 @@ parse_and_check(ConfigString, BridgeType, Name) ->
     Config.
 
 create_bridge(Config) ->
+    create_bridge(Config, _Overrides = #{}).
+
+create_bridge(Config, Overrides) ->
     BridgeType = ?config(cassa_bridge_type, Config),
     Name = ?config(cassa_name, Config),
-    BridgeConfig = ?config(cassa_config, Config),
+    BridgeConfig0 = ?config(cassa_config, Config),
+    BridgeConfig = emqx_map_lib:deep_merge(BridgeConfig0, Overrides),
     emqx_bridge:create(BridgeType, Name, BridgeConfig).
 
 delete_bridge(Config) ->
@@ -288,6 +297,27 @@ query_resource(Config, Request) ->
     ResourceID = emqx_bridge_resource:resource_id(BridgeType, Name),
     emqx_resource:query(ResourceID, Request, #{timeout => 1_000}).
 
+query_resource_async(Config, Request) ->
+    Name = ?config(cassa_name, Config),
+    BridgeType = ?config(cassa_bridge_type, Config),
+    Ref = alias([reply]),
+    AsyncReplyFun = fun(Result) -> Ref ! {result, Ref, Result} end,
+    ResourceID = emqx_bridge_resource:resource_id(BridgeType, Name),
+    Return = emqx_resource:query(ResourceID, Request, #{
+        timeout => 500, async_reply_fun => {AsyncReplyFun, []}
+    }),
+    {Return, Ref}.
+
+receive_result(Ref, Timeout) when is_reference(Ref) ->
+    receive
+        {result, Ref, Result} ->
+            {ok, Result};
+        {Ref, Result} ->
+            {ok, Result}
+    after Timeout ->
+        timeout
+    end.
+
 connect_direct_cassa(Config) ->
     Opts = #{
         nodes => [{?config(cassa_host, Config), ?config(cassa_port, Config)}],
@@ -546,15 +576,27 @@ t_write_failure(Config) ->
 %    ok.
 
 t_simple_sql_query(Config) ->
+    EnableBatch = ?config(enable_batch, Config),
+    QueryMode = ?config(query_mode, Config),
     ?assertMatch(
         {ok, _},
         create_bridge(Config)
     ),
     Request = {query, <<"SELECT count(1) AS T FROM system.local">>},
-    Result = query_resource(Config, Request),
+    Result =
-    case ?config(enable_batch, Config) of
+        case QueryMode of
-        true -> ?assertEqual({error, {unrecoverable_error, batch_prepare_not_implemented}}, Result);
+            sync ->
-        false -> ?assertMatch({ok, {<<"system.local">>, _, [[1]]}}, Result)
+                query_resource(Config, Request);
+            async ->
+                {_, Ref} = query_resource_async(Config, Request),
+                {ok, Res} = receive_result(Ref, 2_000),
+                Res
+        end,
+    case EnableBatch of
+        true ->
+            ?assertEqual({error, {unrecoverable_error, batch_prepare_not_implemented}}, Result);
+        false ->
+            ?assertMatch({ok, {<<"system.local">>, _, [[1]]}}, Result)
     end,
     ok.
 
@@ -565,22 +607,56 @@ t_missing_data(Config) ->
     ),
     %% emqx_ee_connector_cassa will send missed data as a `null` atom
     %% to ecql driver
-    Result = send_message(Config, #{}),
+    {_, {ok, Event}} =
+        ?wait_async_action(
+            send_message(Config, #{}),
+            #{?snk_kind := buffer_worker_flush_ack},
+            2_000
+        ),
     ?assertMatch(
         %% TODO: match error msgs
-        {error, {unrecoverable_error, {8704, <<"Expected 8 or 0 byte long for date (4)">>}}},
+        #{
-        Result
+            result :=
+                {error, {unrecoverable_error, {8704, <<"Expected 8 or 0 byte long for date (4)">>}}}
+        },
+        Event
     ),
     ok.
 
 t_bad_sql_parameter(Config) ->
+    QueryMode = ?config(query_mode, Config),
+    EnableBatch = ?config(enable_batch, Config),
+    Name = ?config(cassa_name, Config),
+    ResourceId = emqx_bridge_resource:resource_id(cassandra, Name),
     ?assertMatch(
         {ok, _},
-        create_bridge(Config)
+        create_bridge(
+            Config,
+            #{
+                <<"resource_opts">> => #{
+                    <<"request_timeout">> => 500,
+                    <<"resume_interval">> => 100,
+                    <<"health_check_interval">> => 100
+                }
+            }
+        )
     ),
     Request = {query, <<"">>, [bad_parameter]},
-    Result = query_resource(Config, Request),
+    Result =
-    case ?config(enable_batch, Config) of
+        case QueryMode of
+            sync ->
+                query_resource(Config, Request);
+            async ->
+                {_, Ref} = query_resource_async(Config, Request),
+                case receive_result(Ref, 5_000) of
+                    {ok, Res} ->
+                        Res;
+                    timeout ->
+                        ct:pal("mailbox:\n  ~p", [process_info(self(), messages)]),
+                        ct:fail("no response received")
+                end
+        end,
+    case EnableBatch of
         true ->
             ?assertEqual({error, {unrecoverable_error, invalid_request}}, Result);
         false ->

lib-ee/emqx_ee_bridge/test/emqx_ee_bridge_mongodb_SUITE.erl

@@ -9,6 +9,7 @@
 
 -include_lib("eunit/include/eunit.hrl").
 -include_lib("common_test/include/ct.hrl").
+-include_lib("snabbkaffe/include/snabbkaffe.hrl").
 
 %%------------------------------------------------------------------------------
 %% CT boilerplate
@@ -16,9 +17,8 @@
 
 all() ->
     [
-        {group, rs},
+        {group, async},
-        {group, sharded},
+        {group, sync}
-        {group, single}
         | (emqx_common_test_helpers:all(?MODULE) -- group_tests())
     ].
 
@@ -31,12 +31,23 @@ group_tests() ->
     ].
 
 groups() ->
+    TypeGroups = [
+        {group, rs},
+        {group, sharded},
+        {group, single}
+    ],
     [
+        {async, TypeGroups},
+        {sync, TypeGroups},
         {rs, group_tests()},
         {sharded, group_tests()},
         {single, group_tests()}
     ].
 
+init_per_group(async, Config) ->
+    [{query_mode, async} | Config];
+init_per_group(sync, Config) ->
+    [{query_mode, sync} | Config];
 init_per_group(Type = rs, Config) ->
     MongoHost = os:getenv("MONGO_RS_HOST", "mongo1"),
     MongoPort = list_to_integer(os:getenv("MONGO_RS_PORT", "27017")),
@@ -44,7 +55,7 @@ init_per_group(Type = rs, Config) ->
         true ->
             ok = start_apps(),
             emqx_mgmt_api_test_util:init_suite(),
-            {Name, MongoConfig} = mongo_config(MongoHost, MongoPort, Type),
+            {Name, MongoConfig} = mongo_config(MongoHost, MongoPort, Type, Config),
             [
                 {mongo_host, MongoHost},
                 {mongo_port, MongoPort},
@@ -63,7 +74,7 @@ init_per_group(Type = sharded, Config) ->
         true ->
             ok = start_apps(),
             emqx_mgmt_api_test_util:init_suite(),
-            {Name, MongoConfig} = mongo_config(MongoHost, MongoPort, Type),
+            {Name, MongoConfig} = mongo_config(MongoHost, MongoPort, Type, Config),
             [
                 {mongo_host, MongoHost},
                 {mongo_port, MongoPort},
@@ -82,7 +93,7 @@ init_per_group(Type = single, Config) ->
         true ->
             ok = start_apps(),
             emqx_mgmt_api_test_util:init_suite(),
-            {Name, MongoConfig} = mongo_config(MongoHost, MongoPort, Type),
+            {Name, MongoConfig} = mongo_config(MongoHost, MongoPort, Type, Config),
             [
                 {mongo_host, MongoHost},
                 {mongo_port, MongoPort},
@@ -99,6 +110,7 @@ end_per_group(_Type, _Config) ->
     ok.
 
 init_per_suite(Config) ->
+    emqx_common_test_helpers:clear_screen(),
     Config.
 
 end_per_suite(_Config) ->
@@ -109,11 +121,13 @@ end_per_suite(_Config) ->
 init_per_testcase(_Testcase, Config) ->
     catch clear_db(Config),
     delete_bridge(Config),
+    snabbkaffe:start_trace(),
     Config.
 
 end_per_testcase(_Testcase, Config) ->
     catch clear_db(Config),
     delete_bridge(Config),
+    snabbkaffe:stop(),
     ok.
 
 %%------------------------------------------------------------------------------
@@ -140,7 +154,8 @@ mongo_type_bin(sharded) ->
 mongo_type_bin(single) ->
     <<"mongodb_single">>.
 
-mongo_config(MongoHost, MongoPort0, rs = Type) ->
+mongo_config(MongoHost, MongoPort0, rs = Type, Config) ->
+    QueryMode = ?config(query_mode, Config),
     MongoPort = integer_to_list(MongoPort0),
     Servers = MongoHost ++ ":" ++ MongoPort,
     Name = atom_to_binary(?MODULE),
@@ -154,13 +169,19 @@ mongo_config(MongoHost, MongoPort0, rs = Type) ->
             "  w_mode = safe\n"
             "  database = mqtt\n"
             "  resource_opts = {\n"
+            "    query_mode = ~s\n"
             "    worker_pool_size = 1\n"
             "  }\n"
             "}",
-            [Name, Servers]
+            [
+                Name,
+                Servers,
+                QueryMode
+            ]
         ),
     {Name, parse_and_check(ConfigString, Type, Name)};
-mongo_config(MongoHost, MongoPort0, sharded = Type) ->
+mongo_config(MongoHost, MongoPort0, sharded = Type, Config) ->
+    QueryMode = ?config(query_mode, Config),
     MongoPort = integer_to_list(MongoPort0),
     Servers = MongoHost ++ ":" ++ MongoPort,
     Name = atom_to_binary(?MODULE),
@@ -173,13 +194,19 @@ mongo_config(MongoHost, MongoPort0, sharded = Type) ->
             "  w_mode = safe\n"
             "  database = mqtt\n"
             "  resource_opts = {\n"
+            "    query_mode = ~s\n"
             "    worker_pool_size = 1\n"
             "  }\n"
             "}",
-            [Name, Servers]
+            [
+                Name,
+                Servers,
+                QueryMode
+            ]
         ),
     {Name, parse_and_check(ConfigString, Type, Name)};
-mongo_config(MongoHost, MongoPort0, single = Type) ->
+mongo_config(MongoHost, MongoPort0, single = Type, Config) ->
+    QueryMode = ?config(query_mode, Config),
     MongoPort = integer_to_list(MongoPort0),
     Server = MongoHost ++ ":" ++ MongoPort,
     Name = atom_to_binary(?MODULE),
@@ -192,10 +219,15 @@ mongo_config(MongoHost, MongoPort0, single = Type) ->
             "  w_mode = safe\n"
             "  database = mqtt\n"
             "  resource_opts = {\n"
+            "    query_mode = ~s\n"
             "    worker_pool_size = 1\n"
             "  }\n"
             "}",
-            [Name, Server]
+            [
+                Name,
+                Server,
+                QueryMode
+            ]
         ),
     {Name, parse_and_check(ConfigString, Type, Name)}.
 
@@ -248,7 +280,7 @@ find_all(Config) ->
     Name = ?config(mongo_name, Config),
     #{<<"collection">> := Collection} = ?config(mongo_config, Config),
     ResourceID = emqx_bridge_resource:resource_id(Type, Name),
-    emqx_resource:query(ResourceID, {find, Collection, #{}, #{}}).
+    emqx_resource:simple_sync_query(ResourceID, {find, Collection, #{}, #{}}).
 
 send_message(Config, Payload) ->
     Name = ?config(mongo_name, Config),
@@ -266,7 +298,12 @@ t_setup_via_config_and_publish(Config) ->
         create_bridge(Config)
     ),
     Val = erlang:unique_integer(),
-    ok = send_message(Config, #{key => Val}),
+    {ok, {ok, _}} =
+        ?wait_async_action(
+            send_message(Config, #{key => Val}),
+            #{?snk_kind := mongo_ee_connector_on_query_return},
+            5_000
+        ),
     ?assertMatch(
         {ok, [#{<<"key">> := Val}]},
         find_all(Config)
@@ -286,7 +323,12 @@ t_setup_via_http_api_and_publish(Config) ->
         create_bridge_http(MongoConfig)
     ),
     Val = erlang:unique_integer(),
-    ok = send_message(Config, #{key => Val}),
+    {ok, {ok, _}} =
+        ?wait_async_action(
+            send_message(Config, #{key => Val}),
+            #{?snk_kind := mongo_ee_connector_on_query_return},
+            5_000
+        ),
     ?assertMatch(
         {ok, [#{<<"key">> := Val}]},
         find_all(Config)
@@ -297,7 +339,12 @@ t_payload_template(Config) ->
     {ok, _} = create_bridge(Config, #{<<"payload_template">> => <<"{\"foo\": \"${clientid}\"}">>}),
     Val = erlang:unique_integer(),
     ClientId = emqx_guid:to_hexstr(emqx_guid:gen()),
-    ok = send_message(Config, #{key => Val, clientid => ClientId}),
+    {ok, {ok, _}} =
+        ?wait_async_action(
+            send_message(Config, #{key => Val, clientid => ClientId}),
+            #{?snk_kind := mongo_ee_connector_on_query_return},
+            5_000
+        ),
     ?assertMatch(
         {ok, [#{<<"foo">> := ClientId}]},
         find_all(Config)
@@ -314,11 +361,16 @@ t_collection_template(Config) ->
     ),
     Val = erlang:unique_integer(),
     ClientId = emqx_guid:to_hexstr(emqx_guid:gen()),
-    ok = send_message(Config, #{
+    {ok, {ok, _}} =
-        key => Val,
+        ?wait_async_action(
-        clientid => ClientId,
+            send_message(Config, #{
-        mycollectionvar => <<"mycol">>
+                key => Val,
-    }),
+                clientid => ClientId,
+                mycollectionvar => <<"mycol">>
+            }),
+            #{?snk_kind := mongo_ee_connector_on_query_return},
+            5_000
+        ),
     ?assertMatch(
         {ok, [#{<<"foo">> := ClientId}]},
         find_all(Config)

lib-ee/emqx_ee_bridge/test/emqx_ee_bridge_mysql_SUITE.erl

@@ -45,15 +45,16 @@ all() ->
 groups() ->
     TCs = emqx_common_test_helpers:all(?MODULE),
     NonBatchCases = [t_write_timeout, t_uninitialized_prepared_statement],
+    BatchingGroups = [
+        {group, with_batch},
+        {group, without_batch}
+    ],
+    QueryModeGroups = [{group, async}, {group, sync}],
     [
-        {tcp, [
+        {tcp, QueryModeGroups},
-            {group, with_batch},
+        {tls, QueryModeGroups},
-            {group, without_batch}
+        {async, BatchingGroups},
-        ]},
+        {sync, BatchingGroups},
-        {tls, [
-            {group, with_batch},
-            {group, without_batch}
-        ]},
         {with_batch, TCs -- NonBatchCases},
         {without_batch, TCs}
     ].
@@ -65,7 +66,6 @@ init_per_group(tcp, Config) ->
         {mysql_host, MysqlHost},
         {mysql_port, MysqlPort},
         {enable_tls, false},
-        {query_mode, sync},
         {proxy_name, "mysql_tcp"}
         | Config
     ];
@@ -76,10 +76,13 @@ init_per_group(tls, Config) ->
         {mysql_host, MysqlHost},
         {mysql_port, MysqlPort},
         {enable_tls, true},
-        {query_mode, sync},
         {proxy_name, "mysql_tls"}
         | Config
     ];
+init_per_group(async, Config) ->
+    [{query_mode, async} | Config];
+init_per_group(sync, Config) ->
+    [{query_mode, sync} | Config];
 init_per_group(with_batch, Config0) ->
     Config = [{batch_size, 100} | Config0],
     common_init(Config);
@@ -99,6 +102,7 @@ end_per_group(_Group, _Config) ->
     ok.
 
 init_per_suite(Config) ->
+    emqx_common_test_helpers:clear_screen(),
     Config.
 
 end_per_suite(_Config) ->
@@ -109,6 +113,7 @@ end_per_suite(_Config) ->
 init_per_testcase(_Testcase, Config) ->
     connect_and_clear_table(Config),
     delete_bridge(Config),
+    snabbkaffe:start_trace(),
     Config.
 
 end_per_testcase(_Testcase, Config) ->
@@ -237,6 +242,25 @@ query_resource(Config, Request) ->
     ResourceID = emqx_bridge_resource:resource_id(BridgeType, Name),
     emqx_resource:query(ResourceID, Request, #{timeout => 500}).
 
+query_resource_async(Config, Request) ->
+    Name = ?config(mysql_name, Config),
+    BridgeType = ?config(mysql_bridge_type, Config),
+    Ref = alias([reply]),
+    AsyncReplyFun = fun(Result) -> Ref ! {result, Ref, Result} end,
+    ResourceID = emqx_bridge_resource:resource_id(BridgeType, Name),
+    Return = emqx_resource:query(ResourceID, Request, #{
+        timeout => 500, async_reply_fun => {AsyncReplyFun, []}
+    }),
+    {Return, Ref}.
+
+receive_result(Ref, Timeout) ->
+    receive
+        {result, Ref, Result} ->
+            {ok, Result}
+    after Timeout ->
+        timeout
+    end.
+
 unprepare(Config, Key) ->
     Name = ?config(mysql_name, Config),
     BridgeType = ?config(mysql_bridge_type, Config),
@@ -409,17 +433,29 @@ t_write_failure(Config) ->
     Val = integer_to_binary(erlang:unique_integer()),
     SentData = #{payload => Val, timestamp => 1668602148000},
     ?check_trace(
-        emqx_common_test_helpers:with_failure(down, ProxyName, ProxyHost, ProxyPort, fun() ->
+        begin
-            case QueryMode of
+            %% for some unknown reason, `?wait_async_action' and `subscribe'
-                sync ->
+            %% hang and timeout if called inside `with_failure', but the event
-                    ?assertMatch(
+            %% happens and is emitted after the test pid dies!?
-                        {error, {resource_error, #{reason := timeout}}},
+            {ok, SRef} = snabbkaffe:subscribe(
+                ?match_event(#{?snk_kind := buffer_worker_flush_nack}),
+                2_000
+            ),
+            emqx_common_test_helpers:with_failure(down, ProxyName, ProxyHost, ProxyPort, fun() ->
+                case QueryMode of
+                    sync ->
+                        ?assertMatch(
+                            {error, {resource_error, #{reason := timeout}}},
+                            send_message(Config, SentData)
+                        );
+                    async ->
                         send_message(Config, SentData)
-                    );
+                end,
-                async ->
+                ?assertMatch({ok, [#{result := {error, _}}]}, snabbkaffe:receive_events(SRef)),
-                    send_message(Config, SentData)
+                ok
-            end
+            end),
-        end),
+            ok
+        end,
         fun(Trace0) ->
             ct:pal("trace: ~p", [Trace0]),
             Trace = ?of_kind(buffer_worker_flush_nack, Trace0),
@@ -443,27 +479,52 @@ t_write_timeout(Config) ->
     ProxyName = ?config(proxy_name, Config),
     ProxyPort = ?config(proxy_port, Config),
     ProxyHost = ?config(proxy_host, Config),
+    QueryMode = ?config(query_mode, Config),
     {ok, _} = create_bridge(Config),
     Val = integer_to_binary(erlang:unique_integer()),
     SentData = #{payload => Val, timestamp => 1668602148000},
     Timeout = 1000,
+    %% for some unknown reason, `?wait_async_action' and `subscribe'
+    %% hang and timeout if called inside `with_failure', but the event
+    %% happens and is emitted after the test pid dies!?
+    {ok, SRef} = snabbkaffe:subscribe(
+        ?match_event(#{?snk_kind := buffer_worker_flush_nack}),
+        2 * Timeout
+    ),
     emqx_common_test_helpers:with_failure(timeout, ProxyName, ProxyHost, ProxyPort, fun() ->
-        ?assertMatch(
+        case QueryMode of
-            {error, {resource_error, #{reason := timeout}}},
+            sync ->
-            query_resource(Config, {send_message, SentData, [], Timeout})
+                ?assertMatch(
-        )
+                    {error, {resource_error, #{reason := timeout}}},
+                    query_resource(Config, {send_message, SentData, [], Timeout})
+                );
+            async ->
+                query_resource(Config, {send_message, SentData, [], Timeout}),
+                ok
+        end,
+        ok
     end),
+    ?assertMatch({ok, [#{result := {error, _}}]}, snabbkaffe:receive_events(SRef)),
     ok.
 
 t_simple_sql_query(Config) ->
+    QueryMode = ?config(query_mode, Config),
+    BatchSize = ?config(batch_size, Config),
+    IsBatch = BatchSize > 1,
     ?assertMatch(
         {ok, _},
         create_bridge(Config)
     ),
     Request = {sql, <<"SELECT count(1) AS T">>},
-    Result = query_resource(Config, Request),
+    Result =
-    BatchSize = ?config(batch_size, Config),
+        case QueryMode of
-    IsBatch = BatchSize > 1,
+            sync ->
+                query_resource(Config, Request);
+            async ->
+                {_, Ref} = query_resource_async(Config, Request),
+                {ok, Res} = receive_result(Ref, 2_000),
+                Res
+        end,
     case IsBatch of
         true -> ?assertEqual({error, {unrecoverable_error, batch_select_not_implemented}}, Result);
         false -> ?assertEqual({ok, [<<"T">>], [[1]]}, Result)
@@ -471,25 +532,37 @@ t_simple_sql_query(Config) ->
     ok.
 
 t_missing_data(Config) ->
+    BatchSize = ?config(batch_size, Config),
+    IsBatch = BatchSize > 1,
     ?assertMatch(
         {ok, _},
         create_bridge(Config)
     ),
-    Result = send_message(Config, #{}),
+    {ok, SRef} = snabbkaffe:subscribe(
-    BatchSize = ?config(batch_size, Config),
+        ?match_event(#{?snk_kind := buffer_worker_flush_ack}),
-    IsBatch = BatchSize > 1,
+        2_000
+    ),
+    send_message(Config, #{}),
+    {ok, [Event]} = snabbkaffe:receive_events(SRef),
     case IsBatch of
         true ->
             ?assertMatch(
-                {error,
+                #{
-                    {unrecoverable_error,
+                    result :=
-                        {1292, _, <<"Truncated incorrect DOUBLE value: 'undefined'">>}}},
+                        {error,
-                Result
+                            {unrecoverable_error,
+                                {1292, _, <<"Truncated incorrect DOUBLE value: 'undefined'">>}}}
+                },
+                Event
             );
         false ->
             ?assertMatch(
-                {error, {unrecoverable_error, {1048, _, <<"Column 'arrived' cannot be null">>}}},
+                #{
-                Result
+                    result :=
+                        {error,
+                            {unrecoverable_error, {1048, _, <<"Column 'arrived' cannot be null">>}}}
+                },
+                Event
             )
     end,
     ok.
@@ -500,14 +573,22 @@ t_bad_sql_parameter(Config) ->
         create_bridge(Config)
     ),
     Request = {sql, <<"">>, [bad_parameter]},
-    Result = query_resource(Config, Request),
+    {_, {ok, Event}} =
+        ?wait_async_action(
+            query_resource(Config, Request),
+            #{?snk_kind := buffer_worker_flush_ack},
+            2_000
+        ),
     BatchSize = ?config(batch_size, Config),
     IsBatch = BatchSize > 1,
     case IsBatch of
         true ->
-            ?assertEqual({error, {unrecoverable_error, invalid_request}}, Result);
+            ?assertMatch(#{result := {error, {unrecoverable_error, invalid_request}}}, Event);
         false ->
-            ?assertEqual({error, {unrecoverable_error, {invalid_params, [bad_parameter]}}}, Result)
+            ?assertMatch(
+                #{result := {error, {unrecoverable_error, {invalid_params, [bad_parameter]}}}},
+                Event
+            )
     end,
     ok.
 
@@ -515,7 +596,12 @@ t_nasty_sql_string(Config) ->
     ?assertMatch({ok, _}, create_bridge(Config)),
     Payload = list_to_binary(lists:seq(0, 255)),
     Message = #{payload => Payload, timestamp => erlang:system_time(millisecond)},
-    Result = send_message(Config, Message),
+    {Result, {ok, _}} =
+        ?wait_async_action(
+            send_message(Config, Message),
+            #{?snk_kind := mysql_connector_query_return},
+            1_000
+        ),
     ?assertEqual(ok, Result),
     ?assertMatch(
         {ok, [<<"payload">>], [[Payload]]},
@@ -561,12 +647,22 @@ t_unprepared_statement_query(Config) ->
         create_bridge(Config)
     ),
     Request = {prepared_query, unprepared_query, []},
-    Result = query_resource(Config, Request),
+    {_, {ok, Event}} =
+        ?wait_async_action(
+            query_resource(Config, Request),
+            #{?snk_kind := buffer_worker_flush_ack},
+            2_000
+        ),
     BatchSize = ?config(batch_size, Config),
     IsBatch = BatchSize > 1,
     case IsBatch of
-        true -> ?assertEqual({error, {unrecoverable_error, invalid_request}}, Result);
+        true ->
-        false -> ?assertEqual({error, {unrecoverable_error, prepared_statement_invalid}}, Result)
+            ?assertMatch(#{result := {error, {unrecoverable_error, invalid_request}}}, Event);
+        false ->
+            ?assertMatch(
+                #{result := {error, {unrecoverable_error, prepared_statement_invalid}}},
+                Event
+            )
     end,
     ok.
 
@@ -582,7 +678,13 @@ t_uninitialized_prepared_statement(Config) ->
     unprepare(Config, send_message),
     ?check_trace(
         begin
-            ?assertEqual(ok, send_message(Config, SentData)),
+            {Res, {ok, _}} =
+                ?wait_async_action(
+                    send_message(Config, SentData),
+                    #{?snk_kind := mysql_connector_query_return},
+                    2_000
+                ),
+            ?assertEqual(ok, Res),
             ok
         end,
         fun(Trace) ->

lib-ee/emqx_ee_bridge/test/emqx_ee_bridge_pgsql_SUITE.erl

@@ -42,19 +42,18 @@ all() ->
 groups() ->
     TCs = emqx_common_test_helpers:all(?MODULE),
     NonBatchCases = [t_write_timeout],
+    BatchVariantGroups = [
+        {group, with_batch},
+        {group, without_batch},
+        {group, matrix},
+        {group, timescale}
+    ],
+    QueryModeGroups = [{async, BatchVariantGroups}, {sync, BatchVariantGroups}],
     [
-        {tcp, [
+        {tcp, QueryModeGroups},
-            {group, with_batch},
+        {tls, QueryModeGroups},
-            {group, without_batch},
+        {async, BatchVariantGroups},
-            {group, matrix},
+        {sync, BatchVariantGroups},
-            {group, timescale}
-        ]},
-        {tls, [
-            {group, with_batch},
-            {group, without_batch},
-            {group, matrix},
-            {group, timescale}
-        ]},
         {with_batch, TCs -- NonBatchCases},
         {without_batch, TCs},
         {matrix, [t_setup_via_config_and_publish, t_setup_via_http_api_and_publish]},
@@ -68,7 +67,6 @@ init_per_group(tcp, Config) ->
         {pgsql_host, Host},
         {pgsql_port, Port},
         {enable_tls, false},
-        {query_mode, sync},
         {proxy_name, "pgsql_tcp"}
         | Config
     ];
@@ -79,10 +77,13 @@ init_per_group(tls, Config) ->
         {pgsql_host, Host},
         {pgsql_port, Port},
         {enable_tls, true},
-        {query_mode, sync},
         {proxy_name, "pgsql_tls"}
         | Config
     ];
+init_per_group(async, Config) ->
+    [{query_mode, async} | Config];
+init_per_group(sync, Config) ->
+    [{query_mode, sync} | Config];
 init_per_group(with_batch, Config0) ->
     Config = [{enable_batch, true} | Config0],
     common_init(Config);
@@ -118,6 +119,7 @@ end_per_suite(_Config) ->
 init_per_testcase(_Testcase, Config) ->
     connect_and_clear_table(Config),
     delete_bridge(Config),
+    snabbkaffe:start_trace(),
     Config.
 
 end_per_testcase(_Testcase, Config) ->
@@ -221,9 +223,13 @@ parse_and_check(ConfigString, BridgeType, Name) ->
     Config.
 
 create_bridge(Config) ->
+    create_bridge(Config, _Overrides = #{}).
+
+create_bridge(Config, Overrides) ->
     BridgeType = ?config(pgsql_bridge_type, Config),
     Name = ?config(pgsql_name, Config),
-    PGConfig = ?config(pgsql_config, Config),
+    PGConfig0 = ?config(pgsql_config, Config),
+    PGConfig = emqx_map_lib:deep_merge(PGConfig0, Overrides),
     emqx_bridge:create(BridgeType, Name, PGConfig).
 
 delete_bridge(Config) ->
@@ -251,6 +257,27 @@ query_resource(Config, Request) ->
     ResourceID = emqx_bridge_resource:resource_id(BridgeType, Name),
     emqx_resource:query(ResourceID, Request, #{timeout => 1_000}).
 
+query_resource_async(Config, Request) ->
+    Name = ?config(pgsql_name, Config),
+    BridgeType = ?config(pgsql_bridge_type, Config),
+    Ref = alias([reply]),
+    AsyncReplyFun = fun(Result) -> Ref ! {result, Ref, Result} end,
+    ResourceID = emqx_bridge_resource:resource_id(BridgeType, Name),
+    Return = emqx_resource:query(ResourceID, Request, #{
+        timeout => 500, async_reply_fun => {AsyncReplyFun, []}
+    }),
+    {Return, Ref}.
+
+receive_result(Ref, Timeout) ->
+    receive
+        {result, Ref, Result} ->
+            {ok, Result};
+        {Ref, Result} ->
+            {ok, Result}
+    after Timeout ->
+        timeout
+    end.
+
 connect_direct_pgsql(Config) ->
     Opts = #{
         host => ?config(pgsql_host, Config),
@@ -308,11 +335,12 @@ t_setup_via_config_and_publish(Config) ->
     SentData = #{payload => Val, timestamp => 1668602148000},
     ?check_trace(
         begin
-            ?wait_async_action(
+            {_, {ok, _}} =
-                ?assertEqual({ok, 1}, send_message(Config, SentData)),
+                ?wait_async_action(
-                #{?snk_kind := pgsql_connector_query_return},
+                    send_message(Config, SentData),
-                10_000
+                    #{?snk_kind := pgsql_connector_query_return},
-            ),
+                    10_000
+                ),
             ?assertMatch(
                 Val,
                 connect_and_get_payload(Config)
@@ -336,6 +364,7 @@ t_setup_via_http_api_and_publish(Config) ->
     BridgeType = ?config(pgsql_bridge_type, Config),
     Name = ?config(pgsql_name, Config),
     PgsqlConfig0 = ?config(pgsql_config, Config),
+    QueryMode = ?config(query_mode, Config),
     PgsqlConfig = PgsqlConfig0#{
         <<"name">> => Name,
         <<"type">> => BridgeType
@@ -348,11 +377,18 @@ t_setup_via_http_api_and_publish(Config) ->
     SentData = #{payload => Val, timestamp => 1668602148000},
     ?check_trace(
         begin
-            ?wait_async_action(
+            {Res, {ok, _}} =
-                ?assertEqual({ok, 1}, send_message(Config, SentData)),
+                ?wait_async_action(
-                #{?snk_kind := pgsql_connector_query_return},
+                    send_message(Config, SentData),
-                10_000
+                    #{?snk_kind := pgsql_connector_query_return},
-            ),
+                    10_000
+                ),
+            case QueryMode of
+                async ->
+                    ok;
+                sync ->
+                    ?assertEqual({ok, 1}, Res)
+            end,
             ?assertMatch(
                 Val,
                 connect_and_get_payload(Config)
@@ -457,28 +493,71 @@ t_write_timeout(Config) ->
     ProxyName = ?config(proxy_name, Config),
     ProxyPort = ?config(proxy_port, Config),
     ProxyHost = ?config(proxy_host, Config),
-    {ok, _} = create_bridge(Config),
+    QueryMode = ?config(query_mode, Config),
+    {ok, _} = create_bridge(
+        Config,
+        #{
+            <<"resource_opts">> => #{
+                <<"request_timeout">> => 500,
+                <<"resume_interval">> => 100,
+                <<"health_check_interval">> => 100
+            }
+        }
+    ),
     Val = integer_to_binary(erlang:unique_integer()),
     SentData = #{payload => Val, timestamp => 1668602148000},
-    Timeout = 1000,
+    {ok, SRef} = snabbkaffe:subscribe(
-    emqx_common_test_helpers:with_failure(timeout, ProxyName, ProxyHost, ProxyPort, fun() ->
+        ?match_event(#{?snk_kind := call_query_enter}),
-        ?assertMatch(
+        2_000
-            {error, {resource_error, #{reason := timeout}}},
+    ),
-            query_resource(Config, {send_message, SentData, [], Timeout})
+    Res0 =
-        )
+        emqx_common_test_helpers:with_failure(timeout, ProxyName, ProxyHost, ProxyPort, fun() ->
-    end),
+            Res1 =
+                case QueryMode of
+                    async ->
+                        query_resource_async(Config, {send_message, SentData});
+                    sync ->
+                        query_resource(Config, {send_message, SentData})
+                end,
+            ?assertMatch({ok, [_]}, snabbkaffe:receive_events(SRef)),
+            Res1
+        end),
+    case Res0 of
+        {_, Ref} when is_reference(Ref) ->
+            case receive_result(Ref, 15_000) of
+                {ok, Res} ->
+                    ?assertMatch({error, {unrecoverable_error, _}}, Res);
+                timeout ->
+                    ct:pal("mailbox:\n  ~p", [process_info(self(), messages)]),
+                    ct:fail("no response received")
+            end;
+        _ ->
+            ?assertMatch({error, {resource_error, #{reason := timeout}}}, Res0)
+    end,
     ok.
 
 t_simple_sql_query(Config) ->
+    EnableBatch = ?config(enable_batch, Config),
+    QueryMode = ?config(query_mode, Config),
     ?assertMatch(
         {ok, _},
         create_bridge(Config)
     ),
     Request = {sql, <<"SELECT count(1) AS T">>},
-    Result = query_resource(Config, Request),
+    Result =
-    case ?config(enable_batch, Config) of
+        case QueryMode of
-        true -> ?assertEqual({error, {unrecoverable_error, batch_prepare_not_implemented}}, Result);
+            sync ->
-        false -> ?assertMatch({ok, _, [{1}]}, Result)
+                query_resource(Config, Request);
+            async ->
+                {_, Ref} = query_resource_async(Config, Request),
+                {ok, Res} = receive_result(Ref, 2_000),
+                Res
+        end,
+    case EnableBatch of
+        true ->
+            ?assertEqual({error, {unrecoverable_error, batch_prepare_not_implemented}}, Result);
+        false ->
+            ?assertMatch({ok, _, [{1}]}, Result)
     end,
     ok.
 
@@ -487,21 +566,40 @@ t_missing_data(Config) ->
         {ok, _},
         create_bridge(Config)
     ),
-    Result = send_message(Config, #{}),
+    {_, {ok, Event}} =
+        ?wait_async_action(
+            send_message(Config, #{}),
+            #{?snk_kind := buffer_worker_flush_ack},
+            2_000
+        ),
     ?assertMatch(
-        {error, {unrecoverable_error, {error, error, <<"23502">>, not_null_violation, _, _}}},
+        #{
-        Result
+            result :=
+                {error,
+                    {unrecoverable_error, {error, error, <<"23502">>, not_null_violation, _, _}}}
+        },
+        Event
     ),
     ok.
 
 t_bad_sql_parameter(Config) ->
+    QueryMode = ?config(query_mode, Config),
+    EnableBatch = ?config(enable_batch, Config),
     ?assertMatch(
         {ok, _},
         create_bridge(Config)
     ),
     Request = {sql, <<"">>, [bad_parameter]},
-    Result = query_resource(Config, Request),
+    Result =
-    case ?config(enable_batch, Config) of
+        case QueryMode of
+            sync ->
+                query_resource(Config, Request);
+            async ->
+                {_, Ref} = query_resource_async(Config, Request),
+                {ok, Res} = receive_result(Ref, 2_000),
+                Res
+        end,
+    case EnableBatch of
         true ->
             ?assertEqual({error, {unrecoverable_error, invalid_request}}, Result);
         false ->
@@ -515,5 +613,10 @@ t_nasty_sql_string(Config) ->
     ?assertMatch({ok, _}, create_bridge(Config)),
     Payload = list_to_binary(lists:seq(1, 127)),
     Message = #{payload => Payload, timestamp => erlang:system_time(millisecond)},
-    ?assertEqual({ok, 1}, send_message(Config, Message)),
+    {_, {ok, _}} =
+        ?wait_async_action(
+            send_message(Config, Message),
+            #{?snk_kind := pgsql_connector_query_return},
+            1_000
+        ),
     ?assertEqual(Payload, connect_and_get_payload(Config)).

lib-ee/emqx_ee_bridge/test/emqx_ee_bridge_redis_SUITE.erl

@@ -64,14 +64,17 @@ groups() ->
         {group, batch_on},
         {group, batch_off}
     ],
+    QueryModeGroups = [{group, async}, {group, sync}],
     [
         {rest, TCs},
         {transports, [
             {group, tcp},
             {group, tls}
         ]},
-        {tcp, TypeGroups},
+        {tcp, QueryModeGroups},
-        {tls, TypeGroups},
+        {tls, QueryModeGroups},
+        {async, TypeGroups},
+        {sync, TypeGroups},
         {redis_single, BatchGroups},
         {redis_sentinel, BatchGroups},
         {redis_cluster, BatchGroups},
@@ -79,6 +82,10 @@ groups() ->
         {batch_off, ResourceSpecificTCs}
     ].
 
+init_per_group(async, Config) ->
+    [{query_mode, async} | Config];
+init_per_group(sync, Config) ->
+    [{query_mode, sync} | Config];
 init_per_group(Group, Config) when
     Group =:= redis_single; Group =:= redis_sentinel; Group =:= redis_cluster
 ->
@@ -149,8 +156,9 @@ init_per_testcase(_Testcase, Config) ->
             {skip, "Batching is not supported by 'redis_cluster' bridge type"};
         {RedisType, BatchMode} ->
             Transport = ?config(transport, Config),
+            QueryMode = ?config(query_mode, Config),
             #{RedisType := #{Transport := RedisConnConfig}} = redis_connect_configs(),
-            #{BatchMode := ResourceConfig} = resource_configs(),
+            #{BatchMode := ResourceConfig} = resource_configs(#{query_mode => QueryMode}),
             IsBatch = (BatchMode =:= batch_on),
             BridgeConfig0 = maps:merge(RedisConnConfig, ?COMMON_REDIS_OPTS),
             BridgeConfig1 = BridgeConfig0#{<<"resource_opts">> => ResourceConfig},
@@ -301,7 +309,7 @@ t_permanent_error(_Config) ->
             ?wait_async_action(
                 publish_message(Topic, Payload),
                 #{?snk_kind := redis_ee_connector_send_done},
-                10000
+                10_000
             )
         end,
         fun(Trace) ->
@@ -529,14 +537,14 @@ invalid_command_bridge_config() ->
         <<"command_template">> => [<<"BAD">>, <<"COMMAND">>, <<"${payload}">>]
     }.
 
-resource_configs() ->
+resource_configs(#{query_mode := QueryMode}) ->
     #{
         batch_off => #{
-            <<"query_mode">> => <<"sync">>,
+            <<"query_mode">> => atom_to_binary(QueryMode),
             <<"start_timeout">> => <<"15s">>
         },
         batch_on => #{
-            <<"query_mode">> => <<"sync">>,
+            <<"query_mode">> => atom_to_binary(QueryMode),
             <<"worker_pool_size">> => <<"1">>,
             <<"batch_size">> => integer_to_binary(?BATCH_SIZE),
             <<"start_timeout">> => <<"15s">>,

lib-ee/emqx_ee_bridge/test/emqx_ee_bridge_rocketmq_SUITE.erl

@@ -24,17 +24,24 @@
 
 all() ->
     [
-        {group, with_batch},
+        {group, async},
-        {group, without_batch}
+        {group, sync}
     ].
 
 groups() ->
     TCs = emqx_common_test_helpers:all(?MODULE),
+    BatchingGroups = [{group, with_batch}, {group, without_batch}],
     [
+        {async, BatchingGroups},
+        {sync, BatchingGroups},
         {with_batch, TCs},
         {without_batch, TCs}
     ].
 
+init_per_group(async, Config) ->
+    [{query_mode, async} | Config];
+init_per_group(sync, Config) ->
+    [{query_mode, sync} | Config];
 init_per_group(with_batch, Config0) ->
     Config = [{batch_size, ?BATCH_SIZE} | Config0],
     common_init(Config);
@@ -84,7 +91,6 @@ common_init(ConfigT) ->
     Config0 = [
         {host, Host},
         {port, Port},
-        {query_mode, sync},
         {proxy_name, "rocketmq"}
         | ConfigT
     ],

lib-ee/emqx_ee_bridge/test/emqx_ee_bridge_tdengine_SUITE.erl

@@ -46,18 +46,25 @@
 
 all() ->
     [
-        {group, with_batch},
+        {group, async},
-        {group, without_batch}
+        {group, sync}
     ].
 
 groups() ->
     TCs = emqx_common_test_helpers:all(?MODULE),
     NonBatchCases = [t_write_timeout],
+    BatchingGroups = [{group, with_batch}, {group, without_batch}],
     [
+        {async, BatchingGroups},
+        {sync, BatchingGroups},
         {with_batch, TCs -- NonBatchCases},
         {without_batch, TCs}
     ].
 
+init_per_group(async, Config) ->
+    [{query_mode, async} | Config];
+init_per_group(sync, Config) ->
+    [{query_mode, sync} | Config];
 init_per_group(with_batch, Config0) ->
     Config = [{enable_batch, true} | Config0],
     common_init(Config);
@@ -87,6 +94,7 @@ end_per_suite(_Config) ->
 init_per_testcase(_Testcase, Config) ->
     connect_and_clear_table(Config),
     delete_bridge(Config),
+    snabbkaffe:start_trace(),
     Config.
 
 end_per_testcase(_Testcase, Config) ->
@@ -109,7 +117,6 @@ common_init(ConfigT) ->
     Config0 = [
         {td_host, Host},
         {td_port, Port},
-        {query_mode, sync},
         {proxy_name, "tdengine_restful"}
         | ConfigT
     ],
@@ -194,9 +201,13 @@ parse_and_check(ConfigString, BridgeType, Name) ->
     Config.
 
 create_bridge(Config) ->
+    create_bridge(Config, _Overrides = #{}).
+
+create_bridge(Config, Overrides) ->
     BridgeType = ?config(tdengine_bridge_type, Config),
     Name = ?config(tdengine_name, Config),
-    TDConfig = ?config(tdengine_config, Config),
+    TDConfig0 = ?config(tdengine_config, Config),
+    TDConfig = emqx_map_lib:deep_merge(TDConfig0, Overrides),
     emqx_bridge:create(BridgeType, Name, TDConfig).
 
 delete_bridge(Config) ->
@@ -224,6 +235,27 @@ query_resource(Config, Request) ->
     ResourceID = emqx_bridge_resource:resource_id(BridgeType, Name),
     emqx_resource:query(ResourceID, Request, #{timeout => 1_000}).
 
+query_resource_async(Config, Request) ->
+    Name = ?config(tdengine_name, Config),
+    BridgeType = ?config(tdengine_bridge_type, Config),
+    Ref = alias([reply]),
+    AsyncReplyFun = fun(Result) -> Ref ! {result, Ref, Result} end,
+    ResourceID = emqx_bridge_resource:resource_id(BridgeType, Name),
+    Return = emqx_resource:query(ResourceID, Request, #{
+        timeout => 500, async_reply_fun => {AsyncReplyFun, []}
+    }),
+    {Return, Ref}.
+
+receive_result(Ref, Timeout) ->
+    receive
+        {result, Ref, Result} ->
+            {ok, Result};
+        {Ref, Result} ->
+            {ok, Result}
+    after Timeout ->
+        timeout
+    end.
+
 connect_direct_tdengine(Config) ->
     Opts = [
         {host, to_bin(?config(td_host, Config))},
@@ -273,12 +305,14 @@ t_setup_via_config_and_publish(Config) ->
     SentData = #{payload => ?PAYLOAD, timestamp => 1668602148000},
     ?check_trace(
         begin
-            ?wait_async_action(
+            {_, {ok, #{result := Result}}} =
-                ?assertMatch(
+                ?wait_async_action(
-                    {ok, #{<<"code">> := 0, <<"rows">> := 1}}, send_message(Config, SentData)
+                    send_message(Config, SentData),
+                    #{?snk_kind := buffer_worker_flush_ack},
+                    2_000
                 ),
-                #{?snk_kind := tdengine_connector_query_return},
+            ?assertMatch(
-                10_000
+                {ok, #{<<"code">> := 0, <<"rows">> := 1}}, Result
             ),
             ?assertMatch(
                 ?PAYLOAD,
@@ -297,24 +331,32 @@ t_setup_via_config_and_publish(Config) ->
 t_setup_via_http_api_and_publish(Config) ->
     BridgeType = ?config(tdengine_bridge_type, Config),
     Name = ?config(tdengine_name, Config),
-    PgsqlConfig0 = ?config(tdengine_config, Config),
+    QueryMode = ?config(query_mode, Config),
-    PgsqlConfig = PgsqlConfig0#{
+    TDengineConfig0 = ?config(tdengine_config, Config),
+    TDengineConfig = TDengineConfig0#{
         <<"name">> => Name,
         <<"type">> => BridgeType
     },
     ?assertMatch(
         {ok, _},
-        create_bridge_http(PgsqlConfig)
+        create_bridge_http(TDengineConfig)
     ),
     SentData = #{payload => ?PAYLOAD, timestamp => 1668602148000},
     ?check_trace(
         begin
-            ?wait_async_action(
+            Request = {send_message, SentData},
-                ?assertMatch(
+            Res0 =
-                    {ok, #{<<"code">> := 0, <<"rows">> := 1}}, send_message(Config, SentData)
+                case QueryMode of
-                ),
+                    sync ->
-                #{?snk_kind := tdengine_connector_query_return},
+                        query_resource(Config, Request);
-                10_000
+                    async ->
+                        {_, Ref} = query_resource_async(Config, Request),
+                        {ok, Res} = receive_result(Ref, 2_000),
+                        Res
+                end,
+
+            ?assertMatch(
+                {ok, #{<<"code">> := 0, <<"rows">> := 1}}, Res0
             ),
             ?assertMatch(
                 ?PAYLOAD,
@@ -359,7 +401,14 @@ t_write_failure(Config) ->
     {ok, _} = create_bridge(Config),
     SentData = #{payload => ?PAYLOAD, timestamp => 1668602148000},
     emqx_common_test_helpers:with_failure(down, ProxyName, ProxyHost, ProxyPort, fun() ->
-        ?assertMatch({error, econnrefused}, send_message(Config, SentData))
+        {_, {ok, #{result := Result}}} =
+            ?wait_async_action(
+                send_message(Config, SentData),
+                #{?snk_kind := buffer_worker_flush_ack},
+                2_000
+            ),
+        ?assertMatch({error, econnrefused}, Result),
+        ok
     end),
     ok.
 
@@ -369,24 +418,50 @@ t_write_timeout(Config) ->
     ProxyName = ?config(proxy_name, Config),
     ProxyPort = ?config(proxy_port, Config),
     ProxyHost = ?config(proxy_host, Config),
-    {ok, _} = create_bridge(Config),
+    QueryMode = ?config(query_mode, Config),
+    {ok, _} = create_bridge(
+        Config,
+        #{
+            <<"resource_opts">> => #{
+                <<"request_timeout">> => 500,
+                <<"resume_interval">> => 100,
+                <<"health_check_interval">> => 100
+            }
+        }
+    ),
     SentData = #{payload => ?PAYLOAD, timestamp => 1668602148000},
-    emqx_common_test_helpers:with_failure(timeout, ProxyName, ProxyHost, ProxyPort, fun() ->
+    %% FIXME: TDengine connector hangs indefinetily during
-        ?assertMatch(
+    %% `call_query' while the connection is unresponsive.  Should add
-            {error, {resource_error, #{reason := timeout}}},
+    %% a timeout to `APPLY_RESOURCE' in buffer worker??
-            query_resource(Config, {send_message, SentData})
+    case QueryMode of
-        )
+        sync ->
-    end),
+            emqx_common_test_helpers:with_failure(
+                timeout, ProxyName, ProxyHost, ProxyPort, fun() ->
+                    ?assertMatch(
+                        {error, {resource_error, #{reason := timeout}}},
+                        query_resource(Config, {send_message, SentData})
+                    )
+                end
+            );
+        async ->
+            ct:comment("tdengine connector hangs the buffer worker forever")
+    end,
     ok.
 
 t_simple_sql_query(Config) ->
+    EnableBatch = ?config(enable_batch, Config),
     ?assertMatch(
         {ok, _},
         create_bridge(Config)
     ),
     Request = {query, <<"SELECT count(1) AS T">>},
-    Result = query_resource(Config, Request),
+    {_, {ok, #{result := Result}}} =
-    case ?config(enable_batch, Config) of
+        ?wait_async_action(
+            query_resource(Config, Request),
+            #{?snk_kind := buffer_worker_flush_ack},
+            2_000
+        ),
+    case EnableBatch of
         true ->
             ?assertEqual({error, {unrecoverable_error, batch_prepare_not_implemented}}, Result);
         false ->
@@ -399,7 +474,12 @@ t_missing_data(Config) ->
         {ok, _},
         create_bridge(Config)
     ),
-    Result = send_message(Config, #{}),
+    {_, {ok, #{result := Result}}} =
+        ?wait_async_action(
+            send_message(Config, #{}),
+            #{?snk_kind := buffer_worker_flush_ack},
+            2_000
+        ),
     ?assertMatch(
         {error, #{
             <<"code">> := 534,
@@ -410,13 +490,19 @@ t_missing_data(Config) ->
     ok.
 
 t_bad_sql_parameter(Config) ->
+    EnableBatch = ?config(enable_batch, Config),
     ?assertMatch(
         {ok, _},
         create_bridge(Config)
     ),
     Request = {sql, <<"">>, [bad_parameter]},
-    Result = query_resource(Config, Request),
+    {_, {ok, #{result := Result}}} =
-    case ?config(enable_batch, Config) of
+        ?wait_async_action(
+            query_resource(Config, Request),
+            #{?snk_kind := buffer_worker_flush_ack},
+            2_000
+        ),
+    case EnableBatch of
         true ->
             ?assertEqual({error, {unrecoverable_error, invalid_request}}, Result);
         false ->
@@ -443,9 +529,15 @@ t_nasty_sql_string(Config) ->
     % [1]: https://github.com/taosdata/TDengine/blob/066cb34a/source/libs/parser/src/parUtil.c#L279-L301
     Payload = list_to_binary(lists:seq(1, 127)),
     Message = #{payload => Payload, timestamp => erlang:system_time(millisecond)},
+    {_, {ok, #{result := Result}}} =
+        ?wait_async_action(
+            send_message(Config, Message),
+            #{?snk_kind := buffer_worker_flush_ack},
+            2_000
+        ),
     ?assertMatch(
         {ok, #{<<"code">> := 0, <<"rows">> := 1}},
-        send_message(Config, Message)
+        Result
     ),
     ?assertEqual(
         Payload,

lib-ee/emqx_ee_connector/rebar.config

@@ -2,7 +2,7 @@
 {deps, [
   {hstreamdb_erl, {git, "https://github.com/hstreamdb/hstreamdb_erl.git", {tag, "0.2.5"}}},
   {influxdb, {git, "https://github.com/emqx/influxdb-client-erl", {tag, "1.1.9"}}},
-  {tdengine, {git, "https://github.com/emqx/tdengine-client-erl", {tag, "0.1.5"}}},
+  {tdengine, {git, "https://github.com/emqx/tdengine-client-erl", {tag, "0.1.6"}}},
   {clickhouse, {git, "https://github.com/emqx/clickhouse-client-erl", {tag, "0.3"}}},
   {erlcloud, {git, "https://github.com/emqx/erlcloud.git", {tag,"3.5.16-emqx-1"}}},
   {rocketmq, {git, "https://github.com/emqx/rocketmq-client-erl.git", {tag, "v0.5.1"}}},

lib-ee/emqx_ee_connector/src/emqx_ee_connector_mongodb.erl

@@ -60,7 +60,9 @@ on_query(InstanceId, {send_message, Message0}, State) ->
         collection => emqx_plugin_libs_rule:proc_tmpl(CollectionTemplate, Message0)
     },
     Message = render_message(PayloadTemplate, Message0),
-    emqx_connector_mongo:on_query(InstanceId, {send_message, Message}, NewConnectorState);
+    Res = emqx_connector_mongo:on_query(InstanceId, {send_message, Message}, NewConnectorState),
+    ?tp(mongo_ee_connector_on_query_return, #{result => Res}),
+    Res;
 on_query(InstanceId, Request, _State = #{connector_state := ConnectorState}) ->
     emqx_connector_mongo:on_query(InstanceId, Request, ConnectorState).
 

mix.exs

@@ -93,7 +93,7 @@ defmodule EMQXUmbrella.MixProject do
        github: "ninenines/ranch", ref: "a692f44567034dacf5efcaa24a24183788594eb7", override: true},
       # in conflict by grpc and eetcd
       {:gpb, "4.19.5", override: true, runtime: false},
-      {:hackney, github: "benoitc/hackney", tag: "1.18.1", override: true}
+      {:hackney, github: "emqx/hackney", tag: "1.18.1-1", override: true}
     ] ++
       emqx_apps(profile_info, version) ++
       enterprise_deps(profile_info) ++ bcrypt_dep() ++ jq_dep() ++ quicer_dep()

rebar.config

@@ -80,7 +80,7 @@
     , {esasl, {git, "https://github.com/emqx/esasl", {tag, "0.2.0"}}}
     , {jose, {git, "https://github.com/potatosalad/erlang-jose", {tag, "1.11.2"}}}
     , {telemetry, "1.1.0"}
-    , {hackney, {git, "https://github.com/benoitc/hackney", {tag, "1.18.1"}}}
+    , {hackney, {git, "https://github.com/emqx/hackney.git", {tag, "1.18.1-1"}}}
     ]}.
 
 {xref_ignores,