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 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.batching.ResourceBatchingManager;
  15 import org.opendaylight.genius.utils.hwvtep.HwvtepNodeHACache;
  16 import org.opendaylight.genius.utils.hwvtep.HwvtepUtils;
  17 import org.opendaylight.netvirt.elan.cache.ElanInstanceCache;
  18 import org.opendaylight.netvirt.elan.l2gw.utils.ElanL2GatewayUtils;
  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.IetfYangUtil;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LocalUcastMacs;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LogicalSwitches;
  26 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 /**
  32  * A listener for Ucast MAC entries that are added/removed to/from an External
  33  * Device (e.g., TOR).
  34  *
  35  * <p>When a Ucast MAC addr appears in the hwvtep's operational DS, that MAC must
  36  * be populated in DMAC tables in all Elan participating DPNs. ELAN is selected
  37  * according to field 'tunnel_key' of the Logical Switch to which the new MAC
  38  * belongs.
  39  */
  40 public class HwvtepLocalUcastMacListener extends
  41         HwvtepClusteredDataTreeChangeListener<LocalUcastMacs, HwvtepLocalUcastMacListener> {
  42
  43     private static final Logger LOG = LoggerFactory.getLogger(HwvtepLocalUcastMacListener.class);
  44
  45     private final DataBroker broker;
  46     private final ElanL2GatewayUtils elanL2GatewayUtils;
  47     private final ElanInstanceCache elanInstanceCache;
  48
  49     public HwvtepLocalUcastMacListener(DataBroker broker, ElanL2GatewayUtils elanL2GatewayUtils,
  50             ElanInstanceCache elanInstanceCache, HwvtepNodeHACache hwvtepNodeHACache) {
  51         super(LocalUcastMacs.class, HwvtepLocalUcastMacListener.class, hwvtepNodeHACache);
  52
  53         this.broker = broker;
  54         this.elanL2GatewayUtils = elanL2GatewayUtils;
  55         this.elanInstanceCache = elanInstanceCache;
  56         ResourceBatchingManager.getInstance().registerDefaultBatchHandlers(this.broker);
  57     }
  58
  59     public void init() {
  60         registerListener(LogicalDatastoreType.OPERATIONAL, broker);
  61     }
  62
  63     @Override
  64     protected void removed(InstanceIdentifier<LocalUcastMacs> identifier, LocalUcastMacs macRemoved) {
  65         String hwvtepNodeId = identifier.firstKeyOf(Node.class).getNodeId().getValue();
  66         MacAddress macAddress = IetfYangUtil.INSTANCE.canonizeMacAddress(macRemoved.getMacEntryKey());
  67
  68         LOG.trace("LocalUcastMacs {} removed from {}", macAddress.getValue(), hwvtepNodeId);
  69
  70         String elanName = getElanName(macRemoved);
  71
  72         L2GatewayDevice elanL2GwDevice = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanName, hwvtepNodeId);
  73         if (elanL2GwDevice == null) {
  74             LOG.warn("Could not find L2GatewayDevice for ELAN: {}, nodeID:{} from cache", elanName, hwvtepNodeId);
  75             return;
  76         }
  77
  78         // Remove MAC from cache
  79         elanL2GwDevice.removeUcastLocalMac(macRemoved);
  80         elanL2GatewayUtils.unInstallL2GwUcastMacFromL2gwDevices(elanName, elanL2GwDevice,
  81                 Collections.singletonList(macAddress));
  82         elanL2GatewayUtils.unInstallL2GwUcastMacFromElanDpns(elanInstanceCache.get(elanName).orNull(),
  83                 elanL2GwDevice, Collections.singletonList(macAddress));
  84     }
  85
  86     protected String getElanName(LocalUcastMacs mac) {
  87         return mac.getLogicalSwitchRef().getValue()
  88                 .firstKeyOf(LogicalSwitches.class).getHwvtepNodeName().getValue();
  89     }
  90
  91     @Override
  92     protected void updated(InstanceIdentifier<LocalUcastMacs> identifier, LocalUcastMacs original,
  93             LocalUcastMacs update) {
  94         // TODO (eperefr) what can change here?
  95
  96     }
  97
  98     @Override
  99     public void added(InstanceIdentifier<LocalUcastMacs> identifier, LocalUcastMacs macAdded) {
 100         String hwvtepNodeId = identifier.firstKeyOf(Node.class).getNodeId().getValue();
 101         String macAddress = IetfYangUtil.INSTANCE.canonizeMacAddress(macAdded.getMacEntryKey()).getValue();
 102
 103         LOG.trace("LocalUcastMacs {} added to {}", macAddress, hwvtepNodeId);
 104
 105         String elanName = getElanName(macAdded);
 106         ElanInstance elan = elanInstanceCache.get(elanName).orNull();
 107         if (elan == null) {
 108             LOG.warn("Could not find ELAN for mac {} being added", macAddress);
 109             return;
 110         }
 111
 112         L2GatewayDevice elanL2GwDevice = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanName, hwvtepNodeId);
 113         if (elanL2GwDevice == null) {
 114             LOG.warn("Could not find L2GatewayDevice for ELAN: {}, nodeID:{} from cache", elanName, hwvtepNodeId);
 115             return;
 116         }
 117
 118         // Cache MAC for furthur processing later
 119         elanL2GwDevice.addUcastLocalMac(macAdded);
 120
 121         elanL2GatewayUtils.installL2GwUcastMacInElan(elan, elanL2GwDevice, macAddress, macAdded, null);
 122     }
 123
 124     @Override
 125     protected InstanceIdentifier<LocalUcastMacs> getWildCardPath() {
 126         return HwvtepUtils.getWildCardPathForLocalUcastMacs();
 127     }
 128
 129     @Override
 130     protected HwvtepLocalUcastMacListener getDataTreeChangeListener() {
 131         return this;
 132     }
 133 }