1 package org.opendaylight.md.controller.topology.lldp;
5 import java.util.Timer;
6 import java.util.Map.Entry;
7 import java.util.TimerTask;
8 import java.util.concurrent.ConcurrentHashMap;
10 import org.opendaylight.md.controller.topology.lldp.utils.LLDPDiscoveryUtils;
11 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkDiscovered;
12 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkRemovedBuilder;
15 public class LLDPLinkAger {
16 private static final LLDPLinkAger instance = new LLDPLinkAger();
17 private Map<LinkDiscovered,Date> linkToDate = new ConcurrentHashMap<LinkDiscovered,Date>();
18 private LLDPDiscoveryProvider manager;
19 private Timer timer = new Timer();
21 public LLDPDiscoveryProvider getManager() {
24 public void setManager(LLDPDiscoveryProvider manager) {
25 this.manager = manager;
27 private LLDPLinkAger() {
28 timer.schedule(new LLDPAgingTask(), 0,LLDPDiscoveryUtils.LLDP_INTERVAL);
30 public static LLDPLinkAger getInstance() {
34 public void put(LinkDiscovered link) {
35 Date expires = new Date();
36 expires.setTime(expires.getTime() + LLDPDiscoveryUtils.LLDP_EXPIRATION_TIME);
37 linkToDate.put(link, expires);
44 private class LLDPAgingTask extends TimerTask {
48 for (Entry<LinkDiscovered,Date> entry : linkToDate.entrySet()) {
49 LinkDiscovered link = entry.getKey();
50 Date expires = entry.getValue();
51 Date now = new Date();
52 if(now.after(expires)) {
53 if(getInstance().getManager() != null) {
54 LinkRemovedBuilder lrb = new LinkRemovedBuilder(link);
55 getInstance().getManager().getNotificationService().publish(lrb.build());
56 linkToDate.remove(link);