2 * Copyright (c) 2014 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.lldp;
10 import javax.inject.Inject;
11 import javax.inject.Singleton;
12 import org.opendaylight.mdsal.binding.api.NotificationPublishService;
13 import org.opendaylight.mdsal.binding.api.NotificationService.Listener;
14 import org.opendaylight.mdsal.eos.binding.api.EntityOwnershipService;
15 import org.opendaylight.openflowplugin.applications.topology.lldp.utils.LLDPDiscoveryUtils;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkDiscovered;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkDiscoveredBuilder;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketReceived;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
26 public class LLDPDiscoveryListener implements Listener<PacketReceived> {
27 private static final Logger LOG = LoggerFactory.getLogger(LLDPDiscoveryListener.class);
29 private final LLDPLinkAger lldpLinkAger;
30 private final NotificationPublishService notificationService;
31 private final EntityOwnershipService eos;
34 public LLDPDiscoveryListener(final NotificationPublishService notificationService,
35 final LLDPLinkAger lldpLinkAger, final EntityOwnershipService entityOwnershipService) {
36 this.notificationService = notificationService;
37 this.lldpLinkAger = lldpLinkAger;
38 eos = entityOwnershipService;
42 public void onNotification(final PacketReceived lldp) {
43 NodeConnectorRef src = LLDPDiscoveryUtils.lldpToNodeConnectorRef(lldp.getPayload(), true);
45 final NodeKey nodeKey = lldp.getIngress().getValue().firstKeyOf(Node.class);
46 LOG.debug("LLDP packet received for destination node {}", nodeKey);
47 if (nodeKey != null) {
48 final LinkDiscoveredBuilder ldb = new LinkDiscoveredBuilder();
49 ldb.setDestination(lldp.getIngress());
50 ldb.setSource(new NodeConnectorRef(src));
51 final LinkDiscovered ld = ldb.build();
52 final boolean linkWasPresent = lldpLinkAger.isLinkPresent(ld);
54 if (LLDPDiscoveryUtils.isEntityOwned(eos, nodeKey.getId().getValue())) {
56 LOG.trace("Link {} already present in the cache, skip publishing the notification.", ld);
58 LOG.debug("Publish add event for link {}", ld);
60 notificationService.putNotification(ld);
61 } catch (InterruptedException e) {
62 LOG.warn("Interrupted while publishing notification {}", ld, e);
66 LOG.trace("Skip publishing the add event for link because controller is non-owner of the "
67 + "node {}. Link : {}", nodeKey.getId().getValue(), ld);
70 LOG.debug("LLDP packet ignored. Unable to extract node-key from packet-in ingress.");