southbound/southbound-impl/src/main/java/org/opendaylight/ovsdb/southbound/SouthboundMapper.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. 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.ovsdb.southbound;
   9
  10 import static org.opendaylight.ovsdb.southbound.SouthboundUtil.schemaMismatchLog;
  11
  12 import com.google.common.base.Joiner;
  13 import com.google.common.base.Preconditions;
  14 import com.google.common.base.Splitter;
  15 import com.google.common.collect.ImmutableBiMap;
  16 import com.google.common.net.InetAddresses;
  17 import java.net.Inet4Address;
  18 import java.net.Inet6Address;
  19 import java.net.InetAddress;
  20 import java.net.UnknownHostException;
  21 import java.util.ArrayList;
  22 import java.util.HashMap;
  23 import java.util.HashSet;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.Set;
  27 import org.opendaylight.ovsdb.lib.OvsdbClient;
  28 import org.opendaylight.ovsdb.lib.error.SchemaVersionMismatchException;
  29 import org.opendaylight.ovsdb.lib.notation.UUID;
  30 import org.opendaylight.ovsdb.lib.schema.DatabaseSchema;
  31 import org.opendaylight.ovsdb.lib.schema.typed.TyperUtils;
  32 import org.opendaylight.ovsdb.schema.openvswitch.Bridge;
  33 import org.opendaylight.ovsdb.schema.openvswitch.Controller;
  34 import org.opendaylight.ovsdb.schema.openvswitch.Manager;
  35 import org.opendaylight.ovsdb.schema.openvswitch.OpenVSwitch;
  36 import org.opendaylight.ovsdb.schema.openvswitch.Qos;
  37 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IetfInetUtil;
  38 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  39 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv6Address;
  40 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.PortNumber;
  41 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Uri;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.DatapathId;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.DatapathTypeBase;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.DatapathTypeSystem;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.InterfaceTypeBase;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAugmentation;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeProtocolBase;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeAugmentation;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.QosTypeBase;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ControllerEntry;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ControllerEntryBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ProtocolEntry;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ProtocolEntryBuilder;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ConnectionInfo;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ConnectionInfoBuilder;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ManagerEntry;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ManagerEntryBuilder;
  58 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  59 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  60 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  61 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  62 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  63 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  64 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  65 import org.slf4j.Logger;
  66 import org.slf4j.LoggerFactory;
  67
  68 public class SouthboundMapper {
  69     private static final Logger LOG = LoggerFactory.getLogger(SouthboundMapper.class);
  70     private static final String N_CONNECTIONS_STR = "n_connections";
  71
  72     public static IpAddress createIpAddress(InetAddress address) {
  73         IpAddress ip = null;
  74         if (address instanceof Inet4Address) {
  75             ip = createIpAddress((Inet4Address)address);
  76         } else if (address instanceof Inet6Address) {
  77             ip = createIpAddress((Inet6Address)address);
  78         }
  79         return ip;
  80     }
  81
  82     public static IpAddress createIpAddress(Inet4Address address) {
  83         return IetfInetUtil.INSTANCE.ipAddressFor(address);
  84     }
  85
  86     public static IpAddress createIpAddress(Inet6Address address) {
  87         Ipv6Address ipv6 = new Ipv6Address(address.getHostAddress());
  88         return new IpAddress(ipv6);
  89     }
  90
  91     public static InstanceIdentifier<Topology> createTopologyInstanceIdentifier() {
  92         return InstanceIdentifier
  93                 .create(NetworkTopology.class)
  94                 .child(Topology.class, new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID));
  95     }
  96
  97     public static InstanceIdentifier<OvsdbBridgeAugmentation>
  98         createBridgeInstanceIdentifier(OvsdbConnectionInstance client, String bridgeName) {
  99         return createInstanceIdentifier(client, bridgeName).augmentation(OvsdbBridgeAugmentation.class);
 100     }
 101
 102     public static InstanceIdentifier<Node> createInstanceIdentifier(NodeId nodeId) {
 103         return createTopologyInstanceIdentifier()
 104                 .child(Node.class,new NodeKey(nodeId));
 105     }
 106
 107     @SuppressWarnings("unchecked")
 108     public static InstanceIdentifier<Node> createInstanceIdentifier(OvsdbConnectionInstance client,Bridge bridge) {
 109         InstanceIdentifier<Node> iid;
 110         if (bridge.getExternalIdsColumn() != null
 111                 && bridge.getExternalIdsColumn().getData() != null
 112                 && bridge.getExternalIdsColumn().getData().containsKey(SouthboundConstants.IID_EXTERNAL_ID_KEY)) {
 113             String iidString = bridge.getExternalIdsColumn().getData().get(SouthboundConstants.IID_EXTERNAL_ID_KEY);
 114             iid = (InstanceIdentifier<Node>) SouthboundUtil.deserializeInstanceIdentifier(iidString);
 115         } else {
 116             iid = createInstanceIdentifier(client, bridge.getName());
 117         }
 118         return iid;
 119     }
 120
 121     @SuppressWarnings("unchecked")
 122     public static InstanceIdentifier<Node> createInstanceIdentifier(
 123             OvsdbConnectionInstance client, Controller controller, String bridgeName) {
 124         InstanceIdentifier<Node> iid;
 125         if (controller.getExternalIdsColumn() != null
 126                 && controller.getExternalIdsColumn().getData() != null
 127                 && controller.getExternalIdsColumn().getData().containsKey(SouthboundConstants.IID_EXTERNAL_ID_KEY)) {
 128             String iidString = controller.getExternalIdsColumn().getData().get(SouthboundConstants.IID_EXTERNAL_ID_KEY);
 129             iid = (InstanceIdentifier<Node>) SouthboundUtil.deserializeInstanceIdentifier(iidString);
 130         } else {
 131             iid = createInstanceIdentifier(client, bridgeName);
 132         }
 133         return iid;
 134     }
 135
 136     public static InstanceIdentifier<Node> createInstanceIdentifier(
 137             OvsdbConnectionInstance client, String bridgeName) {
 138         String nodeString = client.getNodeKey().getNodeId().getValue()
 139                 + "/bridge/" + bridgeName;
 140         NodeId nodeId = new NodeId(new Uri(nodeString));
 141         return createInstanceIdentifier(nodeId);
 142
 143     }
 144
 145     public static NodeId createManagedNodeId(InstanceIdentifier<Node> iid) {
 146         NodeKey nodeKey = iid.firstKeyOf(Node.class, NodeKey.class);
 147         return nodeKey.getNodeId();
 148     }
 149
 150     public static InetAddress createInetAddress(IpAddress ip) throws UnknownHostException {
 151         if (ip.getIpv4Address() != null) {
 152             return InetAddresses.forString(ip.getIpv4Address().getValue());
 153         } else if (ip.getIpv6Address() != null) {
 154             return InetAddress.getByName(ip.getIpv6Address().getValue());
 155         } else {
 156             throw new UnknownHostException("IP Address has no value");
 157         }
 158     }
 159
 160     public static DatapathId createDatapathId(Bridge bridge) {
 161         Preconditions.checkNotNull(bridge);
 162         if (bridge.getDatapathIdColumn() == null) {
 163             return null;
 164         } else {
 165             return createDatapathId(bridge.getDatapathIdColumn().getData());
 166         }
 167     }
 168
 169     public static DatapathId createDatapathId(Set<String> dpids) {
 170         Preconditions.checkNotNull(dpids);
 171         if (dpids.isEmpty()) {
 172             return null;
 173         } else {
 174             String[] dpidArray = new String[dpids.size()];
 175             dpids.toArray(dpidArray);
 176             return createDatapathId(dpidArray[0]);
 177         }
 178     }
 179
 180     public static DatapathId createDatapathId(String dpid) {
 181         Preconditions.checkNotNull(dpid);
 182         DatapathId datapath;
 183         if (dpid.matches("^[0-9a-fA-F]{16}")) {
 184             Splitter splitter = Splitter.fixedLength(2);
 185             Joiner joiner = Joiner.on(":");
 186             datapath = new DatapathId(joiner.join(splitter.split(dpid)));
 187         } else {
 188             datapath = new DatapathId(dpid);
 189         }
 190         return datapath;
 191     }
 192
 193     public static String createDatapathType(OvsdbBridgeAugmentation mdsalbridge) {
 194         String datapathtype = SouthboundConstants.DATAPATH_TYPE_MAP.get(DatapathTypeSystem.class);
 195
 196         if (mdsalbridge.getDatapathType() != null && !mdsalbridge.getDatapathType().equals(DatapathTypeBase.class)) {
 197             datapathtype = SouthboundConstants.DATAPATH_TYPE_MAP.get(mdsalbridge.getDatapathType());
 198             if (datapathtype == null) {
 199                 throw new IllegalArgumentException("Unknown datapath type " + mdsalbridge.getDatapathType().getName());
 200             }
 201         }
 202         return datapathtype;
 203     }
 204
 205     public static  Class<? extends DatapathTypeBase> createDatapathType(String type) {
 206         Preconditions.checkNotNull(type);
 207         if (type.isEmpty()) {
 208             return DatapathTypeSystem.class;
 209         } else {
 210             ImmutableBiMap<String, Class<? extends DatapathTypeBase>> mapper =
 211                     SouthboundConstants.DATAPATH_TYPE_MAP.inverse();
 212             return mapper.get(type);
 213         }
 214     }
 215
 216     public static Set<String> createOvsdbBridgeProtocols(OvsdbBridgeAugmentation ovsdbBridgeNode) {
 217         Set<String> protocols = new HashSet<>();
 218         if (ovsdbBridgeNode.getProtocolEntry() != null && ovsdbBridgeNode.getProtocolEntry().size() > 0) {
 219             for (ProtocolEntry protocol : ovsdbBridgeNode.getProtocolEntry()) {
 220                 if (SouthboundConstants.OVSDB_PROTOCOL_MAP.get(protocol.getProtocol()) != null) {
 221                     protocols.add(SouthboundConstants.OVSDB_PROTOCOL_MAP.get(protocol.getProtocol()));
 222                 } else {
 223                     throw new IllegalArgumentException("Unknown protocol " + protocol.getProtocol());
 224                 }
 225             }
 226         }
 227         return protocols;
 228     }
 229
 230     public static  Class<? extends InterfaceTypeBase> createInterfaceType(String type) {
 231         Preconditions.checkNotNull(type);
 232         return SouthboundConstants.OVSDB_INTERFACE_TYPE_MAP.get(type);
 233     }
 234
 235     public static String createOvsdbInterfaceType(Class<? extends InterfaceTypeBase> mdsaltype) {
 236         Preconditions.checkNotNull(mdsaltype);
 237         ImmutableBiMap<Class<? extends InterfaceTypeBase>, String> mapper =
 238                 SouthboundConstants.OVSDB_INTERFACE_TYPE_MAP.inverse();
 239         return mapper.get(mdsaltype);
 240     }
 241
 242     public static List<ProtocolEntry> createMdsalProtocols(Bridge bridge) {
 243         Set<String> protocols = null;
 244         try {
 245             protocols = bridge.getProtocolsColumn().getData();
 246         } catch (SchemaVersionMismatchException e) {
 247             schemaMismatchLog("protocols", "Bridge", e);
 248         }
 249         List<ProtocolEntry> protocolList = new ArrayList<>();
 250         if (protocols != null && protocols.size() > 0) {
 251             ImmutableBiMap<String, Class<? extends OvsdbBridgeProtocolBase>> mapper =
 252                     SouthboundConstants.OVSDB_PROTOCOL_MAP.inverse();
 253             for (String protocol : protocols) {
 254                 if (protocol != null && mapper.get(protocol) != null) {
 255                     protocolList.add(new ProtocolEntryBuilder().setProtocol(mapper.get(protocol)).build());
 256                 }
 257             }
 258         }
 259         return protocolList;
 260     }
 261
 262     /**
 263      * Create the {@link ControllerEntry} list given an OVSDB {@link Bridge}
 264      * and {@link Controller} rows.
 265      *
 266      * @param bridge the {@link Bridge} to update
 267      * @param updatedControllerRows the list of {@link Controller} controllers with updates
 268      * @return list of {@link ControllerEntry} entries
 269      */
 270     public static List<ControllerEntry> createControllerEntries(Bridge bridge,
 271                                                                 Map<UUID, Controller> updatedControllerRows) {
 272
 273         LOG.debug("createControllerEntries Bridge: {}\n, updatedControllerRows: {}",
 274                 bridge, updatedControllerRows);
 275         final Set<UUID> controllerUuids = bridge.getControllerColumn().getData();
 276         final List<ControllerEntry> controllerEntries = new ArrayList<>();
 277         for (UUID controllerUuid : controllerUuids ) {
 278             final Controller controller = updatedControllerRows.get(controllerUuid);
 279             addControllerEntries(controllerEntries, controller);
 280         }
 281         LOG.debug("controllerEntries: {}", controllerEntries);
 282         return controllerEntries;
 283     }
 284
 285     /**
 286      * Create the {@link ControllerEntry} list given an MDSAL {@link Node} bridge
 287      * and {@link Controller} rows.
 288      *
 289      * @param bridgeNode the {@link Node} to update
 290      * @param updatedControllerRows the list of {@link Controller} controllers with updates
 291      * @return list of {@link ControllerEntry} entries
 292      */
 293     public static List<ControllerEntry> createControllerEntries(Node bridgeNode,
 294                                                                 Map<UUID, Controller> updatedControllerRows) {
 295
 296         LOG.debug("createControllerEntries Bridge 2: {}\n, updatedControllerRows: {}",
 297                 bridgeNode, updatedControllerRows);
 298         final List<ControllerEntry> controllerEntriesCreated = new ArrayList<>();
 299         final OvsdbBridgeAugmentation ovsdbBridgeAugmentation =
 300                 bridgeNode.getAugmentation(OvsdbBridgeAugmentation.class);
 301         if (ovsdbBridgeAugmentation == null) {
 302             return controllerEntriesCreated;
 303         }
 304
 305         final List<ControllerEntry> controllerEntries = ovsdbBridgeAugmentation.getControllerEntry();
 306         if (controllerEntries != null) {
 307             for (ControllerEntry controllerEntry : controllerEntries) {
 308                 final Controller controller = updatedControllerRows.get(
 309                         new UUID(controllerEntry.getControllerUuid().getValue()));
 310                 addControllerEntries(controllerEntriesCreated, controller);
 311             }
 312         }
 313         LOG.debug("controllerEntries: {}", controllerEntriesCreated);
 314         return controllerEntriesCreated;
 315     }
 316
 317     /**
 318      * Add the OVSDB {@link Controller} updates to the MDSAL {@link ControllerEntry} list.
 319      *
 320      * @param controllerEntries the list of {@link ControllerEntry} to update
 321      * @param controller the updated OVSDB {@link Controller}
 322      */
 323     public static void addControllerEntries(List<ControllerEntry> controllerEntries,
 324                                             final Controller controller) {
 325
 326         if (controller != null && controller.getTargetColumn() != null) {
 327             final String targetString = controller.getTargetColumn().getData();
 328             final org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid uuid =
 329                     new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang
 330                             .ietf.yang.types.rev130715.Uuid(controller.getUuid().toString());
 331
 332             controllerEntries.add(new ControllerEntryBuilder()
 333                     .setTarget(new Uri(targetString))
 334                     .setIsConnected(controller.getIsConnectedColumn().getData())
 335                     .setControllerUuid(uuid).build());
 336         }
 337     }
 338
 339     public static Map<UUID, Controller> createOvsdbController(OvsdbBridgeAugmentation omn,DatabaseSchema dbSchema) {
 340         List<ControllerEntry> controllerEntries = omn.getControllerEntry();
 341         Map<UUID,Controller> controllerMap = new HashMap<>();
 342         if (controllerEntries != null && !controllerEntries.isEmpty()) {
 343             for (ControllerEntry controllerEntry : controllerEntries) {
 344                 String controllerNamedUuid = "Controller_" + getRandomUuid();
 345                 Controller controller = TyperUtils.getTypedRowWrapper(dbSchema, Controller.class);
 346                 controller.setTarget(controllerEntry.getTarget().getValue());
 347                 controllerMap.put(new UUID(controllerNamedUuid), controller);
 348             }
 349         }
 350         return controllerMap;
 351     }
 352
 353     public static String getRandomUuid() {
 354         return "Random_" + java.util.UUID.randomUUID().toString().replace("-", "");
 355     }
 356
 357     public static ConnectionInfo createConnectionInfo(OvsdbClient client) {
 358         ConnectionInfoBuilder connectionInfoBuilder = new ConnectionInfoBuilder();
 359         connectionInfoBuilder.setRemoteIp(createIpAddress(client.getConnectionInfo().getRemoteAddress()));
 360         connectionInfoBuilder.setRemotePort(new PortNumber(client.getConnectionInfo().getRemotePort()));
 361         connectionInfoBuilder.setLocalIp(createIpAddress(client.getConnectionInfo().getLocalAddress()));
 362         connectionInfoBuilder.setLocalPort(new PortNumber(client.getConnectionInfo().getLocalPort()));
 363         return connectionInfoBuilder.build();
 364     }
 365
 366     public static ConnectionInfo suppressLocalIpPort(ConnectionInfo connectionInfo) {
 367         ConnectionInfoBuilder connectionInfoBuilder = new ConnectionInfoBuilder();
 368         connectionInfoBuilder.setRemoteIp(connectionInfo.getRemoteIp());
 369         connectionInfoBuilder.setRemotePort(connectionInfo.getRemotePort());
 370         return connectionInfoBuilder.build();
 371     }
 372
 373     /**
 374      * Create the {@link ManagerEntry} list given an OVSDB {@link OpenVSwitch}
 375      * and {@link Manager} rows.
 376      *
 377      * @param ovsdbNode the {@link OpenVSwitch} to update
 378      * @param updatedManagerRows the list of {@link Manager} managers with updates
 379      * @return list of {@link ManagerEntry} entries
 380      */
 381     public static List<ManagerEntry> createManagerEntries(OpenVSwitch ovsdbNode,
 382                                                                 Map<UUID, Manager> updatedManagerRows) {
 383
 384         LOG.debug("createManagerEntries OpenVSwitch: {}\n, updatedManagerRows: {}",
 385                 ovsdbNode, updatedManagerRows);
 386         final Set<UUID> managerUuids = ovsdbNode.getManagerOptionsColumn().getData();
 387         final List<ManagerEntry> managerEntries = new ArrayList<>();
 388         for (UUID managerUuid : managerUuids) {
 389             final Manager manager = updatedManagerRows.get(managerUuid);
 390             addManagerEntries(managerEntries, manager);
 391         }
 392         LOG.debug("managerEntries: {}", managerEntries);
 393         return managerEntries;
 394     }
 395
 396     /**
 397      * Create the {@link ManagerEntry} list given an MDSAL {@link Node} ovsdbNode
 398      * and {@link Manager} rows.
 399      *
 400      * @param ovsdbNode the {@link Node} to update
 401      * @param updatedManagerRows the list of {@link Manager} managers with updates
 402      * @return list of {@link ManagerEntry} entries
 403      */
 404     public static List<ManagerEntry> createManagerEntries(Node ovsdbNode,
 405                                                                 Map<Uri, Manager> updatedManagerRows) {
 406
 407         LOG.debug("createManagerEntries based on OVSDB Node: {}\n, updatedManagerRows: {}",
 408                 ovsdbNode, updatedManagerRows);
 409         final List<ManagerEntry> managerEntriesCreated = new ArrayList<>();
 410         final OvsdbNodeAugmentation ovsdbNodeAugmentation =
 411                 ovsdbNode.getAugmentation(OvsdbNodeAugmentation.class);
 412         if (ovsdbNodeAugmentation == null) {
 413             return managerEntriesCreated;
 414         }
 415
 416         final List<ManagerEntry> managerEntries = ovsdbNodeAugmentation.getManagerEntry();
 417         if (managerEntries != null) {
 418             for (ManagerEntry managerEntry : managerEntries) {
 419                 final Manager manager = updatedManagerRows.get(managerEntry.getTarget());
 420                 addManagerEntries(managerEntriesCreated, manager);
 421             }
 422         }
 423         LOG.debug("managerEntries: {}", managerEntriesCreated);
 424         return managerEntriesCreated;
 425     }
 426
 427     /**
 428      * Add the OVSDB {@link Manager} updates to the MDSAL {@link ManagerEntry} list.
 429      *
 430      * @param managerEntries the list of {@link ManagerEntry} to update
 431      * @param manager the updated OVSDB {@link Manager}
 432      */
 433     public static void addManagerEntries(List<ManagerEntry> managerEntries,
 434                                             final Manager manager) {
 435
 436         if (manager != null && manager.getTargetColumn() != null) {
 437             long numberOfConnections = 0;
 438             final String targetString = manager.getTargetColumn().getData();
 439
 440             final Map<String, String> statusAttributeMap = manager.getStatusColumn().getData();
 441             if (statusAttributeMap.containsKey(N_CONNECTIONS_STR)) {
 442                 String numberOfConnectionValueStr = statusAttributeMap.get(N_CONNECTIONS_STR);
 443                 numberOfConnections = Integer.parseInt(numberOfConnectionValueStr);
 444             } else {
 445                 final boolean isConnected = manager.getIsConnectedColumn().getData();
 446                 if (isConnected) {
 447                     numberOfConnections = 1;
 448                 }
 449             }
 450             managerEntries.add(new ManagerEntryBuilder()
 451                     .setTarget(new Uri(targetString))
 452                     .setNumberOfConnections(numberOfConnections)
 453                     .setConnected(manager.getIsConnectedColumn().getData()).build());
 454         }
 455     }
 456
 457     /**
 458      * Return the MD-SAL QoS type class corresponding to the QoS type {@link Qos}.
 459      *
 460      * @param type the QoS type to match {@link String}
 461      * @return class matching the input QoS type {@link QosTypeBase}
 462      */
 463     public static  Class<? extends QosTypeBase> createQosType(String type) {
 464         Preconditions.checkNotNull(type);
 465         if (type.isEmpty()) {
 466             LOG.info("QoS type not supplied");
 467             return QosTypeBase.class;
 468         } else {
 469             ImmutableBiMap<String, Class<? extends QosTypeBase>> mapper =
 470                     SouthboundConstants.QOS_TYPE_MAP.inverse();
 471             if (mapper.get(type) == null) {
 472                 LOG.info("QoS type not found in model: {}", type);
 473                 return QosTypeBase.class;
 474             } else {
 475                 return mapper.get(type);
 476             }
 477         }
 478     }
 479
 480     public static String createQosType(Class<? extends QosTypeBase> qosTypeClass) {
 481         String qosType = SouthboundConstants.QOS_TYPE_MAP.get(QosTypeBase.class);
 482
 483         if (qosTypeClass != null && !qosTypeClass.equals(QosTypeBase.class)) {
 484             qosType = SouthboundConstants.QOS_TYPE_MAP.get(qosTypeClass);
 485             if (qosType == null) {
 486                 throw new IllegalArgumentException("Unknown QoS type" + qosTypeClass.getName());
 487             }
 488         }
 489         return qosType;
 490     }
 491
 492
 493     public static InstanceIdentifier<Node> getInstanceIdentifier(OpenVSwitch ovs) {
 494         if (ovs.getExternalIdsColumn() != null
 495                 && ovs.getExternalIdsColumn().getData() != null
 496                 && ovs.getExternalIdsColumn().getData().containsKey(SouthboundConstants.IID_EXTERNAL_ID_KEY)) {
 497             String iidString = ovs.getExternalIdsColumn().getData().get(SouthboundConstants.IID_EXTERNAL_ID_KEY);
 498             return (InstanceIdentifier<Node>) SouthboundUtil.deserializeInstanceIdentifier(iidString);
 499         } else {
 500             String nodeString = SouthboundConstants.OVSDB_URI_PREFIX + "://" + SouthboundConstants.UUID + "/"
 501                     + ovs.getUuid().toString();
 502             NodeId nodeId = new NodeId(new Uri(nodeString));
 503             NodeKey nodeKey = new NodeKey(nodeId);
 504             return InstanceIdentifier.builder(NetworkTopology.class)
 505                     .child(Topology.class,new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID))
 506                     .child(Node.class,nodeKey)
 507                     .build();
 508         }
 509     }
 510 }