1 // 2 // 3 // Copyright 2018 gRPC authors. 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 // 17 // 18 19 #include <grpc/support/port_platform.h> 20 21 #include <memory> 22 #include <string> 23 24 #include <grpcpp/ext/channelz_service_plugin.h> 25 #include <grpcpp/impl/server_builder_plugin.h> 26 #include <grpcpp/impl/server_initializer.h> 27 #include <grpcpp/server_builder.h> 28 29 #include "src/cpp/server/channelz/channelz_service.h" 30 31 namespace grpc { 32 namespace channelz { 33 namespace experimental { 34 35 class ChannelzServicePlugin : public grpc::ServerBuilderPlugin { 36 public: ChannelzServicePlugin()37 ChannelzServicePlugin() : channelz_service_(new grpc::ChannelzService()) {} 38 name()39 std::string name() override { return "channelz_service"; } 40 InitServer(grpc::ServerInitializer * si)41 void InitServer(grpc::ServerInitializer* si) override { 42 si->RegisterService(channelz_service_); 43 } 44 Finish(grpc::ServerInitializer *)45 void Finish(grpc::ServerInitializer* /*si*/) override {} 46 ChangeArguments(const std::string &,void *)47 void ChangeArguments(const std::string& /*name*/, void* /*value*/) override {} 48 has_sync_methods() const49 bool has_sync_methods() const override { 50 if (channelz_service_) { 51 return channelz_service_->has_synchronous_methods(); 52 } 53 return false; 54 } 55 has_async_methods() const56 bool has_async_methods() const override { 57 if (channelz_service_) { 58 return channelz_service_->has_async_methods(); 59 } 60 return false; 61 } 62 63 private: 64 std::shared_ptr<grpc::ChannelzService> channelz_service_; 65 }; 66 67 static std::unique_ptr<grpc::ServerBuilderPlugin> CreateChannelzServicePlugin()68CreateChannelzServicePlugin() { 69 return std::unique_ptr<grpc::ServerBuilderPlugin>( 70 new ChannelzServicePlugin()); 71 } 72 InitChannelzService()73void InitChannelzService() { 74 static struct Initializer { 75 Initializer() { 76 grpc::ServerBuilder::InternalAddPluginFactory( 77 &grpc::channelz::experimental::CreateChannelzServicePlugin); 78 } 79 } initialize; 80 } 81 82 } // namespace experimental 83 } // namespace channelz 84 } // namespace grpc 85