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