change efka_agent to gen_statem
This commit is contained in:
parent
18967afb7a
commit
8786df0525
@ -4,6 +4,8 @@ efka
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An OTP application
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An OTP application
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1. 先解决数据的上行问题
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1. 先解决数据的上行问题
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2. todo list
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要解决连接断开重新连接的问题 !!!
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Build
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Build
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-----
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-----
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399
apps/efka/src/efka_agent2.erl
Normal file
399
apps/efka/src/efka_agent2.erl
Normal file
@ -0,0 +1,399 @@
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%%%-------------------------------------------------------------------
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%%% @author anlicheng
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%%% @copyright (C) 2025, <COMPANY>
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%%% @doc
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%%%
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%%% @end
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%%% Created : 21. 5月 2025 18:38
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%%%-------------------------------------------------------------------
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-module(efka_agent2).
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-author("anlicheng").
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-include("message_pb.hrl").
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-include("efka.hrl").
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-include("efka_tables.hrl").
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-behaviour(gen_statem).
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%% API
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-export([start_link/0]).
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-export([metric_data/3, event/3, ping/13, request_service_config/2, await_reply/2]).
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%% gen_statem callbacks
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-export([init/1, handle_event/4, terminate/3, code_change/4, callback_mode/0]).
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-define(SERVER, ?MODULE).
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%% 标记当前agent的状态，只有在 activated 状态下才可以正常的发送数据
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-define(STATE_DENIED, denied).
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-define(STATE_CONNECTING, connecting).
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-define(STATE_AUTH, auth).
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%% 不能推送消息到服务，但是可以接受服务器的部分指令
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-define(STATE_RESTRICTED, restricted).
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%% 激活状态下
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-define(STATE_ACTIVATED, activated).
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-record(state, {
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transport_pid :: undefined | pid(),
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%% 映射关系 #{Ref => PacketId}
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inflight = #{}
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}).
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%%%===================================================================
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%%% API
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%%%===================================================================
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%% 发送数据
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-spec metric_data(ServiceId :: binary(), DeviceUUID::binary(), LineProtocolData :: binary()) -> no_return().
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metric_data(ServiceId, DeviceUUID, LineProtocolData) when is_binary(ServiceId), is_binary(DeviceUUID), is_binary(LineProtocolData) ->
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gen_statem:cast(?SERVER, {metric_data, ServiceId, DeviceUUID, LineProtocolData}).
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-spec event(ServiceId :: binary(), EventType :: integer(), Params :: binary()) -> no_return().
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event(ServiceId, EventType, Params) when is_binary(ServiceId), is_integer(EventType), is_binary(Params) ->
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gen_statem:cast(?SERVER, {event, ServiceId, EventType, Params}).
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ping(AdCode, BootTime, Province, City, EfkaVersion, KernelArch, Ips, CpuCore, CpuLoad, CpuTemperature, Disk, Memory, Interfaces) ->
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gen_statem:cast(?SERVER, {ping, AdCode, BootTime, Province, City, EfkaVersion, KernelArch, Ips, CpuCore, CpuLoad, CpuTemperature, Disk, Memory, Interfaces}).
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%% 请求微服务的配置
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-spec request_service_config(ReceiverPid :: pid(), ServiceId :: binary()) -> {ok, Ref :: reference()} | {error, Reason :: term()}.
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request_service_config(ReceiverPid, ServiceId) when is_binary(ServiceId) ->
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gen_statem:call(?SERVER, {request_service_config, ReceiverPid, ServiceId}).
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%% 等待消息的回复
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-spec await_reply(Ref :: reference(), Timeout :: timeout()) -> {ok, Reply :: binary()} | {error, timeout}.
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await_reply(Ref, Timeout) when is_reference(Ref), is_integer(Timeout) ->
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receive
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{transport_reply, Ref, ReplyBin} ->
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{ok, ReplyBin}
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after Timeout ->
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{error, timeout}
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end.
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%% @doc Creates a gen_statem process which calls Module:init/1 to
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%% initialize. To ensure a synchronized start-up procedure, this
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%% function does not return until Module:init/1 has returned.
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start_link() ->
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gen_statem:start_link({local, ?SERVER}, ?MODULE, [], []).
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%%%===================================================================
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%%% gen_statem callbacks
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%%%===================================================================
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%% @private
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%% @doc Whenever a gen_statem is started using gen_statem:start/[3,4] or
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%% gen_statem:start_link/[3,4], this function is called by the new
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%% process to initialize.
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init([]) ->
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erlang:process_flag(trap_exit, true),
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erlang:start_timer(0, self(), create_transport),
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{ok, ?STATE_DENIED, #state{}}.
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%% @private
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%% @doc This function is called by a gen_statem when it needs to find out
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%% the callback mode of the callback module.
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callback_mode() ->
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handle_event_function.
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%% @private
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%% @doc If callback_mode is handle_event_function, then whenever a
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%% gen_statem receives an event from call/2, cast/2, or as a normal
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%% process message, this function is called.
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handle_event(cast, {metric_data, ServiceId, DeviceUUID, LineProtocolData}, ?STATE_ACTIVATED, State = #state{transport_pid = TransportPid}) ->
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Packet = message_pb:encode_msg(#data{
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service_id = ServiceId,
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device_uuid = DeviceUUID,
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metric = LineProtocolData
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}),
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efka_transport:send(TransportPid, ?METHOD_DATA, Packet),
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{keep_state, State};
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handle_event(cast, {metric_data, ServiceId, DeviceUUID, LineProtocolData}, _, State) ->
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Packet = message_pb:encode_msg(#data{
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service_id = ServiceId,
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device_uuid = DeviceUUID,
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metric = LineProtocolData
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}),
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ok = cache_model:insert(?METHOD_DATA, Packet),
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{keep_state, State};
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handle_event(cast, {event, ServiceId, EventType, Params}, ?STATE_ACTIVATED, State = #state{transport_pid = TransportPid}) ->
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EventPacket = message_pb:encode_msg(#event{
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service_id = ServiceId,
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event_type = EventType,
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params = Params
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}),
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efka_transport:send(TransportPid, ?METHOD_EVENT, EventPacket),
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{keep_state, State};
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handle_event(cast, {event, ServiceId, EventType, Params}, ?STATE_ACTIVATED, State) ->
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EventPacket = message_pb:encode_msg(#event{
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service_id = ServiceId,
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event_type = EventType,
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params = Params
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}),
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ok = cache_model:insert(?METHOD_EVENT, EventPacket),
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{keep_state, State};
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handle_event(cast, {ping, AdCode, BootTime, Province, City, EfkaVersion, KernelArch, Ips, CpuCore, CpuLoad, CpuTemperature, Disk, Memory, Interfaces}, ?STATE_ACTIVATED,
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State = #state{transport_pid = TransportPid}) ->
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Ping = message_pb:encode_msg(#ping{
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adcode = AdCode,
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boot_time = BootTime,
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province = Province,
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city = City,
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efka_version = EfkaVersion,
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kernel_arch = KernelArch,
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ips = Ips,
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cpu_core = CpuCore,
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cpu_load = CpuLoad,
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cpu_temperature = CpuTemperature,
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disk = Disk,
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memory = Memory,
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interfaces = Interfaces
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}),
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efka_transport:send(TransportPid, ?METHOD_PING, Ping),
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{keep_state, State};
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handle_event(info, {timeout, _, create_transport}, ?STATE_ACTIVATED, State) ->
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{ok, Props} = application:get_env(efka, tls_server),
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Host = proplists:get_value(host, Props),
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Port = proplists:get_value(port, Props),
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{ok, TransportPid} = efka_transport:start_link(self(), Host, Port),
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efka_transport:connect(TransportPid),
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{next_state, ?STATE_CONNECTING, State#state{transport_pid = TransportPid}};
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handle_event(info, {connect_reply, Reply}, ?STATE_CONNECTING, State = #state{transport_pid = TransportPid}) ->
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case Reply of
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ok ->
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AuthBin = auth_request(),
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efka_transport:auth_request(TransportPid, AuthBin),
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{next_state, ?STATE_AUTH, State};
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{error, Reason} ->
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lager:debug("[efka_agent] connect failed, error: ~p, pid: ~p", [Reason, TransportPid]),
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efka_transport:stop(TransportPid),
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{next_state, ?STATE_DENIED, State}
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end;
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handle_event(info, {auth_reply, Reply}, ?STATE_AUTH, State = #state{transport_pid = TransportPid}) ->
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case Reply of
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{ok, ReplyBin} ->
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#auth_reply{code = Code, message = Message} = message_pb:decode_msg(ReplyBin, auth_reply),
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case Code of
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0 ->
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lager:debug("[efka_agent] auth success, message: ~p", [Message]),
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%% 上传缓冲区里面的所有数据
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CacheItems = cache_model:get_all_cache(),
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lists:foreach(fun(#cache{id = Id, method = Method, data = Packet}) ->
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efka_transport:send(TransportPid, Method, Packet),
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cache_model:delete(Id)
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end, CacheItems),
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{next_state, ?STATE_ACTIVATED, State};
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1 ->
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%% 主机在后台的授权未通过；此时agent不能推送数据给云端服务器，但是云端服务器可以推送命令给agent
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%% socket的连接状态需要维持
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lager:debug("[efka_agent] auth denied, message: ~p", [Message]),
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{next_state, ?STATE_RESTRICTED, State};
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2 ->
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% 其他类型的错误，需要间隔时间重试
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lager:debug("[efka_agent] auth failed, message: ~p", [Message]),
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efka_transport:stop(TransportPid),
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{next_state, ?STATE_DENIED, State#state{transport_pid = undefined}};
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_ ->
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% 其他类型的错误，需要间隔时间重试
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lager:debug("[efka_agent] auth failed, invalid message"),
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efka_transport:stop(TransportPid),
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{next_state, ?STATE_DENIED, State#state{transport_pid = undefined}}
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end;
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{error, Reason} ->
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lager:debug("[efka_agent] auth_request failed, error: ~p", [Reason]),
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efka_transport:stop(TransportPid),
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{next_state, ?STATE_DENIED, State#state{transport_pid = undefined}}
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end;
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%% 云端服务器推送了消息
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%% 激活消息
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%% 微服务部署
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handle_event(info, {server_push, PacketId, <<?PUSH_DEPLOY:8, DeployBin/binary>>}, ?STATE_ACTIVATED, State = #state{transport_pid = TransportPid}) ->
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#deploy{task_id = TaskId, service_id = ServiceId, tar_url = TarUrl} = message_pb:decode_msg(DeployBin, deploy),
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%% 短暂的等待，efka_inetd收到消息后就立即返回了
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Reply = case efka_inetd:deploy(TaskId, ServiceId, TarUrl) of
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ok ->
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#async_call_reply{code = 1, result = <<"ok">>};
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{error, Reason} when is_binary(Reason) ->
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#async_call_reply{code = 0, message = Reason}
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end,
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efka_transport:async_call_reply(TransportPid, PacketId, message_pb:encode_msg(Reply)),
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{keep_state, State};
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%% 启动微服务
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handle_event(info, {server_push, PacketId, <<?PUSH_START_SERVICE:8, ServiceId/binary>>}, ?STATE_ACTIVATED, State = #state{transport_pid = TransportPid}) ->
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%% 短暂的等待，efka_inetd收到消息后就立即返回了
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Reply = case efka_inetd:start_service(ServiceId) of
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ok ->
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#async_call_reply{code = 1, result = <<"ok">>};
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{error, Reason} when is_binary(Reason) ->
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#async_call_reply{code = 0, message = Reason}
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end,
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efka_transport:async_call_reply(TransportPid, PacketId, message_pb:encode_msg(Reply)),
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{keep_state, State};
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%% 停止微服务
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handle_event(info, {server_push, PacketId, <<?PUSH_STOP_SERVICE:8, ServiceId/binary>>}, ?STATE_ACTIVATED, State = #state{transport_pid = TransportPid}) ->
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%% 短暂的等待，efka_inetd收到消息后就立即返回了
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Reply = case efka_inetd:stop_service(ServiceId) of
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ok ->
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#async_call_reply{code = 1, result = <<"ok">>};
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{error, Reason} when is_binary(Reason) ->
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#async_call_reply{code = 0, message = Reason}
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end,
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efka_transport:async_call_reply(TransportPid, PacketId, message_pb:encode_msg(Reply)),
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{keep_state, State};
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%% config.json配置信息
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handle_event(info, {server_push, PacketId, <<?PUSH_SERVICE_CONFIG:8, ConfigBin/binary>>}, ?STATE_ACTIVATED, State = #state{transport_pid = TransportPid, inflight = Inflight}) ->
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#push_service_config{service_id = ServiceId, config_json = ConfigJson, timeout = Timeout} = message_pb:decode_msg(ConfigBin, push_service_config),
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case efka_service:get_pid(ServiceId) of
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undefined ->
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Reply = #async_call_reply{code = 0, message = <<"service not run">>},
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efka_transport:async_call_reply(TransportPid, PacketId, message_pb:encode_msg(Reply)),
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{keep_state, State};
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ServicePid when is_pid(ServicePid) ->
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Ref = make_ref(),
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%% 将配置文件推送到对应的微服务
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efka_service:push_config(ServicePid, Ref, ConfigJson),
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%% 处理超时逻辑
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erlang:start_timer(Timeout, self(), {request_timeout, Ref}),
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{keep_state, State#state{inflight = maps:put(Ref, PacketId, Inflight)}}
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end;
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%% 收到需要回复的指令
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handle_event(info, {server_push, PacketId, <<?PUSH_INVOKE:8, InvokeBin/binary>>}, ?STATE_ACTIVATED, State = #state{inflight = Inflight, transport_pid = TransportPid}) ->
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#invoke{service_id = ServiceId, payload = Payload, timeout = Timeout} = message_pb:decode_msg(InvokeBin, invoke),
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%% 消息发送到订阅系统
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case efka_service:get_pid(ServiceId) of
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undefined ->
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Reply = #async_call_reply{code = 0, message = <<"micro_service not run">>},
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efka_transport:async_call_reply(TransportPid, PacketId, message_pb:encode_msg(Reply)),
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{keep_state, State};
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ServicePid when is_pid(ServicePid) ->
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Ref = make_ref(),
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efka_service:invoke(ServicePid, Ref, Payload),
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%% 处理超时逻辑
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erlang:start_timer(Timeout, self(), {request_timeout, Ref}),
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{keep_state, State#state{inflight = maps:put(Ref, PacketId, Inflight)}}
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end;
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%% 处理task_log
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handle_event(info, {server_push, PacketId, <<?PUSH_TASK_LOG:8, TaskLogBin/binary>>}, ?STATE_ACTIVATED, State = #state{transport_pid = TransportPid}) ->
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#fetch_task_log{task_id = TaskId} = message_pb:decode_msg(TaskLogBin, fetch_task_log),
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lager:debug("[efka_agent] get task_log request: ~p", [TaskId]),
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{ok, Logs} = efka_inetd_task_log:get_logs(TaskId),
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Reply = case length(Logs) > 0 of
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true ->
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Result = iolist_to_binary(jiffy:encode(Logs, [force_utf8])),
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#async_call_reply{code = 1, result = Result};
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false ->
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#async_call_reply{code = 1, result = <<"[]">>}
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end,
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efka_transport:async_call_reply(TransportPid, PacketId, message_pb:encode_msg(Reply)),
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|
{keep_state, State};
|
||||||
|
|
||||||
|
%% 处理命令
|
||||||
|
handle_event(info, {server_command, ?COMMAND_AUTH, <<Auth:8>>}, StateName, State = #state{transport_pid = TransportPid}) ->
|
||||||
|
case {Auth, StateName} of
|
||||||
|
{1, ?STATE_ACTIVATED} ->
|
||||||
|
{keep_state, State};
|
||||||
|
{1, ?STATE_DENIED} ->
|
||||||
|
%% 重新激活, 需要重新校验
|
||||||
|
AuthRequestBin = auth_request(),
|
||||||
|
efka_transport:auth_request(TransportPid, AuthRequestBin),
|
||||||
|
{next_state, ?STATE_AUTH, State};
|
||||||
|
{0, _} ->
|
||||||
|
%% 这个时候的主机应该是受限制的状态，不允许发送消息；但是能够接受服务器推送的消息
|
||||||
|
{next_state, ?STATE_RESTRICTED, State}
|
||||||
|
end;
|
||||||
|
|
||||||
|
%% 收到需要回复的指令
|
||||||
|
handle_event(info, {server_pub, Topic, Content}, ?STATE_ACTIVATED, State) ->
|
||||||
|
lager:debug("[efka_agent] get pub topic: ~p, content: ~p", [Topic, Content]),
|
||||||
|
%% 消息发送到订阅系统
|
||||||
|
efka_subscription:publish(Topic, Content),
|
||||||
|
{keep_state, State};
|
||||||
|
|
||||||
|
%% 收到来自efka_service的回复
|
||||||
|
handle_event(info, {service_reply, Ref, EmsReply}, ?STATE_ACTIVATED, State = #state{inflight = Inflight, transport_pid = TransportPid}) ->
|
||||||
|
case maps:take(Ref, Inflight) of
|
||||||
|
error ->
|
||||||
|
{keep_state, State};
|
||||||
|
{PacketId, NInflight} ->
|
||||||
|
Reply = case EmsReply of
|
||||||
|
{ok, Result} ->
|
||||||
|
#async_call_reply{code = 1, result = Result};
|
||||||
|
{error, Reason} ->
|
||||||
|
#async_call_reply{code = 0, message = Reason}
|
||||||
|
end,
|
||||||
|
efka_transport:async_call_reply(TransportPid, PacketId, message_pb:encode_msg(Reply)),
|
||||||
|
|
||||||
|
{keep_state, State#state{inflight = NInflight}}
|
||||||
|
end;
|
||||||
|
|
||||||
|
%% todo 请求超时逻辑处理
|
||||||
|
handle_event(info, {timeout, _, {request_timeout, Ref}}, ?STATE_ACTIVATED, State = #state{inflight = Inflight, transport_pid = TransportPid}) ->
|
||||||
|
case maps:take(Ref, Inflight) of
|
||||||
|
error ->
|
||||||
|
{keep_state, State};
|
||||||
|
{PacketId, NInflight} ->
|
||||||
|
Reply = #async_call_reply{code = 0, message = <<"reqeust timeout">>, result = <<>>},
|
||||||
|
efka_transport:async_call_reply(TransportPid, PacketId, message_pb:encode_msg(Reply)),
|
||||||
|
|
||||||
|
{keep_state, State#state{inflight = NInflight}}
|
||||||
|
end;
|
||||||
|
|
||||||
|
%% transport进程退出
|
||||||
|
handle_event(info, {'EXIT', TransportPid, Reason}, _, State = #state{transport_pid = TransportPid}) ->
|
||||||
|
lager:debug("[efka_agent] transport pid: ~p, exit with reason: ~p", [TransportPid, Reason]),
|
||||||
|
erlang:start_timer(5000, self(), create_transport),
|
||||||
|
{next_state, ?STATE_DENIED, State#state{transport_pid = undefined}}.
|
||||||
|
|
||||||
|
%% @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.
|
||||||
|
terminate(_Reason, _StateName, _State = #state{}) ->
|
||||||
|
ok.
|
||||||
|
|
||||||
|
%% @private
|
||||||
|
%% @doc Convert process state when code is changed
|
||||||
|
code_change(_OldVsn, StateName, State = #state{}, _Extra) ->
|
||||||
|
{ok, StateName, State}.
|
||||||
|
|
||||||
|
%%%===================================================================
|
||||||
|
%%% Internal functions
|
||||||
|
%%%===================================================================
|
||||||
|
|
||||||
|
-spec auth_request() -> binary().
|
||||||
|
auth_request() ->
|
||||||
|
{ok, AuthInfo} = application:get_env(efka, auth),
|
||||||
|
UUID = proplists:get_value(uuid, AuthInfo),
|
||||||
|
Username = proplists:get_value(username, AuthInfo),
|
||||||
|
Salt = proplists:get_value(salt, AuthInfo),
|
||||||
|
Token = proplists:get_value(token, AuthInfo),
|
||||||
|
|
||||||
|
message_pb:encode_msg(#auth_request{
|
||||||
|
uuid = unicode:characters_to_binary(UUID),
|
||||||
|
username = unicode:characters_to_binary(Username),
|
||||||
|
salt = unicode:characters_to_binary(Salt),
|
||||||
|
token = unicode:characters_to_binary(Token),
|
||||||
|
timestamp = efka_util:timestamp()
|
||||||
|
}).
|
||||||
Loading…
x
Reference in New Issue
Block a user