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 backtype.storm.utils;
  
  import backtype.storm.generated.*;
  
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  public class ThriftTopologyUtils {
      public static Set<String> getComponentIds(StormTopology topology) {
          Set<String> ret = new HashSet<>();
          for (StormTopology._Fields f : StormTopology.metaDataMap.keySet()) {
              Map<String, Object> componentMap = (Map<String, Object>) topology.getFieldValue(f);
              ret.addAll(componentMap.keySet());
          }
          return ret;
      }
  
      public static Map<String, Object> getComponents(StormTopology topology) {
          Map<String, Object> ret = new HashMap<>();
          for (StormTopology._Fields f : StormTopology.metaDataMap.keySet()) {
              Map<String, Object> componentMap = (Map<String, Object>) topology.getFieldValue(f);
              ret.putAll(componentMap);
          }
          return ret;
      }
  
      public static ComponentCommon getComponentCommon(StormTopology topology, String componentId) {
          for (StormTopology._Fields f : StormTopology.metaDataMap.keySet()) {
              Map<String, Object> componentMap = (Map<String, Object>) topology.getFieldValue(f);
              if (componentMap.containsKey(componentId)) {
                  Object component = componentMap.get(componentId);
                  if (component instanceof Bolt) {
                      return ((Bolt) component).get_common();
                  }
                  if (component instanceof SpoutSpec) {
                      return ((SpoutSpec) component).get_common();
                  }
                  if (component instanceof StateSpoutSpec) {
                      return ((StateSpoutSpec) component).get_common();
                  }
                  throw new RuntimeException("Unreachable code! No get_common conversion for component " + component);
              }
          }
          throw new IllegalArgumentException("Could not find component common for " + componentId);
      }
  }
  