forked from kavanahuang/system
-
Notifications
You must be signed in to change notification settings - Fork 0
/
daemon.go
216 lines (180 loc) · 4.17 KB
/
daemon.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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
/**
* Created by Jesse
* User: jucci1887@gmail.com
* Date: 2023/6/5
* Time: 16:03
*/
package system
import (
"fmt"
"github.com/jucci1887/common"
"log"
"os"
"os/exec"
"sync"
"syscall"
"time"
)
type DaemonServices struct {
pid int
command *exec.Cmd
ExecDir string
ExecName string
PidDir string
PidName string
mutex sync.Mutex
}
var Daemon = new(DaemonServices)
// Version Set by release.
var Version = "0.0.1"
func (d *DaemonServices) New(execDir, execName, pidDir, pidName string) *DaemonServices {
d.ExecDir = execDir
d.ExecName = execName
d.PidDir = pidDir
d.PidName = pidName
return d
}
func (d *DaemonServices) GetPidPath() string {
if d.PidDir != "" && d.PidName != "" {
return GetFilepath(d.PidDir, d.PidName)
}
return ""
}
func (d *DaemonServices) GetProgramPath() string {
if d.ExecDir != "" && d.ExecName != "" {
return GetFilepath(d.ExecDir, d.ExecName)
}
return ""
}
func (d *DaemonServices) Usage() {
_, _ = fmt.Fprintf(os.Stderr, "Usage:\n")
_, _ = fmt.Fprintf(os.Stderr, " %s <command>\n", os.Args[0])
_, _ = fmt.Fprintf(os.Stderr, "\n")
_, _ = fmt.Fprintf(os.Stderr, "The commands are:\n")
for _, v := range d.msg() {
_, _ = fmt.Fprintf(os.Stderr, v)
}
_, _ = fmt.Fprintf(os.Stderr, "\n")
_, _ = fmt.Fprintf(os.Stderr, "Version:\n")
_, _ = fmt.Fprintf(os.Stderr, " %s\n", Version)
_, _ = fmt.Fprintf(os.Stderr, "\n")
}
func (d *DaemonServices) msg() map[string]string {
return map[string]string{
"start": " start start service\n",
"stop": " stop stop service\n",
"restart": " restart restart service\n",
}
}
func (d *DaemonServices) Restart() bool {
stop := d.Stop()
if stop {
time.Sleep(common.Time.IntToSecond(3))
return d.Start()
}
return false
}
func (d *DaemonServices) Start() bool {
return d.run()
}
func (d *DaemonServices) Stop() bool {
pid := d.getPid()
if pid != 0 {
return d.isStop(pid)
}
log.Println("Service stop success")
return true
}
// 判断是否需要停止程序
func (d *DaemonServices) isStop(pid int) bool {
if d.pidIsAlive(pid) {
// 根据进程 PID 获取对应的 Process 对象
process, err := os.FindProcess(pid)
if err != nil {
log.Printf("Error finding process with PID %d: %v\n\n", pid, err)
return false
}
// 向进程发送终止信号
err = process.Signal(os.Interrupt) // 或者使用 process.Signal(syscall.SIGTERM)
if err != nil {
log.Printf("Error sending signal to process with PID %d: %v\n", pid, err)
return false
}
}
log.Println("Service stop success")
return true
}
// 执行程序
func (d *DaemonServices) run() bool {
pid := d.getPid()
if pid != 0 {
if d.pidIsAlive(pid) {
log.Println("Service start success")
return true
}
}
program := d.GetProgramPath()
d.command = exec.Command(program)
d.command.Stdout = os.Stdout
err := d.command.Start()
if err != nil {
log.Println("Service start failed")
return false
} else {
pid := d.command.Process.Pid
d.isSetPid(pid)
}
return true
}
// 判断是否需要设置pid
func (d *DaemonServices) isSetPid(pid int) {
if pid > 0 {
err := d.setPid(pid)
if err != nil {
log.Println(err)
} else {
log.Println("Service start success")
}
}
}
func (d *DaemonServices) setPid(nowPid int) error {
common.Files.Perm = 0755
pidPath := d.GetPidPath()
// 创建文件
file, err := os.Create(pidPath)
if err != nil {
return fmt.Errorf("error creating pid file: %v", err)
}
defer func() { _ = file.Close() }()
// 加锁
d.mutex.Lock()
defer d.mutex.Unlock()
pidString := common.Format.FromInt(nowPid).ToString()
_, err = file.WriteString(pidString)
if err != nil {
return fmt.Errorf("error writing to pid file: %v", err)
}
return nil
}
func (d *DaemonServices) getPid() int {
pidPath := d.GetPidPath()
exists := common.Files.IsExists(pidPath)
if exists == nil {
pid := common.Files.GetFile(pidPath)
return common.Format.FromByte(pid).ToInt()
}
return 0
}
// 检查pid是否存活
func (d *DaemonServices) pidIsAlive(pid int) bool {
process, err := os.FindProcess(pid)
if err != nil {
return false
}
// 给进程发送Signal
err = process.Signal(syscall.Signal(0))
if err != nil {
return false
}
return true
}