vpnservice/vpnmanager/vpnmanager-impl/src/main/java/org/opendaylight/netvirt/vpnmanager/FloatingIpGarpHandler.java

   1 /*
   2  * Copyright (c) 2016 Hewlett Packard Enterprise, Co. 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.netvirt.vpnmanager;
   9
  10 import com.google.common.net.InetAddresses;
  11 import java.math.BigInteger;
  12 import java.util.Collection;
  13 import java.util.concurrent.ExecutionException;
  14 import java.util.concurrent.Future;
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  18 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  19 import org.opendaylight.netvirt.elanmanager.api.IElanService;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddressBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.GetPortFromInterfaceInput;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.GetPortFromInterfaceInputBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.GetPortFromInterfaceOutput;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.OdlInterfaceRpcService;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.FloatingIpInfo;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.RouterPorts;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.Ports;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.ports.IpMapping;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketProcessingService;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
  35 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  36 import org.opendaylight.yangtools.yang.common.RpcResult;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 public class FloatingIpGarpHandler extends AsyncDataTreeChangeListenerBase<RouterPorts, FloatingIpGarpHandler>
  41         implements AutoCloseable {
  42     private static final Logger LOG = LoggerFactory.getLogger(FloatingIpGarpHandler.class);
  43     private final DataBroker dataBroker;
  44     private final PacketProcessingService packetService;
  45     private final IElanService elanService;
  46     private final OdlInterfaceRpcService intfRpc;
  47
  48     public FloatingIpGarpHandler(final DataBroker dataBroker, final PacketProcessingService packetService,
  49                                  final IElanService elanService, final OdlInterfaceRpcService interfaceManager) {
  50         super(RouterPorts.class, FloatingIpGarpHandler.class);
  51         this.dataBroker = dataBroker;
  52         this.packetService = packetService;
  53         this.elanService = elanService;
  54         this.intfRpc = interfaceManager;
  55     }
  56
  57     public void start() {
  58         LOG.info("{} start", getClass().getSimpleName());
  59         registerListener(LogicalDatastoreType.OPERATIONAL, dataBroker);
  60     }
  61
  62     @Override
  63     protected InstanceIdentifier<RouterPorts> getWildCardPath() {
  64         return InstanceIdentifier.create(FloatingIpInfo.class).child(RouterPorts.class);
  65     }
  66
  67     @Override
  68     protected void remove(InstanceIdentifier<RouterPorts> key, RouterPorts dataObjectModification) {
  69     }
  70
  71     @Override
  72     protected void update(InstanceIdentifier<RouterPorts> key, RouterPorts dataObjectModificationBefore,
  73             RouterPorts dataObjectModificationAfter) {
  74         sendGarpForFloatingIps(dataObjectModificationAfter);
  75     }
  76
  77     private void sendGarpForFloatingIps(RouterPorts dataObjectModificationAfter) {
  78         for (Ports port : dataObjectModificationAfter.getPorts()) {
  79             for (IpMapping ipMapping : port.getIpMapping()) {
  80                 IpAddress ip = IpAddressBuilder.getDefaultInstance(ipMapping.getExternalIp());
  81                 sendGarpForIp(dataObjectModificationAfter, ip);
  82             }
  83         }
  84     }
  85
  86     private void sendGarpForIp(RouterPorts dataObjectModificationAfter, IpAddress ip) {
  87         if (ip.getIpv4Address() == null) {
  88             LOG.warn("Faild to send GARP for IP. recieved IPv6.");
  89             return;
  90         }
  91         Port floatingIpPort = VpnUtil.getNeutronPortForFloatingIp(dataBroker, ip);
  92         MacAddress floatingIpMac = floatingIpPort.getMacAddress();
  93         String extNet = VpnUtil.getAssociatedExternalNetwork(dataBroker, dataObjectModificationAfter.getRouterId());
  94         Collection<String> interfaces = elanService.getExternalElanInterfaces(extNet);
  95         for (String externalInterface:interfaces) {
  96             sendGarpOnInterface(ip, floatingIpMac, externalInterface);
  97
  98         }
  99     }
 100
 101     private void sendGarpOnInterface(IpAddress ip, MacAddress floatingIpMac, String externalInterface) {
 102         GetPortFromInterfaceInput getPortFromInterfaceInput = new GetPortFromInterfaceInputBuilder().setIntfName(externalInterface).build();
 103         Future<RpcResult<GetPortFromInterfaceOutput>> interfacePort = intfRpc.getPortFromInterface(getPortFromInterfaceInput);
 104         try {
 105             BigInteger dpId = interfacePort.get().getResult().getDpid();
 106             String portName = interfacePort.get().getResult().getPortname();
 107             NodeConnectorRef ingress = MDSALUtil.getNodeConnRef(dpId, portName);
 108             byte[] ipBytes = InetAddresses.forString(ip.getIpv4Address().getValue()).getAddress();
 109             TransmitPacketInput arpRequestInput = ArpUtils.createArpRequestInput(dpId, ArpUtils.getMacInBytes(floatingIpMac.getValue()), ipBytes, ipBytes, ingress);
 110             packetService.transmitPacket(arpRequestInput);
 111         } catch (InterruptedException e) {
 112             LOG.warn("Faild to send GARP. rpc call getPortFromInterface did not return with a value.");
 113         } catch (ExecutionException e) {
 114             LOG.warn("Faild to send GARP. rpc call getPortFromInterface did not return with a value.");
 115         }
 116     }
 117
 118
 119     @Override
 120     protected void add(InstanceIdentifier<RouterPorts> key, RouterPorts dataObjectModification) {
 121         sendGarpForFloatingIps(dataObjectModification);
 122     }
 123
 124     @Override
 125     protected FloatingIpGarpHandler getDataTreeChangeListener() {
 126         return this;
 127     }
 128 }