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 com.cloud.network.rules;
  
  import java.util.List;
  
  import org.apache.cloudstack.network.topology.NetworkTopologyVisitor;
  
  import com.cloud.dc.DataCenter;
  import com.cloud.exception.ResourceUnavailableException;
  import com.cloud.network.RemoteAccessVpn;
  import com.cloud.network.VpnUser;
  import com.cloud.network.router.VirtualRouter;
  import com.cloud.network.vpc.Vpc;
  import com.cloud.network.vpc.dao.VpcDao;
  import com.cloud.vm.VirtualMachine.State;
  
  public class AdvancedVpnRules extends BasicVpnRules {
  
  
      private final RemoteAccessVpn _remoteAccessVpn;
  
      public AdvancedVpnRules(final RemoteAccessVpn remoteAccessVpn, final List<? extends VpnUser> users) {
          super(null, users);
          _remoteAccessVpn = remoteAccessVpn;
      }
  
      @Override
      public boolean accept(final NetworkTopologyVisitor visitor, final VirtualRouter router) throws ResourceUnavailableException {
          _router = router;
  
          VpcDao vpcDao = visitor.getVirtualNetworkApplianceFactory().getVpcDao();
          Vpc vpc = vpcDao.findById(_remoteAccessVpn.getVpcId());
  
          if (_router.getState() != State.Running) {
              logger.warn("Failed to add/remove Remote Access VPN users: router not in running state");
              throw new ResourceUnavailableException("Failed to add/remove Remote Access VPN users: router not in running state: " + router.getState(), DataCenter.class,
                      vpc.getZoneId());
          }
  
          return visitor.visit(this);
      }
  }
  