/**
* Copyright (c) 2015 Cisco 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.openflowplugin.applications.topology.manager;
import com.google.common.base.Optional;
import java.util.Collection;
import javax.annotation.Nonnull;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
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.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
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.inventory.rev130819.nodes.Node;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNodeConnector;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNodeConnectorBuilder;
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.TpId;
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.TerminationPointBuilder;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class TerminationPointChangeListenerImpl extends DataTreeChangeListenerImpl<FlowCapableNodeConnector> {
private static final Logger LOG = LoggerFactory.getLogger(TerminationPointChangeListenerImpl.class);
public TerminationPointChangeListenerImpl(final DataBroker dataBroker, final OperationProcessor operationProcessor) {
super(operationProcessor, dataBroker, InstanceIdentifier.builder(Nodes.class).child(Node.class)
.child(NodeConnector.class).augmentation(FlowCapableNodeConnector.class).build());
this.operationProcessor = operationProcessor;
}
@Override
public void onDataTreeChanged(@Nonnull Collection<DataTreeModification<FlowCapableNodeConnector>> modifications) {
for (DataTreeModification<FlowCapableNodeConnector> modification : modifications) {
switch (modification.getRootNode().getModificationType()) {
case WRITE:
processAddedTerminationPoints(modification);
break;
case SUBTREE_MODIFIED:
processUpdatedTerminationPoints(modification);
break;
case DELETE:
processRemovedTerminationPoints(modification);
break;
default:
throw new IllegalArgumentException("Unhandled modification type: {}" +
modification.getRootNode().getModificationType());
}
}
}
private void processRemovedTerminationPoints(final DataTreeModification<FlowCapableNodeConnector> modification) {
final InstanceIdentifier<FlowCapableNodeConnector> removedNode = modification.getRootPath().getRootIdentifier();
final TpId terminationPointId = provideTopologyTerminationPointId(removedNode);
final InstanceIdentifier<TerminationPoint> iiToTopologyTerminationPoint = provideIIToTopologyTerminationPoint(
terminationPointId, removedNode);
if (iiToTopologyTerminationPoint != null) {
final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node> node = iiToTopologyTerminationPoint.firstIdentifierOf(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class);
operationProcessor.enqueueOperation(new TopologyOperation() {
@Override
public void applyOperation(final ReadWriteTransaction transaction) {
Optional<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node> nodeOptional = Optional.absent();
try {
nodeOptional = transaction.read(LogicalDatastoreType.OPERATIONAL, node).checkedGet();
} catch (ReadFailedException e) {
LOG.warn("Error occured when trying to read NodeConnector: {}", e.getMessage());
LOG.debug("Error occured when trying to read NodeConnector.. ", e);
}
if (nodeOptional.isPresent()) {
TopologyManagerUtil.removeAffectedLinks(terminationPointId, transaction, II_TO_TOPOLOGY);
transaction.delete(LogicalDatastoreType.OPERATIONAL, iiToTopologyTerminationPoint);
}
}
});
} else {
LOG.debug("Instance identifier to inventory wasn't translated to topology while deleting termination point.");
}
}
private void processUpdatedTerminationPoints(final DataTreeModification<FlowCapableNodeConnector> modification) {
// TODO Auto-generated method stub
}
private void processAddedTerminationPoints(final DataTreeModification<FlowCapableNodeConnector> modification) {
final InstanceIdentifier<FlowCapableNodeConnector> iiToNodeInInventory = modification.getRootPath().getRootIdentifier();
TpId terminationPointIdInTopology = provideTopologyTerminationPointId(iiToNodeInInventory);
if (terminationPointIdInTopology != null) {
InstanceIdentifier<TerminationPoint> iiToTopologyTerminationPoint = provideIIToTopologyTerminationPoint(
terminationPointIdInTopology, iiToNodeInInventory);
TerminationPoint point = prepareTopologyTerminationPoint(terminationPointIdInTopology, iiToNodeInInventory);
sendToTransactionChain(point, iiToTopologyTerminationPoint);
removeLinks(modification.getRootNode().getDataAfter(), point);
} else {
LOG.debug("Inventory node connector key is null. Data can't be written to topology termination point");
}
}
private void removeLinks(final FlowCapableNodeConnector flowCapNodeConnector, final TerminationPoint point) {
operationProcessor.enqueueOperation(new TopologyOperation() {
@Override
public void applyOperation(final ReadWriteTransaction transaction) {
if ((flowCapNodeConnector.getState() != null && flowCapNodeConnector.getState().isLinkDown())
|| (flowCapNodeConnector.getConfiguration() != null && flowCapNodeConnector.getConfiguration().isPORTDOWN())) {
TopologyManagerUtil.removeAffectedLinks(point.getTpId(), transaction, II_TO_TOPOLOGY);
}
}
});
}
private static TerminationPoint prepareTopologyTerminationPoint(final TpId terminationPointIdInTopology,
final InstanceIdentifier<FlowCapableNodeConnector> iiToNodeInInventory) {
final InventoryNodeConnector inventoryNodeConnector = new InventoryNodeConnectorBuilder()
.setInventoryNodeConnectorRef(new NodeConnectorRef(iiToNodeInInventory.firstIdentifierOf(NodeConnector.class))).build();
final TerminationPointBuilder terminationPointBuilder = new TerminationPointBuilder();
terminationPointBuilder.setTpId(terminationPointIdInTopology);
terminationPointBuilder.addAugmentation(InventoryNodeConnector.class, inventoryNodeConnector);
return terminationPointBuilder.build();
}
private InstanceIdentifier<TerminationPoint> provideIIToTopologyTerminationPoint(final TpId terminationPointIdInTopology,
final InstanceIdentifier<FlowCapableNodeConnector> iiToNodeInInventory) {
NodeId nodeIdInTopology = provideTopologyNodeId(iiToNodeInInventory);
if (terminationPointIdInTopology != null && nodeIdInTopology != null) {
InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node> iiToTopologyNode = provideIIToTopologyNode(nodeIdInTopology);
return iiToTopologyNode.builder().child(TerminationPoint.class, new TerminationPointKey(terminationPointIdInTopology)).build();
} else {
LOG.debug("Value of termination point ID in topology is null. Instance identifier to topology can't be built");
return null;
}
}
private static TpId provideTopologyTerminationPointId(final InstanceIdentifier<FlowCapableNodeConnector> iiToNodeInInventory) {
NodeConnectorKey inventoryNodeConnectorKey = iiToNodeInInventory.firstKeyOf(NodeConnector.class,
NodeConnectorKey.class);
if (inventoryNodeConnectorKey != null) {
return new TpId(inventoryNodeConnectorKey.getId().getValue());
}
return null;
}
}