mirror of
https://gitee.com/rainbond/Rainbond.git
synced 2024-12-05 21:27:47 +08:00
201 lines
5.5 KiB
Go
201 lines
5.5 KiB
Go
// Copyright (C) 2014-2018 Goodrain Co., Ltd.
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// RAINBOND, Application Management Platform
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version. For any non-GPL usage of Rainbond,
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// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
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// must be obtained first.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package entry
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import (
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"errors"
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"net"
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"time"
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"github.com/goodrain/rainbond/eventlog/conf"
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"github.com/goodrain/rainbond/eventlog/store"
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"github.com/goodrain/rainbond/eventlog/util"
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"golang.org/x/net/context"
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"fmt"
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"sync"
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"github.com/sirupsen/logrus"
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zmq4 "github.com/pebbe/zmq4"
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)
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//DockerLogServer 日志接受服务
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type DockerLogServer struct {
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conf conf.DockerLogServerConf
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log *logrus.Entry
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cancel func()
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context context.Context
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server *zmq4.Socket
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storemanager store.Manager
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messageChan chan []byte
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listenErr chan error
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serverLock sync.Mutex
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stopReceiveMessage bool
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bufferServer *util.Server
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listen *net.TCPListener
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}
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//NewDockerLogServer 创建zmq server服务端
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func NewDockerLogServer(conf conf.DockerLogServerConf, log *logrus.Entry, storeManager store.Manager) (*DockerLogServer, error) {
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ctx, cancel := context.WithCancel(context.Background())
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s := &DockerLogServer{
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conf: conf,
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log: log,
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cancel: cancel,
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context: ctx,
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storemanager: storeManager,
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listenErr: make(chan error),
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}
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s.log.Info("receive docker container log server start.")
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if conf.Mode == "zmq" {
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server, err := zmq4.NewSocket(zmq4.SUB)
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server.SetSubscribe("")
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if err != nil {
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s.log.Error("create rep zmq socket error.", err.Error())
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return nil, err
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}
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address := fmt.Sprintf("tcp://%s:%d", s.conf.BindIP, s.conf.BindPort)
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server.Bind(address)
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s.log.Infof("Docker container log server listen %s", address)
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s.server = server
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} else {
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// creates a tcp listener
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tcpAddr, err := net.ResolveTCPAddr("tcp4", fmt.Sprintf("%s:%d", s.conf.BindIP, s.conf.BindPort))
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if err != nil {
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s.log.Error("create stream log server address error.", err.Error())
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return nil, err
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}
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listener, err := net.ListenTCP("tcp", tcpAddr)
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if err != nil {
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s.log.Error("create stream log server listener error.", err.Error())
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return nil, err
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}
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s.listen = listener
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// creates a server
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config := &util.Config{
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PacketSendChanLimit: 10,
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PacketReceiveChanLimit: 5000,
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}
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s.bufferServer = util.NewServer(config, s, s.context)
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s.log.Infof("Docker container log server listen %s", tcpAddr)
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}
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s.messageChan = s.storemanager.DockerLogMessageChan()
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if s.messageChan == nil {
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return nil, errors.New("receive log message server can not get store message chan ")
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}
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return s, nil
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}
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//Serve 执行
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func (s *DockerLogServer) Serve() {
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if s.conf.Mode == "zmq" {
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s.handleMessage()
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} else {
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s.bufferServer.Start(s.listen, 3*time.Second)
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}
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}
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// OnConnect is called when the connection was accepted,
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// If the return value of false is closed
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func (s *DockerLogServer) OnConnect(c *util.Conn) bool {
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s.log.Debugf("receive a log client connect.")
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return true
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}
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// OnMessage is called when the connection receives a packet,
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// If the return value of false is closed
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func (s *DockerLogServer) OnMessage(p util.Packet) bool {
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if len(p.Serialize()) > 0 {
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select {
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case s.messageChan <- p.Serialize():
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return true
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default:
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//TODO: return false and receive exist
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return true
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}
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} else {
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logrus.Error("receive a null message")
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}
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return true
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}
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// OnClose is called when the connection closed
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func (s *DockerLogServer) OnClose(*util.Conn) {
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s.log.Debugf("a log client closed.")
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}
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//Stop 停止
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func (s *DockerLogServer) Stop() {
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s.cancel()
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if s.bufferServer != nil {
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s.bufferServer.Stop()
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}
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s.log.Info("receive event message server stop")
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}
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func (s *DockerLogServer) handleMessage() {
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chQuit := make(chan interface{})
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chErr := make(chan error, 2)
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channel := make(chan []byte, s.conf.CacheMessageSize)
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newServerListen := func(sock *zmq4.Socket, channel chan []byte) {
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socketHandler := func(state zmq4.State) error {
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msg, err := sock.RecvBytes(0)
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if err != nil {
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s.log.Error("server receive message error.", err.Error())
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return err
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}
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channel <- msg
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return nil
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}
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quitHandler := func(interface{}) error {
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close(channel)
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s.log.Infof("Event message receive Server quit.")
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return nil
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}
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reactor := zmq4.NewReactor()
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reactor.AddSocket(sock, zmq4.POLLIN, socketHandler)
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reactor.AddChannel(chQuit, 1, quitHandler)
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err := reactor.Run(100 * time.Millisecond)
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chErr <- err
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}
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go newServerListen(s.server, channel)
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func() {
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for !s.stopReceiveMessage {
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select {
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case msg := <-channel:
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s.messageChan <- msg
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case <-s.context.Done():
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s.log.Debug("handle message core begin close.")
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close(chQuit)
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s.stopReceiveMessage = true
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// close(s.messageChan)
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}
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}
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}()
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s.log.Info("Handle message core stop.")
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}
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//ListenError listen error chan
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func (s *DockerLogServer) ListenError() chan error {
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return s.listenErr
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}
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