natservice/impl/src/main/java/org/opendaylight/netvirt/natservice/internal/SubnetGwMacChangeListener.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
   9 package org.opendaylight.netvirt.natservice.internal;
  10
  11 import java.net.Inet6Address;
  12 import java.net.InetAddress;
  13 import java.net.UnknownHostException;
  14 import javax.annotation.PreDestroy;
  15 import javax.inject.Inject;
  16 import javax.inject.Singleton;
  17 import org.opendaylight.infrautils.utils.concurrent.Executors;
  18 import org.opendaylight.mdsal.binding.api.DataBroker;
  19 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  20 import org.opendaylight.netvirt.neutronvpn.interfaces.INeutronVpnManager;
  21 import org.opendaylight.serviceutils.tools.listener.AbstractAsyncDataTreeChangeListener;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.LearntVpnVipToPortData;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.learnt.vpn.vip.to.port.data.LearntVpnVipToPort;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 @Singleton
  32 public class SubnetGwMacChangeListener extends AbstractAsyncDataTreeChangeListener<LearntVpnVipToPort> {
  33     private static final Logger LOG = LoggerFactory.getLogger(SubnetGwMacChangeListener.class);
  34
  35     private final DataBroker broker;
  36     private final INeutronVpnManager nvpnManager;
  37     private final ExternalNetworkGroupInstaller extNetworkInstaller;
  38
  39     @Inject
  40     public SubnetGwMacChangeListener(final DataBroker broker, final INeutronVpnManager nvpnManager,
  41                                      final ExternalNetworkGroupInstaller extNetworkInstaller) {
  42         super(broker, LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.create(LearntVpnVipToPortData.class)
  43                 .child(LearntVpnVipToPort.class),
  44                 Executors.newListeningSingleThreadExecutor("SubnetGwMacChangeListener", LOG));
  45         this.broker = broker;
  46         this.nvpnManager = nvpnManager;
  47         this.extNetworkInstaller = extNetworkInstaller;
  48     }
  49
  50     public void init() {
  51         LOG.info("{} init", getClass().getSimpleName());
  52     }
  53
  54     @Override
  55     @PreDestroy
  56     public void close() {
  57         super.close();
  58         Executors.shutdownAndAwaitTermination(getExecutorService());
  59     }
  60
  61     @Override
  62     public void remove(InstanceIdentifier<LearntVpnVipToPort> key, LearntVpnVipToPort learntVpnVipToPort) {
  63     }
  64
  65     @Override
  66     public void update(InstanceIdentifier<LearntVpnVipToPort> key, LearntVpnVipToPort origLearntVpnVipToPort,
  67                           LearntVpnVipToPort updatedLearntVpnVipToPort) {
  68         handleSubnetGwIpChange(updatedLearntVpnVipToPort);
  69     }
  70
  71     @Override
  72     public void add(InstanceIdentifier<LearntVpnVipToPort> key, LearntVpnVipToPort learntVpnVipToPort) {
  73         handleSubnetGwIpChange(learntVpnVipToPort);
  74     }
  75
  76     private void handleSubnetGwIpChange(LearntVpnVipToPort learntVpnVipToPort) {
  77         String macAddress = learntVpnVipToPort.getMacAddress();
  78         if (macAddress == null) {
  79             LOG.error("handleSubnetGwIpChange : Mac address is null for LearntVpnVipToPort for vpn {} prefix {}",
  80                 learntVpnVipToPort.getVpnName(), learntVpnVipToPort.getPortFixedip());
  81             return;
  82         }
  83
  84         String fixedIp = learntVpnVipToPort.getPortFixedip();
  85         if (fixedIp == null) {
  86             LOG.error("handleSubnetGwIpChange : Fixed ip is null for LearntVpnVipToPort for vpn {}",
  87                 learntVpnVipToPort.getVpnName());
  88             return;
  89         }
  90
  91         try {
  92             InetAddress address = InetAddress.getByName(fixedIp);
  93             if (address instanceof Inet6Address) {
  94                 // TODO: Revisit when IPv6 North-South communication support is added.
  95                 LOG.debug("handleSubnetGwIpChange : Skipping ipv6 address {}.", address);
  96                 return;
  97             }
  98         } catch (UnknownHostException e) {
  99             LOG.warn("handleSubnetGwIpChange : Invalid ip address {}", fixedIp, e);
 100             return;
 101         }
 102
 103         for (Uuid subnetId : nvpnManager.getSubnetIdsForGatewayIp(new IpAddress(new Ipv4Address(fixedIp)))) {
 104             LOG.trace("handleSubnetGwIpChange : Updating MAC resolution on vpn {} for GW ip {} to {}",
 105                     learntVpnVipToPort.getVpnName(), fixedIp, macAddress);
 106             extNetworkInstaller.installExtNetGroupEntries(subnetId, macAddress);
 107         }
 108     }
 109 }