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 java.math.BigInteger;
  11 import java.util.ArrayList;
  12 import java.util.Collections;
  13 import java.util.Comparator;
  14 import java.util.List;
  15
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  18 import org.opendaylight.vpnservice.interfacemgr.IfmConstants;
  19 import org.opendaylight.vpnservice.interfacemgr.IfmUtil;
  20 import org.opendaylight.vpnservice.interfacemgr.servicebindings.flowbased.utilities.FlowBasedServicesUtils;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.L2vlan;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.Tunnel;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.ServicesInfo;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.services.info.BoundServices;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 import com.google.common.util.concurrent.ListenableFuture;
  31
  32 public class FlowBasedServicesStateUnbindHelper {
  33     private static final Logger LOG = LoggerFactory.getLogger(FlowBasedServicesStateUnbindHelper.class);
  34
  35     public static List<ListenableFuture<Void>> unbindServicesFromInterface(Interface ifaceState,
  36                                                                            DataBroker dataBroker) {
  37         List<ListenableFuture<Void>> futures = new ArrayList<>();
  38
  39         ServicesInfo servicesInfo = FlowBasedServicesUtils.getServicesInfoForInterface(ifaceState.getName(), dataBroker);
  40         if (servicesInfo == null) {
  41             return futures;
  42         }
  43
  44         List<BoundServices> allServices = servicesInfo.getBoundServices();
  45         if (allServices == null || allServices.isEmpty()) {
  46             return futures;
  47         }
  48
  49         if (ifaceState.getType().isAssignableFrom(L2vlan.class)) {
  50             return unbindServiceOnVlan(allServices, ifaceState, ifaceState.getIfIndex(), dataBroker);
  51         } else if (ifaceState.getType().isAssignableFrom(Tunnel.class)){
  52              return unbindServiceOnTunnel(allServices, ifaceState, ifaceState.getIfIndex(), dataBroker);
  53         }
  54         return futures;
  55     }
  56
  57     private static List<ListenableFuture<Void>> unbindServiceOnTunnel(
  58             List<BoundServices> allServices,
  59             Interface iface,
  60             Integer ifIndex, DataBroker dataBroker) {
  61         List<ListenableFuture<Void>> futures = new ArrayList<>();
  62         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  63
  64         List<String> ofportIds = iface.getLowerLayerIf();
  65         NodeConnectorId nodeConnectorId = new NodeConnectorId(ofportIds.get(0));
  66         if(nodeConnectorId == null){
  67             return futures;
  68         }
  69         BoundServices highestPriorityBoundService = FlowBasedServicesUtils.getHighestPriorityService(allServices);
  70
  71         BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
  72         FlowBasedServicesUtils.removeIngressFlow(iface.getName(), highestPriorityBoundService, dpId, t);
  73
  74         for (BoundServices boundService : allServices) {
  75             if (!boundService.equals(highestPriorityBoundService)) {
  76                 FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface.getName(), boundService, t, boundService.getServicePriority());
  77             }
  78         }
  79
  80         futures.add(t.submit());
  81         return futures;
  82     }
  83
  84     private static List<ListenableFuture<Void>> unbindServiceOnVlan(
  85             List<BoundServices> allServices, Interface ifaceState,
  86             Integer ifIndex, DataBroker dataBroker) {
  87         List<ListenableFuture<Void>> futures = new ArrayList<>();
  88         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  89         List<String> ofportIds = ifaceState.getLowerLayerIf();
  90         NodeConnectorId nodeConnectorId = new NodeConnectorId(ofportIds.get(0));
  91         if(nodeConnectorId == null){
  92             return futures;
  93         }
  94         BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
  95         Collections.sort(allServices, new Comparator<BoundServices>() {
  96             @Override
  97             public int compare(BoundServices serviceInfo1, BoundServices serviceInfo2) {
  98                 return serviceInfo1.getServicePriority().compareTo(serviceInfo2.getServicePriority());
  99             }
 100         });
 101         BoundServices highestPriority = allServices.remove(0);
 102         FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, ifaceState.getName(), highestPriority, t, IfmConstants.DEFAULT_SERVICE_INDEX);
 103         for (BoundServices boundService : allServices) {
 104                 FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, ifaceState.getName(), boundService, t, boundService.getServicePriority());
 105         }
 106         futures.add(t.submit());
 107         return futures;
 108
 109     }
 110
 111 }