vpnservice/elanmanager/elanmanager-impl/src/main/java/org/opendaylight/netvirt/elan/internal/ElanDpnInterfaceClusteredListener.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.internal;
   9
  10 import java.util.List;
  11 import java.util.concurrent.Callable;
  12
  13 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataChangeListener;
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  16 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.netvirt.elan.l2gw.utils.ElanL2GatewayMulticastUtils;
  19 import org.opendaylight.netvirt.elan.utils.ElanClusterUtils;
  20 import org.opendaylight.netvirt.elan.l2gw.utils.ElanL2GatewayUtils;
  21 import org.opendaylight.netvirt.elanmanager.utils.ElanL2GwCacheUtils;
  22 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataChangeListenerBase;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanDpnInterfaces;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.ElanDpnInterfacesList;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.elan.dpn.interfaces.list.DpnInterfaces;
  26 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 import com.google.common.collect.Lists;
  32 import com.google.common.util.concurrent.ListenableFuture;
  33
  34 public class ElanDpnInterfaceClusteredListener
  35     extends AsyncClusteredDataChangeListenerBase<DpnInterfaces, ElanDpnInterfaceClusteredListener>
  36     implements AutoCloseable {
  37     private ElanServiceProvider elanServiceProvider = null;
  38     private static volatile ElanDpnInterfaceClusteredListener elanDpnInterfaceClusteredListener = null;
  39     private ListenerRegistration<DataChangeListener> listenerRegistration;
  40
  41     private static final Logger LOG = LoggerFactory.getLogger(ElanDpnInterfaceClusteredListener.class);
  42
  43
  44     public ElanDpnInterfaceClusteredListener(ElanServiceProvider elanServiceProvider) {
  45         super(DpnInterfaces.class, ElanDpnInterfaceClusteredListener.class);
  46         this.elanServiceProvider = elanServiceProvider;
  47         registerListener(elanServiceProvider.getBroker());
  48     }
  49
  50     public static ElanDpnInterfaceClusteredListener getElanDpnInterfaceClusteredListener(
  51         ElanServiceProvider elanServiceProvider) {
  52         if (elanDpnInterfaceClusteredListener == null) {
  53             synchronized (ElanDpnInterfaceClusteredListener.class) {
  54                 if (elanDpnInterfaceClusteredListener == null) {
  55                     elanDpnInterfaceClusteredListener = new ElanDpnInterfaceClusteredListener(elanServiceProvider);
  56                 }
  57             }
  58         }
  59         return elanDpnInterfaceClusteredListener;
  60     }
  61     private void registerListener(final DataBroker db) {
  62         try {
  63             listenerRegistration = elanServiceProvider.getBroker().registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  64                 getWildCardPath(), ElanDpnInterfaceClusteredListener.this, AsyncDataBroker.DataChangeScope.BASE);
  65         } catch (final Exception e) {
  66             LOG.error("DpnInterfaces DataChange listener registration fail!", e);
  67         }
  68     }
  69
  70     @Override
  71     public InstanceIdentifier<DpnInterfaces> getWildCardPath() {
  72         return InstanceIdentifier.builder(ElanDpnInterfaces.class).child(ElanDpnInterfacesList.class)
  73             .child(DpnInterfaces.class).build();
  74     }
  75
  76     @Override
  77     protected ClusteredDataChangeListener getDataChangeListener() {
  78         return ElanDpnInterfaceClusteredListener.this;
  79     }
  80
  81     @Override
  82     protected AsyncDataBroker.DataChangeScope getDataChangeScope() {
  83         return AsyncDataBroker.DataChangeScope.BASE;
  84     }
  85
  86     void handleUpdate(InstanceIdentifier<DpnInterfaces> id, DpnInterfaces dpnInterfaces) {
  87         final String elanName = getElanName(id);
  88         if (ElanL2GwCacheUtils.getInvolvedL2GwDevices(elanName).isEmpty()) {
  89             LOG.debug("dpnInterface updation, no external l2 devices to update for elan {} with Dp Id:", elanName,
  90                 dpnInterfaces.getDpId());
  91             return;
  92         }
  93         ElanClusterUtils.runOnlyInLeaderNode(elanName, "updating mcast mac upon tunnel event",
  94             new Callable<List<ListenableFuture<Void>>>() {
  95                 @Override
  96                 public List<ListenableFuture<Void>> call() throws Exception {
  97                     return Lists.newArrayList(
  98                         ElanL2GatewayMulticastUtils.updateRemoteMcastMacOnElanL2GwDevices(elanName));
  99                 }
 100             });
 101     }
 102
 103     @Override
 104     protected void remove(InstanceIdentifier<DpnInterfaces> identifier, final DpnInterfaces dpnInterfaces) {
 105         // this is the last dpn interface on this elan
 106         final String elanName = getElanName(identifier);
 107         LOG.debug("Received ElanDpnInterface removed for for elan {} with Dp Id ", elanName,
 108             dpnInterfaces.getDpId());
 109
 110         if (ElanL2GwCacheUtils.getInvolvedL2GwDevices(elanName).isEmpty()) {
 111             LOG.debug("dpnInterface removed, no external l2 devices to update for elan {} with Dp Id:", elanName,
 112                 dpnInterfaces.getDpId());
 113             return;
 114         }
 115         ElanClusterUtils.runOnlyInLeaderNode(elanName, "handling ElanDpnInterface removed",
 116             new Callable<List<ListenableFuture<Void>>>() {
 117                 @Override
 118                 public List<ListenableFuture<Void>> call() throws Exception {
 119                     // deleting Elan L2Gw Devices UcastLocalMacs From Dpn
 120                     ElanL2GatewayUtils.deleteElanL2GwDevicesUcastLocalMacsFromDpn(elanName,
 121                         dpnInterfaces.getDpId());
 122                     // updating remote mcast mac on l2gw devices
 123                     return Lists.newArrayList(
 124                         ElanL2GatewayMulticastUtils.updateRemoteMcastMacOnElanL2GwDevices(elanName));
 125                 }
 126             });
 127     }
 128
 129     @Override
 130     protected void update(InstanceIdentifier<DpnInterfaces> identifier, DpnInterfaces original,
 131                           final DpnInterfaces dpnInterfaces) {
 132         LOG.debug("dpninterfaces update fired new size {}", dpnInterfaces.getInterfaces().size());
 133         if (dpnInterfaces.getInterfaces().size() == 0) {
 134             LOG.debug("dpninterfaces last dpn interface on this elan {} ", dpnInterfaces.getKey());
 135             // this is the last dpn interface on this elan
 136             handleUpdate(identifier, dpnInterfaces);
 137         }
 138     }
 139
 140     @Override
 141     protected void add(InstanceIdentifier<DpnInterfaces> identifier, final DpnInterfaces dpnInterfaces) {
 142         if (dpnInterfaces.getInterfaces().size() == 1) {
 143             LOG.debug("dpninterfaces first dpn interface on this elan {} {} ", dpnInterfaces.getKey(),
 144                 dpnInterfaces.getInterfaces().get(0));
 145             // this is the first dpn interface on this elan
 146             handleUpdate(identifier, dpnInterfaces);
 147         }
 148     }
 149
 150     /**
 151      * @param identifier
 152      * @return
 153      */
 154     private String getElanName(InstanceIdentifier<DpnInterfaces> identifier) {
 155         return identifier.firstKeyOf(ElanDpnInterfacesList.class).getElanInstanceName();
 156     }
 157
 158 }