This repository has been archived by the owner on Feb 8, 2021. It is now read-only.
forked from rackspace/gophercloud
-
Notifications
You must be signed in to change notification settings - Fork 0
/
client.go
205 lines (173 loc) · 6.33 KB
/
client.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
package openstack
import (
"fmt"
"net/url"
"github.com/rackspace/gophercloud"
tokens2 "github.com/rackspace/gophercloud/openstack/identity/v2/tokens"
tokens3 "github.com/rackspace/gophercloud/openstack/identity/v3/tokens"
"github.com/rackspace/gophercloud/openstack/utils"
)
const (
v20 = "v2.0"
v30 = "v3.0"
)
// NewClient prepares an unauthenticated ProviderClient instance.
// Most users will probably prefer using the AuthenticatedClient function instead.
// This is useful if you wish to explicitly control the version of the identity service that's used for authentication explicitly,
// for example.
func NewClient(endpoint string) (*gophercloud.ProviderClient, error) {
u, err := url.Parse(endpoint)
if err != nil {
return nil, err
}
hadPath := u.Path != ""
u.Path, u.RawQuery, u.Fragment = "", "", ""
base := u.String()
endpoint = gophercloud.NormalizeURL(endpoint)
base = gophercloud.NormalizeURL(base)
if hadPath {
return &gophercloud.ProviderClient{
IdentityBase: base,
IdentityEndpoint: endpoint,
}, nil
}
return &gophercloud.ProviderClient{
IdentityBase: base,
IdentityEndpoint: "",
}, nil
}
// AuthenticatedClient logs in to an OpenStack cloud found at the identity endpoint specified by options, acquires a token, and
// returns a Client instance that's ready to operate.
// It first queries the root identity endpoint to determine which versions of the identity service are supported, then chooses
// the most recent identity service available to proceed.
func AuthenticatedClient(options gophercloud.AuthOptions) (*gophercloud.ProviderClient, error) {
client, err := NewClient(options.IdentityEndpoint)
if err != nil {
return nil, err
}
err = Authenticate(client, options)
if err != nil {
return nil, err
}
return client, nil
}
// Authenticate or re-authenticate against the most recent identity service supported at the provided endpoint.
func Authenticate(client *gophercloud.ProviderClient, options gophercloud.AuthOptions) error {
versions := []*utils.Version{
&utils.Version{ID: v20, Priority: 20, Suffix: "/v2.0/"},
&utils.Version{ID: v30, Priority: 30, Suffix: "/v3/"},
}
chosen, endpoint, err := utils.ChooseVersion(client.IdentityBase, client.IdentityEndpoint, versions)
if err != nil {
return err
}
switch chosen.ID {
case v20:
return v2auth(client, endpoint, options)
case v30:
return v3auth(client, endpoint, options)
default:
// The switch statement must be out of date from the versions list.
return fmt.Errorf("Unrecognized identity version: %s", chosen.ID)
}
}
// AuthenticateV2 explicitly authenticates against the identity v2 endpoint.
func AuthenticateV2(client *gophercloud.ProviderClient, options gophercloud.AuthOptions) error {
return v2auth(client, "", options)
}
func v2auth(client *gophercloud.ProviderClient, endpoint string, options gophercloud.AuthOptions) error {
v2Client := NewIdentityV2(client)
if endpoint != "" {
v2Client.Endpoint = endpoint
}
result := tokens2.Create(v2Client, tokens2.AuthOptions{AuthOptions: options})
token, err := result.ExtractToken()
if err != nil {
return err
}
catalog, err := result.ExtractServiceCatalog()
if err != nil {
return err
}
client.TokenID = token.ID
client.EndpointLocator = func(opts gophercloud.EndpointOpts) (string, error) {
return V2EndpointURL(catalog, opts)
}
return nil
}
// AuthenticateV3 explicitly authenticates against the identity v3 service.
func AuthenticateV3(client *gophercloud.ProviderClient, options gophercloud.AuthOptions) error {
return v3auth(client, "", options)
}
func v3auth(client *gophercloud.ProviderClient, endpoint string, options gophercloud.AuthOptions) error {
// Override the generated service endpoint with the one returned by the version endpoint.
v3Client := NewIdentityV3(client)
if endpoint != "" {
v3Client.Endpoint = endpoint
}
token, err := tokens3.Create(v3Client, options, nil).Extract()
if err != nil {
return err
}
client.TokenID = token.ID
client.EndpointLocator = func(opts gophercloud.EndpointOpts) (string, error) {
return V3EndpointURL(v3Client, opts)
}
return nil
}
// NewIdentityV2 creates a ServiceClient that may be used to interact with the v2 identity service.
func NewIdentityV2(client *gophercloud.ProviderClient) *gophercloud.ServiceClient {
v2Endpoint := client.IdentityBase + "v2.0/"
return &gophercloud.ServiceClient{
ProviderClient: client,
Endpoint: v2Endpoint,
}
}
// NewIdentityV3 creates a ServiceClient that may be used to access the v3 identity service.
func NewIdentityV3(client *gophercloud.ProviderClient) *gophercloud.ServiceClient {
v3Endpoint := client.IdentityBase + "v3/"
return &gophercloud.ServiceClient{
ProviderClient: client,
Endpoint: v3Endpoint,
}
}
// NewObjectStorageV1 creates a ServiceClient that may be used with the v1 object storage package.
func NewObjectStorageV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
eo.ApplyDefaults("object-store")
url, err := client.EndpointLocator(eo)
if err != nil {
return nil, err
}
return &gophercloud.ServiceClient{ProviderClient: client, Endpoint: url}, nil
}
// NewComputeV2 creates a ServiceClient that may be used with the v2 compute package.
func NewComputeV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
eo.ApplyDefaults("compute")
url, err := client.EndpointLocator(eo)
if err != nil {
return nil, err
}
return &gophercloud.ServiceClient{ProviderClient: client, Endpoint: url}, nil
}
// NewNetworkV2 creates a ServiceClient that may be used with the v2 network package.
func NewNetworkV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
eo.ApplyDefaults("network")
url, err := client.EndpointLocator(eo)
if err != nil {
return nil, err
}
return &gophercloud.ServiceClient{
ProviderClient: client,
Endpoint: url,
ResourceBase: url + "v2.0/",
}, nil
}
// NewBlockStorageV1 creates a ServiceClient that may be used to access the v1 block storage service.
func NewBlockStorageV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
eo.ApplyDefaults("volume")
url, err := client.EndpointLocator(eo)
if err != nil {
return nil, err
}
return &gophercloud.ServiceClient{ProviderClient: client, Endpoint: url}, nil
}