interfacemanager/interfacemanager-impl/src/main/java/org/opendaylight/genius/interfacemanager/servicebindings/flowbased/statehelpers/FlowBasedServicesStateUnbindHelper.java

   1 /*
   2  * Copyright (c) 2016 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.genius.interfacemanager.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.genius.interfacemanager.IfmConstants;
  14 import org.opendaylight.genius.interfacemanager.IfmUtil;
  15 import org.opendaylight.genius.interfacemanager.servicebindings.flowbased.utilities.FlowBasedServicesUtils;
  16 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.L2vlan;
  17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.Tunnel;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.ServiceModeBase;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.ServicesInfo;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.services.info.BoundServices;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 import java.math.BigInteger;
  27 import java.util.ArrayList;
  28 import java.util.Collections;
  29 import java.util.Comparator;
  30 import java.util.List;
  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, Class<? extends ServiceModeBase> serviceMode,
  36                                                                            DataBroker dataBroker) {
  37         List<ListenableFuture<Void>> futures = new ArrayList<>();
  38         LOG.debug("unbinding services on interface {}", ifaceState.getName());
  39         ServicesInfo servicesInfo = FlowBasedServicesUtils.getServicesInfoForInterface(ifaceState.getName(), serviceMode, dataBroker);
  40         if (servicesInfo == null) {
  41             LOG.trace("service info is null for interface {}", ifaceState.getName());
  42             return futures;
  43         }
  44
  45         List<BoundServices> allServices = servicesInfo.getBoundServices();
  46         if (allServices == null || allServices.isEmpty()) {
  47             LOG.trace("bound services is empty for interface {}", ifaceState.getName());
  48             return futures;
  49         }
  50
  51         if(ifaceState.getType() == null) {
  52             return futures;
  53         }
  54
  55         if (ifaceState.getType().isAssignableFrom(L2vlan.class)) {
  56             return unbindServiceOnVlan(allServices, ifaceState, ifaceState.getIfIndex(), dataBroker);
  57         } else if (ifaceState.getType().isAssignableFrom(Tunnel.class)){
  58             return unbindServiceOnTunnel(allServices, ifaceState, ifaceState.getIfIndex(), dataBroker);
  59         }
  60         return futures;
  61     }
  62
  63     private static List<ListenableFuture<Void>> unbindServiceOnTunnel(
  64             List<BoundServices> allServices,
  65             Interface iface,
  66             Integer ifIndex, DataBroker dataBroker) {
  67         List<ListenableFuture<Void>> futures = new ArrayList<>();
  68         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  69
  70         List<String> ofportIds = iface.getLowerLayerIf();
  71         NodeConnectorId nodeConnectorId = new NodeConnectorId(ofportIds.get(0));
  72         if(nodeConnectorId == null){
  73             return futures;
  74         }
  75         BoundServices highestPriorityBoundService = FlowBasedServicesUtils.getHighestPriorityService(allServices);
  76
  77         BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
  78         FlowBasedServicesUtils.removeIngressFlow(iface.getName(), highestPriorityBoundService, dpId, t);
  79
  80         for (BoundServices boundService : allServices) {
  81             if (!boundService.equals(highestPriorityBoundService)) {
  82                 FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface.getName(), boundService, t, boundService.getServicePriority());
  83             }
  84         }
  85
  86         futures.add(t.submit());
  87         return futures;
  88     }
  89
  90     private static List<ListenableFuture<Void>> unbindServiceOnVlan(
  91             List<BoundServices> allServices, Interface ifaceState,
  92             Integer ifIndex, DataBroker dataBroker) {
  93         List<ListenableFuture<Void>> futures = new ArrayList<>();
  94         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  95         List<String> ofportIds = ifaceState.getLowerLayerIf();
  96         NodeConnectorId nodeConnectorId = new NodeConnectorId(ofportIds.get(0));
  97         if(nodeConnectorId == null){
  98             return futures;
  99         }
 100         BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
 101         Collections.sort(allServices, new Comparator<BoundServices>() {
 102             @Override
 103             public int compare(BoundServices serviceInfo1, BoundServices serviceInfo2) {
 104                 return serviceInfo1.getServicePriority().compareTo(serviceInfo2.getServicePriority());
 105             }
 106         });
 107         BoundServices highestPriority = allServices.remove(0);
 108         FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, ifaceState.getName(), highestPriority, t, IfmConstants.DEFAULT_SERVICE_INDEX);
 109         for (BoundServices boundService : allServices) {
 110             FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, ifaceState.getName(), boundService, t, boundService.getServicePriority());
 111         }
 112         futures.add(t.submit());
 113         return futures;
 114
 115     }
 116
 117 }