org.redisson.misc.Hash.java Source code

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Here is the source code for org.redisson.misc.Hash.java

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/**
 * Copyright 2016 Nikita Koksharov
 *
 * 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.
 */
package org.redisson.misc;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.handler.codec.base64.Base64;
import io.netty.util.CharsetUtil;
import net.openhft.hashing.LongHashFunction;

public class Hash {

    private Hash() {
    }

    public static byte[] hash(byte[] objectState) {
        long h1 = LongHashFunction.farmUo().hashBytes(objectState);
        long h2 = LongHashFunction.xx_r39().hashBytes(objectState);

        ByteBuf buf = Unpooled.buffer((2 * Long.SIZE) / Byte.SIZE).writeLong(h1).writeLong(h2);
        try {
            return buf.array();
        } finally {
            buf.release();
        }
    }

    public static String hashToBase64(byte[] objectState) {
        long h1 = LongHashFunction.farmUo().hashBytes(objectState);
        long h2 = LongHashFunction.xx_r39().hashBytes(objectState);

        ByteBuf buf = Unpooled.buffer((2 * Long.SIZE) / Byte.SIZE).writeLong(h1).writeLong(h2);

        ByteBuf b = Base64.encode(buf);
        String s = b.toString(CharsetUtil.UTF_8);
        b.release();
        buf.release();
        return s.substring(0, s.length() - 2);
    }

}