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.Arrays;
  import java.util.List;
  import java.util.Map;
  
  import com.google.common.base.Function;
  
  import org.apache.cassandra.locator.AbstractReplicationStrategy;
  
  /**
   * For specifying replication options
   */
  class OptionReplication extends OptionMulti
  {
  
      private final OptionSimple strategy = new OptionSimple("strategy=", new StrategyAdapter(), "org.apache.cassandra.locator.SimpleStrategy", "The replication strategy to use", false);
      private final OptionSimple factor = new OptionSimple("factor=", "[0-9]+", "1", "The number of replicas", false);
  
      public OptionReplication()
      {
          super("replication", "Define the replication strategy and any parameters", true);
      }
  
      public String getStrategy()
      {
          return strategy.value();
      }
  
      public Map<String, String> getOptions()
      {
          Map<String, String> options = extraOptions();
          if (!options.containsKey("replication_factor") && (strategy.value().equals("org.apache.cassandra.locator.SimpleStrategy") || factor.setByUser()))
              options.put("replication_factor", factor.value());
          return options;
      }
  
      protected List<? extends Option> options()
      {
          return Arrays.asList(strategy, factor);
      }
  
      @Override
      public boolean happy()
      {
          return true;
      }
  
      private static final class StrategyAdapter implements Function<String, String>
      {
          public String apply(String name)
          {
              String strategy = null;
              for (String fullname : new String[] { name, "org.apache.cassandra.locator." + name })
              {
                  try
                  {
                      Class<?> clazz = Class.forName(fullname);
                      if (!AbstractReplicationStrategy.class.isAssignableFrom(clazz))
                          throw new IllegalArgumentException(clazz + " is not a replication strategy");
                      strategy = fullname;
                      break;
                  } catch (Exception ignore)
                  {
                      // will throw below if strategy is still null
                  }
              }
              if (strategy == null)
                  throw new IllegalArgumentException("Invalid replication strategy: " + name);
              return strategy;
          }
      }
  
  }
  