fix(dynamo): remove all async callbacks of the Dynamo connector

lib-ee/emqx_ee_connector/src/emqx_ee_connector_dynamo.erl

@@ -22,8 +22,6 @@
     on_stop/2,
     on_query/3,
     on_batch_query/3,
-    on_query_async/4,
-    on_batch_query_async/4,
     on_get_status/2
 ]).
 
@@ -60,7 +58,7 @@ fields(config) ->
 %% `emqx_resource' API
 %%========================================================================================
 
-callback_mode() -> async_if_possible.
+callback_mode() -> always_sync.
 
 is_buffer_supported() -> false.
 
@@ -115,32 +113,15 @@ on_stop(InstanceId, #{poolname := PoolName} = _State) ->
     emqx_plugin_libs_pool:stop_pool(PoolName).
 
 on_query(InstanceId, Query, State) ->
-    do_query(InstanceId, Query, sync, State).
+    do_query(InstanceId, Query, State).
-
-on_query_async(InstanceId, Query, ReplyCtx, State) ->
-    do_query(
-        InstanceId,
-        Query,
-        {async, ReplyCtx},
-        State
-    ).
 
 %% we only support batch insert
 on_batch_query(InstanceId, [{send_message, _} | _] = Query, State) ->
-    do_query(InstanceId, Query, sync, State);
+    do_query(InstanceId, Query, State);
 on_batch_query(_InstanceId, Query, _State) ->
     {error, {unrecoverable_error, {invalid_request, Query}}}.
 
 %% we only support batch insert
-on_batch_query_async(InstanceId, [{send_message, _} | _] = Query, ReplyCtx, State) ->
-    do_query(
-        InstanceId,
-        Query,
-        {async, ReplyCtx},
-        State
-    );
-on_batch_query_async(_InstanceId, Query, _Reply, _State) ->
-    {error, {unrecoverable_error, {invalid_request, Query}}}.
 
 on_get_status(_InstanceId, #{poolname := Pool}) ->
     Health = emqx_plugin_libs_pool:health_check_ecpool_workers(
@@ -158,7 +139,6 @@ status_result(_Status = false) -> connecting.
 do_query(
     InstanceId,
     Query,
-    ApplyMode,
     #{poolname := PoolName, templates := Templates, table := Table} = State
 ) ->
     ?TRACE(
@@ -168,7 +148,7 @@ do_query(
     ),
     Result = ecpool:pick_and_do(
         PoolName,
-        {emqx_ee_connector_dynamo_client, query, [ApplyMode, Table, Query, Templates]},
+        {emqx_ee_connector_dynamo_client, query, [Table, Query, Templates]},
         no_handover
     ),
 

lib-ee/emqx_ee_connector/src/emqx_ee_connector_dynamo_client.erl

@@ -9,7 +9,6 @@
 -export([
     start_link/1,
     is_connected/1,
-    query/5,
     query/4
 ]).
 
@@ -28,22 +27,22 @@
 -export([execute/2]).
 -endif.
 
+%% The default timeout for DynamoDB REST API calls is 10 seconds,
+%% but this value for `gen_server:call` is 5s,
+%% so we should pass the timeout to `gen_server:call`
+-define(HEALTH_CHECK_TIMEOUT, 10000).
+
 %%%===================================================================
 %%% API
 %%%===================================================================
 is_connected(Pid) ->
     try
-        gen_server:call(Pid, is_connected)
+        gen_server:call(Pid, is_connected, ?HEALTH_CHECK_TIMEOUT)
     catch
         _:_ ->
             false
     end.
 
-query(Pid, sync, Table, Query, Templates) ->
-    query(Pid, Table, Query, Templates);
-query(Pid, {async, ReplyCtx}, Table, Query, Templates) ->
-    gen_server:cast(Pid, {query, Table, Query, Templates, ReplyCtx}).
-
 query(Pid, Table, Query, Templates) ->
     gen_server:call(Pid, {query, Table, Query, Templates}, infinity).