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