Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.provider.nil.link.impl; |
| 17 | |
| 18 | import static com.google.common.base.Strings.isNullOrEmpty; |
| 19 | import static org.onlab.util.Tools.delay; |
| 20 | import static org.onlab.util.Tools.namedThreads; |
| 21 | import static org.slf4j.LoggerFactory.getLogger; |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 22 | import static org.onosproject.net.MastershipRole.MASTER; |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 23 | |
| 24 | import java.util.Dictionary; |
| 25 | import java.util.List; |
| 26 | import java.util.concurrent.ConcurrentMap; |
| 27 | import java.util.concurrent.ExecutorService; |
| 28 | import java.util.concurrent.Executors; |
| 29 | import java.util.concurrent.TimeUnit; |
| 30 | |
| 31 | import org.apache.felix.scr.annotations.Activate; |
| 32 | import org.apache.felix.scr.annotations.Component; |
| 33 | import org.apache.felix.scr.annotations.Deactivate; |
Ayaka Koshibe | 7dc1d04 | 2015-01-21 15:28:03 -0800 | [diff] [blame] | 34 | import org.apache.felix.scr.annotations.Modified; |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 35 | import org.apache.felix.scr.annotations.Property; |
| 36 | import org.apache.felix.scr.annotations.Reference; |
| 37 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 38 | import org.onosproject.mastership.MastershipService; |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 39 | import org.onosproject.net.ConnectPoint; |
| 40 | import org.onosproject.net.Device; |
| 41 | import org.onosproject.net.DeviceId; |
| 42 | import org.onosproject.net.Link; |
| 43 | import org.onosproject.net.PortNumber; |
| 44 | import org.onosproject.net.device.DeviceEvent; |
| 45 | import org.onosproject.net.device.DeviceListener; |
| 46 | import org.onosproject.net.device.DeviceService; |
| 47 | import org.onosproject.net.link.DefaultLinkDescription; |
| 48 | import org.onosproject.net.link.LinkDescription; |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 49 | import org.onosproject.net.link.LinkEvent; |
| 50 | import org.onosproject.net.link.LinkListener; |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 51 | import org.onosproject.net.link.LinkProvider; |
| 52 | import org.onosproject.net.link.LinkProviderRegistry; |
| 53 | import org.onosproject.net.link.LinkProviderService; |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 54 | import org.onosproject.net.link.LinkService; |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 55 | import org.onosproject.net.provider.AbstractProvider; |
| 56 | import org.onosproject.net.provider.ProviderId; |
| 57 | import org.osgi.service.component.ComponentContext; |
| 58 | import org.slf4j.Logger; |
| 59 | |
| 60 | import com.google.common.collect.Lists; |
| 61 | import com.google.common.collect.Maps; |
| 62 | |
| 63 | /** |
| 64 | * Provider which advertises fake/nonexistent links to the core. To be used for |
| 65 | * benchmarking only. |
| 66 | */ |
| 67 | @Component(immediate = true) |
| 68 | public class NullLinkProvider extends AbstractProvider implements LinkProvider { |
| 69 | |
| 70 | private final Logger log = getLogger(getClass()); |
| 71 | |
| 72 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 73 | protected DeviceService deviceService; |
| 74 | |
| 75 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 76 | protected MastershipService roleService; |
| 77 | |
| 78 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 79 | protected LinkProviderRegistry providerRegistry; |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 80 | private LinkService linkService; |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 81 | |
| 82 | private LinkProviderService providerService; |
| 83 | |
| 84 | private static final boolean FLICKER = false; |
| 85 | private static final int DEFAULT_RATE = 3000; |
| 86 | // For now, static switch port values |
| 87 | private static final PortNumber SRCPORT = PortNumber.portNumber(5); |
| 88 | private static final PortNumber DSTPORT = PortNumber.portNumber(6); |
| 89 | |
| 90 | private final InternalLinkProvider linkProvider = new InternalLinkProvider(); |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 91 | private final InternalLinkListener listener = new InternalLinkListener(); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 92 | |
| 93 | // Link descriptions |
| 94 | private final ConcurrentMap<ConnectPoint, LinkDescription> descriptions = Maps |
| 95 | .newConcurrentMap(); |
| 96 | |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 97 | // Local Device ID's that have been seen so far |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 98 | private final List<DeviceId> devices = Lists.newArrayList(); |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 99 | // tail ends of other islands |
| 100 | private final List<ConnectPoint> tails = Lists.newArrayList(); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 101 | |
| 102 | private ExecutorService linkDriver = Executors.newFixedThreadPool(1, |
Thomas Vachuska | 9ea3e6f | 2015-01-23 16:34:22 -0800 | [diff] [blame] | 103 | namedThreads("onos-null-link-driver")); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 104 | |
| 105 | // If true, 'flickers' links by alternating link up/down events at eventRate |
Ayaka Koshibe | 2a85e84 | 2015-01-29 15:39:40 -0800 | [diff] [blame] | 106 | @Property(name = "flicker", value = "false", |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 107 | label = "Setting to flap links") |
| 108 | private boolean flicker = FLICKER; |
| 109 | |
| 110 | // For flicker = true, duration between events in msec. |
Ayaka Koshibe | 2a85e84 | 2015-01-29 15:39:40 -0800 | [diff] [blame] | 111 | @Property(name = "eventRate", value = "3000", |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 112 | label = "Duration between Link Event") |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 113 | private int eventRate = DEFAULT_RATE; |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 114 | |
| 115 | public NullLinkProvider() { |
| 116 | super(new ProviderId("null", "org.onosproject.provider.nil")); |
| 117 | } |
| 118 | |
| 119 | @Activate |
| 120 | public void activate(ComponentContext context) { |
| 121 | providerService = providerRegistry.register(this); |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 122 | linkService = (LinkService) providerRegistry; |
| 123 | linkService.addListener(listener); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 124 | deviceService.addListener(linkProvider); |
| 125 | modified(context); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 126 | log.info("started"); |
| 127 | } |
| 128 | |
| 129 | @Deactivate |
| 130 | public void deactivate(ComponentContext context) { |
| 131 | if (flicker) { |
| 132 | try { |
| 133 | linkDriver.awaitTermination(1000, TimeUnit.MILLISECONDS); |
| 134 | } catch (InterruptedException e) { |
| 135 | log.error("LinkBuilder did not terminate"); |
| 136 | } |
| 137 | linkDriver.shutdownNow(); |
| 138 | } |
| 139 | deviceService.removeListener(linkProvider); |
| 140 | providerRegistry.unregister(this); |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 141 | linkService.removeListener(listener); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 142 | deviceService = null; |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 143 | linkService = null; |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 144 | |
| 145 | log.info("stopped"); |
| 146 | } |
| 147 | |
Ayaka Koshibe | 7dc1d04 | 2015-01-21 15:28:03 -0800 | [diff] [blame] | 148 | @Modified |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 149 | public void modified(ComponentContext context) { |
| 150 | if (context == null) { |
| 151 | log.info("No configs, using defaults: flicker={}, eventRate={}", |
| 152 | FLICKER, DEFAULT_RATE); |
| 153 | return; |
| 154 | } |
| 155 | Dictionary<?, ?> properties = context.getProperties(); |
| 156 | |
| 157 | boolean flickSetting; |
| 158 | int newRate; |
| 159 | try { |
| 160 | String s = (String) properties.get("flicker"); |
Ayaka Koshibe | 8851ed9 | 2015-01-22 12:07:24 -0800 | [diff] [blame] | 161 | flickSetting = isNullOrEmpty(s) ? flicker : Boolean.valueOf(s.trim()); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 162 | s = (String) properties.get("eventRate"); |
Ayaka Koshibe | 8851ed9 | 2015-01-22 12:07:24 -0800 | [diff] [blame] | 163 | newRate = isNullOrEmpty(s) ? eventRate : Integer.valueOf(s.trim()); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 164 | } catch (Exception e) { |
| 165 | log.warn(e.getMessage()); |
| 166 | flickSetting = flicker; |
| 167 | newRate = eventRate; |
| 168 | } |
| 169 | |
| 170 | if (flicker != flickSetting) { |
| 171 | flicker = flickSetting; |
| 172 | } |
| 173 | |
| 174 | if (flicker) { |
| 175 | if (eventRate != newRate) { |
| 176 | eventRate = newRate; |
| 177 | } |
| 178 | linkDriver.submit(new LinkDriver()); |
| 179 | } |
| 180 | log.info("Using new settings: flicker={}, eventRate={}", flicker, |
| 181 | eventRate); |
| 182 | } |
| 183 | |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 184 | // pick out substring from Deviceid |
| 185 | private String part(String devId) { |
| 186 | return devId.split(":")[1].substring(12, 16); |
| 187 | } |
| 188 | |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 189 | /** |
| 190 | * Adds links as devices are found, and generates LinkEvents. |
| 191 | */ |
| 192 | private class InternalLinkProvider implements DeviceListener { |
| 193 | |
| 194 | @Override |
| 195 | public void event(DeviceEvent event) { |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 196 | Device dev = event.subject(); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 197 | switch (event.type()) { |
| 198 | case DEVICE_ADDED: |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 199 | addLink(dev); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 200 | break; |
| 201 | case DEVICE_REMOVED: |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 202 | removeLink(dev); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 203 | break; |
| 204 | default: |
| 205 | break; |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | private void addLink(Device current) { |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 210 | DeviceId did = current.id(); |
| 211 | if (!MASTER.equals(roleService.getLocalRole(did))) { |
| 212 | String part = part(did.toString()); |
| 213 | if (part.equals("ffff")) { |
| 214 | // 'tail' of an island - link us <- tail |
| 215 | tails.add(new ConnectPoint(did, SRCPORT)); |
| 216 | } |
| 217 | tryLinkTail(); |
| 218 | return; |
| 219 | } |
| 220 | devices.add(did); |
| 221 | |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 222 | if (devices.size() == 1) { |
| 223 | return; |
| 224 | } |
| 225 | |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 226 | // Normal flow - attach new device to the last-seen device |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 227 | DeviceId prev = devices.get(devices.size() - 2); |
| 228 | ConnectPoint src = new ConnectPoint(prev, SRCPORT); |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 229 | ConnectPoint dst = new ConnectPoint(did, DSTPORT); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 230 | |
| 231 | LinkDescription fdesc = new DefaultLinkDescription(src, dst, |
| 232 | Link.Type.DIRECT); |
| 233 | LinkDescription rdesc = new DefaultLinkDescription(dst, src, |
| 234 | Link.Type.DIRECT); |
| 235 | descriptions.put(src, fdesc); |
| 236 | descriptions.put(dst, rdesc); |
| 237 | |
| 238 | providerService.linkDetected(fdesc); |
| 239 | providerService.linkDetected(rdesc); |
| 240 | } |
| 241 | |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 242 | // try to link to a tail to first element |
| 243 | private void tryLinkTail() { |
| 244 | if (tails.isEmpty() || devices.isEmpty()) { |
| 245 | return; |
| 246 | } |
| 247 | ConnectPoint first = new ConnectPoint(devices.get(0), DSTPORT); |
| 248 | boolean added = false; |
| 249 | for (ConnectPoint cp : tails) { |
| 250 | if (!linkService.getLinks(cp).isEmpty()) { |
| 251 | continue; |
| 252 | } |
| 253 | LinkDescription ld = new DefaultLinkDescription(cp, first, |
| 254 | Link.Type.DIRECT); |
| 255 | descriptions.put(cp, ld); |
| 256 | providerService.linkDetected(ld); |
| 257 | added = true; |
| 258 | break; |
| 259 | } |
| 260 | if (added) { |
| 261 | tails.clear(); |
| 262 | } |
| 263 | } |
| 264 | |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 265 | private void removeLink(Device device) { |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 266 | if (!MASTER.equals(roleService.getLocalRole(device.id()))) { |
| 267 | return; |
| 268 | } |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 269 | providerService.linksVanished(device.id()); |
| 270 | devices.remove(device.id()); |
| 271 | } |
Ayaka Koshibe | 35c71e1 | 2015-01-27 17:10:04 -0800 | [diff] [blame] | 272 | |
| 273 | } |
| 274 | |
| 275 | private class InternalLinkListener implements LinkListener { |
| 276 | |
| 277 | @Override |
| 278 | public void event(LinkEvent event) { |
| 279 | switch (event.type()) { |
| 280 | case LINK_ADDED: |
| 281 | // If a link from another island, cast one back. |
| 282 | DeviceId sdid = event.subject().src().deviceId(); |
| 283 | PortNumber pn = event.subject().src().port(); |
| 284 | |
| 285 | if (roleService.getLocalRole(sdid).equals(MASTER)) { |
| 286 | String part = part(sdid.toString()); |
| 287 | if (part.equals("ffff") && SRCPORT.equals(pn)) { |
| 288 | LinkDescription ld = new DefaultLinkDescription(event |
| 289 | .subject().dst(), event.subject().src(), |
| 290 | Link.Type.DIRECT); |
| 291 | descriptions.put(event.subject().dst(), ld); |
| 292 | providerService.linkDetected(ld); |
| 293 | } |
| 294 | return; |
| 295 | } |
| 296 | break; |
| 297 | default: |
| 298 | break; |
| 299 | } |
| 300 | } |
| 301 | |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | /** |
| 305 | * Generates link events using fake links. |
| 306 | */ |
| 307 | private class LinkDriver implements Runnable { |
| 308 | |
| 309 | @Override |
| 310 | public void run() { |
| 311 | while (!linkDriver.isShutdown()) { |
| 312 | for (LinkDescription desc : descriptions.values()) { |
| 313 | providerService.linkVanished(desc); |
| 314 | delay(eventRate); |
| 315 | providerService.linkDetected(desc); |
| 316 | delay(eventRate); |
| 317 | } |
| 318 | } |
| 319 | } |
| 320 | } |
| 321 | } |