[#11] transport: Implement gRPC server handlers of API service

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/multiformats/go-multihash v0.0.13
 	github.com/nspcc-dev/hrw v1.0.9
 	github.com/nspcc-dev/neo-go v0.90.0
-	github.com/nspcc-dev/neofs-api-go v1.3.1-0.20200820112910-89e79ebe72b0
+	github.com/nspcc-dev/neofs-api-go v1.3.1-0.20200821125006-afd2ce0400ec
 	github.com/nspcc-dev/neofs-crypto v0.3.0
 	github.com/nspcc-dev/netmap v1.7.0
 	github.com/nspcc-dev/tzhash v1.4.0 // indirect

pkg/network/transport/accounting/grpc/service.go

@@ -0,0 +1,32 @@
+package accounting
+
+import (
+	"context"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/accounting"
+	accountingGRPC "github.com/nspcc-dev/neofs-api-go/v2/accounting/grpc"
+)
+
+// Server wraps NeoFS API Accounting service and
+// provides gRPC Accounting service server interface.
+type Server struct {
+	srv accounting.Service
+}
+
+// New creates, initializes and returns Server instance.
+func New(c accounting.Service) *Server {
+	return &Server{
+		srv: c,
+	}
+}
+
+// Balance converts gRPC BalanceRequest message and passes it to internal Accounting service.
+func (s *Server) Balance(ctx context.Context, req *accountingGRPC.BalanceRequest) (*accountingGRPC.BalanceResponse, error) {
+	resp, err := s.srv.Balance(ctx, accounting.BalanceRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return accounting.BalanceResponseToGRPCMessage(resp), nil
+}

pkg/network/transport/container/grpc/service.go

@@ -0,0 +1,87 @@
+package container
+
+import (
+	"context"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/container"
+	containerGRPC "github.com/nspcc-dev/neofs-api-go/v2/container/grpc"
+)
+
+// Server wraps NeoFS API Container service and
+// provides gRPC Container service server interface.
+type Server struct {
+	srv container.Service
+}
+
+// New creates, initializes and returns Server instance.
+func New(c container.Service) *Server {
+	return &Server{
+		srv: c,
+	}
+}
+
+// Put converts gRPC PutRequest message and passes it to internal Container service.
+func (s *Server) Put(ctx context.Context, req *containerGRPC.PutRequest) (*containerGRPC.PutResponse, error) {
+	resp, err := s.srv.Put(ctx, container.PutRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return container.PutResponseToGRPCMessage(resp), nil
+}
+
+// Delete converts gRPC DeleteRequest message and passes it to internal Container service.
+func (s *Server) Delete(ctx context.Context, req *containerGRPC.DeleteRequest) (*containerGRPC.DeleteResponse, error) {
+	resp, err := s.srv.Delete(ctx, container.DeleteRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return container.DeleteResponseToGRPCMessage(resp), nil
+}
+
+// Get converts gRPC GetRequest message and passes it to internal Container service.
+func (s *Server) Get(ctx context.Context, req *containerGRPC.GetRequest) (*containerGRPC.GetResponse, error) {
+	resp, err := s.srv.Get(ctx, container.GetRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return container.GetResponseToGRPCMessage(resp), nil
+}
+
+// List converts gRPC ListRequest message and passes it to internal Container service.
+func (s *Server) List(ctx context.Context, req *containerGRPC.ListRequest) (*containerGRPC.ListResponse, error) {
+	resp, err := s.srv.List(ctx, container.ListRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return container.ListResponseToGRPCMessage(resp), nil
+}
+
+// SetExtendedACL converts gRPC SetExtendedACLRequest message and passes it to internal Container service.
+func (s *Server) SetExtendedACL(ctx context.Context, req *containerGRPC.SetExtendedACLRequest) (*containerGRPC.SetExtendedACLResponse, error) {
+	resp, err := s.srv.SetExtendedACL(ctx, container.SetExtendedACLRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return container.SetExtendedACLResponseToGRPCMessage(resp), nil
+}
+
+// GetExtendedACL converts gRPC GetExtendedACLRequest message and passes it to internal Container service.
+func (s *Server) GetExtendedACL(ctx context.Context, req *containerGRPC.GetExtendedACLRequest) (*containerGRPC.GetExtendedACLResponse, error) {
+	resp, err := s.srv.GetExtendedACL(ctx, container.GetExtendedACLRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return container.GetExtendedACLResponseToGRPCMessage(resp), nil
+}

pkg/network/transport/object/grpc/service.go

@@ -0,0 +1,159 @@
+package object
+
+import (
+	"context"
+	"io"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/object"
+	objectGRPC "github.com/nspcc-dev/neofs-api-go/v2/object/grpc"
+)
+
+// Server wraps NeoFS API Object service and
+// provides gRPC Object service server interface.
+type Server struct {
+	srv object.Service
+}
+
+// New creates, initializes and returns Server instance.
+func New(c object.Service) *Server {
+	return &Server{
+		srv: c,
+	}
+}
+
+// Get converts gRPC GetRequest message, opens internal Object service Get stream and overtakes its data
+// to gRPC stream.
+func (s *Server) Get(req *objectGRPC.GetRequest, gStream objectGRPC.ObjectService_GetServer) error {
+	stream, err := s.srv.Get(gStream.Context(), object.GetRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return err
+	}
+
+	for {
+		r, err := stream.Recv()
+		if err != nil {
+			if err == io.EOF {
+				return nil
+			}
+
+			return err
+		}
+
+		if err := gStream.Send(object.GetResponseToGRPCMessage(r)); err != nil {
+			return err
+		}
+	}
+}
+
+// Put opens internal Object service Put stream and overtakes data from gRPC stream to it.
+func (s *Server) Put(gStream objectGRPC.ObjectService_PutServer) error {
+	stream, err := s.srv.Put(gStream.Context())
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return err
+	}
+
+	for {
+		req, err := gStream.Recv()
+		if err == nil {
+			if err := stream.Send(object.PutRequestFromGRPCMessage(req)); err != nil {
+				return err
+			}
+		}
+
+		if err == io.EOF {
+			resp, err := stream.CloseAndRecv()
+			if err != nil {
+				return err
+			}
+
+			return gStream.SendAndClose(object.PutResponseToGRPCMessage(resp))
+		}
+
+		return err
+	}
+}
+
+// Delete converts gRPC DeleteRequest message and passes it to internal Object service.
+func (s *Server) Delete(ctx context.Context, req *objectGRPC.DeleteRequest) (*objectGRPC.DeleteResponse, error) {
+	resp, err := s.srv.Delete(ctx, object.DeleteRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return object.DeleteResponseToGRPCMessage(resp), nil
+}
+
+// Head converts gRPC HeadRequest message and passes it to internal Object service.
+func (s *Server) Head(ctx context.Context, req *objectGRPC.HeadRequest) (*objectGRPC.HeadResponse, error) {
+	resp, err := s.srv.Head(ctx, object.HeadRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return object.HeadResponseToGRPCMessage(resp), nil
+}
+
+// Search converts gRPC SearchRequest message, opens internal Object service Search stream and overtakes its data
+// to gRPC stream.
+func (s *Server) Search(req *objectGRPC.SearchRequest, gStream objectGRPC.ObjectService_SearchServer) error {
+	stream, err := s.srv.Search(gStream.Context(), object.SearchRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return err
+	}
+
+	for {
+		r, err := stream.Recv()
+		if err != nil {
+			if err == io.EOF {
+				return nil
+			}
+
+			return err
+		}
+
+		if err := gStream.Send(object.SearchResponseToGRPCMessage(r)); err != nil {
+			return err
+		}
+	}
+}
+
+// GetRange converts gRPC GetRangeRequest message, opens internal Object service Search stream and overtakes its data
+// to gRPC stream.
+func (s *Server) GetRange(req *objectGRPC.GetRangeRequest, gStream objectGRPC.ObjectService_GetRangeServer) error {
+	stream, err := s.srv.GetRange(gStream.Context(), object.GetRangeRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return err
+	}
+
+	for {
+		r, err := stream.Recv()
+		if err != nil {
+			if err == io.EOF {
+				return nil
+			}
+
+			return err
+		}
+
+		if err := gStream.Send(object.GetRangeResponseToGRPCMessage(r)); err != nil {
+			return err
+		}
+	}
+}
+
+// GetRangeHash converts gRPC GetRangeHashRequest message and passes it to internal Object service.
+func (s *Server) GetRangeHash(ctx context.Context, req *objectGRPC.GetRangeHashRequest) (*objectGRPC.GetRangeHashResponse, error) {
+	resp, err := s.srv.GetRangeHash(ctx, object.GetRangeHashRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return object.GetRangeHashResponseToGRPCMessage(resp), nil
+}

pkg/network/transport/session/grpc/service.go

@@ -0,0 +1,32 @@
+package accounting
+
+import (
+	"context"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/session"
+	sessionGRPC "github.com/nspcc-dev/neofs-api-go/v2/session/grpc"
+)
+
+// Server wraps NeoFS API Session service and
+// provides gRPC Session service server interface.
+type Server struct {
+	srv session.Service
+}
+
+// New creates, initializes and returns Server instance.
+func New(c session.Service) *Server {
+	return &Server{
+		srv: c,
+	}
+}
+
+// Create converts gRPC CreateRequest message and passes it to internal Session service.
+func (s *Server) Create(ctx context.Context, req *sessionGRPC.CreateRequest) (*sessionGRPC.CreateResponse, error) {
+	resp, err := s.srv.Create(ctx, session.CreateRequestFromGRPCMessage(req))
+	if err != nil {
+		// TODO: think about how we transport errors through gRPC
+		return nil, err
+	}
+
+	return session.CreateResponseToGRPCMessage(resp), nil
+}