tom | 8bf2e6b | 2014-09-10 20:53:54 -0700 | [diff] [blame] | 1 | package org.onlab.onos.net.trivial.link.impl; |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 2 | |
alshabib | df652ad | 2014-09-09 11:53:19 -0700 | [diff] [blame] | 3 | import static com.google.common.base.Preconditions.checkNotNull; |
| 4 | import static org.slf4j.LoggerFactory.getLogger; |
| 5 | |
| 6 | import java.util.Set; |
| 7 | |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 8 | import org.apache.felix.scr.annotations.Activate; |
| 9 | import org.apache.felix.scr.annotations.Component; |
| 10 | import org.apache.felix.scr.annotations.Deactivate; |
tom | 5f38b3a | 2014-08-27 23:50:54 -0700 | [diff] [blame] | 11 | import org.apache.felix.scr.annotations.Reference; |
| 12 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 13 | import org.apache.felix.scr.annotations.Service; |
tom | 96dfcab | 2014-08-28 09:26:03 -0700 | [diff] [blame] | 14 | import org.onlab.onos.event.AbstractListenerRegistry; |
| 15 | import org.onlab.onos.event.EventDeliveryService; |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 16 | import org.onlab.onos.net.ConnectPoint; |
| 17 | import org.onlab.onos.net.DeviceId; |
| 18 | import org.onlab.onos.net.Link; |
| 19 | import org.onlab.onos.net.link.LinkAdminService; |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 20 | import org.onlab.onos.net.link.LinkDescription; |
tom | 5f38b3a | 2014-08-27 23:50:54 -0700 | [diff] [blame] | 21 | import org.onlab.onos.net.link.LinkEvent; |
| 22 | import org.onlab.onos.net.link.LinkListener; |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 23 | import org.onlab.onos.net.link.LinkProvider; |
tom | 96dfcab | 2014-08-28 09:26:03 -0700 | [diff] [blame] | 24 | import org.onlab.onos.net.link.LinkProviderRegistry; |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 25 | import org.onlab.onos.net.link.LinkProviderService; |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 26 | import org.onlab.onos.net.link.LinkService; |
tom | 96dfcab | 2014-08-28 09:26:03 -0700 | [diff] [blame] | 27 | import org.onlab.onos.net.provider.AbstractProviderRegistry; |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 28 | import org.onlab.onos.net.provider.AbstractProviderService; |
| 29 | import org.slf4j.Logger; |
tom | 5f38b3a | 2014-08-27 23:50:54 -0700 | [diff] [blame] | 30 | |
alshabib | df652ad | 2014-09-09 11:53:19 -0700 | [diff] [blame] | 31 | import com.google.common.collect.Sets; |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 32 | |
| 33 | /** |
| 34 | * Provides basic implementation of the link SB & NB APIs. |
| 35 | */ |
| 36 | @Component(immediate = true) |
| 37 | @Service |
tom | 5f38b3a | 2014-08-27 23:50:54 -0700 | [diff] [blame] | 38 | public class SimpleLinkManager |
tom | dc361b6 | 2014-09-09 20:36:52 -0700 | [diff] [blame] | 39 | extends AbstractProviderRegistry<LinkProvider, LinkProviderService> |
| 40 | implements LinkService, LinkAdminService, LinkProviderRegistry { |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 41 | |
| 42 | private static final String DEVICE_ID_NULL = "Device ID cannot be null"; |
| 43 | private static final String LINK_DESC_NULL = "Link description cannot be null"; |
| 44 | private static final String CONNECT_POINT_NULL = "Connection point cannot be null"; |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 45 | |
tom | 5f38b3a | 2014-08-27 23:50:54 -0700 | [diff] [blame] | 46 | private final Logger log = getLogger(getClass()); |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 47 | |
tom | 96dfcab | 2014-08-28 09:26:03 -0700 | [diff] [blame] | 48 | private final AbstractListenerRegistry<LinkEvent, LinkListener> |
tom | dc361b6 | 2014-09-09 20:36:52 -0700 | [diff] [blame] | 49 | listenerRegistry = new AbstractListenerRegistry<>(); |
tom | 5f38b3a | 2014-08-27 23:50:54 -0700 | [diff] [blame] | 50 | |
tom | 4c6606f | 2014-09-07 11:11:21 -0700 | [diff] [blame] | 51 | private final SimpleLinkStore store = new SimpleLinkStore(); |
| 52 | |
tom | 5f38b3a | 2014-08-27 23:50:54 -0700 | [diff] [blame] | 53 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
tom | 0d39526 | 2014-09-07 16:53:40 -0700 | [diff] [blame] | 54 | protected EventDeliveryService eventDispatcher; |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 55 | |
| 56 | @Activate |
| 57 | public void activate() { |
tom | 96dfcab | 2014-08-28 09:26:03 -0700 | [diff] [blame] | 58 | eventDispatcher.addSink(LinkEvent.class, listenerRegistry); |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 59 | log.info("Started"); |
| 60 | } |
| 61 | |
| 62 | @Deactivate |
| 63 | public void deactivate() { |
tom | 5f38b3a | 2014-08-27 23:50:54 -0700 | [diff] [blame] | 64 | eventDispatcher.removeSink(LinkEvent.class); |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 65 | log.info("Stopped"); |
| 66 | } |
| 67 | |
| 68 | @Override |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 69 | public int getLinkCount() { |
| 70 | return store.getLinkCount(); |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public Iterable<Link> getLinks() { |
| 75 | return store.getLinks(); |
| 76 | } |
| 77 | |
| 78 | @Override |
| 79 | public Set<Link> getDeviceLinks(DeviceId deviceId) { |
| 80 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 81 | return Sets.union(store.getDeviceEgressLinks(deviceId), |
tom | dc361b6 | 2014-09-09 20:36:52 -0700 | [diff] [blame] | 82 | store.getDeviceIngressLinks(deviceId)); |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | @Override |
| 86 | public Set<Link> getDeviceEgressLinks(DeviceId deviceId) { |
| 87 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 88 | return store.getDeviceEgressLinks(deviceId); |
| 89 | } |
| 90 | |
| 91 | @Override |
tom | d176fc4 | 2014-09-08 00:12:30 -0700 | [diff] [blame] | 92 | public Set<Link> getDeviceIngressLinks(DeviceId deviceId) { |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 93 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 94 | return store.getDeviceIngressLinks(deviceId); |
| 95 | } |
| 96 | |
| 97 | @Override |
| 98 | public Set<Link> getLinks(ConnectPoint connectPoint) { |
| 99 | checkNotNull(connectPoint, CONNECT_POINT_NULL); |
| 100 | return Sets.union(store.getEgressLinks(connectPoint), |
tom | dc361b6 | 2014-09-09 20:36:52 -0700 | [diff] [blame] | 101 | store.getIngressLinks(connectPoint)); |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | @Override |
| 105 | public Set<Link> getEgressLinks(ConnectPoint connectPoint) { |
| 106 | checkNotNull(connectPoint, CONNECT_POINT_NULL); |
| 107 | return store.getEgressLinks(connectPoint); |
| 108 | } |
| 109 | |
| 110 | @Override |
tom | d176fc4 | 2014-09-08 00:12:30 -0700 | [diff] [blame] | 111 | public Set<Link> getIngressLinks(ConnectPoint connectPoint) { |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 112 | checkNotNull(connectPoint, CONNECT_POINT_NULL); |
| 113 | return store.getIngressLinks(connectPoint); |
| 114 | } |
| 115 | |
| 116 | @Override |
tom | d176fc4 | 2014-09-08 00:12:30 -0700 | [diff] [blame] | 117 | public Link getLink(ConnectPoint src, ConnectPoint dst) { |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 118 | checkNotNull(src, CONNECT_POINT_NULL); |
| 119 | checkNotNull(dst, CONNECT_POINT_NULL); |
tom | d176fc4 | 2014-09-08 00:12:30 -0700 | [diff] [blame] | 120 | return store.getLink(src, dst); |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | @Override |
| 124 | public void removeLinks(ConnectPoint connectPoint) { |
| 125 | removeLinks(getLinks(connectPoint)); |
| 126 | } |
| 127 | |
| 128 | @Override |
| 129 | public void removeLinks(DeviceId deviceId) { |
| 130 | removeLinks(getDeviceLinks(deviceId)); |
| 131 | } |
| 132 | |
| 133 | @Override |
| 134 | public void addListener(LinkListener listener) { |
| 135 | listenerRegistry.addListener(listener); |
| 136 | } |
| 137 | |
| 138 | @Override |
| 139 | public void removeListener(LinkListener listener) { |
| 140 | listenerRegistry.removeListener(listener); |
| 141 | } |
| 142 | |
tom | 7869ad9 | 2014-09-09 14:32:08 -0700 | [diff] [blame] | 143 | @Override |
| 144 | protected LinkProviderService createProviderService(LinkProvider provider) { |
| 145 | return new InternalLinkProviderService(provider); |
| 146 | } |
| 147 | |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 148 | // Personalized link provider service issued to the supplied provider. |
tom | dc361b6 | 2014-09-09 20:36:52 -0700 | [diff] [blame] | 149 | private class InternalLinkProviderService |
| 150 | extends AbstractProviderService<LinkProvider> |
| 151 | implements LinkProviderService { |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 152 | |
tom | cfde062 | 2014-09-09 11:02:42 -0700 | [diff] [blame] | 153 | InternalLinkProviderService(LinkProvider provider) { |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 154 | super(provider); |
| 155 | } |
| 156 | |
| 157 | @Override |
| 158 | public void linkDetected(LinkDescription linkDescription) { |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 159 | checkNotNull(linkDescription, LINK_DESC_NULL); |
| 160 | checkValidity(); |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 161 | LinkEvent event = store.createOrUpdateLink(provider().id(), |
tom | dc361b6 | 2014-09-09 20:36:52 -0700 | [diff] [blame] | 162 | linkDescription); |
| 163 | if (event != null) { |
| 164 | log.debug("Link {} detected", linkDescription); |
| 165 | post(event); |
| 166 | } |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | @Override |
| 170 | public void linkVanished(LinkDescription linkDescription) { |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 171 | checkNotNull(linkDescription, LINK_DESC_NULL); |
| 172 | checkValidity(); |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 173 | LinkEvent event = store.removeLink(linkDescription.src(), |
tom | dc361b6 | 2014-09-09 20:36:52 -0700 | [diff] [blame] | 174 | linkDescription.dst()); |
| 175 | if (event != null) { |
| 176 | log.info("Link {} vanished", linkDescription); |
| 177 | post(event); |
| 178 | } |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | @Override |
| 182 | public void linksVanished(ConnectPoint connectPoint) { |
| 183 | checkNotNull(connectPoint, "Connect point cannot be null"); |
| 184 | checkValidity(); |
tom | dc361b6 | 2014-09-09 20:36:52 -0700 | [diff] [blame] | 185 | log.info("Links for connection point {} vanished", connectPoint); |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 186 | removeLinks(getLinks(connectPoint)); |
| 187 | } |
| 188 | |
| 189 | @Override |
| 190 | public void linksVanished(DeviceId deviceId) { |
| 191 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 192 | checkValidity(); |
tom | dc361b6 | 2014-09-09 20:36:52 -0700 | [diff] [blame] | 193 | log.info("Links for device {} vanished", deviceId); |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 194 | removeLinks(getDeviceLinks(deviceId)); |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 195 | } |
| 196 | } |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 197 | |
| 198 | // Removes all links in the specified set and emits appropriate events. |
| 199 | private void removeLinks(Set<Link> links) { |
| 200 | for (Link link : links) { |
| 201 | LinkEvent event = store.removeLink(link.src(), link.dst()); |
| 202 | post(event); |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | // Posts the specified event to the local event dispatcher. |
| 207 | private void post(LinkEvent event) { |
tom | dc361b6 | 2014-09-09 20:36:52 -0700 | [diff] [blame] | 208 | if (event != null) { |
tom | eadbb46 | 2014-09-07 16:10:19 -0700 | [diff] [blame] | 209 | eventDispatcher.post(event); |
| 210 | } |
| 211 | } |
| 212 | |
tom | db0d03f | 2014-08-27 16:34:15 -0700 | [diff] [blame] | 213 | } |