[#185] Implement rpc/client for tree service

Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>

api/rpc/tree.go

@@ -0,0 +1,173 @@
+package rpc
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/tree"
+)
+
+const serviceTree = "tree.TreeService"
+
+const (
+	rpcTreeAdd           = "Add"
+	rpcTreeAddByPath     = "AddByPath"
+	rpcTreeRemove        = "Remove"
+	rpcTreeMove          = "Move"
+	rpcTreeGetNodeByPath = "GetNodeByPath"
+	rpcTreeGetSubTree    = "GetSubTree"
+	rpcTreeList          = "TreeList"
+	rpcTreeApply         = "Apply"
+	rpcTreeGetOpLog      = "GetOpLog"
+	rpcTreeHealthcheck   = "Healthcheck"
+)
+
+func Add(
+	cli *client.Client,
+	req *tree.AddRequest,
+	opts ...client.CallOption,
+) (*tree.AddResponse, error) {
+	resp := new(tree.AddResponse)
+	err := client.SendUnary(cli, common.CallMethodInfoUnary(serviceTree, rpcTreeAdd), req, resp, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func AddByPath(
+	cli *client.Client,
+	req *tree.AddByPathRequest,
+	opts ...client.CallOption,
+) (*tree.AddByPathResponse, error) {
+	resp := new(tree.AddByPathResponse)
+	err := client.SendUnary(cli, common.CallMethodInfoUnary(serviceTree, rpcTreeAddByPath), req, resp, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func Remove(cli *client.Client,
+	req *tree.RemoveRequest,
+	opts ...client.CallOption,
+) (*tree.RemoveResponse, error) {
+	resp := new(tree.RemoveResponse)
+	err := client.SendUnary(cli, common.CallMethodInfoUnary(serviceTree, rpcTreeRemove), req, resp, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func Move(cli *client.Client,
+	req *tree.MoveRequest,
+	opts ...client.CallOption,
+) (*tree.MoveResponse, error) {
+	resp := new(tree.MoveResponse)
+	err := client.SendUnary(cli, common.CallMethodInfoUnary(serviceTree, rpcTreeMove), req, resp, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func GetNodeByPath(cli *client.Client,
+	req *tree.GetNodeByPathRequest,
+	opts ...client.CallOption,
+) (*tree.GetNodeByPathResponse, error) {
+	resp := new(tree.GetNodeByPathResponse)
+	err := client.SendUnary(cli, common.CallMethodInfoUnary(serviceTree, rpcTreeGetNodeByPath), req, resp, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+type GetSubTreeResponseReader struct {
+	r client.MessageReader
+}
+
+// Read reads response from the stream.
+//
+// Returns io.EOF of streaming is finished.
+func (r *GetSubTreeResponseReader) Read(resp *tree.GetSubTreeResponse) error {
+	return r.r.ReadMessage(resp)
+}
+
+func GetSubTree(cli *client.Client,
+	req *tree.GetSubTreeRequest,
+	opts ...client.CallOption) (*GetSubTreeResponseReader, error) {
+	wc, err := client.OpenServerStream(cli, common.CallMethodInfoServerStream(serviceTree, rpcTreeGetSubTree), req, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return &GetSubTreeResponseReader{
+		r: wc,
+	}, nil
+}
+
+func TreeList(cli *client.Client,
+	req *tree.ListRequest,
+	opts ...client.CallOption) (*tree.ListResponse, error) {
+	resp := new(tree.ListResponse)
+	err := client.SendUnary(cli, common.CallMethodInfoUnary(serviceTree, rpcTreeList), req, resp, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func Apply(cli *client.Client,
+	req *tree.ApplyRequest,
+	opts ...client.CallOption) (*tree.ApplyResponse, error) {
+	resp := new(tree.ApplyResponse)
+	err := client.SendUnary(cli, common.CallMethodInfoUnary(serviceTree, rpcTreeApply), req, resp, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+type TreeServiceGetOpLogResponseReader struct {
+	r client.MessageReader
+}
+
+// Read reads response from the stream.
+//
+// Returns io.EOF of streaming is finished.
+func (r *TreeServiceGetOpLogResponseReader) Read(resp *tree.GetOpLogResponse) error {
+	return r.r.ReadMessage(resp)
+}
+
+func GetOpLog(cli *client.Client,
+	req *tree.GetOpLogRequest,
+	opts ...client.CallOption) (*TreeServiceGetOpLogResponseReader, error) {
+	wc, err := client.OpenServerStream(cli, common.CallMethodInfoServerStream(serviceTree, rpcTreeGetOpLog), req, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return &TreeServiceGetOpLogResponseReader{
+		r: wc,
+	}, nil
+}
+
+func Healthcheck(cli *client.Client,
+	req *tree.HealthcheckRequest,
+	opts ...client.CallOption) (*tree.HealthcheckResponse, error) {
+	resp := new(tree.HealthcheckResponse)
+	err := client.SendUnary(cli, common.CallMethodInfoUnary(serviceTree, rpcTreeHealthcheck), req, resp, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}

api/tree/types.go

@@ -0,0 +1,393 @@
+package tree
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session"
+	tree "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree/service"
+)
+
+type AddRequest struct {
+	Body      *AddRequestBody
+	signature *Signature
+}
+
+func (r *AddRequest) SignedDataSize() int {
+	return r.Body.ToGRPCMessage().(*tree.AddRequest_Body).StableSize()
+}
+
+func (r *AddRequest) ReadSignedData(buf []byte) ([]byte, error) {
+	return r.Body.ToGRPCMessage().(*tree.AddRequest_Body).StableMarshal(buf), nil
+}
+
+func (r *AddRequest) GetSignature() *tree.Signature {
+	return r.signature.ToGRPCMessage().(*tree.Signature)
+}
+
+func (r *AddRequest) SetSignature(signature *tree.Signature) error {
+	if r.signature == nil {
+		r.signature = new(Signature)
+	}
+
+	return r.signature.FromGRPCMessage(signature)
+}
+
+type AddRequestBody struct {
+	ContainerID []byte
+	BearerToken []byte
+	TreeID      string
+	ParentID    uint64
+	Meta        []*KeyValue
+}
+
+type AddResponse struct {
+	Body      *AddResponseBody
+	signature *Signature
+}
+
+type AddResponseBody struct {
+	NodeID uint64
+}
+
+type AddByPathRequest struct {
+	Body      *AddByPathRequestBody
+	signature *Signature
+}
+
+func (r *AddByPathRequest) SignedDataSize() int {
+	return r.Body.ToGRPCMessage().(*tree.AddByPathRequest_Body).StableSize()
+}
+
+func (r *AddByPathRequest) ReadSignedData(bytes []byte) ([]byte, error) {
+	return r.Body.ToGRPCMessage().(*tree.AddByPathRequest_Body).StableMarshal(bytes), nil
+}
+
+func (r *AddByPathRequest) GetSignature() *tree.Signature {
+	return r.signature.ToGRPCMessage().(*tree.Signature)
+}
+
+func (r *AddByPathRequest) SetSignature(signature *tree.Signature) error {
+	if r.signature == nil {
+		r.signature = new(Signature)
+	}
+
+	return r.signature.FromGRPCMessage(signature)
+}
+
+type AddByPathRequestBody struct {
+	ContainerID   []byte
+	TreeID        string
+	PathAttribute string
+	Path          []string
+	Meta          []*KeyValue
+	BearerToken   []byte
+}
+
+type AddByPathResponse struct {
+	Body      *AddByPathResponseBody
+	signature *Signature
+}
+
+type AddByPathResponseBody struct {
+	Nodes    []uint64
+	ParentID uint64
+}
+
+type RemoveRequest struct {
+	Body      *RemoveRequestBody
+	signature *Signature
+}
+
+func (r *RemoveRequest) SignedDataSize() int {
+	return r.Body.ToGRPCMessage().(*tree.RemoveRequest_Body).StableSize()
+}
+
+func (r *RemoveRequest) ReadSignedData(bytes []byte) ([]byte, error) {
+	return r.Body.ToGRPCMessage().(*tree.RemoveRequest_Body).StableMarshal(bytes), nil
+}
+
+func (r *RemoveRequest) GetSignature() *tree.Signature {
+	return r.signature.ToGRPCMessage().(*tree.Signature)
+}
+
+func (r *RemoveRequest) SetSignature(signature *tree.Signature) error {
+	if r.signature == nil {
+		r.signature = new(Signature)
+	}
+
+	return r.signature.FromGRPCMessage(signature)
+}
+
+type RemoveRequestBody struct {
+	ContainerID []byte
+	TreeID      string
+	NodeID      uint64
+	BearerToken []byte
+}
+
+type RemoveResponse struct {
+	Body      *RemoveResponseBody
+	signature *Signature
+}
+
+type RemoveResponseBody struct {
+}
+
+type MoveRequest struct {
+	Body      *MoveRequestBody
+	signature *Signature
+}
+
+func (r *MoveRequest) SignedDataSize() int {
+	return r.Body.ToGRPCMessage().(*tree.MoveRequest_Body).StableSize()
+}
+
+func (r *MoveRequest) ReadSignedData(buf []byte) ([]byte, error) {
+	return r.Body.ToGRPCMessage().(*tree.MoveRequest_Body).StableMarshal(buf), nil
+}
+
+func (r *MoveRequest) GetSignature() *tree.Signature {
+	return r.signature.ToGRPCMessage().(*tree.Signature)
+}
+
+func (r *MoveRequest) SetSignature(signature *tree.Signature) error {
+	if r.signature == nil {
+		r.signature = new(Signature)
+	}
+
+	return r.signature.FromGRPCMessage(signature)
+}
+
+type MoveRequestBody struct {
+	ContainerID []byte
+	TreeID      string
+	ParentID    uint64
+	NodeID      uint64
+	Meta        []*KeyValue
+	BearerToken []byte
+}
+
+type MoveResponse struct {
+	Body      *MoveResponseBody
+	signature *Signature
+}
+
+type MoveResponseBody struct {
+}
+
+type GetNodeByPathRequest struct {
+	Body      *GetNodeByPathRequestBody
+	signature *Signature
+}
+
+func (r *GetNodeByPathRequest) SignedDataSize() int {
+	return r.Body.ToGRPCMessage().(*tree.GetNodeByPathRequest_Body).StableSize()
+}
+
+func (r *GetNodeByPathRequest) ReadSignedData(buf []byte) ([]byte, error) {
+	return r.Body.ToGRPCMessage().(*tree.GetNodeByPathRequest_Body).StableMarshal(buf), nil
+}
+
+func (r *GetNodeByPathRequest) GetSignature() *tree.Signature {
+	return r.signature.ToGRPCMessage().(*tree.Signature)
+}
+
+func (r *GetNodeByPathRequest) SetSignature(signature *tree.Signature) error {
+	if r.signature == nil {
+		r.signature = new(Signature)
+	}
+	return r.signature.FromGRPCMessage(signature)
+}
+
+type GetNodeByPathRequestBody struct {
+	ContainerID   []byte
+	TreeID        string
+	PathAttribute string
+	Path          []string
+	Attributes    []string
+	LatestOnly    bool
+	AllAttributes bool
+	BearerToken   []byte
+}
+
+type GetNodeByPathResponse struct {
+	Body      *GetNodeByPathResponseBody
+	signature *Signature
+}
+
+type GetNodeByPathResponseBody struct {
+	Nodes []GetNodeByPathResponseInfo
+}
+
+type GetNodeByPathResponseInfo struct {
+	NodeID    uint64
+	Timestamp uint64
+	Meta      []*KeyValue
+	ParentID  uint64
+}
+
+type ListRequest struct {
+	Body      *ListRequestBody
+	signature *Signature
+}
+
+type ListRequestBody struct {
+	ContainerID []byte
+}
+
+type ListResponse struct {
+	Body      *ListResponseBody
+	signature *Signature
+}
+
+type ListResponseBody struct {
+	IDs []string
+}
+
+type GetSubTreeRequest struct {
+	Body *GetSubTreeRequestBody
+
+	signature *Signature
+}
+
+func (r *GetSubTreeRequest) SignedDataSize() int {
+	return r.Body.ToGRPCMessage().(*tree.GetSubTreeRequest_Body).StableSize()
+}
+
+func (r *GetSubTreeRequest) ReadSignedData(buf []byte) ([]byte, error) {
+	return r.Body.ToGRPCMessage().(*tree.GetSubTreeRequest_Body).StableMarshal(buf), nil
+}
+
+func (r *GetSubTreeRequest) GetSignature() *tree.Signature {
+	return r.signature.ToGRPCMessage().(*tree.Signature)
+}
+
+func (r *GetSubTreeRequest) SetSignature(signature *tree.Signature) error {
+	if r.signature == nil {
+		r.signature = new(Signature)
+	}
+
+	return r.signature.FromGRPCMessage(signature)
+}
+
+type GetSubTreeRequestBody struct {
+	ContainerID []byte
+	TreeID      string
+	RootID      []uint64
+	Depth       uint32
+	BearerToken []byte
+	OrderBy     *GetSubTreeRequestBodyOrder
+}
+
+type GetSubTreeRequestBodyOrder struct {
+	Direction GetSubTreeRequestBodyOrderDirection
+}
+
+const (
+	GetSubTreeRequestBodyOrderNone = GetSubTreeRequestBodyOrderDirection(tree.GetSubTreeRequest_Body_Order_None)
+	GetSubTreeRequestBodyOrderAsc  = GetSubTreeRequestBodyOrderDirection(tree.GetSubTreeRequest_Body_Order_Asc)
+)
+
+type GetSubTreeRequestBodyOrderDirection int32
+
+type GetSubTreeResponse struct {
+	Body      *GetSubTreeResponseBody
+	signature *Signature
+}
+
+type GetSubTreeResponseBody struct {
+	NodeID    []uint64
+	ParentID  []uint64
+	Timestamp []uint64
+	Meta      []*KeyValue
+}
+
+type ApplyRequest struct {
+	Body      *ApplyRequestBody
+	signature *Signature
+}
+
+type ApplyRequestBody struct {
+	ContainerID []byte
+	TreeID      string
+	Operation   *LogMove
+}
+
+type ApplyResponse struct {
+	Body      *ApplyResponseBody
+	signature *Signature
+}
+
+type ApplyResponseBody struct {
+}
+
+type GetOpLogRequest struct {
+	Body      *GetOpLogRequestBody
+	signature *Signature
+}
+
+type GetOpLogRequestBody struct {
+	ContainerID []byte
+	TreeID      string
+	Height      uint64
+	Count       uint64
+}
+
+type GetOpLogResponse struct {
+	Body      *GetOpLogResponseBody
+	signature *Signature
+}
+
+type GetOpLogResponseBody struct {
+	Operation *LogMove
+}
+
+type HealthcheckRequest struct {
+	body      *HealthcheckRequestBody
+	signature *Signature
+
+	session.RequestHeaders
+}
+
+func (r *HealthcheckRequest) GetBody() *HealthcheckRequestBody {
+	if r != nil {
+		return r.body
+	}
+
+	return new(HealthcheckRequestBody)
+}
+
+func (r *HealthcheckRequest) SetBody(v *HealthcheckRequestBody) {
+	r.body = v
+}
+
+type HealthcheckRequestBody struct{}
+
+type HealthcheckResponse struct {
+	Body      *HealthcheckResponseBody
+	signature *Signature
+}
+
+type HealthcheckResponseBody struct{}
+
+type LogMove struct {
+	ParentID uint64
+	Meta     []byte
+	ChildID  uint64
+}
+
+type Signature struct {
+	Key  []byte
+	Sign []byte
+}
+
+type KeyValue struct {
+	Key   string
+	Value []byte
+}
+
+func (k *KeyValue) GetKey() string {
+	return k.Key
+}
+
+func (k *KeyValue) GetValue() []byte {
+	return k.Value
+}

pool/tree/client.go

@@ -5,10 +5,13 @@ import (
 	"crypto/tls"
 	"errors"
 	"fmt"
+	"io"
 	"sync"
+	"time"
 
-	apiClient "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/client"
+	rpcapi "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc"
-	grpcService "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree/service"
+	rpcclient "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/tree"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/credentials/insecure"
@@ -18,8 +21,11 @@ type treeClient struct {
 	mu              sync.RWMutex
 	address         string
 	opts            []grpc.DialOption
-	conn    *grpc.ClientConn
+	conn            io.Closer
-	service grpcService.TreeServiceClient
+	client          *rpcclient.Client
+	nodeDialTimeout time.Duration
+	streamTimeout   time.Duration
+
 	healthy bool
 }
 
@@ -27,10 +33,12 @@ type treeClient struct {
 var ErrUnhealthyEndpoint = errors.New("unhealthy endpoint")
 
 // newTreeClient creates new tree client with auto dial.
-func newTreeClient(addr string, opts ...grpc.DialOption) *treeClient {
+func newTreeClient(addr string, opts []grpc.DialOption, dialTimeout time.Duration, streamTimeout time.Duration) *treeClient {
 	return &treeClient{
 		address:         addr,
 		opts:            opts,
+		nodeDialTimeout: dialTimeout,
+		streamTimeout:   streamTimeout,
 	}
 }
 
@@ -43,14 +51,16 @@ func (c *treeClient) dial(ctx context.Context) error {
 	}
 
 	var err error
-	if c.conn, c.service, err = createClient(c.address, c.opts...); err != nil {
+	c.client, err = c.createClient()
+	if err != nil {
 		return err
 	}
 
-	if _, err = c.service.Healthcheck(ctx, &grpcService.HealthcheckRequest{}); err != nil {
+	if _, err = rpcapi.Healthcheck(c.client, &tree.HealthcheckRequest{}, rpcclient.WithContext(ctx)); err != nil {
 		return fmt.Errorf("healthcheck tree service: %w", err)
 	}
 
+	c.conn = c.client.Conn()
 	c.healthy = true
 
 	return nil
@@ -61,13 +71,13 @@ func (c *treeClient) redialIfNecessary(ctx context.Context) (healthHasChanged bo
 	defer c.mu.Unlock()
 
 	if c.conn == nil {
-		if c.conn, c.service, err = createClient(c.address, c.opts...); err != nil {
+		if c.client, err = c.createClient(); err != nil {
 			return false, err
 		}
 	}
 
 	wasHealthy := c.healthy
-	if _, err = c.service.Healthcheck(ctx, &grpcService.HealthcheckRequest{}); err != nil {
+	if _, err = rpcapi.Healthcheck(c.client, &tree.HealthcheckRequest{}, rpcclient.WithContext(ctx)); err != nil {
 		c.healthy = false
 		return wasHealthy, fmt.Errorf("healthcheck tree service: %w", err)
 	}
@@ -77,10 +87,10 @@ func (c *treeClient) redialIfNecessary(ctx context.Context) (healthHasChanged bo
 	return !wasHealthy, nil
 }
 
-func createClient(addr string, clientOptions ...grpc.DialOption) (*grpc.ClientConn, grpcService.TreeServiceClient, error) {
+func (c *treeClient) createClient() (*rpcclient.Client, error) {
-	host, tlsEnable, err := apiClient.ParseURI(addr)
+	_, tlsEnable, err := rpcclient.ParseURI(c.address)
 	if err != nil {
-		return nil, nil, fmt.Errorf("parse address: %w", err)
+		return nil, fmt.Errorf("parse address: %w", err)
 	}
 
 	creds := insecure.NewCredentials()
@@ -91,17 +101,19 @@ func createClient(addr string, clientOptions ...grpc.DialOption) (*grpc.ClientCo
 	options := []grpc.DialOption{grpc.WithTransportCredentials(creds)}
 
 	// the order is matter, we want client to be able to overwrite options.
-	opts := append(options, clientOptions...)
+	opts := append(options, c.opts...)
 
-	conn, err := grpc.NewClient(host, opts...)
+	cli := rpcclient.New(append(
-	if err != nil {
+		rpcclient.WithNetworkURIAddress(c.address, &tls.Config{}),
-		return nil, nil, fmt.Errorf("grpc create node tree service: %w", err)
+		rpcclient.WithDialTimeout(c.nodeDialTimeout),
+		rpcclient.WithRWTimeout(c.streamTimeout),
+		rpcclient.WithGRPCDialOptions(opts),
+	)...)
+
+	return cli, nil
 }
 
-	return conn, grpcService.NewTreeServiceClient(conn), nil
+func (c *treeClient) serviceClient() (*rpcclient.Client, error) {
-}
-
-func (c *treeClient) serviceClient() (grpcService.TreeServiceClient, error) {
 	c.mu.RLock()
 	defer c.mu.RUnlock()
 
@@ -109,7 +121,7 @@ func (c *treeClient) serviceClient() (grpcService.TreeServiceClient, error) {
 		return nil, fmt.Errorf("%w: '%s'", ErrUnhealthyEndpoint, c.address)
 	}
 
-	return c.service, nil
+	return c.client, nil
 }
 
 func (c *treeClient) endpoint() string {
@@ -136,5 +148,11 @@ func (c *treeClient) close() error {
 		return nil
 	}
 
-	return c.conn.Close()
+	err := c.conn.Close()
+	if err != nil {
+		return err
+	}
+	c.conn = nil
+
+	return nil
 }

pool/tree/pool.go

@@ -10,9 +10,11 @@ import (
 	"sync"
 	"time"
 
+	rpcapi "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc"
+	rpcclient "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/tree"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
-	grpcService "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree/service"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
@@ -51,7 +53,7 @@ var (
 // This interface is expected to have exactly one production implementation - treeClient.
 // Others are expected to be for test purposes only.
 type client interface {
-	serviceClient() (grpcService.TreeServiceClient, error)
+	serviceClient() (*rpcclient.Client, error)
 	endpoint() string
 	isHealthy() bool
 	setHealthy(bool)
@@ -92,6 +94,7 @@ type Pool struct {
 
 	maxRequestAttempts int
 	streamTimeout      time.Duration
+	nodeDialTimeout    time.Duration
 
 	startIndicesMtx sync.RWMutex
 	// startIndices points to the client from which the next request will be executed.
@@ -254,7 +257,7 @@ func (p *Pool) Dial(ctx context.Context) error {
 	for i, nodes := range p.rebalanceParams.nodesGroup {
 		clients := make([]client, len(nodes))
 		for j, node := range nodes {
-			clients[j] = newTreeClient(node.Address(), p.dialOptions...)
+			clients[j] = newTreeClient(node.Address(), p.dialOptions, p.nodeDialTimeout, p.streamTimeout)
 			if err := clients[j].dial(ctx); err != nil {
 				p.log(zap.WarnLevel, "failed to dial tree client", zap.String("address", node.Address()), zap.Error(err))
 				continue
@@ -336,11 +339,11 @@ func (x *InitParameters) SetMaxRequestAttempts(maxAttempts int) {
 // Can return predefined errors:
 // * ErrNodeNotFound
 // * ErrNodeAccessDenied.
-func (p *Pool) GetNodes(ctx context.Context, prm GetNodesParams) ([]*grpcService.GetNodeByPathResponse_Info, error) {
+func (p *Pool) GetNodes(ctx context.Context, prm GetNodesParams) ([]tree.GetNodeByPathResponseInfo, error) {
-	request := &grpcService.GetNodeByPathRequest{
+	request := &tree.GetNodeByPathRequest{
-		Body: &grpcService.GetNodeByPathRequest_Body{
+		Body: &tree.GetNodeByPathRequestBody{
-			ContainerId:   prm.CID[:],
+			ContainerID:   prm.CID[:],
-			TreeId:        prm.TreeID,
+			TreeID:        prm.TreeID,
 			Path:          prm.Path,
 			Attributes:    prm.Meta,
 			PathAttribute: prm.PathAttribute,
@@ -355,16 +358,14 @@ func (p *Pool) GetNodes(ctx context.Context, prm GetNodesParams) ([]*grpcService
 		return nil, err
 	}
 
-	var resp *grpcService.GetNodeByPathResponse
+	var resp *tree.GetNodeByPathResponse
-	err := p.requestWithRetry(ctx, func(client grpcService.TreeServiceClient) (inErr error) {
+	err := p.requestWithRetry(ctx, func(client *rpcclient.Client) (inErr error) {
-		reqCtx, cancel := context.WithTimeout(ctx, p.streamTimeout)
+		resp, inErr = rpcapi.GetNodeByPath(client, request, rpcclient.WithContext(ctx))
-		defer cancel()
-		resp, inErr = client.GetNodeByPath(reqCtx, request)
 		// Pool wants to do retry 'GetNodeByPath' request if result is empty.
 		// Empty result is expected due to delayed tree service sync.
 		// Return an error there to trigger retry and ignore it after,
 		// to keep compatibility with 'GetNodeByPath' implementation.
-		if inErr == nil && len(resp.GetBody().GetNodes()) == 0 {
+		if inErr == nil && len(resp.Body.Nodes) == 0 {
 			return errNodeEmptyResult
 		}
 		return handleError("failed to get node by path", inErr)
@@ -374,50 +375,53 @@ func (p *Pool) GetNodes(ctx context.Context, prm GetNodesParams) ([]*grpcService
 		return nil, err
 	}
 
-	return resp.GetBody().GetNodes(), nil
+	return resp.Body.Nodes, nil
 }
 
 // SubTreeReader is designed to read list of subtree nodes FrostFS tree service.
 //
 // Must be initialized using Pool.GetSubTree, any other usage is unsafe.
 type SubTreeReader struct {
-	cli grpcService.TreeService_GetSubTreeClient
+	cli *rpcapi.GetSubTreeResponseReader
 }
 
 // Read reads another list of the subtree nodes.
-func (x *SubTreeReader) Read(buf []*grpcService.GetSubTreeResponse_Body) (int, error) {
+func (x *SubTreeReader) Read(buf []*tree.GetSubTreeResponseBody) (int, error) {
 	for i := range buf {
-		resp, err := x.cli.Recv()
+		var resp tree.GetSubTreeResponse
+		err := x.cli.Read(&resp)
 		if err == io.EOF {
 			return i, io.EOF
 		} else if err != nil {
 			return i, handleError("failed to get sub tree", err)
 		}
-		buf[i] = resp.GetBody()
+		buf[i] = resp.Body
 	}
 
 	return len(buf), nil
 }
 
 // ReadAll reads all nodes subtree nodes.
-func (x *SubTreeReader) ReadAll() ([]*grpcService.GetSubTreeResponse_Body, error) {
+func (x *SubTreeReader) ReadAll() ([]*tree.GetSubTreeResponseBody, error) {
-	var res []*grpcService.GetSubTreeResponse_Body
+	var res []*tree.GetSubTreeResponseBody
 	for {
-		resp, err := x.cli.Recv()
+		var resp tree.GetSubTreeResponse
+		err := x.cli.Read(&resp)
 		if err == io.EOF {
 			break
 		} else if err != nil {
 			return nil, handleError("failed to get sub tree", err)
 		}
-		res = append(res, resp.GetBody())
+		res = append(res, resp.Body)
 	}
 
 	return res, nil
 }
 
 // Next gets the next node from subtree.
-func (x *SubTreeReader) Next() (*grpcService.GetSubTreeResponse_Body, error) {
+func (x *SubTreeReader) Next() (*tree.GetSubTreeResponseBody, error) {
-	resp, err := x.cli.Recv()
+	var resp tree.GetSubTreeResponse
+	err := x.cli.Read(&resp)
 	if err == io.EOF {
 		return nil, io.EOF
 	}
@@ -425,7 +429,7 @@ func (x *SubTreeReader) Next() (*grpcService.GetSubTreeResponse_Body, error) {
 		return nil, handleError("failed to get sub tree", err)
 	}
 
-	return resp.GetBody(), nil
+	return resp.Body, nil
 }
 
 // GetSubTree invokes eponymous method from TreeServiceClient.
@@ -434,22 +438,22 @@ func (x *SubTreeReader) Next() (*grpcService.GetSubTreeResponse_Body, error) {
 // * ErrNodeNotFound
 // * ErrNodeAccessDenied.
 func (p *Pool) GetSubTree(ctx context.Context, prm GetSubTreeParams) (*SubTreeReader, error) {
-	request := &grpcService.GetSubTreeRequest{
+	request := &tree.GetSubTreeRequest{
-		Body: &grpcService.GetSubTreeRequest_Body{
+		Body: &tree.GetSubTreeRequestBody{
-			ContainerId: prm.CID[:],
+			ContainerID: prm.CID[:],
-			TreeId:      prm.TreeID,
+			TreeID:      prm.TreeID,
-			RootId:      prm.RootID,
+			RootID:      prm.RootID,
 			Depth:       prm.Depth,
 			BearerToken: prm.BearerToken,
-			OrderBy:     new(grpcService.GetSubTreeRequest_Body_Order),
+			OrderBy:     new(tree.GetSubTreeRequestBodyOrder),
 		},
 	}
 
 	switch prm.Order {
 	case AscendingOrder:
-		request.Body.OrderBy.Direction = grpcService.GetSubTreeRequest_Body_Order_Asc
+		request.Body.OrderBy.Direction = tree.GetSubTreeRequestBodyOrderAsc
 	default:
-		request.Body.OrderBy.Direction = grpcService.GetSubTreeRequest_Body_Order_None
+		request.Body.OrderBy.Direction = tree.GetSubTreeRequestBodyOrderNone
 	}
 
 	start := time.Now()
@@ -457,9 +461,9 @@ func (p *Pool) GetSubTree(ctx context.Context, prm GetSubTreeParams) (*SubTreeRe
 		return nil, err
 	}
 
-	var cli grpcService.TreeService_GetSubTreeClient
+	var cli *rpcapi.GetSubTreeResponseReader
-	err := p.requestWithRetry(ctx, func(client grpcService.TreeServiceClient) (inErr error) {
+	err := p.requestWithRetry(ctx, func(client *rpcclient.Client) (inErr error) {
-		cli, inErr = client.GetSubTree(ctx, request)
+		cli, inErr = rpcapi.GetSubTree(client, request, rpcclient.WithContext(ctx))
 		return handleError("failed to get sub tree client", inErr)
 	})
 	p.methods[methodGetSubTree].IncRequests(time.Since(start))
@@ -476,11 +480,11 @@ func (p *Pool) GetSubTree(ctx context.Context, prm GetSubTreeParams) (*SubTreeRe
 // * ErrNodeNotFound
 // * ErrNodeAccessDenied.
 func (p *Pool) AddNode(ctx context.Context, prm AddNodeParams) (uint64, error) {
-	request := &grpcService.AddRequest{
+	request := &tree.AddRequest{
-		Body: &grpcService.AddRequest_Body{
+		Body: &tree.AddRequestBody{
-			ContainerId: prm.CID[:],
+			ContainerID: prm.CID[:],
-			TreeId:      prm.TreeID,
+			TreeID:      prm.TreeID,
-			ParentId:    prm.Parent,
+			ParentID:    prm.Parent,
 			Meta:        metaToKV(prm.Meta),
 			BearerToken: prm.BearerToken,
 		},
@@ -491,11 +495,9 @@ func (p *Pool) AddNode(ctx context.Context, prm AddNodeParams) (uint64, error) {
 		return 0, err
 	}
 
-	var resp *grpcService.AddResponse
+	var resp *tree.AddResponse
-	err := p.requestWithRetry(ctx, func(client grpcService.TreeServiceClient) (inErr error) {
+	err := p.requestWithRetry(ctx, func(client *rpcclient.Client) (inErr error) {
-		reqCtx, cancel := context.WithTimeout(ctx, p.streamTimeout)
+		resp, inErr = rpcapi.Add(client, request, rpcclient.WithContext(ctx))
-		defer cancel()
-		resp, inErr = client.Add(reqCtx, request)
 		return handleError("failed to add node", inErr)
 	})
 	p.methods[methodAddNode].IncRequests(time.Since(start))
@@ -503,7 +505,7 @@ func (p *Pool) AddNode(ctx context.Context, prm AddNodeParams) (uint64, error) {
 		return 0, err
 	}
 
-	return resp.GetBody().GetNodeId(), nil
+	return resp.Body.NodeID, nil
 }
 
 // AddNodeByPath invokes eponymous method from TreeServiceClient.
@@ -512,10 +514,10 @@ func (p *Pool) AddNode(ctx context.Context, prm AddNodeParams) (uint64, error) {
 // * ErrNodeNotFound
 // * ErrNodeAccessDenied.
 func (p *Pool) AddNodeByPath(ctx context.Context, prm AddNodeByPathParams) (uint64, error) {
-	request := &grpcService.AddByPathRequest{
+	request := &tree.AddByPathRequest{
-		Body: &grpcService.AddByPathRequest_Body{
+		Body: &tree.AddByPathRequestBody{
-			ContainerId:   prm.CID[:],
+			ContainerID:   prm.CID[:],
-			TreeId:        prm.TreeID,
+			TreeID:        prm.TreeID,
 			Path:          prm.Path,
 			Meta:          metaToKV(prm.Meta),
 			PathAttribute: prm.PathAttribute,
@@ -528,11 +530,9 @@ func (p *Pool) AddNodeByPath(ctx context.Context, prm AddNodeByPathParams) (uint
 		return 0, err
 	}
 
-	var resp *grpcService.AddByPathResponse
+	var resp *tree.AddByPathResponse
-	err := p.requestWithRetry(ctx, func(client grpcService.TreeServiceClient) (inErr error) {
+	err := p.requestWithRetry(ctx, func(client *rpcclient.Client) (inErr error) {
-		reqCtx, cancel := context.WithTimeout(ctx, p.streamTimeout)
+		resp, inErr = rpcapi.AddByPath(client, request, rpcclient.WithContext(ctx))
-		defer cancel()
-		resp, inErr = client.AddByPath(reqCtx, request)
 		return handleError("failed to add node by path", inErr)
 	})
 	p.methods[methodAddNodeByPath].IncRequests(time.Since(start))
@@ -540,15 +540,15 @@ func (p *Pool) AddNodeByPath(ctx context.Context, prm AddNodeByPathParams) (uint
 		return 0, err
 	}
 
-	body := resp.GetBody()
+	body := resp.Body
 	if body == nil {
 		return 0, errors.New("nil body in tree service response")
-	} else if len(body.GetNodes()) == 0 {
+	} else if len(body.Nodes) == 0 {
 		return 0, errors.New("empty list of added nodes in tree service response")
 	}
 
 	// The first node is the leaf that we add, according to tree service docs.
-	return body.GetNodes()[0], nil
+	return body.Nodes[0], nil
 }
 
 // MoveNode invokes eponymous method from TreeServiceClient.
@@ -557,12 +557,12 @@ func (p *Pool) AddNodeByPath(ctx context.Context, prm AddNodeByPathParams) (uint
 // * ErrNodeNotFound
 // * ErrNodeAccessDenied.
 func (p *Pool) MoveNode(ctx context.Context, prm MoveNodeParams) error {
-	request := &grpcService.MoveRequest{
+	request := &tree.MoveRequest{
-		Body: &grpcService.MoveRequest_Body{
+		Body: &tree.MoveRequestBody{
-			ContainerId: prm.CID[:],
+			ContainerID: prm.CID[:],
-			TreeId:      prm.TreeID,
+			TreeID:      prm.TreeID,
-			NodeId:      prm.NodeID,
+			NodeID:      prm.NodeID,
-			ParentId:    prm.ParentID,
+			ParentID:    prm.ParentID,
 			Meta:        metaToKV(prm.Meta),
 			BearerToken: prm.BearerToken,
 		},
@@ -573,10 +573,8 @@ func (p *Pool) MoveNode(ctx context.Context, prm MoveNodeParams) error {
 		return err
 	}
 
-	err := p.requestWithRetry(ctx, func(client grpcService.TreeServiceClient) error {
+	err := p.requestWithRetry(ctx, func(client *rpcclient.Client) error {
-		reqCtx, cancel := context.WithTimeout(ctx, p.streamTimeout)
+		if _, err := rpcapi.Move(client, request, rpcclient.WithContext(ctx)); err != nil {
-		defer cancel()
-		if _, err := client.Move(reqCtx, request); err != nil {
 			return handleError("failed to move node", err)
 		}
 		return nil
@@ -592,11 +590,11 @@ func (p *Pool) MoveNode(ctx context.Context, prm MoveNodeParams) error {
 // * ErrNodeNotFound
 // * ErrNodeAccessDenied.
 func (p *Pool) RemoveNode(ctx context.Context, prm RemoveNodeParams) error {
-	request := &grpcService.RemoveRequest{
+	request := &tree.RemoveRequest{
-		Body: &grpcService.RemoveRequest_Body{
+		Body: &tree.RemoveRequestBody{
-			ContainerId: prm.CID[:],
+			ContainerID: prm.CID[:],
-			TreeId:      prm.TreeID,
+			TreeID:      prm.TreeID,
-			NodeId:      prm.NodeID,
+			NodeID:      prm.NodeID,
 			BearerToken: prm.BearerToken,
 		},
 	}
@@ -606,10 +604,8 @@ func (p *Pool) RemoveNode(ctx context.Context, prm RemoveNodeParams) error {
 		return err
 	}
 
-	err := p.requestWithRetry(ctx, func(client grpcService.TreeServiceClient) error {
+	err := p.requestWithRetry(ctx, func(client *rpcclient.Client) error {
-		reqCtx, cancel := context.WithTimeout(ctx, p.streamTimeout)
+		if _, err := rpcapi.Remove(client, request, rpcclient.WithContext(ctx)); err != nil {
-		defer cancel()
-		if _, err := client.Remove(reqCtx, request); err != nil {
 			return handleError("failed to remove node", err)
 		}
 		return nil
@@ -661,11 +657,11 @@ func handleError(msg string, err error) error {
 	return fmt.Errorf("%s: %w", msg, err)
 }
 
-func metaToKV(meta map[string]string) []*grpcService.KeyValue {
+func metaToKV(meta map[string]string) []*tree.KeyValue {
-	result := make([]*grpcService.KeyValue, 0, len(meta))
+	result := make([]*tree.KeyValue, 0, len(meta))
 
 	for key, value := range meta {
-		result = append(result, &grpcService.KeyValue{Key: key, Value: []byte(value)})
+		result = append(result, &tree.KeyValue{Key: key, Value: []byte(value)})
 	}
 
 	return result
@@ -814,10 +810,10 @@ func (p *Pool) setStartIndices(i, j int) {
 	p.startIndicesMtx.Unlock()
 }
 
-func (p *Pool) requestWithRetry(ctx context.Context, fn func(client grpcService.TreeServiceClient) error) error {
+func (p *Pool) requestWithRetry(ctx context.Context, fn func(client *rpcclient.Client) error) error {
 	var (
 		err, finErr error
-		cl          grpcService.TreeServiceClient
+		cl          *rpcclient.Client
 	)
 
 	reqID := GetRequestID(ctx)

pool/tree/pool_signature.go

@@ -9,7 +9,7 @@ type message interface {
 	SignedDataSize() int
 	ReadSignedData([]byte) ([]byte, error)
 	GetSignature() *tree.Signature
-	SetSignature(*tree.Signature)
+	SetSignature(*tree.Signature) error
 }
 
 // signMessage uses the pool key and signs any protobuf
@@ -29,10 +29,8 @@ func (p *Pool) signRequest(m message) error {
 
 	rawPub := make([]byte, keySDK.Public().MaxEncodedSize())
 	rawPub = rawPub[:keySDK.Public().Encode(rawPub)]
-	m.SetSignature(&tree.Signature{
+	return m.SetSignature(&tree.Signature{
 		Key:  rawPub,
 		Sign: data,
 	})
-
-	return nil
 }

pool/tree/pool_test.go

@@ -5,9 +5,9 @@ import (
 	"errors"
 	"testing"
 
+	rpcClient "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/client"
 	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
-	grpcService "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree/service"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap/zaptest"
 )
@@ -17,7 +17,7 @@ type treeClientMock struct {
 	err     bool
 }
 
-func (t *treeClientMock) serviceClient() (grpcService.TreeServiceClient, error) {
+func (t *treeClientMock) serviceClient() (*rpcClient.Client, error) {
 	if t.err {
 		return nil, errors.New("serviceClient() mock error")
 	}
@@ -99,7 +99,7 @@ func TestRetry(t *testing.T) {
 		maxRequestAttempts: lenNodes,
 	}
 
-	makeFn := func(client grpcService.TreeServiceClient) error {
+	makeFn := func(client *rpcClient.Client) error {
 		return nil
 	}
 
@@ -171,7 +171,7 @@ func TestRetry(t *testing.T) {
 
 	t.Run("error empty result", func(t *testing.T) {
 		errNodes, index := 2, 0
-		err := p.requestWithRetry(ctx, func(client grpcService.TreeServiceClient) error {
+		err := p.requestWithRetry(ctx, func(client *rpcClient.Client) error {
 			if index < errNodes {
 				index++
 				return errNodeEmptyResult
@@ -184,7 +184,7 @@ func TestRetry(t *testing.T) {
 
 	t.Run("error not found", func(t *testing.T) {
 		errNodes, index := 2, 0
-		err := p.requestWithRetry(ctx, func(client grpcService.TreeServiceClient) error {
+		err := p.requestWithRetry(ctx, func(client *rpcClient.Client) error {
 			if index < errNodes {
 				index++
 				return ErrNodeNotFound
@@ -197,7 +197,7 @@ func TestRetry(t *testing.T) {
 
 	t.Run("error access denied", func(t *testing.T) {
 		var index int
-		err := p.requestWithRetry(ctx, func(client grpcService.TreeServiceClient) error {
+		err := p.requestWithRetry(ctx, func(client *rpcClient.Client) error {
 			index++
 			return ErrNodeAccessDenied
 		})