dhcpservice/dhcpservice-impl/src/main/java/org/opendaylight/vpnservice/dhcpservice/DhcpUCastMacListener.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.vpnservice.dhcpservice;
   9
  10 import java.math.BigInteger;
  11
  12 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataChangeListener;
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  15 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.elanmanager.utils.ElanL2GwCacheUtils;
  18 import org.opendaylight.vpnservice.datastoreutils.AsyncClusteredDataChangeListenerBase;
  19 import org.opendaylight.vpnservice.mdsalutil.MDSALUtil;
  20 import org.opendaylight.vpnservice.neutronvpn.api.l2gw.L2GatewayDevice;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepGlobalAugmentation;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LocalUcastMacs;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LogicalSwitches;
  25 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  26 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  27 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  28 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  29 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  30 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 import com.google.common.base.Optional;
  35
  36 public class DhcpUCastMacListener extends AsyncClusteredDataChangeListenerBase<LocalUcastMacs, DhcpUCastMacListener> implements AutoCloseable {
  37
  38     private static final Logger logger = LoggerFactory.getLogger(DhcpUCastMacListener.class);
  39     private DataBroker broker;
  40     private ListenerRegistration<DataChangeListener> listenerRegistration;
  41     private DhcpExternalTunnelManager dhcpExternalTunnelManager;
  42
  43     public DhcpUCastMacListener(DhcpExternalTunnelManager dhcpManager, DataBroker dataBroker) {
  44         super(LocalUcastMacs.class, DhcpUCastMacListener.class);
  45         this.broker = dataBroker;
  46         this.dhcpExternalTunnelManager = dhcpManager;
  47     }
  48
  49     @Override
  50     protected InstanceIdentifier<LocalUcastMacs> getWildCardPath() {
  51         return InstanceIdentifier.create(NetworkTopology.class).child(Topology.class).child(Node.class)
  52                 .augmentation(HwvtepGlobalAugmentation.class).child(LocalUcastMacs.class);
  53     }
  54
  55     @Override
  56     public void close() throws Exception {
  57         if (listenerRegistration != null) {
  58             try {
  59                 listenerRegistration.close();
  60             } catch (final Exception e) {
  61                 logger.error("Error when cleaning up DataChangeListener.", e);
  62             }
  63             listenerRegistration = null;
  64         }
  65         logger.info("DhcpUCastMacListener Closed");
  66     }
  67
  68     @Override
  69     protected void remove(InstanceIdentifier<LocalUcastMacs> identifier,
  70             LocalUcastMacs del) {
  71         // Flow removal for table 18 is handled in Neutron Port delete.
  72     }
  73
  74     @Override
  75     protected void update(InstanceIdentifier<LocalUcastMacs> identifier,
  76             LocalUcastMacs original, LocalUcastMacs update) {
  77         // TODO Auto-generated method stub
  78
  79     }
  80
  81     @Override
  82     protected void add(InstanceIdentifier<LocalUcastMacs> identifier,
  83             LocalUcastMacs add) {
  84         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
  85         InstanceIdentifier<LogicalSwitches> logicalSwitchRef = (InstanceIdentifier<LogicalSwitches>) add.getLogicalSwitchRef().getValue();
  86         Optional<LogicalSwitches> logicalSwitchOptional = MDSALUtil.read(broker, LogicalDatastoreType.OPERATIONAL, logicalSwitchRef);
  87         if ( !logicalSwitchOptional.isPresent() ) {
  88             logger.error("Logical Switch ref doesn't have data {}", logicalSwitchRef);
  89             return;
  90         }
  91         LogicalSwitches logicalSwitch = logicalSwitchOptional.get();
  92         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
  93         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
  94         if (device == null) {
  95             logger.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
  96             return;
  97         }
  98         IpAddress tunnelIp = device.getTunnelIp();
  99         BigInteger designatedDpnId = dhcpExternalTunnelManager.readDesignatedSwitchesForExternalTunnel(tunnelIp, elanInstanceName);
 100         dhcpExternalTunnelManager.installDhcpFlowsForVms(tunnelIp, elanInstanceName, DhcpServiceUtils.getListOfDpns(broker), designatedDpnId, add.getMacEntryKey().getValue());
 101     }
 102
 103     @Override
 104     protected ClusteredDataChangeListener getDataChangeListener() {
 105         return DhcpUCastMacListener.this;
 106     }
 107
 108     @Override
 109     protected DataChangeScope getDataChangeScope() {
 110         return DataChangeScope.SUBTREE;
 111     }
 112 }