service_manager.h

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/******************************************************************************
 * Copyright 2018 The Apollo Authors. All Rights Reserved.
 *
 * 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.
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#ifndef CYBER_SERVICE_DISCOVERY_SPECIFIC_MANAGER_SERVICE_MANAGER_H_
#define CYBER_SERVICE_DISCOVERY_SPECIFIC_MANAGER_SERVICE_MANAGER_H_

#include <memory>
#include <string>
#include <vector>

#include "cyber/service_discovery/container/multi_value_warehouse.h"
#include "cyber/service_discovery/container/single_value_warehouse.h"
#include "cyber/service_discovery/role/role.h"
#include "cyber/service_discovery/specific_manager/manager.h"

namespace apollo {
namespace cyber {
namespace service_discovery {

class TopologyManager;

class ServiceManager : public Manager {
  friend class TopologyManager;

 public:
  using RoleAttrVec = std::vector<RoleAttributes>;
  using ServerWarehouse = SingleValueWarehouse;
  using ClientWarehouse = MultiValueWarehouse;

  ServiceManager();

  virtual ~ServiceManager();

  bool HasService(const std::string& service_name);

  void GetServers(RoleAttrVec* servers);

  void GetClients(const std::string& service_name, RoleAttrVec* clients);

 private:
  bool Check(const RoleAttributes& attr) override;
  void Dispose(const ChangeMsg& msg) override;
  void OnTopoModuleLeave(const std::string& host_name, int process_id) override;

  void DisposeJoin(const ChangeMsg& msg);
  void DisposeLeave(const ChangeMsg& msg);

  ServerWarehouse servers_;
  ClientWarehouse clients_;
};

}  // namespace service_discovery
}  // namespace cyber
}  // namespace apollo

#endif  //  CYBER_SERVICE_DISCOVERY_SPECIFIC_MANAGER_SERVICE_MANAGER_H_