| /* |
| * Copyright 2015-present Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.provider.lldp.impl; |
| |
| import java.util.Dictionary; |
| import java.util.EnumSet; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Properties; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.ScheduledExecutorService; |
| |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Modified; |
| import org.apache.felix.scr.annotations.Property; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.onlab.packet.Ethernet; |
| import org.onosproject.cfg.ComponentConfigService; |
| import org.onosproject.cluster.ClusterMetadataService; |
| import org.onosproject.cluster.ClusterService; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.mastership.MastershipEvent; |
| import org.onosproject.mastership.MastershipListener; |
| import org.onosproject.mastership.MastershipService; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.Device; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.LinkKey; |
| import org.onosproject.net.Port; |
| import org.onosproject.net.config.ConfigFactory; |
| import org.onosproject.net.config.NetworkConfigEvent; |
| import org.onosproject.net.config.NetworkConfigListener; |
| import org.onosproject.net.config.NetworkConfigRegistry; |
| import org.onosproject.net.device.DeviceEvent; |
| import org.onosproject.net.device.DeviceEvent.Type; |
| import org.onosproject.net.device.DeviceListener; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.flow.DefaultTrafficSelector; |
| import org.onosproject.net.flow.TrafficSelector; |
| import org.onosproject.net.link.DefaultLinkDescription; |
| import org.onosproject.net.link.LinkProviderRegistry; |
| import org.onosproject.net.link.LinkProviderService; |
| import org.onosproject.net.link.LinkService; |
| import org.onosproject.net.link.ProbedLinkProvider; |
| import org.onosproject.net.packet.PacketContext; |
| import org.onosproject.net.packet.PacketPriority; |
| import org.onosproject.net.packet.PacketProcessor; |
| import org.onosproject.net.packet.PacketService; |
| import org.onosproject.net.provider.AbstractProvider; |
| import org.onosproject.net.provider.ProviderId; |
| import org.onosproject.provider.lldpcommon.LinkDiscovery; |
| import org.onosproject.provider.lldpcommon.LinkDiscoveryContext; |
| import org.osgi.service.component.ComponentContext; |
| import org.slf4j.Logger; |
| |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Maps; |
| |
| import static com.google.common.base.Strings.isNullOrEmpty; |
| import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor; |
| import static java.util.concurrent.TimeUnit.SECONDS; |
| import static org.onlab.packet.Ethernet.TYPE_BSN; |
| import static org.onlab.packet.Ethernet.TYPE_LLDP; |
| import static org.onlab.util.Tools.get; |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.onosproject.net.Link.Type.DIRECT; |
| import static org.onosproject.net.config.basics.SubjectFactories.APP_SUBJECT_FACTORY; |
| import static org.onosproject.net.config.basics.SubjectFactories.CONNECT_POINT_SUBJECT_FACTORY; |
| import static org.onosproject.net.config.basics.SubjectFactories.DEVICE_SUBJECT_FACTORY; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Provider which uses LLDP and BDDP packets to detect network infrastructure links. |
| */ |
| @Component(immediate = true) |
| public class LldpLinkProvider extends AbstractProvider implements ProbedLinkProvider { |
| |
| private static final String PROVIDER_NAME = "org.onosproject.provider.lldp"; |
| |
| private static final String FORMAT = |
| "Settings: enabled={}, useBDDP={}, probeRate={}, " + |
| "staleLinkAge={}"; |
| |
| // When a Device/Port has this annotation, do not send out LLDP/BDDP |
| public static final String NO_LLDP = "no-lldp"; |
| |
| private static final int MAX_RETRIES = 5; |
| private static final int RETRY_DELAY = 1_000; // millis |
| |
| private final Logger log = getLogger(getClass()); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected LinkProviderRegistry providerRegistry; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected LinkService linkService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PacketService packetService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected MastershipService masterService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ComponentConfigService cfgService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ClusterService clusterService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected NetworkConfigRegistry cfgRegistry; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ClusterMetadataService clusterMetadataService; |
| |
| private LinkProviderService providerService; |
| |
| private ScheduledExecutorService executor; |
| protected ExecutorService eventExecutor; |
| |
| private boolean shuttingDown = false; |
| |
| // TODO: Add sanity checking for the configurable params based on the delays |
| private static final long DEVICE_SYNC_DELAY = 5; |
| private static final long LINK_PRUNER_DELAY = 3; |
| |
| private static final String PROP_ENABLED = "enabled"; |
| @Property(name = PROP_ENABLED, boolValue = true, |
| label = "If false, link discovery is disabled") |
| private boolean enabled = false; |
| |
| private static final String PROP_USE_BDDP = "useBDDP"; |
| @Property(name = PROP_USE_BDDP, boolValue = true, |
| label = "Use BDDP for link discovery") |
| private boolean useBddp = true; |
| |
| private static final String PROP_PROBE_RATE = "probeRate"; |
| private static final int DEFAULT_PROBE_RATE = 3000; |
| @Property(name = PROP_PROBE_RATE, intValue = DEFAULT_PROBE_RATE, |
| label = "LLDP and BDDP probe rate specified in millis") |
| private int probeRate = DEFAULT_PROBE_RATE; |
| |
| private static final String PROP_STALE_LINK_AGE = "staleLinkAge"; |
| private static final int DEFAULT_STALE_LINK_AGE = 10000; |
| @Property(name = PROP_STALE_LINK_AGE, intValue = DEFAULT_STALE_LINK_AGE, |
| label = "Number of millis beyond which links will be considered stale") |
| private int staleLinkAge = DEFAULT_STALE_LINK_AGE; |
| |
| private final LinkDiscoveryContext context = new InternalDiscoveryContext(); |
| private final InternalRoleListener roleListener = new InternalRoleListener(); |
| private final InternalDeviceListener deviceListener = new InternalDeviceListener(); |
| private final InternalPacketProcessor packetProcessor = new InternalPacketProcessor(); |
| |
| // Device link discovery helpers. |
| protected final Map<DeviceId, LinkDiscovery> discoverers = new ConcurrentHashMap<>(); |
| |
| // Most recent time a tracked link was seen; links are tracked if their |
| // destination connection point is mastered by this controller instance. |
| private final Map<LinkKey, Long> linkTimes = Maps.newConcurrentMap(); |
| |
| private ApplicationId appId; |
| |
| static final SuppressionRules DEFAULT_RULES |
| = new SuppressionRules(EnumSet.of(Device.Type.ROADM, Device.Type.FIBER_SWITCH, Device.Type.OTN), |
| ImmutableMap.of(NO_LLDP, SuppressionRules.ANY_VALUE)); |
| |
| private SuppressionRules rules = LldpLinkProvider.DEFAULT_RULES; |
| |
| public static final String CONFIG_KEY = "suppression"; |
| public static final String FEATURE_NAME = "linkDiscovery"; |
| |
| private final Set<ConfigFactory<?, ?>> factories = ImmutableSet.of( |
| new ConfigFactory<ApplicationId, SuppressionConfig>(APP_SUBJECT_FACTORY, |
| SuppressionConfig.class, |
| CONFIG_KEY) { |
| @Override |
| public SuppressionConfig createConfig() { |
| return new SuppressionConfig(); |
| } |
| }, |
| new ConfigFactory<DeviceId, LinkDiscoveryFromDevice>(DEVICE_SUBJECT_FACTORY, |
| LinkDiscoveryFromDevice.class, FEATURE_NAME) { |
| @Override |
| public LinkDiscoveryFromDevice createConfig() { |
| return new LinkDiscoveryFromDevice(); |
| } |
| }, |
| new ConfigFactory<ConnectPoint, LinkDiscoveryFromPort>(CONNECT_POINT_SUBJECT_FACTORY, |
| LinkDiscoveryFromPort.class, FEATURE_NAME) { |
| @Override |
| public LinkDiscoveryFromPort createConfig() { |
| return new LinkDiscoveryFromPort(); |
| } |
| } |
| ); |
| |
| private final InternalConfigListener cfgListener = new InternalConfigListener(); |
| |
| /** |
| * Creates an OpenFlow link provider. |
| */ |
| public LldpLinkProvider() { |
| super(new ProviderId("lldp", PROVIDER_NAME)); |
| } |
| |
| private final String buildSrcMac() { |
| String srcMac = ProbedLinkProvider.fingerprintMac(clusterMetadataService.getClusterMetadata()); |
| String defMac = ProbedLinkProvider.defaultMac(); |
| if (srcMac.equals(defMac)) { |
| log.warn("Couldn't generate fingerprint. Using default value {}", defMac); |
| return defMac; |
| } |
| log.trace("Generated MAC address {}", srcMac); |
| return srcMac; |
| } |
| |
| @Activate |
| public void activate(ComponentContext context) { |
| eventExecutor = newSingleThreadScheduledExecutor(groupedThreads("onos/linkevents", "events-%d", log)); |
| shuttingDown = false; |
| cfgService.registerProperties(getClass()); |
| appId = coreService.registerApplication(PROVIDER_NAME); |
| |
| cfgRegistry.addListener(cfgListener); |
| factories.forEach(cfgRegistry::registerConfigFactory); |
| |
| SuppressionConfig cfg = cfgRegistry.getConfig(appId, SuppressionConfig.class); |
| if (cfg == null) { |
| // If no configuration is found, register default. |
| cfg = this.setDefaultSuppressionConfig(); |
| } |
| cfgListener.reconfigureSuppressionRules(cfg); |
| |
| modified(context); |
| log.info("Started"); |
| } |
| |
| private SuppressionConfig setDefaultSuppressionConfig() { |
| SuppressionConfig cfg = cfgRegistry.addConfig(appId, SuppressionConfig.class); |
| cfg.deviceTypes(DEFAULT_RULES.getSuppressedDeviceType()) |
| .annotation(DEFAULT_RULES.getSuppressedAnnotation()) |
| .apply(); |
| return cfg; |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| shuttingDown = true; |
| cfgRegistry.removeListener(cfgListener); |
| factories.forEach(cfgRegistry::unregisterConfigFactory); |
| |
| cfgService.unregisterProperties(getClass(), false); |
| disable(); |
| eventExecutor.shutdownNow(); |
| eventExecutor = null; |
| log.info("Stopped"); |
| } |
| |
| @Modified |
| public void modified(ComponentContext context) { |
| Dictionary<?, ?> properties = context != null ? context.getProperties() : new Properties(); |
| |
| boolean newEnabled, newUseBddp; |
| int newProbeRate, newStaleLinkAge; |
| try { |
| String s = get(properties, PROP_ENABLED); |
| newEnabled = isNullOrEmpty(s) || Boolean.parseBoolean(s.trim()); |
| |
| s = get(properties, PROP_USE_BDDP); |
| newUseBddp = isNullOrEmpty(s) || Boolean.parseBoolean(s.trim()); |
| |
| s = get(properties, PROP_PROBE_RATE); |
| newProbeRate = isNullOrEmpty(s) ? probeRate : Integer.parseInt(s.trim()); |
| |
| s = get(properties, PROP_STALE_LINK_AGE); |
| newStaleLinkAge = isNullOrEmpty(s) ? staleLinkAge : Integer.parseInt(s.trim()); |
| |
| } catch (NumberFormatException e) { |
| log.warn("Component configuration had invalid values", e); |
| newEnabled = enabled; |
| newUseBddp = useBddp; |
| newProbeRate = probeRate; |
| newStaleLinkAge = staleLinkAge; |
| } |
| |
| boolean wasEnabled = enabled; |
| |
| enabled = newEnabled; |
| useBddp = newUseBddp; |
| probeRate = newProbeRate; |
| staleLinkAge = newStaleLinkAge; |
| |
| if (!wasEnabled && enabled) { |
| enable(); |
| } else if (wasEnabled && !enabled) { |
| disable(); |
| } else { |
| if (enabled) { |
| // update all discovery helper state |
| loadDevices(); |
| } |
| } |
| |
| log.info(FORMAT, enabled, useBddp, probeRate, staleLinkAge); |
| } |
| |
| /** |
| * Enables link discovery processing. |
| */ |
| private void enable() { |
| providerService = providerRegistry.register(this); |
| masterService.addListener(roleListener); |
| deviceService.addListener(deviceListener); |
| packetService.addProcessor(packetProcessor, PacketProcessor.advisor(0)); |
| |
| loadDevices(); |
| |
| executor = newSingleThreadScheduledExecutor(groupedThreads("onos/link", "discovery-%d", log)); |
| executor.scheduleAtFixedRate(new SyncDeviceInfoTask(), |
| DEVICE_SYNC_DELAY, DEVICE_SYNC_DELAY, SECONDS); |
| executor.scheduleAtFixedRate(new LinkPrunerTask(), |
| LINK_PRUNER_DELAY, LINK_PRUNER_DELAY, SECONDS); |
| |
| requestIntercepts(); |
| } |
| |
| /** |
| * Disables link discovery processing. |
| */ |
| private void disable() { |
| withdrawIntercepts(); |
| |
| providerRegistry.unregister(this); |
| masterService.removeListener(roleListener); |
| deviceService.removeListener(deviceListener); |
| packetService.removeProcessor(packetProcessor); |
| |
| if (executor != null) { |
| executor.shutdownNow(); |
| } |
| discoverers.values().forEach(LinkDiscovery::stop); |
| discoverers.clear(); |
| |
| providerService = null; |
| } |
| |
| /** |
| * Loads available devices and registers their ports to be probed. |
| */ |
| private void loadDevices() { |
| if (!enabled) { |
| return; |
| } |
| deviceService.getAvailableDevices() |
| .forEach(d -> updateDevice(d) |
| .ifPresent(ld -> updatePorts(ld, d.id()))); |
| } |
| |
| private boolean isBlacklisted(DeviceId did) { |
| LinkDiscoveryFromDevice cfg = cfgRegistry.getConfig(did, LinkDiscoveryFromDevice.class); |
| if (cfg == null) { |
| return false; |
| } |
| return !cfg.enabled(); |
| } |
| |
| private boolean isBlacklisted(ConnectPoint cp) { |
| // if parent device is blacklisted, so is the port |
| if (isBlacklisted(cp.deviceId())) { |
| return true; |
| } |
| LinkDiscoveryFromPort cfg = cfgRegistry.getConfig(cp, LinkDiscoveryFromPort.class); |
| if (cfg == null) { |
| return false; |
| } |
| return !cfg.enabled(); |
| } |
| |
| private boolean isBlacklisted(Port port) { |
| return isBlacklisted(new ConnectPoint(port.element().id(), port.number())); |
| } |
| |
| /** |
| * Updates discovery helper for specified device. |
| * |
| * Adds and starts a discovery helper for specified device if enabled, |
| * calls {@link #removeDevice(DeviceId)} otherwise. |
| * |
| * @param device device to add |
| * @return discovery helper if discovery is enabled for the device |
| */ |
| private Optional<LinkDiscovery> updateDevice(Device device) { |
| if (device == null) { |
| return Optional.empty(); |
| } |
| if (rules.isSuppressed(device) || isBlacklisted(device.id())) { |
| log.trace("LinkDiscovery from {} disabled by configuration", device.id()); |
| removeDevice(device.id()); |
| return Optional.empty(); |
| } |
| |
| LinkDiscovery ld = discoverers.computeIfAbsent(device.id(), |
| did -> new LinkDiscovery(device, context)); |
| if (ld.isStopped()) { |
| ld.start(); |
| } |
| return Optional.of(ld); |
| } |
| |
| /** |
| * Removes after stopping discovery helper for specified device. |
| * @param deviceId device to remove |
| */ |
| private void removeDevice(final DeviceId deviceId) { |
| discoverers.computeIfPresent(deviceId, (did, ld) -> { |
| ld.stop(); |
| return null; |
| }); |
| |
| } |
| |
| /** |
| * Updates ports of the specified device to the specified discovery helper. |
| */ |
| private void updatePorts(LinkDiscovery discoverer, DeviceId deviceId) { |
| deviceService.getPorts(deviceId).forEach(p -> updatePort(discoverer, p)); |
| } |
| |
| /** |
| * Updates discovery helper state of the specified port. |
| * |
| * Adds a port to the discovery helper if up and discovery is enabled, |
| * or calls {@link #removePort(Port)} otherwise. |
| */ |
| private void updatePort(LinkDiscovery discoverer, Port port) { |
| if (port == null) { |
| return; |
| } |
| if (port.number().isLogical()) { |
| // silently ignore logical ports |
| return; |
| } |
| |
| if (rules.isSuppressed(port) || isBlacklisted(port)) { |
| log.trace("LinkDiscovery from {} disabled by configuration", port); |
| removePort(port); |
| return; |
| } |
| |
| // check if enabled and turn off discovery? |
| if (!port.isEnabled()) { |
| removePort(port); |
| return; |
| } |
| |
| discoverer.addPort(port); |
| } |
| |
| /** |
| * Removes a port from the specified discovery helper. |
| * @param port the port |
| */ |
| private void removePort(Port port) { |
| if (port.element() instanceof Device) { |
| Device d = (Device) port.element(); |
| LinkDiscovery ld = discoverers.get(d.id()); |
| if (ld != null) { |
| ld.removePort(port.number()); |
| } |
| } else { |
| log.warn("Attempted to remove non-Device port", port); |
| } |
| } |
| |
| /** |
| * Requests packet intercepts. |
| */ |
| private void requestIntercepts() { |
| TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); |
| selector.matchEthType(TYPE_LLDP); |
| packetService.requestPackets(selector.build(), PacketPriority.CONTROL, appId); |
| |
| selector.matchEthType(TYPE_BSN); |
| if (useBddp) { |
| packetService.requestPackets(selector.build(), PacketPriority.CONTROL, appId); |
| } else { |
| packetService.cancelPackets(selector.build(), PacketPriority.CONTROL, appId); |
| } |
| } |
| |
| /** |
| * Withdraws packet intercepts. |
| */ |
| private void withdrawIntercepts() { |
| TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); |
| selector.matchEthType(TYPE_LLDP); |
| packetService.cancelPackets(selector.build(), PacketPriority.CONTROL, appId); |
| selector.matchEthType(TYPE_BSN); |
| packetService.cancelPackets(selector.build(), PacketPriority.CONTROL, appId); |
| } |
| |
| protected SuppressionRules rules() { |
| return rules; |
| } |
| |
| protected void updateRules(SuppressionRules newRules) { |
| if (!rules.equals(newRules)) { |
| rules = newRules; |
| loadDevices(); |
| } |
| } |
| |
| /** |
| * Processes device mastership role changes. |
| */ |
| private class InternalRoleListener implements MastershipListener { |
| @Override |
| public void event(MastershipEvent event) { |
| if (MastershipEvent.Type.BACKUPS_CHANGED.equals(event.type())) { |
| // only need new master events |
| return; |
| } |
| |
| eventExecutor.execute(() -> { |
| DeviceId deviceId = event.subject(); |
| Device device = deviceService.getDevice(deviceId); |
| if (device == null) { |
| log.debug("Device {} doesn't exist, or isn't there yet", deviceId); |
| return; |
| } |
| if (clusterService.getLocalNode().id().equals(event.roleInfo().master())) { |
| updateDevice(device).ifPresent(ld -> updatePorts(ld, device.id())); |
| } |
| }); |
| } |
| } |
| |
| private class DeviceEventProcessor implements Runnable { |
| |
| DeviceEvent event; |
| |
| DeviceEventProcessor(DeviceEvent event) { |
| this.event = event; |
| } |
| |
| @Override |
| public void run() { |
| Device device = event.subject(); |
| Port port = event.port(); |
| if (device == null) { |
| log.error("Device is null."); |
| return; |
| } |
| log.trace("{} {} {}", event.type(), event.subject(), event); |
| final DeviceId deviceId = device.id(); |
| switch (event.type()) { |
| case DEVICE_ADDED: |
| case DEVICE_UPDATED: |
| updateDevice(device).ifPresent(ld -> updatePorts(ld, deviceId)); |
| break; |
| case PORT_ADDED: |
| case PORT_UPDATED: |
| if (port.isEnabled()) { |
| updateDevice(device).ifPresent(ld -> updatePort(ld, port)); |
| } else { |
| log.debug("Port down {}", port); |
| removePort(port); |
| providerService.linksVanished(new ConnectPoint(port.element().id(), |
| port.number())); |
| } |
| break; |
| case PORT_REMOVED: |
| log.debug("Port removed {}", port); |
| removePort(port); |
| providerService.linksVanished(new ConnectPoint(port.element().id(), |
| port.number())); |
| break; |
| case DEVICE_REMOVED: |
| case DEVICE_SUSPENDED: |
| log.debug("Device removed {}", deviceId); |
| removeDevice(deviceId); |
| providerService.linksVanished(deviceId); |
| break; |
| case DEVICE_AVAILABILITY_CHANGED: |
| if (deviceService.isAvailable(deviceId)) { |
| log.debug("Device up {}", deviceId); |
| updateDevice(device).ifPresent(ld -> updatePorts(ld, deviceId)); |
| } else { |
| log.debug("Device down {}", deviceId); |
| removeDevice(deviceId); |
| providerService.linksVanished(deviceId); |
| } |
| break; |
| case PORT_STATS_UPDATED: |
| break; |
| default: |
| log.debug("Unknown event {}", event); |
| } |
| } |
| } |
| |
| /** |
| * Processes device events. |
| */ |
| private class InternalDeviceListener implements DeviceListener { |
| @Override |
| public void event(DeviceEvent event) { |
| if (event.type() == Type.PORT_STATS_UPDATED) { |
| return; |
| } |
| |
| Runnable deviceEventProcessor = new DeviceEventProcessor(event); |
| |
| eventExecutor.execute(deviceEventProcessor); |
| } |
| } |
| |
| /** |
| * Processes incoming packets. |
| */ |
| private class InternalPacketProcessor implements PacketProcessor { |
| @Override |
| public void process(PacketContext context) { |
| if (context == null || context.isHandled()) { |
| return; |
| } |
| |
| Ethernet eth = context.inPacket().parsed(); |
| if (eth == null || (eth.getEtherType() != TYPE_LLDP && eth.getEtherType() != TYPE_BSN)) { |
| return; |
| } |
| |
| LinkDiscovery ld = discoverers.get(context.inPacket().receivedFrom().deviceId()); |
| if (ld == null) { |
| return; |
| } |
| |
| if (ld.handleLldp(context)) { |
| context.block(); |
| } |
| } |
| } |
| |
| /** |
| * Auxiliary task to keep device ports up to date. |
| */ |
| private final class SyncDeviceInfoTask implements Runnable { |
| @Override |
| public void run() { |
| if (Thread.currentThread().isInterrupted()) { |
| log.info("Interrupted, quitting"); |
| return; |
| } |
| // check what deviceService sees, to see if we are missing anything |
| try { |
| loadDevices(); |
| } catch (Exception e) { |
| // Catch all exceptions to avoid task being suppressed |
| log.error("Exception thrown during synchronization process", e); |
| } |
| } |
| } |
| |
| /** |
| * Auxiliary task for pruning stale links. |
| */ |
| private class LinkPrunerTask implements Runnable { |
| @Override |
| public void run() { |
| if (Thread.currentThread().isInterrupted()) { |
| log.info("Interrupted, quitting"); |
| return; |
| } |
| |
| try { |
| // TODO: There is still a slight possibility of mastership |
| // change occurring right with link going stale. This will |
| // result in the stale link not being pruned. |
| Maps.filterEntries(linkTimes, e -> { |
| if (!masterService.isLocalMaster(e.getKey().dst().deviceId())) { |
| return true; |
| } |
| if (isStale(e.getValue())) { |
| providerService.linkVanished(new DefaultLinkDescription(e.getKey().src(), |
| e.getKey().dst(), |
| DIRECT)); |
| return true; |
| } |
| return false; |
| }).clear(); |
| |
| } catch (Exception e) { |
| // Catch all exceptions to avoid task being suppressed |
| if (!shuttingDown) { |
| // Error condition |
| log.error("Exception thrown during link pruning process", e); |
| } else { |
| // Provider is shutting down, the error can be ignored |
| log.trace("Shutting down, ignoring error", e); |
| } |
| } |
| } |
| |
| private boolean isStale(long lastSeen) { |
| return lastSeen < System.currentTimeMillis() - staleLinkAge; |
| } |
| } |
| |
| /** |
| * Provides processing context for the device link discovery helpers. |
| */ |
| private class InternalDiscoveryContext implements LinkDiscoveryContext { |
| @Override |
| public MastershipService mastershipService() { |
| return masterService; |
| } |
| |
| @Override |
| public LinkProviderService providerService() { |
| return providerService; |
| } |
| |
| @Override |
| public PacketService packetService() { |
| return packetService; |
| } |
| |
| @Override |
| public long probeRate() { |
| return probeRate; |
| } |
| |
| @Override |
| public boolean useBddp() { |
| return useBddp; |
| } |
| |
| @Override |
| public void touchLink(LinkKey key) { |
| linkTimes.put(key, System.currentTimeMillis()); |
| } |
| |
| @Override |
| public DeviceService deviceService() { |
| return deviceService; |
| } |
| |
| @Override |
| public String fingerprint() { |
| return buildSrcMac(); |
| } |
| } |
| |
| static final EnumSet<NetworkConfigEvent.Type> CONFIG_CHANGED |
| = EnumSet.of(NetworkConfigEvent.Type.CONFIG_ADDED, |
| NetworkConfigEvent.Type.CONFIG_UPDATED, |
| NetworkConfigEvent.Type.CONFIG_REMOVED); |
| |
| private class InternalConfigListener implements NetworkConfigListener { |
| |
| private synchronized void reconfigureSuppressionRules(SuppressionConfig cfg) { |
| if (cfg == null) { |
| log.error("Suppression Config is null."); |
| return; |
| } |
| |
| SuppressionRules newRules = new SuppressionRules(cfg.deviceTypes(), |
| cfg.annotation()); |
| |
| updateRules(newRules); |
| } |
| |
| @Override |
| public void event(NetworkConfigEvent event) { |
| eventExecutor.execute(() -> { |
| if (event.configClass() == LinkDiscoveryFromDevice.class && |
| CONFIG_CHANGED.contains(event.type())) { |
| |
| if (event.subject() instanceof DeviceId) { |
| final DeviceId did = (DeviceId) event.subject(); |
| Device device = deviceService.getDevice(did); |
| updateDevice(device).ifPresent(ld -> updatePorts(ld, did)); |
| } |
| |
| } else if (event.configClass() == LinkDiscoveryFromPort.class && |
| CONFIG_CHANGED.contains(event.type())) { |
| |
| if (event.subject() instanceof ConnectPoint) { |
| ConnectPoint cp = (ConnectPoint) event.subject(); |
| if (cp.elementId() instanceof DeviceId) { |
| final DeviceId did = (DeviceId) cp.elementId(); |
| Device device = deviceService.getDevice(did); |
| Port port = deviceService.getPort(did, cp.port()); |
| updateDevice(device).ifPresent(ld -> updatePort(ld, port)); |
| } |
| } |
| |
| } else if (event.configClass().equals(SuppressionConfig.class) && |
| (event.type() == NetworkConfigEvent.Type.CONFIG_ADDED || |
| event.type() == NetworkConfigEvent.Type.CONFIG_UPDATED)) { |
| SuppressionConfig cfg = cfgRegistry.getConfig(appId, SuppressionConfig.class); |
| reconfigureSuppressionRules(cfg); |
| log.trace("Network config reconfigured"); |
| } |
| }); |
| } |
| } |
| } |