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.hypervisor.xenserver.resource;
  
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.LogManager;
  import org.apache.xmlrpc.XmlRpcException;
  
  import com.xensource.xenapi.Connection;
  import com.xensource.xenapi.Network;
  import com.xensource.xenapi.PIF;
  import com.xensource.xenapi.Types.XenAPIException;
  
  /**
   * XsNic represents a network and the host's specific PIF.
   */
  public class XsLocalNetwork {
  
      protected Logger logger = LogManager.getLogger(getClass());
  
      private final CitrixResourceBase _citrixResourceBase;
      private final Network _n;
      private Network.Record _nr;
      private PIF _p;
      private PIF.Record _pr;
  
      public XsLocalNetwork(final CitrixResourceBase citrixResourceBase, final Network n) {
          this(citrixResourceBase, n, null, null, null);
      }
  
      public XsLocalNetwork(final CitrixResourceBase citrixResourceBase, final Network n, final Network.Record nr, final PIF p, final PIF.Record pr) {
          _citrixResourceBase = citrixResourceBase;
          _n = n;
          _nr = nr;
          _p = p;
          _pr = pr;
      }
  
      public Network getNetwork() {
          return _n;
      }
  
      public Network.Record getNetworkRecord(final Connection conn) throws XenAPIException, XmlRpcException {
          if (_nr == null) {
              _nr = _n.getRecord(conn);
          }
  
          return _nr;
      }
  
      public PIF getPif(final Connection conn) throws XenAPIException, XmlRpcException {
          if (_p == null) {
              final Network.Record nr = getNetworkRecord(conn);
              for (final PIF pif : nr.PIFs) {
                  final PIF.Record pr = pif.getRecord(conn);
                  if (_citrixResourceBase.getHost().getUuid().equals(pr.host.getUuid(conn))) {
                      if (logger.isDebugEnabled()) {
                          logger.debug("Found a network called " + nr.nameLabel + " on host=" + _citrixResourceBase.getHost().getIp() + ";  Network=" + nr.uuid + "; pif=" + pr.uuid);
                      }
                      _p = pif;
                      _pr = pr;
                      break;
                  }
              }
          }
          return _p;
      }
  
      public PIF.Record getPifRecord(final Connection conn) throws XenAPIException, XmlRpcException {
          if (_pr == null) {
              final PIF p = getPif(conn);
              if (_pr == null) {
                  _pr = p.getRecord(conn);
              }
          }
          return _pr;
      }
  }
  