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.ArrayList;
  13 import java.util.Collection;
  14 import java.util.List;
  15 import java.util.concurrent.ExecutionException;
  16 import java.util.concurrent.Future;
  17 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  19 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  20 import org.opendaylight.genius.mdsalutil.ActionInfo;
  21 import org.opendaylight.genius.mdsalutil.ActionType;
  22 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  23 import org.opendaylight.netvirt.elanmanager.api.IElanService;
  24 import org.opendaylight.netvirt.vpnmanager.utilities.VpnManagerCounters;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddressBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.Action;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.GetPortFromInterfaceInput;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.GetPortFromInterfaceInputBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.GetPortFromInterfaceOutput;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.OdlInterfaceRpcService;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.*;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.FloatingIpInfo;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.RouterPorts;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.Ports;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.ports.IpMapping;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketProcessingService;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
  42 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  43 import org.opendaylight.yangtools.yang.common.RpcResult;
  44 import org.slf4j.Logger;
  45 import org.slf4j.LoggerFactory;
  46
  47 public class FloatingIpGarpHandler extends AsyncDataTreeChangeListenerBase<RouterPorts, FloatingIpGarpHandler>
  48         implements AutoCloseable {
  49     private static final Logger LOG = LoggerFactory.getLogger(FloatingIpGarpHandler.class);
  50     private final DataBroker dataBroker;
  51     private final PacketProcessingService packetService;
  52     private final IElanService elanService;
  53     private final OdlInterfaceRpcService intfRpc;
  54
  55     public FloatingIpGarpHandler(final DataBroker dataBroker, final PacketProcessingService packetService,
  56                                  final IElanService elanService, final OdlInterfaceRpcService interfaceManager) {
  57         super(RouterPorts.class, FloatingIpGarpHandler.class);
  58         this.dataBroker = dataBroker;
  59         this.packetService = packetService;
  60         this.elanService = elanService;
  61         this.intfRpc = interfaceManager;
  62     }
  63
  64     public void start() {
  65         LOG.info("{} start", getClass().getSimpleName());
  66         registerListener(LogicalDatastoreType.OPERATIONAL, dataBroker);
  67     }
  68
  69     @Override
  70     protected InstanceIdentifier<RouterPorts> getWildCardPath() {
  71         return InstanceIdentifier.create(FloatingIpInfo.class).child(RouterPorts.class);
  72     }
  73
  74     @Override
  75     protected void remove(InstanceIdentifier<RouterPorts> key, RouterPorts dataObjectModification) {
  76     }
  77
  78     @Override
  79     protected void update(InstanceIdentifier<RouterPorts> key, RouterPorts dataObjectModificationBefore,
  80             RouterPorts dataObjectModificationAfter) {
  81         VpnManagerCounters.garp_update_notification.inc();
  82         sendGarpForFloatingIps(dataObjectModificationAfter);
  83     }
  84
  85     private void sendGarpForFloatingIps(RouterPorts dataObjectModificationAfter) {
  86         for (Ports port : dataObjectModificationAfter.getPorts()) {
  87             for (IpMapping ipMapping : port.getIpMapping()) {
  88                 IpAddress ip = IpAddressBuilder.getDefaultInstance(ipMapping.getExternalIp());
  89                 sendGarpForIp(dataObjectModificationAfter, ip);
  90             }
  91         }
  92     }
  93
  94     private void sendGarpForIp(RouterPorts dataObjectModificationAfter, IpAddress ip) {
  95         if (ip.getIpv4Address() == null) {
  96             LOG.warn("Faild to send GARP for IP. recieved IPv6.");
  97             VpnManagerCounters.garp_sent_ipv6.inc();
  98             return;
  99         }
 100         Port floatingIpPort = VpnUtil.getNeutronPortForFloatingIp(dataBroker, ip);
 101         MacAddress floatingIpMac = floatingIpPort.getMacAddress();
 102         String extNet = VpnUtil.getAssociatedExternalNetwork(dataBroker, dataObjectModificationAfter.getRouterId());
 103         Collection<String> interfaces = elanService.getExternalElanInterfaces(extNet);
 104         for (String externalInterface:interfaces) {
 105             sendGarpOnInterface(ip, floatingIpMac, externalInterface);
 106         }
 107     }
 108
 109     private void sendGarpOnInterface(IpAddress ip, MacAddress floatingIpMac, String externalInterface) {
 110         try {
 111             GetPortFromInterfaceInput getPortFromInterfaceInput = new GetPortFromInterfaceInputBuilder()
 112                     .setIntfName(externalInterface).build();
 113             Future<RpcResult<GetPortFromInterfaceOutput>> interfacePort = intfRpc
 114                     .getPortFromInterface(getPortFromInterfaceInput);
 115             if (interfacePort == null || !interfacePort.get().isSuccessful()) {
 116                 VpnManagerCounters.garp_interface_rpc_failed.inc();
 117                 return;
 118             }
 119             BigInteger dpId = interfacePort.get().getResult().getDpid();
 120             String portId = interfacePort.get().getResult().getPortno().toString();
 121             NodeConnectorRef ingress = MDSALUtil.getNodeConnRef(dpId, portId);
 122             byte[] ipBytes = InetAddresses.forString(ip.getIpv4Address().getValue()).getAddress();
 123             List<ActionInfo> actionList = new ArrayList<ActionInfo>();
 124             actionList.add(new ActionInfo(ActionType.output, new String[]{portId}));
 125
 126             byte[] floatingMac = ArpUtils.getMacInBytes(floatingIpMac.getValue());
 127             TransmitPacketInput arpRequestInput = ArpUtils.createArpRequestInput(dpId, null,
 128                     floatingMac, VpnConstants.MAC_Broadcast, ipBytes, ipBytes, ingress, actionList);
 129             packetService.transmitPacket(arpRequestInput);
 130             VpnManagerCounters.garp_sent.inc();
 131         } catch (InterruptedException|ExecutionException e) {
 132             LOG.warn("Faild to send GARP. rpc call getPortFromInterface did not return with a value.");
 133             VpnManagerCounters.garp_sent_failed.inc();
 134         }
 135     }
 136
 137     @Override
 138     protected void add(InstanceIdentifier<RouterPorts> key, RouterPorts dataObjectModification) {
 139         sendGarpForFloatingIps(dataObjectModification);
 140     }
 141
 142     @Override
 143     protected FloatingIpGarpHandler getDataTreeChangeListener() {
 144         return this;
 145     }
 146 }