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Diffstat (limited to 'framework/src/onos/web/gui/src/main/java/org/onosproject/ui/impl/topo/TopoIntentFilter.java')
| -rw-r--r-- | framework/src/onos/web/gui/src/main/java/org/onosproject/ui/impl/topo/TopoIntentFilter.java | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/framework/src/onos/web/gui/src/main/java/org/onosproject/ui/impl/topo/TopoIntentFilter.java b/framework/src/onos/web/gui/src/main/java/org/onosproject/ui/impl/topo/TopoIntentFilter.java new file mode 100644 index 00000000..8372dede --- /dev/null +++ b/framework/src/onos/web/gui/src/main/java/org/onosproject/ui/impl/topo/TopoIntentFilter.java @@ -0,0 +1,274 @@ +/* + * 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.topo; + +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.flow.FlowRule; +import org.onosproject.net.host.HostService; +import org.onosproject.net.intent.FlowRuleIntent; +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.Collection; +import java.util.HashSet; +import java.util.List; +import java.util.Objects; +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 TopoIntentFilter { + + private final IntentService intentService; + private final DeviceService deviceService; + private final HostService hostService; + private final LinkService linkService; + + /** + * Creates an intent filter. + * + * @param services service references bundle + */ + public TopoIntentFilter(ServicesBundle services) { + this.intentService = services.intentService(); + this.deviceService = services.deviceService(); + this.hostService = services.hostService(); + this.linkService = services.linkService(); + } + + /** + * Finds all path (host-to-host or point-to-point) intents that pertain + * to the given hosts and devices. + * + * @param hosts set of hosts to query by + * @param devices set of devices to query by + * @return set of intents that 'match' all hosts and devices given + */ + public List<Intent> findPathIntents(Set<Host> hosts, Set<Device> devices) { + // start with all intents + Iterable<Intent> sourceIntents = intentService.getIntents(); + + // 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 FlowRuleIntent) { + FlowRuleIntent flowRuleIntent = (FlowRuleIntent) installable; + if (rulesContainDevice(flowRuleIntent.flowRules(), 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 links involve 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; + } + + // Indicates whether the specified flow rules involvesthe given device. + private boolean rulesContainDevice(Collection<FlowRule> flowRules, DeviceId id) { + for (FlowRule rule : flowRules) { + if (rule.deviceId().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); + if (ccSrc == null || ccDst == null) { + return false; + } + + 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 (Objects.equals(tunnel.src(), ccSrc.src()) && + Objects.equals(tunnel.dst(), 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; + } +} |