130 lines
4.6 KiB
Erlang
130 lines
4.6 KiB
Erlang
%%%-------------------------------------------------------------------
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%%% @author anlicheng
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%%% @copyright (C) 2025, <COMPANY>
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%%% @doc
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%%% 微服务守护进程
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%%% 1. 负责微服务的下载, 版本的管理
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%%% 2. 目录管理等
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%%% @end
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%%% Created : 19. 4月 2025 14:55
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%%%-------------------------------------------------------------------
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-module(efka_inetd).
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-author("anlicheng").
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-include("efka_tables.hrl").
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-include("message_pb.hrl").
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-behaviour(gen_server).
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%% API
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-export([start_link/0]).
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-export([deploy/3]).
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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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-record(state, {
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root_dir :: string(),
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%% 建立任务到ref之间的映射, #{MRef => taskId}
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task_map = #{}
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}).
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%%%===================================================================
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%%% API
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%%%===================================================================
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-spec deploy(TaskId :: integer(), ServerId :: binary(), TarUrl :: binary()) -> ok | {error, Reason :: binary()}.
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deploy(TaskId, ServerId, TarUrl) when is_integer(TaskId), is_binary(ServerId), is_binary(TarUrl) ->
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gen_server:call(?SERVER, {deploy, TaskId, ServerId, TarUrl}).
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%% @doc Spawns the server and registers the local name (unique)
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-spec(start_link() ->
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{ok, Pid :: pid()} | ignore | {error, Reason :: term()}).
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start_link() ->
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gen_server:start_link({local, ?SERVER}, ?MODULE, [], []).
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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([]) ->
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erlang:process_flag(trap_exit, true),
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{ok, RootDir} = application:get_env(efka, root_dir),
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{ok, #state{root_dir = RootDir}}.
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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({deploy, TaskId, ServiceId, TarUrl}, _From, State = #state{root_dir = RootDir, task_map = TaskMap}) ->
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{ok, TaskPid} = efka_inetd_task:start_link(TaskId, RootDir, ServiceId, TarUrl),
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efka_inetd_task:deploy(TaskPid),
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{reply, ok, State};
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handle_call(_Request, _From, State = #state{}) ->
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{reply, ok, 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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%% 下载任务异常退出
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handle_info({'DOWN', Ref, process, _Pid, {error, Reason}}, State = #state{task_map = TaskMap}) ->
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{{TaskId, _Service}, NTaskMap} = maps:take(Ref, TaskMap),
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lager:debug("[efka_inetd] service: ~p, download get error: ~p", [Reason]),
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%% 下载完整
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efka_agent:feedback_phase(TaskId, efka_util:timestamp(), <<"download">>, 0),
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{noreply, State#state{task_map = NTaskMap}};
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handle_info(_Info, State = #state{}) ->
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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{}) ->
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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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