| #region Copyright notice and license |
| // Copyright 2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| #endregion |
| |
| using System; |
| using System.Collections.Generic; |
| using System.Linq; |
| using System.Text; |
| using System.Threading.Tasks; |
| |
| using Grpc.Core; |
| using Grpc.Core.Utils; |
| using Grpc.Reflection.V1Alpha; |
| using Google.Protobuf.Reflection; |
| |
| namespace Grpc.Reflection |
| { |
| /// <summary> |
| /// Implementation of server reflection service. |
| /// </summary> |
| public class ReflectionServiceImpl : Grpc.Reflection.V1Alpha.ServerReflection.ServerReflectionBase |
| { |
| readonly List<string> services; |
| readonly SymbolRegistry symbolRegistry; |
| |
| /// <summary> |
| /// Creates a new instance of <c>ReflectionServiceIml</c>. |
| /// </summary> |
| public ReflectionServiceImpl(IEnumerable<string> services, SymbolRegistry symbolRegistry) |
| { |
| this.services = new List<string>(services); |
| this.symbolRegistry = symbolRegistry; |
| } |
| |
| /// <summary> |
| /// Creates a new instance of <c>ReflectionServiceIml</c>. |
| /// </summary> |
| public ReflectionServiceImpl(IEnumerable<ServiceDescriptor> serviceDescriptors) |
| { |
| this.services = new List<string>(serviceDescriptors.Select((serviceDescriptor) => serviceDescriptor.FullName)); |
| this.symbolRegistry = SymbolRegistry.FromFiles(serviceDescriptors.Select((serviceDescriptor) => serviceDescriptor.File)); |
| } |
| |
| /// <summary> |
| /// Creates a new instance of <c>ReflectionServiceIml</c>. |
| /// </summary> |
| public ReflectionServiceImpl(params ServiceDescriptor[] serviceDescriptors) : this((IEnumerable<ServiceDescriptor>) serviceDescriptors) |
| { |
| } |
| |
| public override async Task ServerReflectionInfo(IAsyncStreamReader<ServerReflectionRequest> requestStream, IServerStreamWriter<ServerReflectionResponse> responseStream, ServerCallContext context) |
| { |
| while (await requestStream.MoveNext()) |
| { |
| var response = ProcessRequest(requestStream.Current); |
| await responseStream.WriteAsync(response); |
| } |
| } |
| |
| ServerReflectionResponse ProcessRequest(ServerReflectionRequest request) |
| { |
| switch (request.MessageRequestCase) |
| { |
| case ServerReflectionRequest.MessageRequestOneofCase.FileByFilename: |
| return FileByFilename(request.FileByFilename); |
| case ServerReflectionRequest.MessageRequestOneofCase.FileContainingSymbol: |
| return FileContainingSymbol(request.FileContainingSymbol); |
| case ServerReflectionRequest.MessageRequestOneofCase.ListServices: |
| return ListServices(); |
| case ServerReflectionRequest.MessageRequestOneofCase.AllExtensionNumbersOfType: |
| case ServerReflectionRequest.MessageRequestOneofCase.FileContainingExtension: |
| default: |
| return CreateErrorResponse(StatusCode.Unimplemented, "Request type not supported by C# reflection service."); |
| } |
| } |
| |
| ServerReflectionResponse FileByFilename(string filename) |
| { |
| FileDescriptor file = symbolRegistry.FileByName(filename); |
| if (file == null) |
| { |
| return CreateErrorResponse(StatusCode.NotFound, "File not found."); |
| } |
| |
| var transitiveDependencies = new HashSet<FileDescriptor>(); |
| CollectTransitiveDependencies(file, transitiveDependencies); |
| |
| return new ServerReflectionResponse |
| { |
| FileDescriptorResponse = new FileDescriptorResponse { FileDescriptorProto = { transitiveDependencies.Select((d) => d.SerializedData) } } |
| }; |
| } |
| |
| ServerReflectionResponse FileContainingSymbol(string symbol) |
| { |
| FileDescriptor file = symbolRegistry.FileContainingSymbol(symbol); |
| if (file == null) |
| { |
| return CreateErrorResponse(StatusCode.NotFound, "Symbol not found."); |
| } |
| |
| var transitiveDependencies = new HashSet<FileDescriptor>(); |
| CollectTransitiveDependencies(file, transitiveDependencies); |
| |
| return new ServerReflectionResponse |
| { |
| FileDescriptorResponse = new FileDescriptorResponse { FileDescriptorProto = { transitiveDependencies.Select((d) => d.SerializedData) } } |
| }; |
| } |
| |
| ServerReflectionResponse ListServices() |
| { |
| var serviceResponses = new ListServiceResponse(); |
| foreach (string serviceName in services) |
| { |
| serviceResponses.Service.Add(new ServiceResponse { Name = serviceName }); |
| } |
| |
| return new ServerReflectionResponse |
| { |
| ListServicesResponse = serviceResponses |
| }; |
| } |
| |
| ServerReflectionResponse CreateErrorResponse(StatusCode status, string message) |
| { |
| return new ServerReflectionResponse |
| { |
| ErrorResponse = new ErrorResponse { ErrorCode = (int) status, ErrorMessage = message } |
| }; |
| } |
| |
| void CollectTransitiveDependencies(FileDescriptor descriptor, HashSet<FileDescriptor> pool) |
| { |
| pool.Add(descriptor); |
| foreach (var dependency in descriptor.Dependencies) |
| { |
| if (pool.Add(dependency)) |
| { |
| // descriptors cannot have circular dependencies |
| CollectTransitiveDependencies(dependency, pool); |
| } |
| } |
| } |
| } |
| } |