| /* |
| * |
| * 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.stress.generate.values; |
| |
| import java.io.Serializable; |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.stress.generate.Distribution; |
| import org.apache.cassandra.stress.generate.DistributionFactory; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| import org.apache.cassandra.utils.MurmurHash; |
| |
| public class GeneratorConfig implements Serializable |
| { |
| public final long salt; |
| |
| private final DistributionFactory clusteringDistributions; |
| private final DistributionFactory sizeDistributions; |
| private final DistributionFactory identityDistributions; |
| |
| public GeneratorConfig(String seedStr, DistributionFactory clusteringDistributions, DistributionFactory sizeDistributions, DistributionFactory identityDistributions) |
| { |
| this.clusteringDistributions = clusteringDistributions; |
| this.sizeDistributions = sizeDistributions; |
| this.identityDistributions = identityDistributions; |
| ByteBuffer buf = ByteBufferUtil.bytes(seedStr); |
| long[] hash = new long[2]; |
| MurmurHash.hash3_x64_128(buf, buf.position(), buf.remaining(), 0, hash); |
| salt = hash[0]; |
| } |
| |
| Distribution getClusteringDistribution(DistributionFactory deflt) |
| { |
| return (clusteringDistributions == null ? deflt : clusteringDistributions).get(); |
| } |
| |
| Distribution getIdentityDistribution(DistributionFactory deflt) |
| { |
| return (identityDistributions == null ? deflt : identityDistributions).get(); |
| } |
| |
| Distribution getSizeDistribution(DistributionFactory deflt) |
| { |
| return (sizeDistributions == null ? deflt : sizeDistributions).get(); |
| } |
| |
| } |