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.activemq.plugin;
  
  import org.apache.activemq.broker.region.policy.PolicyEntry;
  import org.apache.activemq.broker.region.policy.PolicyMap;
  import org.apache.activemq.plugin.util.PolicyEntryUtil;
  
  public class PolicyEntryProcessor extends DefaultConfigurationProcessor {
  
      public PolicyEntryProcessor(RuntimeConfigurationBroker plugin, Class<?> configurationClass) {
          super(plugin, configurationClass);
      }
  
      @Override
      public void addNew(Object o) {
          PolicyEntry addition = fromDto(o, new PolicyEntry());
          PolicyMap existingMap = plugin.getBrokerService().getDestinationPolicy();
          existingMap.put(addition.getDestination(), addition);
          applyRetrospectively(addition);
          plugin.info("added policy for: " + addition.getDestination());
      }
  
      @Override
      public void modify(Object existing, Object candidate) {
          PolicyEntry updatedEntry = fromDto(candidate, new PolicyEntry());
  
          //Look up an existing entry that matches the candidate
          //First just look up by the destination type to see if anything matches
          PolicyEntry existingEntry = PolicyEntryUtil.findEntryByDestination(plugin, updatedEntry);
          if (existingEntry != null) {
              //if found, update the policy and apply the updates to existing destinations
              updatedEntry = fromDto(candidate, existingEntry);
              applyRetrospectively(updatedEntry);
              plugin.info("updated policy for: " + updatedEntry.getDestination());
          } else {
              plugin.info("cannot find policy entry candidate to update: " + updatedEntry + ", destination:" + updatedEntry.getDestination());
          }
      }
  
      protected void applyRetrospectively(PolicyEntry updatedEntry) {
          PolicyEntryUtil.applyRetrospectively(plugin, updatedEntry);
      }
  }
  