opendaylight/md-sal/compatibility/sal-compatibility/src/main/java/org/opendaylight/controller/sal/compatibility/NodeMapping.java

   1 /**
   2  * Copyright (c) 2014 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.controller.sal.compatibility;
   9
  10 import com.google.common.annotations.VisibleForTesting;
  11 import com.google.common.base.Objects;
  12 import com.google.common.base.Preconditions;
  13 import java.math.BigInteger;
  14 import java.util.Date;
  15 import java.util.HashSet;
  16 import java.util.List;
  17 import java.util.regex.Pattern;
  18 import org.opendaylight.controller.sal.common.util.Arguments;
  19 import org.opendaylight.controller.sal.core.AdvertisedBandwidth;
  20 import org.opendaylight.controller.sal.core.Bandwidth;
  21 import org.opendaylight.controller.sal.core.Buffers;
  22 import org.opendaylight.controller.sal.core.Capabilities;
  23 import org.opendaylight.controller.sal.core.Config;
  24 import org.opendaylight.controller.sal.core.ConstructionException;
  25 import org.opendaylight.controller.sal.core.Description;
  26 import org.opendaylight.controller.sal.core.MacAddress;
  27 import org.opendaylight.controller.sal.core.Name;
  28 import org.opendaylight.controller.sal.core.Node.NodeIDType;
  29 import org.opendaylight.controller.sal.core.NodeConnector.NodeConnectorIDType;
  30 import org.opendaylight.controller.sal.core.PeerBandwidth;
  31 import org.opendaylight.controller.sal.core.Property;
  32 import org.opendaylight.controller.sal.core.SupportedBandwidth;
  33 import org.opendaylight.controller.sal.core.Tables;
  34 import org.opendaylight.controller.sal.core.TimeStamp;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FeatureCapability;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnectorUpdated;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeUpdated;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowFeatureCapabilityArpMatchIp;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowFeatureCapabilityFlowStats;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowFeatureCapabilityIpReasm;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowFeatureCapabilityPortStats;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowFeatureCapabilityQueueStats;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowFeatureCapabilityStp;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowFeatureCapabilityTableStats;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowNode;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowNodeConnector;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.flow.node.SwitchFeatures;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.PortConfig;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.PortFeatures;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.flow.capable.port.State;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.OutputPortValues;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorUpdated;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeUpdated;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  64 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  65 import org.slf4j.Logger;
  66 import org.slf4j.LoggerFactory;
  67
  68 public final class NodeMapping {
  69
  70     private static final Logger LOG = LoggerFactory
  71             .getLogger(NodeMapping.class);
  72
  73     /**
  74      * openflow id prefix
  75      */
  76     public static final String OPENFLOW_ID_PREFIX = "openflow:";
  77
  78     public final static String MD_SAL_TYPE = "MD_SAL_DEPRECATED";
  79
  80     private final static Class<Node> NODE_CLASS = Node.class;
  81
  82     private final static Class<NodeConnector> NODECONNECTOR_CLASS = NodeConnector.class;
  83
  84     private final static Pattern COLON_NUMBERS_EOL = Pattern.compile(":[0-9]+$");
  85
  86     private final static Pattern NUMBERS_ONLY = Pattern.compile("[0-9]+");
  87
  88     private final static Pattern ALL_CHARS_TO_COLON = Pattern.compile("^.*:");
  89
  90     private NodeMapping() {
  91         throw new UnsupportedOperationException("Utility class. Instantiation is not allowed.");
  92     }
  93
  94     public static org.opendaylight.controller.sal.core.Node toADNode(final InstanceIdentifier<? extends Object> node) throws ConstructionException {
  95         NodeId nodeId = NodeMapping.toNodeId(node);
  96         return NodeMapping.toADNode(nodeId);
  97     }
  98
  99     public static org.opendaylight.controller.sal.core.Node toADNode(final NodeId id) throws ConstructionException {
 100         String nodeId = NodeMapping.toADNodeId(id);
 101         String nodeIdasNumber = nodeId.replaceFirst("^.*:", "");
 102         if (isInteger(nodeIdasNumber)) {
 103             Long aDNodeId = openflowFullNodeIdToLong(nodeIdasNumber);
 104             return new org.opendaylight.controller.sal.core.Node(NodeIDType.OPENFLOW, aDNodeId);
 105         } else {
 106             return new org.opendaylight.controller.sal.core.Node(NodeIDType.PRODUCTION, nodeId);
 107         }
 108     }
 109
 110     /**
 111      * @param adNodeId
 112      * @return nodeId as long
 113      */
 114     @VisibleForTesting
 115     public static Long openflowFullNodeIdToLong(String adNodeId) {
 116         if (adNodeId == null) {
 117             return null;
 118         }
 119         return new BigInteger(adNodeId).longValue();
 120     }
 121
 122     public static NodeId toNodeId(final InstanceIdentifier<?> id) {
 123         final NodeKey key = id.firstKeyOf(Node.class, NodeKey.class);
 124         Preconditions.checkArgument(key != null, "No node identifier found in %s", id);
 125         return key.getId();
 126     }
 127
 128     /**
 129      * @param nodeId containing "&lt;NodeTypeString&gt;:&lt;plainIntegerId&gt;"
 130      * @return adNodeId form
 131      */
 132     public static String toADNodeId(final NodeId nodeId) {
 133         if (nodeId == null) {
 134             return null;
 135         }
 136         return nodeId.getValue();
 137     }
 138
 139     public static org.opendaylight.controller.sal.core.NodeConnector toADNodeConnector(final NodeConnectorRef source) throws ConstructionException {
 140         final InstanceIdentifier<?> id = Preconditions.checkNotNull(source.getValue());
 141         final NodeConnectorKey key = id.firstKeyOf(NodeConnector.class, NodeConnectorKey.class);
 142         return NodeMapping.toADNodeConnector(key.getId(), NodeMapping.toNodeId(id));
 143     }
 144
 145     public static org.opendaylight.controller.sal.core.NodeConnector toADNodeConnector(final NodeConnectorId ncid, final NodeId nid) throws ConstructionException {
 146         String nodeConnectorType = NodeMapping.toNodeConnectorType(ncid, nid);
 147         Object aDNodeConnectorId = NodeMapping.toADNodeConnectorId(ncid, nid);
 148         org.opendaylight.controller.sal.core.Node aDNode = NodeMapping.toADNode(nid);
 149         return new org.opendaylight.controller.sal.core.NodeConnector(nodeConnectorType, aDNodeConnectorId, aDNode);
 150     }
 151
 152     /**
 153      * @param ncid   nodeConnector identifier, e.g.: OF:21 or CTRL
 154      * @param aDNode
 155      * @return nodeConnector attached to given node
 156      * @throws ConstructionException
 157      */
 158     public static org.opendaylight.controller.sal.core.NodeConnector toADNodeConnector(
 159             final NodeConnectorId ncid, final org.opendaylight.controller.sal.core.Node aDNode) throws ConstructionException {
 160         NodeId nid = NodeMapping.toNodeId(aDNode);
 161         String nodeConnectorType = NodeMapping.toNodeConnectorType(ncid, nid);
 162         Object aDNodeConnectorId = NodeMapping.toADNodeConnectorId(ncid, nid);
 163         return new org.opendaylight.controller.sal.core.NodeConnector(nodeConnectorType, aDNodeConnectorId, aDNode);
 164     }
 165
 166     /**
 167      * @param aDNode
 168      * @return
 169      */
 170     private static NodeId toNodeId(org.opendaylight.controller.sal.core.Node aDNode) {
 171         return new NodeId(aDNode.getType() + ":" + String.valueOf(aDNode.getID()));
 172     }
 173
 174     public static String toNodeConnectorType(final NodeConnectorId ncId, final NodeId nodeId) {
 175         if (ncId.equals(toLocalNodeConnectorId(nodeId))) {
 176             return NodeConnectorIDType.SWSTACK;
 177         } else if (ncId.equals(toNormalNodeConnectorId(nodeId))) {
 178             return NodeConnectorIDType.HWPATH;
 179         } else if (ncId.equals(toControllerNodeConnectorId(nodeId))) {
 180             return NodeConnectorIDType.CONTROLLER;
 181         }
 182         return NodeConnectorIDType.OPENFLOW;
 183     }
 184
 185     public static Object toADNodeConnectorId(final NodeConnectorId nodeConnectorId, final NodeId nodeId) {
 186         if (nodeConnectorId.equals(toLocalNodeConnectorId(nodeId)) ||
 187                 nodeConnectorId.equals(toNormalNodeConnectorId(nodeId)) ||
 188                 nodeConnectorId.equals(toControllerNodeConnectorId(nodeId))) {
 189             return org.opendaylight.controller.sal.core.NodeConnector.SPECIALNODECONNECTORID;
 190         }
 191
 192         String nodeConnectorIdStripped = ALL_CHARS_TO_COLON.matcher(nodeConnectorId.getValue()).replaceFirst("");
 193
 194         if (NUMBERS_ONLY.matcher(nodeConnectorIdStripped).matches()) {
 195             Short nodeConnectorIdVal = null;
 196             try {
 197                 nodeConnectorIdVal = Short.valueOf(nodeConnectorIdStripped);
 198                 return nodeConnectorIdVal;
 199             } catch (NumberFormatException e) {
 200                 LOG.warn("nodeConnectorId not supported (long): {}", nodeConnectorIdStripped, e);
 201             }
 202         }
 203         return nodeConnectorIdStripped;
 204     }
 205
 206     public static NodeId toAdNodeId(final NodeConnectorId nodeConnectorId) {
 207         NodeId nodeId = null;
 208         if (nodeConnectorId != null) {
 209             nodeId = new NodeId(COLON_NUMBERS_EOL.matcher(nodeConnectorId.getValue()).replaceFirst(""));
 210         }
 211         return nodeId;
 212     }
 213
 214     public static NodeConnectorId toControllerNodeConnectorId(final NodeId node) {
 215         return new NodeConnectorId(node.getValue() + ":" + OutputPortValues.CONTROLLER.toString());
 216     }
 217
 218     public static NodeConnectorId toLocalNodeConnectorId(final NodeId node) {
 219         return new NodeConnectorId(node.getValue() + ":" + OutputPortValues.LOCAL.toString());
 220     }
 221
 222     public static NodeConnectorId toNormalNodeConnectorId(final NodeId node) {
 223         return new NodeConnectorId(node.getValue() + ":" + OutputPortValues.NORMAL.toString());
 224     }
 225
 226     public static NodeRef toNodeRef(final org.opendaylight.controller.sal.core.Node node) {
 227         Preconditions.checkArgument(NodeIDType.OPENFLOW.equals(node.getType()));
 228         final Long nodeId = Arguments.<Long>checkInstanceOf(node.getID(), Long.class);
 229         final NodeKey nodeKey = new NodeKey(new NodeId(OPENFLOW_ID_PREFIX + nodeId));
 230         final InstanceIdentifier<Node> nodePath = InstanceIdentifier.builder(Nodes.class).child(NODE_CLASS, nodeKey).toInstance();
 231         return new NodeRef(nodePath);
 232     }
 233
 234     public static NodeConnectorRef toNodeConnectorRef(final org.opendaylight.controller.sal.core.NodeConnector nodeConnector) {
 235
 236         final NodeRef node = NodeMapping.toNodeRef(nodeConnector.getNode());
 237         @SuppressWarnings("unchecked")
 238         final InstanceIdentifier<Node> nodePath = ((InstanceIdentifier<Node>) node.getValue());
 239         NodeConnectorId nodeConnectorId = null;
 240
 241         if (nodeConnector.getID().equals(org.opendaylight.controller.sal.core.NodeConnector.SPECIALNODECONNECTORID)) {
 242             final NodeId nodeId = toNodeId(nodePath);
 243             final String nodeConnectorType = nodeConnector.getType();
 244             if (nodeConnectorType.equals(NodeConnectorIDType.SWSTACK)) {
 245                 nodeConnectorId = toLocalNodeConnectorId(nodeId);
 246             } else if (nodeConnectorType.equals(NodeConnectorIDType.HWPATH)) {
 247                 nodeConnectorId = toNormalNodeConnectorId(nodeId);
 248             } else if (nodeConnectorType.equals(NodeConnectorIDType.CONTROLLER)) {
 249                 nodeConnectorId = toControllerNodeConnectorId(nodeId);
 250             }
 251         } else {
 252             nodeConnectorId = new NodeConnectorId(OPENFLOW_ID_PREFIX
 253                     + Arguments.<Short>checkInstanceOf(nodeConnector.getID(), Short.class));
 254         }
 255         final NodeConnectorKey connectorKey = new NodeConnectorKey(nodeConnectorId);
 256         final InstanceIdentifier<NodeConnector> path = nodePath.child(NODECONNECTOR_CLASS, connectorKey);
 257         return new NodeConnectorRef(path);
 258     }
 259
 260     public static org.opendaylight.controller.sal.core.Node toADNode(final NodeRef node) throws ConstructionException {
 261         return NodeMapping.toADNode(node.getValue());
 262     }
 263
 264     public static HashSet<Property> toADNodeConnectorProperties(final NodeConnectorUpdated nc) {
 265         final FlowCapableNodeConnectorUpdated fcncu = nc.<FlowCapableNodeConnectorUpdated>getAugmentation(FlowCapableNodeConnectorUpdated.class);
 266         if (!Objects.equal(fcncu, null)) {
 267             HashSet<Property> adNodeConnectorProperties = NodeMapping.toADNodeConnectorProperties(fcncu);
 268             return adNodeConnectorProperties;
 269         }
 270         return new HashSet<Property>();
 271     }
 272
 273     /**
 274      * @param nodeRef
 275      * @return node description in AD form, e.g.: OF|00:00:00:...:01
 276      */
 277     private static Description toADDescription(NodeRef nodeRef) {
 278         Description desc;
 279         try {
 280             desc = new Description(toADNode(nodeRef).toString());
 281         } catch (ConstructionException e) {
 282             desc = new Description("none");
 283             LOG.warn("node description extraction failed: {}", nodeRef);
 284         }
 285         return desc;
 286     }
 287
 288     public static HashSet<Property> toADNodeConnectorProperties(final NodeConnector nc) {
 289         final FlowCapableNodeConnector fcnc = nc.<FlowCapableNodeConnector>getAugmentation(FlowCapableNodeConnector.class);
 290         if (!Objects.equal(fcnc, null)) {
 291             return NodeMapping.toADNodeConnectorProperties(fcnc);
 292         }
 293         return new HashSet<Property>();
 294     }
 295
 296     public static HashSet<Property> toADNodeConnectorProperties(final FlowNodeConnector fcncu) {
 297
 298         final HashSet<org.opendaylight.controller.sal.core.Property> props = new HashSet<>();
 299         if (fcncu != null) {
 300             if (fcncu.getCurrentFeature() != null && toAdBandwidth(fcncu.getCurrentFeature()) != null) {
 301                 props.add(toAdBandwidth(fcncu.getCurrentFeature()));
 302             }
 303             if (fcncu.getAdvertisedFeatures() != null && toAdAdvertizedBandwidth(fcncu.getAdvertisedFeatures()) != null) {
 304                 props.add(toAdAdvertizedBandwidth(fcncu.getAdvertisedFeatures()));
 305             }
 306             if (fcncu.getSupported() != null && toAdSupportedBandwidth(fcncu.getSupported()) != null) {
 307                 props.add(toAdSupportedBandwidth(fcncu.getSupported()));
 308             }
 309             if (fcncu.getPeerFeatures() != null && toAdPeerBandwidth(fcncu.getPeerFeatures()) != null) {
 310                 props.add(toAdPeerBandwidth(fcncu.getPeerFeatures()));
 311             }
 312             if (fcncu.getName() != null && toAdName(fcncu.getName()) != null) {
 313                 props.add(toAdName(fcncu.getName()));
 314             }
 315             if (fcncu.getConfiguration() != null && toAdConfig(fcncu.getConfiguration()) != null) {
 316                 props.add(toAdConfig(fcncu.getConfiguration()));
 317             }
 318             if (fcncu.getState() != null && toAdState(fcncu.getState()) != null) {
 319                 props.add(toAdState(fcncu.getState()));
 320             }
 321         }
 322         return props;
 323     }
 324
 325     public static Name toAdName(final String name) {
 326         return new Name(name);
 327     }
 328
 329     public static Config toAdConfig(final PortConfig pc) {
 330         Config config = null;
 331         if (pc.isPORTDOWN()) {
 332             config = new Config(Config.ADMIN_DOWN);
 333         } else {
 334             config = new Config(Config.ADMIN_UP);
 335         }
 336         return config;
 337     }
 338
 339     public static org.opendaylight.controller.sal.core.State toAdState(final State s) {
 340
 341         org.opendaylight.controller.sal.core.State state = null;
 342         if (s.isLinkDown()) {
 343             state = new org.opendaylight.controller.sal.core.State(org.opendaylight.controller.sal.core.State.EDGE_DOWN);
 344         } else {
 345             state = new org.opendaylight.controller.sal.core.State(org.opendaylight.controller.sal.core.State.EDGE_UP);
 346         }
 347         return state;
 348     }
 349
 350     public static Bandwidth toAdBandwidth(final PortFeatures pf) {
 351         Bandwidth bw = null;
 352         if (pf.isTenMbHd() || pf.isTenMbFd()) {
 353             bw = new Bandwidth(Bandwidth.BW10Mbps);
 354         } else if (pf.isHundredMbHd() || pf.isHundredMbFd()) {
 355             bw = new Bandwidth(Bandwidth.BW100Mbps);
 356         } else if (pf.isOneGbHd() || pf.isOneGbFd()) {
 357             bw = new Bandwidth(Bandwidth.BW1Gbps);
 358         } else if (pf.isOneGbFd()) {
 359             bw = new Bandwidth(Bandwidth.BW10Gbps);
 360         } else if (pf.isTenGbFd()) {
 361             bw = new Bandwidth(Bandwidth.BW10Gbps);
 362         } else if (pf.isFortyGbFd()) {
 363             bw = new Bandwidth(Bandwidth.BW40Gbps);
 364         } else if (pf.isHundredGbFd()) {
 365             bw = new Bandwidth(Bandwidth.BW100Gbps);
 366         } else if (pf.isOneTbFd()) {
 367             bw = new Bandwidth(Bandwidth.BW1Tbps);
 368         }
 369         return bw;
 370     }
 371
 372     public static AdvertisedBandwidth toAdAdvertizedBandwidth(final PortFeatures pf) {
 373         AdvertisedBandwidth abw = null;
 374         final Bandwidth bw = toAdBandwidth(pf);
 375         if (bw != null) {
 376             abw = new AdvertisedBandwidth(bw.getValue());
 377         }
 378         return abw;
 379     }
 380
 381     public static SupportedBandwidth toAdSupportedBandwidth(final PortFeatures pf) {
 382         SupportedBandwidth sbw = null;
 383         final Bandwidth bw = toAdBandwidth(pf);
 384         if (bw != null) {
 385             sbw = new SupportedBandwidth(bw.getValue());
 386         }
 387         return sbw;
 388     }
 389
 390     public static PeerBandwidth toAdPeerBandwidth(final PortFeatures pf) {
 391         PeerBandwidth pbw = null;
 392         final Bandwidth bw = toAdBandwidth(pf);
 393         if (bw != null) {
 394             pbw = new PeerBandwidth(bw.getValue());
 395         }
 396         return pbw;
 397     }
 398
 399     public static HashSet<Property> toADNodeProperties(final NodeUpdated nu) {
 400         final FlowCapableNodeUpdated fcnu = nu.getAugmentation(FlowCapableNodeUpdated.class);
 401         if (fcnu != null) {
 402             HashSet<Property> adNodeProperties = toADNodeProperties(fcnu, nu.getId());
 403             adNodeProperties.add(toADDescription(nu.getNodeRef()));
 404             return adNodeProperties;
 405         }
 406         return new HashSet<org.opendaylight.controller.sal.core.Property>();
 407     }
 408
 409     public static HashSet<Property> toADNodeProperties(final FlowNode fcnu, final NodeId id) {
 410
 411         final HashSet<org.opendaylight.controller.sal.core.Property> props = new HashSet<>();
 412
 413         if (fcnu != null) {
 414             props.add(toADTimestamp());
 415
 416             // props.add(fcnu.supportedActions.toADActions) - TODO
 417             if (id != null) {
 418                 props.add(toADMacAddress(id));
 419             }
 420             SwitchFeatures switchFeatures = fcnu.getSwitchFeatures();
 421             if (switchFeatures != null) {
 422                 if (switchFeatures.getMaxTables() != null) {
 423                     props.add(toADTables(switchFeatures.getMaxTables()));
 424                 }
 425                 if (switchFeatures.getCapabilities() != null) {
 426                     props.add(toADCapabiliities(switchFeatures.getCapabilities()));
 427                 }
 428                 if (switchFeatures.getMaxBuffers() != null) {
 429                     props.add(toADBuffers(switchFeatures.getMaxBuffers()));
 430                 }
 431             }
 432         }
 433         return props;
 434     }
 435
 436     public static TimeStamp toADTimestamp() {
 437         final Date date = new Date();
 438         final TimeStamp timestamp = new TimeStamp(date.getTime(), "connectedSince");
 439         return timestamp;
 440     }
 441
 442     public static MacAddress toADMacAddress(final NodeId id) {
 443         final String nodeId = id.getValue().replaceAll(OPENFLOW_ID_PREFIX, "");
 444         BigInteger nodeIdRaw = new BigInteger(nodeId);
 445         long lNodeId = nodeIdRaw.longValue();
 446         byte[] bytesFromDpid = ToSalConversionsUtils.bytesFromDpid(lNodeId);
 447         return new MacAddress(bytesFromDpid);
 448     }
 449
 450     public static Tables toADTables(final Short tables) {
 451         return new Tables(tables.byteValue());
 452     }
 453
 454     public static Capabilities toADCapabiliities(final List<Class<? extends FeatureCapability>> capabilities) {
 455
 456         int b = 0;
 457         for (Class<? extends FeatureCapability> capability : capabilities) {
 458             if (capability.equals(FlowFeatureCapabilityFlowStats.class)) {
 459                 b = Capabilities.CapabilitiesType.FLOW_STATS_CAPABILITY.getValue() | b;
 460             } else if (capability.equals(FlowFeatureCapabilityTableStats.class)) {
 461                 b = Capabilities.CapabilitiesType.TABLE_STATS_CAPABILITY.getValue() | b;
 462             } else if (capability.equals(FlowFeatureCapabilityPortStats.class)) {
 463                 b = Capabilities.CapabilitiesType.PORT_STATS_CAPABILITY.getValue() | b;
 464             } else if (capability.equals(FlowFeatureCapabilityStp.class)) {
 465                 b = Capabilities.CapabilitiesType.STP_CAPABILITY.getValue() | b;
 466             } else if (capability.equals(FlowFeatureCapabilityIpReasm.class)) {
 467                 b = Capabilities.CapabilitiesType.IP_REASSEM_CAPABILITY.getValue() | b;
 468             } else if (capability.equals(FlowFeatureCapabilityQueueStats.class)) {
 469                 b = Capabilities.CapabilitiesType.QUEUE_STATS_CAPABILITY.getValue() | b;
 470             } else if (capability.equals(FlowFeatureCapabilityArpMatchIp.class)) {
 471                 b = Capabilities.CapabilitiesType.ARP_MATCH_IP_CAPABILITY.getValue() | b;
 472             }
 473         }
 474         return new Capabilities(b);
 475     }
 476
 477     public static Buffers toADBuffers(final Long buffers) {
 478         return new Buffers(buffers.intValue());
 479     }
 480
 481
 482     private static final boolean isInteger(String value) {
 483         if (value.isEmpty()) return false;
 484         for (int i = 0; i < value.length(); i++) {
 485             if (i == 0 && value.charAt(i) == '-') {
 486                 if (value.length() == 1) return false;
 487                 else continue;
 488             }
 489             if (Character.digit(value.charAt(i), 10) < 0) return false;
 490         }
 491         return true;
 492     }
 493 }