forked from vmware-archive/atc
-
Notifications
You must be signed in to change notification settings - Fork 0
/
vault_factory.go
132 lines (102 loc) · 2.97 KB
/
vault_factory.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
package vault
import (
"path"
"sync"
"time"
"code.cloudfoundry.org/lager"
"github.com/concourse/atc/creds"
vaultapi "github.com/hashicorp/vault/api"
)
type vaultFactory struct {
vaultClient *vaultapi.Client
prefix string
token string
tokenL *sync.RWMutex
loggedIn chan struct{}
}
func NewVaultFactory(logger lager.Logger, client *vaultapi.Client, auth AuthConfig, prefix string) *vaultFactory {
factory := &vaultFactory{
vaultClient: client,
prefix: prefix,
tokenL: new(sync.RWMutex),
loggedIn: make(chan struct{}),
}
go factory.authLoop(logger, auth)
return factory
}
func (factory *vaultFactory) NewVariables(teamName string, pipelineName string) creds.Variables {
<-factory.loggedIn
return &Vault{
VaultClient: factory.clientWith(factory.currentToken()).Logical(),
PathPrefix: factory.prefix,
TeamName: teamName,
PipelineName: pipelineName,
}
}
func (factory *vaultFactory) currentToken() string {
factory.tokenL.RLock()
token := factory.token
factory.tokenL.RUnlock()
return token
}
func (factory *vaultFactory) authLoop(logger lager.Logger, config AuthConfig) {
for {
currentToken := factory.currentToken()
var token string
var delay time.Duration
if currentToken == "" {
token, delay = factory.login(logger.Session("login"), config)
} else {
token, delay = factory.renew(logger.Session("renew"), currentToken)
}
if token != "" {
factory.tokenL.Lock()
factory.token = token
if currentToken == "" {
close(factory.loggedIn)
}
factory.tokenL.Unlock()
}
time.Sleep(delay)
}
}
func (factory *vaultFactory) login(logger lager.Logger, config AuthConfig) (string, time.Duration) {
if config.ClientToken != "" {
return config.ClientToken, 0
}
backend := config.Backend
params := map[string]interface{}{}
for _, param := range config.Params {
params[param.Name] = param.Value
}
secret, err := factory.vaultClient.Logical().Write(path.Join("auth", backend, "login"), params)
if err != nil {
logger.Error("failed", err)
return "", time.Second
}
logger.Info("succeeded", lager.Data{
"token-accessor": secret.Auth.Accessor,
"lease-duration": secret.Auth.LeaseDuration,
"policies": secret.Auth.Policies,
})
return secret.Auth.ClientToken, (time.Duration(secret.Auth.LeaseDuration) * time.Second) / 2
}
func (factory *vaultFactory) renew(logger lager.Logger, token string) (string, time.Duration) {
secret, err := factory.clientWith(token).Auth().Token().RenewSelf(0)
if err != nil {
logger.Error("failed", err)
return "", time.Second
}
logger.Info("succeeded", lager.Data{
"token-accessor": secret.Auth.Accessor,
"lease-duration": secret.Auth.LeaseDuration,
"policies": secret.Auth.Policies,
})
return secret.Auth.ClientToken, (time.Duration(secret.Auth.LeaseDuration) * time.Second) / 2
}
func (factory *vaultFactory) clientWith(token string) *vaultapi.Client {
clientCopy := *factory.vaultClient
vaultClient := &clientCopy
vaultClient.SetToken(token)
return vaultClient
}