Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-present 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.pce.pceservice; |
| 17 | |
| 18 | import static com.google.common.base.Preconditions.checkNotNull; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 19 | |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 20 | import java.util.Collection; |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 21 | import java.util.Collections; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 22 | import java.util.Iterator; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 23 | import java.util.LinkedList; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 24 | import java.util.List; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 25 | import java.util.Map; |
| 26 | import java.util.Optional; |
| 27 | import java.util.Map.Entry; |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 28 | import java.util.Set; |
Priyanka B | 9fa4ed3 | 2016-05-27 11:59:24 +0530 | [diff] [blame^] | 29 | import java.util.concurrent.Executors; |
| 30 | import java.util.concurrent.ScheduledExecutorService; |
| 31 | import java.util.concurrent.TimeUnit; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 32 | |
| 33 | import org.apache.felix.scr.annotations.Activate; |
| 34 | import org.apache.felix.scr.annotations.Component; |
| 35 | import org.apache.felix.scr.annotations.Deactivate; |
| 36 | import org.apache.felix.scr.annotations.Reference; |
| 37 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 38 | import org.apache.felix.scr.annotations.Service; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 39 | import org.onlab.packet.IpAddress; |
| 40 | import org.onlab.packet.IpPrefix; |
| 41 | import org.onlab.util.Bandwidth; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 42 | import org.onosproject.core.ApplicationId; |
| 43 | import org.onosproject.core.CoreService; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 44 | import org.onosproject.incubator.net.resource.label.LabelResourceAdminService; |
| 45 | import org.onosproject.incubator.net.resource.label.LabelResourceId; |
| 46 | import org.onosproject.incubator.net.resource.label.LabelResourceService; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 47 | import org.onosproject.core.IdGenerator; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 48 | import org.onosproject.incubator.net.tunnel.DefaultTunnel; |
| 49 | import org.onosproject.incubator.net.tunnel.IpTunnelEndPoint; |
| 50 | import org.onosproject.incubator.net.tunnel.LabelStack; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 51 | import org.onosproject.incubator.net.tunnel.Tunnel; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 52 | import org.onosproject.incubator.net.tunnel.TunnelEndPoint; |
| 53 | import org.onosproject.incubator.net.tunnel.TunnelEvent; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 54 | import org.onosproject.incubator.net.tunnel.TunnelId; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 55 | import org.onosproject.incubator.net.tunnel.TunnelListener; |
| 56 | import org.onosproject.incubator.net.tunnel.TunnelName; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 57 | import org.onosproject.incubator.net.tunnel.TunnelService; |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 58 | import org.onosproject.mastership.MastershipService; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 59 | import org.onosproject.net.DefaultAnnotations; |
| 60 | import org.onosproject.net.DefaultAnnotations.Builder; |
| 61 | import org.onosproject.net.Device; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 62 | import org.onosproject.net.DeviceId; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 63 | import org.onosproject.net.Link; |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 64 | import org.onosproject.net.Path; |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 65 | import org.onosproject.net.device.DeviceService; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 66 | import org.onosproject.net.flowobjective.FlowObjectiveService; |
| 67 | import org.onosproject.net.flowobjective.Objective; |
| 68 | import org.onosproject.net.intent.Constraint; |
| 69 | import org.onosproject.net.intent.constraint.BandwidthConstraint; |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 70 | import org.onosproject.net.link.LinkEvent; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 71 | import org.onosproject.pce.pceservice.constraint.CapabilityConstraint; |
| 72 | import org.onosproject.pce.pceservice.constraint.CapabilityConstraint.CapabilityType; |
| 73 | import org.onosproject.pce.pceservice.constraint.CostConstraint; |
| 74 | import org.onosproject.pce.pceservice.constraint.SharedBandwidthConstraint; |
| 75 | import org.onosproject.net.resource.Resource; |
| 76 | import org.onosproject.net.resource.ResourceAllocation; |
| 77 | import org.onosproject.net.resource.ResourceConsumer; |
| 78 | import org.onosproject.net.resource.ResourceQueryService; |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 79 | import org.onosproject.net.resource.ResourceService; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 80 | import org.onosproject.net.resource.Resources; |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 81 | import org.onosproject.net.topology.LinkWeight; |
| 82 | import org.onosproject.net.topology.PathService; |
| 83 | import org.onosproject.net.topology.TopologyEdge; |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 84 | import org.onosproject.net.topology.TopologyEvent; |
| 85 | import org.onosproject.net.topology.TopologyListener; |
| 86 | import org.onosproject.net.topology.TopologyService; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 87 | import org.onosproject.pce.pceservice.api.PceService; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 88 | import org.onosproject.pce.pcestore.PcePathInfo; |
| 89 | import org.onosproject.pce.pcestore.PceccTunnelInfo; |
| 90 | import org.onosproject.pce.pcestore.api.PceStore; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 91 | import org.onosproject.store.serializers.KryoNamespaces; |
| 92 | import org.onosproject.store.service.DistributedSet; |
| 93 | import org.onosproject.store.service.Serializer; |
| 94 | import org.onosproject.store.service.StorageService; |
| 95 | import org.slf4j.Logger; |
| 96 | import org.slf4j.LoggerFactory; |
| 97 | |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 98 | import com.google.common.collect.ImmutableList; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 99 | import com.google.common.collect.ImmutableSet; |
| 100 | |
| 101 | import static org.onosproject.incubator.net.tunnel.Tunnel.Type.MPLS; |
| 102 | import static org.onosproject.incubator.net.tunnel.Tunnel.State.INIT; |
| 103 | import static org.onosproject.incubator.net.tunnel.Tunnel.State.ESTABLISHED; |
| 104 | import static org.onosproject.incubator.net.tunnel.Tunnel.State.UNSTABLE; |
| 105 | import static org.onosproject.pce.pceservice.LspType.WITH_SIGNALLING; |
| 106 | import static org.onosproject.pce.pceservice.LspType.SR_WITHOUT_SIGNALLING; |
| 107 | import static org.onosproject.pce.pceservice.LspType.WITHOUT_SIGNALLING_AND_WITHOUT_SR; |
| 108 | |
| 109 | import static org.onosproject.pce.pceservice.PcepAnnotationKeys.BANDWIDTH; |
| 110 | import static org.onosproject.pce.pceservice.PcepAnnotationKeys.LOCAL_LSP_ID; |
| 111 | import static org.onosproject.pce.pceservice.PcepAnnotationKeys.LSP_SIG_TYPE; |
| 112 | import static org.onosproject.pce.pceservice.PcepAnnotationKeys.PCE_INIT; |
| 113 | import static org.onosproject.pce.pceservice.PcepAnnotationKeys.PLSP_ID; |
| 114 | import static org.onosproject.pce.pceservice.PcepAnnotationKeys.PCC_TUNNEL_ID; |
| 115 | import static org.onosproject.pce.pceservice.PcepAnnotationKeys.DELEGATE; |
| 116 | import static org.onosproject.pce.pceservice.PcepAnnotationKeys.COST_TYPE; |
| 117 | |
| 118 | import org.onosproject.net.packet.InboundPacket; |
| 119 | import org.onosproject.net.packet.PacketContext; |
| 120 | import org.onosproject.net.packet.PacketProcessor; |
| 121 | import org.onosproject.net.packet.PacketService; |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 122 | |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 123 | /** |
| 124 | * Implementation of PCE service. |
| 125 | */ |
| 126 | @Component(immediate = true) |
| 127 | @Service |
| 128 | public class PceManager implements PceService { |
| 129 | private static final Logger log = LoggerFactory.getLogger(PceManager.class); |
| 130 | |
| 131 | public static final String PCE_SERVICE_APP = "org.onosproject.pce"; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 132 | private static final String LOCAL_LSP_ID_GEN_TOPIC = "pcep-local-lsp-id"; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 133 | private static final int PREFIX_LENGTH = 32; |
| 134 | |
| 135 | private static final String TUNNEL_CONSUMER_ID_GEN_TOPIC = "pcep-tunnel-consumer-id"; |
| 136 | private IdGenerator tunnelConsumerIdGen; |
| 137 | |
| 138 | private static final String LSRID = "lsrId"; |
| 139 | private static final String TRUE = "true"; |
| 140 | private static final String FALSE = "false"; |
| 141 | private static final String END_OF_SYNC_IP_PREFIX = "0.0.0.0/32"; |
| 142 | |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 143 | private IdGenerator localLspIdIdGen; |
| 144 | protected DistributedSet<Short> localLspIdFreeList; |
| 145 | |
| 146 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 147 | protected CoreService coreService; |
| 148 | |
| 149 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 150 | protected ResourceService resourceService; |
| 151 | |
| 152 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 153 | protected ResourceQueryService resourceQueryService; |
| 154 | |
| 155 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 156 | protected PathService pathService; |
| 157 | |
| 158 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 159 | protected PceStore pceStore; |
| 160 | |
| 161 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 162 | protected TunnelService tunnelService; |
| 163 | |
| 164 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 165 | protected StorageService storageService; |
| 166 | |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 167 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 168 | protected PacketService packetService; |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 169 | |
| 170 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 171 | protected DeviceService deviceService; |
| 172 | |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 173 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 174 | protected LabelResourceAdminService labelRsrcAdminService; |
| 175 | |
| 176 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 177 | protected LabelResourceService labelRsrcService; |
| 178 | |
| 179 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 180 | protected FlowObjectiveService flowObjectiveService; |
| 181 | |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 182 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 183 | protected MastershipService mastershipService; |
| 184 | |
| 185 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 186 | protected TopologyService topologyService; |
| 187 | |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 188 | private TunnelListener listener = new InnerTunnelListener(); |
| 189 | private BasicPceccHandler crHandler; |
| 190 | private PceccSrTeBeHandler srTeHandler; |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 191 | private ApplicationId appId; |
| 192 | |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 193 | private final PcepPacketProcessor processor = new PcepPacketProcessor(); |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 194 | private final TopologyListener topologyListener = new InternalTopologyListener(); |
Priyanka B | 9fa4ed3 | 2016-05-27 11:59:24 +0530 | [diff] [blame^] | 195 | private ScheduledExecutorService executor; |
| 196 | |
| 197 | public static final int INITIAL_DELAY = 30; |
| 198 | public static final int PERIODIC_DELAY = 30; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 199 | |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 200 | /** |
| 201 | * Creates new instance of PceManager. |
| 202 | */ |
| 203 | public PceManager() { |
| 204 | } |
| 205 | |
| 206 | @Activate |
| 207 | protected void activate() { |
| 208 | appId = coreService.registerApplication(PCE_SERVICE_APP); |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 209 | crHandler = BasicPceccHandler.getInstance(); |
| 210 | crHandler.initialize(labelRsrcService, flowObjectiveService, appId, pceStore); |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 211 | |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 212 | srTeHandler = PceccSrTeBeHandler.getInstance(); |
| 213 | srTeHandler.initialize(labelRsrcAdminService, labelRsrcService, flowObjectiveService, appId, pceStore); |
| 214 | |
| 215 | tunnelService.addListener(listener); |
| 216 | |
| 217 | tunnelConsumerIdGen = coreService.getIdGenerator(TUNNEL_CONSUMER_ID_GEN_TOPIC); |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 218 | localLspIdIdGen = coreService.getIdGenerator(LOCAL_LSP_ID_GEN_TOPIC); |
| 219 | localLspIdFreeList = storageService.<Short>setBuilder() |
| 220 | .withName("pcepLocalLspIdDeletedList") |
| 221 | .withSerializer(Serializer.using(KryoNamespaces.API)) |
| 222 | .build() |
| 223 | .asDistributedSet(); |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 224 | |
| 225 | packetService.addProcessor(processor, PacketProcessor.director(4)); |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 226 | topologyService.addListener(topologyListener); |
Priyanka B | 9fa4ed3 | 2016-05-27 11:59:24 +0530 | [diff] [blame^] | 227 | executor = Executors.newSingleThreadScheduledExecutor(); |
| 228 | //Start a timer when the component is up, with initial delay of 30min and periodic delays at 30min |
| 229 | executor.scheduleAtFixedRate(new GlobalOptimizationTimer(), INITIAL_DELAY, PERIODIC_DELAY, TimeUnit.MINUTES); |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 230 | log.info("Started"); |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 231 | } |
| 232 | |
| 233 | @Deactivate |
| 234 | protected void deactivate() { |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 235 | tunnelService.removeListener(listener); |
| 236 | packetService.removeProcessor(processor); |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 237 | topologyService.removeListener(topologyListener); |
Priyanka B | 9fa4ed3 | 2016-05-27 11:59:24 +0530 | [diff] [blame^] | 238 | //Shutdown the thread when component is deactivated |
| 239 | executor.shutdown(); |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 240 | log.info("Stopped"); |
| 241 | } |
| 242 | |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 243 | /** |
| 244 | * Returns an edge-weight capable of evaluating links on the basis of the |
| 245 | * specified constraints. |
| 246 | * |
| 247 | * @param constraints path constraints |
| 248 | * @return edge-weight function |
| 249 | */ |
| 250 | private LinkWeight weight(List<Constraint> constraints) { |
| 251 | return new TeConstraintBasedLinkWeight(constraints); |
| 252 | } |
| 253 | |
| 254 | /** |
| 255 | * Computes a path between two devices. |
| 256 | * |
| 257 | * @param src ingress device |
| 258 | * @param dst egress device |
| 259 | * @param constraints path constraints |
| 260 | * @return computed path based on constraints |
| 261 | */ |
| 262 | protected Set<Path> computePath(DeviceId src, DeviceId dst, List<Constraint> constraints) { |
| 263 | if (pathService == null) { |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 264 | return ImmutableSet.of(); |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 265 | } |
| 266 | Set<Path> paths = pathService.getPaths(src, dst, weight(constraints)); |
| 267 | if (!paths.isEmpty()) { |
| 268 | return paths; |
| 269 | } |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 270 | return ImmutableSet.of(); |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 271 | } |
| 272 | |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 273 | //[TODO:] handle requests in queue |
| 274 | @Override |
| 275 | public boolean setupPath(DeviceId src, DeviceId dst, String tunnelName, List<Constraint> constraints, |
| 276 | LspType lspType) { |
| 277 | checkNotNull(src); |
| 278 | checkNotNull(dst); |
| 279 | checkNotNull(tunnelName); |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 280 | checkNotNull(lspType); |
| 281 | |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 282 | // Convert from DeviceId to TunnelEndPoint |
| 283 | Device srcDevice = deviceService.getDevice(src); |
| 284 | Device dstDevice = deviceService.getDevice(dst); |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 285 | |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 286 | if (srcDevice == null || dstDevice == null) { |
| 287 | // Device is not known. |
| 288 | pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| 289 | return false; |
| 290 | } |
| 291 | |
| 292 | // In future projections instead of annotations will be used to fetch LSR ID. |
| 293 | String srcLsrId = srcDevice.annotations().value(LSRID); |
| 294 | String dstLsrId = dstDevice.annotations().value(LSRID); |
| 295 | |
| 296 | if (srcLsrId == null || dstLsrId == null) { |
| 297 | // LSR id is not known. |
| 298 | pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| 299 | return false; |
| 300 | } |
| 301 | |
| 302 | TunnelEndPoint srcEndPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(srcLsrId)); |
| 303 | TunnelEndPoint dstEndPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(dstLsrId)); |
| 304 | |
| 305 | double bwConstraintValue = 0; |
| 306 | CostConstraint costConstraint = null; |
| 307 | if (constraints != null) { |
| 308 | constraints.add(CapabilityConstraint.of(CapabilityType.valueOf(lspType.name()))); |
| 309 | Iterator<Constraint> iterator = constraints.iterator(); |
| 310 | |
| 311 | while (iterator.hasNext()) { |
| 312 | Constraint constraint = iterator.next(); |
| 313 | if (constraint instanceof BandwidthConstraint) { |
| 314 | bwConstraintValue = ((BandwidthConstraint) constraint).bandwidth().bps(); |
| 315 | } else if (constraint instanceof CostConstraint) { |
| 316 | costConstraint = (CostConstraint) constraint; |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | /* |
| 321 | * Add cost at the end of the list of constraints. The path computation algorithm also computes cumulative |
| 322 | * cost. The function which checks the limiting/capability constraints also returns per link cost. This |
| 323 | * function can either return the result of limiting/capability constraint validation or the value of link |
| 324 | * cost, depending upon what is the last constraint in the loop. |
| 325 | */ |
| 326 | if (costConstraint != null) { |
| 327 | constraints.remove(costConstraint); |
| 328 | constraints.add(costConstraint); |
| 329 | } |
| 330 | } else { |
| 331 | constraints = new LinkedList<>(); |
| 332 | constraints.add(CapabilityConstraint.of(CapabilityType.valueOf(lspType.name()))); |
| 333 | } |
| 334 | |
| 335 | Set<Path> computedPathSet = computePath(src, dst, constraints); |
| 336 | |
| 337 | // NO-PATH |
| 338 | if (computedPathSet.isEmpty()) { |
| 339 | pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| 340 | return false; |
| 341 | } |
| 342 | |
| 343 | Builder annotationBuilder = DefaultAnnotations.builder(); |
| 344 | if (bwConstraintValue != 0) { |
| 345 | annotationBuilder.set(BANDWIDTH, String.valueOf(bwConstraintValue)); |
| 346 | } |
| 347 | if (costConstraint != null) { |
| 348 | annotationBuilder.set(COST_TYPE, String.valueOf(costConstraint.type())); |
| 349 | } |
| 350 | annotationBuilder.set(LSP_SIG_TYPE, lspType.name()); |
| 351 | annotationBuilder.set(PCE_INIT, TRUE); |
| 352 | annotationBuilder.set(DELEGATE, TRUE); |
| 353 | |
| 354 | Path computedPath = computedPathSet.iterator().next(); |
| 355 | LabelStack labelStack = null; |
| 356 | |
| 357 | if (lspType == SR_WITHOUT_SIGNALLING) { |
| 358 | labelStack = srTeHandler.computeLabelStack(computedPath); |
| 359 | // Failed to form a label stack. |
| 360 | if (labelStack == null) { |
| 361 | pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| 362 | return false; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | if (lspType != WITH_SIGNALLING) { |
| 367 | /* |
| 368 | * Local LSP id which is assigned by RSVP for RSVP signalled LSPs, will be assigned by |
| 369 | * PCE for non-RSVP signalled LSPs. |
| 370 | */ |
| 371 | annotationBuilder.set(LOCAL_LSP_ID, String.valueOf(getNextLocalLspId())); |
| 372 | } |
| 373 | |
| 374 | // For SR-TE tunnels, call SR manager for label stack and put it inside tunnel. |
| 375 | Tunnel tunnel = new DefaultTunnel(null, srcEndPoint, dstEndPoint, MPLS, INIT, null, null, |
| 376 | TunnelName.tunnelName(tunnelName), computedPath, |
| 377 | labelStack, annotationBuilder.build()); |
| 378 | |
| 379 | // Allocate bandwidth. |
| 380 | TunnelConsumerId consumerId = null; |
| 381 | if (bwConstraintValue != 0) { |
| 382 | consumerId = reserveBandwidth(computedPath, bwConstraintValue, null); |
| 383 | if (consumerId == null) { |
| 384 | pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| 385 | return false; |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | TunnelId tunnelId = tunnelService.setupTunnel(appId, src, tunnel, computedPath); |
| 390 | if (tunnelId == null) { |
| 391 | pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| 392 | if (consumerId != null) { |
| 393 | resourceService.release(consumerId); |
| 394 | } |
| 395 | return false; |
| 396 | } |
| 397 | |
| 398 | if (consumerId != null) { |
| 399 | // Store tunnel consumer id in LSP-Label store. |
| 400 | PceccTunnelInfo pceccTunnelInfo = new PceccTunnelInfo(null, consumerId); |
| 401 | pceStore.addTunnelInfo(tunnelId, pceccTunnelInfo); |
| 402 | } |
| 403 | return true; |
| 404 | } |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 405 | |
| 406 | @Override |
| 407 | public boolean updatePath(TunnelId tunnelId, List<Constraint> constraints) { |
| 408 | checkNotNull(tunnelId); |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 409 | Set<Path> computedPathSet = null; |
| 410 | Tunnel tunnel = tunnelService.queryTunnel(tunnelId); |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 411 | |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 412 | if (tunnel == null) { |
| 413 | return false; |
| 414 | } |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 415 | |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 416 | if (tunnel.type() != MPLS || FALSE.equalsIgnoreCase(tunnel.annotations().value(DELEGATE))) { |
| 417 | // Only delegated LSPs can be updated. |
| 418 | return false; |
| 419 | } |
| 420 | |
| 421 | List<Link> links = tunnel.path().links(); |
| 422 | String lspSigType = tunnel.annotations().value(LSP_SIG_TYPE); |
| 423 | double bwConstraintValue = 0; |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 424 | String costType = null; |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 425 | SharedBandwidthConstraint shBwConstraint = null; |
| 426 | BandwidthConstraint bwConstraint = null; |
| 427 | CostConstraint costConstraint = null; |
| 428 | |
| 429 | if (constraints != null) { |
| 430 | // Call path computation in shared bandwidth mode. |
| 431 | Iterator<Constraint> iterator = constraints.iterator(); |
| 432 | while (iterator.hasNext()) { |
| 433 | Constraint constraint = iterator.next(); |
| 434 | if (constraint instanceof BandwidthConstraint) { |
| 435 | bwConstraint = (BandwidthConstraint) constraint; |
| 436 | bwConstraintValue = bwConstraint.bandwidth().bps(); |
| 437 | } else if (constraint instanceof CostConstraint) { |
| 438 | costConstraint = (CostConstraint) constraint; |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 439 | costType = costConstraint.type().name(); |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 440 | } |
| 441 | } |
| 442 | |
| 443 | // Remove and keep the cost constraint at the end of the list of constraints. |
| 444 | if (costConstraint != null) { |
| 445 | constraints.remove(costConstraint); |
| 446 | } |
| 447 | |
| 448 | Bandwidth existingBwValue = null; |
| 449 | String existingBwAnnotation = tunnel.annotations().value(BANDWIDTH); |
| 450 | if (existingBwAnnotation != null) { |
| 451 | existingBwValue = Bandwidth.bps(Double.parseDouble(existingBwAnnotation)); |
| 452 | |
| 453 | /* |
| 454 | * The computation is a shared bandwidth constraint based, so need to remove bandwidth constraint which |
| 455 | * has been utilized to create shared bandwidth constraint. |
| 456 | */ |
| 457 | if (bwConstraint != null) { |
| 458 | constraints.remove(bwConstraint); |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | if (existingBwValue != null) { |
| 463 | shBwConstraint = new SharedBandwidthConstraint(links, existingBwValue, bwConstraint.bandwidth()); |
| 464 | constraints.add(shBwConstraint); |
| 465 | } |
| 466 | } else { |
| 467 | constraints = new LinkedList<>(); |
| 468 | } |
| 469 | |
| 470 | constraints.add(CapabilityConstraint.of(CapabilityType.valueOf(lspSigType))); |
| 471 | if (costConstraint != null) { |
| 472 | constraints.add(costConstraint); |
| 473 | } |
| 474 | |
| 475 | computedPathSet = computePath(links.get(0).src().deviceId(), links.get(links.size() - 1).dst().deviceId(), |
| 476 | constraints); |
| 477 | |
| 478 | // NO-PATH |
| 479 | if (computedPathSet.isEmpty()) { |
| 480 | return false; |
| 481 | } |
| 482 | |
| 483 | Builder annotationBuilder = DefaultAnnotations.builder(); |
| 484 | annotationBuilder.set(BANDWIDTH, String.valueOf(bwConstraintValue)); |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 485 | if (costType != null) { |
| 486 | annotationBuilder.set(COST_TYPE, costType); |
| 487 | } |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 488 | annotationBuilder.set(LSP_SIG_TYPE, lspSigType); |
| 489 | annotationBuilder.set(PCE_INIT, TRUE); |
| 490 | annotationBuilder.set(DELEGATE, TRUE); |
| 491 | annotationBuilder.set(PLSP_ID, tunnel.annotations().value(PLSP_ID)); |
| 492 | annotationBuilder.set(PCC_TUNNEL_ID, tunnel.annotations().value(PCC_TUNNEL_ID)); |
| 493 | |
| 494 | Path computedPath = computedPathSet.iterator().next(); |
| 495 | LabelStack labelStack = null; |
| 496 | TunnelConsumerId consumerId = null; |
| 497 | LspType lspType = LspType.valueOf(lspSigType); |
| 498 | long localLspId = 0; |
| 499 | if (lspType != WITH_SIGNALLING) { |
| 500 | /* |
| 501 | * Local LSP id which is assigned by RSVP for RSVP signalled LSPs, will be assigned by |
| 502 | * PCE for non-RSVP signalled LSPs. |
| 503 | */ |
| 504 | localLspId = getNextLocalLspId(); |
| 505 | annotationBuilder.set(LOCAL_LSP_ID, String.valueOf(localLspId)); |
| 506 | |
| 507 | if (lspType == SR_WITHOUT_SIGNALLING) { |
| 508 | labelStack = srTeHandler.computeLabelStack(computedPath); |
| 509 | // Failed to form a label stack. |
| 510 | if (labelStack == null) { |
| 511 | return false; |
| 512 | } |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | Tunnel updatedTunnel = new DefaultTunnel(null, tunnel.src(), tunnel.dst(), MPLS, INIT, null, null, |
| 517 | tunnel.tunnelName(), computedPath, |
| 518 | labelStack, annotationBuilder.build()); |
| 519 | |
| 520 | // Allocate shared bandwidth. |
| 521 | if (bwConstraintValue != 0) { |
| 522 | consumerId = reserveBandwidth(computedPath, bwConstraintValue, shBwConstraint); |
| 523 | if (consumerId == null) { |
| 524 | return false; |
| 525 | } |
| 526 | } |
| 527 | |
| 528 | TunnelId updatedTunnelId = tunnelService.setupTunnel(appId, links.get(0).src().deviceId(), updatedTunnel, |
| 529 | computedPath); |
| 530 | |
| 531 | if (updatedTunnelId == null) { |
| 532 | if (consumerId != null) { |
| 533 | resourceService.release(consumerId); |
| 534 | } |
| 535 | return false; |
| 536 | } |
| 537 | |
| 538 | if (consumerId != null) { |
| 539 | // Store tunnel consumer id in LSP-Label store. |
| 540 | PceccTunnelInfo pceccTunnelInfo = new PceccTunnelInfo(null, consumerId); |
| 541 | pceStore.addTunnelInfo(updatedTunnelId, pceccTunnelInfo); |
| 542 | } |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 543 | return true; |
| 544 | } |
| 545 | |
| 546 | @Override |
| 547 | public boolean releasePath(TunnelId tunnelId) { |
| 548 | checkNotNull(tunnelId); |
| 549 | // 1. Query Tunnel from Tunnel manager. |
| 550 | Tunnel tunnel = tunnelService.queryTunnel(tunnelId); |
| 551 | |
| 552 | if (tunnel == null) { |
| 553 | return false; |
| 554 | } |
| 555 | |
| 556 | // 2. Call tunnel service. |
| 557 | return tunnelService.downTunnel(appId, tunnel.tunnelId()); |
| 558 | } |
| 559 | |
| 560 | @Override |
| 561 | public Iterable<Tunnel> queryAllPath() { |
| 562 | return tunnelService.queryTunnel(MPLS); |
| 563 | } |
| 564 | |
| 565 | @Override |
| 566 | public Tunnel queryPath(TunnelId tunnelId) { |
| 567 | return tunnelService.queryTunnel(tunnelId); |
| 568 | } |
| 569 | |
| 570 | /** |
| 571 | * Returns the next local LSP identifier to be used either by getting from |
| 572 | * freed list if available otherwise generating a new one. |
| 573 | * |
| 574 | * @return value of local LSP identifier |
| 575 | */ |
| 576 | private short getNextLocalLspId() { |
| 577 | // If there is any free id use it. Otherwise generate new id. |
| 578 | if (localLspIdFreeList.isEmpty()) { |
| 579 | return (short) localLspIdIdGen.getNewId(); |
| 580 | } |
| 581 | Iterator<Short> it = localLspIdFreeList.iterator(); |
| 582 | Short value = it.next(); |
| 583 | localLspIdFreeList.remove(value); |
| 584 | return value; |
| 585 | } |
| 586 | |
Priyanka B | b696358 | 2016-05-20 20:21:20 +0530 | [diff] [blame] | 587 | protected class TeConstraintBasedLinkWeight implements LinkWeight { |
| 588 | |
| 589 | private final List<Constraint> constraints; |
| 590 | |
| 591 | /** |
| 592 | * Creates a new edge-weight function capable of evaluating links |
| 593 | * on the basis of the specified constraints. |
| 594 | * |
| 595 | * @param constraints path constraints |
| 596 | */ |
| 597 | public TeConstraintBasedLinkWeight(List<Constraint> constraints) { |
| 598 | if (constraints == null) { |
| 599 | this.constraints = Collections.emptyList(); |
| 600 | } else { |
| 601 | this.constraints = ImmutableList.copyOf(constraints); |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | @Override |
| 606 | public double weight(TopologyEdge edge) { |
| 607 | if (!constraints.iterator().hasNext()) { |
| 608 | //Takes default cost/hopcount as 1 if no constraints specified |
| 609 | return 1.0; |
| 610 | } |
| 611 | |
| 612 | Iterator<Constraint> it = constraints.iterator(); |
| 613 | double cost = 1; |
| 614 | |
| 615 | //If any constraint fails return -1 also value of cost returned from cost constraint can't be negative |
| 616 | while (it.hasNext() && cost > 0) { |
| 617 | Constraint constraint = it.next(); |
| 618 | if (constraint instanceof CapabilityConstraint) { |
| 619 | cost = ((CapabilityConstraint) constraint).isValidLink(edge.link(), deviceService) ? 1 : -1; |
| 620 | } else { |
| 621 | cost = constraint.cost(edge.link(), resourceService::isAvailable); |
| 622 | } |
| 623 | } |
| 624 | return cost; |
| 625 | } |
| 626 | } |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 627 | |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 628 | //TODO: annotations used for temporarily later projection/network config will be used |
| 629 | private class InternalTopologyListener implements TopologyListener { |
| 630 | @Override |
| 631 | public void event(TopologyEvent event) { |
| 632 | event.reasons().forEach(e -> { |
| 633 | //If event type is link removed, get the impacted tunnel |
| 634 | if (e instanceof LinkEvent) { |
| 635 | LinkEvent linkEvent = (LinkEvent) e; |
| 636 | if (linkEvent.type() == LinkEvent.Type.LINK_REMOVED) { |
| 637 | tunnelService.queryTunnel(MPLS).forEach(t -> { |
| 638 | if (t.path().links().contains(((Link) e.subject()))) { |
| 639 | // Check whether this ONOS instance is master for ingress device if yes, |
| 640 | // recompute and send update |
| 641 | checkForMasterAndUpdateTunnel(t.path().src().deviceId(), t); |
| 642 | } |
| 643 | }); |
| 644 | } |
| 645 | } |
| 646 | }); |
| 647 | } |
| 648 | } |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 649 | |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 650 | private boolean checkForMasterAndUpdateTunnel(DeviceId src, Tunnel tunnel) { |
| 651 | /** |
| 652 | * Master of ingress node will recompute and also delegation flag must be set. |
| 653 | */ |
| 654 | if (mastershipService.isLocalMaster(src) |
| 655 | && Boolean.valueOf(tunnel.annotations().value(DELEGATE)) != null) { |
| 656 | LinkedList<Constraint> constraintList = new LinkedList<>(); |
| 657 | |
| 658 | if (tunnel.annotations().value(BANDWIDTH) != null) { |
| 659 | //Requested bandwidth will be same as previous allocated bandwidth for the tunnel |
| 660 | BandwidthConstraint localConst = new BandwidthConstraint(Bandwidth.bps(Double.parseDouble(tunnel |
| 661 | .annotations().value(BANDWIDTH)))); |
| 662 | constraintList.add(localConst); |
| 663 | } |
| 664 | if (tunnel.annotations().value(COST_TYPE) != null) { |
| 665 | constraintList.add(CostConstraint.of(CostConstraint.Type.valueOf(tunnel.annotations().value( |
| 666 | COST_TYPE)))); |
| 667 | } |
Priyanka B | 9fa4ed3 | 2016-05-27 11:59:24 +0530 | [diff] [blame^] | 668 | |
| 669 | /* |
| 670 | * If tunnel was UP after recomputation failed then store failed path in PCE store send PCIntiate(remove) |
| 671 | * and If tunnel is failed and computation fails nothing to do because tunnel status will be same[Failed] |
| 672 | */ |
| 673 | if (!updatePath(tunnel.tunnelId(), constraintList) && !tunnel.state().equals(Tunnel.State.FAILED)) { |
Priyanka B | 3f92c5a | 2016-05-27 10:14:16 +0530 | [diff] [blame] | 674 | // If updation fails store in PCE store as failed path |
| 675 | // then PCInitiate (Remove) |
| 676 | pceStore.addFailedPathInfo(new PcePathInfo(tunnel.path().src().deviceId(), tunnel |
| 677 | .path().dst().deviceId(), tunnel.tunnelName().value(), constraintList, |
| 678 | LspType.valueOf(tunnel.annotations().value(LSP_SIG_TYPE)))); |
| 679 | //Release that tunnel calling PCInitiate |
| 680 | releasePath(tunnel.tunnelId()); |
| 681 | } |
| 682 | } |
| 683 | |
| 684 | return false; |
| 685 | } |
| 686 | |
| 687 | // Allocates the bandwidth locally for PCECC tunnels. |
Avantika-Huawei | dbdf772 | 2016-05-21 14:20:31 +0530 | [diff] [blame] | 688 | private TunnelConsumerId reserveBandwidth(Path computedPath, double bandwidthConstraint, |
| 689 | SharedBandwidthConstraint shBwConstraint) { |
| 690 | checkNotNull(computedPath); |
| 691 | checkNotNull(bandwidthConstraint); |
| 692 | Resource resource = null; |
| 693 | double bwToAllocate = 0; |
| 694 | |
| 695 | TunnelConsumerId consumer = TunnelConsumerId.valueOf(tunnelConsumerIdGen.getNewId()); |
| 696 | |
| 697 | /** |
| 698 | * Shared bandwidth sub-case : Lesser bandwidth required than original - |
| 699 | * No reservation required. |
| 700 | */ |
| 701 | Double additionalBwValue = null; |
| 702 | if (shBwConstraint != null) { |
| 703 | additionalBwValue = ((bandwidthConstraint - shBwConstraint.sharedBwValue().bps()) <= 0) ? null |
| 704 | : (bandwidthConstraint - shBwConstraint.sharedBwValue().bps()); |
| 705 | } |
| 706 | |
| 707 | Optional<ResourceAllocation> resAlloc = null; |
| 708 | for (Link link : computedPath.links()) { |
| 709 | bwToAllocate = 0; |
| 710 | if ((shBwConstraint != null) && (shBwConstraint.links().contains(link))) { |
| 711 | if (additionalBwValue != null) { |
| 712 | bwToAllocate = bandwidthConstraint - additionalBwValue; |
| 713 | } |
| 714 | } else { |
| 715 | bwToAllocate = bandwidthConstraint; |
| 716 | } |
| 717 | |
| 718 | /** |
| 719 | * In shared bandwidth cases, where new BW is lesser than old BW, it |
| 720 | * is not required to allocate anything. |
| 721 | */ |
| 722 | if (bwToAllocate != 0) { |
| 723 | resource = Resources.continuous(link.src().deviceId(), link.src().port(), Bandwidth.class) |
| 724 | .resource(bwToAllocate); |
| 725 | resAlloc = resourceService.allocate(consumer, resource); |
| 726 | |
| 727 | // If allocation for any link fails, then release the partially allocated bandwidth. |
| 728 | if (!resAlloc.isPresent()) { |
| 729 | resourceService.release(consumer); |
| 730 | return null; |
| 731 | } |
| 732 | } |
| 733 | } |
| 734 | |
| 735 | /* |
| 736 | * Note: Storing of tunnel consumer id is done by caller of bandwidth reservation function. So deleting tunnel |
| 737 | * consumer id should be done by caller of bandwidth releasing function. This will prevent ambiguities related |
| 738 | * to who is supposed to store/delete. |
| 739 | */ |
| 740 | return consumer; |
| 741 | } |
| 742 | |
| 743 | /* |
| 744 | * Deallocates the bandwidth which is reserved locally for PCECC tunnels. |
| 745 | */ |
| 746 | private void releaseBandwidth(Tunnel tunnel) { |
| 747 | // Between same source and destination, search the tunnel with same symbolic path name. |
| 748 | Collection<Tunnel> tunnelQueryResult = tunnelService.queryTunnel(tunnel.src(), tunnel.dst()); |
| 749 | Tunnel newTunnel = null; |
| 750 | for (Tunnel tunnelObj : tunnelQueryResult) { |
| 751 | if (tunnel.tunnelName().value().equals(tunnelObj.tunnelName().value())) { |
| 752 | newTunnel = tunnelObj; |
| 753 | break; |
| 754 | } |
| 755 | } |
| 756 | |
| 757 | // Even if one link is shared, the bandwidth release should happen based on shared mechanism. |
| 758 | boolean isLinkShared = false; |
| 759 | if (newTunnel != null) { |
| 760 | for (Link link : tunnel.path().links()) { |
| 761 | if (newTunnel.path().links().contains(link)) { |
| 762 | isLinkShared = true; |
| 763 | break; |
| 764 | } |
| 765 | } |
| 766 | } |
| 767 | |
| 768 | if (isLinkShared) { |
| 769 | releaseSharedBandwidth(newTunnel, tunnel); |
| 770 | return; |
| 771 | } |
| 772 | |
| 773 | resourceService.release(pceStore.getTunnelInfo(tunnel.tunnelId()).tunnelConsumerId()); |
| 774 | return; |
| 775 | |
| 776 | /* |
| 777 | * Note: Storing of tunnel consumer id is done by caller of bandwidth reservation function. So deleting tunnel |
| 778 | * consumer id should be done by caller of bandwidth releasing function. This will prevent ambiguities related |
| 779 | * to who is supposed to store/delete. |
| 780 | */ |
| 781 | } |
| 782 | |
| 783 | /** |
| 784 | * Re-allocates the bandwidth for the tunnel for which the bandwidth was |
| 785 | * allocated in shared mode initially. |
| 786 | */ |
| 787 | private synchronized void releaseSharedBandwidth(Tunnel newTunnel, Tunnel oldTunnel) { |
| 788 | // 1. Release old tunnel's bandwidth. |
| 789 | resourceService.release(pceStore.getTunnelInfo(oldTunnel.tunnelId()).tunnelConsumerId()); |
| 790 | |
| 791 | // 2. Release new tunnel's bandwidth |
| 792 | ResourceConsumer consumer = pceStore.getTunnelInfo(newTunnel.tunnelId()).tunnelConsumerId(); |
| 793 | resourceService.release(consumer); |
| 794 | |
| 795 | // 3. Allocate new tunnel's complete bandwidth. |
| 796 | double bandwidth = Double.parseDouble(newTunnel.annotations().value(BANDWIDTH)); |
| 797 | Resource resource; |
| 798 | |
| 799 | for (Link link : newTunnel.path().links()) { |
| 800 | resource = Resources.continuous(link.src().deviceId(), link.src().port(), Bandwidth.class) |
| 801 | .resource(bandwidth); |
| 802 | resourceService.allocate(consumer, resource); // Reusing new tunnel's TunnelConsumerId intentionally. |
| 803 | } |
| 804 | } |
| 805 | |
| 806 | // Listens on tunnel events. |
| 807 | private class InnerTunnelListener implements TunnelListener { |
| 808 | @Override |
| 809 | public void event(TunnelEvent event) { |
| 810 | // Event gets generated with old tunnel object. |
| 811 | Tunnel tunnel = event.subject(); |
| 812 | if (tunnel.type() != MPLS) { |
| 813 | return; |
| 814 | } |
| 815 | |
| 816 | LspType lspType = LspType.valueOf(tunnel.annotations().value(LSP_SIG_TYPE)); |
| 817 | String tunnelBandwidth = tunnel.annotations().value(BANDWIDTH); |
| 818 | double bwConstraintValue = 0; |
| 819 | if (tunnelBandwidth != null) { |
| 820 | bwConstraintValue = Double.parseDouble(tunnelBandwidth); |
| 821 | } |
| 822 | |
| 823 | switch (event.type()) { |
| 824 | case TUNNEL_ADDED: |
| 825 | // Allocate bandwidth for non-initiated, delegated LSPs with non-zero bandwidth (learned LSPs). |
| 826 | String pceInit = tunnel.annotations().value(PCE_INIT); |
| 827 | if (FALSE.equalsIgnoreCase(pceInit) |
| 828 | && bwConstraintValue != 0) { |
| 829 | reserveBandwidth(tunnel.path(), bwConstraintValue, null); |
| 830 | } |
| 831 | break; |
| 832 | |
| 833 | case TUNNEL_UPDATED: |
| 834 | // Allocate/send labels for basic PCECC tunnels. |
| 835 | if ((tunnel.state() == ESTABLISHED) && (lspType == WITHOUT_SIGNALLING_AND_WITHOUT_SR)) { |
| 836 | crHandler.allocateLabel(tunnel); |
| 837 | } |
| 838 | |
| 839 | if (tunnel.state() == UNSTABLE) { |
| 840 | /* |
| 841 | * During LSP DB sync if PCC doesn't report LSP which was PCE initiated, it's state is turned into |
| 842 | * unstable so that it can be setup again. Add into failed path store so that it can be recomputed |
| 843 | * and setup while global reoptimization. |
| 844 | */ |
| 845 | |
| 846 | List<Constraint> constraints = new LinkedList<>(); |
| 847 | String bandwidth = tunnel.annotations().value(BANDWIDTH); |
| 848 | if (bandwidth != null) { |
| 849 | constraints.add(new BandwidthConstraint(Bandwidth |
| 850 | .bps(Double.parseDouble(bandwidth)))); |
| 851 | } |
| 852 | |
| 853 | String costType = tunnel.annotations().value(COST_TYPE); |
| 854 | if (costType != null) { |
| 855 | CostConstraint costConstraint = new CostConstraint(CostConstraint.Type.valueOf(costType)); |
| 856 | constraints.add(costConstraint); |
| 857 | } |
| 858 | |
| 859 | constraints.add(CapabilityConstraint |
| 860 | .of(CapabilityType.valueOf(tunnel.annotations().value(LSP_SIG_TYPE)))); |
| 861 | |
| 862 | List<Link> links = tunnel.path().links(); |
| 863 | pceStore.addFailedPathInfo(new PcePathInfo(links.get(0).src().deviceId(), |
| 864 | links.get(links.size() - 1).dst().deviceId(), |
| 865 | tunnel.tunnelName().value(), constraints, lspType)); |
| 866 | } |
| 867 | break; |
| 868 | |
| 869 | case TUNNEL_REMOVED: |
| 870 | if (lspType != WITH_SIGNALLING) { |
| 871 | localLspIdFreeList.add(Short.valueOf(tunnel.annotations().value(LOCAL_LSP_ID))); |
| 872 | } |
| 873 | |
| 874 | // If not zero bandwidth, and delegated (initiated LSPs will also be delegated). |
| 875 | if (bwConstraintValue != 0) { |
| 876 | releaseBandwidth(event.subject()); |
| 877 | |
| 878 | // Release basic PCECC labels. |
| 879 | if (lspType == WITHOUT_SIGNALLING_AND_WITHOUT_SR) { |
| 880 | // Delete stored tunnel consumer id from PCE store (while still retaining label list.) |
| 881 | PceccTunnelInfo pceccTunnelInfo = pceStore.getTunnelInfo(tunnel.tunnelId()); |
| 882 | pceccTunnelInfo.tunnelConsumerId(null); |
| 883 | crHandler.releaseLabel(tunnel); |
| 884 | } else { |
| 885 | pceStore.removeTunnelInfo(tunnel.tunnelId()); |
| 886 | } |
| 887 | } |
| 888 | break; |
| 889 | |
| 890 | default: |
| 891 | break; |
| 892 | |
| 893 | } |
| 894 | return; |
| 895 | } |
| 896 | } |
| 897 | |
| 898 | private boolean syncLabelDb(DeviceId deviceId) { |
| 899 | checkNotNull(deviceId); |
| 900 | Map<DeviceId, LabelResourceId> globalNodeLabelMap = pceStore.getGlobalNodeLabels(); |
| 901 | |
| 902 | for (Entry<DeviceId, LabelResourceId> entry : globalNodeLabelMap.entrySet()) { |
| 903 | |
| 904 | // Convert from DeviceId to TunnelEndPoint |
| 905 | Device srcDevice = deviceService.getDevice(entry.getKey()); |
| 906 | |
| 907 | /* |
| 908 | * If there is a slight difference in timing such that if device subsystem has removed the device but PCE |
| 909 | * store still has it, just ignore such devices. |
| 910 | */ |
| 911 | if (srcDevice == null) { |
| 912 | continue; |
| 913 | } |
| 914 | |
| 915 | String srcLsrId = srcDevice.annotations().value(LSRID); |
| 916 | if (srcLsrId == null) { |
| 917 | continue; |
| 918 | } |
| 919 | |
| 920 | srTeHandler.advertiseNodeLabelRule(deviceId, |
| 921 | entry.getValue(), |
| 922 | IpPrefix.valueOf(IpAddress.valueOf(srcLsrId), PREFIX_LENGTH), |
| 923 | Objective.Operation.ADD, false); |
| 924 | } |
| 925 | |
| 926 | Map<Link, LabelResourceId> adjLabelMap = pceStore.getAdjLabels(); |
| 927 | for (Entry<Link, LabelResourceId> entry : adjLabelMap.entrySet()) { |
| 928 | if (entry.getKey().src().deviceId().equals(deviceId)) { |
| 929 | srTeHandler.installAdjLabelRule(deviceId, |
| 930 | entry.getValue(), |
| 931 | entry.getKey().src().port(), |
| 932 | entry.getKey().dst().port(), |
| 933 | Objective.Operation.ADD); |
| 934 | } |
| 935 | } |
| 936 | |
| 937 | srTeHandler.advertiseNodeLabelRule(deviceId, |
| 938 | LabelResourceId.labelResourceId(0), |
| 939 | IpPrefix.valueOf(END_OF_SYNC_IP_PREFIX), |
| 940 | Objective.Operation.ADD, true); |
| 941 | |
| 942 | return true; |
| 943 | } |
| 944 | |
| 945 | // Process the packet received. |
| 946 | private class PcepPacketProcessor implements PacketProcessor { |
| 947 | // Process the packet received and in our case initiates the label DB sync. |
| 948 | @Override |
| 949 | public void process(PacketContext context) { |
| 950 | // Stop processing if the packet has been handled, since we |
| 951 | // can't do any more to it. |
| 952 | |
| 953 | if (context.isHandled()) { |
| 954 | return; |
| 955 | } |
| 956 | |
| 957 | InboundPacket pkt = context.inPacket(); |
| 958 | syncLabelDb(pkt.receivedFrom().deviceId()); |
| 959 | } |
| 960 | } |
| 961 | |
Priyanka B | 9fa4ed3 | 2016-05-27 11:59:24 +0530 | [diff] [blame^] | 962 | //Computes path from tunnel store and also path failed to setup. |
| 963 | private void callForOptimization() { |
| 964 | //Recompute the LSPs which it was delegated [LSPs stored in PCE store (failed paths)] |
| 965 | for (PcePathInfo failedPathInfo : pceStore.getFailedPathInfos()) { |
| 966 | checkForMasterAndSetupPath(failedPathInfo); |
| 967 | } |
| 968 | |
| 969 | //Recompute the LSPs for which it was delegated [LSPs stored in tunnel store] |
| 970 | tunnelService.queryTunnel(MPLS).forEach(t -> { |
| 971 | checkForMasterAndUpdateTunnel(t.path().src().deviceId(), t); |
| 972 | }); |
| 973 | } |
| 974 | |
| 975 | private boolean checkForMasterAndSetupPath(PcePathInfo failedPathInfo) { |
| 976 | /** |
| 977 | * Master of ingress node will setup the path failed stored in PCE store. |
| 978 | */ |
| 979 | if (mastershipService.isLocalMaster(failedPathInfo.src())) { |
| 980 | if (setupPath(failedPathInfo.src(), failedPathInfo.dst(), failedPathInfo.name(), |
| 981 | failedPathInfo.constraints(), failedPathInfo.lspType())) { |
| 982 | // If computation is success remove that path |
| 983 | pceStore.removeFailedPathInfo(failedPathInfo); |
| 984 | return true; |
| 985 | } |
| 986 | } |
| 987 | |
| 988 | return false; |
| 989 | } |
| 990 | |
| 991 | //Timer to call global optimization |
| 992 | private class GlobalOptimizationTimer implements Runnable { |
| 993 | |
| 994 | public GlobalOptimizationTimer() { |
| 995 | } |
| 996 | |
| 997 | @Override |
| 998 | public void run() { |
| 999 | callForOptimization(); |
| 1000 | } |
| 1001 | } |
Avantika-Huawei | 73862d4 | 2016-05-12 18:58:06 +0530 | [diff] [blame] | 1002 | } |