reflection update
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
parent
9e0a58405f
commit
3036359547
@ -36,7 +36,6 @@ func Options(opts ...grpc.ServerOption) server.Option {
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return server.SetOption(grpcOptions{}, opts)
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}
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//
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// MaxMsgSize set the maximum message in bytes the server can receive and
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// send. Default maximum message size is 4 MB.
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func MaxMsgSize(s int) server.Option {
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@ -44,8 +43,8 @@ func MaxMsgSize(s int) server.Option {
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}
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// Reflection enables reflection support in grpc server
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func Reflection(b bool) server.Option {
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return server.SetOption(reflectionKey{}, b)
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func Reflection(r Reflector) server.Option {
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return server.SetOption(reflectionKey{}, r)
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}
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// UnknownServiceHandler enables support for all services
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495
reflection.go
495
reflection.go
@ -1,488 +1,23 @@
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// +build ignore
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/*
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*
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* Copyright 2016 gRPC authors.
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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*/
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/*
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Package reflection implements server reflection service.
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The service implemented is defined in:
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https://github.com/grpc/grpc/blob/master/src/proto/grpc/reflection/v1alpha/reflection.proto.
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To register server reflection on a gRPC server:
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import "google.golang.org/grpc/reflection"
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s := grpc.NewServer()
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pb.RegisterYourOwnServer(s, &server{})
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// Register reflection service on gRPC server.
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reflection.Register(s)
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s.Serve(lis)
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*/
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package grpc
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import (
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"bytes"
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"compress/gzip"
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"fmt"
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"io"
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"io/ioutil"
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"reflect"
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"sort"
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"sync"
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"github.com/golang/protobuf/proto"
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dpb "github.com/golang/protobuf/protoc-gen-go/descriptor"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
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rpb "google.golang.org/grpc/reflection/grpc_reflection_v1alpha"
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"google.golang.org/grpc/status"
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"google.golang.org/grpc/reflection"
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"google.golang.org/protobuf/reflect/protodesc"
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)
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type serverReflectionServer struct {
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rpb.UnimplementedServerReflectionServer
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s *grpc.Server
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initSymbols sync.Once
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serviceNames []string
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symbols map[string]*dpb.FileDescriptorProto // map of fully-qualified names to files
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type Reflector interface {
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protodesc.Resolver
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reflection.ServiceInfoProvider
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reflection.ExtensionResolver
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}
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// Register registers the server reflection service on the given gRPC server.
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func Register(s *grpc.Server) {
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rpb.RegisterServerReflectionServer(s, &serverReflectionServer{
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s: s,
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})
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}
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const (
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// ReflectV1ServiceName is the fully-qualified name of the v1 version of the reflection service.
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ReflectV1ServiceName = "grpc.reflection.v1.ServerReflection"
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// ReflectV1AlphaServiceName is the fully-qualified name of the v1alpha version of the reflection service.
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ReflectV1AlphaServiceName = "grpc.reflection.v1alpha.ServerReflection"
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// protoMessage is used for type assertion on proto messages.
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// Generated proto message implements function Descriptor(), but Descriptor()
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// is not part of interface proto.Message. This interface is needed to
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// call Descriptor().
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type protoMessage interface {
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Descriptor() ([]byte, []int)
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}
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func (s *serverReflectionServer) getSymbols() (svcNames []string, symbolIndex map[string]*dpb.FileDescriptorProto) {
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s.initSymbols.Do(func() {
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serviceInfo := s.s.GetServiceInfo()
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s.symbols = map[string]*dpb.FileDescriptorProto{}
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s.serviceNames = make([]string, 0, len(serviceInfo))
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processed := map[string]struct{}{}
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for svc, info := range serviceInfo {
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s.serviceNames = append(s.serviceNames, svc)
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fdenc, ok := parseMetadata(info.Metadata)
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if !ok {
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continue
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}
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fd, err := decodeFileDesc(fdenc)
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if err != nil {
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continue
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}
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s.processFile(fd, processed)
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}
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sort.Strings(s.serviceNames)
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})
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return s.serviceNames, s.symbols
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}
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func (s *serverReflectionServer) processFile(fd *dpb.FileDescriptorProto, processed map[string]struct{}) {
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filename := fd.GetName()
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if _, ok := processed[filename]; ok {
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return
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}
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processed[filename] = struct{}{}
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prefix := fd.GetPackage()
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for _, msg := range fd.MessageType {
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s.processMessage(fd, prefix, msg)
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}
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for _, en := range fd.EnumType {
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s.processEnum(fd, prefix, en)
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}
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for _, ext := range fd.Extension {
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s.processField(fd, prefix, ext)
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}
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for _, svc := range fd.Service {
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svcName := fqn(prefix, svc.GetName())
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s.symbols[svcName] = fd
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for _, meth := range svc.Method {
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name := fqn(svcName, meth.GetName())
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s.symbols[name] = fd
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}
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}
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for _, dep := range fd.Dependency {
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fdenc := proto.FileDescriptor(dep)
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fdDep, err := decodeFileDesc(fdenc)
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if err != nil {
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continue
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}
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s.processFile(fdDep, processed)
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}
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}
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func (s *serverReflectionServer) processMessage(fd *dpb.FileDescriptorProto, prefix string, msg *dpb.DescriptorProto) {
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msgName := fqn(prefix, msg.GetName())
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s.symbols[msgName] = fd
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for _, nested := range msg.NestedType {
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s.processMessage(fd, msgName, nested)
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}
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for _, en := range msg.EnumType {
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s.processEnum(fd, msgName, en)
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}
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for _, ext := range msg.Extension {
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s.processField(fd, msgName, ext)
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}
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for _, fld := range msg.Field {
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s.processField(fd, msgName, fld)
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}
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for _, oneof := range msg.OneofDecl {
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oneofName := fqn(msgName, oneof.GetName())
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s.symbols[oneofName] = fd
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}
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}
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func (s *serverReflectionServer) processEnum(fd *dpb.FileDescriptorProto, prefix string, en *dpb.EnumDescriptorProto) {
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enName := fqn(prefix, en.GetName())
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s.symbols[enName] = fd
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for _, val := range en.Value {
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valName := fqn(enName, val.GetName())
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s.symbols[valName] = fd
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}
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}
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func (s *serverReflectionServer) processField(fd *dpb.FileDescriptorProto, prefix string, fld *dpb.FieldDescriptorProto) {
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fldName := fqn(prefix, fld.GetName())
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s.symbols[fldName] = fd
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}
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func fqn(prefix, name string) string {
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if prefix == "" {
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return name
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}
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return prefix + "." + name
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}
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// fileDescForType gets the file descriptor for the given type.
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// The given type should be a proto message.
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func (s *serverReflectionServer) fileDescForType(st reflect.Type) (*dpb.FileDescriptorProto, error) {
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m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(protoMessage)
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if !ok {
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return nil, fmt.Errorf("failed to create message from type: %v", st)
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}
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enc, _ := m.Descriptor()
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return decodeFileDesc(enc)
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}
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// decodeFileDesc does decompression and unmarshalling on the given
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// file descriptor byte slice.
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func decodeFileDesc(enc []byte) (*dpb.FileDescriptorProto, error) {
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raw, err := decompress(enc)
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if err != nil {
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return nil, fmt.Errorf("failed to decompress enc: %v", err)
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}
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fd := new(dpb.FileDescriptorProto)
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if err := proto.Unmarshal(raw, fd); err != nil {
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return nil, fmt.Errorf("bad descriptor: %v", err)
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}
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return fd, nil
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}
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// decompress does gzip decompression.
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func decompress(b []byte) ([]byte, error) {
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r, err := gzip.NewReader(bytes.NewReader(b))
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if err != nil {
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return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
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}
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out, err := ioutil.ReadAll(r)
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if err != nil {
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return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
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}
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return out, nil
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}
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func typeForName(name string) (reflect.Type, error) {
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pt := proto.MessageType(name)
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if pt == nil {
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return nil, fmt.Errorf("unknown type: %q", name)
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}
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st := pt.Elem()
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return st, nil
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}
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func fileDescContainingExtension(st reflect.Type, ext int32) (*dpb.FileDescriptorProto, error) {
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m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(proto.Message)
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if !ok {
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return nil, fmt.Errorf("failed to create message from type: %v", st)
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}
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var extDesc *proto.ExtensionDesc
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for id, desc := range proto.RegisteredExtensions(m) {
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if id == ext {
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extDesc = desc
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break
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}
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}
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if extDesc == nil {
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return nil, fmt.Errorf("failed to find registered extension for extension number %v", ext)
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}
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return decodeFileDesc(proto.FileDescriptor(extDesc.Filename))
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}
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func (s *serverReflectionServer) allExtensionNumbersForType(st reflect.Type) ([]int32, error) {
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m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(proto.Message)
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if !ok {
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return nil, fmt.Errorf("failed to create message from type: %v", st)
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}
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exts := proto.RegisteredExtensions(m)
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out := make([]int32, 0, len(exts))
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for id := range exts {
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out = append(out, id)
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}
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return out, nil
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}
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// fileDescWithDependencies returns a slice of serialized fileDescriptors in
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// wire format ([]byte). The fileDescriptors will include fd and all the
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// transitive dependencies of fd with names not in sentFileDescriptors.
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func fileDescWithDependencies(fd *dpb.FileDescriptorProto, sentFileDescriptors map[string]bool) ([][]byte, error) {
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r := [][]byte{}
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queue := []*dpb.FileDescriptorProto{fd}
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for len(queue) > 0 {
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currentfd := queue[0]
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queue = queue[1:]
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if sent := sentFileDescriptors[currentfd.GetName()]; len(r) == 0 || !sent {
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sentFileDescriptors[currentfd.GetName()] = true
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currentfdEncoded, err := proto.Marshal(currentfd)
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if err != nil {
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return nil, err
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}
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r = append(r, currentfdEncoded)
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}
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for _, dep := range currentfd.Dependency {
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fdenc := proto.FileDescriptor(dep)
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fdDep, err := decodeFileDesc(fdenc)
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if err != nil {
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continue
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}
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queue = append(queue, fdDep)
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}
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}
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return r, nil
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}
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// fileDescEncodingByFilename finds the file descriptor for given filename,
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// finds all of its previously unsent transitive dependencies, does marshalling
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// on them, and returns the marshalled result.
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func (s *serverReflectionServer) fileDescEncodingByFilename(name string, sentFileDescriptors map[string]bool) ([][]byte, error) {
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enc := proto.FileDescriptor(name)
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if enc == nil {
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return nil, fmt.Errorf("unknown file: %v", name)
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}
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fd, err := decodeFileDesc(enc)
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if err != nil {
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return nil, err
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}
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return fileDescWithDependencies(fd, sentFileDescriptors)
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}
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// parseMetadata finds the file descriptor bytes specified meta.
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// For SupportPackageIsVersion4, m is the name of the proto file, we
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// call proto.FileDescriptor to get the byte slice.
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// For SupportPackageIsVersion3, m is a byte slice itself.
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func parseMetadata(meta interface{}) ([]byte, bool) {
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// Check if meta is the file name.
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if fileNameForMeta, ok := meta.(string); ok {
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return proto.FileDescriptor(fileNameForMeta), true
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}
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// Check if meta is the byte slice.
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if enc, ok := meta.([]byte); ok {
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return enc, true
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}
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return nil, false
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}
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// fileDescEncodingContainingSymbol finds the file descriptor containing the
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// given symbol, finds all of its previously unsent transitive dependencies,
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// does marshalling on them, and returns the marshalled result. The given symbol
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// can be a type, a service or a method.
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func (s *serverReflectionServer) fileDescEncodingContainingSymbol(name string, sentFileDescriptors map[string]bool) ([][]byte, error) {
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_, symbols := s.getSymbols()
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fd := symbols[name]
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if fd == nil {
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// Check if it's a type name that was not present in the
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// transitive dependencies of the registered services.
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if st, err := typeForName(name); err == nil {
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fd, err = s.fileDescForType(st)
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if err != nil {
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return nil, err
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}
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}
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}
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if fd == nil {
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return nil, fmt.Errorf("unknown symbol: %v", name)
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}
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return fileDescWithDependencies(fd, sentFileDescriptors)
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}
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// fileDescEncodingContainingExtension finds the file descriptor containing
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// given extension, finds all of its previously unsent transitive dependencies,
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// does marshalling on them, and returns the marshalled result.
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func (s *serverReflectionServer) fileDescEncodingContainingExtension(typeName string, extNum int32, sentFileDescriptors map[string]bool) ([][]byte, error) {
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st, err := typeForName(typeName)
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if err != nil {
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return nil, err
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}
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fd, err := fileDescContainingExtension(st, extNum)
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if err != nil {
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return nil, err
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}
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return fileDescWithDependencies(fd, sentFileDescriptors)
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}
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// allExtensionNumbersForTypeName returns all extension numbers for the given type.
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func (s *serverReflectionServer) allExtensionNumbersForTypeName(name string) ([]int32, error) {
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st, err := typeForName(name)
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if err != nil {
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return nil, err
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}
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extNums, err := s.allExtensionNumbersForType(st)
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if err != nil {
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return nil, err
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}
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return extNums, nil
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}
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// ServerReflectionInfo is the reflection service handler.
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func (s *serverReflectionServer) ServerReflectionInfo(stream rpb.ServerReflection_ServerReflectionInfoServer) error {
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sentFileDescriptors := make(map[string]bool)
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for {
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in, err := stream.Recv()
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if err == io.EOF {
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return nil
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}
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if err != nil {
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return err
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}
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out := &rpb.ServerReflectionResponse{
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ValidHost: in.Host,
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OriginalRequest: in,
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}
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switch req := in.MessageRequest.(type) {
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case *rpb.ServerReflectionRequest_FileByFilename:
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b, err := s.fileDescEncodingByFilename(req.FileByFilename, sentFileDescriptors)
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if err != nil {
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out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
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ErrorResponse: &rpb.ErrorResponse{
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ErrorCode: int32(codes.NotFound),
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ErrorMessage: err.Error(),
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},
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}
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} else {
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out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
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FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: b},
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}
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}
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case *rpb.ServerReflectionRequest_FileContainingSymbol:
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b, err := s.fileDescEncodingContainingSymbol(req.FileContainingSymbol, sentFileDescriptors)
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if err != nil {
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out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
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ErrorResponse: &rpb.ErrorResponse{
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ErrorCode: int32(codes.NotFound),
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ErrorMessage: err.Error(),
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},
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}
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} else {
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out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
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FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: b},
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}
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}
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case *rpb.ServerReflectionRequest_FileContainingExtension:
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typeName := req.FileContainingExtension.ContainingType
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extNum := req.FileContainingExtension.ExtensionNumber
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b, err := s.fileDescEncodingContainingExtension(typeName, extNum, sentFileDescriptors)
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if err != nil {
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out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
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ErrorResponse: &rpb.ErrorResponse{
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ErrorCode: int32(codes.NotFound),
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ErrorMessage: err.Error(),
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},
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}
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} else {
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out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
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FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: b},
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}
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}
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case *rpb.ServerReflectionRequest_AllExtensionNumbersOfType:
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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
|
||||
}
|
||||
}
|
||||
}
|
||||
ReflectServiceURLPathV1 = "/" + ReflectV1ServiceName + "/"
|
||||
ReflectServiceURLPathV1Alpha = "/" + ReflectV1AlphaServiceName + "/"
|
||||
ReflectMethodName = "ServerReflectionInfo"
|
||||
)
|
||||
|
||||
489
reflection_old.go
Normal file
489
reflection_old.go
Normal file
@ -0,0 +1,489 @@
|
||||
//go:build ignore
|
||||
// +build ignore
|
||||
|
||||
/*
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
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 grpc
|
||||
|
||||
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 {
|
||||
rpb.UnimplementedServerReflectionServer
|
||||
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
|
||||
}
|
||||
|
||||
// fileDescWithDependencies returns a slice of serialized fileDescriptors in
|
||||
// wire format ([]byte). The fileDescriptors will include fd and all the
|
||||
// transitive dependencies of fd with names not in sentFileDescriptors.
|
||||
func fileDescWithDependencies(fd *dpb.FileDescriptorProto, sentFileDescriptors map[string]bool) ([][]byte, error) {
|
||||
r := [][]byte{}
|
||||
queue := []*dpb.FileDescriptorProto{fd}
|
||||
for len(queue) > 0 {
|
||||
currentfd := queue[0]
|
||||
queue = queue[1:]
|
||||
if sent := sentFileDescriptors[currentfd.GetName()]; len(r) == 0 || !sent {
|
||||
sentFileDescriptors[currentfd.GetName()] = true
|
||||
currentfdEncoded, err := proto.Marshal(currentfd)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
r = append(r, currentfdEncoded)
|
||||
}
|
||||
for _, dep := range currentfd.Dependency {
|
||||
fdenc := proto.FileDescriptor(dep)
|
||||
fdDep, err := decodeFileDesc(fdenc)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
queue = append(queue, fdDep)
|
||||
}
|
||||
}
|
||||
return r, nil
|
||||
}
|
||||
|
||||
// fileDescEncodingByFilename finds the file descriptor for given filename,
|
||||
// finds all of its previously unsent transitive dependencies, does marshalling
|
||||
// on them, and returns the marshalled result.
|
||||
func (s *serverReflectionServer) fileDescEncodingByFilename(name string, sentFileDescriptors map[string]bool) ([][]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 fileDescWithDependencies(fd, sentFileDescriptors)
|
||||
}
|
||||
|
||||
// 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, finds all of its previously unsent transitive dependencies,
|
||||
// does marshalling on them, and returns the marshalled result. The given symbol
|
||||
// can be a type, a service or a method.
|
||||
func (s *serverReflectionServer) fileDescEncodingContainingSymbol(name string, sentFileDescriptors map[string]bool) ([][]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 fileDescWithDependencies(fd, sentFileDescriptors)
|
||||
}
|
||||
|
||||
// fileDescEncodingContainingExtension finds the file descriptor containing
|
||||
// given extension, finds all of its previously unsent transitive dependencies,
|
||||
// does marshalling on them, and returns the marshalled result.
|
||||
func (s *serverReflectionServer) fileDescEncodingContainingExtension(typeName string, extNum int32, sentFileDescriptors map[string]bool) ([][]byte, error) {
|
||||
st, err := typeForName(typeName)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
fd, err := fileDescContainingExtension(st, extNum)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return fileDescWithDependencies(fd, sentFileDescriptors)
|
||||
}
|
||||
|
||||
// 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 {
|
||||
sentFileDescriptors := make(map[string]bool)
|
||||
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, sentFileDescriptors)
|
||||
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: b},
|
||||
}
|
||||
}
|
||||
case *rpb.ServerReflectionRequest_FileContainingSymbol:
|
||||
b, err := s.fileDescEncodingContainingSymbol(req.FileContainingSymbol, sentFileDescriptors)
|
||||
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: b},
|
||||
}
|
||||
}
|
||||
case *rpb.ServerReflectionRequest_FileContainingExtension:
|
||||
typeName := req.FileContainingExtension.ContainingType
|
||||
extNum := req.FileContainingExtension.ExtensionNumber
|
||||
b, err := s.fileDescEncodingContainingExtension(typeName, extNum, sentFileDescriptors)
|
||||
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: 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
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user