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.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Address;
  32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv6Address;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.PortNumber;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Uri;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.DatapathId;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.DatapathTypeBase;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.DatapathTypeSystem;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.InterfaceTypeBase;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAugmentation;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeProtocolBase;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeAugmentation;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ControllerEntry;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ControllerEntryBuilder;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ProtocolEntry;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.bridge.attributes.ProtocolEntryBuilder;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ConnectionInfo;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ConnectionInfoBuilder;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ManagerEntry;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ManagerEntryBuilder;
  50 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  51 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  52 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  53 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  54 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  55 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  56 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  57 import org.slf4j.Logger;
  58 import org.slf4j.LoggerFactory;
  59
  60 import com.google.common.base.Joiner;
  61 import com.google.common.base.Preconditions;
  62 import com.google.common.base.Splitter;
  63 import com.google.common.collect.ImmutableBiMap;
  64
  65 public class SouthboundMapper {
  66     private static final Logger LOG = LoggerFactory.getLogger(SouthboundMapper.class);
  67     private static final String N_CONNECTIONS_STR = "n_connections";
  68
  69     private static NodeId createNodeId(OvsdbConnectionInstance client) {
  70         NodeKey key = client.getInstanceIdentifier().firstKeyOf(Node.class, NodeKey.class);
  71         return key.getNodeId();
  72
  73     }
  74
  75     public static IpAddress createIpAddress(InetAddress address) {
  76         IpAddress ip = null;
  77         if (address instanceof Inet4Address) {
  78             ip = createIpAddress((Inet4Address)address);
  79         } else if (address instanceof Inet6Address) {
  80             ip = createIpAddress((Inet6Address)address);
  81         }
  82         return ip;
  83     }
  84
  85     public static IpAddress createIpAddress(Inet4Address address) {
  86         Ipv4Address ipv4 = new Ipv4Address(address.getHostAddress());
  87         return new IpAddress(ipv4);
  88     }
  89
  90     public static IpAddress createIpAddress(Inet6Address address) {
  91         Ipv6Address ipv6 = new Ipv6Address(address.getHostAddress());
  92         return new IpAddress(ipv6);
  93     }
  94
  95     public static InstanceIdentifier<Node> createInstanceIdentifier(NodeId nodeId) {
  96         InstanceIdentifier<Node> nodePath = InstanceIdentifier
  97                 .create(NetworkTopology.class)
  98                 .child(Topology.class, new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID))
  99                 .child(Node.class,new NodeKey(nodeId));
 100         return nodePath;
 101     }
 102
 103     public static InstanceIdentifier<Node> createInstanceIdentifier(OvsdbConnectionInstance client,Bridge bridge) {
 104         InstanceIdentifier<Node> iid;
 105         if (bridge.getExternalIdsColumn() != null
 106                 && bridge.getExternalIdsColumn().getData() != null
 107                 && bridge.getExternalIdsColumn().getData().containsKey(SouthboundConstants.IID_EXTERNAL_ID_KEY)) {
 108             String iidString = bridge.getExternalIdsColumn().getData().get(SouthboundConstants.IID_EXTERNAL_ID_KEY);
 109             iid = (InstanceIdentifier<Node>) SouthboundUtil.deserializeInstanceIdentifier(iidString);
 110         } else {
 111             String nodeString = client.getNodeKey().getNodeId().getValue()
 112                     + "/bridge/" + bridge.getName();
 113             NodeId nodeId = new NodeId(new Uri(nodeString));
 114             NodeKey nodeKey = new NodeKey(nodeId);
 115             iid = InstanceIdentifier.builder(NetworkTopology.class)
 116                     .child(Topology.class,new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID))
 117                     .child(Node.class,nodeKey)
 118                     .build();
 119         }
 120         return iid;
 121     }
 122
 123     public static InstanceIdentifier<Node> createInstanceIdentifier(
 124             OvsdbConnectionInstance client, Controller controller, String bridgeName) {
 125         InstanceIdentifier<Node> iid;
 126         if (controller.getExternalIdsColumn() != null
 127                 && controller.getExternalIdsColumn().getData() != null
 128                 && controller.getExternalIdsColumn().getData().containsKey(SouthboundConstants.IID_EXTERNAL_ID_KEY)) {
 129             String iidString = controller.getExternalIdsColumn().getData().get(SouthboundConstants.IID_EXTERNAL_ID_KEY);
 130             iid = (InstanceIdentifier<Node>) SouthboundUtil.deserializeInstanceIdentifier(iidString);
 131         } else {
 132             // TODO retrieve bridge name
 133             String nodeString = client.getNodeKey().getNodeId().getValue()
 134                     + "/bridge/" + bridgeName;
 135             NodeId nodeId = new NodeId(new Uri(nodeString));
 136             NodeKey nodeKey = new NodeKey(nodeId);
 137             iid = InstanceIdentifier.builder(NetworkTopology.class)
 138                     .child(Topology.class,new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID))
 139                     .child(Node.class,nodeKey)
 140                     .build();
 141         }
 142         return iid;
 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 InetAddress.getByName(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 String createDatapathType(OvsdbBridgeAugmentation mdsalbridge) {
 181         String datapathtype = new String(SouthboundConstants.DATAPATH_TYPE_MAP.get(DatapathTypeSystem.class));
 182
 183         if (mdsalbridge.getDatapathType() != null) {
 184             if (SouthboundConstants.DATAPATH_TYPE_MAP.get(mdsalbridge.getDatapathType()) != null) {
 185                 datapathtype = SouthboundConstants.DATAPATH_TYPE_MAP.get(mdsalbridge.getDatapathType());
 186             } else {
 187                 throw new IllegalArgumentException("Unknown datapath type "
 188                         + SouthboundConstants.DATAPATH_TYPE_MAP.get(mdsalbridge.getDatapathType()));
 189             }
 190         }
 191         return datapathtype;
 192     }
 193
 194     public static  Class<? extends DatapathTypeBase> createDatapathType(String type) {
 195         Preconditions.checkNotNull(type);
 196         if (type.isEmpty()) {
 197             return DatapathTypeSystem.class;
 198         } else {
 199             ImmutableBiMap<String, Class<? extends DatapathTypeBase>> mapper =
 200                     SouthboundConstants.DATAPATH_TYPE_MAP.inverse();
 201             return mapper.get(type);
 202         }
 203     }
 204
 205     public static DatapathId createDatapathId(String dpid) {
 206         Preconditions.checkNotNull(dpid);
 207         DatapathId datapath;
 208         if (dpid.matches("^[0-9a-fA-F]{16}")) {
 209             Splitter splitter = Splitter.fixedLength(2);
 210             Joiner joiner = Joiner.on(":");
 211             datapath = new DatapathId(joiner.join(splitter.split(dpid)));
 212         } else {
 213             datapath = new DatapathId(dpid);
 214         }
 215         return datapath;
 216     }
 217
 218     public static Set<String> createOvsdbBridgeProtocols(OvsdbBridgeAugmentation ovsdbBridgeNode) {
 219         Set<String> protocols = new HashSet<>();
 220         if (ovsdbBridgeNode.getProtocolEntry() != null && ovsdbBridgeNode.getProtocolEntry().size() > 0) {
 221             for (ProtocolEntry protocol : ovsdbBridgeNode.getProtocolEntry()) {
 222                 if (SouthboundConstants.OVSDB_PROTOCOL_MAP.get(protocol.getProtocol()) != null) {
 223                     protocols.add(SouthboundConstants.OVSDB_PROTOCOL_MAP.get(protocol.getProtocol()));
 224                 } else {
 225                     throw new IllegalArgumentException("Unknown protocol " + protocol.getProtocol());
 226                 }
 227             }
 228         }
 229         return protocols;
 230     }
 231
 232     public static  Class<? extends InterfaceTypeBase> createInterfaceType(String type) {
 233         Preconditions.checkNotNull(type);
 234         return SouthboundConstants.OVSDB_INTERFACE_TYPE_MAP.get(type);
 235     }
 236
 237     public static String createOvsdbInterfaceType(Class<? extends InterfaceTypeBase> mdsaltype) {
 238         Preconditions.checkNotNull(mdsaltype);
 239         ImmutableBiMap<Class<? extends InterfaceTypeBase>, String> mapper =
 240                 SouthboundConstants.OVSDB_INTERFACE_TYPE_MAP.inverse();
 241         return mapper.get(mdsaltype);
 242     }
 243
 244     public static List<ProtocolEntry> createMdsalProtocols(Bridge bridge) {
 245         Set<String> protocols = null;
 246         try {
 247             protocols = bridge.getProtocolsColumn().getData();
 248         } catch (SchemaVersionMismatchException e) {
 249             LOG.warn("protocols not supported by this version of ovsdb", e);
 250         }
 251         List<ProtocolEntry> protocolList = new ArrayList<ProtocolEntry>();
 252         if (protocols != null && protocols.size() > 0) {
 253             ImmutableBiMap<String, Class<? extends OvsdbBridgeProtocolBase>> mapper =
 254                     SouthboundConstants.OVSDB_PROTOCOL_MAP.inverse();
 255             for (String protocol : protocols) {
 256                 if (protocol != null && mapper.get(protocol) != null) {
 257                     protocolList.add(new ProtocolEntryBuilder().
 258                             setProtocol((Class<? extends OvsdbBridgeProtocolBase>) mapper.get(protocol)).build());
 259                 }
 260             }
 261         }
 262         return protocolList;
 263     }
 264
 265     /**
 266      * Create the {@link ControllerEntry} list given an OVSDB {@link Bridge}
 267      * and {@link Controller} rows.
 268      *
 269      * @param bridge the {@link Bridge} to update
 270      * @param updatedControllerRows the list of {@link Controller} controllers with updates
 271      * @return list of {@link ControllerEntry} entries
 272      */
 273     public static List<ControllerEntry> createControllerEntries(Bridge bridge,
 274                                                                 Map<UUID, Controller> updatedControllerRows) {
 275
 276         LOG.debug("createControllerEntries Bridge: {}\n, updatedControllerRows: {}",
 277                 bridge, updatedControllerRows);
 278         final Set<UUID> controllerUUIDs = bridge.getControllerColumn().getData();
 279         final List<ControllerEntry> controllerEntries = new ArrayList<ControllerEntry>();
 280         for (UUID controllerUUID : controllerUUIDs ) {
 281             final Controller controller = updatedControllerRows.get(controllerUUID);
 282             addControllerEntries(controllerEntries, controller);
 283         }
 284         LOG.debug("controllerEntries: {}", controllerEntries);
 285         return controllerEntries;
 286     }
 287
 288     /**
 289      * Create the {@link ControllerEntry} list given an MDSAL {@link Node} bridge
 290      * and {@link Controller} rows.
 291      *
 292      * @param bridgeNode the {@link Node} to update
 293      * @param updatedControllerRows the list of {@link Controller} controllers with updates
 294      * @return list of {@link ControllerEntry} entries
 295      */
 296     public static List<ControllerEntry> createControllerEntries(Node bridgeNode,
 297                                                                 Map<UUID, Controller> updatedControllerRows) {
 298
 299         LOG.debug("createControllerEntries Bridge 2: {}\n, updatedControllerRows: {}",
 300                 bridgeNode, updatedControllerRows);
 301         final List<ControllerEntry> controllerEntriesCreated = new ArrayList<ControllerEntry>();
 302         final OvsdbBridgeAugmentation ovsdbBridgeAugmentation =
 303                 bridgeNode.getAugmentation(OvsdbBridgeAugmentation.class);
 304         if (ovsdbBridgeAugmentation == null) {
 305             return controllerEntriesCreated;
 306         }
 307
 308         final List<ControllerEntry> controllerEntries = ovsdbBridgeAugmentation.getControllerEntry();
 309         if (controllerEntries != null) {
 310             for (ControllerEntry controllerEntry : controllerEntries) {
 311                 final Controller controller = updatedControllerRows.get(
 312                         new UUID(controllerEntry.getControllerUuid().getValue()));
 313                 addControllerEntries(controllerEntriesCreated, controller);
 314             }
 315         }
 316         LOG.debug("controllerEntries: {}", controllerEntriesCreated);
 317         return controllerEntriesCreated;
 318     }
 319
 320     /**
 321      * Add the OVSDB {@link Controller} updates to the MDSAL {@link ControllerEntry} list.
 322      *
 323      * @param controllerEntries the list of {@link ControllerEntry} to update
 324      * @param controller the updated OVSDB {@link Controller}
 325      */
 326     public static void addControllerEntries(List<ControllerEntry> controllerEntries,
 327                                             final Controller controller) {
 328
 329         if (controller != null && controller.getTargetColumn() != null) {
 330             final String targetString = controller.getTargetColumn().getData();
 331             final org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid uuid =
 332                     new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang
 333                             .ietf.yang.types.rev130715.Uuid(controller.getUuid().toString());
 334
 335             controllerEntries.add(new ControllerEntryBuilder()
 336                     .setTarget(new Uri(targetString))
 337                     .setIsConnected(controller.getIsConnectedColumn().getData())
 338                     .setControllerUuid(uuid).build());
 339         }
 340     }
 341
 342     public static Map<UUID, Controller> createOvsdbController(OvsdbBridgeAugmentation omn,DatabaseSchema dbSchema) {
 343         List<ControllerEntry> controllerEntries = omn.getControllerEntry();
 344         Map<UUID,Controller> controllerMap = new HashMap<>();
 345         if (controllerEntries != null && !controllerEntries.isEmpty()) {
 346             for (ControllerEntry controllerEntry : controllerEntries) {
 347                 String controllerNamedUUID = "Controller_" + getRandomUUID();
 348                 Controller controller = TyperUtils.getTypedRowWrapper(dbSchema, Controller.class);
 349                 controller.setTarget(controllerEntry.getTarget().getValue());
 350                 controllerMap.put(new UUID(controllerNamedUUID), controller);
 351             }
 352         }
 353         return controllerMap;
 354     }
 355
 356     public static String getRandomUUID() {
 357         return "Random_" + java.util.UUID.randomUUID().toString().replace("-", "");
 358     }
 359     public static ConnectionInfo createConnectionInfo(OvsdbClient client) {
 360         ConnectionInfoBuilder connectionInfoBuilder = new ConnectionInfoBuilder();
 361         connectionInfoBuilder.setRemoteIp(createIpAddress(client.getConnectionInfo().getRemoteAddress()));
 362         connectionInfoBuilder.setRemotePort(new PortNumber(client.getConnectionInfo().getRemotePort()));
 363         connectionInfoBuilder.setLocalIp(createIpAddress(client.getConnectionInfo().getLocalAddress()));
 364         connectionInfoBuilder.setLocalPort(new PortNumber(client.getConnectionInfo().getLocalPort()));
 365         return connectionInfoBuilder.build();
 366     }
 367
 368     public static ConnectionInfo suppressLocalIpPort(ConnectionInfo connectionInfo) {
 369         ConnectionInfoBuilder connectionInfoBuilder = new ConnectionInfoBuilder();
 370         connectionInfoBuilder.setRemoteIp(connectionInfo.getRemoteIp());
 371         connectionInfoBuilder.setRemotePort(connectionInfo.getRemotePort());
 372         return connectionInfoBuilder.build();
 373     }
 374
 375     /**
 376      * Create the {@link ManagerEntry} list given an OVSDB {@link OpenVSwitch}
 377      * and {@link Manager} rows.
 378      *
 379      * @param ovsdbNode the {@link OpenVSwitch} to update
 380      * @param updatedManagerRows the list of {@link Manager} managers with updates
 381      * @return list of {@link ManagerEntry} entries
 382      */
 383     public static List<ManagerEntry> createManagerEntries(OpenVSwitch ovsdbNode,
 384                                                                 Map<UUID, Manager> updatedManagerRows) {
 385
 386         LOG.debug("createManagerEntries OpenVSwitch: {}\n, updatedManagerRows: {}",
 387                 ovsdbNode, updatedManagerRows);
 388         final Set<UUID> managerUUIDs = ovsdbNode.getManagerOptionsColumn().getData();
 389         final List<ManagerEntry> managerEntries = new ArrayList<ManagerEntry>();
 390         for (UUID managerUUID : managerUUIDs ) {
 391             final Manager manager = updatedManagerRows.get(managerUUID);
 392             addManagerEntries(managerEntries, manager);
 393         }
 394         LOG.debug("managerEntries: {}", managerEntries);
 395         return managerEntries;
 396     }
 397
 398     /**
 399      * Create the {@link ManagerEntry} list given an MDSAL {@link Node} ovsdbNode
 400      * and {@link Manager} rows.
 401      *
 402      * @param ovsdbNode the {@link Node} to update
 403      * @param updatedManagerRows the list of {@link Manager} managers with updates
 404      * @return list of {@link ManagerEntry} entries
 405      */
 406     public static List<ManagerEntry> createManagerEntries(Node ovsdbNode,
 407                                                                 Map<Uri, Manager> updatedManagerRows) {
 408
 409         LOG.debug("createManagerEntries based on OVSDB Node: {}\n, updatedManagerRows: {}",
 410                 ovsdbNode, updatedManagerRows);
 411         final List<ManagerEntry> managerEntriesCreated = new ArrayList<ManagerEntry>();
 412         final OvsdbNodeAugmentation ovsdbNodeAugmentation =
 413                 ovsdbNode.getAugmentation(OvsdbNodeAugmentation.class);
 414         if (ovsdbNodeAugmentation == null) {
 415             return managerEntriesCreated;
 416         }
 417
 418         final List<ManagerEntry> managerEntries = ovsdbNodeAugmentation.getManagerEntry();
 419         if (managerEntries != null) {
 420             for (ManagerEntry managerEntry : managerEntries) {
 421                 final Manager manager = updatedManagerRows.get(managerEntry.getTarget());
 422                 addManagerEntries(managerEntriesCreated, manager);
 423             }
 424         }
 425         LOG.debug("managerEntries: {}", managerEntriesCreated);
 426         return managerEntriesCreated;
 427     }
 428
 429     /**
 430      * Add the OVSDB {@link Manager} updates to the MDSAL {@link ManagerEntry} list.
 431      *
 432      * @param managerEntries the list of {@link ManagerEntry} to update
 433      * @param manager the updated OVSDB {@link Manager}
 434      */
 435     public static void addManagerEntries(List<ManagerEntry> managerEntries,
 436                                             final Manager manager) {
 437
 438         if (manager != null && manager.getTargetColumn() != null) {
 439             long numberOfConnections = 0;
 440             final String targetString = (String)manager.getTargetColumn().getData();
 441
 442             final Map<String, String> statusAttributeMap = manager.getStatusColumn().getData();
 443             if (statusAttributeMap.containsKey(N_CONNECTIONS_STR)) {
 444                 String numberOfConnectionValueStr = statusAttributeMap.get(N_CONNECTIONS_STR);
 445                 numberOfConnections = Integer.parseInt(numberOfConnectionValueStr);
 446             } else {
 447                 final boolean isConnected = manager.getIsConnectedColumn().getData();
 448                 if (isConnected) {
 449                     numberOfConnections = 1;
 450                 }
 451             }
 452             managerEntries.add(new ManagerEntryBuilder()
 453                     .setTarget(new Uri(targetString))
 454                     .setNumberOfConnections(numberOfConnections)
 455                     .setConnected(manager.getIsConnectedColumn().getData()).build());
 456         }
 457     }
 458
 459 }