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Diffstat (limited to 'test/cpp/util/proto_reflection_descriptor_database.h')
-rw-r--r-- | test/cpp/util/proto_reflection_descriptor_database.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/test/cpp/util/proto_reflection_descriptor_database.h b/test/cpp/util/proto_reflection_descriptor_database.h new file mode 100644 index 0000000000..99c00675bb --- /dev/null +++ b/test/cpp/util/proto_reflection_descriptor_database.h @@ -0,0 +1,131 @@ +/* + * + * 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. + * + */ +#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 <google/protobuf/descriptor.h> +#include <google/protobuf/descriptor.pb.h> +#include <google/protobuf/descriptor_database.h> +#include <grpc++/ext/reflection.grpc.pb.h> +#include <grpc++/grpc++.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 google::protobuf::DescriptorDatabase { + public: + explicit ProtoReflectionDescriptorDatabase( + std::unique_ptr<reflection::v1alpha::ServerReflection::Stub> stub); + + explicit ProtoReflectionDescriptorDatabase( + 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, + google::protobuf::FileDescriptorProto* output) + GRPC_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, + google::protobuf::FileDescriptorProto* output) + GRPC_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, + google::protobuf::FileDescriptorProto* output) GRPC_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) GRPC_OVERRIDE; + + // Provide a list of full names of registered services + bool GetServices(std::vector<std::string>* output); + + 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 + +#endif // GRPC_TEST_CPP_METRICS_SERVER_H |