mirror of
https://github.com/ceph/ceph-csi.git
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rebase: update K8s packages to v0.32.1
Update K8s packages in go.mod to v0.32.1 Signed-off-by: Praveen M <m.praveen@ibm.com>
This commit is contained in:
Praveen M
mergify[bot]
279
vendor/github.com/containerd/ttrpc/services.go
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vendored
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279
vendor/github.com/containerd/ttrpc/services.go
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/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package ttrpc
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"os"
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"path"
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"unsafe"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"google.golang.org/protobuf/proto"
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)
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type Method func(ctx context.Context, unmarshal func(interface{}) error) (interface{}, error)
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type StreamHandler func(context.Context, StreamServer) (interface{}, error)
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type Stream struct {
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Handler StreamHandler
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StreamingClient bool
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StreamingServer bool
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}
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type ServiceDesc struct {
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Methods map[string]Method
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Streams map[string]Stream
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}
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type serviceSet struct {
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services map[string]*ServiceDesc
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unaryInterceptor UnaryServerInterceptor
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streamInterceptor StreamServerInterceptor
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}
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func newServiceSet(interceptor UnaryServerInterceptor) *serviceSet {
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return &serviceSet{
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services: make(map[string]*ServiceDesc),
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unaryInterceptor: interceptor,
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streamInterceptor: defaultStreamServerInterceptor,
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}
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}
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func (s *serviceSet) register(name string, desc *ServiceDesc) {
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if _, ok := s.services[name]; ok {
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panic(fmt.Errorf("duplicate service %v registered", name))
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}
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s.services[name] = desc
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}
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func (s *serviceSet) unaryCall(ctx context.Context, method Method, info *UnaryServerInfo, data []byte) (p []byte, st *status.Status) {
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unmarshal := func(obj interface{}) error {
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return protoUnmarshal(data, obj)
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}
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resp, err := s.unaryInterceptor(ctx, unmarshal, info, method)
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if err == nil {
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if isNil(resp) {
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err = errors.New("ttrpc: marshal called with nil")
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} else {
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p, err = protoMarshal(resp)
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}
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}
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st, ok := status.FromError(err)
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if !ok {
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st = status.New(convertCode(err), err.Error())
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}
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return p, st
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}
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func (s *serviceSet) streamCall(ctx context.Context, stream StreamHandler, info *StreamServerInfo, ss StreamServer) (p []byte, st *status.Status) {
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resp, err := s.streamInterceptor(ctx, ss, info, stream)
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if err == nil {
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p, err = protoMarshal(resp)
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}
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st, ok := status.FromError(err)
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if !ok {
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st = status.New(convertCode(err), err.Error())
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}
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return
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}
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func (s *serviceSet) handle(ctx context.Context, req *Request, respond func(*status.Status, []byte, bool, bool) error) (*streamHandler, error) {
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srv, ok := s.services[req.Service]
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if !ok {
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return nil, status.Errorf(codes.Unimplemented, "service %v", req.Service)
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}
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if method, ok := srv.Methods[req.Method]; ok {
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go func() {
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ctx, cancel := getRequestContext(ctx, req)
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defer cancel()
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info := &UnaryServerInfo{
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FullMethod: fullPath(req.Service, req.Method),
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}
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p, st := s.unaryCall(ctx, method, info, req.Payload)
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respond(st, p, false, true)
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}()
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return nil, nil
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}
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if stream, ok := srv.Streams[req.Method]; ok {
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ctx, cancel := getRequestContext(ctx, req)
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info := &StreamServerInfo{
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FullMethod: fullPath(req.Service, req.Method),
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StreamingClient: stream.StreamingClient,
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StreamingServer: stream.StreamingServer,
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}
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sh := &streamHandler{
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ctx: ctx,
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respond: respond,
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recv: make(chan Unmarshaler, 5),
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info: info,
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}
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go func() {
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defer cancel()
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p, st := s.streamCall(ctx, stream.Handler, info, sh)
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respond(st, p, stream.StreamingServer, true)
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}()
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// Empty proto messages serialized to 0 payloads,
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// so signatures like: rpc Stream(google.protobuf.Empty) returns (stream Data);
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// don't get invoked here, which causes hang on client side.
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// See https://github.com/containerd/ttrpc/issues/126
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if req.Payload != nil || !info.StreamingClient {
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unmarshal := func(obj interface{}) error {
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return protoUnmarshal(req.Payload, obj)
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}
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if err := sh.data(unmarshal); err != nil {
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return nil, err
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}
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}
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return sh, nil
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}
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return nil, status.Errorf(codes.Unimplemented, "method %v", req.Method)
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}
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type streamHandler struct {
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ctx context.Context
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respond func(*status.Status, []byte, bool, bool) error
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recv chan Unmarshaler
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info *StreamServerInfo
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remoteClosed bool
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localClosed bool
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}
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func (s *streamHandler) closeSend() {
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if !s.remoteClosed {
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s.remoteClosed = true
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close(s.recv)
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}
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}
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func (s *streamHandler) data(unmarshal Unmarshaler) error {
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if s.remoteClosed {
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return ErrStreamClosed
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}
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select {
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case s.recv <- unmarshal:
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return nil
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case <-s.ctx.Done():
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return s.ctx.Err()
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}
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}
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func (s *streamHandler) SendMsg(m interface{}) error {
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if s.localClosed {
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return ErrStreamClosed
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}
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p, err := protoMarshal(m)
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if err != nil {
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return err
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}
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return s.respond(nil, p, true, false)
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}
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func (s *streamHandler) RecvMsg(m interface{}) error {
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select {
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case unmarshal, ok := <-s.recv:
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if !ok {
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return io.EOF
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}
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return unmarshal(m)
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case <-s.ctx.Done():
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return s.ctx.Err()
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}
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}
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func protoUnmarshal(p []byte, obj interface{}) error {
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switch v := obj.(type) {
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case proto.Message:
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if err := proto.Unmarshal(p, v); err != nil {
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return status.Errorf(codes.Internal, "ttrpc: error unmarshalling payload: %v", err.Error())
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}
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default:
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return status.Errorf(codes.Internal, "ttrpc: error unsupported request type: %T", v)
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}
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return nil
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}
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func protoMarshal(obj interface{}) ([]byte, error) {
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if obj == nil {
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return nil, nil
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}
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switch v := obj.(type) {
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case proto.Message:
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r, err := proto.Marshal(v)
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if err != nil {
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return nil, status.Errorf(codes.Internal, "ttrpc: error marshaling payload: %v", err.Error())
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}
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return r, nil
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default:
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return nil, status.Errorf(codes.Internal, "ttrpc: error unsupported response type: %T", v)
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}
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}
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// convertCode maps stdlib go errors into grpc space.
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//
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// This is ripped from the grpc-go code base.
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func convertCode(err error) codes.Code {
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switch err {
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case nil:
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return codes.OK
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case io.EOF:
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return codes.OutOfRange
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case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF:
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return codes.FailedPrecondition
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case os.ErrInvalid:
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return codes.InvalidArgument
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case context.Canceled:
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return codes.Canceled
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case context.DeadlineExceeded:
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return codes.DeadlineExceeded
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}
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switch {
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case os.IsExist(err):
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return codes.AlreadyExists
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case os.IsNotExist(err):
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return codes.NotFound
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case os.IsPermission(err):
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return codes.PermissionDenied
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}
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return codes.Unknown
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}
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func fullPath(service, method string) string {
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return "/" + path.Join(service, method)
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}
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func isNil(resp interface{}) bool {
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return (*[2]uintptr)(unsafe.Pointer(&resp))[1] == 0
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}
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