interfacemgr/interfacemgr-impl/src/main/java/org/opendaylight/vpnservice/interfacemgr/servicebindings/flowbased/statehelpers/FlowBasedServicesStateUnbindHelper.java

   1 /*
   2  * Copyright (c) 2015 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.vpnservice.interfacemgr.servicebindings.flowbased.statehelpers;
   9
  10 import com.google.common.util.concurrent.ListenableFuture;
  11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  12 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  13 import org.opendaylight.vpnservice.interfacemgr.IfmUtil;
  14 import org.opendaylight.vpnservice.interfacemgr.commons.InterfaceManagerCommonUtils;
  15 import org.opendaylight.vpnservice.interfacemgr.servicebindings.flowbased.utilities.FlowBasedServicesUtils;
  16 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
  17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.ServicesInfo;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.services.info.BoundServices;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 import java.math.BigInteger;
  25 import java.util.ArrayList;
  26 import java.util.List;
  27
  28 public class FlowBasedServicesStateUnbindHelper {
  29     private static final Logger LOG = LoggerFactory.getLogger(FlowBasedServicesStateUnbindHelper.class);
  30
  31     public static List<ListenableFuture<Void>> unbindServicesFromInterface(Interface ifaceState,
  32                                                                            DataBroker dataBroker) {
  33         List<ListenableFuture<Void>> futures = new ArrayList<>();
  34         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  35
  36         ServicesInfo servicesInfo = FlowBasedServicesUtils.getServicesInfoForInterface(ifaceState.getName(), dataBroker);
  37         if (servicesInfo == null) {
  38             return futures;
  39         }
  40
  41         List<BoundServices> allServices = servicesInfo.getBoundServices();
  42         if (allServices == null || allServices.isEmpty()) {
  43             return futures;
  44         }
  45
  46         BoundServices highestPriorityBoundService = null;
  47         short highestPriority = 0xFF;
  48         for (BoundServices boundService : allServices) {
  49             if (boundService.getServicePriority() < highestPriority) {
  50                 highestPriorityBoundService = boundService;
  51                 highestPriority = boundService.getServicePriority();
  52             }
  53         }
  54
  55         InterfaceKey interfaceKey = new InterfaceKey(ifaceState.getName());
  56         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface iface =
  57                 InterfaceManagerCommonUtils.getInterfaceFromConfigDS(interfaceKey, dataBroker);
  58
  59         NodeConnectorId nodeConnectorId = FlowBasedServicesUtils.getNodeConnectorIdFromInterface(iface, dataBroker);
  60         if(nodeConnectorId == null){
  61             return futures;
  62         }
  63         BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
  64         FlowBasedServicesUtils.removeIngressFlow(iface, highestPriorityBoundService, dpId, t);
  65
  66         for (BoundServices boundService : allServices) {
  67             if (!boundService.equals(highestPriorityBoundService)) {
  68                 FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface, boundService, t);
  69             }
  70         }
  71
  72         return futures;
  73     }
  74 }