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 org.apache.xmlrpc.XmlRpcException;
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.OvsDeleteFlowCommand;
  import com.cloud.hypervisor.xenserver.resource.CitrixResourceBase;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  import com.xensource.xenapi.Connection;
  import com.xensource.xenapi.Network;
  import com.xensource.xenapi.Types.BadServerResponse;
  import com.xensource.xenapi.Types.XenAPIException;
  
  @ResourceWrapper(handles =  OvsDeleteFlowCommand.class)
  public final class CitrixOvsDeleteFlowCommandWrapper extends CommandWrapper<OvsDeleteFlowCommand, Answer, CitrixResourceBase> {
  
  
      @Override
      public Answer execute(final OvsDeleteFlowCommand command, final CitrixResourceBase citrixResourceBase) {
          citrixResourceBase.setIsOvs(true);
  
          final Connection conn = citrixResourceBase.getConnection();
          try {
              final Network nw = citrixResourceBase.setupvSwitchNetwork(conn);
              final String bridge = nw.getBridge(conn);
              final String result = citrixResourceBase.callHostPlugin(conn, "ovsgre", "ovs_delete_flow", "bridge", bridge, "vmName", command.getVmName());
  
              if (result.equalsIgnoreCase("SUCCESS")) {
                  return new Answer(command, true, "success to delete flows for " + command.getVmName());
              } else {
                  return new Answer(command, false, result);
              }
          } catch (final BadServerResponse e) {
              logger.error("Failed to delete flow", e);
          } catch (final XenAPIException e) {
              logger.error("Failed to delete flow", e);
          } catch (final XmlRpcException e) {
              logger.error("Failed to delete flow", e);
          }
          return new Answer(command, false, "failed to delete flow for " + command.getVmName());
      }
  }
  