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 com.google.common.base.Optional;
  13 import org.apache.commons.lang3.tuple.ImmutablePair;
  14 import org.apache.commons.lang3.tuple.Pair;
  15 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataChangeListener;
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  18 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.netvirt.dhcpservice.api.DHCPMConstants;
  21 import org.opendaylight.netvirt.elanmanager.utils.ElanL2GwCacheUtils;
  22 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  23 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataChangeListenerBase;
  24 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  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.neutron.ports.rev150712.ports.attributes.ports.Port;
  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.LocalUcastMacs;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LogicalSwitches;
  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.NodeId;
  32 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  33 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
  35 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  36 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 import com.google.common.base.Optional;
  41
  42 public class DhcpUCastMacListener extends AsyncClusteredDataChangeListenerBase<LocalUcastMacs, DhcpUCastMacListener> implements AutoCloseable {
  43
  44     private static final Logger logger = LoggerFactory.getLogger(DhcpUCastMacListener.class);
  45     private DataBroker broker;
  46     private ListenerRegistration<DataChangeListener> listenerRegistration;
  47     private DhcpExternalTunnelManager dhcpExternalTunnelManager;
  48     private DhcpManager dhcpManager;
  49
  50     public DhcpUCastMacListener(DhcpManager dhcpManager,DhcpExternalTunnelManager dhcpExtTunnelMgr, DataBroker dataBroker) {
  51         super(LocalUcastMacs.class, DhcpUCastMacListener.class);
  52         this.broker = dataBroker;
  53         this.dhcpExternalTunnelManager = dhcpExtTunnelMgr;
  54         this.dhcpManager = dhcpManager;
  55     }
  56
  57     @Override
  58     protected InstanceIdentifier<LocalUcastMacs> getWildCardPath() {
  59         return InstanceIdentifier.create(NetworkTopology.class).child(Topology.class).child(Node.class)
  60                 .augmentation(HwvtepGlobalAugmentation.class).child(LocalUcastMacs.class);
  61     }
  62
  63     @Override
  64     public void close() throws Exception {
  65         if (listenerRegistration != null) {
  66             try {
  67                 listenerRegistration.close();
  68             } catch (final Exception e) {
  69                 logger.error("Error when cleaning up DataChangeListener.", e);
  70             }
  71             listenerRegistration = null;
  72         }
  73         logger.info("DhcpUCastMacListener Closed");
  74     }
  75
  76     @Override
  77     protected void remove(InstanceIdentifier<LocalUcastMacs> identifier,
  78             LocalUcastMacs del) {
  79         // Flow removal for table 18 is handled in Neutron Port delete.
  80         //remove the new CR-DHCP
  81         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
  82         LogicalSwitches logicalSwitch = getLogicalSwitches(del);
  83         if (null == logicalSwitch) {
  84             logger.error("DhcpUCastMacListener remove :Logical Switch ref doesn't have data {}", logicalSwitch);
  85             return;
  86         }
  87         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
  88         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
  89         if (device == null) {
  90             logger.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
  91             return;
  92         }
  93         IpAddress tunnelIp = device.getTunnelIp();
  94         Pair<IpAddress, String> tunnelIpElanName = new ImmutablePair<IpAddress, String>(tunnelIp, elanInstanceName);
  95         dhcpExternalTunnelManager.removeFromAvailableCache(tunnelIpElanName);
  96     }
  97
  98     @Override
  99     protected void update(InstanceIdentifier<LocalUcastMacs> identifier,
 100             LocalUcastMacs original, LocalUcastMacs update) {
 101         // TODO Auto-generated method stub
 102
 103     }
 104
 105     @Override
 106     protected void add(InstanceIdentifier<LocalUcastMacs> identifier,
 107             LocalUcastMacs add) {
 108         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
 109         InstanceIdentifier<LogicalSwitches> logicalSwitchRef = (InstanceIdentifier<LogicalSwitches>) add.getLogicalSwitchRef().getValue();
 110         Optional<LogicalSwitches> logicalSwitchOptional = MDSALUtil.read(broker, LogicalDatastoreType.OPERATIONAL, logicalSwitchRef);
 111         if ( !logicalSwitchOptional.isPresent() ) {
 112             logger.error("Logical Switch ref doesn't have data {}", logicalSwitchRef);
 113             return;
 114         }
 115         LogicalSwitches logicalSwitch = logicalSwitchOptional.get();
 116         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
 117         String macAddress = add.getMacEntryKey().getValue();
 118         BigInteger vni = new BigInteger(logicalSwitch.getTunnelKey());
 119         Port port = dhcpExternalTunnelManager.readVniMacToPortCache(vni, macAddress);
 120         if (port == null) {
 121             logger.trace("No neutron port created for macAddress {}, tunnelKey {}", macAddress, vni);
 122             return;
 123         }
 124         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
 125         if (device == null) {
 126             logger.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
 127             return;
 128         }
 129         IpAddress tunnelIp = device.getTunnelIp();
 130         Subnet subnet = dhcpManager.getNeutronSubnet(port);
 131         if (null != subnet && !subnet.isEnableDhcp()) {
 132             dhcpExternalTunnelManager.updateExistingVMTunnelIPCache(tunnelIp, elanInstanceName, macAddress);
 133             logger.warn("DhcpUCastMacListener add: flag for the subnetId "+subnet.getUuid()+ " is False so Table 18 " +
 134                     "entries are not added" );
 135             return;
 136         }
 137         BigInteger designatedDpnId = dhcpExternalTunnelManager.readDesignatedSwitchesForExternalTunnel(tunnelIp, elanInstanceName);
 138         if (designatedDpnId == null || designatedDpnId.equals(DHCPMConstants.INVALID_DPID)) {
 139             logger.trace("Unable to install flows for macAddress {}. TunnelIp {}, elanInstanceName {}, designatedDpn {} ", macAddress, tunnelIp, elanInstanceName, designatedDpnId);
 140             dhcpExternalTunnelManager.updateLocalCache(tunnelIp, elanInstanceName, macAddress);
 141             return;
 142         }
 143         dhcpExternalTunnelManager.installDhcpFlowsForVms(tunnelIp, elanInstanceName, DhcpServiceUtils.getListOfDpns(broker), designatedDpnId, macAddress);
 144     }
 145
 146     @Override
 147     protected ClusteredDataChangeListener getDataChangeListener() {
 148         return DhcpUCastMacListener.this;
 149     }
 150
 151     @Override
 152     protected DataChangeScope getDataChangeScope() {
 153         return DataChangeScope.SUBTREE;
 154     }
 155
 156     private LogicalSwitches getLogicalSwitches(LocalUcastMacs ucastMacs) {
 157         LogicalSwitches logicalSwitch = null;
 158         InstanceIdentifier<LogicalSwitches> logicalSwitchRef = (InstanceIdentifier<LogicalSwitches>)
 159                                                                 ucastMacs.getLogicalSwitchRef().getValue();
 160         Optional<LogicalSwitches> logicalSwitchOptional = MDSALUtil.read(broker, LogicalDatastoreType.OPERATIONAL,
 161                 logicalSwitchRef);
 162         if (logicalSwitchOptional.isPresent()) {
 163             logicalSwitch = logicalSwitchOptional.get();
 164         }
 165         return logicalSwitch;
 166     }
 167 }