/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */
#pragma once

#include <functional>

#include "absl/container/flat_hash_set.h"

#include "ClientConfig.h"

ROCKETMQ_NAMESPACE_BEGIN

class Client : virtual public ClientConfig {
public:
  ~Client() override = default;

  virtual void endpointsInUse(absl::flat_hash_set<std::string> &endpoints) = 0;

  virtual void heartbeat() = 0;

  virtual bool active() = 0;

  virtual void onRemoteEndpointRemoval(const std::vector<std::string> &) = 0;

  /**
   * For endpoints that are marked as inactive due to one or multiple business
   * operation failure, this function is to initiate health-check RPCs; Once the
   * health-check passes, they are conceptually add back to serve further
   * business workload.
   */
  virtual void healthCheck() = 0;

  virtual void schedule(const std::string &task_name,
                        const std::function<void(void)> &task,
                        std::chrono::milliseconds delay) = 0;

  virtual void notifyClientTermination() = 0;
};

ROCKETMQ_NAMESPACE_END