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go-micro/registry/kubernetes/watcher.go

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package kubernetes
import (
"fmt"
"net"
"time"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
"github.com/GoogleCloudPlatform/kubernetes/pkg/proxy/config"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
)
type watcher struct {
registry *kregistry
}
func (k *watcher) OnUpdate(services []api.Service) {
fmt.Println("got update")
activeServices := util.StringSet{}
for _, svc := range services {
fmt.Printf("%#v\n", svc.ObjectMeta)
name, exists := svc.ObjectMeta.Labels["name"]
if !exists {
continue
}
activeServices.Insert(name)
serviceIP := net.ParseIP(svc.Spec.PortalIP)
ks := &service{
name: name,
nodes: []*node{
&node{
address: serviceIP.String(),
port: svc.Spec.Ports[0].Port,
},
},
}
k.registry.mtx.Lock()
k.registry.services[name] = ks
k.registry.mtx.Unlock()
}
k.registry.mtx.Lock()
defer k.registry.mtx.Unlock()
for name, _ := range k.registry.services {
if !activeServices.Has(name) {
delete(k.registry.services, name)
}
}
}
func newWatcher(kr *kregistry) *watcher {
serviceConfig := config.NewServiceConfig()
endpointsConfig := config.NewEndpointsConfig()
config.NewSourceAPI(
kr.client.Services(api.NamespaceAll),
kr.client.Endpoints(api.NamespaceAll),
time.Second*10,
serviceConfig.Channel("api"),
endpointsConfig.Channel("api"),
)
ks := &watcher{
registry: kr,
}
serviceConfig.RegisterHandler(ks)
return ks
}