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Use keep_state_and_data in emqx_client to avoid unnecessary var binding

This commit is contained in:
spring2maz 2019-03-05 04:04:20 +01:00
parent 656429fcc1
commit 252b376e48
1 changed files with 22 additions and 19 deletions
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41
src/emqx_client.erl
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@ -743,12 +743,12 @@ waiting_for_connack(EventType, EventContent, State) ->
false -> {stop, connack_timeout}
end.
connected({call, From}, subscriptions, State = #state{subscriptions = Subscriptions}) ->
{keep_state, State, [{reply, From, maps:to_list(Subscriptions)}]};
connected({call, From}, subscriptions, #state{subscriptions = Subscriptions}) ->
{keep_state_and_data, [{reply, From, maps:to_list(Subscriptions)}]};
connected({call, From}, info, State) ->
Info = lists:zip(record_info(fields, state), tl(tuple_to_list(State))),
{keep_state, State, [{reply, From, Info}]};
{keep_state_and_data, [{reply, From, Info}]};
connected({call, From}, pause, State) ->
{keep_state, State#state{paused = true}, [{reply, From, ok}]};
@ -756,11 +756,11 @@ connected({call, From}, pause, State) ->
connected({call, From}, resume, State) ->
{keep_state, State#state{paused = false}, [{reply, From, ok}]};
connected({call, From}, get_properties, State = #state{properties = Properties}) ->
{keep_state, State, [{reply, From, Properties}]};
connected({call, From}, get_properties, #state{properties = Properties}) ->
{keep_state_and_data, [{reply, From, Properties}]};
connected({call, From}, client_id, State = #state{client_id = ClientId}) ->
{keep_state, State, [{reply, From, ClientId}]};
connected({call, From}, client_id, #state{client_id = ClientId}) ->
{keep_state_and_data, [{reply, From, ClientId}]};
connected({call, From}, {set_request_handler, RequestHandler}, State) ->
{keep_state, State#state{request_handler = RequestHandler}, [{reply, From, ok}]};
@ -843,8 +843,8 @@ connected(cast, {pubrel, PacketId, ReasonCode, Properties}, State) ->
connected(cast, {pubcomp, PacketId, ReasonCode, Properties}, State) ->
send_puback(?PUBCOMP_PACKET(PacketId, ReasonCode, Properties), State);
connected(cast, ?PUBLISH_PACKET(_QoS, _PacketId), State = #state{paused = true}) ->
{keep_state, State};
connected(cast, ?PUBLISH_PACKET(_QoS, _PacketId), #state{paused = true}) ->
keep_state_and_data;
connected(cast, Packet = ?PUBLISH_PACKET(?QOS_0, _Topic, _PacketId, Properties, Payload),
State) when Properties =/= undefined ->
@ -897,7 +897,7 @@ connected(cast, ?PUBREL_PACKET(PacketId),
end;
error ->
emqx_logger:warning("Unexpected PUBREL: ~p", [PacketId]),
{keep_state, State}
keep_state_and_data
end;
connected(cast, ?PUBCOMP_PACKET(_PacketId, _ReasonCode, _Properties) = PubComp, State) ->
@ -910,7 +910,8 @@ connected(cast, ?SUBACK_PACKET(PacketId, Properties, ReasonCodes),
%%TODO: Merge reason codes to subscriptions?
Reply = {ok, Properties, ReasonCodes},
{keep_state, NewState, [{reply, From, Reply}]};
false -> {keep_state, State}
false ->
keep_state_and_data
end;
connected(cast, ?UNSUBACK_PACKET(PacketId, Properties, ReasonCodes),
@ -923,16 +924,18 @@ connected(cast, ?UNSUBACK_PACKET(PacketId, Properties, ReasonCodes),
end, Subscriptions, Topics),
{keep_state, NewState#state{subscriptions = Subscriptions1},
[{reply, From, {ok, Properties, ReasonCodes}}]};
false -> {keep_state, State}
false ->
keep_state_and_data
end;
connected(cast, ?PACKET(?PINGRESP), State = #state{pending_calls = []}) ->
{keep_state, State};
connected(cast, ?PACKET(?PINGRESP), #state{pending_calls = []}) ->
keep_state_and_data;
connected(cast, ?PACKET(?PINGRESP), State) ->
case take_call(ping, State) of
{value, #call{from = From}, NewState} ->
{keep_state, NewState, [{reply, From, pong}]};
false -> {keep_state, State}
false ->
keep_state_and_data
end;
connected(cast, ?DISCONNECT_PACKET(ReasonCode, Properties), State) ->
@ -1009,17 +1012,17 @@ handle_event(info, {'EXIT', Owner, Reason}, _, State = #state{owner = Owner}) ->
emqx_logger:debug("[~p] Got EXIT from owner, Reason: ~p", [?MODULE, Reason]),
{stop, {shutdown, Reason}, State};
handle_event(info, {inet_reply, _Sock, ok}, _, State) ->
{keep_state, State};
handle_event(info, {inet_reply, _Sock, ok}, _, _State) ->
keep_state_and_data;
handle_event(info, {inet_reply, _Sock, {error, Reason}}, _, State) ->
emqx_logger:error("[~p] got tcp error: ~p", [?MODULE, Reason]),
{stop, {shutdown, Reason}, State};
handle_event(EventType, EventContent, StateName, StateData) ->
handle_event(EventType, EventContent, StateName, _StateData) ->
emqx_logger:error("State: ~s, Unexpected Event: (~p, ~p)",
[StateName, EventType, EventContent]),
{keep_state, StateData}.
keep_state_and_data.
%% Mandatory callback functions
terminate(Reason, _StateName, State = #state{socket = Socket}) ->