Golang grpc.WithInsecure函数代码示例

// Dial establishes a connection for a given endpoint using the client's config
func (c *Client) Dial(endpoint string) (*grpc.ClientConn, error) {
	opts := []grpc.DialOption{
		grpc.WithBlock(),
		grpc.WithTimeout(c.cfg.DialTimeout),
	}
	if c.creds != nil {
		opts = append(opts, grpc.WithTransportCredentials(*c.creds))
	} else {
		opts = append(opts, grpc.WithInsecure())
	}
	if url, uerr := url.Parse(endpoint); uerr == nil && url.Scheme == "unix" {
		f := func(a string, t time.Duration) (net.Conn, error) {
			return net.DialTimeout("unix", a, t)
		}
		// strip unix:// prefix so certs work
		endpoint = url.Host
		opts = append(opts, grpc.WithDialer(f))
	}

	conn, err := grpc.Dial(endpoint, opts...)
	if err != nil {
		return nil, err
	}
	return conn, nil
}

// NewClientConn creates a gRPC client connection to addr.
func NewClientConn(addr string) *grpc.ClientConn {
	conn, err := grpc.Dial(addr, grpc.WithInsecure())
	if err != nil {
		grpclog.Fatalf("NewClientConn(%q) failed to create a ClientConn %v", addr, err)
	}
	return conn
}

// deleteRangeCommandFunc executes the "delegeRange" command.
func deleteRangeCommandFunc(c *cli.Context) {
	if len(c.Args()) == 0 {
		panic("bad arg")
	}

	var rangeEnd []byte
	key := []byte(c.Args()[0])
	if len(c.Args()) > 1 {
		rangeEnd = []byte(c.Args()[1])
	}
	conn, err := grpc.Dial(c.GlobalString("endpoint"), grpc.WithInsecure())
	if err != nil {
		panic(err)
	}
	etcd := pb.NewEtcdClient(conn)
	req := &pb.DeleteRangeRequest{Key: key, RangeEnd: rangeEnd}

	etcd.DeleteRange(context.Background(), req)

	if rangeEnd != nil {
		fmt.Printf("range [%s, %s) is deleted\n", string(key), string(rangeEnd))
	} else {
		fmt.Printf("key %s is deleted\n", string(key))
	}
}

// checkConsistency stops the cluster for a moment and get the hashes of KV storages.
func (c *cluster) checkConsistency() error {
	hashes := make(map[string]uint32)
	for _, u := range c.GRPCURLs {
		conn, err := grpc.Dial(u, grpc.WithInsecure(), grpc.WithTimeout(5*time.Second))
		if err != nil {
			return err
		}
		kvc := pb.NewKVClient(conn)

		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
		resp, err := kvc.Hash(ctx, &pb.HashRequest{})
		hv := resp.Hash
		if resp != nil && err != nil {
			return err
		}
		cancel()

		hashes[u] = hv
	}

	if !checkConsistency(hashes) {
		return fmt.Errorf("check consistency fails: %v", hashes)
	}
	return nil
}

// NewClientV3 creates a new grpc client connection to the member
func NewClientV3(m *member) (*clientv3.Client, error) {
	if m.grpcAddr == "" {
		return nil, fmt.Errorf("member not configured for grpc")
	}
	f := func(a string, t time.Duration) (net.Conn, error) {
		return net.Dial("unix", a)
	}
	unixdialer := grpc.WithDialer(f)
	opts := []grpc.DialOption{
		unixdialer,
		grpc.WithBlock(),
		grpc.WithTimeout(5 * time.Second)}
	if m.ClientTLSInfo != nil {
		tlscfg, err := m.ClientTLSInfo.ClientConfig()
		if err != nil {
			return nil, err
		}
		creds := credentials.NewTLS(tlscfg)
		opts = append(opts, grpc.WithTransportCredentials(creds))
	} else {
		opts = append(opts, grpc.WithInsecure())
	}
	conn, err := grpc.Dial(m.grpcAddr, opts...)
	if err != nil {
		return nil, err
	}
	return clientv3.NewFromConn(conn), nil
}

// Dial establishes a connection for a given endpoint using the client's config
func (c *Client) Dial(endpoint string) (*grpc.ClientConn, error) {
	opts := []grpc.DialOption{
		grpc.WithBlock(),
		grpc.WithTimeout(c.cfg.DialTimeout),
	}
	if c.creds != nil {
		opts = append(opts, grpc.WithTransportCredentials(*c.creds))
	} else {
		opts = append(opts, grpc.WithInsecure())
	}

	proto := "tcp"
	if url, uerr := url.Parse(endpoint); uerr == nil && url.Scheme == "unix" {
		proto = "unix"
		// strip unix:// prefix so certs work
		endpoint = url.Host
	}
	f := func(a string, t time.Duration) (net.Conn, error) {
		select {
		case <-c.ctx.Done():
			return nil, c.ctx.Err()
		default:
		}
		return net.DialTimeout(proto, a, t)
	}
	opts = append(opts, grpc.WithDialer(f))

	conn, err := grpc.Dial(endpoint, opts...)
	if err != nil {
		return nil, err
	}
	return conn, nil
}

// txnCommandFunc executes the "txn" command.
func txnCommandFunc(c *cli.Context) {
	if len(c.Args()) != 0 {
		panic("unexpected args")
	}

	reader := bufio.NewReader(os.Stdin)

	next := compareState
	txn := &pb.TxnRequest{}
	for next != nil {
		next = next(txn, reader)
	}

	conn, err := grpc.Dial(c.GlobalString("endpoint"), grpc.WithInsecure())
	if err != nil {
		panic(err)
	}
	etcd := pb.NewEtcdClient(conn)

	resp, err := etcd.Txn(context.Background(), txn)
	if err != nil {
		fmt.Println(err)
	}
	if resp.Succeeded {
		fmt.Println("executed success request list")
	} else {
		fmt.Println("executed failure request list")
	}
}

// newGrpcClient creates a new grpc client connection to the member
func NewGRPCClient(m *member) (*grpc.ClientConn, error) {
	if m.grpcAddr == "" {
		return nil, fmt.Errorf("member not configured for grpc")
	}
	f := func(a string, t time.Duration) (net.Conn, error) {
		return net.Dial("unix", a)
	}
	unixdialer := grpc.WithDialer(f)
	return grpc.Dial(m.grpcAddr, grpc.WithInsecure(), unixdialer)
}

func (s *stresser) Stress() error {
	conn, err := grpc.Dial(s.Endpoint, grpc.WithInsecure(), grpc.WithTimeout(5*time.Second))
	if err != nil {
		return fmt.Errorf("%v (%s)", err, s.Endpoint)
	}
	defer conn.Close()
	ctx, cancel := context.WithCancel(context.Background())

	wg := &sync.WaitGroup{}
	wg.Add(s.N)

	s.mu.Lock()
	s.conn = conn
	s.cancel = cancel
	s.wg = wg
	s.mu.Unlock()

	kvc := pb.NewKVClient(conn)

	for i := 0; i < s.N; i++ {
		go func(i int) {
			defer wg.Done()
			for {
				// TODO: 10-second is enough timeout to cover leader failure
				// and immediate leader election. Find out what other cases this
				// could be timed out.
				putctx, putcancel := context.WithTimeout(ctx, 10*time.Second)
				_, err := kvc.Put(putctx, &pb.PutRequest{
					Key:   []byte(fmt.Sprintf("foo%d", rand.Intn(s.KeySuffixRange))),
					Value: []byte(randStr(s.KeySize)),
				})
				putcancel()
				if err != nil {
					if grpc.ErrorDesc(err) == context.DeadlineExceeded.Error() {
						// This retries when request is triggered at the same time as
						// leader failure. When we terminate the leader, the request to
						// that leader cannot be processed, and times out. Also requests
						// to followers cannot be forwarded to the old leader, so timing out
						// as well. We want to keep stressing until the cluster elects a
						// new leader and start processing requests again.
						continue
					}
					return
				}
				s.mu.Lock()
				s.success++
				s.mu.Unlock()
			}
		}(i)
	}

	<-ctx.Done()
	return nil
}

// Dial establishes a connection for a given endpoint using the client's config
func (c *Client) Dial(endpoint string) (*grpc.ClientConn, error) {
	// TODO: enable grpc.WithTransportCredentials(creds)
	conn, err := grpc.Dial(
		endpoint,
		grpc.WithBlock(),
		grpc.WithTimeout(c.cfg.DialTimeout),
		grpc.WithInsecure())
	if err != nil {
		return nil, err
	}
	return conn, nil
}

// NewClientV3 creates a new grpc client connection to the member
func NewClientV3(m *member) (*clientv3.Client, error) {
	if m.grpcAddr == "" {
		return nil, fmt.Errorf("member not configured for grpc")
	}
	f := func(a string, t time.Duration) (net.Conn, error) {
		return net.Dial("unix", a)
	}
	unixdialer := grpc.WithDialer(f)
	conn, err := grpc.Dial(m.grpcAddr, grpc.WithInsecure(), unixdialer)
	if err != nil {
		return nil, err
	}
	return clientv3.NewFromConn(conn), nil
}

func clientSetUp(t *testing.T, addr string, cg grpc.CompressorGenerator, dg grpc.DecompressorGenerator, ua string, e env) (cc *grpc.ClientConn) {
	var derr error
	if e.security == "tls" {
		creds, err := credentials.NewClientTLSFromFile(tlsDir+"ca.pem", "x.test.youtube.com")
		if err != nil {
			t.Fatalf("Failed to create credentials %v", err)
		}
		cc, derr = grpc.Dial(addr, grpc.WithTransportCredentials(creds), grpc.WithDialer(e.dialer), grpc.WithUserAgent(ua), grpc.WithCompressor(cg), grpc.WithDecompressor(dg))
	} else {
		cc, derr = grpc.Dial(addr, grpc.WithDialer(e.dialer), grpc.WithInsecure(), grpc.WithUserAgent(ua), grpc.WithCompressor(cg), grpc.WithDecompressor(dg))
	}
	if derr != nil {
		t.Fatalf("Dial(%q) = %v", addr, derr)
	}
	return
}

// setHealthKey sets health key on all given urls.
func setHealthKey(us []string) error {
	for _, u := range us {
		conn, err := grpc.Dial(u, grpc.WithInsecure(), grpc.WithTimeout(5*time.Second))
		if err != nil {
			return fmt.Errorf("%v (%s)", err, u)
		}
		ctx, cancel := context.WithTimeout(context.Background(), time.Second)
		kvc := pb.NewKVClient(conn)
		_, err = kvc.Put(ctx, &pb.PutRequest{Key: []byte("health"), Value: []byte("good")})
		cancel()
		if err != nil {
			return err
		}
	}
	return nil
}

// Dial establishes a connection for a given endpoint using the client's config
func (c *Client) Dial(endpoint string) (*grpc.ClientConn, error) {
	opts := []grpc.DialOption{
		grpc.WithBlock(),
		grpc.WithTimeout(c.cfg.DialTimeout),
	}
	if c.creds != nil {
		opts = append(opts, grpc.WithTransportCredentials(*c.creds))
	} else {
		opts = append(opts, grpc.WithInsecure())
	}
	conn, err := grpc.Dial(endpoint, opts...)
	if err != nil {
		return nil, err
	}
	return conn, nil
}

// putCommandFunc executes the "put" command.
func putCommandFunc(c *cli.Context) {
	if len(c.Args()) != 2 {
		panic("bad arg")
	}

	key := []byte(c.Args()[0])
	value := []byte(c.Args()[1])
	conn, err := grpc.Dial(c.GlobalString("endpoint"), grpc.WithInsecure())
	if err != nil {
		panic(err)
	}
	etcd := pb.NewEtcdClient(conn)
	req := &pb.PutRequest{Key: key, Value: value}

	etcd.Put(context.Background(), req)
	fmt.Printf("%s %s\n", key, value)
}