elanmanager/impl/src/main/java/org/opendaylight/netvirt/elan/l2gw/listeners/ElanInstanceEntityOwnershipListener.java

   1 /*
   2  * Copyright (c) 2019 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 static org.opendaylight.mdsal.common.api.LogicalDatastoreType.OPERATIONAL;
  11 import static org.opendaylight.netvirt.elan.utils.ElanConstants.ELAN_EOS_DELAY;
  12
  13 import java.util.List;
  14 import java.util.Optional;
  15 import java.util.concurrent.ExecutionException;
  16 import java.util.concurrent.ScheduledFuture;
  17 import java.util.concurrent.TimeUnit;
  18 import javax.inject.Inject;
  19 import javax.inject.Singleton;
  20 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  21 import org.opendaylight.genius.utils.hwvtep.HwvtepSouthboundConstants;
  22 import org.opendaylight.mdsal.binding.api.DataBroker;
  23 import org.opendaylight.mdsal.eos.binding.api.EntityOwnershipChange;
  24 import org.opendaylight.mdsal.eos.binding.api.EntityOwnershipListener;
  25 import org.opendaylight.mdsal.eos.binding.api.EntityOwnershipService;
  26 import org.opendaylight.netvirt.elan.internal.ElanDpnInterfaceClusteredListener;
  27 import org.opendaylight.netvirt.elan.utils.Scheduler;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanDpnInterfaces;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.ElanDpnInterfacesList;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.ElanDpnInterfacesListKey;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.elan.dpn.interfaces.list.DpnInterfaces;
  32 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 @Singleton
  37 public class ElanInstanceEntityOwnershipListener implements EntityOwnershipListener {
  38
  39     private static final Logger LOG = LoggerFactory.getLogger(ElanInstanceEntityOwnershipListener.class);
  40
  41     private final L2GatewayConnectionListener l2GatewayConnectionListener;
  42     private final ElanDpnInterfaceClusteredListener elanDpnInterfaceClusteredListener;
  43     private final Scheduler scheduler;
  44     private final DataBroker dataBroker;
  45     volatile ScheduledFuture<?> ft;
  46
  47     @Inject
  48     public ElanInstanceEntityOwnershipListener(L2GatewayConnectionListener l2GatewayConnectionListener,
  49                                                ElanDpnInterfaceClusteredListener elanDpnInterfaceClusteredListener,
  50                                                Scheduler scheduler, DataBroker dataBroker,
  51                                                EntityOwnershipService entityOwnershipService) {
  52         this.l2GatewayConnectionListener = l2GatewayConnectionListener;
  53         this.elanDpnInterfaceClusteredListener = elanDpnInterfaceClusteredListener;
  54         this.scheduler = scheduler;
  55         this.dataBroker = dataBroker;
  56         entityOwnershipService.registerListener(HwvtepSouthboundConstants.ELAN_ENTITY_TYPE, this);
  57     }
  58
  59     @SuppressWarnings("checkstyle:IllegalCatch")
  60     @Override
  61     public void ownershipChanged(EntityOwnershipChange ownershipChange) {
  62         LOG.info("Entity Ownership changed for the entity: {}" , ownershipChange);
  63         if (!ownershipChange.getState().isOwner()) {
  64             if (ft != null) {
  65                 ft.cancel(false);
  66                 ft = null;
  67             }
  68             return;
  69         }
  70
  71         if (!ownershipChange.getState().wasOwner() && ownershipChange.getState().isOwner()) {
  72             if (ft != null) {
  73                 ft.cancel(false);
  74                 ft = null;
  75             }
  76             ft = scheduler.getScheduledExecutorService().schedule(() -> {
  77                 try {
  78                     //check if i'm the owner
  79                     if (ownershipChange.getState().isOwner()) {
  80                         LOG.info("Elan Entity owner is: {}", ownershipChange);
  81                         l2GatewayConnectionListener.loadL2GwConnectionCache();
  82
  83                         InstanceIdentifier<ElanDpnInterfaces> elanDpnInterfacesInstanceIdentifier = InstanceIdentifier
  84                                 .builder(ElanDpnInterfaces.class).build();
  85
  86                         Optional<ElanDpnInterfaces> optional = MDSALUtil.read(dataBroker, OPERATIONAL,
  87                                 elanDpnInterfacesInstanceIdentifier);
  88                         if (optional.isPresent() && optional.get().getElanDpnInterfacesList() != null) {
  89                             LOG.debug("Found elan dpn interfaces list");
  90                             optional.get().getElanDpnInterfacesList().forEach(elanDpnInterfacesList -> {
  91                                 List<DpnInterfaces> dpnInterfaces = elanDpnInterfacesList.getDpnInterfaces();
  92                                 InstanceIdentifier<ElanDpnInterfacesList> parentIid = InstanceIdentifier
  93                                         .builder(ElanDpnInterfaces.class).child(ElanDpnInterfacesList.class,
  94                                                 new ElanDpnInterfacesListKey(elanDpnInterfacesList
  95                                                         .getElanInstanceName())).build();
  96                                 for (DpnInterfaces dpnInterface : dpnInterfaces) {
  97                                     LOG.debug("Found elan dpn interfaces");
  98                                     elanDpnInterfaceClusteredListener.add(parentIid
  99                                                     .child(DpnInterfaces.class, dpnInterface.key()),
 100                                             dpnInterface);
 101                                 }
 102                             });
 103                         }
 104                     } else {
 105                         LOG.info("Not the owner for Elan entity {}", ownershipChange);
 106                     }
 107                     ft = null;
 108                 } catch (ExecutionException | InterruptedException e) {
 109                     LOG.error("Failed to read mdsal ", e);
 110                 }
 111             }, ELAN_EOS_DELAY, TimeUnit.MINUTES);
 112         }
 113     }
 114 }