add host mocker
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安礼成
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@ -109,7 +109,7 @@ init([Host = #host{host_id = HostId}]) ->
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{stop, Reason :: term(), Reply :: term(), NewState :: #state{}} |
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{stop, Reason :: term(), NewState :: #state{}}).
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handle_call({publish, Message}, _From, State = #state{emqx_pid = ConnPid, host = #host{host_id = HostId}}) ->
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Topic = <<"/host/", HostId/binary, "/upstream">>,
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Topic = <<"/host/", HostId/binary, "/downstream">>,
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Result = emqtt:publish(ConnPid, Topic, #{}, Message, [{qos, ?QOS}]),
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{reply, Result, State}.
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173
apps/iot/src/iot_host_mocker.erl
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173
apps/iot/src/iot_host_mocker.erl
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@ -0,0 +1,173 @@
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%%%-------------------------------------------------------------------
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%%% @author aresei
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%%% @copyright (C) 2023, <COMPANY>
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%%% @doc
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%%%
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%%% @end
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%%% Created : 12. 3月 2023 21:27
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%%%-------------------------------------------------------------------
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-module(iot_host_mocker).
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-author("aresei").
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-include("iot.hrl").
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-behaviour(gen_server).
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%% API
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-export([start_link/1, publish/2]).
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%% gen_server callbacks
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-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).
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-define(SERVER, ?MODULE).
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%% 消息的qos等级
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-define(QOS, 1).
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-record(state, {
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host_id :: binary(),
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emqx_pid :: pid()
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}).
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%%%===================================================================
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%%% API
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%%%===================================================================
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-spec publish(pid(), binary()) -> {ok, PacketId :: integer()} | {error, term()}.
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publish(Pid, Message) when is_pid(Pid), is_binary(Message) ->
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gen_server:call(Pid, {publish, Message}).
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%% @doc Spawns the server and registers the local name (unique)
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-spec(start_link(HostId :: binary()) ->
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{ok, Pid :: pid()} | ignore | {error, Reason :: term()}).
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start_link(HostId) when is_binary(HostId) ->
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gen_server:start_link(?MODULE, [HostId], []).
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%%%===================================================================
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%%% gen_server callbacks
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%%%===================================================================
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%% @private
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%% @doc Initializes the server
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-spec(init(Args :: term()) ->
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{ok, State :: #state{}} | {ok, State :: #state{}, timeout() | hibernate} |
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{stop, Reason :: term()} | ignore).
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init([HostId]) ->
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%% 建立到emqx服务器的连接
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{ok, Props} = application:get_env(iot, emqx_server),
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EMQXHost = proplists:get_value(host, Props),
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EMQXPort = proplists:get_value(port, Props, 18080),
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Username = proplists:get_value(username, Props),
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Password = proplists:get_value(password, Props),
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RetryInterval = proplists:get_value(retry_interval, Props, 5),
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Keepalive = proplists:get_value(keepalive, Props, 86400),
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Opts = [
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{host, EMQXHost},
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{port, EMQXPort},
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{owner, self()},
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{tcp_opts, []},
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{username, Username},
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{password, Password},
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{keepalive, Keepalive},
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{retry_interval, RetryInterval}
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],
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case emqtt:start_link(Opts) of
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{ok, ConnPid} ->
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lager:debug("[iot_host] connect success, pid: ~p", [ConnPid]),
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%% 快速启动避免阻塞iot_host_sup的启动
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erlang:start_timer(0, self(), subscribe_ticker),
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{ok, #state{host_id = HostId, emqx_pid = ConnPid}};
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ignore ->
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lager:debug("[iot_host] connect emqx get ignore"),
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{stop, ignore};
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{error, Reason} ->
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lager:debug("[iot_host] connect emqx get error: ~p", [Reason]),
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{stop, Reason}
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end.
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%% @private
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%% @doc Handling call messages
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-spec(handle_call(Request :: term(), From :: {pid(), Tag :: term()},
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State :: #state{}) ->
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{reply, Reply :: term(), NewState :: #state{}} |
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{reply, Reply :: term(), NewState :: #state{}, timeout() | hibernate} |
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{noreply, NewState :: #state{}} |
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{noreply, NewState :: #state{}, timeout() | hibernate} |
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{stop, Reason :: term(), Reply :: term(), NewState :: #state{}} |
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{stop, Reason :: term(), NewState :: #state{}}).
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handle_call({publish, Message}, _From, State = #state{emqx_pid = ConnPid, host_id = HostId}) ->
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Topic = <<"/host/", HostId/binary, "/upstream">>,
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Result = emqtt:publish(ConnPid, Topic, #{}, Message, [{qos, ?QOS}]),
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{reply, Result, State}.
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%% @private
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%% @doc Handling cast messages
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-spec(handle_cast(Request :: term(), State :: #state{}) ->
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{noreply, NewState :: #state{}} |
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{noreply, NewState :: #state{}, timeout() | hibernate} |
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{stop, Reason :: term(), NewState :: #state{}}).
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handle_cast(_Request, State = #state{}) ->
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{noreply, State}.
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%% @private
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%% @doc Handling all non call/cast messages
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-spec(handle_info(Info :: timeout() | term(), State :: #state{}) ->
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{noreply, NewState :: #state{}} |
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{noreply, NewState :: #state{}, timeout() | hibernate} |
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{stop, Reason :: term(), NewState :: #state{}}).
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%% 处理topic的订阅事件
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handle_info({timeout, _, subscribe_ticker}, State = #state{emqx_pid = ConnPid, host_id = HostId}) ->
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%% 监听和host相关的全部事件
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{ok, _} = emqtt:connect(ConnPid),
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Topics = [
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{<<"/host/", HostId/binary, "/downstream">>, ?QOS}
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],
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SubscribeResult = emqtt:subscribe(ConnPid, Topics),
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lager:debug("[iot_host] host_id: ~p, subscribe result is: ~p", [HostId, SubscribeResult]),
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{noreply, State#state{emqx_pid = ConnPid}};
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handle_info({disconnect, ReasonCode, Properties}, State = #state{host_id = HostId}) ->
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lager:debug("[iot_host] host: ~p, Recv a DISONNECT packet - ReasonCode: ~p, Properties: ~p", [HostId, ReasonCode, Properties]),
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{stop, disconnected, State};
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handle_info({publish, Message = #{packet_id := PacketId, payload := Payload}}, State = #state{emqx_pid = ConnPid, host_id = HostId}) ->
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lager:debug("[iot_host] host: ~p, Recv a publish packet: ~p, payload: ~p", [HostId, Message, Payload]),
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% emqtt:pubrec(ConnPid, PacketId),
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{noreply, State};
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handle_info({puback, #{packet_id := PacketId, reason_code := ReasonCode}}, State = #state{host_id = HostId}) ->
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lager:debug("[iot_host] host: ~p, receive puback packet_id: ~p, reason_code: ~p", [HostId, PacketId, ReasonCode]),
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{noreply, State};
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handle_info(Info, State = #state{host_id = HostId}) ->
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lager:debug("host_id: ~p, get info: ~p", [HostId, Info]),
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{noreply, State}.
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%% @private
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%% @doc This function is called by a gen_server when it is about to
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%% terminate. It should be the opposite of Module:init/1 and do any
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%% necessary cleaning up. When it returns, the gen_server terminates
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%% with Reason. The return value is ignored.
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-spec(terminate(Reason :: (normal | shutdown | {shutdown, term()} | term()),
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State :: #state{}) -> term()).
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terminate(_Reason, _State = #state{emqx_pid = ConnPid}) when is_pid(ConnPid) ->
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{ok, _Props, _ReasonCode} = emqtt:unsubscribe(ConnPid, #{}, <<"hello">>),
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ok = emqtt:disconnect(ConnPid),
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ok = emqtt:stop(ConnPid),
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ok;
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terminate(Reason, _State) ->
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lager:debug("[iot_host] terminate with reason: ~p", [Reason]),
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ok.
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%% @private
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%% @doc Convert process state when code is changed
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-spec(code_change(OldVsn :: term() | {down, term()}, State :: #state{},
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Extra :: term()) ->
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{ok, NewState :: #state{}} | {error, Reason :: term()}).
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code_change(_OldVsn, State = #state{}, _Extra) ->
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{ok, State}.
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%%%===================================================================
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%%% Internal functions
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%%%===================================================================
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