mirror of
https://gitee.com/rainbond/Rainbond.git
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126 lines
3.6 KiB
Go
126 lines
3.6 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 connect
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import (
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"errors"
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"github.com/goodrain/rainbond/eventlog/conf"
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"github.com/goodrain/rainbond/eventlog/db"
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"github.com/goodrain/rainbond/eventlog/store"
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"fmt"
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"golang.org/x/net/context"
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"sync"
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"github.com/goodrain/rainbond/eventlog/cluster/discover"
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"github.com/Sirupsen/logrus"
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"github.com/pebbe/zmq4"
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)
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type Pub struct {
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conf conf.PubSubConf
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log *logrus.Entry
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cancel func()
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context context.Context
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pubServer *zmq4.Socket
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pubLock sync.Mutex
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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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Closed chan struct{}
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stopPubMessage bool
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discover discover.Manager
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instance *discover.Instance
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RadioChan chan db.ClusterMessage
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}
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//NewPub 创建zmq pub服务端
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func NewPub(conf conf.PubSubConf, log *logrus.Entry, storeManager store.Manager, discover discover.Manager) *Pub {
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ctx, cancel := context.WithCancel(context.Background())
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return &Pub{
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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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Closed: make(chan struct{}),
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discover: discover,
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RadioChan: make(chan db.ClusterMessage, 5),
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}
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}
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//Run 执行
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func (s *Pub) Run() error {
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s.log.Info("message receive server start.")
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pub, err := zmq4.NewSocket(zmq4.PUB)
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if err != nil {
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s.log.Error("create pub zmq socket error.", err.Error())
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return err
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}
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address := fmt.Sprintf("tcp://%s:%d", s.conf.PubBindIP, s.conf.PubBindPort)
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pub.Bind(address)
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s.log.Infof("Message pub server listen %s", address)
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s.pubServer = pub
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s.messageChan = s.storemanager.PubMessageChan()
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if s.messageChan == nil {
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return errors.New("pub log message server can not get store message chan ")
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}
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go s.handleMessage()
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s.registInstance()
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return nil
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}
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//Stop 停止
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func (s *Pub) Stop() {
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if s.instance != nil {
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s.discover.CancellationInstance(s.instance)
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}
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s.cancel()
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<-s.Closed
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s.log.Info("Stop pub message server")
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}
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func (s *Pub) handleMessage() {
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for !s.stopPubMessage {
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select {
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case msg := <-s.messageChan:
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//s.log.Debugf("Message Pub Server PUB a message %s", string(msg.Content))
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s.pubServer.SendBytes(msg[0], zmq4.SNDMORE)
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s.pubServer.SendBytes(msg[1], 0)
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case m := <-s.RadioChan:
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s.pubServer.SendBytes([]byte(m.Mode), zmq4.SNDMORE)
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s.pubServer.SendBytes(m.Data, 0)
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case <-s.context.Done():
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s.log.Debug("pub message core begin close.")
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s.stopPubMessage = true
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if err := s.pubServer.Close(); err != nil {
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s.log.Warn("Close message pub server error.", err.Error())
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}
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close(s.Closed)
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}
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}
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}
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func (s *Pub) registInstance() {
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s.instance = s.discover.RegisteredInstance(s.conf.PubBindIP, s.conf.PubBindPort, &s.stopPubMessage)
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}
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