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fix

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anlicheng 2026-04-19 16:49:52 +08:00
parent 1f4c17f118
commit 94efb79eab
1 changed files with 113 additions and 99 deletions
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212
src/endpoint/endpoint_mqtt.erl
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@ -15,7 +15,8 @@
-export([start_link/2]). -export([start_link/2]).
%% gen_statem callbacks %% gen_statem callbacks
-export([callback_mode/0, init/1, handle_event/4, terminate/3, code_change/4]). -export([callback_mode/0, init/1, terminate/3, code_change/4]).
-export([disconnected/3, connected/3]).
%% 消息重发间隔 %% 消息重发间隔
-define(RETRY_INTERVAL, 15000). -define(RETRY_INTERVAL, 15000).
@ -28,15 +29,12 @@
inflight = #{} inflight = #{}
}). }).
-type mqtt_state() :: disconnected | connecting | connected. -type mqtt_state() :: disconnected | connected.
%%%=================================================================== %%%===================================================================
%%% API %%% API
%%%=================================================================== %%%===================================================================
%% @doc Creates a gen_statem process which calls Module:init/1 to
%% initialize. To ensure a synchronized start-up procedure, this
%% function does not return until Module:init/1 has returned.
-spec start_link(LocalName :: atom(), Endpoint :: #endpoint{}) -> -spec start_link(LocalName :: atom(), Endpoint :: #endpoint{}) ->
{ok, pid()} | ignore | {error, term()}. {ok, pid()} | ignore | {error, term()}.
start_link(LocalName, Endpoint = #endpoint{}) when is_atom(LocalName) -> start_link(LocalName, Endpoint = #endpoint{}) when is_atom(LocalName) ->
@ -46,14 +44,10 @@ start_link(LocalName, Endpoint = #endpoint{}) when is_atom(LocalName) ->
%%% gen_statem callbacks %%% gen_statem callbacks
%%%=================================================================== %%%===================================================================
-spec callback_mode() -> handle_event_function. -spec callback_mode() -> state_functions.
callback_mode() -> callback_mode() ->
handle_event_function. state_functions.
%% @private
%% @doc Whenever a gen_statem is started using gen_statem:start/[3,4] or
%% gen_statem:start_link/[3,4], this function is called by the new
%% process to initialize.
-spec init(term()) -> gen_statem:init_result(mqtt_state(), #state{}). -spec init(term()) -> gen_statem:init_result(mqtt_state(), #state{}).
init([Endpoint = #endpoint{matcher = Matcher}]) -> init([Endpoint = #endpoint{matcher = Matcher}]) ->
ok = iot_log:set_metadata(), ok = iot_log:set_metadata(),
@ -62,42 +56,35 @@ init([Endpoint = #endpoint{matcher = Matcher}]) ->
Buffer = endpoint_buffer:new(Endpoint, 10), Buffer = endpoint_buffer:new(Endpoint, 10),
{ok, disconnected, #state{endpoint = Endpoint, buffer = Buffer}, [{next_event, internal, connect}]}. {ok, disconnected, #state{endpoint = Endpoint, buffer = Buffer}, [{next_event, internal, connect}]}.
-spec handle_event(gen_statem:event_type(), term(), mqtt_state(), #state{}) -> -spec disconnected(gen_statem:event_type(), term(), #state{}) ->
gen_statem:event_handler_result(mqtt_state(), #state{}). gen_statem:event_handler_result(mqtt_state(), #state{}).
handle_event({call, From}, get_stat, _StateName, State = #state{buffer = Buffer}) -> disconnected({call, From}, get_stat, State = #state{buffer = Buffer}) ->
Stat = endpoint_buffer:stat(Buffer), reply_stat(From, Buffer, State);
{keep_state, State, [{reply, From, {ok, Stat}}]}; disconnected(cast, {forward, Metric}, State = #state{buffer = Buffer}) ->
handle_event(cast, {forward, Metric}, _StateName, State = #state{buffer = Buffer}) -> forward_metric(Metric, Buffer, State);
NBuffer = endpoint_buffer:append(Metric, Buffer), disconnected(cast, cleanup, State = #state{buffer = Buffer}) ->
{keep_state, State#state{buffer = NBuffer}}; cleanup_buffer(Buffer, State);
handle_event(cast, cleanup, _StateName, #state{buffer = Buffer}) -> disconnected(cast, {reload, NEndpoint = #endpoint{matcher = NMatcher}},
endpoint_buffer:cleanup(Buffer),
keep_state_and_data;
handle_event(cast, {reload, NEndpoint = #endpoint{matcher = NMatcher}}, StateName,
State = #state{endpoint = #endpoint{matcher = Matcher}, conn_pid = ConnPid}) -> State = #state{endpoint = #endpoint{matcher = Matcher}, conn_pid = ConnPid}) ->
ensure_subscription(Matcher, NMatcher), reload_endpoint(Matcher, NMatcher, ConnPid, NEndpoint, State);
stop_mqtt_conn(ConnPid), disconnected(internal, connect, State) ->
NState = State#state{endpoint = NEndpoint, conn_pid = undefined, inflight = #{}},
{next_state, connecting, NState, maybe_connect_actions(StateName)};
handle_event(internal, connect, disconnected, State) ->
{next_state, connecting, State, [{next_event, internal, do_connect}]};
handle_event(internal, connect, connecting, State) ->
{keep_state, State, [{next_event, internal, do_connect}]}; {keep_state, State, [{next_event, internal, do_connect}]};
handle_event(internal, connect, connected, State) -> disconnected(state_timeout, connect, State) ->
{keep_state, State}; {keep_state, State, [{next_event, internal, do_connect}]};
handle_event(internal, do_connect, connecting, disconnected(internal, do_connect,
State = #state{buffer = Buffer, State = #state{
endpoint = #endpoint{ buffer = Buffer,
title = Title, endpoint = #endpoint{
config = #mqtt_endpoint{ title = Title,
host = Host, config = #mqtt_endpoint{
port = Port, host = Host,
username = Username, port = Port,
password = Password, username = Username,
client_id = ClientId password = Password,
} client_id = ClientId
}}) -> }
}
}) ->
logger:debug("[endpoint_mqtt] endpoint: ~ts, create postman", [Title]), logger:debug("[endpoint_mqtt] endpoint: ~ts, create postman", [Title]),
Opts = [ Opts = [
{owner, self()}, {owner, self()},
@ -120,28 +107,41 @@ handle_event(internal, do_connect, connecting,
{next_state, connected, State#state{conn_pid = ConnPid, buffer = NBuffer}}; {next_state, connected, State#state{conn_pid = ConnPid, buffer = NBuffer}};
{error, Reason} -> {error, Reason} ->
logger:warning("[endpoint_mqtt] connect get error: ~p", [Reason]), logger:warning("[endpoint_mqtt] connect get error: ~p", [Reason]),
{next_state, disconnected, State#state{conn_pid = undefined, inflight = #{}}, {keep_state, State#state{conn_pid = undefined, inflight = #{}},
[{state_timeout, ?RETRY_INTERVAL, connect}]} [{state_timeout, ?RETRY_INTERVAL, connect}]}
end; end;
disconnected(info, {next_data, _Id, _Tuple}, State) ->
handle_event(state_timeout, connect, disconnected, State) ->
{next_state, connecting, State, [{next_event, internal, do_connect}]};
handle_event(state_timeout, connect, connecting, State) ->
{keep_state, State, [{next_event, internal, do_connect}]};
%% 离线或连接中时，忽略数据发送逻辑
handle_event(info, {next_data, _Id, _Tuple}, disconnected, State) ->
{keep_state, State}; {keep_state, State};
handle_event(info, {next_data, _Id, _Tuple}, connecting, State) -> disconnected(info, {'EXIT', ConnPid, Reason},
State = #state{endpoint = #endpoint{title = Title}, conn_pid = ConnPid}) ->
logger:warning("[endpoint_mqtt] endpoint: ~p, conn pid exit with reason: ~p", [Title, Reason]),
{keep_state, State#state{conn_pid = undefined, inflight = #{}},
[{state_timeout, ?RETRY_INTERVAL, connect}]};
disconnected(info, Info, State) ->
unknown_info(Info, disconnected, State);
disconnected(EventType, EventContent, State) ->
unknown_event(EventType, EventContent, disconnected, State).
-spec connected(gen_statem:event_type(), term(), #state{}) ->
gen_statem:event_handler_result(mqtt_state(), #state{}).
connected({call, From}, get_stat, State = #state{buffer = Buffer}) ->
reply_stat(From, Buffer, State);
connected(cast, {forward, Metric}, State = #state{buffer = Buffer}) ->
forward_metric(Metric, Buffer, State);
connected(cast, cleanup, State = #state{buffer = Buffer}) ->
cleanup_buffer(Buffer, State);
connected(cast, {reload, NEndpoint = #endpoint{matcher = NMatcher}},
State = #state{endpoint = #endpoint{matcher = Matcher}, conn_pid = ConnPid}) ->
reload_endpoint(Matcher, NMatcher, ConnPid, NEndpoint, State);
connected(internal, connect, State) ->
{keep_state, State}; {keep_state, State};
%% 发送数据到mqtt服务器 connected(info, {next_data, Id, Metric},
handle_event(info, {next_data, Id, Metric}, connected, State = #state{
State = #state{ conn_pid = ConnPid,
conn_pid = ConnPid, buffer = Buffer,
buffer = Buffer, inflight = InFlight,
inflight = InFlight, endpoint = #endpoint{config = #mqtt_endpoint{topic = Topic, qos = Qos}}
endpoint = #endpoint{config = #mqtt_endpoint{topic = Topic, qos = Qos}} }) ->
}) ->
logger:debug("[endpoint_mqtt] will publish topic: ~p, metric: ~p, qos: ~p", [Topic, Metric, Qos]), logger:debug("[endpoint_mqtt] will publish topic: ~p, metric: ~p, qos: ~p", [Topic, Metric, Qos]),
case emqtt:publish(ConnPid, Topic, #{}, Metric, [{qos, Qos}, {retain, true}]) of case emqtt:publish(ConnPid, Topic, #{}, Metric, [{qos, Qos}, {retain, true}]) of
ok -> ok ->
@ -155,17 +155,16 @@ handle_event(info, {next_data, Id, Metric}, connected,
{next_state, disconnected, State#state{conn_pid = undefined, inflight = #{}}, {next_state, disconnected, State#state{conn_pid = undefined, inflight = #{}},
[{state_timeout, ?RETRY_INTERVAL, connect}]} [{state_timeout, ?RETRY_INTERVAL, connect}]}
end; end;
connected(info, {disconnected, ReasonCode, Properties}, State = #state{conn_pid = ConnPid}) ->
handle_event(info, {disconnected, ReasonCode, Properties}, connected, State = #state{conn_pid = ConnPid}) ->
logger:debug("[endpoint_mqtt] Recv a DISONNECT packet - ReasonCode: ~p, Properties: ~p", [ReasonCode, Properties]), logger:debug("[endpoint_mqtt] Recv a DISONNECT packet - ReasonCode: ~p, Properties: ~p", [ReasonCode, Properties]),
stop_mqtt_conn(ConnPid), stop_mqtt_conn(ConnPid),
{next_state, disconnected, State#state{conn_pid = undefined, inflight = #{}}, {next_state, disconnected, State#state{conn_pid = undefined, inflight = #{}},
[{state_timeout, ?RETRY_INTERVAL, connect}]}; [{state_timeout, ?RETRY_INTERVAL, connect}]};
handle_event(info, {publish, Message = #{packet_id := _PacketId, payload := Payload}}, connected, State) -> connected(info, {publish, Message = #{packet_id := _PacketId, payload := Payload}}, State) ->
logger:debug("[endpoint_mqtt] Recv a publish packet: ~p, payload: ~p", [Message, Payload]), logger:debug("[endpoint_mqtt] Recv a publish packet: ~p, payload: ~p", [Message, Payload]),
{keep_state, State}; {keep_state, State};
handle_event(info, {puback, #{packet_id := PacketId}}, connected, connected(info, {puback, #{packet_id := PacketId}},
State = #state{inflight = Inflight, buffer = Buffer}) -> State = #state{inflight = Inflight, buffer = Buffer}) ->
case maps:take(PacketId, Inflight) of case maps:take(PacketId, Inflight) of
{Id, RestInflight} -> {Id, RestInflight} ->
NBuffer = endpoint_buffer:ack(Id, Buffer), NBuffer = endpoint_buffer:ack(Id, Buffer),
@ -173,40 +172,25 @@ handle_event(info, {puback, #{packet_id := PacketId}}, connected,
error -> error ->
{keep_state, State} {keep_state, State}
end; end;
connected(info, {'EXIT', ConnPid, Reason},
%% postman进程挂掉时，重新建立新的 State = #state{endpoint = #endpoint{title = Title}, conn_pid = ConnPid}) ->
handle_event(info, {'EXIT', ConnPid, Reason}, _StateName,
State = #state{endpoint = #endpoint{title = Title}, conn_pid = ConnPid}) ->
logger:warning("[endpoint_mqtt] endpoint: ~p, conn pid exit with reason: ~p", [Title, Reason]), logger:warning("[endpoint_mqtt] endpoint: ~p, conn pid exit with reason: ~p", [Title, Reason]),
{next_state, disconnected, State#state{conn_pid = undefined, inflight = #{}}, {next_state, disconnected, State#state{conn_pid = undefined, inflight = #{}},
[{state_timeout, ?RETRY_INTERVAL, connect}]}; [{state_timeout, ?RETRY_INTERVAL, connect}]};
connected(info, Info, State) ->
unknown_info(Info, connected, State);
connected(EventType, EventContent, State) ->
unknown_event(EventType, EventContent, connected, State).
handle_event(info, Info, StateName, State) -> -spec terminate(term(), mqtt_state(), #state{}) -> term().
logger:warning("[endpoint_mqtt] unknown message: ~p, status: ~p", [Info, StateName]),
{keep_state, State};
handle_event(EventType, EventContent, StateName, State) ->
logger:warning("[endpoint_mqtt] unknown event: ~p, content: ~p, status: ~p", [EventType, EventContent, StateName]),
{keep_state, State}.
%% @private
%% @doc This function is called by a gen_statem when it is about to
%% terminate. It should be the opposite of Module:init/1 and do any
%% necessary cleaning up. When it returns, the gen_statem terminates
%% with Reason. The return value is ignored.
-spec terminate(Reason :: term(), StateName :: mqtt_state(), State :: #state{}) -> term().
terminate(Reason, _StateName, #state{endpoint = #endpoint{title = Title}, buffer = Buffer, conn_pid = ConnPid}) -> terminate(Reason, _StateName, #state{endpoint = #endpoint{title = Title}, buffer = Buffer, conn_pid = ConnPid}) ->
logger:debug("[endpoint_mqtt] endpoint: ~p, terminate with reason: ~p", [Title, Reason]), logger:debug("[endpoint_mqtt] endpoint: ~p, terminate with reason: ~p", [Title, Reason]),
stop_mqtt_conn(ConnPid), stop_mqtt_conn(ConnPid),
endpoint_buffer:cleanup(Buffer), endpoint_buffer:cleanup(Buffer),
ok. ok.
%% @private -spec code_change(term() | {down, term()}, mqtt_state(), #state{}, term()) ->
%% @doc Convert process state when code is changed {ok, mqtt_state(), #state{}} | {error, term()}.
-spec code_change(OldVsn :: term() | {down, term()},
StateName :: mqtt_state(),
State :: #state{},
Extra :: term()) ->
{ok, StateName :: mqtt_state(), NewState :: #state{}} | {error, term()}.
code_change(_OldVsn, StateName, State = #state{}, _Extra) -> code_change(_OldVsn, StateName, State = #state{}, _Extra) ->
{ok, StateName, State}. {ok, StateName, State}.
@ -214,6 +198,44 @@ code_change(_OldVsn, StateName, State = #state{}, _Extra) ->
%%% Internal functions %%% Internal functions
%%%=================================================================== %%%===================================================================
-spec reply_stat(gen_statem:from(), endpoint_buffer:buffer(), #state{}) ->
gen_statem:event_handler_result(mqtt_state(), #state{}).
reply_stat(From, Buffer, State) ->
Stat = endpoint_buffer:stat(Buffer),
{keep_state, State, [{reply, From, {ok, Stat}}]}.
-spec forward_metric(binary(), endpoint_buffer:buffer(), #state{}) ->
gen_statem:event_handler_result(mqtt_state(), #state{}).
forward_metric(Metric, Buffer, State) ->
NBuffer = endpoint_buffer:append(Metric, Buffer),
{keep_state, State#state{buffer = NBuffer}}.
-spec cleanup_buffer(endpoint_buffer:buffer(), #state{}) ->
gen_statem:event_handler_result(mqtt_state(), #state{}).
cleanup_buffer(Buffer, _State) ->
endpoint_buffer:cleanup(Buffer),
keep_state_and_data.
-spec reload_endpoint(binary(), binary(), undefined | pid(), #endpoint{}, #state{}) ->
gen_statem:event_handler_result(mqtt_state(), #state{}).
reload_endpoint(Matcher, NMatcher, ConnPid, NEndpoint, State = #state{}) ->
ensure_subscription(Matcher, NMatcher),
stop_mqtt_conn(ConnPid),
{next_state, disconnected, State#state{endpoint = NEndpoint, conn_pid = undefined, inflight = #{}},
[{next_event, internal, do_connect}]}.
-spec unknown_info(term(), mqtt_state(), #state{}) ->
gen_statem:event_handler_result(mqtt_state(), #state{}).
unknown_info(Info, StateName, State) ->
logger:warning("[endpoint_mqtt] unknown message: ~p, status: ~p", [Info, StateName]),
{keep_state, State}.
-spec unknown_event(gen_statem:event_type(), term(), mqtt_state(), #state{}) ->
gen_statem:event_handler_result(mqtt_state(), #state{}).
unknown_event(EventType, EventContent, StateName, State) ->
logger:warning("[endpoint_mqtt] unknown event: ~p, content: ~p, status: ~p", [EventType, EventContent, StateName]),
{keep_state, State}.
-spec ensure_subscription(binary(), binary()) -> ok. -spec ensure_subscription(binary(), binary()) -> ok.
ensure_subscription(Matcher, Matcher) -> ensure_subscription(Matcher, Matcher) ->
ok; ok;
@ -221,14 +243,6 @@ ensure_subscription(Matcher, NMatcher) ->
ok = endpoint_subscription:unsubscribe(Matcher, self()), ok = endpoint_subscription:unsubscribe(Matcher, self()),
endpoint_subscription:subscribe(NMatcher, self()). endpoint_subscription:subscribe(NMatcher, self()).
-spec maybe_connect_actions(mqtt_state()) -> [gen_statem:action()].
maybe_connect_actions(connected) ->
[{next_event, internal, do_connect}];
maybe_connect_actions(connecting) ->
[{next_event, internal, do_connect}];
maybe_connect_actions(disconnected) ->
[{next_event, internal, do_connect}].
-spec connect_mqtt(list()) -> {ok, pid()} | {error, term()}. -spec connect_mqtt(list()) -> {ok, pid()} | {error, term()}.
connect_mqtt(Opts) -> connect_mqtt(Opts) ->
try try