Working with etcd through Go client

main.go

package main

import (
	"context"
	"crypto/tls"
	"time"

	"github.com/sirupsen/logrus"
	v3 "go.etcd.io/etcd/clientv3"
	"go.etcd.io/etcd/pkg/transport"
)

func main() {
	tlsinfo := transport.TLSInfo{}
	tlsinfo.CertFile = "./etcd/server.crt"
	tlsinfo.KeyFile = "./etcd/server.key"
	tlsinfo.TrustedCAFile = "./etcd/ca.crt"
	var tlsConf *tls.Config
	if !tlsinfo.Empty() {
		tlsConf, _ = tlsinfo.ClientConfig()
	}

	etcdClient, err := v3.New(v3.Config{
		Endpoints:        []string{"127.0.0.1:2379"},
		DialTimeout:      time.Minute,
		AutoSyncInterval: time.Minute,
		TLS:              tlsConf,
	})
	if err != nil {
		logrus.WithError(err).Fatal("Failed to new etcd client")
	}

	todoCtx := context.TODO()
	defaultOpts := []v3.OpOption{v3.WithPrefix(), v3.WithKeysOnly(), v3.WithSerializable()}
	ctx, cancel := context.WithTimeout(todoCtx, 5*time.Second)
	defer cancel()
	resp, err := etcdClient.Get(ctx, "/", defaultOpts...)
	if err != nil {
		logrus.WithError(err).Fatal("Failed to Get keys with prefix \\")
	}
	for _, kv := range resp.Kvs {
		logrus.Infof("Key: %s", string(kv.Key))
	}
}