go任務(wù)調(diào)度8（op取代get,put,delete方法）

package main

import (
    "go.etcd.io/etcd/clientv3"
    "time"
    "fmt"
    "context"
)

func main() {
    var (
        config clientv3.Config
        client *clientv3.Client
        err error
        kv clientv3.KV
        putOp clientv3.Op
        getOp clientv3.Op
        opResp clientv3.OpResponse
    )

    // 客戶端配置
    config = clientv3.Config{
        Endpoints: []string{"0.0.0.0:2379"},
        DialTimeout: 5 * time.Second,
    }

    // 建立連接
    if client, err = clientv3.New(config); err != nil {
        fmt.Println(err)
        return
    }

    kv = clientv3.NewKV(client)

    // 創(chuàng)建Op: operation
    putOp = clientv3.OpPut("/cron/jobs/job8", "123123123")

    // 執(zhí)行OP
    if opResp, err = kv.Do(context.TODO(), putOp); err != nil {
        fmt.Println(err)
        return
    }

    // kv.Do(op)

    // kv.Put
    // kv.Get
    // kv.Delete

    fmt.Println("寫入Revision:", opResp.Put().Header.Revision)

    // 創(chuàng)建Op
    getOp = clientv3.OpGet("/cron/jobs/job8")

    // 執(zhí)行OP
    if opResp, err = kv.Do(context.TODO(), getOp); err != nil {
        fmt.Println(err)
        return
    }

    // 打印
    fmt.Println("數(shù)據(jù)Revision:", opResp.Get().Kvs[0].ModRevision) // create rev == mod rev
    fmt.Println("數(shù)據(jù)value:", string(opResp.Get().Kvs[0].Value))
}

執(zhí)行：

[root@bogon etcd]# go run demo9.go
寫入Revision: 42
數(shù)據(jù)Revision: 42
數(shù)據(jù)value: 123123123