/**
* 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 java.util.concurrent.Callable;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
import org.opendaylight.openflowplugin.common.wait.SimpleTaskRetryLooper;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
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.network.topology.Topology;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public abstract class DataTreeChangeListenerImpl<T extends DataObject> implements DataTreeChangeListener<T>, AutoCloseable {
private static final Logger LOG = LoggerFactory.getLogger(DataTreeChangeListenerImpl.class);
private static final long STARTUP_LOOP_TICK = 500L;
private static final int STARTUP_LOOP_MAX_RETRIES = 8;
protected final ListenerRegistration<DataTreeChangeListener> listenerRegistration;
protected OperationProcessor operationProcessor;
/**
* instance identifier to Node in network topology model (yangtools)
*/
protected static final InstanceIdentifier<Topology> II_TO_TOPOLOGY =
InstanceIdentifier
.create(NetworkTopology.class)
.child(Topology.class, new TopologyKey(new TopologyId(FlowCapableTopologyProvider.TOPOLOGY_ID)));
public DataTreeChangeListenerImpl(final OperationProcessor operationProcessor,
final DataBroker dataBroker,
final InstanceIdentifier<T> ii) {
final DataTreeIdentifier<T> identifier = new DataTreeIdentifier(LogicalDatastoreType.OPERATIONAL, ii);
final SimpleTaskRetryLooper looper = new SimpleTaskRetryLooper(STARTUP_LOOP_TICK, STARTUP_LOOP_MAX_RETRIES);
try {
listenerRegistration = looper.loopUntilNoException(new Callable<ListenerRegistration<DataTreeChangeListener>>() {
@Override
public ListenerRegistration<DataTreeChangeListener> call() throws Exception {
return dataBroker.registerDataTreeChangeListener(identifier, DataTreeChangeListenerImpl.this);
}
});
} catch (Exception e) {
LOG.error("Data listener registration failed!");
throw new IllegalStateException("TopologyManager startup fail! TM bundle needs restart.", e);
}
this.operationProcessor = operationProcessor;
}
@Override
public void close() throws Exception {
listenerRegistration.close();
}
protected <T extends DataObject> void sendToTransactionChain(final T node, final InstanceIdentifier<T> iiToTopologyNode) {
operationProcessor.enqueueOperation(new TopologyOperation() {
@Override
public void applyOperation(ReadWriteTransaction transaction) {
transaction.merge(LogicalDatastoreType.OPERATIONAL, iiToTopologyNode, node, true);
}
});
}
protected InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node> provideIIToTopologyNode(
final NodeId nodeIdInTopology) {
org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey nodeKeyInTopology = new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey(
nodeIdInTopology);
return II_TO_TOPOLOGY
.builder()
.child(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class,
nodeKeyInTopology).build();
}
protected NodeId provideTopologyNodeId(InstanceIdentifier<T> iiToNodeInInventory) {
final NodeKey inventoryNodeKey = iiToNodeInInventory.firstKeyOf(Node.class, NodeKey.class);
if (inventoryNodeKey != null) {
return new NodeId(inventoryNodeKey.getId().getValue());
}
return null;
}
}