etcd_client.go

package main

import (
	"fmt"
	"time"

	"golang.org/x/net/context"

	"github.com/coreos/etcd/clientv3"
	"github.com/opentracing/opentracing-go"
)

func main() {
	cli, err := clientv3.New(clientv3.Config{
		Endpoints:   []string{"localhost:12379", "localhost:22379", "localhost:32379"},
		DialTimeout: 5 * time.Second,
	})
	if err != nil {
		fmt.Println(err)
		return
	}
	tracer := // Tracer creation goes here.
	opentracing.InitGlobalTracer(tracer)
	for {
		sp, ctx := opentracing.StartSpanFromContext(context.Background(), "arbritraryWork")
		time.Sleep(200 * time.Millisecond)
		resp, err := cli.KV.Put(ctx, "sample_key", "sample_value")
		if err != nil {
			fmt.Println("swag")
		}
		fmt.Println(resp)
		time.Sleep(time.Millisecond * 100)
		sp.Finish()
	}
	defer cli.Close()
}