channelz_service_plugin.cc

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/*
 *
 * Copyright 2018 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.
 *
 */
 
#include <grpc/support/port_platform.h>
 
#include <memory>
#include <string>
 
#include <grpcpp/ext/channelz_service_plugin.h>
#include <grpcpp/impl/server_builder_plugin.h>
#include <grpcpp/impl/server_initializer.h>
#include <grpcpp/server_builder.h>
#include <grpcpp/support/config.h>
 
#include "src/cpp/server/channelz/channelz_service.h"
 
namespace grpc {
namespace channelz {
namespace experimental {
 
class ChannelzServicePlugin : public grpc::ServerBuilderPlugin {
 public:
  ChannelzServicePlugin() : channelz_service_(new grpc::ChannelzService()) {}
 
  std::string name() override { return "channelz_service"; }
 
  void InitServer(grpc::ServerInitializer* si) override {
    si->RegisterService(channelz_service_);
  }
 
  void Finish(grpc::ServerInitializer* /*si*/) override {}
 
  void ChangeArguments(const std::string& /*name*/, void* /*value*/) override {}
 
  bool has_sync_methods() const override {
    if (channelz_service_) {
      return channelz_service_->has_synchronous_methods();
    }
    return false;
  }
 
  bool has_async_methods() const override {
    if (channelz_service_) {
      return channelz_service_->has_async_methods();
    }
    return false;
  }
 
 private:
  std::shared_ptr<grpc::ChannelzService> channelz_service_;
};
 
static std::unique_ptr<grpc::ServerBuilderPlugin>
CreateChannelzServicePlugin() {
  return std::unique_ptr<grpc::ServerBuilderPlugin>(
      new ChannelzServicePlugin());
}
 
void InitChannelzService() {
  static struct Initializer {
    Initializer() {
      grpc::ServerBuilder::InternalAddPluginFactory(
          &grpc::channelz::experimental::CreateChannelzServicePlugin);
    }
  } initialize;
}
 
}  // namespace experimental
}  // namespace channelz
}  // namespace grpc