| /* |
| * Copyright 2014 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.optical; |
| |
| import com.google.common.collect.Lists; |
| 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.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.Host; |
| import org.onosproject.net.Link; |
| import org.onosproject.net.Path; |
| import org.onosproject.net.host.HostService; |
| import org.onosproject.net.intent.HostToHostIntent; |
| import org.onosproject.net.intent.Intent; |
| import org.onosproject.net.intent.IntentEvent; |
| import org.onosproject.net.intent.IntentListener; |
| import org.onosproject.net.intent.IntentOperations; |
| import org.onosproject.net.intent.IntentService; |
| import org.onosproject.net.intent.IntentState; |
| import org.onosproject.net.intent.OpticalConnectivityIntent; |
| import org.onosproject.net.intent.PointToPointIntent; |
| import org.onosproject.net.topology.LinkWeight; |
| import org.onosproject.net.topology.PathService; |
| import org.onosproject.net.topology.TopologyEdge; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * 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) |
| protected PathService pathService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected HostService hostService; |
| |
| private ApplicationId appId; |
| |
| //protected <IntentId> intentIdGenerator; |
| |
| private final InternalOpticalPathProvisioner pathProvisioner = new InternalOpticalPathProvisioner(); |
| |
| @Activate |
| protected void activate() { |
| intentService.addListener(pathProvisioner); |
| appId = coreService.registerApplication("org.onosproject.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 INSTALL_REQ: |
| break; |
| case INSTALLED: |
| break; |
| case FAILED: |
| log.info("packet 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 support more packet intent types |
| List<Intent> intents = Lists.newArrayList(); |
| if (intent instanceof HostToHostIntent) { |
| HostToHostIntent hostToHostIntent = (HostToHostIntent) intent; |
| Host one = hostService.getHost(hostToHostIntent.one()); |
| Host two = hostService.getHost(hostToHostIntent.two()); |
| // provision both directions |
| intents.addAll(getOpticalPaths(one.location(), two.location())); |
| intents.addAll(getOpticalPaths(two.location(), one.location())); |
| } else if (intent instanceof PointToPointIntent) { |
| PointToPointIntent p2pIntent = (PointToPointIntent) intent; |
| intents.addAll(getOpticalPaths(p2pIntent.ingressPoint(), p2pIntent.egressPoint())); |
| } else { |
| log.info("Unsupported intent type: {}", intent.getClass()); |
| } |
| |
| // Build the intent batch |
| IntentOperations.Builder ops = IntentOperations.builder(appId); |
| for (Intent i : intents) { |
| // TODO: don't allow duplicate intents between the same points for now |
| // we may want to allow this carefully in future to increase capacity |
| Intent existing = intentService.getIntent(i.id()); |
| if (existing == null || |
| !IntentState.WITHDRAWN.equals(intentService.getIntentState(i.id()))) { |
| ops.addSubmitOperation(i); |
| } |
| } |
| intentService.execute(ops.build()); |
| } |
| |
| private List<Intent> getOpticalPaths(ConnectPoint ingress, ConnectPoint egress) { |
| Set<Path> paths = pathService.getPaths(ingress.deviceId(), |
| egress.deviceId(), |
| new OpticalLinkWeight()); |
| |
| if (paths.isEmpty()) { |
| return Lists.newArrayList(); |
| } |
| |
| ConnectPoint srcWdmPoint = null; |
| ConnectPoint dstWdmPoint = null; |
| Iterator<Path> itrPath = paths.iterator(); |
| Path firstPath = itrPath.next(); |
| log.info(firstPath.links().toString()); |
| |
| List<Intent> connectionList = Lists.newArrayList(); |
| |
| 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; |
| } |
| } |
| |
| Intent opticalIntent = new OpticalConnectivityIntent(appId, |
| srcWdmPoint, |
| dstWdmPoint); |
| log.info("Creating optical intent from {} to {}", srcWdmPoint, dstWdmPoint); |
| connectionList.add(opticalIntent); |
| } |
| return connectionList; |
| } |
| |
| |
| |
| private void teardownLightpath(Intent intent) { |
| // TODO: tear down the idle lightpath if the utilization is close to zero. |
| } |
| } |
| |
| private static boolean isOpticalLink(Link link) { |
| boolean isOptical = false; |
| Link.Type lt = link.type(); |
| if (lt == Link.Type.OPTICAL) { |
| isOptical = true; |
| } |
| return isOptical; |
| } |
| |
| private static class OpticalLinkWeight implements LinkWeight { |
| @Override |
| public double weight(TopologyEdge edge) { |
| if (edge.link().state() == Link.State.INACTIVE) { |
| return -1; // ignore inactive links |
| } |
| if (isOpticalLink(edge.link())) { |
| return 1000.0; // optical links |
| } else { |
| return 1.0; // packet links |
| } |
| } |
| } |
| |
| } |