選択できるのは25トピックまでです。
トピックは、先頭が英数字で、英数字とダッシュ('-')を使用した35文字以内のものにしてください。
213 行
10 KiB
213 行
10 KiB
-module(agTcpAgencyIns).
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-include("agHttpCli.hrl").
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-compile(inline).
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-compile({inline_size, 512}).
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-export([
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%% 内部行为API
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init/1
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, handleMsg/3
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, terminate/3
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]).
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-record(srvState, {
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poolName :: poolName(),
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serverName :: serverName(),
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userPassWord :: binary(),
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host :: binary(),
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rn :: binary:cp(),
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rnrn :: binary:cp(),
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reconnectState :: undefined | reconnectState(),
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socket :: undefined | inet:socket(),
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timerRef :: undefined | reference()
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}).
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-type srvState() :: #srvState{}.
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-spec init(term()) -> no_return().
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init({PoolName, AgencyName, AgencyOpts}) ->
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BacklogSize = ?GET_FROM_LIST(backlogSize, AgencyOpts, ?DEFAULT_BACKLOG_SIZE),
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ReconnectState = agAgencyUtils:initReconnectState(AgencyOpts),
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self() ! ?miDoNetConnect,
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{ok, #srvState{poolName = PoolName, serverName = AgencyName, rn = binary:compile_pattern(<<"\r\n">>), rnrn = binary:compile_pattern(<<"\r\n\r\n">>), reconnectState = ReconnectState}, #cliState{backlogSize = BacklogSize}}.
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-spec handleMsg(term(), srvState(), cliState()) -> {ok, term(), term()}.
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handleMsg({miRequest, FromPid, _Method, _Path, _Headers, _Body, RequestId, _OverTime},
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#srvState{socket = undefined} = SrvState,
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CliState) ->
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agAgencyUtils:agencyReply(FromPid, RequestId, undefined, {error, no_socket}),
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{ok, SrvState, CliState};
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handleMsg({miRequest, FromPid, Method, Path, Headers, Body, RequestId, OverTime} = MiRequest,
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#srvState{serverName = ServerName, host = Host, userPassWord = UserPassWord, socket = Socket} = SrvState,
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#cliState{backlogNum = BacklogNum, backlogSize = BacklogSize, requestsIn = RequestsIn, status = Status} = CliState) ->
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case BacklogNum >= BacklogSize of
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true ->
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?WARN(ServerName, ":backlog full curNum:~p Total: ~p ~n", [BacklogNum, BacklogSize]),
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agAgencyUtils:agencyReply(FromPid, RequestId, undefined, {error, backlog_full}),
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{ok, SrvState, CliState};
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_ ->
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case Status of
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leisure -> %% 空闲模式
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Request = agHttpProtocol:request(Method, Host, Path, [{<<"Authorization">>, UserPassWord} | Headers], Body),
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case gen_tcp:send(Socket, Request) of
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ok ->
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TimerRef =
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case OverTime of
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infinity ->
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undefined;
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_ ->
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erlang:start_timer(OverTime, self(), waiting, [{abs, true}])
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end,
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{ok, SrvState, CliState#cliState{status = waiting, backlogNum = BacklogNum + 1, curInfo = {FromPid, RequestId, TimerRef}}};
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{error, Reason} ->
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?WARN(ServerName, ":send error: ~p~n", [Reason]),
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gen_tcp:close(Socket),
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agAgencyUtils:agencyReply(FromPid, RequestId, undefined, {error, socket_send_error}),
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dealClose(SrvState, CliState, {error, socket_send_error})
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end;
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_ ->
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agAgencyUtils:addQueue(RequestsIn, MiRequest),
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{ok, SrvState, CliState#cliState{requestsIn = RequestsIn + 1, backlogNum = BacklogNum + 1}}
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end
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end;
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handleMsg({tcp, Socket, Data},
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#srvState{serverName = ServerName, rn = Rn, rnrn = RnRn, socket = Socket} = SrvState,
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#cliState{backlogNum = BacklogNum, curInfo = CurInfo, requestsOut = RequestsOut, recvState = RecvState} = CliState) ->
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try agHttpProtocol:response(RecvState, Rn, RnRn, Data) of
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{done, #recvState{statusCode = StatusCode, contentLength = ContentLength, body = Body}} ->
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agAgencyUtils:agencyReply(CurInfo, #requestRet{statusCode = StatusCode, contentLength = ContentLength, body = Body}),
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case agAgencyUtils:getQueue(RequestsOut + 1) of
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undefined ->
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{ok, SrvState, CliState#cliState{backlogNum = BacklogNum - 1, status = leisure, curInfo = undefined, recvState = undefined}};
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MiRequest ->
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dealQueueRequest(MiRequest, SrvState, CliState#cliState{backlogNum = BacklogNum - 1, status = leisure, curInfo = undefined, recvState = undefined})
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end;
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{ok, NewRecvState} ->
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{ok, SrvState, CliState#cliState{recvState = NewRecvState}};
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{error, Reason} ->
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?WARN(ServerName, "handle tcp data error: ~p~n", [Reason]),
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gen_tcp:close(Socket),
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dealClose(SrvState, CliState, {error, tcp_data_error})
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catch
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E:R:S ->
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?WARN(ServerName, "handle tcp data crash: ~p:~p~n~p~n", [E, R, S]),
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gen_tcp:close(Socket),
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dealClose(SrvState, CliState, {{error, agency_handledata_error}})
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end;
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handleMsg({timeout, TimerRef, waiting},
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#srvState{socket = Socket} = SrvState,
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#cliState{backlogNum = BacklogNum, curInfo = {FromPid, RequestId, TimerRef}} = CliState) ->
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agAgencyUtils:agencyReply(FromPid, RequestId, undefined, {error, timeout}),
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%% 之前的数据超时之后 要关闭tcp 然后重新建立连接 以免后面该tcp收到该次超时数据 影响后面请求的接收数据 导致数据错乱
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gen_tcp:close(Socket),
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timer:sleep(1000),
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self() ! ?miDoNetConnect,
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{ok, SrvState, CliState#cliState{backlogNum = BacklogNum - 1}};
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handleMsg({tcp_closed, Socket},
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#srvState{socket = Socket, serverName = ServerName} = SrvState,
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CliState) ->
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?WARN(ServerName, "connection closed~n", []),
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dealClose(SrvState, CliState, {error, tcp_closed});
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handleMsg({tcp_error, Socket, Reason},
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#srvState{socket = Socket, serverName = ServerName} = SrvState,
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CliState) ->
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?WARN(ServerName, "connection error: ~p~n", [Reason]),
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gen_tcp:close(Socket),
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dealClose(SrvState, CliState, {error, tcp_error});
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handleMsg(?miDoNetConnect,
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#srvState{poolName = PoolName, serverName = ServerName, reconnectState = ReconnectState} = SrvState,
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#cliState{requestsOut = RequestsOut} = CliState) ->
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case ?agBeamPool:get(PoolName) of
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#poolOpts{hostname = HostName, port = Port, host = Host, userPassword = UserPassword} ->
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case dealConnect(ServerName, HostName, Port, ?DEFAULT_SOCKET_OPTS) of
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{ok, Socket} ->
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NewReconnectState = agAgencyUtils:resetReconnectState(ReconnectState),
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%% 新建连接之后 需要重置之前的buff之类状态数据
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NewCliState = CliState#cliState{status = leisure, recvState = undefined, curInfo = undefined},
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case agAgencyUtils:getQueue(RequestsOut + 1) of
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undefined ->
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{ok, SrvState#srvState{userPassWord = UserPassword, host = Host, reconnectState = NewReconnectState, socket = Socket}, NewCliState};
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MiRequest ->
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dealQueueRequest(MiRequest, SrvState#srvState{socket = Socket}, NewCliState)
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end;
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{error, _Reason} ->
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reconnectTimer(SrvState, CliState)
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end;
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_Ret ->
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?WARN(ServerName, "deal connect not found agBeamPool:get(~p) ret ~p is error ~n", [PoolName, _Ret])
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end;
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handleMsg(Msg, #srvState{serverName = ServerName} = SrvState, CliState) ->
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?WARN(ServerName, "unknown msg: ~p~n", [Msg]),
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{ok, SrvState, CliState}.
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-spec terminate(term(), srvState(), cliState()) -> ok.
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terminate(_Reason,
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#srvState{timerRef = TimerRef},
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_CliState) ->
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agAgencyUtils:cancelTimer(TimerRef),
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agAgencyUtils:agencyReplyAll({error, shutdown}),
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ok.
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dealConnect(ServerName, HostName, Port, SocketOptions) ->
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case inet:getaddrs(HostName, inet) of
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{ok, IPList} ->
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Ip = agMiscUtils:randomElement(IPList),
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case gen_tcp:connect(Ip, Port, SocketOptions, ?DEFAULT_CONNECT_TIMEOUT) of
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{ok, Socket} ->
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{ok, Socket};
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{error, Reason} ->
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?WARN(ServerName, "connect error: ~p~n", [Reason]),
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{error, Reason}
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end;
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{error, Reason} ->
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?WARN(ServerName, "getaddrs error: ~p~n", [Reason]),
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{error, Reason}
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end.
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dealClose(SrvState, ClientState, Reply) ->
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agAgencyUtils:agencyReplyAll(Reply),
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reconnectTimer(SrvState, ClientState).
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reconnectTimer(#srvState{reconnectState = undefined} = SrvState, CliState) ->
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{ok, {SrvState#srvState{socket = undefined}, CliState}};
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reconnectTimer(#srvState{reconnectState = ReconnectState} = SrvState, CliState) ->
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#reconnectState{current = Current} = MewReconnectState = agAgencyUtils:updateReconnectState(ReconnectState),
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TimerRef = erlang:send_after(Current, self(), ?miDoNetConnect),
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{ok, SrvState#srvState{reconnectState = MewReconnectState, socket = undefined, timerRef = TimerRef}, CliState}.
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dealQueueRequest({miRequest, FromPid, Method, Path, Headers, Body, RequestId, OverTime},
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#srvState{serverName = ServerName, host = Host, userPassWord = UserPassWord, socket = Socket} = SrvState,
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#cliState{requestsOut = RequestsOut} = CliState) ->
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agAgencyUtils:delQueue(RequestsOut + 1),
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case erlang:system_time(millisecond) > OverTime of
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true ->
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%% 超时了
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case agAgencyUtils:getQueue(RequestsOut + 2) of
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undefined ->
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{ok, SrvState, CliState#cliState{status = waiting, requestsOut = RequestsOut + 1}};
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MiRequest ->
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dealQueueRequest(MiRequest, SrvState, CliState#cliState{requestsOut = RequestsOut + 1})
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end;
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_ ->
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Request = agHttpProtocol:request(Method, Host, Path, [{<<"Authorization">>, UserPassWord} | Headers], Body),
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case gen_tcp:send(Socket, Request) of
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ok ->
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TimerRef =
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case OverTime of
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infinity ->
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undefined;
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_ ->
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erlang:start_timer(OverTime, self(), waiting, [{abs, true}])
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end,
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{ok, SrvState, CliState#cliState{status = waiting, requestsOut = RequestsOut + 1, curInfo = {FromPid, RequestId, TimerRef}}};
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{error, Reason} ->
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?WARN(ServerName, ":send error: ~p~n", [Reason]),
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gen_tcp:close(Socket),
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agAgencyUtils:agencyReply(FromPid, RequestId, undefined, {error, socket_send_error}),
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dealClose(SrvState, CliState, {error, socket_send_error})
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end
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end.
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