forked from cloudius-systems/capstan
/
gce.go
269 lines (236 loc) · 5.58 KB
/
gce.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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
/*
* Copyright (C) 2014 Cloudius Systems, Ltd.
*
* This work is open source software, licensed under the terms of the
* BSD license as described in the LICENSE file in the top-level directory.
*/
package gce
import (
"github.com/cloudius-systems/capstan/util"
"gopkg.in/yaml.v1"
"io/ioutil"
"path/filepath"
"fmt"
"os"
"os/exec"
"regexp"
"strings"
)
type VMConfig struct {
Name string
Image string
Network string
MachineType string
Zone string
CloudStoragePath string
Tarball string
ConfigFile string
InstanceDir string
BootDisk string
}
func LaunchVM(c *VMConfig) (*exec.Cmd, error) {
err := LoginCheck()
if err != nil {
return nil, err
}
err = vmUploadImage(c)
if err != nil {
return nil, err
}
defer vmDeleteImage(c)
err = vmCreate(c)
if err != nil {
return nil, err
}
StoreConfig(c)
err = vmPrintInfo(c)
if err != nil {
return nil, err
}
return nil, nil
}
func StopVM(name string) error {
return gcUtil("deleteinstance", "--nodelete_boot_pd", "-f", name)
}
func vmCreate(c *VMConfig) error {
var err error
if c.BootDisk == "" {
err = gcUtil("addinstance", "--image", c.Image, "--network", c.Network, "--machine_type", c.MachineType, "--zone", c.Zone, c.Name)
c.BootDisk = c.Image
} else {
err = gcUtil("addinstance", "--disk", c.BootDisk + ",boot", "--network", c.Network, "--machine_type", c.MachineType, "--zone", c.Zone, c.Name)
}
if err != nil {
return err
}
return nil
}
func vmDeleteImage(c *VMConfig) error {
if c.Tarball != "" {
c.Tarball = ""
err := gsUtil("rm", c.CloudStoragePath)
if err != nil {
return err
}
}
err := gcUtil("deleteimage", "-f", c.Image)
if err != nil {
return err
}
return nil
}
func vmUploadImage(c *VMConfig) error {
if c.Tarball != "" {
err := gsUtil("cp", c.Tarball, c.CloudStoragePath)
if err != nil {
return err
}
}
err := gcUtil("addimage", c.Image, c.CloudStoragePath)
if err != nil {
return err
}
return nil
}
func vmGetInfo(name string) (string, string, string, error) {
status, externalIP, internalIP := "", "Unknow", "Unknow"
cmd := exec.Command("gcutil", "getinstance", name)
out, err := cmd.Output()
if err != nil {
return status, externalIP, internalIP, nil
}
lines := strings.Split(string(out), "\n")
r, _ := regexp.Compile("\\|(.*)\\|(.*)\\|")
for _, line := range lines {
match := r.FindStringSubmatch(line)
if len(match) != 3 {
continue
}
key := strings.TrimSpace(match[1])
value := strings.TrimSpace(match[2])
if key == "external-ip" {
externalIP = value
} else if key == "ip" {
internalIP = value
} else if key == "status" {
status = value
}
}
return status, externalIP, internalIP, nil
}
func vmPrintInfo(c *VMConfig) error {
_, externalIP, internalIP, err := vmGetInfo(c.Name)
if err != nil {
fmt.Printf("Failed To Get Instance IP Info: %s\n", c.Name)
return err
}
fmt.Printf("Public IP: %s\n", externalIP)
fmt.Printf("Internal IP: %s\n", internalIP)
fmt.Printf("Machine Type: %s\n", c.MachineType)
fmt.Printf("Zone : %s\n", c.Zone)
fmt.Printf("Serial : gcutil getserialportoutput %s\n", c.Name)
fmt.Printf("SSH : gcutil ssh %s\n", c.Name)
fmt.Printf("SSH : ssh admin@%s\n", externalIP)
return nil
}
func DeleteVM(name string) error {
gcUtil("deleteinstance", "--delete_boot_pd", "-f", name)
gcUtil("deletedisk", "-f", name)
dir := filepath.Join(util.HomePath(), ".capstan/instances/gce", name)
c := &VMConfig{
InstanceDir: dir,
ConfigFile: filepath.Join(dir, "osv.config"),
}
cmd := exec.Command("rm", "-f", c.ConfigFile)
_, err := cmd.Output()
if err != nil {
fmt.Printf("rm failed: %s", c.ConfigFile)
return err
}
cmd = exec.Command("rmdir", c.InstanceDir)
_, err = cmd.Output()
if err != nil {
fmt.Printf("rmdir failed: %s", c.InstanceDir)
return err
}
return nil
}
func gsUtil(args ...string) error {
cmd := exec.Command("gsutil", args...)
err := cmd.Start()
if err != nil {
return err
}
err = cmd.Wait()
if err != nil {
return fmt.Errorf("gcutil %s", args)
}
return nil
}
func gcUtil(args ...string) error {
cmd := exec.Command("gcutil", args...)
err := cmd.Start()
if err != nil {
return err
}
err = cmd.Wait()
if err != nil {
return fmt.Errorf("gcutil %s", args)
}
return nil
}
func GetVMStatus(name, dir string) (string, error) {
status, _, _, err := vmGetInfo(name)
if err != nil {
return "Stopped", err
}
if status == "RUNNING" {
return "Running", nil
} else if status == "STOPPING" {
return "Running", nil
} else {
return "Stopped", nil
}
}
func StoreConfig(c *VMConfig) error {
dir := c.InstanceDir
err := os.MkdirAll(dir, 0775)
if err != nil {
fmt.Printf("mkdir failed: %s", dir)
return err
}
data, err := yaml.Marshal(c)
if err != nil {
return err
}
return ioutil.WriteFile(c.ConfigFile, data, 0644)
}
func LoadConfig(name string) (*VMConfig, error) {
dir := filepath.Join(util.HomePath(), ".capstan/instances/gce", name)
file := filepath.Join(dir, "osv.config")
c := VMConfig{}
data, err := ioutil.ReadFile(file)
if err != nil {
fmt.Printf("Failed to open: %s\n", file)
return nil, err
}
err = yaml.Unmarshal(data, &c)
if err != nil {
return nil, err
}
return &c, nil
}
func LoginCheck() (error) {
_, err := exec.LookPath("gcutil")
if err != nil {
fmt.Println("gcutil is not found. Please install Google Cloud SDK:")
fmt.Println("https://developers.google.com/cloud/sdk")
return err
}
out, err := exec.Command("gcutil", "whoami").CombinedOutput()
if err != nil {
fmt.Println(string(out))
return err
}
return nil
}