| /* |
| * Copyright 2016-present Open Networking Foundation |
| * |
| * 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 org.onosproject.net.DisjointPath; |
| import java.util.ArrayList; |
| 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.Set; |
| 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.util.Bandwidth; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| 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.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.LinkKey; |
| import org.onosproject.net.config.ConfigFactory; |
| import org.onosproject.net.config.NetworkConfigRegistry; |
| import org.onosproject.net.config.NetworkConfigService; |
| import org.onosproject.net.DefaultAnnotations; |
| import org.onosproject.net.DefaultAnnotations.Builder; |
| import org.onosproject.net.DefaultPath; |
| import org.onosproject.net.Device; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Link; |
| import org.onosproject.net.NetworkResource; |
| import org.onosproject.net.Path; |
| import org.onosproject.net.config.basics.SubjectFactories; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.intent.Constraint; |
| import org.onosproject.net.link.LinkEvent; |
| import org.onosproject.net.MastershipRole; |
| import org.onosproject.bandwidthmgr.api.BandwidthMgmtService; |
| 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.PceBandwidthConstraint; |
| import org.onosproject.pce.pceservice.constraint.SharedBandwidthConstraint; |
| import org.onosproject.net.resource.Resource; |
| import org.onosproject.net.resource.ResourceAllocation; |
| 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.api.PceStore; |
| import org.onosproject.pcep.api.DeviceCapability; |
| import org.onosproject.pcep.api.TeLinkConfig; |
| 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 com.google.common.collect.Sets; |
| |
| import static org.onosproject.incubator.net.tunnel.Tunnel.State.INIT; |
| import static org.onosproject.incubator.net.tunnel.Tunnel.State.UNSTABLE; |
| import static org.onosproject.incubator.net.tunnel.Tunnel.Type.MPLS; |
| import static org.onosproject.pce.pceservice.LspType.WITH_SIGNALLING; |
| 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; |
| |
| /** |
| * 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; |
| 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 String LSRID = "lsrId"; |
| private static final String TRUE = "true"; |
| private static final String FALSE = "false"; |
| public static final int PCEP_PORT = 4189; |
| |
| private IdGenerator localLspIdIdGen; |
| protected DistributedSet<Short> localLspIdFreeList; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @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 DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected StorageService storageService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected NetworkConfigService netCfgService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected MastershipService mastershipService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected TopologyService topologyService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected BandwidthMgmtService bandwidthMgmtService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected NetworkConfigRegistry netConfigRegistry; |
| |
| private TunnelListener listener = new InnerTunnelListener(); |
| private ApplicationId appId; |
| |
| private final TopologyListener topologyListener = new InternalTopologyListener(); |
| public static final String LOAD_BALANCING_PATH_NAME = "loadBalancingPathName"; |
| |
| private List<TunnelId> rsvpTunnelsWithLocalBw = new ArrayList<>(); |
| |
| private final ConfigFactory<LinkKey, TeLinkConfig> configFactory = |
| new ConfigFactory<LinkKey, TeLinkConfig>(SubjectFactories.LINK_SUBJECT_FACTORY, |
| TeLinkConfig.class, "teLinkConfig") { |
| @Override |
| public TeLinkConfig createConfig() { |
| return new TeLinkConfig(); |
| } |
| }; |
| |
| /** |
| * Creates new instance of PceManager. |
| */ |
| public PceManager() { |
| } |
| |
| @Activate |
| protected void activate() { |
| appId = coreService.registerApplication(PCE_SERVICE_APP); |
| |
| tunnelService.addListener(listener); |
| |
| localLspIdIdGen = coreService.getIdGenerator(LOCAL_LSP_ID_GEN_TOPIC); |
| localLspIdIdGen.getNewId(); // To prevent 0, the 1st value generated from being used in protocol. |
| localLspIdFreeList = storageService.<Short>setBuilder() |
| .withName("pcepLocalLspIdDeletedList") |
| .withSerializer(Serializer.using(KryoNamespaces.API)) |
| .build() |
| .asDistributedSet(); |
| |
| topologyService.addListener(topologyListener); |
| netConfigRegistry.registerConfigFactory(configFactory); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| tunnelService.removeListener(listener); |
| topologyService.removeListener(topologyListener); |
| netConfigRegistry.unregisterConfigFactory(configFactory); |
| |
| 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)); |
| log.info("paths in computePath ::" + paths); |
| if (!paths.isEmpty()) { |
| return paths; |
| } |
| return ImmutableSet.of(); |
| } |
| |
| //Computes the partial path from partial computed path to specified dst. |
| private List<Path> computePartialPath(List<Path> computedPath, DeviceId src, DeviceId dst, |
| List<Constraint> constraints) { |
| int size = computedPath.size(); |
| Path path = null; |
| DeviceId deviceId = size == 0 ? src : |
| computedPath.get(size - 1).dst().deviceId(); |
| |
| Set<Path> tempComputePath = computePath(deviceId, dst, constraints); |
| |
| if (tempComputePath.isEmpty()) { |
| return null; |
| } |
| |
| //if path validation fails return null |
| //Validate computed path to avoid loop in the path |
| for (Path p : tempComputePath) { |
| if (pathValidation(computedPath, p)) { |
| path = p; |
| break; |
| } |
| } |
| if (path == null) { |
| return null; |
| } |
| |
| //Store the partial path result in a list |
| computedPath.add(path); |
| return computedPath; |
| } |
| |
| private List<DeviceId> createListOfDeviceIds(List<? extends NetworkResource> list) { |
| List<Link> links = new LinkedList<>(); |
| if (!list.isEmpty() && list.iterator().next() instanceof Path) { |
| for (Path path : (List<Path>) list) { |
| links.addAll(path.links()); |
| } |
| } else if (!list.isEmpty() && list.iterator().next() instanceof Link) { |
| links.addAll((List<Link>) list); |
| } |
| |
| //List of devices for new path computed |
| DeviceId source = null; |
| DeviceId destination = null; |
| List<DeviceId> devList = new LinkedList<>(); |
| |
| for (Link l : links) { |
| if (!devList.contains(l.src().deviceId())) { |
| devList.add(l.src().deviceId()); |
| } |
| if (!devList.contains(l.dst().deviceId())) { |
| devList.add(l.dst().deviceId()); |
| } |
| } |
| |
| return devList; |
| } |
| |
| //To detect loops in the path i.e if the partial paths has intersection node avoid it. |
| private boolean pathValidation(List<Path> partialPath, Path path) { |
| |
| //List of devices in new path computed |
| List<DeviceId> newPartialPathDevList; |
| newPartialPathDevList = createListOfDeviceIds(path.links()); |
| |
| //List of devices in partial computed path |
| List<DeviceId> partialComputedPathDevList; |
| partialComputedPathDevList = createListOfDeviceIds(partialPath); |
| |
| for (DeviceId deviceId : newPartialPathDevList) { |
| for (DeviceId devId : partialComputedPathDevList) { |
| if (!newPartialPathDevList.get(0).equals(deviceId) && |
| !partialComputedPathDevList.get(partialComputedPathDevList.size() - 1).equals(devId) |
| && deviceId.equals(devId)) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| //Returns final computed explicit path (list of partial computed paths). |
| private List<Path> computeExplicitPath(List<ExplicitPathInfo> explicitPathInfo, DeviceId src, DeviceId dst, |
| List<Constraint> constraints) { |
| List<Path> finalComputedPath = new LinkedList<>(); |
| for (ExplicitPathInfo info : explicitPathInfo) { |
| /* |
| * If explicit path object is LOOSE, |
| * 1) If specified as DeviceId (node) : |
| * If it is source , compute from source to destination (partial computation not required), |
| * otherwise compute from specified source to specified device |
| * 2) If specified as Link : |
| * Compute partial path from source to link's source , if path exists compute from link's source to dst |
| */ |
| if (info.type().equals(ExplicitPathInfo.Type.LOOSE)) { |
| if (info.value() instanceof DeviceId) { |
| // If deviceId is source no need to compute |
| if (!(info.value()).equals(src)) { |
| log.debug("computeExplicitPath :: Loose , device"); |
| finalComputedPath = computePartialPath(finalComputedPath, src, (DeviceId) info.value(), |
| constraints); |
| log.debug("finalComputedPath in computeExplicitPath ::" + finalComputedPath); |
| } |
| |
| } else if (info.value() instanceof Link) { |
| if ((((Link) info.value()).src().deviceId().equals(src)) |
| || (!finalComputedPath.isEmpty() |
| && finalComputedPath.get(finalComputedPath.size() - 1).dst().deviceId().equals( |
| ((Link) info.value()).src().deviceId()))) { |
| |
| finalComputedPath = computePartialPath(finalComputedPath, src, ((Link) info.value()).dst() |
| .deviceId(), constraints); |
| } else { |
| |
| finalComputedPath = computePartialPath(finalComputedPath, src, ((Link) info.value()).src() |
| .deviceId(), constraints) != null ? computePartialPath(finalComputedPath, src, |
| ((Link) info.value()).dst().deviceId(), constraints) : null; |
| } |
| } |
| /* |
| * If explicit path object is STRICT, |
| * 1) If specified as DeviceId (node) : |
| * Check whether partial computed path has reachable to strict specified node orde |
| * strict node is the source, if no set path as null else do nothing |
| * 2) If specified as Link : |
| * Check whether partial computed path has reachable to strict link's src, if yes compute |
| * path from strict link's src to link's dst (to include specified link) |
| */ |
| } else if (info.type().equals(ExplicitPathInfo.Type.STRICT)) { |
| if (info.value() instanceof DeviceId) { |
| log.debug("computeExplicitPath :: Strict , device"); |
| if (!(!finalComputedPath.isEmpty() && finalComputedPath.get(finalComputedPath.size() - 1).dst() |
| .deviceId().equals(info.value())) |
| && !info.value().equals(src)) { |
| finalComputedPath = null; |
| } |
| |
| } else if (info.value() instanceof Link) { |
| log.info("computeExplicitPath :: Strict"); |
| finalComputedPath = ((Link) info.value()).src().deviceId().equals(src) |
| || !finalComputedPath.isEmpty() |
| && finalComputedPath.get(finalComputedPath.size() - 1).dst().deviceId() |
| .equals(((Link) info.value()).src().deviceId()) ? computePartialPath( |
| finalComputedPath, src, ((Link) info.value()).dst().deviceId(), constraints) : null; |
| |
| //Log.info("computeExplicitPath :: (Link) info.value() " + (Link) info.value()); |
| //Log.info("computeExplicitPath :: finalComputedPath " + finalComputedPath); |
| |
| if (finalComputedPath != null && !finalComputedPath.get(finalComputedPath.size() - 1).links() |
| .contains((Link) info.value())) { |
| finalComputedPath = null; |
| } |
| } |
| } |
| if (finalComputedPath == null) { |
| return null; |
| } |
| } |
| // Destination is not reached in Partial computed path then compute till destination |
| if (finalComputedPath.isEmpty() || !finalComputedPath.isEmpty() |
| && !finalComputedPath.get(finalComputedPath.size() - 1).dst().deviceId().equals(dst)) { |
| |
| finalComputedPath = computePartialPath(finalComputedPath, src, dst, constraints); |
| if (finalComputedPath == null) { |
| return null; |
| } |
| } |
| |
| return finalComputedPath; |
| } |
| |
| @Override |
| public boolean setupPath(DeviceId src, DeviceId dst, String tunnelName, List<Constraint> constraints, |
| LspType lspType) { |
| return setupPath(src, dst, tunnelName, constraints, lspType, null, false); |
| } |
| |
| //[TODO:] handle requests in queue |
| @Override |
| public boolean setupPath(DeviceId src, DeviceId dst, String tunnelName, List<Constraint> constraints, |
| LspType lspType, List<ExplicitPathInfo> explicitPathInfo) { |
| return setupPath(src, dst, tunnelName, constraints, lspType, explicitPathInfo, false); |
| |
| } |
| |
| @Override |
| public boolean setupPath(DeviceId src, DeviceId dst, String tunnelName, List<Constraint> constraints, |
| LspType lspType, boolean loadBalancing) { |
| return setupPath(src, dst, tunnelName, constraints, lspType, null, loadBalancing); |
| } |
| |
| @Override |
| public boolean setupPath(DeviceId src, DeviceId dst, String tunnelName, List<Constraint> constraints, |
| LspType lspType, List<ExplicitPathInfo> explicitPathInfo, boolean loadBalancing) { |
| 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, explicitPathInfo, |
| loadBalancing)); |
| 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, explicitPathInfo, |
| loadBalancing)); |
| 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, explicitPathInfo, |
| loadBalancing)); |
| 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 PceBandwidthConstraint) { |
| bwConstraintValue = ((PceBandwidthConstraint) 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 = Sets.newLinkedHashSet(); |
| |
| if (loadBalancing) { |
| return setupDisjointPaths(src, dst, constraints, tunnelName, bwConstraintValue, lspType, costConstraint, |
| srcEndPoint, dstEndPoint); |
| } |
| |
| if (explicitPathInfo != null && !explicitPathInfo.isEmpty()) { |
| List<Path> finalComputedPath = computeExplicitPath(explicitPathInfo, src, dst, constraints); |
| if (finalComputedPath == null) { |
| return false; |
| } |
| |
| pceStore.tunnelNameExplicitPathInfoMap(tunnelName, explicitPathInfo); |
| List<Link> links = new LinkedList<>(); |
| double totalCost = 0; |
| // Add all partial computed paths |
| for (Path path : finalComputedPath) { |
| links.addAll(path.links()); |
| totalCost = totalCost + path.cost(); |
| } |
| computedPathSet.add(new DefaultPath(finalComputedPath.iterator().next().providerId(), links, totalCost)); |
| } else { |
| computedPathSet = computePath(src, dst, constraints); |
| } |
| |
| // NO-PATH |
| if (computedPathSet.isEmpty()) { |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType, explicitPathInfo, |
| loadBalancing)); |
| 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(); |
| |
| 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, |
| annotationBuilder.build()); |
| |
| // Allocate bandwidth for all tunnels. |
| if (bwConstraintValue != 0) { |
| if (!reserveBandwidth(computedPath, bwConstraintValue, null)) { |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, |
| lspType, explicitPathInfo, loadBalancing)); |
| return false; |
| } |
| } |
| |
| TunnelId tunnelId = tunnelService.setupTunnel(appId, src, tunnel, computedPath); |
| if (tunnelId == null) { |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType, explicitPathInfo, |
| loadBalancing)); |
| |
| if (bwConstraintValue != 0) { |
| computedPath.links().forEach(ln -> bandwidthMgmtService.releaseLocalReservedBw(LinkKey.linkKey(ln), |
| Double.parseDouble(tunnel.annotations().value(BANDWIDTH)))); |
| } |
| |
| return false; |
| } |
| |
| if (bwConstraintValue != 0 && lspType == WITH_SIGNALLING) { |
| rsvpTunnelsWithLocalBw.add(tunnelId); |
| } |
| |
| return true; |
| } |
| |
| private boolean setupDisjointPaths(DeviceId src, DeviceId dst, List<Constraint> constraints, String tunnelName, |
| double bwConstraintValue, LspType lspType, CostConstraint costConstraint, |
| TunnelEndPoint srcEndPoint, TunnelEndPoint dstEndPoint) { |
| Set<DisjointPath> paths = pathService.getDisjointPaths(src, dst, weight(constraints)); |
| |
| // NO-PATH |
| if (paths.isEmpty()) { |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType, null, true)); |
| return false; |
| } |
| |
| DisjointPath path = paths.iterator().next(); |
| |
| Builder annotationBuilder = DefaultAnnotations.builder(); |
| double bw = 0; |
| if (bwConstraintValue != 0) { |
| //TODO: BW needs to be divided by 2 :: bwConstraintValue/2 |
| bw = bwConstraintValue / 2; |
| annotationBuilder.set(BANDWIDTH, String.valueOf(bw)); |
| } |
| 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); |
| annotationBuilder.set(LOAD_BALANCING_PATH_NAME, tunnelName); |
| |
| //Path computedPath = computedPathSet.iterator().next(); |
| |
| 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())); |
| } |
| |
| //Generate different tunnel name for disjoint paths |
| String tunnel1 = (new StringBuilder()).append(tunnelName).append("_1").toString(); |
| String tunnel2 = (new StringBuilder()).append(tunnelName).append("_2").toString(); |
| |
| // For SR-TE tunnels, call SR manager for label stack and put it inside tunnel. |
| Tunnel tunnelPrimary = new DefaultTunnel(null, srcEndPoint, dstEndPoint, MPLS, INIT, null, null, |
| TunnelName.tunnelName(tunnel1), path.primary(), |
| annotationBuilder.build()); |
| |
| Tunnel tunnelBackup = new DefaultTunnel(null, srcEndPoint, dstEndPoint, MPLS, INIT, null, null, |
| TunnelName.tunnelName(tunnel2), path.backup(), |
| annotationBuilder.build()); |
| |
| // Allocate bandwidth. |
| if (bwConstraintValue != 0) { |
| if (!reserveBandwidth(path.primary(), bw, null)) { |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnel1, constraints, |
| lspType, null, true)); |
| return false; |
| } |
| |
| if (!reserveBandwidth(path.backup(), bw, null)) { |
| //Release bandwidth resource for tunnel1 |
| if (bwConstraintValue != 0) { |
| path.primary().links().forEach(ln -> |
| bandwidthMgmtService.releaseLocalReservedBw(LinkKey.linkKey(ln), |
| Double.parseDouble(tunnelPrimary.annotations().value(BANDWIDTH)))); |
| } |
| |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnel2, constraints, |
| lspType, null, true)); |
| return false; |
| } |
| } |
| |
| TunnelId tunnelId1 = tunnelService.setupTunnel(appId, src, tunnelPrimary, path.primary()); |
| if (tunnelId1 == null) { |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType, null, true)); |
| |
| if (bwConstraintValue != 0) { |
| path.primary().links().forEach(ln -> bandwidthMgmtService.releaseLocalReservedBw(LinkKey.linkKey(ln), |
| Double.parseDouble(tunnelPrimary.annotations().value(BANDWIDTH)))); |
| } |
| |
| return false; |
| } |
| |
| TunnelId tunnelId2 = tunnelService.setupTunnel(appId, src, tunnelBackup, path.backup()); |
| if (tunnelId2 == null) { |
| //Release 1st tunnel |
| releasePath(tunnelId1); |
| |
| pceStore.addFailedPathInfo(new PcePathInfo(src, dst, tunnelName, constraints, lspType, null, true)); |
| |
| if (bwConstraintValue != 0) { |
| path.backup().links().forEach(ln -> bandwidthMgmtService.releaseLocalReservedBw(LinkKey.linkKey(ln), |
| Double.parseDouble(tunnelBackup.annotations().value(BANDWIDTH)))); |
| } |
| |
| return false; |
| } |
| |
| pceStore.addLoadBalancingTunnelIdsInfo(tunnelName, tunnelId1, tunnelId2); |
| //pceStore.addDisjointPathInfo(tunnelName, path); |
| return true; |
| } |
| |
| @Override |
| public boolean updatePath(TunnelId tunnelId, List<Constraint> constraints) { |
| checkNotNull(tunnelId); |
| Set<Path> computedPathSet = Sets.newLinkedHashSet(); |
| 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; |
| PceBandwidthConstraint 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 PceBandwidthConstraint) { |
| bwConstraint = (PceBandwidthConstraint) 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) { |
| if (bwConstraint == null) { |
| bwConstraintValue = existingBwValue.bps(); |
| } |
| //If bandwidth constraints not specified , take existing bandwidth for shared bandwidth calculation |
| shBwConstraint = bwConstraint != null ? new SharedBandwidthConstraint(links, |
| existingBwValue, bwConstraint.bandwidth()) : new SharedBandwidthConstraint(links, |
| existingBwValue, existingBwValue); |
| |
| constraints.add(shBwConstraint); |
| } |
| } else { |
| constraints = new LinkedList<>(); |
| } |
| |
| constraints.add(CapabilityConstraint.of(CapabilityType.valueOf(lspSigType))); |
| if (costConstraint != null) { |
| constraints.add(costConstraint); |
| } else { |
| //Take cost constraint from old tunnel if it is not specified in update flow |
| costType = tunnel.annotations().value(COST_TYPE); |
| costConstraint = CostConstraint.of(CostConstraint.Type.valueOf(costType)); |
| constraints.add(costConstraint); |
| } |
| |
| List<ExplicitPathInfo> explicitPathInfo = pceStore |
| .getTunnelNameExplicitPathInfoMap(tunnel.tunnelName().value()); |
| if (explicitPathInfo != null) { |
| List<Path> finalComputedPath = computeExplicitPath(explicitPathInfo, |
| tunnel.path().src().deviceId(), tunnel.path().dst().deviceId(), |
| constraints); |
| |
| if (finalComputedPath == null) { |
| return false; |
| } |
| |
| List<Link> totalLinks = new LinkedList<>(); |
| double totalCost = 0; |
| //Add all partial computed paths |
| for (Path path : finalComputedPath) { |
| totalLinks.addAll(path.links()); |
| totalCost = totalCost + path.cost(); |
| } |
| computedPathSet.add(new DefaultPath(finalComputedPath.iterator().next().providerId(), |
| totalLinks, totalCost)); |
| } else { |
| computedPathSet = computePath(tunnel.path().src().deviceId(), tunnel.path().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(); |
| 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)); |
| } |
| |
| Tunnel updatedTunnel = new DefaultTunnel(null, tunnel.src(), tunnel.dst(), MPLS, INIT, null, null, |
| tunnel.tunnelName(), computedPath, |
| annotationBuilder.build()); |
| |
| // Allocate shared bandwidth for all tunnels. |
| if (bwConstraintValue != 0) { |
| if (!reserveBandwidth(computedPath, bwConstraintValue, shBwConstraint)) { |
| return false; |
| } |
| } |
| |
| TunnelId updatedTunnelId = tunnelService.setupTunnel(appId, links.get(0).src().deviceId(), updatedTunnel, |
| computedPath); |
| |
| if (updatedTunnelId == null) { |
| if (bwConstraintValue != 0) { |
| releaseSharedBwForNewTunnel(computedPath, bwConstraintValue, shBwConstraint); |
| } |
| return false; |
| } |
| |
| if (bwConstraintValue != 0 && lspType == WITH_SIGNALLING) { |
| rsvpTunnelsWithLocalBw.add(updatedTunnelId); |
| } |
| |
| 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 boolean releasePath(String loadBalancingPathName) { |
| checkNotNull(loadBalancingPathName); |
| |
| List<TunnelId> tunnelIds = pceStore.getLoadBalancingTunnelIds(loadBalancingPathName); |
| if (tunnelIds != null && !tunnelIds.isEmpty()) { |
| for (TunnelId id : tunnelIds) { |
| if (!tunnelService.downTunnel(appId, id)) { |
| return false; |
| } |
| } |
| |
| //pceStore.removeDisjointPathInfo(loadBalancedPathName); |
| pceStore.removeLoadBalancingTunnelIdsInfo(loadBalancingPathName); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public Iterable<Tunnel> queryAllPath() { |
| return tunnelService.queryTunnel(MPLS); |
| } |
| |
| @Override |
| public Tunnel queryPath(TunnelId tunnelId) { |
| return tunnelService.queryTunnel(tunnelId); |
| } |
| |
| private boolean releaseSharedBwForNewTunnel(Path computedPath, double bandwidthConstraint, |
| SharedBandwidthConstraint shBwConstraint) { |
| checkNotNull(computedPath); |
| checkNotNull(bandwidthConstraint); |
| double bwToAllocate; |
| |
| Double additionalBwValue = null; |
| if (shBwConstraint != null) { |
| additionalBwValue = ((bandwidthConstraint - shBwConstraint.sharedBwValue().bps()) <= 0) ? null |
| : (bandwidthConstraint - shBwConstraint.sharedBwValue().bps()); |
| } |
| |
| for (Link link : computedPath.links()) { |
| bwToAllocate = 0; |
| if ((shBwConstraint != null) && (shBwConstraint.links().contains(link))) { |
| if (additionalBwValue != null) { |
| bwToAllocate = additionalBwValue; |
| } |
| } else { |
| bwToAllocate = bandwidthConstraint; |
| } |
| |
| if (bwToAllocate != 0) { |
| bandwidthMgmtService.releaseLocalReservedBw(LinkKey.linkKey(link), bwToAllocate); |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * 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 synchronized 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 if (constraint instanceof PceBandwidthConstraint) { |
| cost = ((PceBandwidthConstraint) constraint).isValidLink(edge.link(), |
| bandwidthMgmtService) ? 1 : -1; |
| } else if (constraint instanceof SharedBandwidthConstraint) { |
| cost = ((SharedBandwidthConstraint) constraint).isValidLink(edge.link(), |
| bandwidthMgmtService) ? 1 : -1; |
| } else if (constraint instanceof CostConstraint) { |
| cost = ((CostConstraint) constraint).isValidLink(edge.link(), netCfgService); |
| } else { |
| cost = constraint.cost(edge.link(), null); |
| } |
| } |
| 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 |
| PceBandwidthConstraint localConst = new PceBandwidthConstraint(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)), |
| pceStore.getTunnelNameExplicitPathInfoMap(tunnel.tunnelName().value()), |
| tunnel.annotations().value(LOAD_BALANCING_PATH_NAME) != null ? true : false)); |
| //Release that tunnel calling PCInitiate |
| releasePath(tunnel.tunnelId()); |
| } |
| } |
| |
| return false; |
| } |
| |
| // Allocates the bandwidth locally for PCECC tunnels. |
| private boolean reserveBandwidth(Path computedPath, double bandwidthConstraint, |
| SharedBandwidthConstraint shBwConstraint) { |
| checkNotNull(computedPath); |
| checkNotNull(bandwidthConstraint); |
| Resource resource = null; |
| double bwToAllocate = 0; |
| Map<Link, Double> linkMap = new HashMap<>(); |
| |
| /** |
| * 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 = 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) { |
| if (!bandwidthMgmtService.allocLocalReservedBw(LinkKey.linkKey(link.src(), link.dst()), |
| bwToAllocate)) { |
| // If allocation for any link fails, then release the partially allocated bandwidth |
| // for all links allocated |
| linkMap.forEach((ln, aDouble) -> bandwidthMgmtService |
| .releaseLocalReservedBw(LinkKey.linkKey(ln), aDouble)); |
| return false; |
| } |
| |
| linkMap.put(link, bwToAllocate); |
| } |
| } |
| |
| return true; |
| } |
| |
| /* |
| * 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; |
| } |
| |
| tunnel.path().links().forEach(tn -> bandwidthMgmtService.releaseLocalReservedBw(LinkKey.linkKey(tn), |
| Double.parseDouble(tunnel.annotations().value(BANDWIDTH)))); |
| } |
| |
| /** |
| * 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) { |
| |
| boolean isAllocate = false; |
| Double oldTunnelBw = Double.parseDouble(oldTunnel.annotations().value(BANDWIDTH)); |
| Double newTunnelBw = Double.parseDouble(newTunnel.annotations().value(BANDWIDTH)); |
| |
| if (newTunnelBw > oldTunnelBw) { |
| isAllocate = true; |
| } |
| |
| for (Link link : newTunnel.path().links()) { |
| if (oldTunnel.path().links().contains(link)) { |
| if (!isAllocate) { |
| bandwidthMgmtService.releaseLocalReservedBw(LinkKey.linkKey(link), |
| oldTunnelBw - newTunnelBw); |
| } |
| } else { |
| bandwidthMgmtService.releaseLocalReservedBw(LinkKey.linkKey(link), oldTunnelBw); |
| } |
| } |
| } |
| |
| // 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_UPDATED: |
| if (rsvpTunnelsWithLocalBw.contains(tunnel.tunnelId())) { |
| releaseBandwidth(event.subject()); |
| rsvpTunnelsWithLocalBw.remove(tunnel.tunnelId()); |
| } |
| |
| 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 PceBandwidthConstraint(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, |
| pceStore.getTunnelNameExplicitPathInfoMap(tunnel |
| .tunnelName().value()), tunnel.annotations() |
| .value(LOAD_BALANCING_PATH_NAME) != null ? true : false)); |
| } |
| |
| 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 && mastershipService.getLocalRole(tunnel.path().src() |
| .deviceId()) == MastershipRole.MASTER) { |
| if (lspType != WITH_SIGNALLING) { |
| releaseBandwidth(tunnel); |
| } |
| } |
| |
| /*if (pceStore.getTunnelInfo(tunnel.tunnelId()) != null) { |
| pceStore.removeTunnelInfo(tunnel.tunnelId()); |
| }*/ |
| |
| break; |
| |
| default: |
| break; |
| |
| } |
| return; |
| } |
| } |
| |
| @Override |
| public List<ExplicitPathInfo> explicitPathInfoList(String tunnelName) { |
| return pceStore.getTunnelNameExplicitPathInfoMap(tunnelName); |
| } |
| |
| @Override |
| public List<TunnelId> queryLoadBalancingPath(String pathName) { |
| return pceStore.getLoadBalancingTunnelIds(pathName); |
| } |
| |
| //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(), failedPathInfo.explicitPathInfo())) { |
| // 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(); |
| } |
| } |
| } |