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; |
| 49 | import org.onosproject.net.link.LinkProvider; |
| 50 | import org.onosproject.net.link.LinkProviderRegistry; |
| 51 | import org.onosproject.net.link.LinkProviderService; |
| 52 | import org.onosproject.net.provider.AbstractProvider; |
| 53 | import org.onosproject.net.provider.ProviderId; |
| 54 | import org.osgi.service.component.ComponentContext; |
| 55 | import org.slf4j.Logger; |
| 56 | |
| 57 | import com.google.common.collect.Lists; |
| 58 | import com.google.common.collect.Maps; |
| 59 | |
| 60 | /** |
| 61 | * Provider which advertises fake/nonexistent links to the core. To be used for |
| 62 | * benchmarking only. |
| 63 | */ |
| 64 | @Component(immediate = true) |
| 65 | public class NullLinkProvider extends AbstractProvider implements LinkProvider { |
| 66 | |
| 67 | private final Logger log = getLogger(getClass()); |
| 68 | |
| 69 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 70 | protected DeviceService deviceService; |
| 71 | |
| 72 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 73 | protected MastershipService roleService; |
| 74 | |
| 75 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 76 | protected LinkProviderRegistry providerRegistry; |
| 77 | |
| 78 | private LinkProviderService providerService; |
| 79 | |
| 80 | private static final boolean FLICKER = false; |
| 81 | private static final int DEFAULT_RATE = 3000; |
| 82 | // For now, static switch port values |
| 83 | private static final PortNumber SRCPORT = PortNumber.portNumber(5); |
| 84 | private static final PortNumber DSTPORT = PortNumber.portNumber(6); |
| 85 | |
| 86 | private final InternalLinkProvider linkProvider = new InternalLinkProvider(); |
| 87 | |
| 88 | // Link descriptions |
| 89 | private final ConcurrentMap<ConnectPoint, LinkDescription> descriptions = Maps |
| 90 | .newConcurrentMap(); |
| 91 | |
| 92 | // Device ID's that have been seen so far |
| 93 | private final List<DeviceId> devices = Lists.newArrayList(); |
| 94 | |
| 95 | private ExecutorService linkDriver = Executors.newFixedThreadPool(1, |
| 96 | namedThreads("null-link-driver")); |
| 97 | |
| 98 | // If true, 'flickers' links by alternating link up/down events at eventRate |
| 99 | @Property(name = "flicker", boolValue = FLICKER, |
| 100 | label = "Setting to flap links") |
| 101 | private boolean flicker = FLICKER; |
| 102 | |
| 103 | // For flicker = true, duration between events in msec. |
| 104 | @Property(name = "eventRate", intValue = DEFAULT_RATE, |
| 105 | label = "Duration between Link Event") |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 106 | private int eventRate = DEFAULT_RATE; |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 107 | |
| 108 | public NullLinkProvider() { |
| 109 | super(new ProviderId("null", "org.onosproject.provider.nil")); |
| 110 | } |
| 111 | |
| 112 | @Activate |
| 113 | public void activate(ComponentContext context) { |
| 114 | providerService = providerRegistry.register(this); |
| 115 | deviceService.addListener(linkProvider); |
| 116 | modified(context); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 117 | log.info("started"); |
| 118 | } |
| 119 | |
| 120 | @Deactivate |
| 121 | public void deactivate(ComponentContext context) { |
| 122 | if (flicker) { |
| 123 | try { |
| 124 | linkDriver.awaitTermination(1000, TimeUnit.MILLISECONDS); |
| 125 | } catch (InterruptedException e) { |
| 126 | log.error("LinkBuilder did not terminate"); |
| 127 | } |
| 128 | linkDriver.shutdownNow(); |
| 129 | } |
| 130 | deviceService.removeListener(linkProvider); |
| 131 | providerRegistry.unregister(this); |
| 132 | deviceService = null; |
| 133 | |
| 134 | log.info("stopped"); |
| 135 | } |
| 136 | |
Ayaka Koshibe | 7dc1d04 | 2015-01-21 15:28:03 -0800 | [diff] [blame] | 137 | @Modified |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 138 | public void modified(ComponentContext context) { |
| 139 | if (context == null) { |
| 140 | log.info("No configs, using defaults: flicker={}, eventRate={}", |
| 141 | FLICKER, DEFAULT_RATE); |
| 142 | return; |
| 143 | } |
| 144 | Dictionary<?, ?> properties = context.getProperties(); |
| 145 | |
| 146 | boolean flickSetting; |
| 147 | int newRate; |
| 148 | try { |
| 149 | String s = (String) properties.get("flicker"); |
| 150 | flickSetting = isNullOrEmpty(s) ? flicker : Boolean.valueOf(s); |
| 151 | s = (String) properties.get("eventRate"); |
| 152 | newRate = isNullOrEmpty(s) ? eventRate : Integer.valueOf(s); |
| 153 | } catch (Exception e) { |
| 154 | log.warn(e.getMessage()); |
| 155 | flickSetting = flicker; |
| 156 | newRate = eventRate; |
| 157 | } |
| 158 | |
| 159 | if (flicker != flickSetting) { |
| 160 | flicker = flickSetting; |
| 161 | } |
| 162 | |
| 163 | if (flicker) { |
| 164 | if (eventRate != newRate) { |
| 165 | eventRate = newRate; |
| 166 | } |
| 167 | linkDriver.submit(new LinkDriver()); |
| 168 | } |
| 169 | log.info("Using new settings: flicker={}, eventRate={}", flicker, |
| 170 | eventRate); |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Adds links as devices are found, and generates LinkEvents. |
| 175 | */ |
| 176 | private class InternalLinkProvider implements DeviceListener { |
| 177 | |
| 178 | @Override |
| 179 | public void event(DeviceEvent event) { |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 180 | Device dev = event.subject(); |
| 181 | if (!MASTER.equals(roleService.getLocalRole(dev.id()))) { |
| 182 | return; |
| 183 | } |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 184 | switch (event.type()) { |
| 185 | case DEVICE_ADDED: |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 186 | addLink(dev); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 187 | break; |
| 188 | case DEVICE_REMOVED: |
Ayaka Koshibe | 0cd4282 | 2015-01-22 16:02:31 -0800 | [diff] [blame] | 189 | removeLink(dev); |
Ayaka Koshibe | 422916f | 2015-01-15 15:30:23 -0800 | [diff] [blame] | 190 | break; |
| 191 | default: |
| 192 | break; |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | private void addLink(Device current) { |
| 197 | devices.add(current.id()); |
| 198 | // No link if only one device |
| 199 | if (devices.size() == 1) { |
| 200 | return; |
| 201 | } |
| 202 | |
| 203 | // Attach new device to the last-seen device |
| 204 | DeviceId prev = devices.get(devices.size() - 2); |
| 205 | ConnectPoint src = new ConnectPoint(prev, SRCPORT); |
| 206 | ConnectPoint dst = new ConnectPoint(current.id(), DSTPORT); |
| 207 | |
| 208 | LinkDescription fdesc = new DefaultLinkDescription(src, dst, |
| 209 | Link.Type.DIRECT); |
| 210 | LinkDescription rdesc = new DefaultLinkDescription(dst, src, |
| 211 | Link.Type.DIRECT); |
| 212 | descriptions.put(src, fdesc); |
| 213 | descriptions.put(dst, rdesc); |
| 214 | |
| 215 | providerService.linkDetected(fdesc); |
| 216 | providerService.linkDetected(rdesc); |
| 217 | } |
| 218 | |
| 219 | private void removeLink(Device device) { |
| 220 | providerService.linksVanished(device.id()); |
| 221 | devices.remove(device.id()); |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | /** |
| 226 | * Generates link events using fake links. |
| 227 | */ |
| 228 | private class LinkDriver implements Runnable { |
| 229 | |
| 230 | @Override |
| 231 | public void run() { |
| 232 | while (!linkDriver.isShutdown()) { |
| 233 | for (LinkDescription desc : descriptions.values()) { |
| 234 | providerService.linkVanished(desc); |
| 235 | delay(eventRate); |
| 236 | providerService.linkDetected(desc); |
| 237 | delay(eventRate); |
| 238 | } |
| 239 | } |
| 240 | } |
| 241 | } |
| 242 | } |