vpnservice/dhcpservice/dhcpservice-impl/src/main/java/org/opendaylight/netvirt/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.netvirt.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.netvirt.dhcpservice.api.DHCPMConstants;
  18 import org.opendaylight.netvirt.elanmanager.utils.ElanL2GwCacheUtils;
  19 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  20 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataChangeListenerBase;
  21 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepGlobalAugmentation;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LocalUcastMacs;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LogicalSwitches;
  27 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  28 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  29 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  30 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  31 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  32 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 import com.google.common.base.Optional;
  37
  38 public class DhcpUCastMacListener extends AsyncClusteredDataChangeListenerBase<LocalUcastMacs, DhcpUCastMacListener> implements AutoCloseable {
  39
  40     private static final Logger logger = LoggerFactory.getLogger(DhcpUCastMacListener.class);
  41     private DataBroker broker;
  42     private ListenerRegistration<DataChangeListener> listenerRegistration;
  43     private DhcpExternalTunnelManager dhcpExternalTunnelManager;
  44
  45     public DhcpUCastMacListener(DhcpExternalTunnelManager dhcpManager, DataBroker dataBroker) {
  46         super(LocalUcastMacs.class, DhcpUCastMacListener.class);
  47         this.broker = dataBroker;
  48         this.dhcpExternalTunnelManager = dhcpManager;
  49     }
  50
  51     @Override
  52     protected InstanceIdentifier<LocalUcastMacs> getWildCardPath() {
  53         return InstanceIdentifier.create(NetworkTopology.class).child(Topology.class).child(Node.class)
  54                 .augmentation(HwvtepGlobalAugmentation.class).child(LocalUcastMacs.class);
  55     }
  56
  57     @Override
  58     public void close() throws Exception {
  59         if (listenerRegistration != null) {
  60             try {
  61                 listenerRegistration.close();
  62             } catch (final Exception e) {
  63                 logger.error("Error when cleaning up DataChangeListener.", e);
  64             }
  65             listenerRegistration = null;
  66         }
  67         logger.info("DhcpUCastMacListener Closed");
  68     }
  69
  70     @Override
  71     protected void remove(InstanceIdentifier<LocalUcastMacs> identifier,
  72             LocalUcastMacs del) {
  73         // Flow removal for table 18 is handled in Neutron Port delete.
  74     }
  75
  76     @Override
  77     protected void update(InstanceIdentifier<LocalUcastMacs> identifier,
  78             LocalUcastMacs original, LocalUcastMacs update) {
  79         // TODO Auto-generated method stub
  80
  81     }
  82
  83     @Override
  84     protected void add(InstanceIdentifier<LocalUcastMacs> identifier,
  85             LocalUcastMacs add) {
  86         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
  87         InstanceIdentifier<LogicalSwitches> logicalSwitchRef = (InstanceIdentifier<LogicalSwitches>) add.getLogicalSwitchRef().getValue();
  88         Optional<LogicalSwitches> logicalSwitchOptional = MDSALUtil.read(broker, LogicalDatastoreType.OPERATIONAL, logicalSwitchRef);
  89         if ( !logicalSwitchOptional.isPresent() ) {
  90             logger.error("Logical Switch ref doesn't have data {}", logicalSwitchRef);
  91             return;
  92         }
  93         LogicalSwitches logicalSwitch = logicalSwitchOptional.get();
  94         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
  95         String macAddress = add.getMacEntryKey().getValue();
  96         BigInteger vni = new BigInteger(logicalSwitch.getTunnelKey());
  97         Port port = dhcpExternalTunnelManager.readVniMacToPortCache(vni, macAddress);
  98         if (port == null) {
  99             logger.trace("No neutron port created for macAddress {}, tunnelKey {}", macAddress, vni);
 100             return;
 101         }
 102         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
 103         if (device == null) {
 104             logger.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
 105             return;
 106         }
 107         IpAddress tunnelIp = device.getTunnelIp();
 108         BigInteger designatedDpnId = dhcpExternalTunnelManager.readDesignatedSwitchesForExternalTunnel(tunnelIp, elanInstanceName);
 109         if (designatedDpnId == null || designatedDpnId.equals(DHCPMConstants.INVALID_DPID)) {
 110             logger.trace("Unable to install flows for macAddress {}. TunnelIp {}, elanInstanceName {}, designatedDpn {} ", macAddress, tunnelIp, elanInstanceName, designatedDpnId);
 111             return;
 112         }
 113         dhcpExternalTunnelManager.installDhcpFlowsForVms(tunnelIp, elanInstanceName, DhcpServiceUtils.getListOfDpns(broker), designatedDpnId, macAddress);
 114     }
 115
 116     @Override
 117     protected ClusteredDataChangeListener getDataChangeListener() {
 118         return DhcpUCastMacListener.this;
 119     }
 120
 121     @Override
 122     protected DataChangeScope getDataChangeScope() {
 123         return DataChangeScope.SUBTREE;
 124     }
 125 }