You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
1.8 KiB
81 lines
1.8 KiB
package nacos
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/go-kratos/kratos/v2/registry"
|
|
"github.com/nacos-group/nacos-sdk-go/clients/naming_client"
|
|
"github.com/nacos-group/nacos-sdk-go/model"
|
|
"github.com/nacos-group/nacos-sdk-go/vo"
|
|
)
|
|
|
|
var (
|
|
_ registry.Watcher = (*watcher)(nil)
|
|
)
|
|
|
|
type watcher struct {
|
|
serviceName string
|
|
clusters []string
|
|
groupName string
|
|
ctx context.Context
|
|
cancel context.CancelFunc
|
|
watchChan chan bool
|
|
cli naming_client.INamingClient
|
|
}
|
|
|
|
func newWatcher(ctx context.Context, cli naming_client.INamingClient, serviceName string, groupName string, clusters []string) (*watcher, error) {
|
|
w := &watcher{
|
|
serviceName: serviceName,
|
|
clusters: clusters,
|
|
groupName: groupName,
|
|
cli: cli,
|
|
watchChan: make(chan bool, 1),
|
|
}
|
|
w.ctx, w.cancel = context.WithCancel(ctx)
|
|
|
|
e := w.cli.Subscribe(&vo.SubscribeParam{
|
|
ServiceName: serviceName,
|
|
Clusters: clusters,
|
|
GroupName: groupName,
|
|
SubscribeCallback: func(services []model.SubscribeService, err error) {
|
|
w.watchChan <- true
|
|
},
|
|
})
|
|
return w, e
|
|
}
|
|
|
|
func (w *watcher) Next() ([]*registry.ServiceInstance, error) {
|
|
for {
|
|
select {
|
|
case <-w.ctx.Done():
|
|
return nil, w.ctx.Err()
|
|
case <-w.watchChan:
|
|
}
|
|
res, err := w.cli.GetService(vo.GetServiceParam{
|
|
ServiceName: w.serviceName,
|
|
GroupName: w.groupName,
|
|
Clusters: w.clusters,
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var items []*registry.ServiceInstance
|
|
for _, in := range res.Hosts {
|
|
items = append(items, ®istry.ServiceInstance{
|
|
ID: in.InstanceId,
|
|
Name: res.Name,
|
|
Version: in.Metadata["version"],
|
|
Metadata: in.Metadata,
|
|
Endpoints: []string{fmt.Sprintf("%s://%s:%d", in.Metadata["kind"], in.Ip, in.Port)},
|
|
})
|
|
}
|
|
return items, nil
|
|
}
|
|
}
|
|
|
|
func (w *watcher) Stop() error {
|
|
w.cancel()
|
|
//close
|
|
return nil
|
|
}
|
|
|