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.db.guardrails;
  
  import java.util.HashMap;
  import java.util.Map;
  import javax.annotation.Nullable;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import static java.lang.String.format;
  
  public class CustomGuardrailConfig extends HashMap<String, Object>
  {
      private static final Logger logger = LoggerFactory.getLogger(CustomGuardrailConfig.class);
  
      public CustomGuardrailConfig()
      {
          // for snakeyaml
      }
  
      @SuppressWarnings("unchecked")
      public CustomGuardrailConfig(Map<String, ?> p)
      {
          super(p);
      }
  
      public String resolveString(@Nullable String key)
      {
          return resolveString(key, null);
      }
  
      public String resolveString(@Nullable String key, String defaultValue)
      {
          if (key == null)
              return defaultValue;
  
          Object resolvedString = getOrDefault(key, defaultValue);
  
          if (resolvedString == null)
              return null;
          if (resolvedString instanceof String)
              return (String) resolvedString;
  
          return resolvedString.toString();
      }
  
      public int resolveInteger(@Nullable String key, Integer defaultValue)
      {
          if (key == null)
              return defaultValue;
  
          Object resolvedValue = getOrDefault(key, defaultValue.toString());
  
          try
          {
              if (resolvedValue instanceof Integer)
                  return (Integer) resolvedValue;
              if (resolvedValue instanceof String)
                  return Integer.parseInt((String) resolvedValue);
  
              throw new IllegalStateException();
          }
          catch (IllegalStateException | NumberFormatException ex)
          {
              logger.warn(format("Unable to parse value %s of key %s. Value has to be integer. " +
                                 "The default of value %s will be used.",
                                 resolvedValue, key, defaultValue));
          }
          return defaultValue;
      }
  
      public boolean resolveBoolean(@Nullable String key, boolean defaultValue)
      {
          Object value = get(key);
  
          if (value == null)
              return defaultValue;
          if (value instanceof Boolean)
              return (boolean) value;
          if (value instanceof String)
              return Boolean.parseBoolean((String) value);
  
          return defaultValue;
      }
  }
  