feat(bridges): add start/stop/restart HTTP APIs for bridges

apps/emqx_bridge/src/emqx_bridge_api.erl

@@ -23,6 +23,7 @@
         , list_local_bridges/1
         , crud_bridges_cluster/2
         , crud_bridges/3
+        , manage_bridges/2
         ]).
 
 -define(TYPES, [mqtt]).
@@ -113,14 +114,24 @@ crud_bridges_apis() ->
 operation_apis() ->
     Metadata = #{
         post => #{
-            description => <<"Restart bridges on all nodes in the cluster">>,
+            description => <<"Start/Stop/Restart bridges on a specific node">>,
             parameters => [
+                param_path_node(),
                 param_path_id(),
                 param_path_operation()],
             responses => #{
                 <<"500">> => emqx_mgmt_util:error_schema(<<"Operation Failed">>, ['INTERNAL_ERROR']),
                 <<"200">> => emqx_mgmt_util:schema(<<"Operation success">>)}}},
-    {"/bridges/:id/operation/:operation", Metadata, manage_bridges}.
+    {"/nodes/:node/bridges/:id/operation/:operation", Metadata, manage_bridges}.
+
+param_path_node() ->
+    #{
+        name => node,
+        in => path,
+        schema => #{type => string},
+        required => true,
+        example => node()
+    }.
 
 param_path_id() ->
     #{
@@ -192,6 +203,20 @@ crud_bridges(_, delete, #{bindings := #{id := Id}}) ->
                 {500, #{code => 102, message => emqx_resource_api:stringnify(Reason)}}
         end).
 
+manage_bridges(post, #{bindings := #{node := Node, id := Id, operation := Op}}) ->
+    OperFun =
+        fun (<<"start">>) -> start_bridge;
+            (<<"stop">>) -> stop_bridge;
+            (<<"restart">>) -> restart_bridge
+        end,
+    ?TRY_PARSE_ID(Id,
+        case rpc_call(binary_to_atom(Node, latin1), emqx_bridge, OperFun(Op),
+                [BridgeType, BridgeName]) of
+            ok -> {200};
+            {error, Reason} ->
+                {500, #{code => 102, message => emqx_resource_api:stringnify(Reason)}}
+        end).
+
 format_resp(#{id := Id, raw_config := RawConf, resource_data := #{mod := Mod, status := Status}}) ->
     IsConnected = fun(started) -> true; (_) -> false end,
     RawConf#{
@@ -202,7 +227,12 @@ format_resp(#{id := Id, raw_config := RawConf, resource_data := #{mod := Mod, st
     }.
 
 rpc_call(Node, Fun, Args) ->
-    case rpc:call(Node, ?MODULE, Fun, Args) of
+    rpc_call(Node, ?MODULE, Fun, Args).
+
+rpc_call(Node, Mod, Fun, Args) when Node =:= node() ->
+    apply(Mod, Fun, Args);
+rpc_call(Node, Mod, Fun, Args) ->
+    case rpc:call(Node, Mod, Fun, Args) of
         {badrpc, Reason} -> {error, Reason};
         Res -> Res
     end.

apps/emqx_bridge/src/emqx_bridge_schema.erl

@@ -8,10 +8,7 @@
 roots() -> ["bridges"].
 
 fields("bridges") ->
-    [{mqtt, hoconsc:ref(?MODULE, "mqtt")}];
-
-fields("mqtt") ->
-    [{"$name", hoconsc:ref(?MODULE, "mqtt_bridge")}];
+    [{mqtt, hoconsc:mk(hoconsc:map(name, hoconsc:ref(?MODULE, "mqtt_bridge")))}];
 
 fields("mqtt_bridge") ->
     emqx_connector_mqtt:fields("config").

apps/emqx_connector/src/emqx_connector_mqtt.erl

@@ -101,20 +101,21 @@ on_start(InstId, Conf) ->
                 end
         end, InitRes, InOutConfigs).
 
-on_stop(InstId, #{}) ->
+on_stop(InstId, #{sub_bridges := NameList}) ->
     logger:info("stopping mqtt connector: ~p", [InstId]),
-    case ?MODULE:drop_bridge(InstId) of
-        ok -> ok;
-        {error, not_found} -> ok;
-        {error, Reason} ->
-            logger:error("stop bridge failed, error: ~p", [Reason])
-    end.
+    lists:foreach(fun(Name) ->
+            case ?MODULE:drop_bridge(Name) of
+                ok -> ok;
+                {error, not_found} -> ok;
+                {error, Reason} ->
+                    logger:error("stop channel ~p failed, error: ~p", [Name, Reason])
+            end
+        end, NameList).
 
 %% TODO: let the emqx_resource trigger on_query/4 automatically according to the
 %%  `message_in` and `message_out` config
-on_query(InstId, {create_channel, Conf}, _AfterQuery, #{name_prefix := Prefix,
+on_query(_InstId, {create_channel, Conf}, _AfterQuery, #{name_prefix := Prefix,
         baisc_conf := BasicConf}) ->
-    logger:debug("create channel to connector: ~p, conf: ~p", [InstId, Conf]),
     create_channel(Conf, Prefix, BasicConf);
 on_query(InstId, {publish_to_local, Msg}, _AfterQuery, _State) ->
     logger:debug("publish to local node, connector: ~p, msg: ~p", [InstId, Msg]);
@@ -139,14 +140,16 @@ check_channel_id_dup(Confs) ->
 
 %% this is an `message_in` bridge
 create_channel(#{subscribe_remote_topic := _, id := Id} = InConf, NamePrefix, BasicConf) ->
-    logger:info("creating 'message_in' channel for: ~p", [Id]),
+    Name = bridge_name(NamePrefix, Id),
+    logger:info("creating 'message_in' channel ~p", [Name]),
     create_sub_bridge(BasicConf#{
-        name => bridge_name(NamePrefix, Id),
+        name => Name,
         clientid => clientid(Id),
         subscriptions => InConf, forwards => undefined});
 %% this is an `message_out` bridge
 create_channel(#{subscribe_local_topic := _, id := Id} = OutConf, NamePrefix, BasicConf) ->
-    logger:info("creating 'message_out' channel for: ~p", [Id]),
+    Name = bridge_name(NamePrefix, Id),
+    logger:info("creating 'message_out' channel ~p", [Name]),
     create_sub_bridge(BasicConf#{
         name => bridge_name(NamePrefix, Id),
         clientid => clientid(Id),