1 files changed, 172 insertions, 0 deletions
diff --git a/extensions/reflection/proto_server_reflection.cc b/extensions/reflection/proto_server_reflection.cc
new file mode 100644
index 0000000000..0662bb595a
--- /dev/null
+++ b/extensions/reflection/proto_server_reflection.cc
@@ -0,0 +1,172 @@
+/*
+ *
+ * Copyright 2016, 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.
+ *
+ */
+
+#include <iostream>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/descriptor.pb.h>
+#include <grpc++/grpc++.h>
+
+#include "reflection/proto_server_reflection.h"
+
+using grpc::Status;
+using grpc::StatusCode;
+using google::protobuf::MethodDescriptor;
+using google::protobuf::ServiceDescriptor;
+using google::protobuf::Descriptor;
+using google::protobuf::FileDescriptor;
+using google::protobuf::FieldDescriptor;
+using google::protobuf::DescriptorPool;
+using google::protobuf::FileDescriptorProto;
+using grpc::reflection::v1alpha::EmptyRequest;
+using grpc::reflection::v1alpha::ListServiceResponse;
+using grpc::reflection::v1alpha::FileNameRequest;
+using grpc::reflection::v1alpha::SymbolRequest;
+using grpc::reflection::v1alpha::ExtensionRequest;
+using grpc::reflection::v1alpha::TypeRequest;
+using grpc::reflection::v1alpha::FileDescriptorProtoResponse;
+using grpc::reflection::v1alpha::ExtensionNumberResponse;
+
+namespace grpc {
+
+ProtoServerReflection::ProtoServerReflection()
+    : descriptor_pool_(DescriptorPool::generated_pool()) {}
+
+void ProtoServerReflection::SetServiceList(
+    const std::vector<grpc::string>* services) {
+  services_ = services;
+}
+
+Status ProtoServerReflection::ListService(ServerContext* context,
+                                          const EmptyRequest* request,
+                                          ListServiceResponse* response) {
+  if (services_ == nullptr) {
+    return Status(StatusCode::NOT_FOUND, "Services not found.");
+  }
+  for (auto it = services_->begin(); it != services_->end(); ++it) {
+    response->add_services(*it);
+  }
+  return Status::OK;
+}
+
+Status ProtoServerReflection::GetFileByName(
+    ServerContext* context, const FileNameRequest* request,
+    FileDescriptorProtoResponse* response) {
+  if (descriptor_pool_ == nullptr) {
+    return Status::CANCELLED;
+  }
+
+  const FileDescriptor* file_desc =
+      descriptor_pool_->FindFileByName(request->filename());
+  if (file_desc == nullptr) {
+    return Status(StatusCode::NOT_FOUND, "File not found.");
+  }
+  FillFileDescriptorProtoResponse(file_desc, response);
+  // file_desc->CopyTo(response->mutable_file_descriptor_proto());
+  return Status::OK;
+}
+
+Status ProtoServerReflection::GetFileContainingSymbol(
+    ServerContext* context, const SymbolRequest* request,
+    FileDescriptorProtoResponse* response) {
+  if (descriptor_pool_ == nullptr) {
+    return Status::CANCELLED;
+  }
+
+  const FileDescriptor* file_desc =
+      descriptor_pool_->FindFileContainingSymbol(request->symbol());
+  if (file_desc == nullptr) {
+    return Status(StatusCode::NOT_FOUND, "Symbol not found.");
+  }
+  FillFileDescriptorProtoResponse(file_desc, response);
+  // file_desc->CopyTo(response->mutable_file_descriptor_proto());
+  return Status::OK;
+}
+
+Status ProtoServerReflection::GetFileContainingExtension(
+    ServerContext* context, const ExtensionRequest* request,
+    FileDescriptorProtoResponse* response) {
+  if (descriptor_pool_ == nullptr) {
+    return Status::CANCELLED;
+  }
+
+  const Descriptor* desc =
+      descriptor_pool_->FindMessageTypeByName(request->containing_type());
+  if (desc == nullptr) {
+    return Status(StatusCode::NOT_FOUND, "Type not found.");
+  }
+
+  const FieldDescriptor* field_desc = descriptor_pool_->FindExtensionByNumber(
+      desc, request->extension_number());
+  if (field_desc == nullptr) {
+    return Status(StatusCode::NOT_FOUND, "Extension not found.");
+  }
+  FillFileDescriptorProtoResponse(field_desc->file(), response);
+  // field_desc->file()->CopyTo(response->mutable_file_descriptor_proto());
+  return Status::OK;
+}
+
+Status ProtoServerReflection::GetAllExtensionNumbers(
+    ServerContext* context, const TypeRequest* request,
+    ExtensionNumberResponse* response) {
+  if (descriptor_pool_ == nullptr) {
+    return Status::CANCELLED;
+  }
+
+  const Descriptor* desc =
+      descriptor_pool_->FindMessageTypeByName(request->type());
+  if (desc == nullptr) {
+    return Status(StatusCode::NOT_FOUND, "Type not found.");
+  }
+
+  std::vector<const FieldDescriptor*> extensions;
+  descriptor_pool_->FindAllExtensions(desc, &extensions);
+  for (auto extension : extensions) {
+    response->add_extension_number(extension->number());
+  }
+  return Status::OK;
+}
+
+void ProtoServerReflection::FillFileDescriptorProtoResponse(
+    const FileDescriptor* file_desc, FileDescriptorProtoResponse* response) {
+  FileDescriptorProto file_desc_proto;
+  grpc::string data;
+  file_desc->CopyTo(&file_desc_proto);
+  file_desc_proto.SerializeToString(&data);
+  response->set_file_descriptor_proto(data);
+}
+
+}  // namespace grpc