| /* |
| * Copyright 2016-present Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.pce.pceservice; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Map.Entry; |
| import java.util.Set; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.IPv4; |
| |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.packet.IpPrefix; |
| import org.onlab.packet.TCP; |
| import org.onlab.util.Bandwidth; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.incubator.net.resource.label.LabelResourceAdminService; |
| import org.onosproject.incubator.net.resource.label.LabelResourceId; |
| import org.onosproject.incubator.net.resource.label.LabelResourceService; |
| import org.onosproject.core.IdGenerator; |
| import org.onosproject.incubator.net.tunnel.DefaultTunnel; |
| import org.onosproject.incubator.net.tunnel.IpTunnelEndPoint; |
| import org.onosproject.incubator.net.tunnel.LabelStack; |
| import org.onosproject.incubator.net.tunnel.Tunnel; |
| import org.onosproject.incubator.net.tunnel.TunnelEndPoint; |
| import org.onosproject.incubator.net.tunnel.TunnelEvent; |
| import org.onosproject.incubator.net.tunnel.TunnelId; |
| import org.onosproject.incubator.net.tunnel.TunnelListener; |
| import org.onosproject.incubator.net.tunnel.TunnelName; |
| import org.onosproject.incubator.net.tunnel.TunnelService; |
| import org.onosproject.mastership.MastershipService; |
| import org.onosproject.net.config.NetworkConfigEvent; |
| import org.onosproject.net.config.NetworkConfigListener; |
| import org.onosproject.net.config.NetworkConfigService; |
| import org.onosproject.net.DefaultAnnotations; |
| import org.onosproject.net.DefaultAnnotations.Builder; |
| import org.onosproject.net.Device; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Link; |
| import org.onosproject.net.Path; |
| import org.onosproject.net.device.DeviceEvent; |
| import org.onosproject.net.device.DeviceListener; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.flowobjective.FlowObjectiveService; |
| import org.onosproject.net.flowobjective.Objective; |
| import org.onosproject.net.intent.Constraint; |
| import org.onosproject.net.intent.constraint.BandwidthConstraint; |
| import org.onosproject.net.link.LinkListener; |
| import org.onosproject.net.link.LinkEvent; |
| import org.onosproject.net.link.LinkService; |
| import org.onosproject.net.MastershipRole; |
| import org.onosproject.pce.pceservice.constraint.CapabilityConstraint; |
| import org.onosproject.pce.pceservice.constraint.CapabilityConstraint.CapabilityType; |
| import org.onosproject.pce.pceservice.constraint.CostConstraint; |
| import org.onosproject.pce.pceservice.constraint.SharedBandwidthConstraint; |
| import org.onosproject.net.resource.Resource; |
| import org.onosproject.net.resource.ResourceAllocation; |
| import org.onosproject.net.resource.ResourceConsumer; |
| import org.onosproject.net.resource.ResourceQueryService; |
| import org.onosproject.net.resource.ResourceService; |
| import org.onosproject.net.resource.Resources; |
| import org.onosproject.net.topology.LinkWeight; |
| import org.onosproject.net.topology.PathService; |
| import org.onosproject.net.topology.TopologyEdge; |
| import org.onosproject.net.topology.TopologyEvent; |
| import org.onosproject.net.topology.TopologyListener; |
| import org.onosproject.net.topology.TopologyService; |
| import org.onosproject.pce.pceservice.api.PceService; |
| import org.onosproject.pce.pcestore.PcePathInfo; |
| import org.onosproject.pce.pcestore.PceccTunnelInfo; |
| import org.onosproject.pce.pcestore.api.PceStore; |
| import org.onosproject.pcep.api.DeviceCapability; |
| import org.onosproject.store.serializers.KryoNamespaces; |
| import org.onosproject.store.service.DistributedSet; |
| import org.onosproject.store.service.Serializer; |
| import org.onosproject.store.service.StorageService; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableSet; |
| |
| import static org.onosproject.incubator.net.tunnel.Tunnel.Type.MPLS; |
| import static org.onosproject.incubator.net.tunnel.Tunnel.State.INIT; |
| import static org.onosproject.incubator.net.tunnel.Tunnel.State.ESTABLISHED; |
| import static org.onosproject.incubator.net.tunnel.Tunnel.State.UNSTABLE; |
| import static org.onosproject.pce.pceservice.LspType.WITH_SIGNALLING; |
| import static org.onosproject.pce.pceservice.LspType.SR_WITHOUT_SIGNALLING; |
| import static org.onosproject.pce.pceservice.LspType.WITHOUT_SIGNALLING_AND_WITHOUT_SR; |
| |
| import static org.onosproject.pce.pceservice.PcepAnnotationKeys.BANDWIDTH; |
| import static org.onosproject.pce.pceservice.PcepAnnotationKeys.LOCAL_LSP_ID; |
| import static org.onosproject.pce.pceservice.PcepAnnotationKeys.LSP_SIG_TYPE; |
| import static org.onosproject.pce.pceservice.PcepAnnotationKeys.PCE_INIT; |
| import static org.onosproject.pce.pceservice.PcepAnnotationKeys.PLSP_ID; |
| import static org.onosproject.pce.pceservice.PcepAnnotationKeys.PCC_TUNNEL_ID; |
| import static org.onosproject.pce.pceservice.PcepAnnotationKeys.DELEGATE; |
| import static org.onosproject.pce.pceservice.PcepAnnotationKeys.COST_TYPE; |
| |
| import org.onosproject.net.packet.InboundPacket; |
| import org.onosproject.net.packet.PacketContext; |
| import org.onosproject.net.packet.PacketProcessor; |
| import org.onosproject.net.packet.PacketService; |
| |
| /** |
| * Implementation of PCE service. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class PceManager implements PceService { |
| private static final Logger log = LoggerFactory.getLogger(PceManager.class); |
| |
| public static final long GLOBAL_LABEL_SPACE_MIN = 4097; |
| public static final long GLOBAL_LABEL_SPACE_MAX = 5121; |
| private static final String DEVICE_NULL = "Device-cannot be null"; |
| private static final String LINK_NULL = "Link-cannot be null"; |
| public static final String PCE_SERVICE_APP = "org.onosproject.pce"; |
| private static final String LOCAL_LSP_ID_GEN_TOPIC = "pcep-local-lsp-id"; |
| public static final String DEVICE_TYPE = "type"; |
| public static final String L3_DEVICE = "L3"; |
| private static final int PREFIX_LENGTH = 32; |
| |
| private static final String TUNNEL_CONSUMER_ID_GEN_TOPIC = "pcep-tunnel-consumer-id"; |
| private IdGenerator tunnelConsumerIdGen; |
| |
| private static final String LSRID = "lsrId"; |
| private static final String TRUE = "true"; |
| private static final String FALSE = "false"; |
| private static final String END_OF_SYNC_IP_PREFIX = "0.0.0.0/32"; |
| public static final int PCEP_PORT = 4189; |
| |
| private IdGenerator localLspIdIdGen; |
| protected DistributedSet<Short> localLspIdFreeList; |
| |
| // LSR-id and device-id mapping for checking capability if L3 device is not |
| // having its capability |
| private Map<String, DeviceId> lsrIdDeviceIdMap = new HashMap<>(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ResourceService resourceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ResourceQueryService resourceQueryService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PathService pathService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PceStore pceStore; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected TunnelService tunnelService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected StorageService storageService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PacketService packetService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected LinkService linkService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected NetworkConfigService netCfgService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected LabelResourceAdminService labelRsrcAdminService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected LabelResourceService labelRsrcService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected FlowObjectiveService flowObjectiveService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected MastershipService mastershipService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected TopologyService topologyService; |
| |
| private TunnelListener listener = new InnerTunnelListener(); |
| private DeviceListener deviceListener = new InternalDeviceListener(); |
| private LinkListener linkListener = new InternalLinkListener(); |
| private InternalConfigListener cfgListener = new InternalConfigListener(); |
| private BasicPceccHandler crHandler; |
| private PceccSrTeBeHandler srTeHandler; |
| private ApplicationId appId; |
| |
| private final PcepPacketProcessor processor = new PcepPacketProcessor(); |
| private final TopologyListener topologyListener = new InternalTopologyListener(); |
| private ScheduledExecutorService executor; |
| |
| public static final int INITIAL_DELAY = 30; |
| public static final int PERIODIC_DELAY = 30; |
| |
| /** |
| * Creates new instance of PceManager. |
| */ |
| public PceManager() { |
| } |
| |
| @Activate |
| protected void activate() { |
| appId = coreService.registerApplication(PCE_SERVICE_APP); |
| crHandler = BasicPceccHandler.getInstance(); |
| crHandler.initialize(labelRsrcService, flowObjectiveService, appId, pceStore); |
| |
| srTeHandler = PceccSrTeBeHandler.getInstance(); |
| srTeHandler.initialize(labelRsrcAdminService, labelRsrcService, flowObjectiveService, appId, pceStore, |
| deviceService); |
| |
| tunnelService.addListener(listener); |
| deviceService.addListener(deviceListener); |
| linkService.addListener(linkListener); |
| netCfgService.addListener(cfgListener); |
| |
| tunnelConsumerIdGen = coreService.getIdGenerator(TUNNEL_CONSUMER_ID_GEN_TOPIC); |
| localLspIdIdGen = coreService.getIdGenerator(LOCAL_LSP_ID_GEN_TOPIC); |
| localLspIdFreeList = storageService.<Short>setBuilder() |
| .withName("pcepLocalLspIdDeletedList") |
| .withSerializer(Serializer.using(KryoNamespaces.API)) |
| .build() |
| .asDistributedSet(); |
| |
| packetService.addProcessor(processor, PacketProcessor.director(4)); |
| topologyService.addListener(topologyListener); |
| executor = Executors.newSingleThreadScheduledExecutor(); |
| //Start a timer when the component is up, with initial delay of 30min and periodic delays at 30min |
| executor.scheduleAtFixedRate(new GlobalOptimizationTimer(), INITIAL_DELAY, PERIODIC_DELAY, TimeUnit.MINUTES); |
| |
| // Reserve global node pool |
| if (!srTeHandler.reserveGlobalPool(GLOBAL_LABEL_SPACE_MIN, GLOBAL_LABEL_SPACE_MAX)) { |
| log.debug("Global node pool was already reserved."); |
| } |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| tunnelService.removeListener(listener); |
| deviceService.removeListener(deviceListener); |
| linkService.removeListener(linkListener); |
| netCfgService.removeListener(cfgListener); |
| packetService.removeProcessor(processor); |
| topologyService.removeListener(topologyListener); |
| // Shutdown the thread when component is deactivated |
| executor.shutdown(); |
| log.info("Stopped"); |
| } |
| |
| /** |
| * Returns an edge-weight capable of evaluating links on the basis of the |
| * specified constraints. |
| * |
| * @param constraints path constraints |
| * @return edge-weight function |
| */ |
| private LinkWeight weight(List<Constraint> constraints) { |
| return new TeConstraintBasedLinkWeight(constraints); |
| } |
| |
| /** |
| * Computes a path between two devices. |
| * |
| * @param src ingress device |
| * @param dst egress device |
| * @param constraints path constraints |
| * @return computed path based on constraints |
| */ |
| protected Set<Path> computePath(DeviceId src, DeviceId dst, List<Constraint> constraints) { |
| if (pathService == null) { |
| return ImmutableSet.of(); |
| } |
| Set<Path> paths = pathService.getPaths(src, dst, weight(constraints)); |
| if (!paths.isEmpty()) { |
| return paths; |
| } |
| return ImmutableSet.of(); |
| } |
| |
| //[TODO:] handle requests in queue |
| @Override |
| public boolean setupPath(DeviceId src, DeviceId dst, String tunnelName, List<Constraint> constraints, |
| LspType lspType) { |
| checkNotNull(src); |
| checkNotNull(dst); |
| checkNotNull(tunnelName); |
| checkNotNull(lspType); |
| |
| // Convert from DeviceId to TunnelEndPoint |
| Device srcDevice = deviceService.getDevice(src); |
| Device dstDevice = deviceService.getDevice(dst); |
| |
| if (srcDevice == null || dstDevice == null) { |
| // Device is not known. |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| return false; |
| } |
| |
| // In future projections instead of annotations will be used to fetch LSR ID. |
| String srcLsrId = srcDevice.annotations().value(LSRID); |
| String dstLsrId = dstDevice.annotations().value(LSRID); |
| |
| if (srcLsrId == null || dstLsrId == null) { |
| // LSR id is not known. |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| return false; |
| } |
| |
| // Get device config from netconfig, to ascertain that session with ingress is present. |
| DeviceCapability cfg = netCfgService.getConfig(DeviceId.deviceId(srcLsrId), DeviceCapability.class); |
| if (cfg == null) { |
| log.debug("No session to ingress."); |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| return false; |
| } |
| |
| TunnelEndPoint srcEndPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(srcLsrId)); |
| TunnelEndPoint dstEndPoint = IpTunnelEndPoint.ipTunnelPoint(IpAddress.valueOf(dstLsrId)); |
| |
| double bwConstraintValue = 0; |
| CostConstraint costConstraint = null; |
| if (constraints != null) { |
| constraints.add(CapabilityConstraint.of(CapabilityType.valueOf(lspType.name()))); |
| Iterator<Constraint> iterator = constraints.iterator(); |
| |
| while (iterator.hasNext()) { |
| Constraint constraint = iterator.next(); |
| if (constraint instanceof BandwidthConstraint) { |
| bwConstraintValue = ((BandwidthConstraint) constraint).bandwidth().bps(); |
| } else if (constraint instanceof CostConstraint) { |
| costConstraint = (CostConstraint) constraint; |
| } |
| } |
| |
| /* |
| * Add cost at the end of the list of constraints. The path computation algorithm also computes cumulative |
| * cost. The function which checks the limiting/capability constraints also returns per link cost. This |
| * function can either return the result of limiting/capability constraint validation or the value of link |
| * cost, depending upon what is the last constraint in the loop. |
| */ |
| if (costConstraint != null) { |
| constraints.remove(costConstraint); |
| constraints.add(costConstraint); |
| } |
| } else { |
| constraints = new LinkedList<>(); |
| constraints.add(CapabilityConstraint.of(CapabilityType.valueOf(lspType.name()))); |
| } |
| |
| Set<Path> computedPathSet = computePath(src, dst, constraints); |
| |
| // NO-PATH |
| if (computedPathSet.isEmpty()) { |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| return false; |
| } |
| |
| Builder annotationBuilder = DefaultAnnotations.builder(); |
| if (bwConstraintValue != 0) { |
| annotationBuilder.set(BANDWIDTH, String.valueOf(bwConstraintValue)); |
| } |
| if (costConstraint != null) { |
| annotationBuilder.set(COST_TYPE, String.valueOf(costConstraint.type())); |
| } |
| annotationBuilder.set(LSP_SIG_TYPE, lspType.name()); |
| annotationBuilder.set(PCE_INIT, TRUE); |
| annotationBuilder.set(DELEGATE, TRUE); |
| |
| Path computedPath = computedPathSet.iterator().next(); |
| LabelStack labelStack = null; |
| |
| if (lspType == SR_WITHOUT_SIGNALLING) { |
| labelStack = srTeHandler.computeLabelStack(computedPath); |
| // Failed to form a label stack. |
| if (labelStack == null) { |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| return false; |
| } |
| } |
| |
| if (lspType != WITH_SIGNALLING) { |
| /* |
| * Local LSP id which is assigned by RSVP for RSVP signalled LSPs, will be assigned by |
| * PCE for non-RSVP signalled LSPs. |
| */ |
| annotationBuilder.set(LOCAL_LSP_ID, String.valueOf(getNextLocalLspId())); |
| } |
| |
| // For SR-TE tunnels, call SR manager for label stack and put it inside tunnel. |
| Tunnel tunnel = new DefaultTunnel(null, srcEndPoint, dstEndPoint, MPLS, INIT, null, null, |
| TunnelName.tunnelName(tunnelName), computedPath, |
| labelStack, annotationBuilder.build()); |
| |
| // Allocate bandwidth. |
| TunnelConsumerId consumerId = null; |
| if (bwConstraintValue != 0) { |
| consumerId = reserveBandwidth(computedPath, bwConstraintValue, null); |
| if (consumerId == null) { |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| return false; |
| } |
| } |
| |
| TunnelId tunnelId = tunnelService.setupTunnel(appId, src, tunnel, computedPath); |
| if (tunnelId == null) { |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType)); |
| if (consumerId != null) { |
| resourceService.release(consumerId); |
| } |
| return false; |
| } |
| |
| if (consumerId != null) { |
| // Store tunnel consumer id in LSP-Label store. |
| PceccTunnelInfo pceccTunnelInfo = new PceccTunnelInfo(null, consumerId); |
| pceStore.addTunnelInfo(tunnelId, pceccTunnelInfo); |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean updatePath(TunnelId tunnelId, List<Constraint> constraints) { |
| checkNotNull(tunnelId); |
| Set<Path> computedPathSet = null; |
| Tunnel tunnel = tunnelService.queryTunnel(tunnelId); |
| |
| if (tunnel == null) { |
| return false; |
| } |
| |
| if (tunnel.type() != MPLS || FALSE.equalsIgnoreCase(tunnel.annotations().value(DELEGATE))) { |
| // Only delegated LSPs can be updated. |
| return false; |
| } |
| |
| List<Link> links = tunnel.path().links(); |
| String lspSigType = tunnel.annotations().value(LSP_SIG_TYPE); |
| double bwConstraintValue = 0; |
| String costType = null; |
| SharedBandwidthConstraint shBwConstraint = null; |
| BandwidthConstraint bwConstraint = null; |
| CostConstraint costConstraint = null; |
| |
| if (constraints != null) { |
| // Call path computation in shared bandwidth mode. |
| Iterator<Constraint> iterator = constraints.iterator(); |
| while (iterator.hasNext()) { |
| Constraint constraint = iterator.next(); |
| if (constraint instanceof BandwidthConstraint) { |
| bwConstraint = (BandwidthConstraint) constraint; |
| bwConstraintValue = bwConstraint.bandwidth().bps(); |
| } else if (constraint instanceof CostConstraint) { |
| costConstraint = (CostConstraint) constraint; |
| costType = costConstraint.type().name(); |
| } |
| } |
| |
| // Remove and keep the cost constraint at the end of the list of constraints. |
| if (costConstraint != null) { |
| constraints.remove(costConstraint); |
| } |
| |
| Bandwidth existingBwValue = null; |
| String existingBwAnnotation = tunnel.annotations().value(BANDWIDTH); |
| if (existingBwAnnotation != null) { |
| existingBwValue = Bandwidth.bps(Double.parseDouble(existingBwAnnotation)); |
| |
| /* |
| * The computation is a shared bandwidth constraint based, so need to remove bandwidth constraint which |
| * has been utilized to create shared bandwidth constraint. |
| */ |
| if (bwConstraint != null) { |
| constraints.remove(bwConstraint); |
| } |
| } |
| |
| if (existingBwValue != null) { |
| shBwConstraint = new SharedBandwidthConstraint(links, existingBwValue, bwConstraint.bandwidth()); |
| constraints.add(shBwConstraint); |
| } |
| } else { |
| constraints = new LinkedList<>(); |
| } |
| |
| constraints.add(CapabilityConstraint.of(CapabilityType.valueOf(lspSigType))); |
| if (costConstraint != null) { |
| constraints.add(costConstraint); |
| } |
| |
| computedPathSet = computePath(links.get(0).src().deviceId(), links.get(links.size() - 1).dst().deviceId(), |
| constraints); |
| |
| // NO-PATH |
| if (computedPathSet.isEmpty()) { |
| return false; |
| } |
| |
| Builder annotationBuilder = DefaultAnnotations.builder(); |
| annotationBuilder.set(BANDWIDTH, String.valueOf(bwConstraintValue)); |
| if (costType != null) { |
| annotationBuilder.set(COST_TYPE, costType); |
| } |
| annotationBuilder.set(LSP_SIG_TYPE, lspSigType); |
| annotationBuilder.set(PCE_INIT, TRUE); |
| annotationBuilder.set(DELEGATE, TRUE); |
| annotationBuilder.set(PLSP_ID, tunnel.annotations().value(PLSP_ID)); |
| annotationBuilder.set(PCC_TUNNEL_ID, tunnel.annotations().value(PCC_TUNNEL_ID)); |
| |
| Path computedPath = computedPathSet.iterator().next(); |
| LabelStack labelStack = null; |
| TunnelConsumerId consumerId = null; |
| LspType lspType = LspType.valueOf(lspSigType); |
| long localLspId = 0; |
| if (lspType != WITH_SIGNALLING) { |
| /* |
| * Local LSP id which is assigned by RSVP for RSVP signalled LSPs, will be assigned by |
| * PCE for non-RSVP signalled LSPs. |
| */ |
| localLspId = getNextLocalLspId(); |
| annotationBuilder.set(LOCAL_LSP_ID, String.valueOf(localLspId)); |
| |
| if (lspType == SR_WITHOUT_SIGNALLING) { |
| labelStack = srTeHandler.computeLabelStack(computedPath); |
| // Failed to form a label stack. |
| if (labelStack == null) { |
| return false; |
| } |
| } |
| } |
| |
| Tunnel updatedTunnel = new DefaultTunnel(null, tunnel.src(), tunnel.dst(), MPLS, INIT, null, null, |
| tunnel.tunnelName(), computedPath, |
| labelStack, annotationBuilder.build()); |
| |
| // Allocate shared bandwidth. |
| if (bwConstraintValue != 0) { |
| consumerId = reserveBandwidth(computedPath, bwConstraintValue, shBwConstraint); |
| if (consumerId == null) { |
| return false; |
| } |
| } |
| |
| TunnelId updatedTunnelId = tunnelService.setupTunnel(appId, links.get(0).src().deviceId(), updatedTunnel, |
| computedPath); |
| |
| if (updatedTunnelId == null) { |
| if (consumerId != null) { |
| resourceService.release(consumerId); |
| } |
| return false; |
| } |
| |
| if (consumerId != null) { |
| // Store tunnel consumer id in LSP-Label store. |
| PceccTunnelInfo pceccTunnelInfo = new PceccTunnelInfo(null, consumerId); |
| pceStore.addTunnelInfo(updatedTunnelId, pceccTunnelInfo); |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean releasePath(TunnelId tunnelId) { |
| checkNotNull(tunnelId); |
| // 1. Query Tunnel from Tunnel manager. |
| Tunnel tunnel = tunnelService.queryTunnel(tunnelId); |
| |
| if (tunnel == null) { |
| return false; |
| } |
| |
| // 2. Call tunnel service. |
| return tunnelService.downTunnel(appId, tunnel.tunnelId()); |
| } |
| |
| @Override |
| public Iterable<Tunnel> queryAllPath() { |
| return tunnelService.queryTunnel(MPLS); |
| } |
| |
| @Override |
| public Tunnel queryPath(TunnelId tunnelId) { |
| return tunnelService.queryTunnel(tunnelId); |
| } |
| |
| /** |
| * Returns the next local LSP identifier to be used either by getting from |
| * freed list if available otherwise generating a new one. |
| * |
| * @return value of local LSP identifier |
| */ |
| private short getNextLocalLspId() { |
| // If there is any free id use it. Otherwise generate new id. |
| if (localLspIdFreeList.isEmpty()) { |
| return (short) localLspIdIdGen.getNewId(); |
| } |
| Iterator<Short> it = localLspIdFreeList.iterator(); |
| Short value = it.next(); |
| localLspIdFreeList.remove(value); |
| return value; |
| } |
| |
| protected class TeConstraintBasedLinkWeight implements LinkWeight { |
| |
| private final List<Constraint> constraints; |
| |
| /** |
| * Creates a new edge-weight function capable of evaluating links |
| * on the basis of the specified constraints. |
| * |
| * @param constraints path constraints |
| */ |
| public TeConstraintBasedLinkWeight(List<Constraint> constraints) { |
| if (constraints == null) { |
| this.constraints = Collections.emptyList(); |
| } else { |
| this.constraints = ImmutableList.copyOf(constraints); |
| } |
| } |
| |
| @Override |
| public double weight(TopologyEdge edge) { |
| if (!constraints.iterator().hasNext()) { |
| //Takes default cost/hopcount as 1 if no constraints specified |
| return 1.0; |
| } |
| |
| Iterator<Constraint> it = constraints.iterator(); |
| double cost = 1; |
| |
| //If any constraint fails return -1 also value of cost returned from cost constraint can't be negative |
| while (it.hasNext() && cost > 0) { |
| Constraint constraint = it.next(); |
| if (constraint instanceof CapabilityConstraint) { |
| cost = ((CapabilityConstraint) constraint).isValidLink(edge.link(), deviceService, |
| netCfgService) ? 1 : -1; |
| } else { |
| cost = constraint.cost(edge.link(), resourceService::isAvailable); |
| } |
| } |
| return cost; |
| } |
| } |
| |
| //TODO: annotations used for temporarily later projection/network config will be used |
| private class InternalTopologyListener implements TopologyListener { |
| @Override |
| public void event(TopologyEvent event) { |
| event.reasons().forEach(e -> { |
| //If event type is link removed, get the impacted tunnel |
| if (e instanceof LinkEvent) { |
| LinkEvent linkEvent = (LinkEvent) e; |
| if (linkEvent.type() == LinkEvent.Type.LINK_REMOVED) { |
| tunnelService.queryTunnel(MPLS).forEach(t -> { |
| if (t.path().links().contains((e.subject()))) { |
| // Check whether this ONOS instance is master for ingress device if yes, |
| // recompute and send update |
| checkForMasterAndUpdateTunnel(t.path().src().deviceId(), t); |
| } |
| }); |
| } |
| } |
| }); |
| } |
| } |
| |
| private boolean checkForMasterAndUpdateTunnel(DeviceId src, Tunnel tunnel) { |
| /** |
| * Master of ingress node will recompute and also delegation flag must be set. |
| */ |
| if (mastershipService.isLocalMaster(src) |
| && Boolean.valueOf(tunnel.annotations().value(DELEGATE)) != null) { |
| LinkedList<Constraint> constraintList = new LinkedList<>(); |
| |
| if (tunnel.annotations().value(BANDWIDTH) != null) { |
| //Requested bandwidth will be same as previous allocated bandwidth for the tunnel |
| BandwidthConstraint localConst = new BandwidthConstraint(Bandwidth.bps(Double.parseDouble(tunnel |
| .annotations().value(BANDWIDTH)))); |
| constraintList.add(localConst); |
| } |
| if (tunnel.annotations().value(COST_TYPE) != null) { |
| constraintList.add(CostConstraint.of(CostConstraint.Type.valueOf(tunnel.annotations().value( |
| COST_TYPE)))); |
| } |
| |
| /* |
| * If tunnel was UP after recomputation failed then store failed path in PCE store send PCIntiate(remove) |
| * and If tunnel is failed and computation fails nothing to do because tunnel status will be same[Failed] |
| */ |
| if (!updatePath(tunnel.tunnelId(), constraintList) && !tunnel.state().equals(Tunnel.State.FAILED)) { |
| // If updation fails store in PCE store as failed path |
| // then PCInitiate (Remove) |
| pceStore.addFailedPathInfo(new PcePathInfo(tunnel.path().src().deviceId(), tunnel |
| .path().dst().deviceId(), tunnel.tunnelName().value(), constraintList, |
| LspType.valueOf(tunnel.annotations().value(LSP_SIG_TYPE)))); |
| //Release that tunnel calling PCInitiate |
| releasePath(tunnel.tunnelId()); |
| } |
| } |
| |
| return false; |
| } |
| |
| // Allocates the bandwidth locally for PCECC tunnels. |
| private TunnelConsumerId reserveBandwidth(Path computedPath, double bandwidthConstraint, |
| SharedBandwidthConstraint shBwConstraint) { |
| checkNotNull(computedPath); |
| checkNotNull(bandwidthConstraint); |
| Resource resource = null; |
| double bwToAllocate = 0; |
| |
| TunnelConsumerId consumer = TunnelConsumerId.valueOf(tunnelConsumerIdGen.getNewId()); |
| |
| /** |
| * Shared bandwidth sub-case : Lesser bandwidth required than original - |
| * No reservation required. |
| */ |
| Double additionalBwValue = null; |
| if (shBwConstraint != null) { |
| additionalBwValue = ((bandwidthConstraint - shBwConstraint.sharedBwValue().bps()) <= 0) ? null |
| : (bandwidthConstraint - shBwConstraint.sharedBwValue().bps()); |
| } |
| |
| Optional<ResourceAllocation> resAlloc = null; |
| for (Link link : computedPath.links()) { |
| bwToAllocate = 0; |
| if ((shBwConstraint != null) && (shBwConstraint.links().contains(link))) { |
| if (additionalBwValue != null) { |
| bwToAllocate = bandwidthConstraint - additionalBwValue; |
| } |
| } else { |
| bwToAllocate = bandwidthConstraint; |
| } |
| |
| /** |
| * In shared bandwidth cases, where new BW is lesser than old BW, it |
| * is not required to allocate anything. |
| */ |
| if (bwToAllocate != 0) { |
| resource = Resources.continuous(link.src().deviceId(), link.src().port(), Bandwidth.class) |
| .resource(bwToAllocate); |
| resAlloc = resourceService.allocate(consumer, resource); |
| |
| // If allocation for any link fails, then release the partially allocated bandwidth. |
| if (!resAlloc.isPresent()) { |
| resourceService.release(consumer); |
| return null; |
| } |
| } |
| } |
| |
| /* |
| * Note: Storing of tunnel consumer id is done by caller of bandwidth reservation function. So deleting tunnel |
| * consumer id should be done by caller of bandwidth releasing function. This will prevent ambiguities related |
| * to who is supposed to store/delete. |
| */ |
| return consumer; |
| } |
| |
| /* |
| * Deallocates the bandwidth which is reserved locally for PCECC tunnels. |
| */ |
| private void releaseBandwidth(Tunnel tunnel) { |
| // Between same source and destination, search the tunnel with same symbolic path name. |
| Collection<Tunnel> tunnelQueryResult = tunnelService.queryTunnel(tunnel.src(), tunnel.dst()); |
| Tunnel newTunnel = null; |
| for (Tunnel tunnelObj : tunnelQueryResult) { |
| if (tunnel.tunnelName().value().equals(tunnelObj.tunnelName().value())) { |
| newTunnel = tunnelObj; |
| break; |
| } |
| } |
| |
| // Even if one link is shared, the bandwidth release should happen based on shared mechanism. |
| boolean isLinkShared = false; |
| if (newTunnel != null) { |
| for (Link link : tunnel.path().links()) { |
| if (newTunnel.path().links().contains(link)) { |
| isLinkShared = true; |
| break; |
| } |
| } |
| } |
| |
| if (isLinkShared) { |
| releaseSharedBandwidth(newTunnel, tunnel); |
| return; |
| } |
| |
| resourceService.release(pceStore.getTunnelInfo(tunnel.tunnelId()).tunnelConsumerId()); |
| return; |
| |
| /* |
| * Note: Storing of tunnel consumer id is done by caller of bandwidth reservation function. So deleting tunnel |
| * consumer id should be done by caller of bandwidth releasing function. This will prevent ambiguities related |
| * to who is supposed to store/delete. |
| */ |
| } |
| |
| /** |
| * Re-allocates the bandwidth for the tunnel for which the bandwidth was |
| * allocated in shared mode initially. |
| */ |
| private synchronized void releaseSharedBandwidth(Tunnel newTunnel, Tunnel oldTunnel) { |
| // 1. Release old tunnel's bandwidth. |
| resourceService.release(pceStore.getTunnelInfo(oldTunnel.tunnelId()).tunnelConsumerId()); |
| |
| // 2. Release new tunnel's bandwidth |
| ResourceConsumer consumer = pceStore.getTunnelInfo(newTunnel.tunnelId()).tunnelConsumerId(); |
| resourceService.release(consumer); |
| |
| // 3. Allocate new tunnel's complete bandwidth. |
| double bandwidth = Double.parseDouble(newTunnel.annotations().value(BANDWIDTH)); |
| Resource resource; |
| |
| for (Link link : newTunnel.path().links()) { |
| resource = Resources.continuous(link.src().deviceId(), link.src().port(), Bandwidth.class) |
| .resource(bandwidth); |
| resourceService.allocate(consumer, resource); // Reusing new tunnel's TunnelConsumerId intentionally. |
| |
| } |
| } |
| |
| /** |
| * Allocates node label to specific device. |
| * |
| * @param specificDevice device to which node label needs to be allocated |
| */ |
| public void allocateNodeLabel(Device specificDevice) { |
| checkNotNull(specificDevice, DEVICE_NULL); |
| |
| DeviceId deviceId = specificDevice.id(); |
| |
| // Retrieve lsrId of a specific device |
| if (specificDevice.annotations() == null) { |
| log.debug("Device {} does not have annotations.", specificDevice.toString()); |
| return; |
| } |
| |
| String lsrId = specificDevice.annotations().value(LSRID); |
| if (lsrId == null) { |
| log.debug("Unable to retrieve lsr-id of a device {}.", specificDevice.toString()); |
| return; |
| } |
| |
| // Get capability config from netconfig |
| DeviceCapability cfg = netCfgService.getConfig(DeviceId.deviceId(lsrId), DeviceCapability.class); |
| if (cfg == null) { |
| log.error("Unable to find corresponding capability for a lsrd {} from NetConfig.", lsrId); |
| // Save info. When PCEP session is comes up then allocate node-label |
| lsrIdDeviceIdMap.put(lsrId, specificDevice.id()); |
| return; |
| } |
| |
| // Check whether device has SR-TE Capability |
| if (cfg.labelStackCap()) { |
| if (!srTeHandler.allocateNodeLabel(deviceId, lsrId)) { |
| log.error("Node label allocation for a device id {} has failed.", deviceId.toString()); |
| } |
| } |
| } |
| |
| /** |
| * Releases node label of a specific device. |
| * |
| * @param specificDevice this device label and lsr-id information will be |
| * released in other existing devices |
| */ |
| public void releaseNodeLabel(Device specificDevice) { |
| checkNotNull(specificDevice, DEVICE_NULL); |
| |
| DeviceId deviceId = specificDevice.id(); |
| |
| // Retrieve lsrId of a specific device |
| if (specificDevice.annotations() == null) { |
| log.debug("Device {} does not have annotations.", specificDevice.toString()); |
| return; |
| } |
| |
| String lsrId = specificDevice.annotations().value(LSRID); |
| if (lsrId == null) { |
| log.debug("Unable to retrieve lsr-id of a device {}.", specificDevice.toString()); |
| return; |
| } |
| |
| // Get capability config from netconfig |
| DeviceCapability cfg = netCfgService.getConfig(DeviceId.deviceId(lsrId), DeviceCapability.class); |
| if (cfg == null) { |
| log.error("Unable to find corresponding capabilty for a lsrd {} from NetConfig.", lsrId); |
| return; |
| } |
| |
| // Check whether device has SR-TE Capability |
| if (cfg.labelStackCap()) { |
| if (!srTeHandler.releaseNodeLabel(deviceId, lsrId)) { |
| log.error("Unable to release node label for a device id {}.", deviceId.toString()); |
| } |
| } |
| } |
| |
| /** |
| * Allocates adjacency label for a link. |
| * |
| * @param link link |
| */ |
| public void allocateAdjacencyLabel(Link link) { |
| checkNotNull(link, LINK_NULL); |
| |
| Device specificDevice = deviceService.getDevice(link.src().deviceId()); |
| DeviceId deviceId = specificDevice.id(); |
| |
| // Retrieve lsrId of a specific device |
| if (specificDevice.annotations() == null) { |
| log.debug("Device {} does not have annotations.", specificDevice.toString()); |
| return; |
| } |
| |
| String lsrId = specificDevice.annotations().value(LSRID); |
| if (lsrId == null) { |
| log.debug("Unable to retrieve lsr-id of a device {}.", specificDevice.toString()); |
| return; |
| } |
| |
| // Get capability config from netconfig |
| DeviceCapability cfg = netCfgService.getConfig(DeviceId.deviceId(lsrId), DeviceCapability.class); |
| if (cfg == null) { |
| log.error("Unable to find corresponding capabilty for a lsrd {} from NetConfig.", lsrId); |
| // Save info. When PCEP session comes up then allocate adjacency |
| // label |
| if (lsrIdDeviceIdMap.get(lsrId) != null) { |
| lsrIdDeviceIdMap.put(lsrId, specificDevice.id()); |
| } |
| return; |
| } |
| |
| // Check whether device has SR-TE Capability |
| if (cfg.labelStackCap()) { |
| if (!srTeHandler.allocateAdjacencyLabel(link)) { |
| log.error("Unable to allocate adjacency label for a link {}.", link.toString()); |
| return; |
| } |
| } |
| |
| return; |
| } |
| |
| /** |
| * Releases allocated adjacency label of a link. |
| * |
| * @param link link |
| */ |
| public void releaseAdjacencyLabel(Link link) { |
| checkNotNull(link, LINK_NULL); |
| |
| Device specificDevice = deviceService.getDevice(link.src().deviceId()); |
| DeviceId deviceId = specificDevice.id(); |
| |
| // Retrieve lsrId of a specific device |
| if (specificDevice.annotations() == null) { |
| log.debug("Device {} does not have annotations.", specificDevice.toString()); |
| return; |
| } |
| |
| String lsrId = specificDevice.annotations().value(LSRID); |
| if (lsrId == null) { |
| log.debug("Unable to retrieve lsr-id of a device {}.", specificDevice.toString()); |
| return; |
| } |
| |
| // Get capability config from netconfig |
| DeviceCapability cfg = netCfgService.getConfig(DeviceId.deviceId(lsrId), DeviceCapability.class); |
| if (cfg == null) { |
| log.error("Unable to find corresponding capabilty for a lsrd {} from NetConfig.", lsrId); |
| return; |
| } |
| |
| // Check whether device has SR-TE Capability |
| if (cfg.labelStackCap()) { |
| if (!srTeHandler.releaseAdjacencyLabel(link)) { |
| log.error("Unable to release adjacency labels for a link {}.", link.toString()); |
| return; |
| } |
| } |
| |
| return; |
| } |
| |
| /* |
| * Handle device events. |
| */ |
| private class InternalDeviceListener implements DeviceListener { |
| @Override |
| public void event(DeviceEvent event) { |
| Device specificDevice = (Device) event.subject(); |
| if (specificDevice == null) { |
| log.error("Unable to find device from device event."); |
| return; |
| } |
| |
| switch (event.type()) { |
| |
| case DEVICE_ADDED: |
| // Node-label allocation is being done during Label DB Sync. |
| // So, when device is detected, no need to do node-label |
| // allocation. |
| break; |
| |
| case DEVICE_REMOVED: |
| // Release node-label |
| if (mastershipService.getLocalRole(specificDevice.id()) == MastershipRole.MASTER) { |
| releaseNodeLabel(specificDevice); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| } |
| |
| /* |
| * Handle link events. |
| */ |
| private class InternalLinkListener implements LinkListener { |
| @Override |
| public void event(LinkEvent event) { |
| Link link = (Link) event.subject(); |
| |
| switch (event.type()) { |
| |
| case LINK_ADDED: |
| // Allocate adjacency label |
| if (mastershipService.getLocalRole(link.src().deviceId()) == MastershipRole.MASTER) { |
| allocateAdjacencyLabel(link); |
| } |
| break; |
| |
| case LINK_REMOVED: |
| // Release adjacency label |
| if (mastershipService.getLocalRole(link.src().deviceId()) == MastershipRole.MASTER) { |
| releaseAdjacencyLabel(link); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| } |
| |
| // Listens on tunnel events. |
| private class InnerTunnelListener implements TunnelListener { |
| @Override |
| public void event(TunnelEvent event) { |
| // Event gets generated with old tunnel object. |
| Tunnel tunnel = event.subject(); |
| if (tunnel.type() != MPLS) { |
| return; |
| } |
| |
| LspType lspType = LspType.valueOf(tunnel.annotations().value(LSP_SIG_TYPE)); |
| String tunnelBandwidth = tunnel.annotations().value(BANDWIDTH); |
| double bwConstraintValue = 0; |
| if (tunnelBandwidth != null) { |
| bwConstraintValue = Double.parseDouble(tunnelBandwidth); |
| } |
| |
| switch (event.type()) { |
| case TUNNEL_ADDED: |
| // Allocate bandwidth for non-initiated, delegated LSPs with non-zero bandwidth (learned LSPs). |
| String pceInit = tunnel.annotations().value(PCE_INIT); |
| if (FALSE.equalsIgnoreCase(pceInit) |
| && bwConstraintValue != 0) { |
| reserveBandwidth(tunnel.path(), bwConstraintValue, null); |
| } |
| break; |
| |
| case TUNNEL_UPDATED: |
| // Allocate/send labels for basic PCECC tunnels. |
| if ((tunnel.state() == ESTABLISHED) && (lspType == WITHOUT_SIGNALLING_AND_WITHOUT_SR) |
| && (mastershipService.getLocalRole(tunnel.path().src().deviceId()) == MastershipRole.MASTER)) { |
| if (!crHandler.allocateLabel(tunnel)) { |
| log.error("Unable to allocate labels for a tunnel {}.", tunnel.toString()); |
| } |
| } |
| |
| if (tunnel.state() == UNSTABLE) { |
| /* |
| * During LSP DB sync if PCC doesn't report LSP which was PCE initiated, it's state is turned into |
| * unstable so that it can be setup again. Add into failed path store so that it can be recomputed |
| * and setup while global reoptimization. |
| */ |
| |
| List<Constraint> constraints = new LinkedList<>(); |
| String bandwidth = tunnel.annotations().value(BANDWIDTH); |
| if (bandwidth != null) { |
| constraints.add(new BandwidthConstraint(Bandwidth |
| .bps(Double.parseDouble(bandwidth)))); |
| } |
| |
| String costType = tunnel.annotations().value(COST_TYPE); |
| if (costType != null) { |
| CostConstraint costConstraint = new CostConstraint(CostConstraint.Type.valueOf(costType)); |
| constraints.add(costConstraint); |
| } |
| |
| constraints.add(CapabilityConstraint |
| .of(CapabilityType.valueOf(tunnel.annotations().value(LSP_SIG_TYPE)))); |
| |
| List<Link> links = tunnel.path().links(); |
| pceStore.addFailedPathInfo(new PcePathInfo(links.get(0).src().deviceId(), |
| links.get(links.size() - 1).dst().deviceId(), |
| tunnel.tunnelName().value(), constraints, lspType)); |
| } |
| break; |
| |
| case TUNNEL_REMOVED: |
| if (lspType != WITH_SIGNALLING) { |
| localLspIdFreeList.add(Short.valueOf(tunnel.annotations().value(LOCAL_LSP_ID))); |
| } |
| |
| // If not zero bandwidth, and delegated (initiated LSPs will also be delegated). |
| if (bwConstraintValue != 0) { |
| releaseBandwidth(event.subject()); |
| |
| // Release basic PCECC labels. |
| if (lspType == WITHOUT_SIGNALLING_AND_WITHOUT_SR) { |
| // Delete stored tunnel consumer id from PCE store (while still retaining label list.) |
| PceccTunnelInfo pceccTunnelInfo = pceStore.getTunnelInfo(tunnel.tunnelId()); |
| pceccTunnelInfo.tunnelConsumerId(null); |
| if (mastershipService.getLocalRole(tunnel.path().src().deviceId()) == MastershipRole.MASTER) { |
| crHandler.releaseLabel(tunnel); |
| } |
| } else { |
| pceStore.removeTunnelInfo(tunnel.tunnelId()); |
| } |
| } |
| break; |
| |
| default: |
| break; |
| |
| } |
| return; |
| } |
| } |
| |
| private class InternalConfigListener implements NetworkConfigListener { |
| |
| @Override |
| public void event(NetworkConfigEvent event) { |
| |
| if ((event.type() == NetworkConfigEvent.Type.CONFIG_ADDED) |
| && event.configClass().equals(DeviceCapability.class)) { |
| |
| DeviceId deviceIdLsrId = (DeviceId) event.subject(); |
| String lsrId = deviceIdLsrId.toString(); |
| DeviceId deviceId = lsrIdDeviceIdMap.get(lsrId); |
| if (deviceId == null) { |
| log.debug("Unable to find device id for a lsr-id {} from lsr-id and device-id map.", lsrId); |
| return; |
| } |
| |
| DeviceCapability cfg = netCfgService.getConfig(DeviceId.deviceId(lsrId), DeviceCapability.class); |
| if (cfg == null) { |
| log.error("Unable to find corresponding capabilty for a lsrd {}.", lsrId); |
| return; |
| } |
| |
| if (cfg.labelStackCap()) { |
| if (mastershipService.getLocalRole(deviceId) == MastershipRole.MASTER) { |
| // Allocate node-label |
| if (!srTeHandler.allocateNodeLabel(deviceId, lsrId)) { |
| log.error("Node label allocation for a device id {} has failed.", deviceId.toString()); |
| } |
| |
| // Allocate adjacency label to links which are |
| // originated from this specific device id |
| Set<Link> links = linkService.getDeviceEgressLinks(deviceId); |
| for (Link link : links) { |
| if (!srTeHandler.allocateAdjacencyLabel(link)) { |
| log.debug("Unable to allocate adjacency labels for a link {}.", link.toString()); |
| return; |
| } |
| } |
| } |
| } |
| |
| // Remove lsrId info from map |
| lsrIdDeviceIdMap.remove(lsrId); |
| } |
| } |
| } |
| |
| private boolean syncLabelDb(DeviceId deviceId) { |
| checkNotNull(deviceId); |
| |
| Device specificDevice = deviceService.getDevice(deviceId); |
| if (specificDevice == null) { |
| log.error("Unable to find device for specific device id {}.", deviceId.toString()); |
| return false; |
| } |
| |
| Map<DeviceId, LabelResourceId> globalNodeLabelMap = pceStore.getGlobalNodeLabels(); |
| |
| for (Entry<DeviceId, LabelResourceId> entry : globalNodeLabelMap.entrySet()) { |
| |
| // Convert from DeviceId to TunnelEndPoint |
| Device srcDevice = deviceService.getDevice(entry.getKey()); |
| |
| /* |
| * If there is a slight difference in timing such that if device subsystem has removed the device but PCE |
| * store still has it, just ignore such devices. |
| */ |
| if (srcDevice == null) { |
| continue; |
| } |
| |
| String srcLsrId = srcDevice.annotations().value(LSRID); |
| if (srcLsrId == null) { |
| continue; |
| } |
| |
| srTeHandler.advertiseNodeLabelRule(deviceId, |
| entry.getValue(), |
| IpPrefix.valueOf(IpAddress.valueOf(srcLsrId), PREFIX_LENGTH), |
| Objective.Operation.ADD, false); |
| } |
| |
| Map<Link, LabelResourceId> adjLabelMap = pceStore.getAdjLabels(); |
| for (Entry<Link, LabelResourceId> entry : adjLabelMap.entrySet()) { |
| if (entry.getKey().src().deviceId().equals(deviceId)) { |
| srTeHandler.installAdjLabelRule(deviceId, |
| entry.getValue(), |
| entry.getKey().src().port(), |
| entry.getKey().dst().port(), |
| Objective.Operation.ADD); |
| } |
| } |
| |
| srTeHandler.advertiseNodeLabelRule(deviceId, |
| LabelResourceId.labelResourceId(0), |
| IpPrefix.valueOf(END_OF_SYNC_IP_PREFIX), |
| Objective.Operation.ADD, true); |
| if (mastershipService.getLocalRole(specificDevice.id()) == MastershipRole.MASTER) { |
| // Allocate node-label to this specific device. |
| allocateNodeLabel(specificDevice); |
| |
| // Allocate adjacency label |
| Set<Link> links = linkService.getDeviceEgressLinks(specificDevice.id()); |
| if (links != null) { |
| for (Link link : links) { |
| allocateAdjacencyLabel(link); |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| // Process the packet received. |
| private class PcepPacketProcessor implements PacketProcessor { |
| // Process the packet received and in our case initiates the label DB sync. |
| @Override |
| public void process(PacketContext context) { |
| // Stop processing if the packet has been handled, since we |
| // can't do any more to it. |
| if (context.isHandled()) { |
| return; |
| } |
| |
| InboundPacket pkt = context.inPacket(); |
| if (pkt == null) { |
| return; |
| } |
| |
| Ethernet ethernet = pkt.parsed(); |
| if (ethernet == null || ethernet.getEtherType() != Ethernet.TYPE_IPV4) { |
| return; |
| } |
| |
| IPv4 ipPacket = (IPv4) ethernet.getPayload(); |
| if (ipPacket == null || ipPacket.getProtocol() != IPv4.PROTOCOL_TCP) { |
| return; |
| } |
| |
| TCP tcp = (TCP) ipPacket.getPayload(); |
| if (tcp == null || tcp.getDestinationPort() != PCEP_PORT) { |
| return; |
| } |
| |
| syncLabelDb(pkt.receivedFrom().deviceId()); |
| } |
| } |
| |
| //Computes path from tunnel store and also path failed to setup. |
| private void callForOptimization() { |
| //Recompute the LSPs which it was delegated [LSPs stored in PCE store (failed paths)] |
| for (PcePathInfo failedPathInfo : pceStore.getFailedPathInfos()) { |
| checkForMasterAndSetupPath(failedPathInfo); |
| } |
| |
| //Recompute the LSPs for which it was delegated [LSPs stored in tunnel store] |
| tunnelService.queryTunnel(MPLS).forEach(t -> { |
| checkForMasterAndUpdateTunnel(t.path().src().deviceId(), t); |
| }); |
| } |
| |
| private boolean checkForMasterAndSetupPath(PcePathInfo failedPathInfo) { |
| /** |
| * Master of ingress node will setup the path failed stored in PCE store. |
| */ |
| if (mastershipService.isLocalMaster(failedPathInfo.src())) { |
| if (setupPath(failedPathInfo.src(), failedPathInfo.dst(), failedPathInfo.name(), |
| failedPathInfo.constraints(), failedPathInfo.lspType())) { |
| // If computation is success remove that path |
| pceStore.removeFailedPathInfo(failedPathInfo); |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| //Timer to call global optimization |
| private class GlobalOptimizationTimer implements Runnable { |
| |
| public GlobalOptimizationTimer() { |
| } |
| |
| @Override |
| public void run() { |
| callForOptimization(); |
| } |
| } |
| } |