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