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.apache.aries.blueprint.annotation.service.Reference;
13 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
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.PacketProcessingListener;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketReceived;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
27 public class LLDPDiscoveryListener implements PacketProcessingListener {
28 private static final Logger LOG = LoggerFactory.getLogger(LLDPDiscoveryListener.class);
30 private final LLDPLinkAger lldpLinkAger;
31 private final NotificationProviderService notificationService;
32 private final EntityOwnershipService eos;
35 public LLDPDiscoveryListener(@Reference final NotificationProviderService notificationService,
36 final LLDPLinkAger lldpLinkAger, @Reference final EntityOwnershipService entityOwnershipService) {
37 this.notificationService = notificationService;
38 this.lldpLinkAger = lldpLinkAger;
39 this.eos = entityOwnershipService;
43 public void onPacketReceived(PacketReceived lldp) {
44 NodeConnectorRef src = LLDPDiscoveryUtils.lldpToNodeConnectorRef(lldp.getPayload(), true);
46 final NodeKey nodeKey = lldp.getIngress().getValue().firstKeyOf(Node.class);
47 LOG.debug("LLDP packet received for destination node {}", nodeKey);
48 if (nodeKey != null) {
49 LinkDiscoveredBuilder ldb = new LinkDiscoveredBuilder();
50 ldb.setDestination(lldp.getIngress());
51 ldb.setSource(new NodeConnectorRef(src));
52 LinkDiscovered ld = ldb.build();
55 if (LLDPDiscoveryUtils.isEntityOwned(this.eos, nodeKey.getId().getValue())) {
56 LOG.debug("Publish add event for link {}", ld);
57 notificationService.publish(ld);
59 LOG.trace("Skip publishing the add event for link because controller is non-owner of the "
60 + "node {}. Link : {}", nodeKey.getId().getValue(), ld);
63 LOG.debug("LLDP packet ignored. Unable to extract node-key from packet-in ingress.");