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 com.google.common.base.Optional;
11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
12 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
13 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
14 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
15 import org.opendaylight.openflowplugin.common.txchain.TransactionChainManager;
16 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
17 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
18 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
19 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
20 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
21 import org.opendaylight.yangtools.concepts.ListenerRegistration;
22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
23 import org.opendaylight.yangtools.yang.binding.NotificationListener;
24 import org.slf4j.Logger;
25 import org.slf4j.LoggerFactory;
27 public class FlowCapableTopologyProvider implements AutoCloseable {
28 private static final Logger LOG = LoggerFactory.getLogger(FlowCapableTopologyProvider.class);
29 private static final String TOPOLOGY_PROVIDER = "topology-provider";
30 static final String TOPOLOGY_ID = "flow:1";
33 private final DataBroker dataBroker;
34 private final NotificationProviderService notificationService;
35 private final OperationProcessor processor;
36 private TransactionChainManager transactionChainManager;
37 private ListenerRegistration<NotificationListener> listenerRegistration;
39 public FlowCapableTopologyProvider(DataBroker dataBroker, NotificationProviderService notificationService,
40 OperationProcessor processor) {
41 this.dataBroker = dataBroker;
42 this.notificationService = notificationService;
43 this.processor = processor;
47 * Gets called on start of a bundle.
50 final TopologyKey key = new TopologyKey(new TopologyId(TOPOLOGY_ID));
51 final InstanceIdentifier<Topology> path = InstanceIdentifier
52 .create(NetworkTopology.class)
53 .child(Topology.class, key);
55 final FlowCapableTopologyExporter listener = new FlowCapableTopologyExporter(processor, path);
56 this.listenerRegistration = notificationService.registerNotificationListener(listener);
57 this.transactionChainManager = new TransactionChainManager(dataBroker, TOPOLOGY_PROVIDER);
58 this.transactionChainManager.activateTransactionManager();
59 this.transactionChainManager.initialSubmitWriteTransaction();
61 if(!isFlowTopologyExist(path)){
62 transactionChainManager.writeToTransaction(
63 LogicalDatastoreType.OPERATIONAL,
65 new TopologyBuilder().setKey(key).build(),
67 transactionChainManager.submitTransaction();
70 LOG.info("FlowCapableTopologyProvider started");
75 LOG.info("FlowCapableTopologyProvider stopped.");
76 this.transactionChainManager.close();
77 if (this.listenerRegistration != null) {
79 this.listenerRegistration.close();
80 } catch (Exception e) {
81 LOG.warn("Failed to close listener registration: {}", e.getMessage());
82 LOG.debug("Failed to close listener registration.. ", e);
84 listenerRegistration = null;
88 private boolean isFlowTopologyExist(final InstanceIdentifier<Topology> path) {
90 Optional<Topology> ofTopology = this.transactionChainManager
91 .readFromTransaction(LogicalDatastoreType.OPERATIONAL, path)
93 LOG.debug("OpenFlow topology exist in the operational data store at {}",path);
94 if(ofTopology.isPresent()){
97 } catch (ReadFailedException e) {
98 LOG.warn("OpenFlow topology read operation failed!", e);