*/
package org.opendaylight.openflowplugin.applications.topology.lldp;
+import com.google.common.annotations.VisibleForTesting;
+import java.util.Collection;
import java.util.Date;
-import java.util.Map;
-import java.util.Timer;
import java.util.Map.Entry;
+import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.ConcurrentHashMap;
-
+import java.util.concurrent.ConcurrentMap;
+import javax.annotation.PreDestroy;
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.mdsal.binding.api.ClusteredDataTreeChangeListener;
+import org.opendaylight.mdsal.binding.api.DataBroker;
+import org.opendaylight.mdsal.binding.api.DataObjectModification;
+import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
+import org.opendaylight.mdsal.binding.api.DataTreeModification;
+import org.opendaylight.mdsal.binding.api.NotificationPublishService;
+import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
+import org.opendaylight.mdsal.eos.binding.api.EntityOwnershipService;
+import org.opendaylight.openflowplugin.api.openflow.configuration.ConfigurationListener;
+import org.opendaylight.openflowplugin.api.openflow.configuration.ConfigurationService;
import org.opendaylight.openflowplugin.applications.topology.lldp.utils.LLDPDiscoveryUtils;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkDiscovered;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkRemoved;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkRemovedBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.lldp.discovery.config.rev160511.TopologyLldpDiscoveryConfig;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+@Singleton
+public final class LLDPLinkAger implements ConfigurationListener, ClusteredDataTreeChangeListener<Link>, AutoCloseable {
+ private static final Logger LOG = LoggerFactory.getLogger(LLDPLinkAger.class);
+ static final String TOPOLOGY_ID = "flow:1";
+ static final InstanceIdentifier<Link> II_TO_LINK = InstanceIdentifier.create(NetworkTopology.class)
+ .child(Topology.class, new TopologyKey(new TopologyId(TOPOLOGY_ID))).child(Link.class);
-public class LLDPLinkAger {
- private static final LLDPLinkAger instance = new LLDPLinkAger();
- private Map<LinkDiscovered,Date> linkToDate = new ConcurrentHashMap<LinkDiscovered,Date>();
- private LLDPDiscoveryProvider manager;
- private Timer timer = new Timer();
+ private final long linkExpirationTime;
+ // FIXME: use Instant instead of Date
+ private final ConcurrentMap<LinkDiscovered, Date> linkToDate = new ConcurrentHashMap<>();
+ private final Timer timer = new Timer();
+ private final NotificationPublishService notificationService;
+ private final AutoCloseable configurationServiceRegistration;
+ private final EntityOwnershipService eos;
+ private ListenerRegistration<?> listenerRegistration;
- public LLDPDiscoveryProvider getManager() {
- return manager;
- }
- public void setManager(LLDPDiscoveryProvider manager) {
- this.manager = manager;
- }
- private LLDPLinkAger() {
- timer.schedule(new LLDPAgingTask(), 0,LLDPDiscoveryUtils.LLDP_INTERVAL);
- }
- public static LLDPLinkAger getInstance() {
- return instance;
+ /**
+ * default ctor - start timer.
+ */
+ @Inject
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ public LLDPLinkAger(final TopologyLldpDiscoveryConfig topologyLldpDiscoveryConfig,
+ final NotificationPublishService notificationService,
+ final ConfigurationService configurationService,
+ final EntityOwnershipService entityOwnershipService,
+ final DataBroker dataBroker) {
+ linkExpirationTime = topologyLldpDiscoveryConfig.getTopologyLldpExpirationInterval().getValue().toJava();
+ this.notificationService = notificationService;
+ configurationServiceRegistration = configurationService.registerListener(this);
+ eos = entityOwnershipService;
+ final DataTreeIdentifier<Link> dtiToNodeConnector = DataTreeIdentifier.create(LogicalDatastoreType.OPERATIONAL,
+ II_TO_LINK);
+ try {
+ listenerRegistration = dataBroker.registerDataTreeChangeListener(dtiToNodeConnector, LLDPLinkAger.this);
+ } catch (Exception e) {
+ LOG.error("DataTreeChangeListeners registration failed:", e);
+ throw new IllegalStateException("LLDPLinkAger startup failed!", e);
+ }
+ timer.schedule(new LLDPAgingTask(), 0,
+ topologyLldpDiscoveryConfig.getTopologyLldpInterval().getValue().toJava());
}
public void put(LinkDiscovered link) {
Date expires = new Date();
- expires.setTime(expires.getTime() + LLDPDiscoveryUtils.LLDP_EXPIRATION_TIME);
+ expires.setTime(expires.getTime() + linkExpirationTime);
linkToDate.put(link, expires);
}
- public void close() {
+ @Override
+ @PreDestroy
+ public void close() throws Exception {
+ if (listenerRegistration != null) {
+ listenerRegistration.close();
+ listenerRegistration = null;
+ }
timer.cancel();
+ linkToDate.clear();
+ configurationServiceRegistration.close();
}
- private class LLDPAgingTask extends TimerTask {
+ @Override
+ public void onDataTreeChanged(@NonNull Collection<DataTreeModification<Link>> changes) {
+ for (DataTreeModification<Link> modification : changes) {
+ switch (modification.getRootNode().getModificationType()) {
+ case WRITE:
+ break;
+ case SUBTREE_MODIFIED:
+ // NOOP
+ break;
+ case DELETE:
+ processLinkDeleted(modification.getRootNode());
+ break;
+ default:
+ LOG.error("Unhandled modification type: {}", modification.getRootNode().getModificationType());
+ }
+ }
+ }
+
+ @VisibleForTesting
+ public boolean isLinkToDateEmpty() {
+ return linkToDate.isEmpty();
+ }
+
+ @Override
+ public void onPropertyChanged(@NonNull final String propertyName, @NonNull final String propertyValue) {
+ final TopologyLLDPDiscoveryProperty lldpDiscoveryProperty = TopologyLLDPDiscoveryProperty.forValue(
+ propertyName);
+ if (lldpDiscoveryProperty != null) {
+ switch (lldpDiscoveryProperty) {
+ case LLDP_SECURE_KEY:
+ case TOPOLOGY_LLDP_INTERVAL:
+ case TOPOLOGY_LLDP_EXPIRATION_INTERVAL:
+ LOG.warn("Runtime update not supported for property {}", lldpDiscoveryProperty);
+ break;
+ default:
+ LOG.warn("No topology lldp discovery property found.");
+ break;
+ }
+ }
+ }
+
+ protected boolean isLinkPresent(final LinkDiscovered linkDiscovered) {
+ return linkToDate.containsKey(linkDiscovered);
+ }
+ private void processLinkDeleted(DataObjectModification<Link> rootNode) {
+ Link link = rootNode.getDataBefore();
+ LOG.trace("Removing link {} from linkToDate cache", link);
+ LinkDiscovered linkDiscovered = LLDPDiscoveryUtils.toLLDPLinkDiscovered(link);
+ linkToDate.remove(linkDiscovered);
+ }
+
+ private class LLDPAgingTask extends TimerTask {
@Override
public void run() {
- for (Entry<LinkDiscovered,Date> entry : linkToDate.entrySet()) {
+ for (Entry<LinkDiscovered, Date> entry : linkToDate.entrySet()) {
LinkDiscovered link = entry.getKey();
Date expires = entry.getValue();
Date now = new Date();
- if(now.after(expires)) {
- if(getInstance().getManager() != null) {
+ if (now.after(expires)) {
+ if (notificationService != null) {
LinkRemovedBuilder lrb = new LinkRemovedBuilder(link);
- getInstance().getManager().getNotificationService().publish(lrb.build());
+ NodeKey nodeKey = link.getDestination().getValue().firstKeyOf(Node.class);
+ LOG.info("No update received for link {} from last {} milliseconds. Removing link from cache.",
+ link, linkExpirationTime);
linkToDate.remove(link);
+ if (nodeKey != null && LLDPDiscoveryUtils.isEntityOwned(eos, nodeKey.getId().getValue())) {
+ LOG.info("Publish Link Remove event for the link {}", link);
+ final LinkRemoved lr = lrb.build();
+ try {
+ notificationService.putNotification(lr);
+ } catch (InterruptedException e) {
+ LOG.warn("Interrupted while publishing notification {}", lr, e);
+ }
+ } else {
+ LOG.trace("Skip publishing Link Remove event for the link {} because link destination "
+ + "node is not owned by the controller", link);
+ }
}
}
}
-
}
-
}
}
-
Code Review / openflowplugin.git / blobdiff