Ray Milkey

Flow Objective compiler for link collections intents

Change-Id: Ie9d820b1d7d4cdee5411a7318c246c90e3fa91d0
/*
* Copyright 2016 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.net.intent.impl.compiler;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
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.DeviceId;
import org.onosproject.net.Link;
import org.onosproject.net.PortNumber;
import org.onosproject.net.flow.DefaultTrafficSelector;
import org.onosproject.net.flow.DefaultTrafficTreatment;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import org.onosproject.net.flowobjective.DefaultForwardingObjective;
import org.onosproject.net.flowobjective.ForwardingObjective;
import org.onosproject.net.flowobjective.Objective;
import org.onosproject.net.intent.FlowObjectiveIntent;
import org.onosproject.net.intent.Intent;
import org.onosproject.net.intent.IntentCompiler;
import org.onosproject.net.intent.IntentExtensionService;
import org.onosproject.net.intent.LinkCollectionIntent;
import org.onosproject.net.resource.link.LinkResourceAllocations;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.SetMultimap;
/**
* Compiler to produce flow objectives from link collections.
*/
@Component(immediate = true)
public class LinkCollectionIntentFlowObjectivesCompiler implements IntentCompiler<LinkCollectionIntent> {
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected IntentExtensionService intentManager;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected CoreService coreService;
private ApplicationId appId;
@Activate
public void activate() {
appId = coreService.registerApplication("org.onosproject.net.intent");
//intentManager.registerCompiler(LinkCollectionIntent.class, this);
}
@Deactivate
public void deactivate() {
//intentManager.unregisterCompiler(LinkCollectionIntent.class);
}
@Override
public List<Intent> compile(LinkCollectionIntent intent, List<Intent> installable,
Set<LinkResourceAllocations> resources) {
SetMultimap<DeviceId, PortNumber> inputPorts = HashMultimap.create();
SetMultimap<DeviceId, PortNumber> outputPorts = HashMultimap.create();
for (Link link : intent.links()) {
inputPorts.put(link.dst().deviceId(), link.dst().port());
outputPorts.put(link.src().deviceId(), link.src().port());
}
for (ConnectPoint ingressPoint : intent.ingressPoints()) {
inputPorts.put(ingressPoint.deviceId(), ingressPoint.port());
}
for (ConnectPoint egressPoint : intent.egressPoints()) {
outputPorts.put(egressPoint.deviceId(), egressPoint.port());
}
List<Objective> objectives = new ArrayList<>();
List<DeviceId> devices = new ArrayList<>();
for (DeviceId deviceId: outputPorts.keys()) {
List<Objective> deviceObjectives =
createRules(intent,
deviceId,
inputPorts.get(deviceId),
outputPorts.get(deviceId));
deviceObjectives.forEach(objective -> {
objectives.add(objective);
devices.add(deviceId);
});
}
return Collections.singletonList(
new FlowObjectiveIntent(appId, devices, objectives, intent.resources()));
}
private List<Objective> createRules(LinkCollectionIntent intent, DeviceId deviceId,
Set<PortNumber> inPorts, Set<PortNumber> outPorts) {
Set<PortNumber> ingressPorts = intent.ingressPoints().stream()
.filter(point -> point.deviceId().equals(deviceId))
.map(ConnectPoint::port)
.collect(Collectors.toSet());
TrafficTreatment.Builder defaultTreatmentBuilder = DefaultTrafficTreatment.builder();
outPorts.stream()
.forEach(defaultTreatmentBuilder::setOutput);
TrafficTreatment defaultTreatment = defaultTreatmentBuilder.build();
TrafficTreatment.Builder ingressTreatmentBuilder = DefaultTrafficTreatment.builder(intent.treatment());
outPorts.stream()
.forEach(ingressTreatmentBuilder::setOutput);
TrafficTreatment ingressTreatment = ingressTreatmentBuilder.build();
List<Objective> objectives = new ArrayList<>(inPorts.size());
for (PortNumber inPort: inPorts) {
TrafficSelector selector = DefaultTrafficSelector.builder(intent.selector()).matchInPort(inPort).build();
TrafficTreatment treatment;
if (ingressPorts.contains(inPort)) {
treatment = ingressTreatment;
} else {
treatment = defaultTreatment;
}
Objective objective = DefaultForwardingObjective.builder()
.withSelector(selector)
.withTreatment(treatment)
.withPriority(intent.priority())
.fromApp(appId)
.makePermanent()
.withFlag(ForwardingObjective.Flag.VERSATILE)
.add();
objectives.add(objective);
}
return objectives;
}
}