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