Bug 1688: Fix IllegalStateEx from FlowCapableTopologyExporter
[controller.git] / opendaylight / md-sal / topology-manager / src / test / java / org / opendaylight / md / controller / topology / manager / FlowCapableTopologyExporterTest.java
diff --git a/opendaylight/md-sal/topology-manager/src/test/java/org/opendaylight/md/controller/topology/manager/FlowCapableTopologyExporterTest.java b/opendaylight/md-sal/topology-manager/src/test/java/org/opendaylight/md/controller/topology/manager/FlowCapableTopologyExporterTest.java
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+/*
+ * Copyright (c) 2014 Brocade Communications Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.md.controller.topology.manager;
+
+import static org.junit.Assert.fail;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertNotNull;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.inOrder;
+import static org.mockito.Mockito.atLeast;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.InOrder;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.stubbing.Answer;
+import org.opendaylight.controller.md.sal.binding.api.BindingTransactionChain;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnectorUpdated;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnectorUpdatedBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeUpdated;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeUpdatedBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkDiscoveredBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkRemovedBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.PortConfig;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.flow.capable.port.StateBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRemovedBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorUpdatedBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRemovedBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeUpdatedBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNode;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNodeConnector;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.LinkId;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TpId;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.Destination;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.DestinationBuilder;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.Source;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.link.attributes.SourceBuilder;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.LinkBuilder;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.LinkKey;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPoint;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointKey;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
+
+import com.google.common.base.Optional;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.SettableFuture;
+import com.google.common.util.concurrent.Uninterruptibles;
+
+public class FlowCapableTopologyExporterTest {
+
+    @Mock
+    private DataBroker mockDataBroker;
+
+    @Mock
+    private BindingTransactionChain mockTxChain;
+
+    private OperationProcessor processor;
+
+    private FlowCapableTopologyExporter exporter;
+
+    private InstanceIdentifier<Topology> topologyIID;
+
+    private final ExecutorService executor = Executors.newFixedThreadPool(1);
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        doReturn(mockTxChain).when(mockDataBroker)
+                .createTransactionChain(any(TransactionChainListener.class));
+
+        processor = new OperationProcessor(mockDataBroker);
+
+        topologyIID = InstanceIdentifier.create(NetworkTopology.class)
+                .child(Topology.class, new TopologyKey(new TopologyId("test")));
+        exporter = new FlowCapableTopologyExporter(processor, topologyIID);
+
+        executor.execute(processor);
+    }
+
+    @After
+    public void tearDown() {
+        executor.shutdownNow();
+    }
+
+    @SuppressWarnings({ "rawtypes" })
+    @Test
+    public void testOnNodeRemoved() {
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                                                                nodeKey = newInvNodeKey("node1");
+        InstanceIdentifier<?> invNodeID = InstanceIdentifier.create(Nodes.class).child(
+                org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node.class,
+                nodeKey);
+
+        List<Link> linkList = Arrays.asList(
+                newLink("link1", newSourceNode("node1"), newDestNode("dest")),
+                newLink("link2", newSourceNode("source"), newDestNode("node1")),
+                newLink("link2", newSourceNode("source2"), newDestNode("dest2")));
+        final Topology topology = new TopologyBuilder().setLink(linkList).build();
+
+        InstanceIdentifier[] expDeletedIIDs = {
+                topologyIID.child(Link.class, linkList.get(0).getKey()),
+                topologyIID.child(Link.class, linkList.get(1).getKey()),
+                topologyIID.child(Node.class, new NodeKey(new NodeId("node1")))
+            };
+
+        SettableFuture<Optional<Topology>> readFuture = SettableFuture.create();
+        ReadWriteTransaction mockTx1 = mock(ReadWriteTransaction.class);
+        doReturn(Futures.makeChecked(readFuture, ReadFailedException.MAPPER)).when(mockTx1)
+                .read(LogicalDatastoreType.OPERATIONAL, topologyIID);
+
+        CountDownLatch submitLatch1 = setupStubbedSubmit(mockTx1);
+
+        int expDeleteCalls = expDeletedIIDs.length;
+        CountDownLatch deleteLatch = new CountDownLatch(expDeleteCalls);
+        ArgumentCaptor<InstanceIdentifier> deletedLinkIDs =
+                ArgumentCaptor.forClass(InstanceIdentifier.class);
+        setupStubbedDeletes(mockTx1, deletedLinkIDs, deleteLatch);
+
+        ReadWriteTransaction mockTx2 = mock(ReadWriteTransaction.class);
+        setupStubbedDeletes(mockTx2, deletedLinkIDs, deleteLatch);
+        CountDownLatch submitLatch2 = setupStubbedSubmit(mockTx2);
+
+        doReturn(mockTx1).doReturn(mockTx2).when(mockTxChain).newReadWriteTransaction();
+
+        exporter.onNodeRemoved(new NodeRemovedBuilder().setNodeRef(new NodeRef(invNodeID)).build());
+
+        waitForSubmit(submitLatch1);
+
+        setReadFutureAsync(topology, readFuture);
+
+        waitForDeletes(expDeleteCalls, deleteLatch);
+
+        waitForSubmit(submitLatch2);
+
+        assertDeletedIDs(expDeletedIIDs, deletedLinkIDs);
+
+        verifyMockTx(mockTx1);
+        verifyMockTx(mockTx2);
+    }
+
+    @SuppressWarnings({ "rawtypes" })
+    @Test
+    public void testOnNodeRemovedWithNoTopology() {
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                                                                nodeKey = newInvNodeKey("node1");
+        InstanceIdentifier<?> invNodeID = InstanceIdentifier.create(Nodes.class).child(
+                org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node.class,
+                nodeKey);
+
+        InstanceIdentifier[] expDeletedIIDs = {
+                topologyIID.child(Node.class, new NodeKey(new NodeId("node1")))
+            };
+
+        ReadWriteTransaction mockTx = mock(ReadWriteTransaction.class);
+        doReturn(Futures.immediateCheckedFuture(Optional.absent())).when(mockTx)
+                .read(LogicalDatastoreType.OPERATIONAL, topologyIID);
+        CountDownLatch submitLatch = setupStubbedSubmit(mockTx);
+
+        CountDownLatch deleteLatch = new CountDownLatch(1);
+        ArgumentCaptor<InstanceIdentifier> deletedLinkIDs =
+                ArgumentCaptor.forClass(InstanceIdentifier.class);
+        setupStubbedDeletes(mockTx, deletedLinkIDs, deleteLatch);
+
+        doReturn(mockTx).when(mockTxChain).newReadWriteTransaction();
+
+        exporter.onNodeRemoved(new NodeRemovedBuilder().setNodeRef(new NodeRef(invNodeID)).build());
+
+        waitForSubmit(submitLatch);
+
+        waitForDeletes(1, deleteLatch);
+
+        assertDeletedIDs(expDeletedIIDs, deletedLinkIDs);
+    }
+
+    @SuppressWarnings("rawtypes")
+    @Test
+    public void testOnNodeConnectorRemoved() {
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                                                                  nodeKey = newInvNodeKey("node1");
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey ncKey =
+                newInvNodeConnKey("tp1");
+
+        InstanceIdentifier<?> invNodeConnID = newNodeConnID(nodeKey, ncKey);
+
+        List<Link> linkList = Arrays.asList(
+                newLink("link1", newSourceTp("tp1"), newDestTp("dest")),
+                newLink("link2", newSourceTp("source"), newDestTp("tp1")),
+                newLink("link3", newSourceTp("source2"), newDestTp("dest2")));
+        final Topology topology = new TopologyBuilder().setLink(linkList).build();
+
+        InstanceIdentifier[] expDeletedIIDs = {
+                topologyIID.child(Link.class, linkList.get(0).getKey()),
+                topologyIID.child(Link.class, linkList.get(1).getKey()),
+                topologyIID.child(Node.class, new NodeKey(new NodeId("node1")))
+                        .child(TerminationPoint.class, new TerminationPointKey(new TpId("tp1")))
+            };
+
+        final SettableFuture<Optional<Topology>> readFuture = SettableFuture.create();
+        ReadWriteTransaction mockTx1 = mock(ReadWriteTransaction.class);
+        doReturn(Futures.makeChecked(readFuture, ReadFailedException.MAPPER)).when(mockTx1)
+                .read(LogicalDatastoreType.OPERATIONAL, topologyIID);
+
+        CountDownLatch submitLatch1 = setupStubbedSubmit(mockTx1);
+
+        int expDeleteCalls = expDeletedIIDs.length;
+        CountDownLatch deleteLatch = new CountDownLatch(expDeleteCalls);
+        ArgumentCaptor<InstanceIdentifier> deletedLinkIDs =
+                ArgumentCaptor.forClass(InstanceIdentifier.class);
+        setupStubbedDeletes(mockTx1, deletedLinkIDs, deleteLatch);
+
+        ReadWriteTransaction mockTx2 = mock(ReadWriteTransaction.class);
+        setupStubbedDeletes(mockTx2, deletedLinkIDs, deleteLatch);
+        CountDownLatch submitLatch2 = setupStubbedSubmit(mockTx2);
+
+        doReturn(mockTx1).doReturn(mockTx2).when(mockTxChain).newReadWriteTransaction();
+
+        exporter.onNodeConnectorRemoved(new NodeConnectorRemovedBuilder().setNodeConnectorRef(
+                new NodeConnectorRef(invNodeConnID)).build());
+
+        waitForSubmit(submitLatch1);
+
+        setReadFutureAsync(topology, readFuture);
+
+        waitForDeletes(expDeleteCalls, deleteLatch);
+
+        waitForSubmit(submitLatch2);
+
+        assertDeletedIDs(expDeletedIIDs, deletedLinkIDs);
+
+        verifyMockTx(mockTx1);
+        verifyMockTx(mockTx2);
+    }
+
+    @SuppressWarnings("rawtypes")
+    @Test
+    public void testOnNodeConnectorRemovedWithNoTopology() {
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                                                                  nodeKey = newInvNodeKey("node1");
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey ncKey =
+                newInvNodeConnKey("tp1");
+
+        InstanceIdentifier<?> invNodeConnID = newNodeConnID(nodeKey, ncKey);
+
+        InstanceIdentifier[] expDeletedIIDs = {
+                topologyIID.child(Node.class, new NodeKey(new NodeId("node1")))
+                        .child(TerminationPoint.class, new TerminationPointKey(new TpId("tp1")))
+            };
+
+        ReadWriteTransaction mockTx = mock(ReadWriteTransaction.class);
+        doReturn(Futures.immediateCheckedFuture(Optional.absent())).when(mockTx)
+                .read(LogicalDatastoreType.OPERATIONAL, topologyIID);
+        CountDownLatch submitLatch = setupStubbedSubmit(mockTx);
+
+        CountDownLatch deleteLatch = new CountDownLatch(1);
+        ArgumentCaptor<InstanceIdentifier> deletedLinkIDs =
+                ArgumentCaptor.forClass(InstanceIdentifier.class);
+        setupStubbedDeletes(mockTx, deletedLinkIDs, deleteLatch);
+
+        doReturn(mockTx).when(mockTxChain).newReadWriteTransaction();
+
+        exporter.onNodeConnectorRemoved(new NodeConnectorRemovedBuilder().setNodeConnectorRef(
+                new NodeConnectorRef(invNodeConnID)).build());
+
+        waitForSubmit(submitLatch);
+
+        waitForDeletes(1, deleteLatch);
+
+        assertDeletedIDs(expDeletedIIDs, deletedLinkIDs);
+    }
+
+    @Test
+    public void testOnNodeUpdated() {
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                                                            nodeKey = newInvNodeKey("node1");
+        InstanceIdentifier<?> invNodeID = InstanceIdentifier.create(Nodes.class).child(
+                org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node.class,
+                nodeKey);
+
+        ReadWriteTransaction mockTx = mock(ReadWriteTransaction.class);
+        CountDownLatch submitLatch = setupStubbedSubmit(mockTx);
+        doReturn(mockTx).when(mockTxChain).newReadWriteTransaction();
+
+        exporter.onNodeUpdated(new NodeUpdatedBuilder().setNodeRef(new NodeRef(invNodeID))
+                .setId(nodeKey.getId()).addAugmentation(FlowCapableNodeUpdated.class,
+                        new FlowCapableNodeUpdatedBuilder().build()).build());
+
+        waitForSubmit(submitLatch);
+
+        ArgumentCaptor<Node> mergedNode = ArgumentCaptor.forClass(Node.class);
+        NodeId expNodeId = new NodeId("node1");
+        verify(mockTx).merge(eq(LogicalDatastoreType.OPERATIONAL), eq(topologyIID.child(Node.class,
+                new NodeKey(expNodeId))), mergedNode.capture(), eq(true));
+        assertEquals("getNodeId", expNodeId, mergedNode.getValue().getNodeId());
+        InventoryNode augmentation = mergedNode.getValue().getAugmentation(InventoryNode.class);
+        assertNotNull("Missing augmentation", augmentation);
+        assertEquals("getInventoryNodeRef", new NodeRef(invNodeID), augmentation.getInventoryNodeRef());
+    }
+
+    @SuppressWarnings("rawtypes")
+    @Test
+    public void testOnNodeConnectorUpdated() {
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                                                                 nodeKey = newInvNodeKey("node1");
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey ncKey =
+                newInvNodeConnKey("tp1");
+
+        InstanceIdentifier<?> invNodeConnID = newNodeConnID(nodeKey, ncKey);
+
+        ReadWriteTransaction mockTx = mock(ReadWriteTransaction.class);
+        CountDownLatch submitLatch = setupStubbedSubmit(mockTx);
+        doReturn(mockTx).when(mockTxChain).newReadWriteTransaction();
+
+        exporter.onNodeConnectorUpdated(new NodeConnectorUpdatedBuilder().setNodeConnectorRef(
+                new NodeConnectorRef(invNodeConnID)).setId(ncKey.getId()).addAugmentation(
+                        FlowCapableNodeConnectorUpdated.class,
+                        new FlowCapableNodeConnectorUpdatedBuilder().build()).build());
+
+        waitForSubmit(submitLatch);
+
+        ArgumentCaptor<TerminationPoint> mergedNode = ArgumentCaptor.forClass(TerminationPoint.class);
+        NodeId expNodeId = new NodeId("node1");
+        TpId expTpId = new TpId("tp1");
+        InstanceIdentifier<TerminationPoint> expTpPath = topologyIID.child(
+                Node.class, new NodeKey(expNodeId)).child(TerminationPoint.class,
+                        new TerminationPointKey(expTpId));
+        verify(mockTx).merge(eq(LogicalDatastoreType.OPERATIONAL), eq(expTpPath),
+                mergedNode.capture(), eq(true));
+        assertEquals("getTpId", expTpId, mergedNode.getValue().getTpId());
+        InventoryNodeConnector augmentation = mergedNode.getValue().getAugmentation(
+                InventoryNodeConnector.class);
+        assertNotNull("Missing augmentation", augmentation);
+        assertEquals("getInventoryNodeConnectorRef", new NodeConnectorRef(invNodeConnID),
+                augmentation.getInventoryNodeConnectorRef());
+    }
+
+    @SuppressWarnings("rawtypes")
+    @Test
+    public void testOnNodeConnectorUpdatedWithLinkStateDown() {
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                                                                 nodeKey = newInvNodeKey("node1");
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey ncKey =
+                newInvNodeConnKey("tp1");
+
+        InstanceIdentifier<?> invNodeConnID = newNodeConnID(nodeKey, ncKey);
+
+        List<Link> linkList = Arrays.asList(newLink("link1", newSourceTp("tp1"), newDestTp("dest")));
+        Topology topology = new TopologyBuilder().setLink(linkList).build();
+
+        ReadWriteTransaction mockTx = mock(ReadWriteTransaction.class);
+        doReturn(Futures.immediateCheckedFuture(Optional.of(topology))).when(mockTx)
+                .read(LogicalDatastoreType.OPERATIONAL, topologyIID);
+        setupStubbedSubmit(mockTx);
+
+        CountDownLatch deleteLatch = new CountDownLatch(1);
+        ArgumentCaptor<InstanceIdentifier> deletedLinkIDs =
+                ArgumentCaptor.forClass(InstanceIdentifier.class);
+        setupStubbedDeletes(mockTx, deletedLinkIDs, deleteLatch);
+
+        doReturn(mockTx).when(mockTxChain).newReadWriteTransaction();
+
+        exporter.onNodeConnectorUpdated(new NodeConnectorUpdatedBuilder().setNodeConnectorRef(
+                new NodeConnectorRef(invNodeConnID)).setId(ncKey.getId()).addAugmentation(
+                        FlowCapableNodeConnectorUpdated.class,
+                        new FlowCapableNodeConnectorUpdatedBuilder().setState(
+                                new StateBuilder().setLinkDown(true).build()).build()).build());
+
+        waitForDeletes(1, deleteLatch);
+
+        InstanceIdentifier<TerminationPoint> expTpPath = topologyIID.child(
+                Node.class, new NodeKey(new NodeId("node1"))).child(TerminationPoint.class,
+                        new TerminationPointKey(new TpId("tp1")));
+
+        verify(mockTx).merge(eq(LogicalDatastoreType.OPERATIONAL), eq(expTpPath),
+                any(TerminationPoint.class), eq(true));
+
+        assertDeletedIDs(new InstanceIdentifier[]{topologyIID.child(Link.class,
+                linkList.get(0).getKey())}, deletedLinkIDs);
+    }
+
+
+    @SuppressWarnings("rawtypes")
+    @Test
+    public void testOnNodeConnectorUpdatedWithPortDown() {
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                                                                 nodeKey = newInvNodeKey("node1");
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey ncKey =
+                newInvNodeConnKey("tp1");
+
+        InstanceIdentifier<?> invNodeConnID = newNodeConnID(nodeKey, ncKey);
+
+        List<Link> linkList = Arrays.asList(newLink("link1", newSourceTp("tp1"), newDestTp("dest")));
+        Topology topology = new TopologyBuilder().setLink(linkList).build();
+
+        ReadWriteTransaction mockTx = mock(ReadWriteTransaction.class);
+        doReturn(Futures.immediateCheckedFuture(Optional.of(topology))).when(mockTx)
+                .read(LogicalDatastoreType.OPERATIONAL, topologyIID);
+        setupStubbedSubmit(mockTx);
+
+        CountDownLatch deleteLatch = new CountDownLatch(1);
+        ArgumentCaptor<InstanceIdentifier> deletedLinkIDs =
+                ArgumentCaptor.forClass(InstanceIdentifier.class);
+        setupStubbedDeletes(mockTx, deletedLinkIDs, deleteLatch);
+
+        doReturn(mockTx).when(mockTxChain).newReadWriteTransaction();
+
+        exporter.onNodeConnectorUpdated(new NodeConnectorUpdatedBuilder().setNodeConnectorRef(
+                new NodeConnectorRef(invNodeConnID)).setId(ncKey.getId()).addAugmentation(
+                        FlowCapableNodeConnectorUpdated.class,
+                        new FlowCapableNodeConnectorUpdatedBuilder().setConfiguration(
+                                new PortConfig(true, true, true, true)).build()).build());
+
+        waitForDeletes(1, deleteLatch);
+
+        InstanceIdentifier<TerminationPoint> expTpPath = topologyIID.child(
+                Node.class, new NodeKey(new NodeId("node1"))).child(TerminationPoint.class,
+                        new TerminationPointKey(new TpId("tp1")));
+
+        verify(mockTx).merge(eq(LogicalDatastoreType.OPERATIONAL), eq(expTpPath),
+                any(TerminationPoint.class), eq(true));
+
+        assertDeletedIDs(new InstanceIdentifier[]{topologyIID.child(Link.class,
+                linkList.get(0).getKey())}, deletedLinkIDs);
+    }
+
+    @Test
+    public void testOnLinkDiscovered() {
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                sourceNodeKey = newInvNodeKey("sourceNode");
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey
+                sourceNodeConnKey = newInvNodeConnKey("sourceTP");
+        InstanceIdentifier<?> sourceConnID = newNodeConnID(sourceNodeKey, sourceNodeConnKey);
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                destNodeKey = newInvNodeKey("destNode");
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey
+                destNodeConnKey = newInvNodeConnKey("destTP");
+        InstanceIdentifier<?> destConnID = newNodeConnID(destNodeKey, destNodeConnKey);
+
+        ReadWriteTransaction mockTx = mock(ReadWriteTransaction.class);
+        CountDownLatch submitLatch = setupStubbedSubmit(mockTx);
+        doReturn(mockTx).when(mockTxChain).newReadWriteTransaction();
+
+        exporter.onLinkDiscovered(new LinkDiscoveredBuilder().setSource(
+                new NodeConnectorRef(sourceConnID)).setDestination(
+                        new NodeConnectorRef(destConnID)).build());
+
+        waitForSubmit(submitLatch);
+
+        ArgumentCaptor<Link> mergedNode = ArgumentCaptor.forClass(Link.class);
+        verify(mockTx).merge(eq(LogicalDatastoreType.OPERATIONAL), eq(topologyIID.child(
+                Link.class, new LinkKey(new LinkId(sourceNodeConnKey.getId())))),
+                mergedNode.capture(), eq(true));
+        assertEquals("Source node ID", "sourceNode",
+                mergedNode.getValue().getSource().getSourceNode().getValue());
+        assertEquals("Dest TP ID", "sourceTP",
+                mergedNode.getValue().getSource().getSourceTp().getValue());
+        assertEquals("Dest node ID", "destNode",
+                mergedNode.getValue().getDestination().getDestNode().getValue());
+        assertEquals("Dest TP ID", "destTP",
+                mergedNode.getValue().getDestination().getDestTp().getValue());
+    }
+
+    @Test
+    public void testOnLinkRemoved() {
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                sourceNodeKey = newInvNodeKey("sourceNode");
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey
+                sourceNodeConnKey = newInvNodeConnKey("sourceTP");
+        InstanceIdentifier<?> sourceConnID = newNodeConnID(sourceNodeKey, sourceNodeConnKey);
+
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                destNodeKey = newInvNodeKey("destNode");
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey
+                destNodeConnKey = newInvNodeConnKey("destTP");
+        InstanceIdentifier<?> destConnID = newNodeConnID(destNodeKey, destNodeConnKey);
+
+        ReadWriteTransaction mockTx = mock(ReadWriteTransaction.class);
+        CountDownLatch submitLatch = setupStubbedSubmit(mockTx);
+        doReturn(mockTx).when(mockTxChain).newReadWriteTransaction();
+
+        exporter.onLinkRemoved(new LinkRemovedBuilder().setSource(
+                new NodeConnectorRef(sourceConnID)).setDestination(
+                        new NodeConnectorRef(destConnID)).build());
+
+        waitForSubmit(submitLatch);
+
+        verify(mockTx).delete(LogicalDatastoreType.OPERATIONAL, topologyIID.child(
+                Link.class, new LinkKey(new LinkId(sourceNodeConnKey.getId()))));
+    }
+
+    private void verifyMockTx(ReadWriteTransaction mockTx) {
+        InOrder inOrder = inOrder(mockTx);
+        inOrder.verify(mockTx, atLeast(0)).submit();
+        inOrder.verify(mockTx, never()).delete(eq(LogicalDatastoreType.OPERATIONAL),
+              any(InstanceIdentifier.class));
+    }
+
+    @SuppressWarnings("rawtypes")
+    private void assertDeletedIDs(InstanceIdentifier[] expDeletedIIDs,
+            ArgumentCaptor<InstanceIdentifier> deletedLinkIDs) {
+        Set<InstanceIdentifier> actualIIDs = new HashSet<>(deletedLinkIDs.getAllValues());
+        for(InstanceIdentifier id: expDeletedIIDs) {
+            assertTrue("Missing expected deleted IID " + id, actualIIDs.contains(id));
+        }
+    }
+
+    private void setReadFutureAsync(final Topology topology,
+            final SettableFuture<Optional<Topology>> readFuture) {
+        new Thread() {
+            @Override
+            public void run() {
+                Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
+                readFuture.set(Optional.of(topology));
+            }
+
+        }.start();
+    }
+
+    private void waitForSubmit(CountDownLatch latch) {
+        assertEquals("Transaction submitted", true,
+                Uninterruptibles.awaitUninterruptibly(latch, 5, TimeUnit.SECONDS));
+    }
+
+    private void waitForDeletes(int expDeleteCalls, final CountDownLatch latch) {
+        boolean done = Uninterruptibles.awaitUninterruptibly(latch, 5, TimeUnit.SECONDS);
+        if(!done) {
+            fail("Expected " + expDeleteCalls + " delete calls. Actual: " +
+                    (expDeleteCalls - latch.getCount()));
+        }
+    }
+
+    private CountDownLatch setupStubbedSubmit(ReadWriteTransaction mockTx) {
+        final CountDownLatch latch = new CountDownLatch(1);
+        doAnswer(new Answer<CheckedFuture<Void, TransactionCommitFailedException>>() {
+            @Override
+            public CheckedFuture<Void, TransactionCommitFailedException> answer(
+                                                            InvocationOnMock invocation) {
+                latch.countDown();
+                return Futures.immediateCheckedFuture(null);
+            }
+        }).when(mockTx).submit();
+
+        return latch;
+    }
+
+    @SuppressWarnings("rawtypes")
+    private void setupStubbedDeletes(ReadWriteTransaction mockTx,
+            ArgumentCaptor<InstanceIdentifier> deletedLinkIDs, final CountDownLatch latch) {
+        doAnswer(new Answer<Void>() {
+            @Override
+            public Void answer(InvocationOnMock invocation) {
+                latch.countDown();
+                return null;
+            }
+        }).when(mockTx).delete(eq(LogicalDatastoreType.OPERATIONAL), deletedLinkIDs.capture());
+    }
+
+    private org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey
+                                                                        newInvNodeKey(String id) {
+        org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey nodeKey =
+                new org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey(
+                        new org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.
+                                                                      rev130819.NodeId(id));
+        return nodeKey;
+    }
+
+    private NodeConnectorKey newInvNodeConnKey(String id) {
+        return new org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey(
+                new org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.
+                                                               NodeConnectorId(id));
+    }
+
+    private KeyedInstanceIdentifier<NodeConnector, NodeConnectorKey> newNodeConnID(
+            org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey nodeKey,
+            org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey ncKey) {
+        return InstanceIdentifier.create(Nodes.class).child(
+                org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node.class,
+                nodeKey).child(org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.
+                        rev130819.node.NodeConnector.class, ncKey);
+    }
+
+    private Link newLink(String id, Source source, Destination dest) {
+        return new LinkBuilder().setLinkId(new LinkId(id))
+                .setSource(source).setDestination(dest).build();
+    }
+
+    private Destination newDestTp(String id) {
+        return new DestinationBuilder().setDestTp(new TpId(id)).build();
+    }
+
+    private Source newSourceTp(String id) {
+        return new SourceBuilder().setSourceTp(new TpId(id)).build();
+    }
+
+    private Destination newDestNode(String id) {
+        return new DestinationBuilder().setDestNode(new NodeId(id)).build();
+    }
+
+    private Source newSourceNode(String id) {
+        return new SourceBuilder().setSourceNode(new NodeId(id)).build();
+    }
+}