forked from openshift/origin
-
Notifications
You must be signed in to change notification settings - Fork 0
/
registry.go
331 lines (284 loc) · 9.62 KB
/
registry.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
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
package plugin
import (
"fmt"
"net"
"strings"
"time"
log "github.com/golang/glog"
kapi "k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/client/cache"
kclient "k8s.io/kubernetes/pkg/client/unversioned"
"k8s.io/kubernetes/pkg/fields"
"k8s.io/kubernetes/pkg/labels"
osclient "github.com/openshift/origin/pkg/client"
oscache "github.com/openshift/origin/pkg/client/cache"
osapi "github.com/openshift/origin/pkg/sdn/api"
)
type NetworkInfo struct {
ClusterNetwork *net.IPNet
ServiceNetwork *net.IPNet
HostSubnetLength uint32
PluginName string
}
type Registry struct {
oClient *osclient.Client
kClient *kclient.Client
// Cache cluster network information
NetworkInfo *NetworkInfo
}
type ResourceName string
const (
Nodes ResourceName = "Nodes"
Namespaces ResourceName = "Namespaces"
NetNamespaces ResourceName = "NetNamespaces"
Services ResourceName = "Services"
HostSubnets ResourceName = "HostSubnets"
Pods ResourceName = "Pods"
EgressNetworkPolicies ResourceName = "EgressNetworkPolicies"
)
func newRegistry(osClient *osclient.Client, kClient *kclient.Client) *Registry {
return &Registry{
oClient: osClient,
kClient: kClient,
}
}
func (registry *Registry) GetSubnets() ([]osapi.HostSubnet, error) {
hostSubnetList, err := registry.oClient.HostSubnets().List(kapi.ListOptions{})
if err != nil {
return nil, err
}
return hostSubnetList.Items, nil
}
func (registry *Registry) GetSubnet(nodeName string) (*osapi.HostSubnet, error) {
return registry.oClient.HostSubnets().Get(nodeName)
}
func (registry *Registry) DeleteSubnet(nodeName string) error {
return registry.oClient.HostSubnets().Delete(nodeName)
}
func (registry *Registry) CreateSubnet(nodeName, nodeIP, subnetCIDR string) (*osapi.HostSubnet, error) {
hs := &osapi.HostSubnet{
TypeMeta: unversioned.TypeMeta{Kind: "HostSubnet"},
ObjectMeta: kapi.ObjectMeta{Name: nodeName},
Host: nodeName,
HostIP: nodeIP,
Subnet: subnetCIDR,
}
return registry.oClient.HostSubnets().Create(hs)
}
func (registry *Registry) UpdateSubnet(hs *osapi.HostSubnet) (*osapi.HostSubnet, error) {
return registry.oClient.HostSubnets().Update(hs)
}
func (registry *Registry) GetRunningPods(nodeName, namespace string) ([]kapi.Pod, error) {
fieldSelector := fields.Set{"spec.host": nodeName}.AsSelector()
opts := kapi.ListOptions{
LabelSelector: labels.Everything(),
FieldSelector: fieldSelector,
}
podList, err := registry.kClient.Pods(namespace).List(opts)
if err != nil {
return nil, err
}
// Filter running pods
pods := make([]kapi.Pod, 0, len(podList.Items))
for _, pod := range podList.Items {
if pod.Status.Phase == kapi.PodRunning {
pods = append(pods, pod)
}
}
return pods, nil
}
func (registry *Registry) GetPod(nodeName, namespace, podName string) (*kapi.Pod, error) {
fieldSelector := fields.Set{"spec.host": nodeName}.AsSelector()
opts := kapi.ListOptions{
LabelSelector: labels.Everything(),
FieldSelector: fieldSelector,
}
podList, err := registry.kClient.Pods(namespace).List(opts)
if err != nil {
return nil, err
}
for _, pod := range podList.Items {
if pod.ObjectMeta.Name == podName {
return &pod, nil
}
}
return nil, nil
}
func (registry *Registry) UpdateClusterNetwork(ni *NetworkInfo) error {
cn, err := registry.oClient.ClusterNetwork().Get(osapi.ClusterNetworkDefault)
if err != nil {
return err
}
cn.Network = ni.ClusterNetwork.String()
cn.HostSubnetLength = ni.HostSubnetLength
cn.ServiceNetwork = ni.ServiceNetwork.String()
cn.PluginName = ni.PluginName
updatedNetwork, err := registry.oClient.ClusterNetwork().Update(cn)
if err != nil {
return err
}
log.Infof("Updated ClusterNetwork %s", clusterNetworkToString(updatedNetwork))
return nil
}
func (registry *Registry) CreateClusterNetwork(ni *NetworkInfo) error {
cn := &osapi.ClusterNetwork{
TypeMeta: unversioned.TypeMeta{Kind: "ClusterNetwork"},
ObjectMeta: kapi.ObjectMeta{Name: osapi.ClusterNetworkDefault},
Network: ni.ClusterNetwork.String(),
HostSubnetLength: ni.HostSubnetLength,
ServiceNetwork: ni.ServiceNetwork.String(),
PluginName: ni.PluginName,
}
updatedNetwork, err := registry.oClient.ClusterNetwork().Create(cn)
if err != nil {
return err
}
log.Infof("Created ClusterNetwork %s", clusterNetworkToString(updatedNetwork))
return nil
}
func validateClusterNetwork(network string, hostSubnetLength uint32, serviceNetwork string, pluginName string) (*NetworkInfo, error) {
_, cn, err := net.ParseCIDR(network)
if err != nil {
return nil, fmt.Errorf("Failed to parse ClusterNetwork CIDR %s: %v", network, err)
}
_, sn, err := net.ParseCIDR(serviceNetwork)
if err != nil {
return nil, fmt.Errorf("Failed to parse ServiceNetwork CIDR %s: %v", serviceNetwork, err)
}
if hostSubnetLength <= 0 || hostSubnetLength > 32 {
return nil, fmt.Errorf("Invalid HostSubnetLength %d (not between 1 and 32)", hostSubnetLength)
}
return &NetworkInfo{
ClusterNetwork: cn,
ServiceNetwork: sn,
HostSubnetLength: hostSubnetLength,
PluginName: pluginName,
}, nil
}
func (registry *Registry) GetNetworkInfo() (*NetworkInfo, error) {
// Check if we got cached network info
if registry.NetworkInfo != nil {
return registry.NetworkInfo, nil
}
cn, err := registry.oClient.ClusterNetwork().Get(osapi.ClusterNetworkDefault)
if err != nil {
return nil, err
}
registry.NetworkInfo, err = validateClusterNetwork(cn.Network, cn.HostSubnetLength, cn.ServiceNetwork, cn.PluginName)
if err != nil {
return nil, err
}
return registry.NetworkInfo, nil
}
func (registry *Registry) GetNetNamespaces() ([]osapi.NetNamespace, error) {
netNamespaceList, err := registry.oClient.NetNamespaces().List(kapi.ListOptions{})
if err != nil {
return nil, err
}
return netNamespaceList.Items, nil
}
func (registry *Registry) GetNetNamespace(name string) (*osapi.NetNamespace, error) {
return registry.oClient.NetNamespaces().Get(name)
}
func (registry *Registry) CreateNetNamespace(name string, id uint32) error {
netns := &osapi.NetNamespace{
TypeMeta: unversioned.TypeMeta{Kind: "NetNamespace"},
ObjectMeta: kapi.ObjectMeta{Name: name},
NetName: name,
NetID: id,
}
_, err := registry.oClient.NetNamespaces().Create(netns)
return err
}
func (registry *Registry) UpdateNetNamespace(netns *osapi.NetNamespace) (*osapi.NetNamespace, error) {
return registry.oClient.NetNamespaces().Update(netns)
}
func (registry *Registry) DeleteNetNamespace(name string) error {
return registry.oClient.NetNamespaces().Delete(name)
}
func (registry *Registry) GetServicesForNamespace(namespace string) ([]kapi.Service, error) {
return registry.getServices(namespace)
}
func (registry *Registry) GetServices() ([]kapi.Service, error) {
return registry.getServices(kapi.NamespaceAll)
}
func (registry *Registry) getServices(namespace string) ([]kapi.Service, error) {
kServList, err := registry.kClient.Services(namespace).List(kapi.ListOptions{})
if err != nil {
return nil, err
}
servList := make([]kapi.Service, 0, len(kServList.Items))
for _, service := range kServList.Items {
if !kapi.IsServiceIPSet(&service) {
continue
}
servList = append(servList, service)
}
return servList, nil
}
func (registry *Registry) GetEgressNetworkPolicies() ([]osapi.EgressNetworkPolicy, error) {
policyList, err := registry.oClient.EgressNetworkPolicies(kapi.NamespaceAll).List(kapi.ListOptions{})
if err != nil {
return nil, err
}
return policyList.Items, nil
}
// Run event queue for the given resource
func (registry *Registry) RunEventQueue(resourceName ResourceName) *oscache.EventQueue {
var client cache.Getter
var expectedType interface{}
switch resourceName {
case HostSubnets:
expectedType = &osapi.HostSubnet{}
client = registry.oClient
case NetNamespaces:
expectedType = &osapi.NetNamespace{}
client = registry.oClient
case Nodes:
expectedType = &kapi.Node{}
client = registry.kClient
case Namespaces:
expectedType = &kapi.Namespace{}
client = registry.kClient
case Services:
expectedType = &kapi.Service{}
client = registry.kClient
case Pods:
expectedType = &kapi.Pod{}
client = registry.kClient
case EgressNetworkPolicies:
expectedType = &osapi.EgressNetworkPolicy{}
client = registry.oClient
default:
log.Fatalf("Unknown resource %s during initialization of event queue", resourceName)
}
lw := cache.NewListWatchFromClient(client, strings.ToLower(string(resourceName)), kapi.NamespaceAll, fields.Everything())
eventQueue := oscache.NewEventQueue(cache.MetaNamespaceKeyFunc)
// Repopulate event queue every 30 mins
// Existing items in the event queue will have watch.Modified event type
cache.NewReflector(lw, expectedType, eventQueue, 30*time.Minute).Run()
return eventQueue
}
func (registry *Registry) ValidateNodeIP(nodeIP string) error {
if nodeIP == "" || nodeIP == "127.0.0.1" {
return fmt.Errorf("Invalid node IP %q", nodeIP)
}
ni, err := registry.GetNetworkInfo()
if err != nil {
return fmt.Errorf("Failed to get network information: %v", err)
}
// Ensure each node's NodeIP is not contained by the cluster network,
// which could cause a routing loop. (rhbz#1295486)
ipaddr := net.ParseIP(nodeIP)
if ipaddr == nil {
return fmt.Errorf("Failed to parse node IP %s", nodeIP)
}
if ni.ClusterNetwork.Contains(ipaddr) {
return fmt.Errorf("Node IP %s conflicts with cluster network %s", nodeIP, ni.ClusterNetwork.String())
}
return nil
}
func clusterNetworkToString(n *osapi.ClusterNetwork) string {
return fmt.Sprintf("%s (network: %q, hostSubnetBits: %d, serviceNetwork: %q, pluginName: %q)", n.Name, n.Network, n.HostSubnetLength, n.ServiceNetwork, n.PluginName)
}