forked from goodrain/rainbond
-
Notifications
You must be signed in to change notification settings - Fork 0
/
docker_log_server.go
200 lines (180 loc) · 5.53 KB
/
docker_log_server.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
// Copyright (C) 2014-2018 Goodrain Co., Ltd.
// RAINBOND, Application Management Platform
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package entry
import (
"errors"
"net"
"time"
"github.com/goodrain/rainbond/eventlog/conf"
"github.com/goodrain/rainbond/eventlog/store"
"github.com/goodrain/rainbond/eventlog/util"
"golang.org/x/net/context"
"fmt"
"sync"
"github.com/Sirupsen/logrus"
zmq4 "github.com/pebbe/zmq4"
)
//DockerLogServer 日志接受服务
type DockerLogServer struct {
conf conf.DockerLogServerConf
log *logrus.Entry
cancel func()
context context.Context
server *zmq4.Socket
storemanager store.Manager
messageChan chan []byte
listenErr chan error
serverLock sync.Mutex
stopReceiveMessage bool
bufferServer *util.Server
listen *net.TCPListener
}
//NewDockerLogServer 创建zmq server服务端
func NewDockerLogServer(conf conf.DockerLogServerConf, log *logrus.Entry, storeManager store.Manager) (*DockerLogServer, error) {
ctx, cancel := context.WithCancel(context.Background())
s := &DockerLogServer{
conf: conf,
log: log,
cancel: cancel,
context: ctx,
storemanager: storeManager,
listenErr: make(chan error),
}
s.log.Info("receive docker container log server start.")
if conf.Mode == "zmq" {
server, err := zmq4.NewSocket(zmq4.SUB)
server.SetSubscribe("")
if err != nil {
s.log.Error("create rep zmq socket error.", err.Error())
return nil, err
}
address := fmt.Sprintf("tcp://%s:%d", s.conf.BindIP, s.conf.BindPort)
server.Bind(address)
s.log.Infof("Docker container log server listen %s", address)
s.server = server
} else {
// creates a tcp listener
tcpAddr, err := net.ResolveTCPAddr("tcp4", fmt.Sprintf("%s:%d", s.conf.BindIP, s.conf.BindPort))
if err != nil {
s.log.Error("create stream log server address error.", err.Error())
return nil, err
}
listener, err := net.ListenTCP("tcp", tcpAddr)
if err != nil {
s.log.Error("create stream log server listener error.", err.Error())
return nil, err
}
s.listen = listener
// creates a server
config := &util.Config{
PacketSendChanLimit: 10,
PacketReceiveChanLimit: 5000,
}
s.bufferServer = util.NewServer(config, s, s.context)
s.log.Infof("Docker container log server listen %s", tcpAddr)
}
s.messageChan = s.storemanager.DockerLogMessageChan()
if s.messageChan == nil {
return nil, errors.New("receive log message server can not get store message chan ")
}
return s, nil
}
//Serve 执行
func (s *DockerLogServer) Serve() {
if s.conf.Mode == "zmq" {
s.handleMessage()
} else {
s.bufferServer.Start(s.listen, 3*time.Second)
}
}
// OnConnect is called when the connection was accepted,
// If the return value of false is closed
func (s *DockerLogServer) OnConnect(c *util.Conn) bool {
s.log.Debugf("receive a log client connect.")
return true
}
// OnMessage is called when the connection receives a packet,
// If the return value of false is closed
func (s *DockerLogServer) OnMessage(p util.Packet) bool {
if len(p.Serialize()) > 0 {
select {
case s.messageChan <- p.Serialize():
return true
default:
//TODO: return false and receive exist
return true
}
} else {
logrus.Error("receive a null message")
}
return true
}
// OnClose is called when the connection closed
func (s *DockerLogServer) OnClose(*util.Conn) {
s.log.Debugf("a log client closed.")
}
//Stop 停止
func (s *DockerLogServer) Stop() {
s.cancel()
if s.bufferServer != nil {
s.bufferServer.Stop()
}
s.log.Info("receive event message server stop")
}
func (s *DockerLogServer) handleMessage() {
chQuit := make(chan interface{})
chErr := make(chan error, 2)
channel := make(chan []byte, s.conf.CacheMessageSize)
newServerListen := func(sock *zmq4.Socket, channel chan []byte) {
socketHandler := func(state zmq4.State) error {
msg, err := sock.RecvBytes(0)
if err != nil {
s.log.Error("server receive message error.", err.Error())
return err
}
channel <- msg
return nil
}
quitHandler := func(interface{}) error {
close(channel)
s.log.Infof("Event message receive Server quit.")
return nil
}
reactor := zmq4.NewReactor()
reactor.AddSocket(sock, zmq4.POLLIN, socketHandler)
reactor.AddChannel(chQuit, 1, quitHandler)
err := reactor.Run(100 * time.Millisecond)
chErr <- err
}
go newServerListen(s.server, channel)
func() {
for !s.stopReceiveMessage {
select {
case msg := <-channel:
s.messageChan <- msg
case <-s.context.Done():
s.log.Debug("handle message core begin close.")
close(chQuit)
s.stopReceiveMessage = true
// close(s.messageChan)
}
}
}()
s.log.Info("Handle message core stop.")
}
//ListenError listen error chan
func (s *DockerLogServer) ListenError() chan error {
return s.listenErr
}