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