// 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 <butil/macros.h>

#include <gen_cpp/HeartbeatService.h>

#include <stdint.h>

#include <mutex>

#include "common/status.h"

namespace doris {

class ClusterInfo;

class THeartbeatResult;

class TMasterInfo;

const uint32_t HEARTBEAT_INTERVAL = 10;

class BaseStorageEngine;

class HeartbeatServer : public HeartbeatServiceIf {

public:

    explicit HeartbeatServer(ClusterInfo* cluster_info);

    ~HeartbeatServer() override = default;

    void init_cluster_id();

    // Master send heartbeat to this server

    //

    // Input parameters:

    // * master_info: The struct of master info, contains cluster info from Master FE

    //

    // Output parameters:

    // * heartbeat_result: The result of heartbeat set

    void heartbeat(THeartbeatResult& heartbeat_result, const TMasterInfo& master_info) override;

private:

    Status _heartbeat(const TMasterInfo& master_info);

    BaseStorageEngine& _engine;

    int64_t _be_epoch;

    // mutex to protect cluster_info and _epoch

    std::mutex _hb_mtx;

    // Not owned. Point to the ExecEnv::_cluster_info

    ClusterInfo* _cluster_info = nullptr;

    int64_t _fe_epoch;

    DISALLOW_COPY_AND_ASSIGN(HeartbeatServer);

}; // class HeartBeatServer

} // namespace doris