/*
 * 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.
 */

package org.apache.fluss.flink.sink.shuffle;

import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.core.memory.DataInputDeserializer;
import org.apache.flink.core.memory.DataOutputSerializer;

import java.io.IOException;
import java.io.UncheckedIOException;

/** Utility class for serializing/deserializing {@link DataStatistics}. */
class StatisticsUtil {

    private StatisticsUtil() {}

    static DataStatistics createDataStatistics() {
        return new DataStatistics();
    }

    static byte[] serializeDataStatistics(
            DataStatistics dataStatistics, TypeSerializer<DataStatistics> statisticsSerializer) {
        DataOutputSerializer out = new DataOutputSerializer(64);
        try {
            statisticsSerializer.serialize(dataStatistics, out);
            return out.getCopyOfBuffer();
        } catch (IOException e) {
            throw new UncheckedIOException("Fail to serialize data statistics", e);
        }
    }

    static DataStatistics deserializeDataStatistics(
            byte[] bytes, TypeSerializer<DataStatistics> statisticsSerializer) {
        DataInputDeserializer input = new DataInputDeserializer(bytes, 0, bytes.length);
        try {
            return statisticsSerializer.deserialize(input);
        } catch (IOException e) {
            throw new UncheckedIOException("Fail to deserialize data statistics", e);
        }
    }
}
