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