| /* |
| * Copyright 2017-present 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.installer; |
| |
| 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.net.flow.FlowRule; |
| import org.onosproject.net.flow.FlowRuleOperations; |
| import org.onosproject.net.flow.FlowRuleOperationsContext; |
| import org.onosproject.net.flow.FlowRuleService; |
| import org.onosproject.net.intent.FlowRuleIntent; |
| import org.onosproject.net.intent.IntentInstallCoordinator; |
| import org.onosproject.net.intent.IntentData; |
| import org.onosproject.net.intent.IntentExtensionService; |
| import org.onosproject.net.intent.IntentOperationContext; |
| import org.onosproject.net.intent.IntentInstaller; |
| import org.onosproject.net.intent.impl.IntentManager; |
| import org.onosproject.net.intent.impl.ObjectiveTrackerService; |
| import org.slf4j.Logger; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.Set; |
| import static org.onosproject.net.intent.IntentInstaller.Direction.ADD; |
| import static org.onosproject.net.intent.IntentInstaller.Direction.REMOVE; |
| import static org.onosproject.net.intent.IntentState.INSTALLED; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Installer for FlowRuleIntent. |
| */ |
| @Component(immediate = true) |
| public class FlowRuleIntentInstaller implements IntentInstaller<FlowRuleIntent> { |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected IntentExtensionService intentExtensionService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ObjectiveTrackerService trackerService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected IntentInstallCoordinator intentInstallCoordinator; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected FlowRuleService flowRuleService; |
| |
| @Activate |
| public void activate() { |
| intentExtensionService.registerInstaller(FlowRuleIntent.class, this); |
| } |
| |
| @Deactivate |
| public void deactivated() { |
| intentExtensionService.unregisterInstaller(FlowRuleIntent.class); |
| } |
| |
| protected final Logger log = getLogger(IntentManager.class); |
| |
| @Override |
| public void apply(IntentOperationContext<FlowRuleIntent> context) { |
| Optional<IntentData> toUninstall = context.toUninstall(); |
| Optional<IntentData> toInstall = context.toInstall(); |
| |
| List<FlowRuleIntent> uninstallIntents = context.intentsToUninstall(); |
| List<FlowRuleIntent> installIntents = context.intentsToInstall(); |
| |
| if (!toInstall.isPresent() && !toUninstall.isPresent()) { |
| intentInstallCoordinator.intentInstallSuccess(context); |
| return; |
| } else if (!toInstall.isPresent()) { |
| // Uninstall only |
| trackIntentResources(toUninstall.get(), uninstallIntents, REMOVE); |
| } else if (!toUninstall.isPresent()) { |
| // Install only |
| trackIntentResources(toInstall.get(), installIntents, ADD); |
| } else { |
| IntentData uninstall = toUninstall.get(); |
| IntentData install = toInstall.get(); |
| |
| // Filter out same intents and intents with same flow rules |
| Iterator<FlowRuleIntent> iterator = installIntents.iterator(); |
| while (iterator.hasNext()) { |
| FlowRuleIntent installIntent = iterator.next(); |
| uninstallIntents.stream().filter(uIntent -> { |
| if (uIntent.equals(installIntent)) { |
| return true; |
| } else { |
| return !flowRuleIntentChanged(uIntent, installIntent); |
| } |
| }).findFirst().ifPresent(common -> { |
| uninstallIntents.remove(common); |
| if (INSTALLED.equals(uninstall.state())) { |
| // only remove the install intent if the existing |
| // intent (i.e. the uninstall one) is already |
| // installed or installing |
| iterator.remove(); |
| } |
| }); |
| } |
| trackIntentResources(uninstall, uninstallIntents, REMOVE); |
| trackIntentResources(install, installIntents, ADD); |
| } |
| |
| FlowRuleOperations.Builder builder = FlowRuleOperations.builder(); |
| builder.newStage(); |
| |
| toUninstall.ifPresent(intentData -> { |
| uninstallIntents.stream().map(FlowRuleIntent::flowRules) |
| .flatMap(Collection::stream).forEach(builder::remove); |
| }); |
| |
| toInstall.ifPresent(intentData -> { |
| installIntents.stream().map(FlowRuleIntent::flowRules) |
| .flatMap(Collection::stream).forEach(builder::add); |
| }); |
| |
| FlowRuleOperationsContext flowRuleOperationsContext = new FlowRuleOperationsContext() { |
| @Override |
| public void onSuccess(FlowRuleOperations ops) { |
| intentInstallCoordinator.intentInstallSuccess(context); |
| } |
| |
| @Override |
| public void onError(FlowRuleOperations ops) { |
| intentInstallCoordinator.intentInstallFailed(context); |
| } |
| }; |
| |
| FlowRuleOperations operations = builder.build(flowRuleOperationsContext); |
| |
| |
| log.debug("applying intent {} -> {} with {} rules: {}", |
| toUninstall.map(x -> x.key().toString()).orElse("<empty>"), |
| toInstall.map(x -> x.key().toString()).orElse("<empty>"), |
| operations.stages().stream().mapToLong(Set::size).sum(), |
| operations.stages()); |
| flowRuleService.apply(operations); |
| } |
| |
| /** |
| * Track or un-track network resource of a Intent and it's installable |
| * Intents. |
| * |
| * @param intentData the Intent data |
| * @param intentsToApply the list of flow rule Intents from the Intent |
| * @param direction the direction to determine track or un-track |
| */ |
| private void trackIntentResources(IntentData intentData, List<FlowRuleIntent> intentsToApply, Direction direction) { |
| switch (direction) { |
| case ADD: |
| trackerService.addTrackedResources(intentData.key(), intentData.intent().resources()); |
| intentsToApply.forEach(installable -> |
| trackerService.addTrackedResources(intentData.key(), |
| installable.resources())); |
| break; |
| default: |
| trackerService.removeTrackedResources(intentData.key(), intentData.intent().resources()); |
| intentsToApply.forEach(installable -> |
| trackerService.removeTrackedResources(intentData.intent().key(), |
| installable.resources())); |
| break; |
| } |
| } |
| |
| /** |
| * Determines whether there is any flow rule changed |
| * (i.e., different set of flow rules or different treatments) |
| * between FlowRuleIntents to be uninstalled and to be installed. |
| * |
| * @param uninstallIntent FlowRuleIntent to uninstall |
| * @param installIntent FlowRuleIntent to install |
| * @return true if flow rules which to be uninstalled contains all flow |
| * rules which to be installed; false otherwise |
| */ |
| private boolean flowRuleIntentChanged(FlowRuleIntent uninstallIntent, |
| FlowRuleIntent installIntent) { |
| Collection<FlowRule> flowRulesToUninstall = uninstallIntent.flowRules(); |
| Collection<FlowRule> flowRulesToInstall = installIntent.flowRules(); |
| |
| // Check if any flow rule changed |
| for (FlowRule flowRuleToInstall : flowRulesToInstall) { |
| if (flowRulesToUninstall.stream().noneMatch(flowRuleToInstall::exactMatch)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| } |