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/*
*
* 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 <mutex>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/descriptor_database.h>
#include <grpc++/grpc++.h>
#include <grpc++/ext/reflection.grpc.pb.h>
namespace grpc {
class ProtoReflectionDescriptorDatabase
: public google::protobuf::DescriptorDatabase {
public:
explicit ProtoReflectionDescriptorDatabase(
std::unique_ptr<reflection::v1alpha::ServerReflection::Stub> stub);
explicit ProtoReflectionDescriptorDatabase(
std::shared_ptr<grpc::Channel> channel);
virtual ~ProtoReflectionDescriptorDatabase();
// DescriptorDatabase methods
bool FindFileByName(const string& filename,
google::protobuf::FileDescriptorProto* output)
GRPC_OVERRIDE;
bool FindFileContainingSymbol(const string& symbol_name,
google::protobuf::FileDescriptorProto* output)
GRPC_OVERRIDE;
bool FindFileContainingExtension(
const string& containing_type, int field_number,
google::protobuf::FileDescriptorProto* output) GRPC_OVERRIDE;
bool FindAllExtensionNumbers(const string& extendee_type,
std::vector<int>* output) GRPC_OVERRIDE;
bool GetServices(std::vector<std::string>* output);
grpc::reflection::v1alpha::ServerReflection::Stub* stub() {
return stub_.get();
}
private:
typedef ClientReaderWriter<
grpc::reflection::v1alpha::ServerReflectionRequest,
grpc::reflection::v1alpha::ServerReflectionResponse>
ClientStream;
const google::protobuf::FileDescriptorProto ParseFileDescriptorProtoResponse(
const std::string& byte_fd_proto);
void AddFileFromResponse(
const grpc::reflection::v1alpha::FileDescriptorResponse& response);
const std::shared_ptr<ClientStream> GetStream();
void DoOneRequest(
const grpc::reflection::v1alpha::ServerReflectionRequest& request,
grpc::reflection::v1alpha::ServerReflectionResponse& response);
std::shared_ptr<ClientStream> stream_;
grpc::ClientContext ctx_;
std::unique_ptr<grpc::reflection::v1alpha::ServerReflection::Stub> stub_;
std::unordered_set<string> known_files_;
std::unordered_set<string> missing_symbols_;
std::unordered_map<string, std::unordered_set<int>> missing_extensions_;
std::unordered_map<string, std::vector<int>> cached_extension_numbers_;
std::mutex stream_mutex_;
google::protobuf::SimpleDescriptorDatabase cached_db_;
};
} // namespace grpc
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