| package org.onlab.onos.optical.provisioner; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| 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.onlab.onos.ApplicationId; |
| import org.onlab.onos.CoreService; |
| import org.onlab.onos.net.ConnectPoint; |
| import org.onlab.onos.net.Link; |
| import org.onlab.onos.net.Path; |
| import org.onlab.onos.net.device.DeviceService; |
| import org.onlab.onos.net.intent.Intent; |
| import org.onlab.onos.net.intent.IntentEvent; |
| import org.onlab.onos.net.intent.IntentExtensionService; |
| import org.onlab.onos.net.intent.IntentListener; |
| import org.onlab.onos.net.intent.IntentService; |
| import org.onlab.onos.net.intent.OpticalConnectivityIntent; |
| import org.onlab.onos.net.intent.PointToPointIntent; |
| import org.onlab.onos.net.link.LinkService; |
| import org.onlab.onos.net.resource.LinkResourceService; |
| import org.onlab.onos.net.topology.LinkWeight; |
| import org.onlab.onos.net.topology.Topology; |
| import org.onlab.onos.net.topology.TopologyEdge; |
| |
| import org.onlab.onos.net.topology.TopologyService; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * OpticalPathProvisioner listens event notifications from the Intent F/W. |
| * It generates one or more opticalConnectivityIntent(s) and submits (or withdraws) to Intent F/W |
| * for adding/releasing capacity at the packet layer. |
| * |
| */ |
| |
| @Component(immediate = true) |
| public class OpticalPathProvisioner { |
| |
| protected static final Logger log = LoggerFactory |
| .getLogger(OpticalPathProvisioner.class); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private IntentService intentService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private IntentExtensionService intentExtensionService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected LinkService linkService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected TopologyService topologyService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected LinkResourceService resourceService; |
| |
| private ApplicationId appId; |
| |
| //protected <IntentId> intentIdGenerator; |
| |
| private final InternalOpticalPathProvisioner pathProvisioner = new InternalOpticalPathProvisioner(); |
| |
| @Activate |
| protected void activate() { |
| intentService.addListener(pathProvisioner); |
| appId = coreService.registerApplication("org.onlab.onos.optical"); |
| log.info("Starting optical path provisoning..."); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| intentService.removeListener(pathProvisioner); |
| } |
| |
| public class InternalOpticalPathProvisioner implements IntentListener { |
| @Override |
| public void event(IntentEvent event) { |
| switch (event.type()) { |
| case SUBMITTED: |
| break; |
| case INSTALLED: |
| break; |
| case FAILED: |
| log.info("intent {} failed, calling optical path provisioning APP.", event.subject()); |
| setuplightpath(event.subject()); |
| break; |
| case WITHDRAWN: |
| log.info("intent {} withdrawn.", event.subject()); |
| teardownLightpath(event.subject()); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| private void setuplightpath(Intent intent) { |
| // TODO: considering user policies and optical reach |
| if (!intent.equals(PointToPointIntent.class)) { |
| return; |
| } |
| |
| PointToPointIntent pktIntent = (PointToPointIntent) intent; |
| if (pktIntent.ingressPoint() == null || pktIntent.egressPoint() == null) { |
| return; |
| } |
| |
| Topology topology = topologyService.currentTopology(); |
| |
| LinkWeight weight = new LinkWeight() { |
| @Override |
| public double weight(TopologyEdge edge) { |
| boolean isOptical = false; |
| String t = edge.link().annotations().value("linkType"); |
| if (t.equals("WDM")) { |
| isOptical = true; |
| } |
| if (isOptical) { |
| return 1000; // optical links |
| } else { |
| return 10; // packet links |
| } |
| } |
| }; |
| |
| Set<Path> paths = topologyService.getPaths(topology, |
| pktIntent.ingressPoint().deviceId(), |
| pktIntent.egressPoint().deviceId(), |
| weight); |
| |
| if (paths.isEmpty()) { |
| return; |
| } |
| |
| ConnectPoint srcWdmPoint = null; |
| ConnectPoint dstWdmPoint = null; |
| Iterator<Path> itrPath = paths.iterator(); |
| Path firstPath = itrPath.next(); |
| log.info(firstPath.toString()); |
| |
| ArrayList<Map<ConnectPoint, ConnectPoint>> connectionList = new ArrayList<>(); |
| |
| Iterator<Link> itrLink = firstPath.links().iterator(); |
| while (itrLink.hasNext()) { |
| Link link1 = itrLink.next(); |
| if (!isOpticalLink(link1)) { |
| continue; |
| } else { |
| srcWdmPoint = link1.dst(); |
| dstWdmPoint = srcWdmPoint; |
| } |
| |
| while (true) { |
| |
| if (itrLink.hasNext()) { |
| Link link2 = itrLink.next(); |
| dstWdmPoint = link2.src(); |
| } else { |
| break; |
| } |
| |
| if (itrLink.hasNext()) { |
| Link link3 = itrLink.next(); |
| if (!isOpticalLink(link3)) { |
| break; |
| } |
| } else { |
| break; |
| } |
| } |
| |
| Map<ConnectPoint, ConnectPoint> pair = |
| new HashMap<ConnectPoint, ConnectPoint>(); |
| pair.put(srcWdmPoint, dstWdmPoint); |
| |
| connectionList.add(pair); |
| } |
| |
| for (Map<ConnectPoint, ConnectPoint> map : connectionList) { |
| for (Entry<ConnectPoint, ConnectPoint> entry : map.entrySet()) { |
| |
| ConnectPoint src = entry.getKey(); |
| ConnectPoint dst = entry.getValue(); |
| |
| Intent opticalIntent = new OpticalConnectivityIntent(appId, |
| srcWdmPoint, |
| dstWdmPoint); |
| |
| intentService.submit(opticalIntent); |
| |
| log.info(opticalIntent.toString()); |
| } |
| } |
| |
| } |
| |
| private boolean isOpticalLink(Link link) { |
| boolean isOptical = false; |
| String t = link.annotations().value("linkType"); |
| if (t.equals("WDM") || t.equals("PktOptLink")) { |
| isOptical = true; |
| } |
| return isOptical; |
| } |
| |
| private void teardownLightpath(Intent intent) { |
| // TODO: tear down the idle lightpath if the utilization is close to zero. |
| } |
| |
| } |
| |
| } |