content: /*
   *
   * 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();
      }
  
      public String getConfigAsString()
      {
          StringBuilder sb = new StringBuilder();
          if (clusteringDistributions != null){
              sb.append(String.format("Clustering: %s;", clusteringDistributions.getConfigAsString()));
          }
          if (sizeDistributions != null){
              sb.append(String.format("Size: %s;", sizeDistributions.getConfigAsString()));
          }
          if (identityDistributions != null){
              sb.append(String.format("Identity: %s;", identityDistributions.getConfigAsString()));
          }
          return sb.toString();
      }
  }
  