elanmanager/impl/src/main/java/org/opendaylight/netvirt/elan/l2gw/listeners/ElanGroupListener.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 static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  11
  12 import java.util.List;
  13 import javax.annotation.PreDestroy;
  14 import javax.inject.Inject;
  15 import javax.inject.Singleton;
  16 import org.eclipse.jdt.annotation.Nullable;
  17 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  18 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  19 import org.opendaylight.infrautils.utils.concurrent.Executors;
  20 import org.opendaylight.infrautils.utils.concurrent.LoggingFutures;
  21 import org.opendaylight.mdsal.binding.api.DataBroker;
  22 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  23 import org.opendaylight.netvirt.elan.cache.ElanInstanceCache;
  24 import org.opendaylight.netvirt.elan.l2gw.utils.ElanL2GatewayMulticastUtils;
  25 import org.opendaylight.netvirt.elan.utils.ElanClusterUtils;
  26 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  27 import org.opendaylight.netvirt.elanmanager.utils.ElanL2GwCacheUtils;
  28 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  29 import org.opendaylight.serviceutils.tools.listener.AbstractClusteredAsyncDataTreeChangeListener;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.Bucket;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.elan.dpn.interfaces.list.DpnInterfaces;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  38 import org.opendaylight.yangtools.yang.common.Uint64;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 @Singleton
  43 public class ElanGroupListener extends AbstractClusteredAsyncDataTreeChangeListener<Group> {
  44
  45     private static final Logger LOG = LoggerFactory.getLogger(ElanGroupListener.class);
  46     private final ManagedNewTransactionRunner txRunner;
  47     private final ElanClusterUtils elanClusterUtils;
  48     private final ElanUtils elanUtils;
  49     private final ElanL2GatewayMulticastUtils elanL2GatewayMulticastUtils;
  50     private final ElanInstanceCache elanInstanceCache;
  51
  52     @Inject
  53     public ElanGroupListener(DataBroker db, ElanClusterUtils elanClusterUtils, ElanUtils elanUtils,
  54             ElanL2GatewayMulticastUtils elanL2GatewayMulticastUtils, ElanInstanceCache elanInstanceCache) {
  55         super(db, LogicalDatastoreType.CONFIGURATION, InstanceIdentifier.create(Nodes.class).child(Node.class)
  56                 .augmentation(FlowCapableNode.class).child(Group.class),
  57                 Executors.newListeningSingleThreadExecutor("ElanGroupListener", LOG));
  58         this.txRunner = new ManagedNewTransactionRunnerImpl(db);
  59         this.elanClusterUtils = elanClusterUtils;
  60         this.elanUtils = elanUtils;
  61         this.elanL2GatewayMulticastUtils = elanL2GatewayMulticastUtils;
  62         this.elanInstanceCache = elanInstanceCache;
  63         LOG.trace("ElanGroupListener registered");
  64     }
  65
  66     public void init() {
  67         LOG.info("{} init", getClass().getSimpleName());
  68     }
  69
  70     @Override
  71     @PreDestroy
  72     public void close() {
  73         super.close();
  74     }
  75
  76     @Override
  77     public void remove(InstanceIdentifier<Group> identifier, Group del) {
  78         LOG.trace("received group removed {}", del.key().getGroupId());
  79     }
  80
  81
  82     @Nullable
  83     ElanInstance getElanInstanceFromGroupId(Group update) {
  84         for (ElanInstance elanInstance : elanInstanceCache.getAllPresent()) {
  85             if (elanInstance.getElanTag() != null) {
  86                 long elanTag = elanInstance.getElanTag().longValue();
  87                 long elanBCGroupId = ElanUtils.getElanRemoteBroadCastGroupID(elanTag);
  88                 if (elanBCGroupId == update.getGroupId().getValue().longValue()) {
  89                     return elanInstance;
  90                 }
  91             }
  92         }
  93         return null;
  94     }
  95
  96     @Nullable
  97     private static Uint64 getDpnId(String node) {
  98         //openflow:1]
  99         String[] temp = node.split(":");
 100         if (temp.length == 2) {
 101             return Uint64.valueOf(temp[1]);
 102         }
 103         return null;
 104     }
 105
 106     @Override
 107     public void update(InstanceIdentifier<Group> identifier, @Nullable Group original, Group update) {
 108         LOG.trace("received group updated {}", update.key().getGroupId());
 109         final Uint64 dpnId = getDpnId(identifier.firstKeyOf(Node.class).getId().getValue());
 110         if (dpnId == null) {
 111             return;
 112         }
 113
 114         List<L2GatewayDevice> allDevices = ElanL2GwCacheUtils.getAllElanDevicesFromCache();
 115         if (allDevices.isEmpty()) {
 116             LOG.trace("no elan devices present in cache {}", update.key().getGroupId());
 117             return;
 118         }
 119         int expectedElanFootprint = 0;
 120         final ElanInstance elanInstance = getElanInstanceFromGroupId(update);
 121         if (elanInstance == null) {
 122             LOG.trace("no elan instance is null {}", update.key().getGroupId());
 123             return;
 124         }
 125
 126         final int devicesSize = ElanL2GwCacheUtils.getInvolvedL2GwDevices(elanInstance.getElanInstanceName()).size();
 127         if (devicesSize == 0) {
 128             LOG.trace("no elan devices in elan cache {} {}", elanInstance.getElanInstanceName(),
 129                     update.key().getGroupId());
 130             return;
 131         }
 132         boolean updateGroup = false;
 133         List<DpnInterfaces> dpns = elanUtils.getElanDPNByName(elanInstance.getElanInstanceName());
 134         if (dpns.size() > 0) {
 135             expectedElanFootprint += dpns.size();
 136         } else {
 137             updateGroup = true;
 138         }
 139         expectedElanFootprint += devicesSize;
 140         if (update.getBuckets() != null && update.getBuckets().getBucket() != null) {
 141             if (update.getBuckets().getBucket().size() != expectedElanFootprint) {
 142                 updateGroup = true;
 143             } else {
 144                 LOG.trace("no of buckets matched perfectly {} {}", elanInstance.getElanInstanceName(),
 145                         update.key().getGroupId());
 146             }
 147         }
 148         if (updateGroup) {
 149             List<Bucket> bucketList = elanL2GatewayMulticastUtils.getRemoteBCGroupBuckets(elanInstance, null, dpnId, 0,
 150                     elanInstance.getElanTag().toJava());
 151             expectedElanFootprint--;//remove local bcgroup bucket
 152             if (bucketList.size() != expectedElanFootprint) {
 153                 //no point in retrying if not able to meet expected foot print
 154                 return;
 155             }
 156             LOG.trace("no of buckets mismatched {} {}", elanInstance.getElanInstanceName(),
 157                     update.key().getGroupId());
 158             elanClusterUtils.runOnlyInOwnerNode(elanInstance.getElanInstanceName(), "updating broadcast group", () -> {
 159                 LoggingFutures.addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION,
 160                     confTx -> elanL2GatewayMulticastUtils.setupElanBroadcastGroups(elanInstance, dpnId, confTx)),
 161                     LOG, "Error setting up ELAN BGs");
 162                 return null;
 163             });
 164         } else {
 165             LOG.trace("no buckets in the update {} {}", elanInstance.getElanInstanceName(),
 166                     update.key().getGroupId());
 167         }
 168     }
 169
 170     @Override
 171     public void add(InstanceIdentifier<Group> identifier, Group added) {
 172         LOG.trace("received group add {}", added.key().getGroupId());
 173         update(identifier, null/*original*/, added);
 174     }
 175 }
 176
 177
 178