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/*
*
* 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.
*
*/
#ifndef GRPC_TEST_CPP_PROTO_SERVER_REFLECTION_DATABSE_H
#define GRPC_TEST_CPP_PROTO_SERVER_REFLECTION_DATABSE_H
#include <mutex>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <grpcpp/grpcpp.h>
#include <grpcpp/impl/codegen/config_protobuf.h>
#include "src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.h"
namespace grpc {
// ProtoReflectionDescriptorDatabase takes a stub of ServerReflection and
// provides the methods defined by DescriptorDatabase interfaces. It can be used
// to feed a DescriptorPool instance.
class ProtoReflectionDescriptorDatabase : public protobuf::DescriptorDatabase {
public:
explicit ProtoReflectionDescriptorDatabase(
std::unique_ptr<reflection::v1alpha::ServerReflection::Stub> stub);
explicit ProtoReflectionDescriptorDatabase(
const std::shared_ptr<grpc::Channel>& channel);
virtual ~ProtoReflectionDescriptorDatabase();
// The following four methods implement DescriptorDatabase interfaces.
//
// Find a file by file name. Fills in in *output and returns true if found.
// Otherwise, returns false, leaving the contents of *output undefined.
bool FindFileByName(const string& filename,
protobuf::FileDescriptorProto* output) override;
// Find the file that declares the given fully-qualified symbol name.
// If found, fills in *output and returns true, otherwise returns false
// and leaves *output undefined.
bool FindFileContainingSymbol(const string& symbol_name,
protobuf::FileDescriptorProto* output) override;
// Find the file which defines an extension extending the given message type
// with the given field number. If found, fills in *output and returns true,
// otherwise returns false and leaves *output undefined. containing_type
// must be a fully-qualified type name.
bool FindFileContainingExtension(
const string& containing_type, int field_number,
protobuf::FileDescriptorProto* output) override;
// Finds the tag numbers used by all known extensions of
// extendee_type, and appends them to output in an undefined
// order. This method is best-effort: it's not guaranteed that the
// database will find all extensions, and it's not guaranteed that
// FindFileContainingExtension will return true on all of the found
// numbers. Returns true if the search was successful, otherwise
// returns false and leaves output unchanged.
bool FindAllExtensionNumbers(const string& extendee_type,
std::vector<int>* output) override;
// Provide a list of full names of registered services
bool GetServices(std::vector<grpc::string>* output);
private:
typedef ClientReaderWriter<
grpc::reflection::v1alpha::ServerReflectionRequest,
grpc::reflection::v1alpha::ServerReflectionResponse>
ClientStream;
const protobuf::FileDescriptorProto ParseFileDescriptorProtoResponse(
const grpc::string& byte_fd_proto);
void AddFileFromResponse(
const grpc::reflection::v1alpha::FileDescriptorResponse& response);
const std::shared_ptr<ClientStream> GetStream();
bool 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_;
protobuf::SimpleDescriptorDatabase cached_db_;
};
} // namespace grpc
#endif // GRPC_TEST_CPP_METRICS_SERVER_H
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