2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.openflowplugin.applications.topology.manager;
10 import java.util.concurrent.ExecutionException;
12 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
13 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
14 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
15 import org.opendaylight.controller.sal.binding.api.AbstractBindingAwareProvider;
16 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.ProviderContext;
17 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
18 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
19 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
20 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
22 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
23 import org.opendaylight.yangtools.concepts.ListenerRegistration;
24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
25 import org.opendaylight.yangtools.yang.binding.NotificationListener;
26 import org.osgi.framework.BundleContext;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
30 public class FlowCapableTopologyProvider extends AbstractBindingAwareProvider implements AutoCloseable {
31 private final static Logger LOG = LoggerFactory.getLogger(FlowCapableTopologyProvider.class);
32 private ListenerRegistration<NotificationListener> listenerRegistration;
33 private Thread thread;
34 private LinkChangeListenerImpl linkChangeListener;
35 private NodeChangeListenerImpl nodeChangeListener;
38 * Gets called on start of a bundle.
43 public synchronized void onSessionInitiated(final ProviderContext session) {
44 final DataBroker dataBroker = session.getSALService(DataBroker.class);
45 final NotificationProviderService notificationService = session.getSALService(NotificationProviderService.class);
47 final String name = "flow:1";
48 final TopologyKey key = new TopologyKey(new TopologyId(name));
49 final InstanceIdentifier<Topology> path = InstanceIdentifier
50 .create(NetworkTopology.class)
51 .child(Topology.class, key);
53 final OperationProcessor processor = new OperationProcessor(dataBroker);
54 final FlowCapableTopologyExporter listener = new FlowCapableTopologyExporter(processor, path);
55 this.listenerRegistration = notificationService.registerNotificationListener(listener);
56 linkChangeListener = new LinkChangeListenerImpl(dataBroker);
57 nodeChangeListener = new NodeChangeListenerImpl(dataBroker);
59 final ReadWriteTransaction tx = dataBroker.newReadWriteTransaction();
60 tx.put(LogicalDatastoreType.OPERATIONAL, path, new TopologyBuilder().setKey(key).build(), true);
63 } catch (InterruptedException | ExecutionException e) {
64 LOG.warn("Initial topology export failed, continuing anyway", e);
67 thread = new Thread(processor);
68 thread.setDaemon(true);
69 thread.setName("FlowCapableTopologyExporter-" + name);
74 public synchronized void close() throws InterruptedException {
75 LOG.info("FlowCapableTopologyProvider stopped.");
76 if (this.listenerRegistration != null) {
78 this.listenerRegistration.close();
79 } catch (Exception e) {
80 LOG.error("Failed to close listener registration", e);
82 listenerRegistration = null;
84 unregisterListener(linkChangeListener);
85 unregisterListener(nodeChangeListener);
93 private void unregisterListener(final AutoCloseable listenerToClose) {
94 if (listenerToClose != null) {
96 listenerToClose.close();
97 } catch (Exception e) {
98 LOG.error("Failed to close listener registration", e);
104 * Gets called during stop bundle
106 * @param context The execution context of the bundle being stopped.
109 public void stopImpl(final BundleContext context) {
112 } catch (InterruptedException e) {
113 LOG.error("Failed to stop provider", e);