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.wrapper.xenbase;
  
  import java.util.Iterator;
  
  import org.apache.xmlrpc.XmlRpcException;
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.MaintainAnswer;
  import com.cloud.agent.api.MaintainCommand;
  import com.cloud.hypervisor.xenserver.resource.CitrixResourceBase;
  import com.cloud.hypervisor.xenserver.resource.XsHost;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  import com.xensource.xenapi.Connection;
  import com.xensource.xenapi.Host;
  import com.xensource.xenapi.Types.XenAPIException;
  
  @ResourceWrapper(handles =  MaintainCommand.class)
  public final class CitrixMaintainCommandWrapper extends CommandWrapper<MaintainCommand, Answer, CitrixResourceBase> {
  
  
      @Override
      public Answer execute(final MaintainCommand command, final CitrixResourceBase citrixResourceBase) {
          final Connection conn = citrixResourceBase.getConnection();
          try {
  
              final XsHost xsHost = citrixResourceBase.getHost();
              final String uuid = xsHost.getUuid();
              final Host host = Host.getByUuid(conn, uuid);
              // remove all tags cloud stack
              final Host.Record hr = host.getRecord(conn);
  
              // Adding this check because could not get the mock to work. Will push the code and fix it afterwards.
              if (hr == null) {
                  logger.warn("Host.Record is null.");
                  return new MaintainAnswer(command, false, "Host.Record is null");
              }
  
              final Iterator<String> it = hr.tags.iterator();
              while (it.hasNext()) {
                  final String tag = it.next();
                  if (tag.contains("cloud")) {
                      it.remove();
                  }
              }
              host.setTags(conn, hr.tags);
              return new MaintainAnswer(command);
          } catch (final XenAPIException e) {
              logger.warn("Unable to put server in maintainence mode", e);
              return new MaintainAnswer(command, false, e.getMessage());
          } catch (final XmlRpcException e) {
              logger.warn("Unable to put server in maintainence mode", e);
              return new MaintainAnswer(command, false, e.getMessage());
          }
      }
  }
  