| /* |
| * Copyright 2014,2015 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.ui.impl; |
| |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.Device; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Host; |
| import org.onosproject.net.HostId; |
| import org.onosproject.net.Link; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.host.HostService; |
| import org.onosproject.net.intent.HostToHostIntent; |
| import org.onosproject.net.intent.Intent; |
| import org.onosproject.net.intent.IntentService; |
| import org.onosproject.net.intent.LinkCollectionIntent; |
| import org.onosproject.net.intent.MultiPointToSinglePointIntent; |
| import org.onosproject.net.intent.OpticalConnectivityIntent; |
| import org.onosproject.net.intent.PathIntent; |
| import org.onosproject.net.intent.PointToPointIntent; |
| import org.onosproject.net.link.LinkService; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import static org.onosproject.net.intent.IntentState.INSTALLED; |
| |
| /** |
| * Auxiliary facility to query the intent service based on the specified |
| * set of end-station hosts, edge points or infrastructure devices. |
| */ |
| public class TopologyViewIntentFilter { |
| |
| private final IntentService intentService; |
| private final DeviceService deviceService; |
| private final HostService hostService; |
| private final LinkService linkService; |
| |
| /** |
| * Crreates an intent filter. |
| * |
| * @param intentService intent service reference |
| * @param deviceService device service reference |
| * @param hostService host service reference |
| * @param linkService link service reference |
| */ |
| TopologyViewIntentFilter(IntentService intentService, |
| DeviceService deviceService, |
| HostService hostService, LinkService linkService) { |
| this.intentService = intentService; |
| this.deviceService = deviceService; |
| this.hostService = hostService; |
| this.linkService = linkService; |
| } |
| |
| /** |
| * Finds all path (host-to-host or point-to-point) intents that pertains |
| * to the given hosts. |
| * |
| * @param hosts set of hosts to query by |
| * @param devices set of devices to query by |
| * @param sourceIntents collection of intents to search |
| * @return set of intents that 'match' all hosts and devices given |
| */ |
| List<Intent> findPathIntents(Set<Host> hosts, Set<Device> devices, |
| Iterable<Intent> sourceIntents) { |
| // Derive from this the set of edge connect points. |
| Set<ConnectPoint> edgePoints = getEdgePoints(hosts); |
| |
| // Iterate over all intents and produce a set that contains only those |
| // intents that target all selected hosts or derived edge connect points. |
| return getIntents(hosts, devices, edgePoints, sourceIntents); |
| } |
| |
| |
| // Produces a set of edge points from the specified set of hosts. |
| private Set<ConnectPoint> getEdgePoints(Set<Host> hosts) { |
| Set<ConnectPoint> edgePoints = new HashSet<>(); |
| for (Host host : hosts) { |
| edgePoints.add(host.location()); |
| } |
| return edgePoints; |
| } |
| |
| // Produces a list of intents that target all selected hosts, devices or connect points. |
| private List<Intent> getIntents(Set<Host> hosts, Set<Device> devices, |
| Set<ConnectPoint> edgePoints, |
| Iterable<Intent> sourceIntents) { |
| List<Intent> intents = new ArrayList<>(); |
| if (hosts.isEmpty() && devices.isEmpty()) { |
| return intents; |
| } |
| |
| Set<OpticalConnectivityIntent> opticalIntents = new HashSet<>(); |
| |
| // Search through all intents and see if they are relevant to our search. |
| for (Intent intent : sourceIntents) { |
| if (intentService.getIntentState(intent.key()) == INSTALLED) { |
| boolean isRelevant = false; |
| if (intent instanceof HostToHostIntent) { |
| isRelevant = isIntentRelevantToHosts((HostToHostIntent) intent, hosts) && |
| isIntentRelevantToDevices(intent, devices); |
| } else if (intent instanceof PointToPointIntent) { |
| isRelevant = isIntentRelevant((PointToPointIntent) intent, edgePoints) && |
| isIntentRelevantToDevices(intent, devices); |
| } else if (intent instanceof MultiPointToSinglePointIntent) { |
| isRelevant = isIntentRelevant((MultiPointToSinglePointIntent) intent, edgePoints) && |
| isIntentRelevantToDevices(intent, devices); |
| } else if (intent instanceof OpticalConnectivityIntent) { |
| opticalIntents.add((OpticalConnectivityIntent) intent); |
| } |
| // TODO: add other intents, e.g. SinglePointToMultiPointIntent |
| |
| if (isRelevant) { |
| intents.add(intent); |
| } |
| } |
| } |
| |
| // As a second pass, try to link up any optical intents with the |
| // packet-level ones. |
| for (OpticalConnectivityIntent intent : opticalIntents) { |
| if (isIntentRelevant(intent, intents) && |
| isIntentRelevantToDevices(intent, devices)) { |
| intents.add(intent); |
| } |
| } |
| return intents; |
| } |
| |
| // Indicates whether the specified intent involves all of the given hosts. |
| private boolean isIntentRelevantToHosts(HostToHostIntent intent, Iterable<Host> hosts) { |
| for (Host host : hosts) { |
| HostId id = host.id(); |
| // Bail if intent does not involve this host. |
| if (!id.equals(intent.one()) && !id.equals(intent.two())) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| // Indicates whether the specified intent involves all of the given devices. |
| private boolean isIntentRelevantToDevices(Intent intent, Iterable<Device> devices) { |
| List<Intent> installables = intentService.getInstallableIntents(intent.key()); |
| for (Device device : devices) { |
| if (!isIntentRelevantToDevice(installables, device)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| // Indicates whether the specified intent involves the given device. |
| private boolean isIntentRelevantToDevice(List<Intent> installables, Device device) { |
| if (installables != null) { |
| for (Intent installable : installables) { |
| if (installable instanceof PathIntent) { |
| PathIntent pathIntent = (PathIntent) installable; |
| if (pathContainsDevice(pathIntent.path().links(), device.id())) { |
| return true; |
| } |
| } else if (installable instanceof LinkCollectionIntent) { |
| LinkCollectionIntent linksIntent = (LinkCollectionIntent) installable; |
| if (pathContainsDevice(linksIntent.links(), device.id())) { |
| return true; |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| // Indicates whether the specified intent involves the given device. |
| private boolean pathContainsDevice(Iterable<Link> links, DeviceId id) { |
| for (Link link : links) { |
| if (link.src().elementId().equals(id) || link.dst().elementId().equals(id)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private boolean isIntentRelevant(PointToPointIntent intent, |
| Iterable<ConnectPoint> edgePoints) { |
| for (ConnectPoint point : edgePoints) { |
| // Bail if intent does not involve this edge point. |
| if (!point.equals(intent.egressPoint()) && |
| !point.equals(intent.ingressPoint())) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| // Indicates whether the specified intent involves all of the given edge points. |
| private boolean isIntentRelevant(MultiPointToSinglePointIntent intent, |
| Iterable<ConnectPoint> edgePoints) { |
| for (ConnectPoint point : edgePoints) { |
| // Bail if intent does not involve this edge point. |
| if (!point.equals(intent.egressPoint()) && |
| !intent.ingressPoints().contains(point)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| // Indicates whether the specified intent involves all of the given edge points. |
| private boolean isIntentRelevant(OpticalConnectivityIntent opticalIntent, |
| Iterable<Intent> intents) { |
| Link ccSrc = getFirstLink(opticalIntent.getSrc(), false); |
| Link ccDst = getFirstLink(opticalIntent.getDst(), true); |
| |
| for (Intent intent : intents) { |
| List<Intent> installables = intentService.getInstallableIntents(intent.key()); |
| for (Intent installable : installables) { |
| if (installable instanceof PathIntent) { |
| List<Link> links = ((PathIntent) installable).path().links(); |
| if (links.size() == 3) { |
| Link tunnel = links.get(1); |
| if (tunnel.src().equals(ccSrc.src()) && |
| tunnel.dst().equals(ccDst.dst())) { |
| return true; |
| } |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| private Link getFirstLink(ConnectPoint point, boolean ingress) { |
| for (Link link : linkService.getLinks(point)) { |
| if (point.equals(ingress ? link.src() : link.dst())) { |
| return link; |
| } |
| } |
| return null; |
| } |
| |
| } |