dhcpservice/impl/src/main/java/org/opendaylight/netvirt/dhcpservice/DhcpMcastMacListener.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.dhcpservice;
   9
  10 import com.google.common.util.concurrent.MoreExecutors;
  11 import java.math.BigInteger;
  12 import java.util.List;
  13 import java.util.concurrent.TimeUnit;
  14 import javax.annotation.Nonnull;
  15 import javax.annotation.PreDestroy;
  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.utils.hwvtep.HwvtepNodeHACache;
  21 import org.opendaylight.genius.utils.hwvtep.HwvtepSouthboundConstants;
  22 import org.opendaylight.infrautils.utils.concurrent.Executors;
  23 import org.opendaylight.netvirt.dhcpservice.api.DhcpMConstants;
  24 import org.opendaylight.serviceutils.tools.mdsal.listener.AbstractAsyncDataTreeChangeListener;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.config.rev150710.DhcpserviceConfig;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepGlobalAugmentation;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LogicalSwitches;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.RemoteMcastMacs;
  30 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  31 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  32 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  33 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  34 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 @Singleton
  39 public class DhcpMcastMacListener
  40         extends AbstractAsyncDataTreeChangeListener<RemoteMcastMacs> {
  41
  42     private static final long TIMEOUT_FOR_SHUTDOWN = 30;
  43
  44     private static final Logger LOG = LoggerFactory.getLogger(DhcpMcastMacListener.class);
  45
  46     private final DataBroker dataBroker;
  47     private final DhcpExternalTunnelManager externalTunnelManager;
  48     private final DhcpL2GwUtil dhcpL2GwUtil;
  49     private final DhcpserviceConfig config;
  50
  51     @Inject
  52     public DhcpMcastMacListener(DhcpExternalTunnelManager dhcpManager, DhcpL2GwUtil dhcpL2GwUtil, DataBroker dataBroker,
  53                                 final DhcpserviceConfig config, HwvtepNodeHACache hwvtepNodeHACache) {
  54         super(dataBroker, LogicalDatastoreType.CONFIGURATION,
  55               InstanceIdentifier.create(NetworkTopology.class).child(Topology.class,
  56                                      new TopologyKey(HwvtepSouthboundConstants.HWVTEP_TOPOLOGY_ID)).child(Node.class)
  57                       .augmentation(HwvtepGlobalAugmentation.class).child(RemoteMcastMacs.class),
  58               Executors.newSingleThreadExecutor("IdPoolListener", LOG));
  59         this.externalTunnelManager = dhcpManager;
  60         this.dataBroker = dataBroker;
  61         this.dhcpL2GwUtil = dhcpL2GwUtil;
  62         this.config = config;
  63     }
  64
  65     @Override
  66     public void update(@Nonnull InstanceIdentifier<RemoteMcastMacs> identifier, @Nonnull RemoteMcastMacs original,
  67                        @Nonnull RemoteMcastMacs update) {
  68         // NOOP
  69     }
  70
  71     @Override
  72     public void add(@Nonnull InstanceIdentifier<RemoteMcastMacs> identifier, @Nonnull RemoteMcastMacs remoteMcastMacs) {
  73         String elanInstanceName = getElanName(remoteMcastMacs);
  74         IpAddress tunnelIp = dhcpL2GwUtil.getHwvtepNodeTunnelIp(identifier.firstIdentifierOf(Node.class));
  75         if (tunnelIp == null) {
  76             LOG.error("Could not find tunnelIp for {}", identifier);
  77             return;
  78         }
  79         List<BigInteger> dpns = DhcpServiceUtils.getListOfDpns(dataBroker);
  80         BigInteger designatedDpnId = externalTunnelManager.designateDpnId(tunnelIp, elanInstanceName, dpns);
  81         if (designatedDpnId == null || designatedDpnId.equals(DhcpMConstants.INVALID_DPID)) {
  82             LOG.error("Unable to designate a DPN for {}", identifier);
  83         }
  84     }
  85
  86     @Override
  87     public void remove(@Nonnull InstanceIdentifier<RemoteMcastMacs> identifier,
  88                        @Nonnull RemoteMcastMacs remoteMcastMacs) {
  89         String elanInstanceName = getElanName(remoteMcastMacs);
  90         IpAddress tunnelIp = dhcpL2GwUtil.getHwvtepNodeTunnelIp(identifier.firstIdentifierOf(Node.class));
  91         if (tunnelIp == null) {
  92             LOG.error("Could not find tunnelIp for {}", identifier);
  93             return;
  94         }
  95         BigInteger designatedDpnId = externalTunnelManager.readDesignatedSwitchesForExternalTunnel(
  96                 tunnelIp, elanInstanceName);
  97         if (designatedDpnId == null) {
  98             LOG.error("Could not find designated DPN ID elanInstanceName {}, tunnelIp {}", elanInstanceName, tunnelIp);
  99             return;
 100         }
 101         externalTunnelManager.removeDesignatedSwitchForExternalTunnel(designatedDpnId, tunnelIp, elanInstanceName);
 102     }
 103
 104     @Override
 105     @PreDestroy
 106     public void close() {
 107         if (config.isControllerDhcpEnabled()) {
 108             super.close();
 109         }
 110         MoreExecutors.shutdownAndAwaitTermination(getExecutorService(), TIMEOUT_FOR_SHUTDOWN, TimeUnit.SECONDS);
 111     }
 112
 113     private String getElanName(RemoteMcastMacs mac) {
 114         InstanceIdentifier<LogicalSwitches> logicalSwitchIid = (InstanceIdentifier<LogicalSwitches>)
 115                 mac.getLogicalSwitchRef().getValue();
 116         return logicalSwitchIid.firstKeyOf(LogicalSwitches.class).getHwvtepNodeName().getValue();
 117     }
 118 }