generated from brevdev/seed
-
Notifications
You must be signed in to change notification settings - Fork 9
/
sshconfigurer.go
202 lines (166 loc) · 4.71 KB
/
sshconfigurer.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
package ssh
import (
"bytes"
"fmt"
"log"
"strings"
"text/template"
"github.com/brevdev/brev-cli/pkg/entity"
breverrors "github.com/brevdev/brev-cli/pkg/errors"
"github.com/brevdev/brev-cli/pkg/tasks"
"github.com/hashicorp/go-multierror"
)
type ConfigUpdaterStore interface {
GetContextWorkspaces() ([]entity.Workspace, error)
}
type Config interface {
Update(workspaces []entity.Workspace) error
}
type ConfigUpdater struct {
Store ConfigUpdaterStore
Configs []Config
}
var _ tasks.Task = ConfigUpdater{}
func (c ConfigUpdater) Run() error {
workspaces, err := c.Store.GetContextWorkspaces()
if err != nil {
return breverrors.WrapAndTrace(err)
}
var runningWorkspaces []entity.Workspace
for _, workspace := range workspaces {
if workspace.Status == "RUNNING" {
runningWorkspaces = append(runningWorkspaces, workspace)
}
}
var res error
for _, c := range c.Configs {
err := c.Update(runningWorkspaces)
if err != nil {
res = multierror.Append(res, err)
}
}
if res != nil {
return breverrors.WrapAndTrace(res)
}
return nil
}
func (c ConfigUpdater) GetTaskSpec() tasks.TaskSpec {
return tasks.TaskSpec{RunCronImmediately: true, Cron: "@every 3s"}
}
// SSHConfigurerV2 speciallizes in configuring ssh config with ProxyCommand
type SSHConfigurerV2 struct {
store SSHConfigurerV2Store
}
type SSHConfigurerV2Store interface {
WriteBrevSSHConfig(config string) error
GetUserSSHConfig() (string, error)
WriteUserSSHConfig(config string) error
GetPrivateKeyPath() string
GetUserSSHConfigPath() (string, error)
GetBrevSSHConfigPath() (string, error)
}
var _ Config = SSHConfigurerV2{}
func NewSSHConfigurerV2(store SSHConfigurerV2Store) *SSHConfigurerV2 {
return &SSHConfigurerV2{
store: store,
}
}
func (s SSHConfigurerV2) Update(workspaces []entity.Workspace) error {
newConfig, err := s.CreateNewSSHConfig(workspaces)
if err != nil {
return breverrors.WrapAndTrace(err)
}
err = s.store.WriteBrevSSHConfig(newConfig)
if err != nil {
return breverrors.WrapAndTrace(err)
}
err = s.EnsureConfigHasInclude()
if err != nil {
return breverrors.WrapAndTrace(err)
}
return nil
}
func (s SSHConfigurerV2) CreateNewSSHConfig(workspaces []entity.Workspace) (string, error) {
log.Print("creating new ssh config")
configPath, err := s.store.GetUserSSHConfigPath()
if err != nil {
return "", breverrors.WrapAndTrace(err)
}
sshConfig := fmt.Sprintf("# included in %s\n", configPath)
for _, w := range workspaces {
entry, err := makeSSHConfigEntry(string(w.GetLocalIdentifier(workspaces)), w.ID, s.store.GetPrivateKeyPath())
if err != nil {
return "", breverrors.WrapAndTrace(err)
}
sshConfig += entry
}
return sshConfig, nil
}
const SSHConfigEntryTemplateV2 = `Host {{ .Alias }}
IdentityFile {{ .IdentityFile }}
User {{ .User }}
ProxyCommand {{ .ProxyCommand }}
ServerAliveInterval 30
`
type SSHConfigEntryV2 struct {
Alias string
IdentityFile string
User string
ProxyCommand string
}
func makeSSHConfigEntry(alias string, workspaceID string, privateKeyPath string) (string, error) {
proxyCommand := makeProxyCommand(workspaceID)
entry := SSHConfigEntryV2{
Alias: alias,
IdentityFile: privateKeyPath,
User: "brev",
ProxyCommand: proxyCommand,
}
tmpl, err := template.New(alias).Parse(SSHConfigEntryTemplateV2)
if err != nil {
return "", breverrors.WrapAndTrace(err)
}
buf := &bytes.Buffer{}
err = tmpl.Execute(buf, entry)
if err != nil {
return "", breverrors.WrapAndTrace(err)
}
return buf.String(), nil
}
func makeProxyCommand(workspaceID string) string {
huproxyExec := "brev proxy"
return fmt.Sprintf("%s %s", huproxyExec, workspaceID)
}
func (s SSHConfigurerV2) EnsureConfigHasInclude() error {
// openssh-7.3
log.Print("ensuring has include")
brevConfigPath, err := s.store.GetBrevSSHConfigPath()
if err != nil {
return breverrors.WrapAndTrace(err)
}
conf, err := s.store.GetUserSSHConfig()
if err != nil {
return breverrors.WrapAndTrace(err)
}
if !s.doesUserSSHConfigIncludeBrevConfig(conf, brevConfigPath) {
newConf, err := s.AddIncludeToUserConfig(conf, brevConfigPath)
if err != nil {
return breverrors.WrapAndTrace(err)
}
err = s.store.WriteUserSSHConfig(newConf)
if err != nil {
return breverrors.WrapAndTrace(err)
}
}
return nil
}
func (s SSHConfigurerV2) AddIncludeToUserConfig(conf string, brevConfigPath string) (string, error) {
newConf := makeIncludeBrevStr(brevConfigPath) + conf
return newConf, nil
}
func makeIncludeBrevStr(brevSSHConfigPath string) string {
return fmt.Sprintf("Include %s\n", brevSSHConfigPath)
}
func (s SSHConfigurerV2) doesUserSSHConfigIncludeBrevConfig(conf string, brevConfigPath string) bool {
return strings.Contains(conf, makeIncludeBrevStr(brevConfigPath))
}