Proto server reflection

1 files changed, 95 insertions, 0 deletions

diff --git a/test/cpp/util/proto_reflection_descriptor_database.h b/test/cpp/util/proto_reflection_descriptor_database.h
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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 <memory>
+#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++/impl/reflection.grpc.pb.h>
+
+// #include "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:
+  const google::protobuf::FileDescriptorProto ParseFileDescriptorProtoResponse(
+      reflection::v1alpha::FileDescriptorProtoResponse* response);
+
+  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_;
+
+  google::protobuf::SimpleDescriptorDatabase cached_db_;
+};
+
+}  // namespace grpc