mdsalutil/mdsalutil-api/src/main/java/org/opendaylight/vpnservice/mdsalutil/MDSALUtil.java

   1 /*
   2  * Copyright (c) 2015 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.vpnservice.mdsalutil;
  10
  11 import java.math.BigInteger;
  12 import java.util.ArrayList;
  13 import java.util.HashMap;
  14 import java.util.List;
  15 import java.util.Map;
  16 import java.util.concurrent.ConcurrentHashMap;
  17 import java.util.concurrent.ExecutionException;
  18 import java.util.concurrent.LinkedBlockingQueue;
  19
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.action.PopVlanActionCaseBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.action.pop.vlan.action._case.PopVlanActionBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionKey;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowCookie;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.Action;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowKey;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowModFlags;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.Instructions;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.InstructionsBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.Match;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.MatchBuilder;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.ApplyActionsCase;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.ApplyActionsCaseBuilder;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.WriteMetadataCaseBuilder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.apply.actions._case.ApplyActions;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.apply.actions._case.ApplyActionsBuilder;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.write.metadata._case.WriteMetadataBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionBuilder;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionKey;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.BucketId;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupTypes;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.Buckets;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.BucketsBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.Bucket;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.BucketBuilder;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupBuilder;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupKey;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  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.Nodes;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInputBuilder;
  65 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  66 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
  67 import org.opendaylight.yangtools.yang.binding.DataObject;
  68 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  69 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  70 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  71 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  72 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  73 import org.slf4j.Logger;
  74 import org.slf4j.LoggerFactory;
  75
  76 import com.google.common.base.Joiner;
  77 import com.google.common.base.Optional;
  78 import com.google.common.primitives.Bytes;
  79 import com.google.common.primitives.Ints;
  80 import com.google.common.util.concurrent.CheckedFuture;
  81
  82 public class MDSALUtil {
  83
  84     public static final String NODE_PREFIX = "openflow";
  85     public static final String SEPARATOR = ":";
  86     private static final Buckets EMPTY_Buckets = new BucketsBuilder().build();
  87     private static final Instructions EMPTY_Instructions = new InstructionsBuilder().setInstruction(
  88             new ArrayList<Instruction>()).build();
  89     private static final Match EMPTY_Matches = new MatchBuilder().build();
  90     private static final Logger logger = LoggerFactory.getLogger(MDSALUtil.class);
  91
  92     public static FlowEntity buildFlowEntity(BigInteger dpnId, short tableId, String flowId, int priority, String flowName,
  93             int idleTimeOut, int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo,
  94             List<InstructionInfo> listInstructionInfo) {
  95
  96         FlowEntity flowEntity = new FlowEntity(dpnId);
  97
  98         flowEntity.setTableId(tableId);
  99         flowEntity.setFlowId(flowId);
 100         flowEntity.setPriority(priority);
 101         flowEntity.setFlowName(flowName);
 102         flowEntity.setIdleTimeOut(idleTimeOut);
 103         flowEntity.setHardTimeOut(hardTimeOut);
 104         flowEntity.setCookie(cookie);
 105         flowEntity.setMatchInfoList(listMatchInfo);
 106         flowEntity.setInstructionInfoList(listInstructionInfo);
 107
 108         return flowEntity;
 109     }
 110
 111     // TODO: CHECK IF THIS IS USED
 112     public static Flow buildFlow(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 113             int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo, List<InstructionInfo> listInstructionInfo) {
 114         return MDSALUtil.buildFlow(tableId, flowId, priority, flowName, idleTimeOut, hardTimeOut, cookie,
 115                 listMatchInfo, listInstructionInfo, true);
 116     }
 117
 118     public static Flow buildFlow(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 119             int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo,
 120             List<InstructionInfo> listInstructionInfo, boolean isStrict) {
 121         FlowKey key = new FlowKey(new FlowId(flowId));
 122         return new FlowBuilder().setMatch(buildMatches(listMatchInfo)).setKey(key)
 123                 .setPriority(Integer.valueOf(priority)).setInstructions(buildInstructions(listInstructionInfo))
 124                 .setBarrier(false).setInstallHw(true).setHardTimeout(hardTimeOut).setIdleTimeout(idleTimeOut)
 125                 .setFlowName(flowName).setTableId(Short.valueOf(tableId)).setStrict(isStrict)
 126                 .setCookie(new FlowCookie(cookie)).build();
 127     }
 128
 129     public static Flow buildFlowNew(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 130                                  int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo, List<Instruction> listInstructionInfo) {
 131         return MDSALUtil.buildFlowNew(tableId, flowId, priority, flowName, idleTimeOut, hardTimeOut, cookie,
 132                 listMatchInfo, listInstructionInfo, true);
 133     }
 134
 135     private static Flow buildFlowNew(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 136                                   int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo,
 137                                   List<Instruction> listInstructionInfo, boolean isStrict) {
 138         FlowKey key = new FlowKey(new FlowId(flowId));
 139         return new FlowBuilder().setMatch(buildMatches(listMatchInfo)).setKey(key)
 140                 .setPriority(Integer.valueOf(priority)).setInstructions(new InstructionsBuilder().setInstruction(listInstructionInfo).build())
 141                 .setBarrier(false).setInstallHw(true).setHardTimeout(hardTimeOut).setIdleTimeout(idleTimeOut)
 142                 .setFlowName(flowName).setTableId(Short.valueOf(tableId)).setStrict(isStrict)
 143                 .setCookie(new FlowCookie(cookie)).build();
 144     }
 145
 146     public static GroupEntity buildGroupEntity(BigInteger dpnId, long groupId, String groupName, GroupTypes groupType,
 147             List<BucketInfo> listBucketInfo) {
 148
 149         GroupEntity groupEntity = new GroupEntity(dpnId);
 150
 151         groupEntity.setGroupId(groupId);
 152         groupEntity.setGroupName(groupName);
 153         groupEntity.setGroupType(groupType);
 154         groupEntity.setBucketInfoList(listBucketInfo);
 155
 156         return groupEntity;
 157     }
 158
 159     public static TransmitPacketInput getPacketOutDefault(List<ActionInfo> actionInfos, byte[] payload, BigInteger dpnId) {
 160         return new TransmitPacketInputBuilder()
 161                 .setAction(buildActions(actionInfos))
 162                 .setPayload(payload)
 163                 .setNode(
 164                         new NodeRef(InstanceIdentifier.builder(Nodes.class)
 165                                 .child(Node.class, new NodeKey(new NodeId("openflow:" + dpnId))).toInstance()))
 166                 .setIngress(getDefaultNodeConnRef(dpnId)).setEgress(getDefaultNodeConnRef(dpnId)).build();
 167     }
 168
 169     public static TransmitPacketInput getPacketOut(List<ActionInfo> actionInfos, byte[] payload, long dpnId,
 170             NodeConnectorRef ingress) {
 171         return new TransmitPacketInputBuilder()
 172                 .setAction(buildActions(actionInfos))
 173                 .setPayload(payload)
 174                 .setNode(
 175                         new NodeRef(InstanceIdentifier.builder(Nodes.class)
 176                                 .child(Node.class, new NodeKey(new NodeId("openflow:" + dpnId))).toInstance()))
 177                 .setIngress(ingress).setEgress(ingress).build();
 178     }
 179
 180     private static List<Action> buildActions(List<ActionInfo> actions) {
 181         List<Action> actionsList = new ArrayList<Action>();
 182         for (ActionInfo actionInfo : actions) {
 183             actionsList.add(actionInfo.buildAction());
 184         }
 185         return actionsList;
 186     }
 187
 188     public static String longToIp(long ip, long mask) {
 189         StringBuilder sb = new StringBuilder(15);
 190         Joiner joiner = Joiner.on('.');
 191
 192         joiner.appendTo(sb, Bytes.asList(Ints.toByteArray((int) ip)));
 193
 194         sb.append("/" + mask);
 195
 196         return sb.toString();
 197     }
 198
 199     protected static Buckets buildBuckets(List<BucketInfo> listBucketInfo) {
 200         long i = 0;
 201         if (listBucketInfo != null) {
 202             BucketsBuilder bucketsBuilder = new BucketsBuilder();
 203             List<Bucket> bucketList = new ArrayList<Bucket>();
 204
 205             for (BucketInfo bucketInfo : listBucketInfo) {
 206                 BucketBuilder bucketBuilder = new BucketBuilder();
 207                 List<Action> actionsList = new ArrayList<Action>();
 208
 209                 bucketInfo.buildAndAddActions(actionsList);
 210                 bucketBuilder.setAction(actionsList);
 211                 bucketBuilder.setWeight(bucketInfo.getWeight());
 212                 bucketBuilder.setBucketId(new BucketId(i++));
 213                 bucketBuilder.setWeight(bucketInfo.getWeight()).setWatchPort(bucketInfo.getWatchPort())
 214                         .setWatchGroup(bucketInfo.getWatchGroup());
 215                 bucketList.add(bucketBuilder.build());
 216             }
 217
 218             bucketsBuilder.setBucket(bucketList);
 219             return bucketsBuilder.build();
 220         }
 221
 222         return EMPTY_Buckets;
 223     }
 224
 225     protected static Instructions buildInstructions(List<InstructionInfo> listInstructionInfo) {
 226         if (listInstructionInfo != null) {
 227             List<Instruction> instructions = new ArrayList<Instruction>();
 228             int instructionKey = 0;
 229
 230             for (InstructionInfo instructionInfo : listInstructionInfo) {
 231                 instructions.add(instructionInfo.buildInstruction(instructionKey));
 232                 instructionKey++;
 233             }
 234
 235             return new InstructionsBuilder().setInstruction(instructions).build();
 236         }
 237
 238         return EMPTY_Instructions;
 239     }
 240
 241     protected static Match buildMatches(List<MatchInfo> listMatchInfo) {
 242         if (listMatchInfo != null) {
 243             MatchBuilder matchBuilder = new MatchBuilder();
 244             Map<Class<?>, Object> mapMatchBuilder = new HashMap<Class<?>, Object>();
 245
 246             for (MatchInfo matchInfo : listMatchInfo) {
 247                 matchInfo.createInnerMatchBuilder(mapMatchBuilder);
 248             }
 249
 250             for (MatchInfo matchInfo : listMatchInfo) {
 251                 matchInfo.setMatch(matchBuilder, mapMatchBuilder);
 252             }
 253
 254             return matchBuilder.build();
 255         }
 256
 257         return EMPTY_Matches;
 258     }
 259
 260     // TODO: Check the port const
 261     public static NodeConnectorRef getDefaultNodeConnRef(BigInteger nDpId) {
 262         return getNodeConnRef(NODE_PREFIX + SEPARATOR + nDpId, "0xfffffffd");
 263     }
 264
 265     public static NodeConnectorRef getNodeConnRef(BigInteger nDpId, String port) {
 266         return getNodeConnRef(NODE_PREFIX + SEPARATOR + nDpId, port);
 267     }
 268
 269     public static NodeConnectorRef getNodeConnRef(String sNodeId, String port) {
 270         String sNodeConnectorKey;
 271         StringBuilder sbTmp;
 272         NodeId nodeId;
 273         NodeKey nodeKey;
 274         NodeConnectorId nodeConnectorId;
 275         NodeConnectorKey nodeConnectorKey;
 276         InstanceIdentifierBuilder<Nodes> nodesInstanceIdentifierBuilder;
 277         InstanceIdentifierBuilder<Node> nodeInstanceIdentifierBuilder;
 278         InstanceIdentifierBuilder<NodeConnector> nodeConnectorInstanceIdentifierBuilder;
 279         InstanceIdentifier<NodeConnector> nodeConnectorInstanceIdentifier;
 280         NodeConnectorRef nodeConnectorRef;
 281
 282         sbTmp = new StringBuilder();
 283
 284         sbTmp.append(sNodeId);
 285         sbTmp.append(SEPARATOR);
 286         sbTmp.append(port);
 287
 288         sNodeConnectorKey = sbTmp.toString();
 289         nodeConnectorId = new NodeConnectorId(sNodeConnectorKey);
 290         nodeConnectorKey = new NodeConnectorKey(nodeConnectorId);
 291
 292         nodeId = new NodeId(sNodeId);
 293         nodeKey = new NodeKey(nodeId);
 294
 295         nodesInstanceIdentifierBuilder = InstanceIdentifier.<Nodes> builder(Nodes.class);
 296         nodeInstanceIdentifierBuilder = nodesInstanceIdentifierBuilder.<Node, NodeKey> child(Node.class, nodeKey);
 297         nodeConnectorInstanceIdentifierBuilder = nodeInstanceIdentifierBuilder.<NodeConnector, NodeConnectorKey> child(
 298                 NodeConnector.class, nodeConnectorKey);
 299         nodeConnectorInstanceIdentifier = nodeConnectorInstanceIdentifierBuilder.toInstance();
 300         nodeConnectorRef = new NodeConnectorRef(nodeConnectorInstanceIdentifier);
 301         return nodeConnectorRef;
 302     }
 303
 304     public static BigInteger getDpnIdFromNodeName(NodeId nodeId) {
 305         return getDpnIdFromNodeName(nodeId.getValue());
 306     }
 307
 308     public static BigInteger getDpnIdFromNodeName(String sMdsalNodeName) {
 309         String sDpId = sMdsalNodeName.substring(sMdsalNodeName.lastIndexOf(":") + 1);
 310         return new BigInteger(sDpId);
 311     }
 312
 313     public static long getOfPortNumberFromPortName(NodeConnectorId nodeConnectorId) {
 314         return getOfPortNumberFromPortName(nodeConnectorId.getValue());
 315     }
 316
 317     public static long getOfPortNumberFromPortName(String sMdsalPortName) {
 318         String sPortNumber = sMdsalPortName.substring(sMdsalPortName.lastIndexOf(":") + 1);
 319         return Long.parseLong(sPortNumber);
 320     }
 321
 322     public static TransmitPacketInput getPacketOut(List<ActionInfo> actionInfos, byte[] payload, BigInteger dpnId,
 323                     NodeConnectorRef nodeConnRef) {
 324         // TODO Auto-generated method stub
 325         return null;
 326     }
 327
 328     public static Instruction buildAndGetPopVlanActionInstruction(int actionKey, int instructionKey) {
 329         Action popVlanAction = new ActionBuilder().setAction(
 330                 new PopVlanActionCaseBuilder().setPopVlanAction(new PopVlanActionBuilder().build()).build())
 331                 .setKey(new ActionKey(actionKey)).build();
 332         List<Action> listAction = new ArrayList<Action> ();
 333         listAction.add(popVlanAction);
 334         ApplyActions applyActions = new ApplyActionsBuilder().setAction(listAction).build();
 335         ApplyActionsCase applyActionsCase = new ApplyActionsCaseBuilder().setApplyActions(applyActions).build();
 336         InstructionBuilder instructionBuilder = new InstructionBuilder();
 337
 338         instructionBuilder.setInstruction(applyActionsCase);
 339         instructionBuilder.setKey(new InstructionKey(instructionKey));
 340         return instructionBuilder.build();
 341     }
 342
 343     public static Instruction buildAndGetWriteMetadaInstruction(BigInteger metadata,
 344                                                                 BigInteger mask, int instructionKey) {
 345         return new InstructionBuilder()
 346                 .setInstruction(
 347                         new WriteMetadataCaseBuilder().setWriteMetadata(
 348                                 new WriteMetadataBuilder().setMetadata(metadata).setMetadataMask(mask).build())
 349                                 .build()).setKey(new InstructionKey(instructionKey)).build();
 350     }
 351
 352     public static <T extends DataObject> Optional<T> read(LogicalDatastoreType datastoreType,
 353                                                           InstanceIdentifier<T> path, DataBroker broker) {
 354
 355         ReadOnlyTransaction tx = broker.newReadOnlyTransaction();
 356
 357         Optional<T> result = Optional.absent();
 358         try {
 359             result = tx.read(datastoreType, path).get();
 360         } catch (Exception e) {
 361             logger.error("An error occured while reading data from the path {} with the exception {}", path, e);
 362         }
 363         return result;
 364     }
 365
 366     public static <T extends DataObject> Optional<T> read(DataBroker broker,
 367                                                           LogicalDatastoreType datastoreType, InstanceIdentifier<T> path) {
 368
 369         ReadOnlyTransaction tx = broker.newReadOnlyTransaction();
 370
 371         Optional<T> result = Optional.absent();
 372         try {
 373             result = tx.read(datastoreType, path).get();
 374         } catch (Exception e) {
 375             throw new RuntimeException(e);
 376         }
 377
 378         return result;
 379     }
 380
 381     public static <T extends DataObject> void syncWrite(DataBroker broker,
 382                                                         LogicalDatastoreType datastoreType, InstanceIdentifier<T> path,
 383                                                         T data) {
 384         WriteTransaction tx = broker.newWriteOnlyTransaction();
 385         tx.put(datastoreType, path, data, true);
 386         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
 387         try {
 388             futures.get();
 389         } catch (InterruptedException | ExecutionException e) {
 390             logger.error("Error writing to datastore (path, data) : ({}, {})", path, data);
 391             throw new RuntimeException(e.getMessage());
 392         }
 393     }
 394
 395     public static <T extends DataObject> void syncUpdate(DataBroker broker,
 396                                                          LogicalDatastoreType datastoreType, InstanceIdentifier<T> path,
 397                                                          T data) {
 398         WriteTransaction tx = broker.newWriteOnlyTransaction();
 399         tx.merge(datastoreType, path, data, true);
 400         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
 401         try {
 402             futures.get();
 403         } catch (InterruptedException | ExecutionException e) {
 404             logger.error("Error writing to datastore (path, data) : ({}, {})", path, data);
 405             throw new RuntimeException(e.getMessage());
 406         }
 407     }
 408
 409     public static <T extends DataObject> void syncDelete(DataBroker broker,
 410                                                          LogicalDatastoreType datastoreType, InstanceIdentifier<T> obj) {
 411         WriteTransaction tx = broker.newWriteOnlyTransaction();
 412         tx.delete(datastoreType, obj);
 413         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
 414         try {
 415             futures.get();
 416         } catch (InterruptedException | ExecutionException e) {
 417             logger.error("Error deleting from datastore (path) : ({})", obj);
 418             throw new RuntimeException(e.getMessage());
 419         }
 420     }
 421 }