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