| /* |
| * Copyright 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.net.intent.impl.compiler; |
| |
| 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.Link; |
| import org.onosproject.net.flow.DefaultFlowRule; |
| import org.onosproject.net.flow.DefaultTrafficSelector; |
| import org.onosproject.net.flow.DefaultTrafficTreatment; |
| import org.onosproject.net.flow.FlowRule; |
| import org.onosproject.net.flow.TrafficSelector; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.net.intent.FlowRuleIntent; |
| import org.onosproject.net.intent.Intent; |
| import org.onosproject.net.intent.IntentCompiler; |
| import org.onosproject.net.intent.IntentExtensionService; |
| import org.onosproject.net.intent.PathIntent; |
| import org.onosproject.net.resource.link.LinkResourceAllocations; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Set; |
| |
| @Component(immediate = true) |
| public class PathIntentCompiler implements IntentCompiler<PathIntent> { |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected IntentExtensionService intentManager; |
| |
| private ApplicationId appId; |
| |
| @Activate |
| public void activate() { |
| appId = coreService.registerApplication("org.onosproject.net.intent"); |
| intentManager.registerCompiler(PathIntent.class, this); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| intentManager.unregisterCompiler(PathIntent.class); |
| } |
| |
| @Override |
| public List<Intent> compile(PathIntent intent, List<Intent> installable, |
| Set<LinkResourceAllocations> resources) { |
| // Note: right now recompile is not considered |
| // TODO: implement recompile behavior |
| |
| List<Link> links = intent.path().links(); |
| List<FlowRule> rules = new ArrayList<>(links.size() - 1); |
| |
| for (int i = 0; i < links.size() - 1; i++) { |
| ConnectPoint ingress = links.get(i).dst(); |
| ConnectPoint egress = links.get(i + 1).src(); |
| FlowRule rule = createFlowRule(intent.selector(), intent.treatment(), |
| ingress, egress, intent.priority(), |
| isLast(links, i)); |
| rules.add(rule); |
| } |
| |
| return Collections.singletonList(new FlowRuleIntent(appId, null, rules, intent.resources())); |
| } |
| |
| private FlowRule createFlowRule(TrafficSelector originalSelector, TrafficTreatment originalTreatment, |
| ConnectPoint ingress, ConnectPoint egress, |
| int priority, boolean last) { |
| TrafficSelector selector = DefaultTrafficSelector.builder(originalSelector) |
| .matchInPort(ingress.port()) |
| .build(); |
| |
| TrafficTreatment.Builder treatmentBuilder; |
| if (last) { |
| treatmentBuilder = DefaultTrafficTreatment.builder(originalTreatment); |
| } else { |
| treatmentBuilder = DefaultTrafficTreatment.builder(); |
| } |
| TrafficTreatment treatment = treatmentBuilder.setOutput(egress.port()).build(); |
| |
| return DefaultFlowRule.builder() |
| .forDevice(ingress.deviceId()) |
| .withSelector(selector) |
| .withTreatment(treatment) |
| .withPriority(priority) |
| .fromApp(appId) |
| .makePermanent() |
| .build(); |
| } |
| |
| private boolean isLast(List<Link> links, int i) { |
| return i == links.size() - 2; |
| } |
| } |