-
Notifications
You must be signed in to change notification settings - Fork 0
/
register.go
70 lines (63 loc) · 1.5 KB
/
register.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
package service
import (
"context"
"log"
"time"
"go.etcd.io/etcd/clientv3"
)
type ServiceRegister struct {
cli *clientv3.Client
leaseID clientv3.LeaseID
keepAliveC <-chan *clientv3.LeaseKeepAliveResponse
key string
val string
}
func NewServiceRegister(endpoints []string, name, addr string, lease int64) (*ServiceRegister, error) {
cli, err := clientv3.New(clientv3.Config{
Endpoints: endpoints,
DialTimeout: 5 * time.Second,
})
if err != nil {
log.Fatal(err)
}
s := &ServiceRegister{
cli: cli,
key: "/" + schema + "/" + name + "/" + addr,
val: addr,
}
if err := s.putKeyWithLease(lease); err != nil {
return nil, err
}
return s, nil
}
func (s *ServiceRegister) putKeyWithLease(lease int64) error {
resp, err := s.cli.Grant(context.Background(), lease)
if err != nil {
return err
}
_, err = s.cli.Put(context.Background(), s.key, s.val, clientv3.WithLease(resp.ID))
if err != nil {
return err
}
leaseRespC, err := s.cli.KeepAlive(context.Background(), resp.ID)
if err != nil {
return err
}
s.leaseID = resp.ID
s.keepAliveC = leaseRespC
log.Println("Put key: %s val: %s success!", s.key, s.val)
return nil
}
func (s *ServiceRegister) ListenLeaseRespC() {
for leaseResp := range s.keepAliveC {
log.Panicln("续约成功", leaseResp)
}
log.Println("关闭续约")
}
func (s *ServiceRegister) Close() error {
if _, err := s.cli.Revoke(context.Background(), s.leaseID); err != nil {
return err
}
log.Println("撤销续约")
return s.cli.Close()
}