[#131] client: implement dialing config

Signed-off-by: olefirenque <egor.olefirenko892@gmail.com>

client/client.go

@@ -114,13 +114,47 @@ func (c *Client) Dial(ctx context.Context, prm PrmDial) error {
 	return nil
 }
 
-func (c *Client) netMapDialNode(ctx context.Context, node *netmap.NodeInfo) error {
-	// TODO: implement dialing options
+func (c *Client) netMapDialNode(ctx context.Context, node *netmap.NodeInfo, prm PrmNetMapDial) error {
 	addresses := node.ExternalAddresses()
-	return c.Dial(ctx, PrmDial{Endpoint: addresses[0]})
+
+	dialAddr := func(addr string) error {
+		err := c.Dial(ctx, PrmDial{Endpoint: addr})
+		if err != nil {
+			if !prm.FallbackToAvailableAddress {
+				return err
+			}
+			if !errors.Is(err, context.Canceled) && !errors.Is(err, context.DeadlineExceeded) {
+				return err
+			}
+		}
+		return nil
+	}
+
+	if prm.UseRandomAddress {
+		// Use map for randomized iteration over addresses
+		addressesMap := make(map[string]struct{})
+		for _, addr := range addresses {
+			addressesMap[addr] = struct{}{}
+		}
+
+		for addr := range addressesMap {
+			err := dialAddr(addr)
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	for _, addr := range addresses {
+		err := dialAddr(addr)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
 }
 
-func (c *Client) NetMapDial(ctx context.Context, endpoint string) error {
+func (c *Client) NetMapDial(ctx context.Context, endpoint string, prm PrmNetMapDial) error {
 	u, err := url.Parse(endpoint)
 	if err != nil {
 		return err
@@ -130,7 +164,7 @@ func (c *Client) NetMapDial(ctx context.Context, endpoint string) error {
 		nodes := c.prm.NetMap.Nodes()
 		for _, node := range nodes {
 			if bytes.Equal([]byte(u.Host), node.PublicKey()) {
-				return c.netMapDialNode(ctx, &node)
+				return c.netMapDialNode(ctx, &node, prm)
 			}
 		}
 	}
@@ -210,12 +244,7 @@ const (
 	defaultStreamTimeout = 10 * time.Second
 )
 
-// PrmDial groups connection parameters for the Client.
-//
-// See also Dial.
-type PrmDial struct {
-	Endpoint string
-
+type PrmDialOptions struct {
 	TLSConfig *tls.Config
 
 	// If DialTimeout is non-positive, then it's set to defaultDialTimeout.
@@ -227,6 +256,24 @@ type PrmDial struct {
 	GRPCDialOptions []grpc.DialOption
 }
 
+// PrmDial groups connection parameters for the Dial call in the Client.
+//
+// See also Dial.
+type PrmDial struct {
+	Endpoint string
+
+	PrmDialOptions
+}
+
+// PrmNetMapDial groups connection parameters for the NetMapDial call in the Client.
+type PrmNetMapDial struct {
+	UseExternalAddresses       bool
+	UseRandomAddress           bool
+	FallbackToAvailableAddress bool
+
+	PrmDialOptions
+}
+
 // SetServerURI sets server URI in the FrostFS network.
 // Required parameter.
 //
@@ -251,30 +298,30 @@ func (x *PrmDial) SetServerURI(endpoint string) {
 //
 // See also SetServerURI.
 //
-// Depreacted: Use PrmDial.TLSConfig instead.
-func (x *PrmDial) SetTLSConfig(tlsConfig *tls.Config) {
+// Deprecated: Use PrmDialOptions.TLSConfig instead.
+func (x *PrmDialOptions) SetTLSConfig(tlsConfig *tls.Config) {
 	x.TLSConfig = tlsConfig
 }
 
 // SetTimeout sets the timeout for connection to be established.
 // MUST BE positive. If not called, 5s timeout will be used by default.
 //
-// Deprecated: Use PrmDial.DialTimeout instead.
-func (x *PrmDial) SetTimeout(timeout time.Duration) {
+// Deprecated: Use PrmDialOptions.DialTimeout instead.
+func (x *PrmDialOptions) SetTimeout(timeout time.Duration) {
 	x.DialTimeout = timeout
 }
 
 // SetStreamTimeout sets the timeout for individual operations in streaming RPC.
 // MUST BE positive. If not called, 10s timeout will be used by default.
 //
-// Deprecated: Use PrmDial.StreamTimeout instead.
-func (x *PrmDial) SetStreamTimeout(timeout time.Duration) {
+// Deprecated: Use PrmDialOptions.StreamTimeout instead.
+func (x *PrmDialOptions) SetStreamTimeout(timeout time.Duration) {
 	x.StreamTimeout = timeout
 }
 
 // SetGRPCDialOptions sets the gRPC dial options for new gRPC client connection.
 //
-// Deprecated: Use PrmDial.GRPCDialOptions instead.
-func (x *PrmDial) SetGRPCDialOptions(opts ...grpc.DialOption) {
+// Deprecated: Use PrmDialOptions.GRPCDialOptions instead.
+func (x *PrmDialOptions) SetGRPCDialOptions(opts ...grpc.DialOption) {
 	x.GRPCDialOptions = opts
 }

client/client_test.go

@@ -81,13 +81,13 @@ func TestClient_NetMapDialContext(t *testing.T) {
 	netMap.SetNodes([]netmap.NodeInfo{node})
 
 	prmInit.NetMap = netMap
-
 	c.Init(prmInit)
 
+	prmNetMapDial := PrmNetMapDial{}
+
 	assert := func(ctx context.Context, errExpected error) {
 		// expect particular context error according to Dial docs
-		//require.ErrorIs(t, c.Dial(ctx, prm), errExpected)
-		require.ErrorIs(t, c.NetMapDial(ctx, fmt.Sprintf("frostfs://%s", publicKey)), errExpected)
+		require.ErrorIs(t, c.NetMapDial(ctx, fmt.Sprintf("frostfs://%s", publicKey), prmNetMapDial), errExpected)
 	}
 
 	// create pre-abandoned context

pool/pool.go

@@ -343,9 +343,11 @@ func (c *clientWrapper) dial(ctx context.Context) error {
 
 	prmDial := sdkClient.PrmDial{
 		Endpoint: c.prm.address,
+		PrmDialOptions: sdkClient.PrmDialOptions{
 			DialTimeout:     c.prm.dialTimeout,
 			StreamTimeout:   c.prm.streamTimeout,
 			GRPCDialOptions: c.prm.dialOptions,
+		},
 	}
 
 	if err = cl.Dial(ctx, prmDial); err != nil {
@@ -382,9 +384,11 @@ func (c *clientWrapper) restartIfUnhealthy(ctx context.Context) (healthy, change
 
 	prmDial := sdkClient.PrmDial{
 		Endpoint: c.prm.address,
+		PrmDialOptions: sdkClient.PrmDialOptions{
 			DialTimeout:     c.prm.dialTimeout,
 			StreamTimeout:   c.prm.streamTimeout,
 			GRPCDialOptions: c.prm.dialOptions,
+		},
 	}
 
 	if err := cl.Dial(ctx, prmDial); err != nil {