| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| // This file contains code that is copied and modified from: |
| // https://github.com/fullstorydev/grpcurl/blob/v1.8.7/desc_source.go |
| |
| package proxy |
| |
| import ( |
| "os" |
| "sync" |
| ) |
| |
| import ( |
| "github.com/jhump/protoreflect/desc" |
| "github.com/jhump/protoreflect/dynamic" |
| "github.com/pkg/errors" |
| "google.golang.org/protobuf/proto" |
| "google.golang.org/protobuf/types/descriptorpb" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pkg/filter/http/grpcproxy" |
| "github.com/apache/dubbo-go-pixiu/pkg/logger" |
| ) |
| |
| var ( |
| sourceOnce sync.Once |
| protosetSource grpcproxy.DescriptorSource |
| ) |
| |
| func InitProtosetSource(protoset []string) { |
| sourceOnce.Do(func() { |
| var err error |
| protosetSource, err = DescriptorSourceFromProtoset(protoset) |
| if err != nil { |
| logger.Infof("[dubbo-go-pixiu] could not load protoset files: %v", err) |
| } |
| }) |
| } |
| |
| // DescriptorSourceFromProtoset creates a DescriptorSource that is backed by the named files, |
| // whose contents are Protocol Buffer source files. The given importPaths are used to locate |
| // any imported files. |
| func DescriptorSourceFromProtoset(filenames []string) (grpcproxy.DescriptorSource, error) { |
| if len(filenames) < 1 { |
| return nil, errors.New("no protoset files provided") |
| } |
| files := &descriptorpb.FileDescriptorSet{} |
| for _, filename := range filenames { |
| b, err := os.ReadFile(filename) |
| if err != nil { |
| return nil, errors.Errorf("wrong path to load protoset file %q: %v", filename, err) |
| } |
| var fs descriptorpb.FileDescriptorSet |
| err = proto.Unmarshal(b, &fs) |
| if err != nil { |
| return nil, errors.Errorf("could not parse contents of protoset file %q: %v", filename, err) |
| } |
| files.File = append(files.File, fs.File...) |
| } |
| return DescriptorSourceFromFileDescriptorSet(files) |
| } |
| |
| // DescriptorSourceFromFileDescriptorSet creates a DescriptorSource that is backed by the FileDescriptorSet. |
| func DescriptorSourceFromFileDescriptorSet(files *descriptorpb.FileDescriptorSet) (grpcproxy.DescriptorSource, error) { |
| unresolved := map[string]*descriptorpb.FileDescriptorProto{} |
| for _, fd := range files.File { |
| unresolved[fd.GetName()] = fd |
| } |
| resolved := map[string]*desc.FileDescriptor{} |
| for _, fd := range files.File { |
| _, err := resolveFileDescriptor(unresolved, resolved, fd.GetName()) |
| if err != nil { |
| return nil, err |
| } |
| } |
| return &protosetFileSource{files: resolved}, nil |
| } |
| |
| func resolveFileDescriptor(unresolved map[string]*descriptorpb.FileDescriptorProto, resolved map[string]*desc.FileDescriptor, filename string) (*desc.FileDescriptor, error) { |
| if r, ok := resolved[filename]; ok { |
| return r, nil |
| } |
| fd, ok := unresolved[filename] |
| if !ok { |
| return nil, errors.Errorf("no descriptor found for %q", filename) |
| } |
| deps := make([]*desc.FileDescriptor, 0, len(fd.GetDependency())) |
| for _, dep := range fd.GetDependency() { |
| depFd, err := resolveFileDescriptor(unresolved, resolved, dep) |
| if err != nil { |
| return nil, err |
| } |
| deps = append(deps, depFd) |
| } |
| result, err := desc.CreateFileDescriptor(fd, deps...) |
| if err != nil { |
| return nil, err |
| } |
| resolved[filename] = result |
| return result, nil |
| } |
| |
| type protosetFileSource struct { |
| files map[string]*desc.FileDescriptor |
| er *dynamic.ExtensionRegistry |
| erInit sync.Once |
| } |
| |
| func (fs *protosetFileSource) ListServices() ([]string, error) { |
| set := map[string]bool{} |
| for _, fd := range fs.files { |
| for _, svc := range fd.GetServices() { |
| set[svc.GetFullyQualifiedName()] = true |
| } |
| } |
| sl := make([]string, 0, len(set)) |
| for svc := range set { |
| sl = append(sl, svc) |
| } |
| return sl, nil |
| } |
| |
| func (fs *protosetFileSource) FindSymbol(fullyQualifiedName string) (desc.Descriptor, error) { |
| for _, fd := range fs.files { |
| if dsc := fd.FindSymbol(fullyQualifiedName); dsc != nil { |
| return dsc, nil |
| } |
| } |
| return nil, errors.Errorf("Symbol not found: %s", fullyQualifiedName) |
| } |
| |
| func (fs *protosetFileSource) AllExtensionsForType(typeName string) ([]*desc.FieldDescriptor, error) { |
| fs.erInit.Do(func() { |
| fs.er = &dynamic.ExtensionRegistry{} |
| for _, fd := range fs.files { |
| fs.er.AddExtensionsFromFile(fd) |
| } |
| }) |
| return fs.er.AllExtensionsForType(typeName), nil |
| } |