pcep/tunnel-provider/src/test/java/org/opendaylight/bgpcep/pcep/tunnel/provider/TunnelProgrammingTest.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
   9 package org.opendaylight.bgpcep.pcep.tunnel.provider;
  10
  11 import com.google.common.collect.Lists;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import java.util.List;
  14 import java.util.concurrent.ExecutionException;
  15 import java.util.concurrent.Executor;
  16 import org.junit.Assert;
  17 import org.junit.Before;
  18 import org.junit.Test;
  19 import org.mockito.Mock;
  20 import org.mockito.Mockito;
  21 import org.mockito.MockitoAnnotations;
  22 import org.opendaylight.bgpcep.programming.spi.Instruction;
  23 import org.opendaylight.bgpcep.programming.spi.InstructionScheduler;
  24 import org.opendaylight.bgpcep.programming.spi.SchedulerException;
  25 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  26 import org.opendaylight.controller.md.sal.binding.test.AbstractConcurrentDataBrokerTest;
  27 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  28 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  29 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
  32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.network.concepts.rev131125.Bandwidth;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.network.topology.rev140113.NetworkTopologyRef;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.AdministrativeStatus;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.PcepCreateP2pTunnelInput1;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.PcepCreateP2pTunnelInput1Builder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.PcepUpdateTunnelInput1;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.PcepUpdateTunnelInput1Builder;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ClassType;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv4Case;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.ipv4._case.Ipv4;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.ero.Subobject;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.programming.rev150720.InstructionStatus;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.programming.rev150720.SubmitInstructionInput;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.IpPrefixCase;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.IpPrefixCaseBuilder;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.ip.prefix._case.IpPrefixBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.AddLspInput;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.AddLspOutput;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.NetworkTopologyPcepService;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.RemoveLspInput;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.RemoveLspOutput;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspInput;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspOutput;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.add.lsp.args.Arguments;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.p2p.rev130819.tunnel.p2p.path.cfg.attributes.ExplicitHops;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.p2p.rev130819.tunnel.p2p.path.cfg.attributes.ExplicitHopsBuilder;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepCreateP2pTunnelInputBuilder;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepDestroyTunnelInputBuilder;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepUpdateTunnelInputBuilder;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.ExplicitHops1;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.ExplicitHops1Builder;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.Link1;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.Link1Builder;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.SupportingNode1;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.SupportingNode1Builder;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.tunnel.pcep.supporting.node.attributes.PathComputationClientBuilder;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.programming.rev130930.create.p2p.tunnel.input.DestinationBuilder;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.programming.rev130930.create.p2p.tunnel.input.SourceBuilder;
  71 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.LinkId;
  72 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  73 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  74 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  75 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TpId;
  76 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  77 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
  78 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  79 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link;
  80 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.LinkBuilder;
  81 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.LinkKey;
  82 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  83 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeBuilder;
  84 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  85 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointBuilder;
  86 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointKey;
  87 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.node.attributes.SupportingNode;
  88 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.node.attributes.SupportingNodeBuilder;
  89 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.node.attributes.SupportingNodeKey;
  90 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.TerminationPoint1;
  91 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.TerminationPoint1Builder;
  92 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.termination.point.attributes.IgpTerminationPointAttributesBuilder;
  93 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.termination.point.attributes.igp.termination.point.attributes.termination.point.type.IpBuilder;
  94 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  95 import org.opendaylight.yangtools.yang.common.RpcResult;
  96
  97 public class TunnelProgrammingTest extends AbstractConcurrentDataBrokerTest {
  98
  99     private static final TopologyId TOPOLOGY_ID = new TopologyId("tunnel-topo");
 100     private static final InstanceIdentifier<Topology> TOPO_IID = InstanceIdentifier.builder(NetworkTopology.class).child(Topology.class, new TopologyKey(TOPOLOGY_ID)).build();
 101
 102     private static final String NODE1_IPV4 = "127.0.0.1";
 103     private static final NodeId NODE1_ID = new NodeId("pcc://" + NODE1_IPV4);
 104     private static final TpId TP1_ID = new TpId(NODE1_IPV4);
 105
 106     private static final String NODE2_IPV4 = "127.0.0.10";
 107     private static final NodeId NODE2_ID = new NodeId("pcc://" + NODE2_IPV4);
 108     private static final TpId TP2_ID = new TpId(NODE2_IPV4);
 109
 110     private static final LinkId LINK1_ID = new LinkId("link1");
 111
 112     private static final String IPV4_PREFIX1 = "195.20.160.40/32";
 113     private static final String IPV4_PREFIX2 = "201.20.160.43/32";
 114
 115     @Mock
 116     private NetworkTopologyPcepService topologyService;
 117     @Mock
 118     private InstructionScheduler scheduler;
 119     @Mock
 120     private ListenableFuture<Instruction> instructionFuture;
 121     @Mock
 122     private Instruction instruction;
 123
 124     private TunnelProgramming tunnelProgramming;
 125
 126     private AddLspInput addLspInput;
 127     private UpdateLspInput updateLspInput;
 128     private RemoveLspInput removeLspInput;
 129
 130     @Mock
 131     private ListenableFuture<RpcResult<AddLspOutput>> futureAddLspOutput;
 132     @Mock
 133     private ListenableFuture<RpcResult<UpdateLspOutput>> futureUpdateLspOutput;
 134     @Mock
 135     private ListenableFuture<RpcResult<RemoveLspOutput>> futureRemoveLspOutput;
 136
 137     @Before
 138     public void setUp() throws SchedulerException, InterruptedException, ExecutionException, TransactionCommitFailedException {
 139         MockitoAnnotations.initMocks(this);
 140         Mockito.doReturn(true).when(this.instruction).checkedExecutionStart();
 141         Mockito.doNothing().when(this.instruction).executionCompleted(InstructionStatus.Failed, null);
 142         Mockito.doAnswer(invocation -> {
 143             final Runnable callback = (Runnable) invocation.getArguments()[0];
 144             callback.run();
 145             return null;
 146         }).when(this.instructionFuture).addListener(Mockito.any(Runnable.class), Mockito.any(Executor.class));
 147         Mockito.doAnswer(invocation -> {
 148             final Runnable callback = (Runnable) invocation.getArguments()[0];
 149             callback.run();
 150             return null;
 151         }).when(this.futureAddLspOutput).addListener(Mockito.any(Runnable.class), Mockito.any(Executor.class));
 152         Mockito.doAnswer(invocation -> {
 153             final Runnable callback = (Runnable) invocation.getArguments()[0];
 154             callback.run();
 155             return null;
 156         }).when(this.futureUpdateLspOutput).addListener(Mockito.any(Runnable.class), Mockito.any(Executor.class));
 157         Mockito.doAnswer(invocation -> {
 158             final Runnable callback = (Runnable) invocation.getArguments()[0];
 159             callback.run();
 160             return null;
 161         }).when(this.futureRemoveLspOutput).addListener(Mockito.any(Runnable.class), Mockito.any(Executor.class));
 162         Mockito.doAnswer(invocation -> {
 163             TunnelProgrammingTest.this.addLspInput = (AddLspInput) invocation.getArguments()[0];
 164             return TunnelProgrammingTest.this.futureAddLspOutput;
 165         }).when(this.topologyService).addLsp(Mockito.any(AddLspInput.class));
 166         Mockito.doAnswer(invocation -> {
 167             TunnelProgrammingTest.this.updateLspInput = (UpdateLspInput) invocation.getArguments()[0];
 168             return TunnelProgrammingTest.this.futureUpdateLspOutput;
 169         }).when(this.topologyService).updateLsp(Mockito.any(UpdateLspInput.class));
 170         Mockito.doAnswer(invocation -> {
 171             TunnelProgrammingTest.this.removeLspInput = (RemoveLspInput) invocation.getArguments()[0];
 172             return TunnelProgrammingTest.this.futureRemoveLspOutput;
 173         }).when(this.topologyService).removeLsp(Mockito.any(RemoveLspInput.class));
 174         Mockito.doReturn(this.instruction).when(this.instructionFuture).get();
 175         Mockito.doReturn(true).when(this.instructionFuture).isDone();
 176         Mockito.doReturn(this.instructionFuture).when(this.scheduler).scheduleInstruction(Mockito.any(SubmitInstructionInput.class));
 177
 178         createInitialTopology();
 179         this.tunnelProgramming = new TunnelProgramming(this.scheduler, getDataBroker(), this.topologyService);
 180     }
 181
 182     @Test
 183     public void testTunnelProgramming() throws TransactionCommitFailedException {
 184         final Bandwidth bwd = new Bandwidth(new byte[] {0x00, 0x00, 0x00, (byte) 0xff});
 185         final ClassType classType = new ClassType((short) 1);
 186         final String tunnelName = "create-tunnel";
 187         final NetworkTopologyRef topologyRef = new NetworkTopologyRef(TOPO_IID);
 188         // create tunnel
 189         final PcepCreateP2pTunnelInputBuilder createInputBuilder = new PcepCreateP2pTunnelInputBuilder();
 190         createInputBuilder.setDestination(new DestinationBuilder().setNode(NODE2_ID).setTp(TP2_ID).build());
 191         createInputBuilder.setSource(new SourceBuilder().setNode(NODE1_ID).setTp(TP1_ID).build());
 192         createInputBuilder.setNetworkTopologyRef(topologyRef);
 193         createInputBuilder.setBandwidth(bwd);
 194         createInputBuilder.setClassType(classType);
 195         createInputBuilder.setSymbolicPathName(tunnelName);
 196         createInputBuilder.setExplicitHops(Lists.newArrayList());
 197         createInputBuilder.addAugmentation(PcepCreateP2pTunnelInput1.class, new PcepCreateP2pTunnelInput1Builder().setAdministrativeStatus(AdministrativeStatus.Active).build());
 198         this.tunnelProgramming.pcepCreateP2pTunnel(createInputBuilder.build());
 199         //check add-lsp input
 200         Assert.assertNotNull(this.addLspInput);
 201         Assert.assertEquals(tunnelName, this.addLspInput.getName());
 202         final Arguments agrs = this.addLspInput.getArguments();
 203         Assert.assertNotNull(agrs);
 204         Assert.assertEquals(bwd, agrs.getBandwidth().getBandwidth());
 205         Assert.assertEquals(classType, agrs.getClassType().getClassType());
 206         final Ipv4 ipv4Endpoints = ((Ipv4Case) agrs.getEndpointsObj().getAddressFamily()).getIpv4();
 207         Assert.assertEquals(NODE1_IPV4, ipv4Endpoints.getSourceIpv4Address().getValue());
 208         Assert.assertEquals(NODE2_IPV4, ipv4Endpoints.getDestinationIpv4Address().getValue());
 209         Assert.assertEquals(NODE1_ID.getValue(), this.addLspInput.getNode().getValue());
 210         createLink();
 211
 212         // update tunnel
 213         final PcepUpdateTunnelInputBuilder updateInputBuilder = new PcepUpdateTunnelInputBuilder();
 214         updateInputBuilder.setNetworkTopologyRef(topologyRef);
 215         updateInputBuilder.setBandwidth(bwd);
 216         updateInputBuilder.setClassType(classType);
 217         updateInputBuilder.setExplicitHops(Lists.newArrayList(createExplicitHop(IPV4_PREFIX1), createExplicitHop(IPV4_PREFIX2)));
 218         updateInputBuilder.setLinkId(LINK1_ID);
 219         updateInputBuilder.addAugmentation(PcepUpdateTunnelInput1.class, new PcepUpdateTunnelInput1Builder().setAdministrativeStatus(AdministrativeStatus.Active).build());
 220         this.tunnelProgramming.pcepUpdateTunnel(updateInputBuilder.build());
 221         //check update-lsp input
 222         Assert.assertNotNull(this.updateLspInput);
 223         Assert.assertEquals(LINK1_ID.getValue(), this.updateLspInput.getName());
 224         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.update.lsp.args.Arguments updArgs = this.updateLspInput.getArguments();
 225         Assert.assertEquals(2, updArgs.getEro().getSubobject().size());
 226         final List<Subobject> subObjects = updArgs.getEro().getSubobject();
 227         final IpPrefixCase prefix1 = (IpPrefixCase)subObjects.get(0).getSubobjectType();
 228         final IpPrefixCase prefix2 = (IpPrefixCase)subObjects.get(1).getSubobjectType();
 229         Assert.assertEquals(IPV4_PREFIX1, prefix1.getIpPrefix().getIpPrefix().getIpv4Prefix().getValue());
 230         Assert.assertEquals(IPV4_PREFIX2, prefix2.getIpPrefix().getIpPrefix().getIpv4Prefix().getValue());
 231
 232         // delete tunnel
 233         final PcepDestroyTunnelInputBuilder destroyInputBuilder = new PcepDestroyTunnelInputBuilder();
 234         destroyInputBuilder.setLinkId(LINK1_ID);
 235         destroyInputBuilder.setNetworkTopologyRef(topologyRef);
 236         this.tunnelProgramming.pcepDestroyTunnel(destroyInputBuilder.build());
 237         Assert.assertNotNull(this.removeLspInput);
 238         Assert.assertEquals(LINK1_ID.getValue(), this.removeLspInput.getName());
 239         Assert.assertEquals(NODE1_ID.getValue(), this.removeLspInput.getNode().getValue());
 240     }
 241
 242     private void createInitialTopology() throws TransactionCommitFailedException {
 243         final TopologyBuilder topologyBuilder = new TopologyBuilder();
 244         topologyBuilder.setKey(new TopologyKey(TOPOLOGY_ID));
 245         topologyBuilder.setServerProvided(true);
 246         topologyBuilder.setTopologyId(TOPOLOGY_ID);
 247         topologyBuilder.setNode(Lists.newArrayList(createNode(NODE1_ID, TP1_ID, NODE1_IPV4), createNode(NODE2_ID, TP2_ID, NODE2_IPV4)));
 248         final WriteTransaction wTx = getDataBroker().newWriteOnlyTransaction();
 249         wTx.put(LogicalDatastoreType.OPERATIONAL, TOPO_IID, topologyBuilder.build(), true);
 250         wTx.submit().checkedGet();
 251     }
 252
 253     private static Node createNode(final NodeId nodeId, final TpId tpId, final String ipv4Address) {
 254         final TerminationPointBuilder tpBuilder = new TerminationPointBuilder();
 255         tpBuilder.setTpId(tpId);
 256         tpBuilder.setKey(new TerminationPointKey(tpId));
 257         tpBuilder.addAugmentation(TerminationPoint1.class, new TerminationPoint1Builder().setIgpTerminationPointAttributes(new IgpTerminationPointAttributesBuilder().setTerminationPointType(new IpBuilder().setIpAddress(Lists.newArrayList(new IpAddress(new Ipv4Address(ipv4Address)))).build()).build()).build());
 258         final NodeBuilder nodeBuilder = new NodeBuilder();
 259         nodeBuilder.setNodeId(nodeId);
 260         nodeBuilder.setKey(new NodeKey(nodeId));
 261         nodeBuilder.setTerminationPoint(Lists.newArrayList(tpBuilder.build()));
 262         final SupportingNode supportingNode = new SupportingNodeBuilder().setKey(new SupportingNodeKey(nodeId, new TopologyId("dummy"))).addAugmentation(SupportingNode1.class, new SupportingNode1Builder().setPathComputationClient(new PathComputationClientBuilder().setControlling(true).build()).build()).build();
 263         nodeBuilder.setSupportingNode(Lists.newArrayList(supportingNode));
 264         return nodeBuilder.build();
 265     }
 266
 267     private static ExplicitHops createExplicitHop(final String ipv4Prefix) {
 268         final ExplicitHopsBuilder explcitHopsBuilder = new ExplicitHopsBuilder();
 269         explcitHopsBuilder.addAugmentation(ExplicitHops1.class, new ExplicitHops1Builder().setSubobjectType(new IpPrefixCaseBuilder().setIpPrefix(new IpPrefixBuilder().setIpPrefix(new IpPrefix(new Ipv4Prefix(ipv4Prefix))).build()).build()).build());
 270         return explcitHopsBuilder.build();
 271     }
 272
 273     private void createLink() throws TransactionCommitFailedException {
 274         final LinkBuilder linkBuilder = new LinkBuilder();
 275         linkBuilder.setSource(new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.SourceBuilder().setSourceNode(NODE1_ID).setSourceTp(TP1_ID).build());
 276         linkBuilder.setDestination(new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.DestinationBuilder().setDestNode(NODE2_ID).setDestTp(TP2_ID).build());
 277         linkBuilder.setLinkId(LINK1_ID);
 278         linkBuilder.setKey(new LinkKey(LINK1_ID));
 279         linkBuilder.addAugmentation(Link1.class, new Link1Builder().setSymbolicPathName(LINK1_ID.getValue()).build());
 280         final WriteTransaction wTx = getDataBroker().newWriteOnlyTransaction();
 281         wTx.put(LogicalDatastoreType.OPERATIONAL, TOPO_IID.builder().child(Link.class, new LinkKey(LINK1_ID)).build(), linkBuilder.build(), true);
 282         wTx.submit().checkedGet();
 283     }
 284
 285 }