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 java.util.Collections;
  11 import java.util.Locale;
  12 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  13 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  14 import org.opendaylight.genius.datastoreutils.hwvtep.HwvtepClusteredDataTreeChangeListener;
  15 import org.opendaylight.genius.utils.batching.ResourceBatchingManager;
  16 import org.opendaylight.genius.utils.hwvtep.HwvtepUtils;
  17 import org.opendaylight.netvirt.elan.l2gw.utils.ElanL2GatewayUtils;
  18 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  19 import org.opendaylight.netvirt.elanmanager.utils.ElanL2GwCacheUtils;
  20 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LocalUcastMacs;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LogicalSwitches;
  25 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 /**
  31  * A listener for Ucast MAC entries that are added/removed to/from an External
  32  * Device (e.g., TOR).
  33  *
  34  * <p>When a Ucast MAC addr appears in the hwvtep's operational DS, that MAC must
  35  * be populated in DMAC tables in all Elan participating DPNs. ELAN is selected
  36  * according to field 'tunnel_key' of the Logical Switch to which the new MAC
  37  * belongs.
  38  */
  39 public class HwvtepLocalUcastMacListener extends
  40         HwvtepClusteredDataTreeChangeListener<LocalUcastMacs, HwvtepLocalUcastMacListener> {
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(HwvtepLocalUcastMacListener.class);
  43
  44     private final DataBroker broker;
  45     private final ElanL2GatewayUtils elanL2GatewayUtils;
  46
  47     public HwvtepLocalUcastMacListener(DataBroker broker, ElanL2GatewayUtils elanL2GatewayUtils) {
  48         super(LocalUcastMacs.class, HwvtepLocalUcastMacListener.class);
  49
  50         this.broker = broker;
  51         this.elanL2GatewayUtils = elanL2GatewayUtils;
  52         ResourceBatchingManager.getInstance().registerDefaultBatchHandlers(this.broker);
  53     }
  54
  55     public void init() {
  56         registerListener(LogicalDatastoreType.OPERATIONAL, broker);
  57     }
  58
  59     @Override
  60     protected void removed(InstanceIdentifier<LocalUcastMacs> identifier, LocalUcastMacs macRemoved) {
  61         String hwvtepNodeId = identifier.firstKeyOf(Node.class).getNodeId().getValue();
  62         String macAddress = macRemoved.getMacEntryKey().getValue().toLowerCase(Locale.getDefault());
  63
  64         LOG.trace("LocalUcastMacs {} removed from {}", macAddress, hwvtepNodeId);
  65
  66         String elanName = getElanName(macRemoved);
  67         ElanInstance elan = ElanUtils.getElanInstanceByName(broker, elanName);
  68
  69         L2GatewayDevice elanL2GwDevice = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanName, hwvtepNodeId);
  70         if (elanL2GwDevice == null) {
  71             LOG.warn("Could not find L2GatewayDevice for ELAN: {}, nodeID:{} from cache", elanName, hwvtepNodeId);
  72             return;
  73         }
  74
  75         // Remove MAC from cache
  76         elanL2GwDevice.removeUcastLocalMac(macRemoved);
  77
  78         elanL2GatewayUtils.unInstallL2GwUcastMacFromElan(elan, elanL2GwDevice,
  79                 Collections.singletonList(new MacAddress(macAddress.toLowerCase(Locale.getDefault()))));
  80     }
  81
  82     protected String getElanName(LocalUcastMacs mac) {
  83         return mac.getLogicalSwitchRef().getValue()
  84                 .firstKeyOf(LogicalSwitches.class).getHwvtepNodeName().getValue();
  85     }
  86
  87     @Override
  88     protected void updated(InstanceIdentifier<LocalUcastMacs> identifier, LocalUcastMacs original,
  89             LocalUcastMacs update) {
  90         // TODO (eperefr) what can change here?
  91
  92     }
  93
  94     @Override
  95     public void added(InstanceIdentifier<LocalUcastMacs> identifier, LocalUcastMacs macAdded) {
  96         String hwvtepNodeId = identifier.firstKeyOf(Node.class).getNodeId().getValue();
  97         String macAddress = macAdded.getMacEntryKey().getValue().toLowerCase(Locale.getDefault());
  98
  99         LOG.trace("LocalUcastMacs {} added to {}", macAddress, hwvtepNodeId);
 100
 101         String elanName = getElanName(macAdded);
 102         ElanInstance elan = ElanUtils.getElanInstanceByName(broker, elanName);
 103         if (elan == null) {
 104             LOG.warn("Could not find ELAN for mac {} being added", macAddress);
 105             return;
 106         }
 107
 108         L2GatewayDevice elanL2GwDevice = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanName, hwvtepNodeId);
 109         if (elanL2GwDevice == null) {
 110             LOG.warn("Could not find L2GatewayDevice for ELAN: {}, nodeID:{} from cache", elanName, hwvtepNodeId);
 111             return;
 112         }
 113
 114         // Cache MAC for furthur processing later
 115         elanL2GwDevice.addUcastLocalMac(macAdded);
 116
 117         elanL2GatewayUtils.installL2GwUcastMacInElan(elan, elanL2GwDevice, macAddress.toLowerCase(Locale.getDefault()),
 118                 macAdded, null);
 119     }
 120
 121     @Override
 122     protected InstanceIdentifier<LocalUcastMacs> getWildCardPath() {
 123         return HwvtepUtils.getWildCardPathForLocalUcastMacs();
 124     }
 125
 126     @Override
 127     protected HwvtepLocalUcastMacListener getDataTreeChangeListener() {
 128         return this;
 129     }
 130 }