forked from kubernetes/kubernetes
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ovirt.go
286 lines (229 loc) · 6.86 KB
/
ovirt.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
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
/*
Copyright 2014 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package ovirt_cloud
import (
"encoding/xml"
"errors"
"fmt"
"io"
"io/ioutil"
"net"
"net/http"
"net/url"
"path"
"sort"
"strings"
"github.com/scalingdata/gcfg"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/cloudprovider"
)
const ProviderName = "ovirt"
type OVirtInstance struct {
UUID string
Name string
IPAddress string
}
type OVirtInstanceMap map[string]OVirtInstance
type OVirtCloud struct {
VmsRequest *url.URL
HostsRequest *url.URL
}
type OVirtApiConfig struct {
Connection struct {
ApiEntry string `gcfg:"uri"`
Username string `gcfg:"username"`
Password string `gcfg:"password"`
}
Filters struct {
VmsQuery string `gcfg:"vms"`
}
}
type XmlVmAddress struct {
Address string `xml:"address,attr"`
}
type XmlVmInfo struct {
UUID string `xml:"id,attr"`
Name string `xml:"name"`
Hostname string `xml:"guest_info>fqdn"`
Addresses []XmlVmAddress `xml:"guest_info>ips>ip"`
State string `xml:"status>state"`
}
type XmlVmsList struct {
XMLName xml.Name `xml:"vms"`
Vm []XmlVmInfo `xml:"vm"`
}
func init() {
cloudprovider.RegisterCloudProvider(ProviderName,
func(config io.Reader) (cloudprovider.Interface, error) {
return newOVirtCloud(config)
})
}
func newOVirtCloud(config io.Reader) (*OVirtCloud, error) {
if config == nil {
return nil, fmt.Errorf("missing configuration file for ovirt cloud provider")
}
oVirtConfig := OVirtApiConfig{}
/* defaults */
oVirtConfig.Connection.Username = "admin@internal"
if err := gcfg.ReadInto(&oVirtConfig, config); err != nil {
return nil, err
}
if oVirtConfig.Connection.ApiEntry == "" {
return nil, fmt.Errorf("missing ovirt uri in cloud provider configuration")
}
request, err := url.Parse(oVirtConfig.Connection.ApiEntry)
if err != nil {
return nil, err
}
request.Path = path.Join(request.Path, "vms")
request.User = url.UserPassword(oVirtConfig.Connection.Username, oVirtConfig.Connection.Password)
request.RawQuery = url.Values{"search": {oVirtConfig.Filters.VmsQuery}}.Encode()
return &OVirtCloud{VmsRequest: request}, nil
}
func (aws *OVirtCloud) Clusters() (cloudprovider.Clusters, bool) {
return nil, false
}
// ProviderName returns the cloud provider ID.
func (v *OVirtCloud) ProviderName() string {
return ProviderName
}
// ScrubDNS filters DNS settings for pods.
func (v *OVirtCloud) ScrubDNS(nameservers, searches []string) (nsOut, srchOut []string) {
return nameservers, searches
}
// TCPLoadBalancer returns an implementation of TCPLoadBalancer for oVirt cloud
func (v *OVirtCloud) TCPLoadBalancer() (cloudprovider.TCPLoadBalancer, bool) {
return nil, false
}
// Instances returns an implementation of Instances for oVirt cloud
func (v *OVirtCloud) Instances() (cloudprovider.Instances, bool) {
return v, true
}
// Zones returns an implementation of Zones for oVirt cloud
func (v *OVirtCloud) Zones() (cloudprovider.Zones, bool) {
return nil, false
}
// Routes returns an implementation of Routes for oVirt cloud
func (v *OVirtCloud) Routes() (cloudprovider.Routes, bool) {
return nil, false
}
// NodeAddresses returns the NodeAddresses of a particular machine instance
func (v *OVirtCloud) NodeAddresses(name string) ([]api.NodeAddress, error) {
instance, err := v.fetchInstance(name)
if err != nil {
return nil, err
}
var address net.IP
if instance.IPAddress != "" {
address = net.ParseIP(instance.IPAddress)
if address == nil {
return nil, fmt.Errorf("couldn't parse address: %s", instance.IPAddress)
}
} else {
resolved, err := net.LookupIP(name)
if err != nil || len(resolved) < 1 {
return nil, fmt.Errorf("couldn't lookup address: %s", name)
}
address = resolved[0]
}
return []api.NodeAddress{{Type: api.NodeLegacyHostIP, Address: address.String()}}, nil
}
// ExternalID returns the cloud provider ID of the specified instance (deprecated).
func (v *OVirtCloud) ExternalID(name string) (string, error) {
instance, err := v.fetchInstance(name)
if err != nil {
return "", err
}
return instance.UUID, nil
}
// InstanceID returns the cloud provider ID of the specified instance.
func (v *OVirtCloud) InstanceID(name string) (string, error) {
instance, err := v.fetchInstance(name)
if err != nil {
return "", err
}
// TODO: define a way to identify the provider instance to complete
// the format <provider_instance_id>/<instance_id>.
return "/" + instance.UUID, err
}
func getInstancesFromXml(body io.Reader) (OVirtInstanceMap, error) {
if body == nil {
return nil, fmt.Errorf("ovirt rest-api response body is missing")
}
content, err := ioutil.ReadAll(body)
if err != nil {
return nil, err
}
vmlist := XmlVmsList{}
if err := xml.Unmarshal(content, &vmlist); err != nil {
return nil, err
}
instances := make(OVirtInstanceMap)
for _, vm := range vmlist.Vm {
// Always return only vms that are up and running
if vm.Hostname != "" && strings.ToLower(vm.State) == "up" {
address := ""
if len(vm.Addresses) > 0 {
address = vm.Addresses[0].Address
}
instances[vm.Hostname] = OVirtInstance{
UUID: vm.UUID,
Name: vm.Name,
IPAddress: address,
}
}
}
return instances, nil
}
func (v *OVirtCloud) fetchAllInstances() (OVirtInstanceMap, error) {
response, err := http.Get(v.VmsRequest.String())
if err != nil {
return nil, err
}
defer response.Body.Close()
return getInstancesFromXml(response.Body)
}
func (v *OVirtCloud) fetchInstance(name string) (*OVirtInstance, error) {
allInstances, err := v.fetchAllInstances()
if err != nil {
return nil, err
}
instance, found := allInstances[name]
if !found {
return nil, fmt.Errorf("cannot find instance: %s", name)
}
return &instance, nil
}
func (m *OVirtInstanceMap) ListSortedNames() []string {
var names []string
for k := range *m {
names = append(names, k)
}
sort.Strings(names)
return names
}
// List enumerates the set of minions instances known by the cloud provider
func (v *OVirtCloud) List(filter string) ([]string, error) {
instances, err := v.fetchAllInstances()
if err != nil {
return nil, err
}
return instances.ListSortedNames(), nil
}
// Implementation of Instances.CurrentNodeName
func (v *OVirtCloud) CurrentNodeName(hostname string) (string, error) {
return hostname, nil
}
func (v *OVirtCloud) AddSSHKeyToAllInstances(user string, keyData []byte) error {
return errors.New("unimplemented")
}