Aaron Kruglikov | a2b5915 | 2015-06-24 14:01:41 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 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 | |
| 17 | |
| 18 | package org.onosproject.net.edgeservice.impl; |
| 19 | |
| 20 | import com.google.common.collect.ImmutableSet; |
| 21 | import com.google.common.collect.Maps; |
| 22 | import com.google.common.collect.Sets; |
| 23 | import org.apache.felix.scr.annotations.Activate; |
| 24 | import org.apache.felix.scr.annotations.Component; |
| 25 | import org.apache.felix.scr.annotations.Deactivate; |
| 26 | import org.apache.felix.scr.annotations.Reference; |
| 27 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 28 | import org.apache.felix.scr.annotations.Service; |
| 29 | import org.onosproject.event.Event; |
| 30 | import org.onosproject.event.EventDeliveryService; |
| 31 | import org.onosproject.event.ListenerRegistry; |
| 32 | import org.onosproject.net.ConnectPoint; |
| 33 | import org.onosproject.net.DeviceId; |
| 34 | import org.onosproject.net.device.DeviceEvent; |
| 35 | import org.onosproject.net.device.DeviceService; |
| 36 | import org.onosproject.net.edge.EdgePortEvent; |
| 37 | import org.onosproject.net.edge.EdgePortListener; |
| 38 | import org.onosproject.net.edge.EdgePortService; |
| 39 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 40 | import org.onosproject.net.flow.TrafficTreatment; |
| 41 | import org.onosproject.net.link.LinkEvent; |
| 42 | import org.onosproject.net.packet.DefaultOutboundPacket; |
| 43 | import org.onosproject.net.packet.OutboundPacket; |
| 44 | import org.onosproject.net.packet.PacketService; |
| 45 | import org.onosproject.net.topology.Topology; |
| 46 | import org.onosproject.net.topology.TopologyEvent; |
| 47 | import org.onosproject.net.topology.TopologyListener; |
| 48 | import org.onosproject.net.topology.TopologyService; |
| 49 | import org.slf4j.Logger; |
| 50 | |
| 51 | import java.nio.ByteBuffer; |
| 52 | import java.util.List; |
| 53 | import java.util.Map; |
| 54 | import java.util.Optional; |
| 55 | import java.util.Set; |
| 56 | |
| 57 | import static org.onosproject.net.edge.EdgePortEvent.Type.EDGE_PORT_ADDED; |
| 58 | import static org.onosproject.net.edge.EdgePortEvent.Type.EDGE_PORT_REMOVED; |
| 59 | import static org.slf4j.LoggerFactory.getLogger; |
| 60 | |
| 61 | /** |
| 62 | * This is an implementation of the edge net service. |
| 63 | */ |
| 64 | @Component(immediate = true) |
| 65 | @Service |
| 66 | public class EdgeManager implements EdgePortService { |
| 67 | |
| 68 | private final ListenerRegistry<EdgePortEvent, EdgePortListener> |
| 69 | listenerRegistry = new ListenerRegistry<>(); |
| 70 | |
| 71 | private final Logger log = getLogger(getClass()); |
| 72 | |
| 73 | private Topology topology; |
| 74 | |
| 75 | private final TopologyListener topologyListener = new InnerTopologyListener(); |
| 76 | |
| 77 | private final Map<DeviceId, Set<ConnectPoint>> connectionPoints = Maps.newConcurrentMap(); |
| 78 | |
| 79 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 80 | protected EventDeliveryService eventDispatcher; |
| 81 | |
| 82 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 83 | protected PacketService packetService; |
| 84 | |
| 85 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 86 | protected DeviceService deviceService; |
| 87 | |
| 88 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 89 | protected TopologyService topologyService; |
| 90 | |
| 91 | @Activate |
| 92 | public void activate() { |
| 93 | eventDispatcher.addSink(EdgePortEvent.class, listenerRegistry); |
| 94 | topologyService.addListener(topologyListener); |
| 95 | log.info("Started"); |
| 96 | } |
| 97 | |
| 98 | @Deactivate |
| 99 | public void deactivate() { |
| 100 | eventDispatcher.removeSink(EdgePortEvent.class); |
| 101 | topologyService.removeListener(topologyListener); |
| 102 | log.info("Stopped"); |
| 103 | } |
| 104 | |
| 105 | public boolean isEdgePoint(ConnectPoint point) { |
| 106 | return !topologyService.isInfrastructure(topologyService.currentTopology(), point); |
| 107 | } |
| 108 | |
| 109 | public Iterable<ConnectPoint> getEdgePoints() { |
| 110 | //TODO if this is called before any notifications need to populate structure |
| 111 | ImmutableSet.Builder<ConnectPoint> builder = ImmutableSet.builder(); |
| 112 | connectionPoints.forEach((k, v) -> v.forEach(builder::add)); |
| 113 | return builder.build(); |
| 114 | } |
| 115 | |
| 116 | public Iterable<ConnectPoint> getEdgePoints(DeviceId deviceId) { |
| 117 | //TODO if this is called before any notifications need to populate structure |
| 118 | ImmutableSet.Builder<ConnectPoint> builder = ImmutableSet.builder(); |
| 119 | Set<ConnectPoint> set = connectionPoints.get(deviceId); |
| 120 | if (set != null) { |
| 121 | set.forEach(builder::add); |
| 122 | } |
| 123 | return builder.build(); |
| 124 | } |
| 125 | |
| 126 | public void emitPacket(ByteBuffer data, Optional<TrafficTreatment> treatment) { |
| 127 | TrafficTreatment.Builder builder = treatment.isPresent() ? |
| 128 | DefaultTrafficTreatment.builder(treatment.get()) : |
| 129 | DefaultTrafficTreatment.builder(); |
| 130 | getEdgePoints().forEach(p -> packetService.emit(packet(builder, p, data))); |
| 131 | } |
| 132 | |
| 133 | public void emitPacket(DeviceId deviceId, ByteBuffer data, |
| 134 | Optional<TrafficTreatment> treatment) { |
| 135 | TrafficTreatment.Builder builder = treatment.isPresent() ? |
| 136 | DefaultTrafficTreatment.builder(treatment.get()) : |
| 137 | DefaultTrafficTreatment.builder(); |
| 138 | getEdgePoints(deviceId).forEach(p -> packetService.emit(packet(builder, p, data))); |
| 139 | |
| 140 | } |
| 141 | |
| 142 | private OutboundPacket packet(TrafficTreatment.Builder builder, ConnectPoint point, ByteBuffer data) { |
| 143 | builder.setOutput(point.port()); |
| 144 | return new DefaultOutboundPacket(point.deviceId(), builder.build(), data); |
| 145 | } |
| 146 | |
| 147 | public void addListener(EdgePortListener listener) { |
| 148 | listenerRegistry.addListener(listener); |
| 149 | } |
| 150 | |
| 151 | public void removeListener(EdgePortListener listener) { |
| 152 | listenerRegistry.removeListener(listener); |
| 153 | } |
| 154 | |
| 155 | |
| 156 | private class InnerTopologyListener implements TopologyListener { |
| 157 | @Override |
| 158 | public void event(TopologyEvent event) { |
| 159 | topology = event.subject(); |
| 160 | List<Event> triggers = event.reasons(); |
| 161 | if (triggers != null) { |
| 162 | triggers.forEach(reason -> { |
| 163 | if (reason instanceof DeviceEvent) { |
| 164 | //TODO spuriously catches events not handled in the handler method |
| 165 | processDeviceEvent((DeviceEvent) reason); |
| 166 | } else if (reason instanceof LinkEvent) { |
| 167 | processLinkEvent((LinkEvent) reason); |
| 168 | } else { |
| 169 | System.out.println(reason.toString()); |
| 170 | } |
| 171 | }); |
| 172 | } else { |
| 173 | loadAllEdgePorts(); |
| 174 | } |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | |
| 179 | private void loadAllEdgePorts() { |
| 180 | deviceService.getDevices().forEach(d -> deviceService.getPorts(d.id()) |
| 181 | .forEach(p -> addEdgePort(new ConnectPoint(d.id(), p.number())))); |
| 182 | } |
| 183 | |
| 184 | private void processLinkEvent(LinkEvent event) { |
| 185 | if (event.type() == LinkEvent.Type.LINK_ADDED) { |
| 186 | removeEdgePort(event.subject().src()); |
| 187 | removeEdgePort(event.subject().dst()); |
| 188 | } else if (event.type() == LinkEvent.Type.LINK_REMOVED) { |
| 189 | addEdgePort(event.subject().src()); |
| 190 | addEdgePort(event.subject().dst()); |
| 191 | } |
| 192 | |
| 193 | } |
| 194 | |
| 195 | private void processDeviceEvent(DeviceEvent event) { |
| 196 | |
| 197 | if (event.type() == DeviceEvent.Type.PORT_ADDED) { |
| 198 | addEdgePort(new ConnectPoint(event.subject().id(), event.port().number())); |
| 199 | } else if (event.type() == DeviceEvent.Type.PORT_REMOVED) { |
| 200 | removeEdgePort(new ConnectPoint(event.subject().id(), event.port().number())); |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | private void addEdgePort(ConnectPoint point) { |
| 205 | //TODO case of link removed and one of the end ports removed in same topo cycle |
| 206 | //TODO pt2. resulting behavior will be adding a non-existent edge to the set |
| 207 | if (!topologyService.isInfrastructure(topology, point)) { |
| 208 | Set<ConnectPoint> set = connectionPoints.get(point.deviceId()); |
| 209 | if (set == null) { |
| 210 | set = Sets.newConcurrentHashSet(); |
| 211 | connectionPoints.put(point.deviceId(), set); |
| 212 | } |
| 213 | if (set.add(point)) { |
| 214 | eventDispatcher.post(new EdgePortEvent(EDGE_PORT_ADDED, point)); |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | } |
| 219 | |
| 220 | private void removeEdgePort(ConnectPoint point) { |
| 221 | //TODO need to check that points still exist IE when a link and port are removed |
| 222 | //TODO pt2 and both events are captures in the same topo update |
| 223 | if (!topologyService.isInfrastructure(topology, point)) { |
| 224 | Set<ConnectPoint> set = connectionPoints.get(point.deviceId()); |
| 225 | if (set == null) { |
| 226 | return; |
| 227 | } |
| 228 | if (set.remove(point)) { |
| 229 | eventDispatcher.post(new EdgePortEvent(EDGE_PORT_REMOVED, point)); |
| 230 | } |
| 231 | if (set.isEmpty()) { |
| 232 | connectionPoints.remove(point.deviceId()); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | } |
| 237 | } |