vpnservice/elanmanager/elanmanager-impl/src/main/java/org/opendaylight/netvirt/elan/l2gw/listeners/HwvtepLocalUcastMacListener.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.netvirt.elan.l2gw.listeners;
   9
  10 import com.google.common.collect.Lists;
  11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  12 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  13 import org.opendaylight.genius.datastoreutils.hwvtep.HwvtepClusteredDataTreeChangeListener;
  14 import org.opendaylight.genius.utils.hwvtep.HwvtepUtils;
  15 import org.opendaylight.netvirt.elan.l2gw.utils.ElanL2GatewayUtils;
  16 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  17 import org.opendaylight.netvirt.elanmanager.utils.ElanL2GwCacheUtils;
  18 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LocalUcastMacs;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 /**
  27  * A listener for Ucast MAC entries that are added/removed to/from an External
  28  * Device (e.g., TOR).
  29  *
  30  * <p>When a Ucast MAC addr appears in the hwvtep's operational DS, that MAC must
  31  * be populated in DMAC tables in all Elan participating DPNs. ELAN is selected
  32  * according to field 'tunnel_key' of the Logical Switch to which the new MAC
  33  * belongs.
  34  */
  35 public class HwvtepLocalUcastMacListener extends
  36         HwvtepClusteredDataTreeChangeListener<LocalUcastMacs, HwvtepLocalUcastMacListener> implements AutoCloseable {
  37
  38     private static final Logger LOG = LoggerFactory.getLogger(HwvtepLocalUcastMacListener.class);
  39
  40     private final DataBroker broker;
  41     private final ElanL2GatewayUtils elanL2GatewayUtils;
  42
  43     public HwvtepLocalUcastMacListener(DataBroker broker, ElanUtils elanUtils) {
  44         super(LocalUcastMacs.class, HwvtepLocalUcastMacListener.class);
  45
  46         this.broker = broker;
  47         this.elanL2GatewayUtils = elanUtils.getElanL2GatewayUtils();
  48     }
  49
  50     public void init() {
  51         registerListener(LogicalDatastoreType.OPERATIONAL, broker);
  52     }
  53
  54     @Override
  55     protected void removed(InstanceIdentifier<LocalUcastMacs> identifier, LocalUcastMacs macRemoved) {
  56         String hwvtepNodeId = identifier.firstKeyOf(Node.class).getNodeId().getValue();
  57         String macAddress = macRemoved.getMacEntryKey().getValue();
  58
  59         LOG.trace("LocalUcastMacs {} removed from {}", macAddress, hwvtepNodeId);
  60
  61         ElanInstance elan = elanL2GatewayUtils.getElanInstanceForUcastLocalMac(macRemoved);
  62         if (elan == null) {
  63             LOG.warn("Could not find ELAN for mac {} being deleted", macAddress);
  64             return;
  65         }
  66
  67         String elanName = elan.getElanInstanceName();
  68         L2GatewayDevice elanL2GwDevice = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanName, hwvtepNodeId);
  69         if (elanL2GwDevice == null) {
  70             LOG.warn("Could not find L2GatewayDevice for ELAN: {}, nodeID:{} from cache", elanName, hwvtepNodeId);
  71             return;
  72         }
  73
  74         // Remove MAC from cache
  75         elanL2GwDevice.removeUcastLocalMac(macRemoved);
  76
  77         elanL2GatewayUtils.unInstallL2GwUcastMacFromElan(elan, elanL2GwDevice,
  78                 Lists.newArrayList(macRemoved.getMacEntryKey()));
  79     }
  80
  81     @Override
  82     protected void updated(InstanceIdentifier<LocalUcastMacs> identifier, LocalUcastMacs original,
  83             LocalUcastMacs update) {
  84         // TODO (eperefr) what can change here?
  85
  86     }
  87
  88     @Override
  89     protected void added(InstanceIdentifier<LocalUcastMacs> identifier, LocalUcastMacs macAdded) {
  90         String hwvtepNodeId = identifier.firstKeyOf(Node.class).getNodeId().getValue();
  91         String macAddress = macAdded.getMacEntryKey().getValue();
  92
  93         LOG.trace("LocalUcastMacs {} added to {}", macAddress, hwvtepNodeId);
  94
  95         ElanInstance elan = elanL2GatewayUtils.getElanInstanceForUcastLocalMac(macAdded);
  96         if (elan == null) {
  97             LOG.warn("Could not find ELAN for mac {} being added", macAddress);
  98             return;
  99         }
 100
 101         String elanName = elan.getElanInstanceName();
 102         L2GatewayDevice elanL2GwDevice = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanName, hwvtepNodeId);
 103         if (elanL2GwDevice == null) {
 104             LOG.warn("Could not find L2GatewayDevice for ELAN: {}, nodeID:{} from cache", elanName, hwvtepNodeId);
 105             return;
 106         }
 107
 108         // Cache MAC for furthur processing later
 109         elanL2GwDevice.addUcastLocalMac(macAdded);
 110
 111         elanL2GatewayUtils.installL2GwUcastMacInElan(elan, elanL2GwDevice, macAddress, null);
 112     }
 113
 114     @Override
 115     protected InstanceIdentifier<LocalUcastMacs> getWildCardPath() {
 116         return HwvtepUtils.getWildCardPathForLocalUcastMacs();
 117     }
 118
 119     @Override
 120     protected HwvtepLocalUcastMacListener getDataTreeChangeListener() {
 121         return this;
 122     }
 123 }