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.util.Optional;
  11 import java.util.concurrent.ExecutionException;
  12 import javax.annotation.PreDestroy;
  13 import javax.inject.Inject;
  14 import javax.inject.Singleton;
  15 import org.apache.commons.lang3.tuple.ImmutablePair;
  16 import org.apache.commons.lang3.tuple.Pair;
  17 import org.eclipse.jdt.annotation.Nullable;
  18 import org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker;
  19 import org.opendaylight.infrautils.utils.concurrent.Executors;
  20 import org.opendaylight.mdsal.binding.api.DataBroker;
  21 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  22 import org.opendaylight.netvirt.dhcpservice.api.DhcpMConstants;
  23 import org.opendaylight.netvirt.elanmanager.utils.ElanL2GwCacheUtils;
  24 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  25 import org.opendaylight.serviceutils.tools.listener.AbstractClusteredAsyncDataTreeChangeListener;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.config.rev150710.DhcpserviceConfig;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepGlobalAugmentation;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LocalUcastMacs;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LogicalSwitches;
  33 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  34 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  35 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  36 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  38 import org.opendaylight.yangtools.yang.common.Uint64;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 @Singleton
  43 public class DhcpUCastMacListener extends AbstractClusteredAsyncDataTreeChangeListener<LocalUcastMacs> {
  44
  45     private static final Logger LOG = LoggerFactory.getLogger(DhcpUCastMacListener.class);
  46     private final DhcpExternalTunnelManager dhcpExternalTunnelManager;
  47     private final DhcpManager dhcpManager;
  48     private final DataBroker broker;
  49     private final DhcpserviceConfig config;
  50
  51     @Inject
  52     public DhcpUCastMacListener(final DhcpManager dhcpManager, final DhcpExternalTunnelManager dhcpExtTunnelMgr,
  53                                 final DataBroker dataBroker, final DhcpserviceConfig config) {
  54         super(dataBroker, LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.create(NetworkTopology.class)
  55                 .child(Topology.class).child(Node.class).augmentation(HwvtepGlobalAugmentation.class)
  56                 .child(LocalUcastMacs.class),
  57                 Executors.newListeningSingleThreadExecutor("DhcpUCastMacListener", LOG));
  58         this.broker = dataBroker;
  59         this.dhcpExternalTunnelManager = dhcpExtTunnelMgr;
  60         this.dhcpManager = dhcpManager;
  61         this.config = config;
  62         init();
  63     }
  64
  65     public void init() {
  66         if (config.isControllerDhcpEnabled()) {
  67             LOG.info("{} init", getClass().getSimpleName());
  68         }
  69     }
  70
  71     @Override
  72     @PreDestroy
  73     public void close() {
  74         super.close();
  75         Executors.shutdownAndAwaitTermination(getExecutorService());
  76         LOG.info("DhcpUCastMacListener Closed");
  77     }
  78
  79     @Override
  80     public void remove(InstanceIdentifier<LocalUcastMacs> identifier,
  81             LocalUcastMacs del) {
  82         if (!config.isControllerDhcpEnabled()) {
  83             return;
  84         }
  85         // Flow removal for table 18 is handled in Neutron Port delete.
  86         //remove the new CR-DHCP
  87         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
  88         LogicalSwitches logicalSwitch = getLogicalSwitches(del);
  89         if (null == logicalSwitch) {
  90             LOG.error("DhcpUCastMacListener remove :Logical Switch ref doesn't have data");
  91             return;
  92         }
  93         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
  94         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
  95         if (device == null) {
  96             LOG.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
  97             return;
  98         }
  99         IpAddress tunnelIp = device.getTunnelIp();
 100         Pair<IpAddress, String> tunnelIpElanName = new ImmutablePair<>(tunnelIp, elanInstanceName);
 101         dhcpExternalTunnelManager.removeFromAvailableCache(tunnelIpElanName);
 102     }
 103
 104     @Override
 105     public void update(InstanceIdentifier<LocalUcastMacs> identifier,
 106             LocalUcastMacs original, LocalUcastMacs update) {
 107         // TODO Auto-generated method stub
 108
 109     }
 110
 111     @Override
 112     public void add(InstanceIdentifier<LocalUcastMacs> identifier,
 113             LocalUcastMacs add) {
 114         if (!config.isControllerDhcpEnabled()) {
 115             return;
 116         }
 117         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
 118         InstanceIdentifier<LogicalSwitches> logicalSwitchRef =
 119                 (InstanceIdentifier<LogicalSwitches>) add.getLogicalSwitchRef().getValue();
 120         Optional<LogicalSwitches> logicalSwitchOptional;
 121         try {
 122             logicalSwitchOptional = SingleTransactionDataBroker.syncReadOptional(broker,
 123                     LogicalDatastoreType.OPERATIONAL, logicalSwitchRef);
 124         } catch (ExecutionException | InterruptedException e) {
 125             LOG.error("add: Exception while reading LogicalSwitches DS for the TOR Node ID {}", torNodeId, e);
 126             return;
 127         }
 128         if (!logicalSwitchOptional.isPresent()) {
 129             LOG.error("Logical Switch ref doesn't have data {}", logicalSwitchRef);
 130             return;
 131         }
 132         LogicalSwitches logicalSwitch = logicalSwitchOptional.get();
 133         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
 134         String macAddress = add.getMacEntryKey().getValue();
 135         Uint64 vni = Uint64.valueOf(logicalSwitch.getTunnelKey());
 136         Port port = dhcpExternalTunnelManager.readVniMacToPortCache(vni, macAddress);
 137         if (port == null) {
 138             LOG.trace("No neutron port created for macAddress {}, tunnelKey {}", macAddress, vni);
 139             return;
 140         }
 141         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
 142         if (device == null) {
 143             LOG.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
 144             return;
 145         }
 146         IpAddress tunnelIp = device.getTunnelIp();
 147         Subnet subnet = dhcpManager.getNeutronSubnet(port);
 148         if (null != subnet && !subnet.isEnableDhcp()) {
 149             dhcpExternalTunnelManager.updateExistingVMTunnelIPCache(tunnelIp, elanInstanceName, macAddress);
 150             LOG.warn("DhcpUCastMacListener add: flag for the subnetId {} is False so Table 18 entries are not added",
 151                      subnet.getUuid());
 152             return;
 153         }
 154         Uint64 designatedDpnId =
 155                 dhcpExternalTunnelManager.readDesignatedSwitchesForExternalTunnel(tunnelIp, elanInstanceName);
 156         if (designatedDpnId == null || designatedDpnId.equals(DhcpMConstants.INVALID_DPID)) {
 157             LOG.trace("Unable to install flows for macAddress {}. TunnelIp {}, elanInstanceName {}, designatedDpn {} ",
 158                     macAddress, tunnelIp, elanInstanceName, designatedDpnId);
 159             dhcpExternalTunnelManager.updateLocalCache(tunnelIp, elanInstanceName, macAddress);
 160             return;
 161         }
 162         dhcpExternalTunnelManager.installDhcpFlowsForVms(tunnelIp, elanInstanceName,
 163                 DhcpServiceUtils.getListOfDpns(broker), designatedDpnId, macAddress);
 164     }
 165
 166     @Nullable
 167     private LogicalSwitches getLogicalSwitches(LocalUcastMacs ucastMacs) {
 168         InstanceIdentifier<LogicalSwitches> logicalSwitchRef =
 169                 (InstanceIdentifier<LogicalSwitches>)ucastMacs.getLogicalSwitchRef().getValue();
 170         try {
 171             return SingleTransactionDataBroker.syncReadOptional(broker, LogicalDatastoreType.OPERATIONAL,
 172                     logicalSwitchRef).orElse(null);
 173         } catch (ExecutionException | InterruptedException e) {
 174             LOG.error("getLogicalSwitches: Exception while reading LogicalSwitches DS for ucastMacs {}", ucastMacs, e);
 175             return null;
 176         }
 177     }
 178 }