content: package org.apache.cassandra.stress.settings;
  /*
   * 
   * 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.
   * 
   */
  
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import static org.apache.cassandra.utils.LocalizeString.toLowerCaseLocalized;
  
  public final class OptionEnumProbabilities<T> extends OptionMulti
  {
      final List<OptMatcher<T>> options;
  
      public static class Opt<T>
      {
          final T option;
          final String defaultValue;
  
          public Opt(T option, String defaultValue)
          {
              this.option = option;
              this.defaultValue = defaultValue;
          }
      }
  
      private static final class OptMatcher<T> extends OptionSimple
      {
          final T opt;
          OptMatcher(T opt, String defaultValue)
          {
              super(toLowerCaseLocalized(opt.toString()) + "=", "[0-9]+(\\.[0-9]+)?", defaultValue, "Performs this many " + opt + " operations out of total", false);
              this.opt = opt;
          }
      }
  
      public OptionEnumProbabilities(List<Opt<T>> universe, String name, String description)
      {
          super(name, description, false);
          List<OptMatcher<T>> options = new ArrayList<>();
          for (Opt<T> option : universe)
              options.add(new OptMatcher<T>(option.option, option.defaultValue));
          this.options = options;
      }
  
      @Override
      public List<? extends Option> options()
      {
          return options;
      }
  
      Map<T, Double> ratios()
      {
          List<? extends Option> ratiosIn = setByUser() ? optionsSetByUser() : defaultOptions();
          Map<T, Double> ratiosOut = new HashMap<>();
          for (Option opt : ratiosIn)
          {
              OptMatcher<T> optMatcher = (OptMatcher<T>) opt;
              double d = Double.parseDouble(optMatcher.value());
              ratiosOut.put(optMatcher.opt, d);
          }
          return ratiosOut;
      }
  }
  
  