Madan Jampani | ab99404 | 2014-10-13 15:34:04 -0700 | [diff] [blame^] | 1 | package org.onlab.onos.store.host.impl; |
| 2 | |
| 3 | import com.google.common.collect.HashMultimap; |
| 4 | import com.google.common.collect.ImmutableSet; |
| 5 | import com.google.common.collect.Multimap; |
| 6 | import com.google.common.collect.Sets; |
| 7 | |
| 8 | import org.apache.felix.scr.annotations.Activate; |
| 9 | import org.apache.felix.scr.annotations.Component; |
| 10 | import org.apache.felix.scr.annotations.Deactivate; |
| 11 | import org.apache.felix.scr.annotations.Reference; |
| 12 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 13 | import org.apache.felix.scr.annotations.Service; |
| 14 | import org.onlab.onos.cluster.ClusterService; |
| 15 | import org.onlab.onos.net.Annotations; |
| 16 | import org.onlab.onos.net.ConnectPoint; |
| 17 | import org.onlab.onos.net.DefaultHost; |
| 18 | import org.onlab.onos.net.DeviceId; |
| 19 | import org.onlab.onos.net.Host; |
| 20 | import org.onlab.onos.net.HostId; |
| 21 | import org.onlab.onos.net.HostLocation; |
| 22 | import org.onlab.onos.net.host.HostClockService; |
| 23 | import org.onlab.onos.net.host.HostDescription; |
| 24 | import org.onlab.onos.net.host.HostEvent; |
| 25 | import org.onlab.onos.net.host.HostStore; |
| 26 | import org.onlab.onos.net.host.HostStoreDelegate; |
| 27 | import org.onlab.onos.net.host.PortAddresses; |
| 28 | import org.onlab.onos.net.provider.ProviderId; |
| 29 | import org.onlab.onos.store.AbstractStore; |
| 30 | import org.onlab.onos.store.Timestamp; |
| 31 | import org.onlab.onos.store.cluster.messaging.ClusterCommunicationService; |
| 32 | import org.onlab.onos.store.common.impl.Timestamped; |
| 33 | import org.onlab.packet.IpPrefix; |
| 34 | import org.onlab.packet.MacAddress; |
| 35 | import org.onlab.packet.VlanId; |
| 36 | import org.slf4j.Logger; |
| 37 | |
| 38 | import java.util.HashSet; |
| 39 | import java.util.Map; |
| 40 | import java.util.Set; |
| 41 | import java.util.concurrent.ConcurrentHashMap; |
| 42 | |
| 43 | import static org.onlab.onos.net.host.HostEvent.Type.*; |
| 44 | import static org.slf4j.LoggerFactory.getLogger; |
| 45 | |
| 46 | /** |
| 47 | * Manages inventory of end-station hosts in distributed data store |
| 48 | * that uses optimistic replication and gossip based techniques. |
| 49 | */ |
| 50 | @Component(immediate = true) |
| 51 | @Service |
| 52 | public class GossipHostStore |
| 53 | extends AbstractStore<HostEvent, HostStoreDelegate> |
| 54 | implements HostStore { |
| 55 | |
| 56 | private final Logger log = getLogger(getClass()); |
| 57 | |
| 58 | // Host inventory |
| 59 | private final Map<HostId, StoredHost> hosts = new ConcurrentHashMap<>(2000000, 0.75f, 16); |
| 60 | |
| 61 | private final Map<HostId, Timestamped<Host>> removedHosts = new ConcurrentHashMap<>(2000000, 0.75f, 16); |
| 62 | |
| 63 | // Hosts tracked by their location |
| 64 | private final Multimap<ConnectPoint, Host> locations = HashMultimap.create(); |
| 65 | |
| 66 | private final Map<ConnectPoint, PortAddresses> portAddresses = |
| 67 | new ConcurrentHashMap<>(); |
| 68 | |
| 69 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 70 | protected HostClockService hostClockService; |
| 71 | |
| 72 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 73 | protected ClusterCommunicationService clusterCommunicator; |
| 74 | |
| 75 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 76 | protected ClusterService clusterService; |
| 77 | |
| 78 | @Activate |
| 79 | public void activate() { |
| 80 | log.info("Started"); |
| 81 | } |
| 82 | |
| 83 | @Deactivate |
| 84 | public void deactivate() { |
| 85 | log.info("Stopped"); |
| 86 | } |
| 87 | |
| 88 | @Override |
| 89 | public HostEvent createOrUpdateHost(ProviderId providerId, HostId hostId, |
| 90 | HostDescription hostDescription) { |
| 91 | Timestamp timestamp = hostClockService.getTimestamp(hostId); |
| 92 | return createOrUpdateHostInternal(providerId, hostId, hostDescription, timestamp); |
| 93 | // TODO: tell peers. |
| 94 | } |
| 95 | |
| 96 | private HostEvent createOrUpdateHostInternal(ProviderId providerId, HostId hostId, |
| 97 | HostDescription hostDescription, Timestamp timestamp) { |
| 98 | StoredHost host = hosts.get(hostId); |
| 99 | if (host == null) { |
| 100 | return createHost(providerId, hostId, hostDescription, timestamp); |
| 101 | } |
| 102 | return updateHost(providerId, host, hostDescription, timestamp); |
| 103 | } |
| 104 | |
| 105 | // creates a new host and sends HOST_ADDED |
| 106 | private HostEvent createHost(ProviderId providerId, HostId hostId, |
| 107 | HostDescription descr, Timestamp timestamp) { |
| 108 | synchronized (this) { |
| 109 | // If this host was previously removed, first ensure |
| 110 | // this new request is "newer" |
| 111 | if (removedHosts.containsKey(hostId)) { |
| 112 | if (removedHosts.get(hostId).isNewer(timestamp)) { |
| 113 | return null; |
| 114 | } else { |
| 115 | removedHosts.remove(hostId); |
| 116 | } |
| 117 | } |
| 118 | StoredHost newhost = new StoredHost(providerId, hostId, |
| 119 | descr.hwAddress(), |
| 120 | descr.vlan(), |
| 121 | new Timestamped<>(descr.location(), timestamp), |
| 122 | ImmutableSet.of(descr.ipAddress())); |
| 123 | hosts.put(hostId, newhost); |
| 124 | locations.put(descr.location(), newhost); |
| 125 | return new HostEvent(HOST_ADDED, newhost); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | // checks for type of update to host, sends appropriate event |
| 130 | private HostEvent updateHost(ProviderId providerId, StoredHost host, |
| 131 | HostDescription descr, Timestamp timestamp) { |
| 132 | HostEvent event; |
| 133 | if (!host.location.isNewer(timestamp) && !host.location().equals(descr.location())) { |
| 134 | host.setLocation(new Timestamped<>(descr.location(), timestamp)); |
| 135 | return new HostEvent(HOST_MOVED, host); |
| 136 | } |
| 137 | |
| 138 | if (host.ipAddresses().contains(descr.ipAddress())) { |
| 139 | return null; |
| 140 | } |
| 141 | |
| 142 | Set<IpPrefix> addresses = new HashSet<>(host.ipAddresses()); |
| 143 | addresses.add(descr.ipAddress()); |
| 144 | StoredHost updated = new StoredHost(providerId, host.id(), |
| 145 | host.mac(), host.vlan(), |
| 146 | host.location, addresses); |
| 147 | event = new HostEvent(HOST_UPDATED, updated); |
| 148 | synchronized (this) { |
| 149 | hosts.put(host.id(), updated); |
| 150 | locations.remove(host.location(), host); |
| 151 | locations.put(updated.location(), updated); |
| 152 | } |
| 153 | return event; |
| 154 | } |
| 155 | |
| 156 | @Override |
| 157 | public HostEvent removeHost(HostId hostId) { |
| 158 | Timestamp timestamp = hostClockService.getTimestamp(hostId); |
| 159 | return removeHostInternal(hostId, timestamp); |
| 160 | // TODO: tell peers |
| 161 | } |
| 162 | |
| 163 | private HostEvent removeHostInternal(HostId hostId, Timestamp timestamp) { |
| 164 | synchronized (this) { |
| 165 | Host host = hosts.remove(hostId); |
| 166 | if (host != null) { |
| 167 | locations.remove((host.location()), host); |
| 168 | removedHosts.put(hostId, new Timestamped<>(host, timestamp)); |
| 169 | return new HostEvent(HOST_REMOVED, host); |
| 170 | } |
| 171 | return null; |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | @Override |
| 176 | public int getHostCount() { |
| 177 | return hosts.size(); |
| 178 | } |
| 179 | |
| 180 | @Override |
| 181 | public Iterable<Host> getHosts() { |
| 182 | return ImmutableSet.<Host>copyOf(hosts.values()); |
| 183 | } |
| 184 | |
| 185 | @Override |
| 186 | public Host getHost(HostId hostId) { |
| 187 | return hosts.get(hostId); |
| 188 | } |
| 189 | |
| 190 | @Override |
| 191 | public Set<Host> getHosts(VlanId vlanId) { |
| 192 | Set<Host> vlanset = new HashSet<>(); |
| 193 | for (Host h : hosts.values()) { |
| 194 | if (h.vlan().equals(vlanId)) { |
| 195 | vlanset.add(h); |
| 196 | } |
| 197 | } |
| 198 | return vlanset; |
| 199 | } |
| 200 | |
| 201 | @Override |
| 202 | public Set<Host> getHosts(MacAddress mac) { |
| 203 | Set<Host> macset = new HashSet<>(); |
| 204 | for (Host h : hosts.values()) { |
| 205 | if (h.mac().equals(mac)) { |
| 206 | macset.add(h); |
| 207 | } |
| 208 | } |
| 209 | return macset; |
| 210 | } |
| 211 | |
| 212 | @Override |
| 213 | public Set<Host> getHosts(IpPrefix ip) { |
| 214 | Set<Host> ipset = new HashSet<>(); |
| 215 | for (Host h : hosts.values()) { |
| 216 | if (h.ipAddresses().contains(ip)) { |
| 217 | ipset.add(h); |
| 218 | } |
| 219 | } |
| 220 | return ipset; |
| 221 | } |
| 222 | |
| 223 | @Override |
| 224 | public Set<Host> getConnectedHosts(ConnectPoint connectPoint) { |
| 225 | return ImmutableSet.copyOf(locations.get(connectPoint)); |
| 226 | } |
| 227 | |
| 228 | @Override |
| 229 | public Set<Host> getConnectedHosts(DeviceId deviceId) { |
| 230 | Set<Host> hostset = new HashSet<>(); |
| 231 | for (ConnectPoint p : locations.keySet()) { |
| 232 | if (p.deviceId().equals(deviceId)) { |
| 233 | hostset.addAll(locations.get(p)); |
| 234 | } |
| 235 | } |
| 236 | return hostset; |
| 237 | } |
| 238 | |
| 239 | @Override |
| 240 | public void updateAddressBindings(PortAddresses addresses) { |
| 241 | synchronized (portAddresses) { |
| 242 | PortAddresses existing = portAddresses.get(addresses.connectPoint()); |
| 243 | if (existing == null) { |
| 244 | portAddresses.put(addresses.connectPoint(), addresses); |
| 245 | } else { |
| 246 | Set<IpPrefix> union = Sets.union(existing.ips(), addresses.ips()) |
| 247 | .immutableCopy(); |
| 248 | |
| 249 | MacAddress newMac = (addresses.mac() == null) ? existing.mac() |
| 250 | : addresses.mac(); |
| 251 | |
| 252 | PortAddresses newAddresses = |
| 253 | new PortAddresses(addresses.connectPoint(), union, newMac); |
| 254 | |
| 255 | portAddresses.put(newAddresses.connectPoint(), newAddresses); |
| 256 | } |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | @Override |
| 261 | public void removeAddressBindings(PortAddresses addresses) { |
| 262 | synchronized (portAddresses) { |
| 263 | PortAddresses existing = portAddresses.get(addresses.connectPoint()); |
| 264 | if (existing != null) { |
| 265 | Set<IpPrefix> difference = |
| 266 | Sets.difference(existing.ips(), addresses.ips()).immutableCopy(); |
| 267 | |
| 268 | // If they removed the existing mac, set the new mac to null. |
| 269 | // Otherwise, keep the existing mac. |
| 270 | MacAddress newMac = existing.mac(); |
| 271 | if (addresses.mac() != null && addresses.mac().equals(existing.mac())) { |
| 272 | newMac = null; |
| 273 | } |
| 274 | |
| 275 | PortAddresses newAddresses = |
| 276 | new PortAddresses(addresses.connectPoint(), difference, newMac); |
| 277 | |
| 278 | portAddresses.put(newAddresses.connectPoint(), newAddresses); |
| 279 | } |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | @Override |
| 284 | public void clearAddressBindings(ConnectPoint connectPoint) { |
| 285 | synchronized (portAddresses) { |
| 286 | portAddresses.remove(connectPoint); |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | @Override |
| 291 | public Set<PortAddresses> getAddressBindings() { |
| 292 | synchronized (portAddresses) { |
| 293 | return new HashSet<>(portAddresses.values()); |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | @Override |
| 298 | public PortAddresses getAddressBindingsForPort(ConnectPoint connectPoint) { |
| 299 | PortAddresses addresses; |
| 300 | |
| 301 | synchronized (portAddresses) { |
| 302 | addresses = portAddresses.get(connectPoint); |
| 303 | } |
| 304 | |
| 305 | if (addresses == null) { |
| 306 | addresses = new PortAddresses(connectPoint, null, null); |
| 307 | } |
| 308 | |
| 309 | return addresses; |
| 310 | } |
| 311 | |
| 312 | // Auxiliary extension to allow location to mutate. |
| 313 | private class StoredHost extends DefaultHost { |
| 314 | private Timestamped<HostLocation> location; |
| 315 | |
| 316 | /** |
| 317 | * Creates an end-station host using the supplied information. |
| 318 | * |
| 319 | * @param providerId provider identity |
| 320 | * @param id host identifier |
| 321 | * @param mac host MAC address |
| 322 | * @param vlan host VLAN identifier |
| 323 | * @param location host location |
| 324 | * @param ips host IP addresses |
| 325 | * @param annotations optional key/value annotations |
| 326 | */ |
| 327 | public StoredHost(ProviderId providerId, HostId id, |
| 328 | MacAddress mac, VlanId vlan, Timestamped<HostLocation> location, |
| 329 | Set<IpPrefix> ips, Annotations... annotations) { |
| 330 | super(providerId, id, mac, vlan, location.value(), ips, annotations); |
| 331 | this.location = location; |
| 332 | } |
| 333 | |
| 334 | void setLocation(Timestamped<HostLocation> location) { |
| 335 | this.location = location; |
| 336 | } |
| 337 | |
| 338 | @Override |
| 339 | public HostLocation location() { |
| 340 | return location.value(); |
| 341 | } |
| 342 | } |
| 343 | } |