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 javax.annotation.PostConstruct;
  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.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.opendaylight.yangtools.yang.common.Uint64;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41 @Singleton
  42 public class DhcpUCastMacListener
  43         extends AsyncClusteredDataTreeChangeListenerBase<LocalUcastMacs, DhcpUCastMacListener> {
  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(LocalUcastMacs.class, DhcpUCastMacListener.class);
  55         this.broker = dataBroker;
  56         this.dhcpExternalTunnelManager = dhcpExtTunnelMgr;
  57         this.dhcpManager = dhcpManager;
  58         this.config = config;
  59     }
  60
  61     @PostConstruct
  62     public void init() {
  63         if (config.isControllerDhcpEnabled()) {
  64             registerListener(LogicalDatastoreType.OPERATIONAL, broker);
  65         }
  66     }
  67
  68     @Override
  69     protected InstanceIdentifier<LocalUcastMacs> getWildCardPath() {
  70         return InstanceIdentifier.create(NetworkTopology.class).child(Topology.class).child(Node.class)
  71                 .augmentation(HwvtepGlobalAugmentation.class).child(LocalUcastMacs.class);
  72     }
  73
  74     @Override
  75     @PreDestroy
  76     public void close() {
  77         super.close();
  78         LOG.info("DhcpUCastMacListener Closed");
  79     }
  80
  81     @Override
  82     protected void remove(InstanceIdentifier<LocalUcastMacs> identifier,
  83             LocalUcastMacs del) {
  84         // Flow removal for table 18 is handled in Neutron Port delete.
  85         //remove the new CR-DHCP
  86         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
  87         LogicalSwitches logicalSwitch = getLogicalSwitches(del);
  88         if (null == logicalSwitch) {
  89             LOG.error("DhcpUCastMacListener remove :Logical Switch ref doesn't have data");
  90             return;
  91         }
  92         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
  93         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
  94         if (device == null) {
  95             LOG.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
  96             return;
  97         }
  98         IpAddress tunnelIp = device.getTunnelIp();
  99         Pair<IpAddress, String> tunnelIpElanName = new ImmutablePair<>(tunnelIp, elanInstanceName);
 100         dhcpExternalTunnelManager.removeFromAvailableCache(tunnelIpElanName);
 101     }
 102
 103     @Override
 104     protected void update(InstanceIdentifier<LocalUcastMacs> identifier,
 105             LocalUcastMacs original, LocalUcastMacs update) {
 106         // TODO Auto-generated method stub
 107
 108     }
 109
 110     @Override
 111     protected void add(InstanceIdentifier<LocalUcastMacs> identifier,
 112             LocalUcastMacs add) {
 113         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
 114         InstanceIdentifier<LogicalSwitches> logicalSwitchRef =
 115                 (InstanceIdentifier<LogicalSwitches>) add.getLogicalSwitchRef().getValue();
 116         Optional<LogicalSwitches> logicalSwitchOptional =
 117                 MDSALUtil.read(broker, LogicalDatastoreType.OPERATIONAL, logicalSwitchRef);
 118         if (!logicalSwitchOptional.isPresent()) {
 119             LOG.error("Logical Switch ref doesn't have data {}", logicalSwitchRef);
 120             return;
 121         }
 122         LogicalSwitches logicalSwitch = logicalSwitchOptional.get();
 123         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
 124         String macAddress = add.getMacEntryKey().getValue();
 125         Uint64 vni = Uint64.valueOf(logicalSwitch.getTunnelKey());
 126         Port port = dhcpExternalTunnelManager.readVniMacToPortCache(vni, macAddress);
 127         if (port == null) {
 128             LOG.trace("No neutron port created for macAddress {}, tunnelKey {}", macAddress, vni);
 129             return;
 130         }
 131         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
 132         if (device == null) {
 133             LOG.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
 134             return;
 135         }
 136         IpAddress tunnelIp = device.getTunnelIp();
 137         Subnet subnet = dhcpManager.getNeutronSubnet(port);
 138         if (null != subnet && !subnet.isEnableDhcp()) {
 139             dhcpExternalTunnelManager.updateExistingVMTunnelIPCache(tunnelIp, elanInstanceName, macAddress);
 140             LOG.warn("DhcpUCastMacListener add: flag for the subnetId {} is False so Table 18 entries are not added",
 141                      subnet.getUuid());
 142             return;
 143         }
 144         Uint64 designatedDpnId =
 145                 dhcpExternalTunnelManager.readDesignatedSwitchesForExternalTunnel(tunnelIp, elanInstanceName);
 146         if (designatedDpnId == null || designatedDpnId.equals(DhcpMConstants.INVALID_DPID)) {
 147             LOG.trace("Unable to install flows for macAddress {}. TunnelIp {}, elanInstanceName {}, designatedDpn {} ",
 148                     macAddress, tunnelIp, elanInstanceName, designatedDpnId);
 149             dhcpExternalTunnelManager.updateLocalCache(tunnelIp, elanInstanceName, macAddress);
 150             return;
 151         }
 152         dhcpExternalTunnelManager.installDhcpFlowsForVms(tunnelIp, elanInstanceName,
 153                 DhcpServiceUtils.getListOfDpns(broker), designatedDpnId, macAddress);
 154     }
 155
 156     @Nullable
 157     private LogicalSwitches getLogicalSwitches(LocalUcastMacs ucastMacs) {
 158         InstanceIdentifier<LogicalSwitches> logicalSwitchRef =
 159                 (InstanceIdentifier<LogicalSwitches>)ucastMacs.getLogicalSwitchRef().getValue();
 160         return MDSALUtil.read(broker, LogicalDatastoreType.OPERATIONAL, logicalSwitchRef).orNull();
 161     }
 162
 163     @Override
 164     protected DhcpUCastMacListener getDataTreeChangeListener() {
 165         return DhcpUCastMacListener.this;
 166     }
 167 }