/*
 * Tencent is pleased to support the open source community by making BK-BASE 蓝鲸基础平台 available.
 *
 * Copyright (C) 2021 THL A29 Limited, a Tencent company.  All rights reserved.
 *
 * BK-BASE 蓝鲸基础平台 is licensed under the MIT License.
 *
 * License for BK-BASE 蓝鲸基础平台:
 * --------------------------------------------------------------------
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
 * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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 */

package com.tencent.bk.base.dataflow.flink.streaming.checkpoint;

import com.tencent.bk.base.dataflow.checkpoint.CheckpointManager;
import com.tencent.bk.base.dataflow.flink.streaming.checkpoint.types.AbstractCheckpointKey;
import com.tencent.bk.base.dataflow.flink.streaming.checkpoint.types.TimestampCheckpointKey;
import java.util.Map;

public abstract class AbstractFlinkStreamingCheckpointManager extends CheckpointManager {

    public abstract void savePoint(AbstractCheckpointKey checkpointKey, CheckpointValue.OutputCheckpoint checkpoint);

    public abstract CheckpointValue.OutputCheckpoint getPoint(AbstractCheckpointKey checkpointKey);

    public abstract Map<Integer, CheckpointValue.OutputCheckpoint> listCheckpoints(String nodeId);

    public abstract void open();

    public abstract void close();

    /**
     * 获取最小的checkpoint的timestamp
     *
     * @param streamName
     * @return
     */
    public CheckpointValue.OutputCheckpoint estimateStartTimeFromCheckpoints(String streamName) {
        // 这里进来的checkpoint肯定是timestamp todo
        CheckpointValue.OutputCheckpoint checkpoint = getPoint(new TimestampCheckpointKey(streamName));
        CheckpointValue.OutputCheckpoint emptyObject = new CheckpointValue.OutputCheckpoint();
        emptyObject.setPointValue(0L);
        return null == checkpoint ? emptyObject : checkpoint;
    }
}
