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.rev130715.IpAddress;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepGlobalAugmentation;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LocalUcastMacs;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LogicalSwitches;
  26 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  27 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  28 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  29 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  30 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  31 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 import com.google.common.base.Optional;
  36
  37 public class DhcpUCastMacListener extends AsyncClusteredDataChangeListenerBase<LocalUcastMacs, DhcpUCastMacListener> implements AutoCloseable {
  38
  39     private static final Logger logger = LoggerFactory.getLogger(DhcpUCastMacListener.class);
  40     private DataBroker broker;
  41     private ListenerRegistration<DataChangeListener> listenerRegistration;
  42     private DhcpExternalTunnelManager dhcpExternalTunnelManager;
  43
  44     public DhcpUCastMacListener(DhcpExternalTunnelManager dhcpManager, DataBroker dataBroker) {
  45         super(LocalUcastMacs.class, DhcpUCastMacListener.class);
  46         this.broker = dataBroker;
  47         this.dhcpExternalTunnelManager = dhcpManager;
  48     }
  49
  50     @Override
  51     protected InstanceIdentifier<LocalUcastMacs> getWildCardPath() {
  52         return InstanceIdentifier.create(NetworkTopology.class).child(Topology.class).child(Node.class)
  53                 .augmentation(HwvtepGlobalAugmentation.class).child(LocalUcastMacs.class);
  54     }
  55
  56     @Override
  57     public void close() throws Exception {
  58         if (listenerRegistration != null) {
  59             try {
  60                 listenerRegistration.close();
  61             } catch (final Exception e) {
  62                 logger.error("Error when cleaning up DataChangeListener.", e);
  63             }
  64             listenerRegistration = null;
  65         }
  66         logger.info("DhcpUCastMacListener Closed");
  67     }
  68
  69     @Override
  70     protected void remove(InstanceIdentifier<LocalUcastMacs> identifier,
  71             LocalUcastMacs del) {
  72         // Flow removal for table 18 is handled in Neutron Port delete.
  73     }
  74
  75     @Override
  76     protected void update(InstanceIdentifier<LocalUcastMacs> identifier,
  77             LocalUcastMacs original, LocalUcastMacs update) {
  78         // TODO Auto-generated method stub
  79
  80     }
  81
  82     @Override
  83     protected void add(InstanceIdentifier<LocalUcastMacs> identifier,
  84             LocalUcastMacs add) {
  85         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
  86         InstanceIdentifier<LogicalSwitches> logicalSwitchRef = (InstanceIdentifier<LogicalSwitches>) add.getLogicalSwitchRef().getValue();
  87         Optional<LogicalSwitches> logicalSwitchOptional = MDSALUtil.read(broker, LogicalDatastoreType.OPERATIONAL, logicalSwitchRef);
  88         if ( !logicalSwitchOptional.isPresent() ) {
  89             logger.error("Logical Switch ref doesn't have data {}", logicalSwitchRef);
  90             return;
  91         }
  92         LogicalSwitches logicalSwitch = logicalSwitchOptional.get();
  93         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
  94         String macAddress = add.getMacEntryKey().getValue();
  95         BigInteger vni = new BigInteger(logicalSwitch.getTunnelKey());
  96         Port port = dhcpExternalTunnelManager.readVniMacToPortCache(vni, macAddress);
  97         if (port == null) {
  98             logger.trace("No neutron port created for macAddress {}, tunnelKey {}", macAddress, vni);
  99             return;
 100         }
 101         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
 102         if (device == null) {
 103             logger.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
 104             return;
 105         }
 106         IpAddress tunnelIp = device.getTunnelIp();
 107         BigInteger designatedDpnId = dhcpExternalTunnelManager.readDesignatedSwitchesForExternalTunnel(tunnelIp, elanInstanceName);
 108         dhcpExternalTunnelManager.installDhcpFlowsForVms(tunnelIp, elanInstanceName, DhcpServiceUtils.getListOfDpns(broker), designatedDpnId, macAddress);
 109     }
 110
 111     @Override
 112     protected ClusteredDataChangeListener getDataChangeListener() {
 113         return DhcpUCastMacListener.this;
 114     }
 115
 116     @Override
 117     protected DataChangeScope getDataChangeScope() {
 118         return DataChangeScope.SUBTREE;
 119     }
 120 }