[VOL-4648] Add connection to sysrepo and subscribe to NETCONF 'get' requests with dummy callback
Change-Id: I9124d9b9430ee1358885bdb5c65dedfb3c5d3978
diff --git a/vendor/google.golang.org/grpc/reflection/serverreflection.go b/vendor/google.golang.org/grpc/reflection/serverreflection.go
new file mode 100644
index 0000000..dd22a2d
--- /dev/null
+++ b/vendor/google.golang.org/grpc/reflection/serverreflection.go
@@ -0,0 +1,454 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+//go:generate protoc --go_out=plugins=grpc:. grpc_reflection_v1alpha/reflection.proto
+
+/*
+Package reflection implements server reflection service.
+
+The service implemented is defined in:
+https://github.com/grpc/grpc/blob/master/src/proto/grpc/reflection/v1alpha/reflection.proto.
+
+To register server reflection on a gRPC server:
+ import "google.golang.org/grpc/reflection"
+
+ s := grpc.NewServer()
+ pb.RegisterYourOwnServer(s, &server{})
+
+ // Register reflection service on gRPC server.
+ reflection.Register(s)
+
+ s.Serve(lis)
+
+*/
+package reflection // import "google.golang.org/grpc/reflection"
+
+import (
+ "bytes"
+ "compress/gzip"
+ "fmt"
+ "io"
+ "io/ioutil"
+ "reflect"
+ "sort"
+ "sync"
+
+ "github.com/golang/protobuf/proto"
+ dpb "github.com/golang/protobuf/protoc-gen-go/descriptor"
+ "google.golang.org/grpc"
+ "google.golang.org/grpc/codes"
+ rpb "google.golang.org/grpc/reflection/grpc_reflection_v1alpha"
+ "google.golang.org/grpc/status"
+)
+
+type serverReflectionServer struct {
+ s *grpc.Server
+
+ initSymbols sync.Once
+ serviceNames []string
+ symbols map[string]*dpb.FileDescriptorProto // map of fully-qualified names to files
+}
+
+// Register registers the server reflection service on the given gRPC server.
+func Register(s *grpc.Server) {
+ rpb.RegisterServerReflectionServer(s, &serverReflectionServer{
+ s: s,
+ })
+}
+
+// protoMessage is used for type assertion on proto messages.
+// Generated proto message implements function Descriptor(), but Descriptor()
+// is not part of interface proto.Message. This interface is needed to
+// call Descriptor().
+type protoMessage interface {
+ Descriptor() ([]byte, []int)
+}
+
+func (s *serverReflectionServer) getSymbols() (svcNames []string, symbolIndex map[string]*dpb.FileDescriptorProto) {
+ s.initSymbols.Do(func() {
+ serviceInfo := s.s.GetServiceInfo()
+
+ s.symbols = map[string]*dpb.FileDescriptorProto{}
+ s.serviceNames = make([]string, 0, len(serviceInfo))
+ processed := map[string]struct{}{}
+ for svc, info := range serviceInfo {
+ s.serviceNames = append(s.serviceNames, svc)
+ fdenc, ok := parseMetadata(info.Metadata)
+ if !ok {
+ continue
+ }
+ fd, err := decodeFileDesc(fdenc)
+ if err != nil {
+ continue
+ }
+ s.processFile(fd, processed)
+ }
+ sort.Strings(s.serviceNames)
+ })
+
+ return s.serviceNames, s.symbols
+}
+
+func (s *serverReflectionServer) processFile(fd *dpb.FileDescriptorProto, processed map[string]struct{}) {
+ filename := fd.GetName()
+ if _, ok := processed[filename]; ok {
+ return
+ }
+ processed[filename] = struct{}{}
+
+ prefix := fd.GetPackage()
+
+ for _, msg := range fd.MessageType {
+ s.processMessage(fd, prefix, msg)
+ }
+ for _, en := range fd.EnumType {
+ s.processEnum(fd, prefix, en)
+ }
+ for _, ext := range fd.Extension {
+ s.processField(fd, prefix, ext)
+ }
+ for _, svc := range fd.Service {
+ svcName := fqn(prefix, svc.GetName())
+ s.symbols[svcName] = fd
+ for _, meth := range svc.Method {
+ name := fqn(svcName, meth.GetName())
+ s.symbols[name] = fd
+ }
+ }
+
+ for _, dep := range fd.Dependency {
+ fdenc := proto.FileDescriptor(dep)
+ fdDep, err := decodeFileDesc(fdenc)
+ if err != nil {
+ continue
+ }
+ s.processFile(fdDep, processed)
+ }
+}
+
+func (s *serverReflectionServer) processMessage(fd *dpb.FileDescriptorProto, prefix string, msg *dpb.DescriptorProto) {
+ msgName := fqn(prefix, msg.GetName())
+ s.symbols[msgName] = fd
+
+ for _, nested := range msg.NestedType {
+ s.processMessage(fd, msgName, nested)
+ }
+ for _, en := range msg.EnumType {
+ s.processEnum(fd, msgName, en)
+ }
+ for _, ext := range msg.Extension {
+ s.processField(fd, msgName, ext)
+ }
+ for _, fld := range msg.Field {
+ s.processField(fd, msgName, fld)
+ }
+ for _, oneof := range msg.OneofDecl {
+ oneofName := fqn(msgName, oneof.GetName())
+ s.symbols[oneofName] = fd
+ }
+}
+
+func (s *serverReflectionServer) processEnum(fd *dpb.FileDescriptorProto, prefix string, en *dpb.EnumDescriptorProto) {
+ enName := fqn(prefix, en.GetName())
+ s.symbols[enName] = fd
+
+ for _, val := range en.Value {
+ valName := fqn(enName, val.GetName())
+ s.symbols[valName] = fd
+ }
+}
+
+func (s *serverReflectionServer) processField(fd *dpb.FileDescriptorProto, prefix string, fld *dpb.FieldDescriptorProto) {
+ fldName := fqn(prefix, fld.GetName())
+ s.symbols[fldName] = fd
+}
+
+func fqn(prefix, name string) string {
+ if prefix == "" {
+ return name
+ }
+ return prefix + "." + name
+}
+
+// fileDescForType gets the file descriptor for the given type.
+// The given type should be a proto message.
+func (s *serverReflectionServer) fileDescForType(st reflect.Type) (*dpb.FileDescriptorProto, error) {
+ m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(protoMessage)
+ if !ok {
+ return nil, fmt.Errorf("failed to create message from type: %v", st)
+ }
+ enc, _ := m.Descriptor()
+
+ return decodeFileDesc(enc)
+}
+
+// decodeFileDesc does decompression and unmarshalling on the given
+// file descriptor byte slice.
+func decodeFileDesc(enc []byte) (*dpb.FileDescriptorProto, error) {
+ raw, err := decompress(enc)
+ if err != nil {
+ return nil, fmt.Errorf("failed to decompress enc: %v", err)
+ }
+
+ fd := new(dpb.FileDescriptorProto)
+ if err := proto.Unmarshal(raw, fd); err != nil {
+ return nil, fmt.Errorf("bad descriptor: %v", err)
+ }
+ return fd, nil
+}
+
+// decompress does gzip decompression.
+func decompress(b []byte) ([]byte, error) {
+ r, err := gzip.NewReader(bytes.NewReader(b))
+ if err != nil {
+ return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
+ }
+ out, err := ioutil.ReadAll(r)
+ if err != nil {
+ return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
+ }
+ return out, nil
+}
+
+func typeForName(name string) (reflect.Type, error) {
+ pt := proto.MessageType(name)
+ if pt == nil {
+ return nil, fmt.Errorf("unknown type: %q", name)
+ }
+ st := pt.Elem()
+
+ return st, nil
+}
+
+func fileDescContainingExtension(st reflect.Type, ext int32) (*dpb.FileDescriptorProto, error) {
+ m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(proto.Message)
+ if !ok {
+ return nil, fmt.Errorf("failed to create message from type: %v", st)
+ }
+
+ var extDesc *proto.ExtensionDesc
+ for id, desc := range proto.RegisteredExtensions(m) {
+ if id == ext {
+ extDesc = desc
+ break
+ }
+ }
+
+ if extDesc == nil {
+ return nil, fmt.Errorf("failed to find registered extension for extension number %v", ext)
+ }
+
+ return decodeFileDesc(proto.FileDescriptor(extDesc.Filename))
+}
+
+func (s *serverReflectionServer) allExtensionNumbersForType(st reflect.Type) ([]int32, error) {
+ m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(proto.Message)
+ if !ok {
+ return nil, fmt.Errorf("failed to create message from type: %v", st)
+ }
+
+ exts := proto.RegisteredExtensions(m)
+ out := make([]int32, 0, len(exts))
+ for id := range exts {
+ out = append(out, id)
+ }
+ return out, nil
+}
+
+// fileDescEncodingByFilename finds the file descriptor for given filename,
+// does marshalling on it and returns the marshalled result.
+func (s *serverReflectionServer) fileDescEncodingByFilename(name string) ([]byte, error) {
+ enc := proto.FileDescriptor(name)
+ if enc == nil {
+ return nil, fmt.Errorf("unknown file: %v", name)
+ }
+ fd, err := decodeFileDesc(enc)
+ if err != nil {
+ return nil, err
+ }
+ return proto.Marshal(fd)
+}
+
+// parseMetadata finds the file descriptor bytes specified meta.
+// For SupportPackageIsVersion4, m is the name of the proto file, we
+// call proto.FileDescriptor to get the byte slice.
+// For SupportPackageIsVersion3, m is a byte slice itself.
+func parseMetadata(meta interface{}) ([]byte, bool) {
+ // Check if meta is the file name.
+ if fileNameForMeta, ok := meta.(string); ok {
+ return proto.FileDescriptor(fileNameForMeta), true
+ }
+
+ // Check if meta is the byte slice.
+ if enc, ok := meta.([]byte); ok {
+ return enc, true
+ }
+
+ return nil, false
+}
+
+// fileDescEncodingContainingSymbol finds the file descriptor containing the given symbol,
+// does marshalling on it and returns the marshalled result.
+// The given symbol can be a type, a service or a method.
+func (s *serverReflectionServer) fileDescEncodingContainingSymbol(name string) ([]byte, error) {
+ _, symbols := s.getSymbols()
+ fd := symbols[name]
+ if fd == nil {
+ // Check if it's a type name that was not present in the
+ // transitive dependencies of the registered services.
+ if st, err := typeForName(name); err == nil {
+ fd, err = s.fileDescForType(st)
+ if err != nil {
+ return nil, err
+ }
+ }
+ }
+
+ if fd == nil {
+ return nil, fmt.Errorf("unknown symbol: %v", name)
+ }
+
+ return proto.Marshal(fd)
+}
+
+// fileDescEncodingContainingExtension finds the file descriptor containing given extension,
+// does marshalling on it and returns the marshalled result.
+func (s *serverReflectionServer) fileDescEncodingContainingExtension(typeName string, extNum int32) ([]byte, error) {
+ st, err := typeForName(typeName)
+ if err != nil {
+ return nil, err
+ }
+ fd, err := fileDescContainingExtension(st, extNum)
+ if err != nil {
+ return nil, err
+ }
+ return proto.Marshal(fd)
+}
+
+// allExtensionNumbersForTypeName returns all extension numbers for the given type.
+func (s *serverReflectionServer) allExtensionNumbersForTypeName(name string) ([]int32, error) {
+ st, err := typeForName(name)
+ if err != nil {
+ return nil, err
+ }
+ extNums, err := s.allExtensionNumbersForType(st)
+ if err != nil {
+ return nil, err
+ }
+ return extNums, nil
+}
+
+// ServerReflectionInfo is the reflection service handler.
+func (s *serverReflectionServer) ServerReflectionInfo(stream rpb.ServerReflection_ServerReflectionInfoServer) error {
+ for {
+ in, err := stream.Recv()
+ if err == io.EOF {
+ return nil
+ }
+ if err != nil {
+ return err
+ }
+
+ out := &rpb.ServerReflectionResponse{
+ ValidHost: in.Host,
+ OriginalRequest: in,
+ }
+ switch req := in.MessageRequest.(type) {
+ case *rpb.ServerReflectionRequest_FileByFilename:
+ b, err := s.fileDescEncodingByFilename(req.FileByFilename)
+ if err != nil {
+ out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
+ ErrorResponse: &rpb.ErrorResponse{
+ ErrorCode: int32(codes.NotFound),
+ ErrorMessage: err.Error(),
+ },
+ }
+ } else {
+ out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
+ FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: [][]byte{b}},
+ }
+ }
+ case *rpb.ServerReflectionRequest_FileContainingSymbol:
+ b, err := s.fileDescEncodingContainingSymbol(req.FileContainingSymbol)
+ if err != nil {
+ out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
+ ErrorResponse: &rpb.ErrorResponse{
+ ErrorCode: int32(codes.NotFound),
+ ErrorMessage: err.Error(),
+ },
+ }
+ } else {
+ out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
+ FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: [][]byte{b}},
+ }
+ }
+ case *rpb.ServerReflectionRequest_FileContainingExtension:
+ typeName := req.FileContainingExtension.ContainingType
+ extNum := req.FileContainingExtension.ExtensionNumber
+ b, err := s.fileDescEncodingContainingExtension(typeName, extNum)
+ if err != nil {
+ out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
+ ErrorResponse: &rpb.ErrorResponse{
+ ErrorCode: int32(codes.NotFound),
+ ErrorMessage: err.Error(),
+ },
+ }
+ } else {
+ out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
+ FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: [][]byte{b}},
+ }
+ }
+ case *rpb.ServerReflectionRequest_AllExtensionNumbersOfType:
+ extNums, err := s.allExtensionNumbersForTypeName(req.AllExtensionNumbersOfType)
+ if err != nil {
+ out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
+ ErrorResponse: &rpb.ErrorResponse{
+ ErrorCode: int32(codes.NotFound),
+ ErrorMessage: err.Error(),
+ },
+ }
+ } else {
+ out.MessageResponse = &rpb.ServerReflectionResponse_AllExtensionNumbersResponse{
+ AllExtensionNumbersResponse: &rpb.ExtensionNumberResponse{
+ BaseTypeName: req.AllExtensionNumbersOfType,
+ ExtensionNumber: extNums,
+ },
+ }
+ }
+ case *rpb.ServerReflectionRequest_ListServices:
+ svcNames, _ := s.getSymbols()
+ serviceResponses := make([]*rpb.ServiceResponse, len(svcNames))
+ for i, n := range svcNames {
+ serviceResponses[i] = &rpb.ServiceResponse{
+ Name: n,
+ }
+ }
+ out.MessageResponse = &rpb.ServerReflectionResponse_ListServicesResponse{
+ ListServicesResponse: &rpb.ListServiceResponse{
+ Service: serviceResponses,
+ },
+ }
+ default:
+ return status.Errorf(codes.InvalidArgument, "invalid MessageRequest: %v", in.MessageRequest)
+ }
+
+ if err := stream.Send(out); err != nil {
+ return err
+ }
+ }
+}