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
|
package ovn
import (
"fmt"
kapi "k8s.io/api/core/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
"ovn4nfv-k8s-plugin/internal/pkg/factory"
"ovn4nfv-k8s-plugin/internal/pkg/kube"
)
// Controller structure is the object which holds the controls for starting
// and reacting upon the watched resources (e.g. pods, endpoints)
type Controller struct {
kube kube.Interface
watchFactory *factory.WatchFactory
gatewayCache map[string]string
// A cache of all logical switches seen by the watcher
logicalSwitchCache map[string]bool
// A cache of all logical ports seen by the watcher and
// its corresponding logical switch
logicalPortCache map[string]string
}
// NewOvnController creates a new OVN controller for creating logical network
// infrastructure and policy
func NewOvnController(kubeClient kubernetes.Interface, wf *factory.WatchFactory) *Controller {
return &Controller{
kube: &kube.Kube{KClient: kubeClient},
watchFactory: wf,
logicalSwitchCache: make(map[string]bool),
logicalPortCache: make(map[string]string),
gatewayCache: make(map[string]string),
}
}
// Run starts the actual watching. Also initializes any local structures needed.
func (oc *Controller) Run() error {
fmt.Println("ovn4nfvk8s watching Pods")
for _, f := range []func() error{oc.WatchPods} {
if err := f(); err != nil {
return err
}
}
return nil
}
// WatchPods starts the watching of Pod resource and calls back the appropriate handler logic
func (oc *Controller) WatchPods() error {
_, err := oc.watchFactory.AddPodHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
pod := obj.(*kapi.Pod)
if pod.Spec.NodeName != "" {
oc.addLogicalPort(pod)
}
},
UpdateFunc: func(old, newer interface{}) {
podNew := newer.(*kapi.Pod)
podOld := old.(*kapi.Pod)
if podOld.Spec.NodeName == "" && podNew.Spec.NodeName != "" {
oc.addLogicalPort(podNew)
}
},
DeleteFunc: func(obj interface{}) {
pod := obj.(*kapi.Pod)
oc.deleteLogicalPort(pod)
},
}, oc.syncPods)
return err
}
|
