测试代码如下
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package main
import (
"fmt"
"log"
"time"
"go.etcd.io/etcd/clientv3"
"golang.org/x/net/context"
)
var (
dialTimeout = 5 * time.Second
requestTimeout = 2 * time.Second
endpoints = []string{"192.168.99.106:2379", "192.168.99.107:2379", "192.168.99.108:2379"}
)
func main() {
cli, err := clientv3.New(clientv3.Config{
Endpoints: endpoints,
DialTimeout: dialTimeout,
})
if err != nil {
log.Fatal(err)
}
defer cli.Close()
key1, value1 := "testkey1", "value"
ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
_, err = cli.Put(ctx, key1, value1)
cancel()
if err != nil {
log.Println("Put failed. ", err)
} else {
log.Printf("Put {%s:%s} succeed\n", key1, value1)
}
ctx, cancel = context.WithTimeout(context.Background(), requestTimeout)
resp, err := cli.Get(ctx, key1)
cancel()
if err != nil {
log.Println("Get failed. ", err)
return
}
for _, kv := range resp.Kvs {
log.Printf("Get {%s:%s} \n", kv.Key, kv.Value)
}
done := make(chan bool)
go func() {
wch := cli.Watch(context.Background(), key1)
for item := range wch {
for _, ev := range item.Events {
log.Printf("Type:%s, key:%s, value:%s\n", ev.Type, ev.Kv.Key, ev.Kv.Value)
}
}
}()
go func() {
for cnt := 0; cnt < 11; cnt++ {
value := fmt.Sprintf("%s%d", "value", cnt)
_, err = cli.Put(context.Background(), key1, value)
if err != nil {
log.Println("Put failed. ", err)
} else {
log.Printf("Put {%s:%s} succeed\n", key1, value)
}
}
}()
<-done
log.Println("Done!")
}
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测试结果如下
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://segmentfault.com/a/1190000020374026