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 java.net.Inet4Address;
  11 import java.net.Inet6Address;
  12 import java.net.InetAddress;
  13 import java.net.UnknownHostException;
  14 import java.util.ArrayList;
  15 import java.util.HashMap;
  16 import java.util.HashSet;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.Set;
  20
  21 import org.opendaylight.ovsdb.lib.OvsdbClient;
  22 import org.opendaylight.ovsdb.lib.error.SchemaVersionMismatchException;
  23 import org.opendaylight.ovsdb.lib.notation.UUID;
  24 import org.opendaylight.ovsdb.lib.schema.DatabaseSchema;
  25 import org.opendaylight.ovsdb.lib.schema.typed.TyperUtils;
  26 import org.opendaylight.ovsdb.schema.openvswitch.Bridge;
  27 import org.opendaylight.ovsdb.schema.openvswitch.Controller;
  28 import org.opendaylight.ovsdb.schema.openvswitch.Manager;
  29 import org.opendaylight.ovsdb.schema.openvswitch.OpenVSwitch;
  30 import org.opendaylight.ovsdb.schema.openvswitch.Qos;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IetfInetUtil;
  32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Address;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv6Address;
  35 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.PortNumber;
  36 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Uri;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.DatapathId;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.DatapathTypeBase;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.DatapathTypeSystem;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.InterfaceTypeBase;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAugmentation;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeProtocolBase;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeAugmentation;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.QosTypeBase;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ControllerEntry;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ControllerEntryBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ProtocolEntry;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ProtocolEntryBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ConnectionInfo;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ConnectionInfoBuilder;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ManagerEntry;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ManagerEntryBuilder;
  53 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  54 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  55 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  56 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  57 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  58 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  59 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  60 import org.slf4j.Logger;
  61 import org.slf4j.LoggerFactory;
  62
  63 import com.google.common.base.Joiner;
  64 import com.google.common.base.Preconditions;
  65 import com.google.common.base.Splitter;
  66 import com.google.common.collect.ImmutableBiMap;
  67 import com.google.common.net.InetAddresses;
  68
  69 public class SouthboundMapper {
  70     private static final Logger LOG = LoggerFactory.getLogger(SouthboundMapper.class);
  71     private static final String N_CONNECTIONS_STR = "n_connections";
  72
  73     public static IpAddress createIpAddress(InetAddress address) {
  74         IpAddress ip = null;
  75         if (address instanceof Inet4Address) {
  76             ip = createIpAddress((Inet4Address)address);
  77         } else if (address instanceof Inet6Address) {
  78             ip = createIpAddress((Inet6Address)address);
  79         }
  80         return ip;
  81     }
  82
  83     public static IpAddress createIpAddress(Inet4Address address) {
  84         return IetfInetUtil.INSTANCE.ipAddressFor(address);
  85     }
  86
  87     public static IpAddress createIpAddress(Inet6Address address) {
  88         Ipv6Address ipv6 = new Ipv6Address(address.getHostAddress());
  89         return new IpAddress(ipv6);
  90     }
  91
  92     public static InstanceIdentifier<Node> createInstanceIdentifier(NodeId nodeId) {
  93         return InstanceIdentifier
  94                 .create(NetworkTopology.class)
  95                 .child(Topology.class, new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID))
  96                 .child(Node.class,new NodeKey(nodeId));
  97     }
  98
  99     public static InstanceIdentifier<Node> createInstanceIdentifier(OvsdbConnectionInstance client,Bridge bridge) {
 100         InstanceIdentifier<Node> iid;
 101         if (bridge.getExternalIdsColumn() != null
 102                 && bridge.getExternalIdsColumn().getData() != null
 103                 && bridge.getExternalIdsColumn().getData().containsKey(SouthboundConstants.IID_EXTERNAL_ID_KEY)) {
 104             String iidString = bridge.getExternalIdsColumn().getData().get(SouthboundConstants.IID_EXTERNAL_ID_KEY);
 105             iid = (InstanceIdentifier<Node>) SouthboundUtil.deserializeInstanceIdentifier(iidString);
 106         } else {
 107             String nodeString = client.getNodeKey().getNodeId().getValue()
 108                     + "/bridge/" + bridge.getName();
 109             NodeId nodeId = new NodeId(new Uri(nodeString));
 110             NodeKey nodeKey = new NodeKey(nodeId);
 111             iid = InstanceIdentifier.builder(NetworkTopology.class)
 112                     .child(Topology.class,new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID))
 113                     .child(Node.class,nodeKey)
 114                     .build();
 115         }
 116         return iid;
 117     }
 118
 119     public static InstanceIdentifier<Node> createInstanceIdentifier(
 120             OvsdbConnectionInstance client, Controller controller, String bridgeName) {
 121         InstanceIdentifier<Node> iid;
 122         if (controller.getExternalIdsColumn() != null
 123                 && controller.getExternalIdsColumn().getData() != null
 124                 && controller.getExternalIdsColumn().getData().containsKey(SouthboundConstants.IID_EXTERNAL_ID_KEY)) {
 125             String iidString = controller.getExternalIdsColumn().getData().get(SouthboundConstants.IID_EXTERNAL_ID_KEY);
 126             iid = (InstanceIdentifier<Node>) SouthboundUtil.deserializeInstanceIdentifier(iidString);
 127         } else {
 128             // TODO retrieve bridge name
 129             String nodeString = client.getNodeKey().getNodeId().getValue()
 130                     + "/bridge/" + bridgeName;
 131             NodeId nodeId = new NodeId(new Uri(nodeString));
 132             NodeKey nodeKey = new NodeKey(nodeId);
 133             iid = InstanceIdentifier.builder(NetworkTopology.class)
 134                     .child(Topology.class,new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID))
 135                     .child(Node.class,nodeKey)
 136                     .build();
 137         }
 138         return iid;
 139     }
 140
 141     public static NodeId createManagedNodeId(InstanceIdentifier<Node> iid) {
 142         NodeKey nodeKey = iid.firstKeyOf(Node.class, NodeKey.class);
 143         return nodeKey.getNodeId();
 144     }
 145
 146     public static InetAddress createInetAddress(IpAddress ip) throws UnknownHostException {
 147         if (ip.getIpv4Address() != null) {
 148             return InetAddresses.forString(ip.getIpv4Address().getValue());
 149         } else if (ip.getIpv6Address() != null) {
 150             return InetAddress.getByName(ip.getIpv6Address().getValue());
 151         } else {
 152             throw new UnknownHostException("IP Address has no value");
 153         }
 154     }
 155
 156     public static DatapathId createDatapathId(Bridge bridge) {
 157         Preconditions.checkNotNull(bridge);
 158         if (bridge.getDatapathIdColumn() == null) {
 159             return null;
 160         } else {
 161             return createDatapathId(bridge.getDatapathIdColumn().getData());
 162         }
 163     }
 164
 165     public static DatapathId createDatapathId(Set<String> dpids) {
 166         Preconditions.checkNotNull(dpids);
 167         if (dpids.isEmpty()) {
 168             return null;
 169         } else {
 170             String[] dpidArray = new String[dpids.size()];
 171             dpids.toArray(dpidArray);
 172             return createDatapathId(dpidArray[0]);
 173         }
 174     }
 175
 176     public static String createDatapathType(OvsdbBridgeAugmentation mdsalbridge) {
 177         String datapathtype = SouthboundConstants.DATAPATH_TYPE_MAP.get(DatapathTypeSystem.class);
 178
 179         if (mdsalbridge.getDatapathType() != null && !mdsalbridge.getDatapathType().equals(DatapathTypeBase.class)) {
 180             datapathtype = SouthboundConstants.DATAPATH_TYPE_MAP.get(mdsalbridge.getDatapathType());
 181             if (datapathtype == null) {
 182                 throw new IllegalArgumentException("Unknown datapath type " + mdsalbridge.getDatapathType().getName());
 183             }
 184         }
 185         return datapathtype;
 186     }
 187
 188     public static  Class<? extends DatapathTypeBase> createDatapathType(String type) {
 189         Preconditions.checkNotNull(type);
 190         if (type.isEmpty()) {
 191             return DatapathTypeSystem.class;
 192         } else {
 193             ImmutableBiMap<String, Class<? extends DatapathTypeBase>> mapper =
 194                     SouthboundConstants.DATAPATH_TYPE_MAP.inverse();
 195             return mapper.get(type);
 196         }
 197     }
 198
 199     public static DatapathId createDatapathId(String dpid) {
 200         Preconditions.checkNotNull(dpid);
 201         DatapathId datapath;
 202         if (dpid.matches("^[0-9a-fA-F]{16}")) {
 203             Splitter splitter = Splitter.fixedLength(2);
 204             Joiner joiner = Joiner.on(":");
 205             datapath = new DatapathId(joiner.join(splitter.split(dpid)));
 206         } else {
 207             datapath = new DatapathId(dpid);
 208         }
 209         return datapath;
 210     }
 211
 212     public static Set<String> createOvsdbBridgeProtocols(OvsdbBridgeAugmentation ovsdbBridgeNode) {
 213         Set<String> protocols = new HashSet<>();
 214         if (ovsdbBridgeNode.getProtocolEntry() != null && ovsdbBridgeNode.getProtocolEntry().size() > 0) {
 215             for (ProtocolEntry protocol : ovsdbBridgeNode.getProtocolEntry()) {
 216                 if (SouthboundConstants.OVSDB_PROTOCOL_MAP.get(protocol.getProtocol()) != null) {
 217                     protocols.add(SouthboundConstants.OVSDB_PROTOCOL_MAP.get(protocol.getProtocol()));
 218                 } else {
 219                     throw new IllegalArgumentException("Unknown protocol " + protocol.getProtocol());
 220                 }
 221             }
 222         }
 223         return protocols;
 224     }
 225
 226     public static  Class<? extends InterfaceTypeBase> createInterfaceType(String type) {
 227         Preconditions.checkNotNull(type);
 228         return SouthboundConstants.OVSDB_INTERFACE_TYPE_MAP.get(type);
 229     }
 230
 231     public static String createOvsdbInterfaceType(Class<? extends InterfaceTypeBase> mdsaltype) {
 232         Preconditions.checkNotNull(mdsaltype);
 233         ImmutableBiMap<Class<? extends InterfaceTypeBase>, String> mapper =
 234                 SouthboundConstants.OVSDB_INTERFACE_TYPE_MAP.inverse();
 235         return mapper.get(mdsaltype);
 236     }
 237
 238     public static List<ProtocolEntry> createMdsalProtocols(Bridge bridge) {
 239         Set<String> protocols = null;
 240         try {
 241             protocols = bridge.getProtocolsColumn().getData();
 242         } catch (SchemaVersionMismatchException e) {
 243             // We don't care about the exception stack trace here
 244             LOG.warn("protocols not supported by this version of ovsdb", e);
 245         }
 246         List<ProtocolEntry> protocolList = new ArrayList<>();
 247         if (protocols != null && protocols.size() > 0) {
 248             ImmutableBiMap<String, Class<? extends OvsdbBridgeProtocolBase>> mapper =
 249                     SouthboundConstants.OVSDB_PROTOCOL_MAP.inverse();
 250             for (String protocol : protocols) {
 251                 if (protocol != null && mapper.get(protocol) != null) {
 252                     protocolList.add(new ProtocolEntryBuilder().
 253                             setProtocol(mapper.get(protocol)).build());
 254                 }
 255             }
 256         }
 257         return protocolList;
 258     }
 259
 260     /**
 261      * Create the {@link ControllerEntry} list given an OVSDB {@link Bridge}
 262      * and {@link Controller} rows.
 263      *
 264      * @param bridge the {@link Bridge} to update
 265      * @param updatedControllerRows the list of {@link Controller} controllers with updates
 266      * @return list of {@link ControllerEntry} entries
 267      */
 268     public static List<ControllerEntry> createControllerEntries(Bridge bridge,
 269                                                                 Map<UUID, Controller> updatedControllerRows) {
 270
 271         LOG.debug("createControllerEntries Bridge: {}\n, updatedControllerRows: {}",
 272                 bridge, updatedControllerRows);
 273         final Set<UUID> controllerUUIDs = bridge.getControllerColumn().getData();
 274         final List<ControllerEntry> controllerEntries = new ArrayList<>();
 275         for (UUID controllerUUID : controllerUUIDs ) {
 276             final Controller controller = updatedControllerRows.get(controllerUUID);
 277             addControllerEntries(controllerEntries, controller);
 278         }
 279         LOG.debug("controllerEntries: {}", controllerEntries);
 280         return controllerEntries;
 281     }
 282
 283     /**
 284      * Create the {@link ControllerEntry} list given an MDSAL {@link Node} bridge
 285      * and {@link Controller} rows.
 286      *
 287      * @param bridgeNode the {@link Node} to update
 288      * @param updatedControllerRows the list of {@link Controller} controllers with updates
 289      * @return list of {@link ControllerEntry} entries
 290      */
 291     public static List<ControllerEntry> createControllerEntries(Node bridgeNode,
 292                                                                 Map<UUID, Controller> updatedControllerRows) {
 293
 294         LOG.debug("createControllerEntries Bridge 2: {}\n, updatedControllerRows: {}",
 295                 bridgeNode, updatedControllerRows);
 296         final List<ControllerEntry> controllerEntriesCreated = new ArrayList<>();
 297         final OvsdbBridgeAugmentation ovsdbBridgeAugmentation =
 298                 bridgeNode.getAugmentation(OvsdbBridgeAugmentation.class);
 299         if (ovsdbBridgeAugmentation == null) {
 300             return controllerEntriesCreated;
 301         }
 302
 303         final List<ControllerEntry> controllerEntries = ovsdbBridgeAugmentation.getControllerEntry();
 304         if (controllerEntries != null) {
 305             for (ControllerEntry controllerEntry : controllerEntries) {
 306                 final Controller controller = updatedControllerRows.get(
 307                         new UUID(controllerEntry.getControllerUuid().getValue()));
 308                 addControllerEntries(controllerEntriesCreated, controller);
 309             }
 310         }
 311         LOG.debug("controllerEntries: {}", controllerEntriesCreated);
 312         return controllerEntriesCreated;
 313     }
 314
 315     /**
 316      * Add the OVSDB {@link Controller} updates to the MDSAL {@link ControllerEntry} list.
 317      *
 318      * @param controllerEntries the list of {@link ControllerEntry} to update
 319      * @param controller the updated OVSDB {@link Controller}
 320      */
 321     public static void addControllerEntries(List<ControllerEntry> controllerEntries,
 322                                             final Controller controller) {
 323
 324         if (controller != null && controller.getTargetColumn() != null) {
 325             final String targetString = controller.getTargetColumn().getData();
 326             final org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid uuid =
 327                     new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang
 328                             .ietf.yang.types.rev130715.Uuid(controller.getUuid().toString());
 329
 330             controllerEntries.add(new ControllerEntryBuilder()
 331                     .setTarget(new Uri(targetString))
 332                     .setIsConnected(controller.getIsConnectedColumn().getData())
 333                     .setControllerUuid(uuid).build());
 334         }
 335     }
 336
 337     public static Map<UUID, Controller> createOvsdbController(OvsdbBridgeAugmentation omn,DatabaseSchema dbSchema) {
 338         List<ControllerEntry> controllerEntries = omn.getControllerEntry();
 339         Map<UUID,Controller> controllerMap = new HashMap<>();
 340         if (controllerEntries != null && !controllerEntries.isEmpty()) {
 341             for (ControllerEntry controllerEntry : controllerEntries) {
 342                 String controllerNamedUUID = "Controller_" + getRandomUUID();
 343                 Controller controller = TyperUtils.getTypedRowWrapper(dbSchema, Controller.class);
 344                 controller.setTarget(controllerEntry.getTarget().getValue());
 345                 controllerMap.put(new UUID(controllerNamedUUID), controller);
 346             }
 347         }
 348         return controllerMap;
 349     }
 350
 351     public static String getRandomUUID() {
 352         return "Random_" + java.util.UUID.randomUUID().toString().replace("-", "");
 353     }
 354     public static ConnectionInfo createConnectionInfo(OvsdbClient client) {
 355         ConnectionInfoBuilder connectionInfoBuilder = new ConnectionInfoBuilder();
 356         connectionInfoBuilder.setRemoteIp(createIpAddress(client.getConnectionInfo().getRemoteAddress()));
 357         connectionInfoBuilder.setRemotePort(new PortNumber(client.getConnectionInfo().getRemotePort()));
 358         connectionInfoBuilder.setLocalIp(createIpAddress(client.getConnectionInfo().getLocalAddress()));
 359         connectionInfoBuilder.setLocalPort(new PortNumber(client.getConnectionInfo().getLocalPort()));
 360         return connectionInfoBuilder.build();
 361     }
 362
 363     public static ConnectionInfo suppressLocalIpPort(ConnectionInfo connectionInfo) {
 364         ConnectionInfoBuilder connectionInfoBuilder = new ConnectionInfoBuilder();
 365         connectionInfoBuilder.setRemoteIp(connectionInfo.getRemoteIp());
 366         connectionInfoBuilder.setRemotePort(connectionInfo.getRemotePort());
 367         return connectionInfoBuilder.build();
 368     }
 369
 370     /**
 371      * Create the {@link ManagerEntry} list given an OVSDB {@link OpenVSwitch}
 372      * and {@link Manager} rows.
 373      *
 374      * @param ovsdbNode the {@link OpenVSwitch} to update
 375      * @param updatedManagerRows the list of {@link Manager} managers with updates
 376      * @return list of {@link ManagerEntry} entries
 377      */
 378     public static List<ManagerEntry> createManagerEntries(OpenVSwitch ovsdbNode,
 379                                                                 Map<UUID, Manager> updatedManagerRows) {
 380
 381         LOG.debug("createManagerEntries OpenVSwitch: {}\n, updatedManagerRows: {}",
 382                 ovsdbNode, updatedManagerRows);
 383         final Set<UUID> managerUUIDs = ovsdbNode.getManagerOptionsColumn().getData();
 384         final List<ManagerEntry> managerEntries = new ArrayList<>();
 385         for (UUID managerUUID : managerUUIDs ) {
 386             final Manager manager = updatedManagerRows.get(managerUUID);
 387             addManagerEntries(managerEntries, manager);
 388         }
 389         LOG.debug("managerEntries: {}", managerEntries);
 390         return managerEntries;
 391     }
 392
 393     /**
 394      * Create the {@link ManagerEntry} list given an MDSAL {@link Node} ovsdbNode
 395      * and {@link Manager} rows.
 396      *
 397      * @param ovsdbNode the {@link Node} to update
 398      * @param updatedManagerRows the list of {@link Manager} managers with updates
 399      * @return list of {@link ManagerEntry} entries
 400      */
 401     public static List<ManagerEntry> createManagerEntries(Node ovsdbNode,
 402                                                                 Map<Uri, Manager> updatedManagerRows) {
 403
 404         LOG.debug("createManagerEntries based on OVSDB Node: {}\n, updatedManagerRows: {}",
 405                 ovsdbNode, updatedManagerRows);
 406         final List<ManagerEntry> managerEntriesCreated = new ArrayList<>();
 407         final OvsdbNodeAugmentation ovsdbNodeAugmentation =
 408                 ovsdbNode.getAugmentation(OvsdbNodeAugmentation.class);
 409         if (ovsdbNodeAugmentation == null) {
 410             return managerEntriesCreated;
 411         }
 412
 413         final List<ManagerEntry> managerEntries = ovsdbNodeAugmentation.getManagerEntry();
 414         if (managerEntries != null) {
 415             for (ManagerEntry managerEntry : managerEntries) {
 416                 final Manager manager = updatedManagerRows.get(managerEntry.getTarget());
 417                 addManagerEntries(managerEntriesCreated, manager);
 418             }
 419         }
 420         LOG.debug("managerEntries: {}", managerEntriesCreated);
 421         return managerEntriesCreated;
 422     }
 423
 424     /**
 425      * Add the OVSDB {@link Manager} updates to the MDSAL {@link ManagerEntry} list.
 426      *
 427      * @param managerEntries the list of {@link ManagerEntry} to update
 428      * @param manager the updated OVSDB {@link Manager}
 429      */
 430     public static void addManagerEntries(List<ManagerEntry> managerEntries,
 431                                             final Manager manager) {
 432
 433         if (manager != null && manager.getTargetColumn() != null) {
 434             long numberOfConnections = 0;
 435             final String targetString = manager.getTargetColumn().getData();
 436
 437             final Map<String, String> statusAttributeMap = manager.getStatusColumn().getData();
 438             if (statusAttributeMap.containsKey(N_CONNECTIONS_STR)) {
 439                 String numberOfConnectionValueStr = statusAttributeMap.get(N_CONNECTIONS_STR);
 440                 numberOfConnections = Integer.parseInt(numberOfConnectionValueStr);
 441             } else {
 442                 final boolean isConnected = manager.getIsConnectedColumn().getData();
 443                 if (isConnected) {
 444                     numberOfConnections = 1;
 445                 }
 446             }
 447             managerEntries.add(new ManagerEntryBuilder()
 448                     .setTarget(new Uri(targetString))
 449                     .setNumberOfConnections(numberOfConnections)
 450                     .setConnected(manager.getIsConnectedColumn().getData()).build());
 451         }
 452     }
 453
 454     /**
 455      * Return the MD-SAL QoS type class corresponding to the QoS type {@link Qos}
 456      *
 457      * @param type the QoS type to match {@link String}
 458      * @return class matching the input QoS type {@link QosTypeBase}
 459      */
 460     public static  Class<? extends QosTypeBase> createQosType(String type) {
 461         Preconditions.checkNotNull(type);
 462         if (type.isEmpty()) {
 463             LOG.info("QoS type not supplied");
 464             return QosTypeBase.class;
 465         } else {
 466             ImmutableBiMap<String, Class<? extends QosTypeBase>> mapper =
 467                     SouthboundConstants.QOS_TYPE_MAP.inverse();
 468             if (mapper.get(type) == null) {
 469                 LOG.info("QoS type not found in model: {}", type);
 470                 return QosTypeBase.class;
 471             } else {
 472                 return mapper.get(type);
 473             }
 474         }
 475     }
 476
 477     public static String createQosType(Class<? extends QosTypeBase> qosTypeClass) {
 478         String qosType = SouthboundConstants.QOS_TYPE_MAP.get(QosTypeBase.class);
 479
 480         if (qosTypeClass != null && !qosTypeClass.equals(QosTypeBase.class)) {
 481             qosType = SouthboundConstants.QOS_TYPE_MAP.get(qosTypeClass);
 482             if (qosType == null) {
 483                 throw new IllegalArgumentException("Unknown QoS type" + qosTypeClass.getName());
 484             }
 485         }
 486         return qosType;
 487     }
 488
 489
 490     public static InstanceIdentifier<Node> getInstanceIdentifier(OpenVSwitch ovs) {
 491         if (ovs.getExternalIdsColumn() != null
 492                 && ovs.getExternalIdsColumn().getData() != null
 493                 && ovs.getExternalIdsColumn().getData().containsKey(SouthboundConstants.IID_EXTERNAL_ID_KEY)) {
 494             String iidString = ovs.getExternalIdsColumn().getData().get(SouthboundConstants.IID_EXTERNAL_ID_KEY);
 495             return (InstanceIdentifier<Node>) SouthboundUtil.deserializeInstanceIdentifier(iidString);
 496         } else {
 497             String nodeString = SouthboundConstants.OVSDB_URI_PREFIX + "://" + SouthboundConstants.UUID + "/"
 498                     + ovs.getUuid().toString();
 499             NodeId nodeId = new NodeId(new Uri(nodeString));
 500             NodeKey nodeKey = new NodeKey(nodeId);
 501             return InstanceIdentifier.builder(NetworkTopology.class)
 502                     .child(Topology.class,new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID))
 503                     .child(Node.class,nodeKey)
 504                     .build();
 505         }
 506     }
 507 }