adapters/base/src/main/java/org/apache/cassandra/sidecar/adapters/base/Partitioner.java

/*
 * 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.cassandra.sidecar.adapters.base;

import java.math.BigInteger;

/**
 * Represents types of Partitioners supported and the corresponding starting token values
 */
public enum Partitioner
{
    Murmur3(BigInteger.valueOf(Long.MIN_VALUE), BigInteger.valueOf(Long.MAX_VALUE)),
    Random(BigInteger.ONE.negate(), BigInteger.valueOf(2).pow(127));

    public final BigInteger minToken;
    public final BigInteger maxToken;

    Partitioner(BigInteger minToken, BigInteger maxToken)
    {
        this.minToken = minToken;
        this.maxToken = maxToken;
    }

    public static Partitioner fromClassName(String className)
    {
        switch (className)
        {
            case "org.apache.cassandra.dht.Murmur3Partitioner":
                return Murmur3;
            case "org.apache.cassandra.dht.RandomPartitioner":
                return Random;
            default:
                throw new UnsupportedOperationException("Unexpected partitioner: " + className);
        }
    }
}