| /* |
| * Copyright 2014-present Open Networking Foundation |
| * |
| * 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.net.host.impl; |
| |
| 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.apache.felix.scr.annotations.Service; |
| import org.onlab.packet.Ip6Address; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.packet.MacAddress; |
| import org.onlab.packet.VlanId; |
| import org.onlab.util.Tools; |
| import org.onosproject.cfg.ComponentConfigService; |
| import org.onosproject.net.intf.InterfaceService; |
| import org.onosproject.net.HostLocation; |
| import org.onosproject.net.edge.EdgePortService; |
| import org.onosproject.net.provider.AbstractListenerProviderRegistry; |
| import org.onosproject.net.config.NetworkConfigEvent; |
| import org.onosproject.net.config.NetworkConfigListener; |
| import org.onosproject.net.config.NetworkConfigService; |
| import org.onosproject.net.config.basics.BasicHostConfig; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Host; |
| import org.onosproject.net.HostId; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.host.HostAdminService; |
| import org.onosproject.net.host.HostDescription; |
| import org.onosproject.net.host.HostEvent; |
| import org.onosproject.net.host.HostListener; |
| import org.onosproject.net.host.HostProvider; |
| import org.onosproject.net.host.HostProviderRegistry; |
| import org.onosproject.net.host.HostProviderService; |
| import org.onosproject.net.host.HostService; |
| import org.onosproject.net.host.HostStore; |
| import org.onosproject.net.host.HostStoreDelegate; |
| import org.onosproject.net.packet.PacketService; |
| import org.onosproject.net.provider.AbstractProviderService; |
| import org.osgi.service.component.ComponentContext; |
| import org.slf4j.Logger; |
| |
| import java.util.Dictionary; |
| import java.util.Set; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static com.google.common.base.Preconditions.checkState; |
| import static org.onlab.packet.IPv6.getLinkLocalAddress; |
| import static org.onosproject.net.link.ProbedLinkProvider.DEFAULT_MAC; |
| import static org.onosproject.security.AppGuard.checkPermission; |
| import static org.onosproject.security.AppPermission.Type.HOST_EVENT; |
| import static org.onosproject.security.AppPermission.Type.HOST_READ; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Provides basic implementation of the host SB & NB APIs. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class HostManager |
| extends AbstractListenerProviderRegistry<HostEvent, HostListener, HostProvider, HostProviderService> |
| implements HostService, HostAdminService, HostProviderRegistry { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| public static final String HOST_ID_NULL = "Host ID cannot be null"; |
| |
| private final NetworkConfigListener networkConfigListener = new InternalNetworkConfigListener(); |
| |
| private HostStoreDelegate delegate = new InternalStoreDelegate(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected HostStore store; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PacketService packetService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected NetworkConfigService networkConfigService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected InterfaceService interfaceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected EdgePortService edgePortService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ComponentConfigService cfgService; |
| |
| @Property(name = "allowDuplicateIps", boolValue = true, |
| label = "Enable removal of duplicate ip address") |
| private boolean allowDuplicateIps = true; |
| |
| @Property(name = "monitorHosts", boolValue = false, |
| label = "Enable/Disable monitoring of hosts") |
| private boolean monitorHosts = false; |
| |
| @Property(name = "probeRate", longValue = 30000, |
| label = "Set the probe Rate in milli seconds") |
| private long probeRate = 30000; |
| |
| @Property(name = "greedyLearningIpv6", boolValue = false, |
| label = "Enable/Disable greedy learning of IPv6 link local address") |
| private boolean greedyLearningIpv6 = false; |
| |
| private HostMonitor monitor; |
| |
| |
| @Activate |
| public void activate(ComponentContext context) { |
| store.setDelegate(delegate); |
| eventDispatcher.addSink(HostEvent.class, listenerRegistry); |
| cfgService.registerProperties(getClass()); |
| networkConfigService.addListener(networkConfigListener); |
| monitor = new HostMonitor(packetService, this, interfaceService, edgePortService); |
| monitor.setProbeRate(probeRate); |
| monitor.start(); |
| modified(context); |
| cfgService.registerProperties(getClass()); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| store.unsetDelegate(delegate); |
| eventDispatcher.removeSink(HostEvent.class); |
| networkConfigService.removeListener(networkConfigListener); |
| cfgService.unregisterProperties(getClass(), false); |
| monitor.shutdown(); |
| log.info("Stopped"); |
| } |
| |
| @Modified |
| public void modified(ComponentContext context) { |
| boolean oldValue = monitorHosts; |
| readComponentConfiguration(context); |
| if (probeRate > 0) { |
| monitor.setProbeRate(probeRate); |
| } else { |
| log.warn("probeRate cannot be lessthan 0"); |
| } |
| |
| if (oldValue != monitorHosts) { |
| if (monitorHosts) { |
| startMonitoring(); |
| } else { |
| stopMonitoring(); |
| } |
| } |
| } |
| |
| /** |
| * Extracts properties from the component configuration context. |
| * |
| * @param context the component context |
| */ |
| private void readComponentConfiguration(ComponentContext context) { |
| Dictionary<?, ?> properties = context.getProperties(); |
| Boolean flag; |
| |
| flag = Tools.isPropertyEnabled(properties, "monitorHosts"); |
| if (flag == null) { |
| log.info("monitorHosts is not enabled " + |
| "using current value of {}", monitorHosts); |
| } else { |
| monitorHosts = flag; |
| log.info("Configured. monitorHosts {}", |
| monitorHosts ? "enabled" : "disabled"); |
| } |
| |
| Long longValue = Tools.getLongProperty(properties, "probeRate"); |
| if (longValue == null || longValue == 0) { |
| log.info("probeRate is not set sing default value of {}", probeRate); |
| } else { |
| probeRate = longValue; |
| log.info("Configured. probeRate {}", probeRate); |
| } |
| |
| flag = Tools.isPropertyEnabled(properties, "allowDuplicateIps"); |
| if (flag == null) { |
| log.info("Removal of duplicate ip address is not configured"); |
| } else { |
| allowDuplicateIps = flag; |
| log.info("Removal of duplicate ip address is {}", |
| allowDuplicateIps ? "disabled" : "enabled"); |
| } |
| |
| flag = Tools.isPropertyEnabled(properties, "greedyLearningIpv6"); |
| if (flag == null) { |
| log.info("greedy learning is not enabled " + |
| "using current value of {}", greedyLearningIpv6); |
| } else { |
| greedyLearningIpv6 = flag; |
| log.info("Configured. greedyLearningIpv6 {}", |
| greedyLearningIpv6 ? "enabled" : "disabled"); |
| } |
| |
| } |
| |
| /** |
| * Starts monitoring the hosts by IP Address. |
| */ |
| private void startMonitoring() { |
| store.getHosts().forEach(host -> { |
| host.ipAddresses().forEach(ip -> { |
| monitor.addMonitoringFor(ip); |
| }); |
| }); |
| } |
| |
| /** |
| * Stops monitoring the hosts by IP Address. |
| */ |
| private void stopMonitoring() { |
| store.getHosts().forEach(host -> { |
| host.ipAddresses().forEach(ip -> { |
| monitor.stopMonitoring(ip); |
| }); |
| }); |
| } |
| |
| @Override |
| protected HostProviderService createProviderService(HostProvider provider) { |
| monitor.registerHostProvider(provider); |
| return new InternalHostProviderService(provider); |
| } |
| |
| @Override |
| public int getHostCount() { |
| checkPermission(HOST_READ); |
| return store.getHostCount(); |
| } |
| |
| @Override |
| public Iterable<Host> getHosts() { |
| checkPermission(HOST_READ); |
| return store.getHosts(); |
| } |
| |
| @Override |
| public Host getHost(HostId hostId) { |
| checkPermission(HOST_READ); |
| checkNotNull(hostId, HOST_ID_NULL); |
| return store.getHost(hostId); |
| } |
| |
| @Override |
| public Set<Host> getHostsByVlan(VlanId vlanId) { |
| checkPermission(HOST_READ); |
| return store.getHosts(vlanId); |
| } |
| |
| @Override |
| public Set<Host> getHostsByMac(MacAddress mac) { |
| checkPermission(HOST_READ); |
| checkNotNull(mac, "MAC address cannot be null"); |
| return store.getHosts(mac); |
| } |
| |
| @Override |
| public Set<Host> getHostsByIp(IpAddress ip) { |
| checkPermission(HOST_READ); |
| checkNotNull(ip, "IP address cannot be null"); |
| return store.getHosts(ip); |
| } |
| |
| @Override |
| public Set<Host> getConnectedHosts(ConnectPoint connectPoint) { |
| checkPermission(HOST_READ); |
| checkNotNull(connectPoint, "Connection point cannot be null"); |
| return store.getConnectedHosts(connectPoint); |
| } |
| |
| @Override |
| public Set<Host> getConnectedHosts(DeviceId deviceId) { |
| checkPermission(HOST_READ); |
| checkNotNull(deviceId, "Device ID cannot be null"); |
| return store.getConnectedHosts(deviceId); |
| } |
| |
| @Override |
| public void startMonitoringIp(IpAddress ip) { |
| checkPermission(HOST_EVENT); |
| monitor.addMonitoringFor(ip); |
| } |
| |
| @Override |
| public void stopMonitoringIp(IpAddress ip) { |
| checkPermission(HOST_EVENT); |
| monitor.stopMonitoring(ip); |
| } |
| |
| @Override |
| public void requestMac(IpAddress ip) { |
| // FIXME!!!! Auto-generated method stub |
| } |
| |
| @Override |
| public void removeHost(HostId hostId) { |
| checkNotNull(hostId, HOST_ID_NULL); |
| store.removeHost(hostId); |
| } |
| |
| // Personalized host provider service issued to the supplied provider. |
| private class InternalHostProviderService |
| extends AbstractProviderService<HostProvider> |
| implements HostProviderService { |
| InternalHostProviderService(HostProvider provider) { |
| super(provider); |
| } |
| |
| @Override |
| public void hostDetected(HostId hostId, HostDescription hostDescription, boolean replaceIps) { |
| checkNotNull(hostId, HOST_ID_NULL); |
| checkValidity(); |
| hostDescription = validateHost(hostDescription, hostId); |
| |
| if (!allowDuplicateIps) { |
| removeDuplicates(hostId, hostDescription); |
| } |
| store.createOrUpdateHost(provider().id(), hostId, |
| hostDescription, replaceIps); |
| |
| if (monitorHosts) { |
| hostDescription.ipAddress().forEach(ip -> { |
| monitor.addMonitoringFor(ip); |
| }); |
| } |
| |
| // Greedy learning of IPv6 host. We have to disable the greedy |
| // learning of configured hosts. Validate hosts each time will |
| // overwrite the learnt information with the configured informations. |
| if (greedyLearningIpv6) { |
| // Auto-generation of the IPv6 link local address |
| // using the mac address |
| Ip6Address targetIp6Address = Ip6Address.valueOf( |
| getLinkLocalAddress(hostId.mac().toBytes()) |
| ); |
| // If we already know this guy we don't need to do other |
| if (!hostDescription.ipAddress().contains(targetIp6Address)) { |
| Host host = store.getHost(hostId); |
| // Configured host, skip it. |
| if (host != null && host.configured()) { |
| return; |
| } |
| // Host does not exist in the store or the target is not known |
| if ((host == null || !host.ipAddresses().contains(targetIp6Address))) { |
| // We generate ONOS ip from the ONOS default mac |
| // We could use the mac generated for the link |
| // discovery but maybe does not worth |
| MacAddress onosMacAddress = MacAddress.valueOf(DEFAULT_MAC); |
| Ip6Address onosIp6Address = Ip6Address.valueOf( |
| getLinkLocalAddress(onosMacAddress.toBytes()) |
| ); |
| // We send a probe using the monitoring service |
| monitor.sendProbe( |
| hostDescription.location(), |
| targetIp6Address, |
| onosIp6Address, |
| onosMacAddress, |
| hostId.vlanId() |
| ); |
| } |
| } |
| } |
| } |
| |
| // When a new IP is detected, remove that IP on other hosts if it exists |
| public void removeDuplicates(HostId hostId, HostDescription desc) { |
| desc.ipAddress().forEach(ip -> { |
| Set<Host> allHosts = store.getHosts(ip); |
| allHosts.forEach(eachHost -> { |
| if (!(eachHost.id().equals(hostId))) { |
| log.info("Duplicate ip {} found on host {} and {}", ip, |
| hostId.toString(), eachHost.id().toString()); |
| store.removeIp(eachHost.id(), ip); |
| } |
| }); |
| }); |
| } |
| |
| // returns a HostDescription made from the union of the BasicHostConfig |
| // annotations if it exists |
| private HostDescription validateHost(HostDescription hostDescription, HostId hostId) { |
| BasicHostConfig cfg = networkConfigService.getConfig(hostId, BasicHostConfig.class); |
| checkState(cfg == null || cfg.isAllowed(), "Host {} is not allowed", hostId); |
| |
| return BasicHostOperator.combine(cfg, hostDescription); |
| } |
| |
| @Override |
| public void hostVanished(HostId hostId) { |
| checkNotNull(hostId, HOST_ID_NULL); |
| checkValidity(); |
| Host host = store.getHost(hostId); |
| |
| if (!allowedToChange(hostId)) { |
| log.info("Request to remove {} is ignored due to provider mismatch", hostId); |
| return; |
| } |
| |
| if (monitorHosts) { |
| host.ipAddresses().forEach(ip -> { |
| monitor.stopMonitoring(ip); |
| }); |
| } |
| store.removeHost(hostId); |
| } |
| |
| @Override |
| public void removeIpFromHost(HostId hostId, IpAddress ipAddress) { |
| checkNotNull(hostId, HOST_ID_NULL); |
| checkValidity(); |
| |
| if (!allowedToChange(hostId)) { |
| log.info("Request to remove {} from {} is ignored due to provider mismatch", |
| ipAddress, hostId); |
| return; |
| } |
| |
| store.removeIp(hostId, ipAddress); |
| } |
| |
| @Override |
| public void removeLocationFromHost(HostId hostId, HostLocation location) { |
| checkNotNull(hostId, HOST_ID_NULL); |
| checkValidity(); |
| |
| if (!allowedToChange(hostId)) { |
| log.info("Request to remove {} from {} is ignored due to provider mismatch", |
| location, hostId); |
| return; |
| } |
| |
| store.removeLocation(hostId, location); |
| } |
| |
| @Override |
| public MacAddress addPendingHostLocation(HostId hostId, HostLocation hostLocation) { |
| return store.addPendingHostLocation(hostId, hostLocation); |
| } |
| |
| @Override |
| public void removePendingHostLocation(MacAddress probeMac) { |
| store.removePendingHostLocation(probeMac); |
| } |
| |
| private boolean allowedToChange(HostId hostId) { |
| // Disallow removing inexistent host or host provided by others |
| Host host = store.getHost(hostId); |
| return host != null && host.providerId().equals(provider().id()); |
| } |
| } |
| |
| // Store delegate to re-post events emitted from the store. |
| private class InternalStoreDelegate implements HostStoreDelegate { |
| @Override |
| public void notify(HostEvent event) { |
| post(event); |
| } |
| } |
| |
| // listens for NetworkConfigEvents of type BasicHostConfig and removes |
| // links that the config does not allow |
| private class InternalNetworkConfigListener implements NetworkConfigListener { |
| @Override |
| public boolean isRelevant(NetworkConfigEvent event) { |
| return (event.type() == NetworkConfigEvent.Type.CONFIG_ADDED |
| || event.type() == NetworkConfigEvent.Type.CONFIG_UPDATED) |
| && (event.configClass().equals(BasicHostConfig.class)); |
| } |
| |
| @Override |
| public void event(NetworkConfigEvent event) { |
| log.debug("Detected host network config event {}", event.type()); |
| HostEvent he = null; |
| |
| HostId hostId = (HostId) event.subject(); |
| BasicHostConfig cfg = |
| networkConfigService.getConfig(hostId, BasicHostConfig.class); |
| |
| if (!isAllowed(cfg)) { |
| kickOutBadHost(hostId); |
| } else { |
| Host host = getHost(hostId); |
| HostDescription desc = |
| (host == null) ? null : BasicHostOperator.descriptionOf(host); |
| desc = BasicHostOperator.combine(cfg, desc); |
| if (desc != null) { |
| he = store.createOrUpdateHost(host.providerId(), hostId, desc, false); |
| } |
| } |
| |
| if (he != null) { |
| post(he); |
| } |
| } |
| } |
| |
| // by default allowed, otherwise check flag |
| private boolean isAllowed(BasicHostConfig cfg) { |
| return (cfg == null || cfg.isAllowed()); |
| } |
| |
| // removes the specified host, if it exists |
| private void kickOutBadHost(HostId hostId) { |
| Host badHost = getHost(hostId); |
| if (badHost != null) { |
| removeHost(hostId); |
| } |
| } |
| } |