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.apache.commons.lang3.tuple.ImmutablePair;
  13 import org.apache.commons.lang3.tuple.Pair;
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  16 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  17 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  18 import org.opendaylight.netvirt.dhcpservice.api.DhcpMConstants;
  19 import org.opendaylight.netvirt.elanmanager.utils.ElanL2GwCacheUtils;
  20 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
  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.yang.binding.InstanceIdentifier;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 import com.google.common.base.Optional;
  36
  37 public class DhcpUCastMacListener extends AsyncClusteredDataTreeChangeListenerBase<LocalUcastMacs, DhcpUCastMacListener> implements AutoCloseable {
  38
  39     private static final Logger LOG = LoggerFactory.getLogger(DhcpUCastMacListener.class);
  40
  41     private final DhcpExternalTunnelManager dhcpExternalTunnelManager;
  42     private final DhcpManager dhcpManager;
  43     private final DataBroker broker;
  44
  45     public DhcpUCastMacListener(DhcpManager dhcpManager,DhcpExternalTunnelManager dhcpExtTunnelMgr, DataBroker dataBroker) {
  46         super(LocalUcastMacs.class, DhcpUCastMacListener.class);
  47         this.broker = dataBroker;
  48         this.dhcpExternalTunnelManager = dhcpExtTunnelMgr;
  49         this.dhcpManager = dhcpManager;
  50     }
  51
  52     public void init() {
  53         registerListener(LogicalDatastoreType.OPERATIONAL, broker);
  54     }
  55
  56     @Override
  57     protected InstanceIdentifier<LocalUcastMacs> getWildCardPath() {
  58         return InstanceIdentifier.create(NetworkTopology.class).child(Topology.class).child(Node.class)
  59                 .augmentation(HwvtepGlobalAugmentation.class).child(LocalUcastMacs.class);
  60     }
  61
  62     @Override
  63     public void close() throws Exception {
  64         super.close();
  65         LOG.info("DhcpUCastMacListener Closed");
  66     }
  67
  68     @Override
  69     protected void remove(InstanceIdentifier<LocalUcastMacs> identifier,
  70             LocalUcastMacs del) {
  71         // Flow removal for table 18 is handled in Neutron Port delete.
  72         //remove the new CR-DHCP
  73         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
  74         LogicalSwitches logicalSwitch = getLogicalSwitches(del);
  75         if (null == logicalSwitch) {
  76             LOG.error("DhcpUCastMacListener remove :Logical Switch ref doesn't have data {}", logicalSwitch);
  77             return;
  78         }
  79         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
  80         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
  81         if (device == null) {
  82             LOG.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
  83             return;
  84         }
  85         IpAddress tunnelIp = device.getTunnelIp();
  86         Pair<IpAddress, String> tunnelIpElanName = new ImmutablePair<IpAddress, String>(tunnelIp, elanInstanceName);
  87         dhcpExternalTunnelManager.removeFromAvailableCache(tunnelIpElanName);
  88     }
  89
  90     @Override
  91     protected void update(InstanceIdentifier<LocalUcastMacs> identifier,
  92             LocalUcastMacs original, LocalUcastMacs update) {
  93         // TODO Auto-generated method stub
  94
  95     }
  96
  97     @Override
  98     protected void add(InstanceIdentifier<LocalUcastMacs> identifier,
  99             LocalUcastMacs add) {
 100         NodeId torNodeId = identifier.firstKeyOf(Node.class).getNodeId();
 101         InstanceIdentifier<LogicalSwitches> logicalSwitchRef = (InstanceIdentifier<LogicalSwitches>) add.getLogicalSwitchRef().getValue();
 102         Optional<LogicalSwitches> logicalSwitchOptional = MDSALUtil.read(broker, LogicalDatastoreType.OPERATIONAL, logicalSwitchRef);
 103         if ( !logicalSwitchOptional.isPresent() ) {
 104             LOG.error("Logical Switch ref doesn't have data {}", logicalSwitchRef);
 105             return;
 106         }
 107         LogicalSwitches logicalSwitch = logicalSwitchOptional.get();
 108         String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
 109         String macAddress = add.getMacEntryKey().getValue();
 110         BigInteger vni = new BigInteger(logicalSwitch.getTunnelKey());
 111         Port port = dhcpExternalTunnelManager.readVniMacToPortCache(vni, macAddress);
 112         if (port == null) {
 113             LOG.trace("No neutron port created for macAddress {}, tunnelKey {}", macAddress, vni);
 114             return;
 115         }
 116         L2GatewayDevice device = ElanL2GwCacheUtils.getL2GatewayDeviceFromCache(elanInstanceName, torNodeId.getValue());
 117         if (device == null) {
 118             LOG.error("Logical Switch Device with name {} is not present in L2GWCONN cache", elanInstanceName);
 119             return;
 120         }
 121         IpAddress tunnelIp = device.getTunnelIp();
 122         Subnet subnet = dhcpManager.getNeutronSubnet(port);
 123         if (null != subnet && !subnet.isEnableDhcp()) {
 124             dhcpExternalTunnelManager.updateExistingVMTunnelIPCache(tunnelIp, elanInstanceName, macAddress);
 125             LOG.warn("DhcpUCastMacListener add: flag for the subnetId {} is False so Table 18 entries are not added",
 126                      subnet.getUuid());
 127             return;
 128         }
 129         BigInteger designatedDpnId = dhcpExternalTunnelManager.readDesignatedSwitchesForExternalTunnel(tunnelIp, elanInstanceName);
 130         if (designatedDpnId == null || designatedDpnId.equals(DhcpMConstants.INVALID_DPID)) {
 131             LOG.trace("Unable to install flows for macAddress {}. TunnelIp {}, elanInstanceName {}, designatedDpn {} ", macAddress, tunnelIp, elanInstanceName, designatedDpnId);
 132             dhcpExternalTunnelManager.updateLocalCache(tunnelIp, elanInstanceName, macAddress);
 133             return;
 134         }
 135         dhcpExternalTunnelManager.installDhcpFlowsForVms(tunnelIp, elanInstanceName, DhcpServiceUtils.getListOfDpns(broker), designatedDpnId, macAddress);
 136     }
 137
 138     private LogicalSwitches getLogicalSwitches(LocalUcastMacs ucastMacs) {
 139         LogicalSwitches logicalSwitch = null;
 140         InstanceIdentifier<LogicalSwitches> logicalSwitchRef = (InstanceIdentifier<LogicalSwitches>)
 141                                                                 ucastMacs.getLogicalSwitchRef().getValue();
 142         Optional<LogicalSwitches> logicalSwitchOptional = MDSALUtil.read(broker, LogicalDatastoreType.OPERATIONAL,
 143                 logicalSwitchRef);
 144         if (logicalSwitchOptional.isPresent()) {
 145             logicalSwitch = logicalSwitchOptional.get();
 146         }
 147         return logicalSwitch;
 148     }
 149
 150     @Override
 151     protected DhcpUCastMacListener getDataTreeChangeListener() {
 152         return DhcpUCastMacListener.this;
 153     }
 154 }