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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.
+ *
+ */
+#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