dhcpservice/impl/src/main/java/org/opendaylight/netvirt/dhcpservice/DhcpSubnetListener.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
   9 package org.opendaylight.netvirt.dhcpservice;
  10
  11 import static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  12
  13 import com.google.common.base.Optional;
  14 import java.math.BigInteger;
  15 import java.util.List;
  16 import java.util.Objects;
  17 import java.util.concurrent.ExecutionException;
  18 import javax.annotation.PostConstruct;
  19 import javax.annotation.PreDestroy;
  20 import javax.inject.Inject;
  21 import javax.inject.Singleton;
  22 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  23 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  24 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  25 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  26 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  27 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  28 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  29 import org.opendaylight.genius.mdsalutil.NwConstants;
  30 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.InterfacesState;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.Subnetmaps;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.subnetmaps.Subnetmap;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.subnetmaps.SubnetmapBuilder;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.subnetmaps.SubnetmapKey;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.Subnets;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.config.rev150710.DhcpserviceConfig;
  45 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  46 import org.slf4j.Logger;
  47 import org.slf4j.LoggerFactory;
  48
  49 @Singleton
  50 public class DhcpSubnetListener extends AsyncClusteredDataTreeChangeListenerBase<Subnet, DhcpSubnetListener> {
  51     private static final Logger LOG = LoggerFactory.getLogger(DhcpSubnetListener.class);
  52
  53     private final DataBroker dataBroker;
  54     private final ManagedNewTransactionRunner txRunner;
  55     private final DhcpManager dhcpManager;
  56     private final DhcpExternalTunnelManager dhcpExternalTunnelManager;
  57     private final DhcpserviceConfig config;
  58
  59     @Inject
  60     public DhcpSubnetListener(final DhcpManager dhcpManager, final DhcpExternalTunnelManager
  61             dhcpExternalTunnelManager, final DataBroker broker, final DhcpserviceConfig config) {
  62         super(Subnet.class, DhcpSubnetListener.class);
  63         this.dhcpManager = dhcpManager;
  64         this.dataBroker = broker;
  65         this.txRunner = new ManagedNewTransactionRunnerImpl(broker);
  66         this.dhcpExternalTunnelManager = dhcpExternalTunnelManager;
  67         this.config = config;
  68     }
  69
  70     @PostConstruct
  71     public void init() {
  72         if (config.isControllerDhcpEnabled()) {
  73             registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  74         }
  75     }
  76
  77     @Override
  78     protected void add(InstanceIdentifier<Subnet> identifier, Subnet add) {
  79
  80     }
  81
  82     @Override
  83     protected void remove(InstanceIdentifier<Subnet> identifier, Subnet del) {
  84
  85     }
  86
  87     @Override
  88     protected InstanceIdentifier<Subnet> getWildCardPath() {
  89         return InstanceIdentifier.create(Neutron.class).child(Subnets.class).child(Subnet.class);
  90     }
  91
  92     @Override
  93     protected void update(InstanceIdentifier<Subnet> identifier, Subnet original, Subnet update) {
  94         LOG.trace("DhcpSubnetListener Update : Original dhcpstatus: {}, Updated dhcpstatus {}", original.isEnableDhcp(),
  95                 update.isEnableDhcp());
  96
  97         if (!Objects.equals(original.isEnableDhcp(), update.isEnableDhcp())) {
  98             // write api to get port list
  99             SubnetmapBuilder subnetmapBuilder = getSubnetMapBuilder(dataBroker, update.getUuid());
 100             List<Uuid> portList = subnetmapBuilder.getPortList();
 101             List<Uuid> directPortList = subnetmapBuilder.getDirectPortList();
 102
 103             if (update.isEnableDhcp()) {
 104                 if (null != portList) {
 105                     //Install Entries for neutron ports
 106                     installNeutronPortEntries(portList);
 107                 }
 108                 if (null != directPortList) {
 109                     //install Entries for direct ports
 110                     installDirectPortEntries(directPortList);
 111                 }
 112             } else {
 113                 if (null != portList) {
 114                     //UnInstall Entries for neutron ports
 115                     uninstallNeutronPortEntries(portList);
 116                 }
 117                 if (null != directPortList) {
 118                     //Uninstall Entries for direct ports
 119                     uninstallDirectPortEntries(directPortList);
 120                 }
 121             }
 122         }
 123     }
 124
 125     private void installNeutronPortEntries(List<Uuid> portList) {
 126         LOG.trace("DhcpSubnetListener installNeutronPortEntries : portList: {}", portList);
 127         for (Uuid portIntf : portList) {
 128             NodeConnectorId nodeConnectorId = getNodeConnectorIdForPortIntf(portIntf);
 129             BigInteger dpId = BigInteger.valueOf(MDSALUtil.getDpnIdFromPortName(nodeConnectorId));
 130             String interfaceName = portIntf.getValue();
 131             Port port = dhcpManager.getNeutronPort(interfaceName);
 132             String vmMacAddress = port.getMacAddress().getValue();
 133             //check whether any changes have happened
 134             LOG.trace("DhcpSubnetListener installNeutronPortEntries dpId: {} vmMacAddress : {}", dpId, vmMacAddress);
 135             //Bind the dhcp service when enabled
 136             ListenableFutures.addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION,
 137                 tx -> DhcpServiceUtils.bindDhcpService(interfaceName, NwConstants.DHCP_TABLE, tx)), LOG,
 138                 "Error writing to the datastore");
 139             //install the entries
 140             ListenableFutures.addErrorLogging(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 141                 tx -> dhcpManager.installDhcpEntries(dpId, vmMacAddress, tx)), LOG,
 142                 "Error writing to the datastore");
 143         }
 144     }
 145
 146     private void uninstallNeutronPortEntries(List<Uuid> portList) {
 147         LOG.trace("DhcpSubnetListener uninstallNeutronPortEntries : portList: {}", portList);
 148         for (Uuid portIntf : portList) {
 149             NodeConnectorId nodeConnectorId = getNodeConnectorIdForPortIntf(portIntf);
 150             BigInteger dpId = BigInteger.valueOf(MDSALUtil.getDpnIdFromPortName(nodeConnectorId));
 151             String interfaceName = portIntf.getValue();
 152             Port port = dhcpManager.getNeutronPort(interfaceName);
 153             String vmMacAddress = port.getMacAddress().getValue();
 154             //check whether any changes have happened
 155             LOG.trace("DhcpSubnetListener uninstallNeutronPortEntries dpId: {} vmMacAddress : {}",
 156                     dpId, vmMacAddress);
 157             //Unbind the dhcp service when disabled
 158             ListenableFutures.addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION,
 159                 tx -> DhcpServiceUtils.unbindDhcpService(interfaceName, tx)), LOG,
 160                 "Error writing to the datastore");
 161
 162             //uninstall the entries
 163             ListenableFutures.addErrorLogging(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 164                 tx -> dhcpManager.unInstallDhcpEntries(dpId, vmMacAddress, tx)), LOG,
 165                 "Error writing to the datastore");
 166         }
 167     }
 168
 169     private void installDirectPortEntries(List<Uuid> directPortList) {
 170         LOG.trace("DhcpSubnetListener installDirectPortEntries : directPortList: {}", directPortList);
 171         for (Uuid portIntf : directPortList) {
 172             Port port = dhcpManager.getNeutronPort(portIntf.getValue());
 173             String vmMacAddress = port.getMacAddress().getValue();
 174             Uuid networkId = port.getNetworkId();
 175             //install the entries on designated dpnId
 176             List<BigInteger> listOfDpns = DhcpServiceUtils.getListOfDpns(dataBroker);
 177             IpAddress tunnelIp = dhcpExternalTunnelManager.getTunnelIpBasedOnElan(networkId.getValue(), vmMacAddress);
 178             if (null == tunnelIp) {
 179                 LOG.warn("DhcpSubnetListener installDirectPortEntries tunnelIP is null for  port {}", portIntf);
 180                 continue;
 181             }
 182             BigInteger designatedDpnId =
 183                     dhcpExternalTunnelManager.readDesignatedSwitchesForExternalTunnel(tunnelIp, networkId.getValue());
 184             LOG.trace("CR-DHCP DhcpSubnetListener update Install DIRECT vmMacAddress: {} tunnelIp: {} "
 185                     + "designatedDpnId : {} ListOf Dpn: {}",
 186                     vmMacAddress, tunnelIp, designatedDpnId, listOfDpns);
 187             dhcpExternalTunnelManager.installDhcpFlowsForVms(tunnelIp, networkId.getValue(), listOfDpns,
 188                     designatedDpnId, vmMacAddress);
 189
 190         }
 191     }
 192
 193     private void uninstallDirectPortEntries(List<Uuid> directPortList) {
 194         LOG.trace("DhcpSubnetListener uninstallDirectPortEntries : directPortList: {}", directPortList);
 195         for (Uuid portIntf : directPortList) {
 196             Port port = dhcpManager.getNeutronPort(portIntf.getValue());
 197             String vmMacAddress = port.getMacAddress().getValue();
 198             Uuid networkId = port.getNetworkId();
 199             List<BigInteger> listOfDpns = DhcpServiceUtils.getListOfDpns(dataBroker);
 200             LOG.trace("DhcpSubnetListener uninstallDirectPortEntries  vmMacAddress: {} networkId: {} ListOf Dpn: {}",
 201                     vmMacAddress, networkId, listOfDpns);
 202             dhcpExternalTunnelManager.unInstallDhcpFlowsForVms(networkId.getValue(), listOfDpns, vmMacAddress);
 203         }
 204     }
 205
 206
 207     private NodeConnectorId getNodeConnectorIdForPortIntf(Uuid interfaceName) {
 208         LOG.trace("DhcpSubnetListener getNodeConnectorIdForPortIntf  interfaceName: {}", interfaceName);
 209         NodeConnectorId nodeConnectorId = null;
 210         InstanceIdentifier.InstanceIdentifierBuilder<Interface> idBuilder =
 211                 InstanceIdentifier.builder(InterfacesState.class)
 212                         .child(Interface.class,
 213                                 new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces
 214                                         .rev140508.interfaces.state.InterfaceKey(interfaceName.getValue()));
 215
 216         InstanceIdentifier<Interface> ifStateId = idBuilder.build();
 217
 218         Optional<Interface> ifStateOptional = MDSALUtil.read(LogicalDatastoreType.OPERATIONAL, ifStateId, dataBroker);
 219         Interface interfaceState = null;
 220         if (ifStateOptional.isPresent()) {
 221             interfaceState = ifStateOptional.get();
 222         }
 223         if (interfaceState != null) {
 224             List<String> ofportIds = interfaceState.getLowerLayerIf();
 225             nodeConnectorId = new NodeConnectorId(ofportIds.get(0));
 226             LOG.trace(
 227                     "DhcpSubnetListener getNodeConnectorIdForPortIntf returned nodeConnectorId {} for the interface {}",
 228                     nodeConnectorId.getValue(), interfaceName);
 229         }
 230         return nodeConnectorId;
 231     }
 232
 233     private SubnetmapBuilder getSubnetMapBuilder(DataBroker broker, Uuid subnetId) {
 234         SubnetmapBuilder builder = null ;
 235         InstanceIdentifier<Subnetmap> id = InstanceIdentifier.builder(Subnetmaps.class)
 236                 .child(Subnetmap.class, new SubnetmapKey(subnetId)).build();
 237         ReadOnlyTransaction tx = broker.newReadOnlyTransaction();
 238
 239         Optional<Subnetmap> sn ;
 240         try {
 241             sn = tx.read(LogicalDatastoreType.CONFIGURATION, id).get();
 242         } catch (InterruptedException | ExecutionException e) {
 243             throw new RuntimeException(e);
 244         } finally {
 245             tx.close();
 246         }
 247
 248         if (sn.isPresent()) {
 249             builder = new SubnetmapBuilder(sn.get());
 250         } else {
 251             builder = new SubnetmapBuilder().withKey(new SubnetmapKey(subnetId)).setId(subnetId);
 252         }
 253         return builder;
 254     }
 255
 256     @Override
 257     @PreDestroy
 258     public void close() {
 259         super.close();
 260         LOG.info("DhcpSubnetListener Closed");
 261     }
 262
 263     @Override
 264     protected DhcpSubnetListener getDataTreeChangeListener() {
 265         return DhcpSubnetListener.this;
 266     }
 267 }