| /* |
| * Copyright 2015-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.store.flowobjective.impl; |
| |
| 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.apache.felix.scr.annotations.Service; |
| import org.onlab.util.KryoNamespace; |
| import org.onosproject.net.behaviour.DefaultNextGroup; |
| import org.onosproject.net.behaviour.NextGroup; |
| import org.onosproject.net.flowobjective.FlowObjectiveStore; |
| import org.onosproject.net.flowobjective.FlowObjectiveStoreDelegate; |
| import org.onosproject.net.flowobjective.ObjectiveEvent; |
| import org.onosproject.store.AbstractStore; |
| import org.onosproject.store.service.AtomicCounter; |
| import org.onosproject.store.service.ConsistentMap; |
| import org.onosproject.store.service.MapEvent; |
| import org.onosproject.store.service.MapEventListener; |
| import org.onosproject.store.service.Serializer; |
| import org.onosproject.store.service.StorageService; |
| import org.onosproject.store.service.Versioned; |
| import org.slf4j.Logger; |
| |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.LinkedBlockingQueue; |
| |
| /** |
| * Manages the inventory of created next groups. |
| */ |
| @Component(immediate = true, enabled = true) |
| @Service |
| public class DistributedFlowObjectiveStore |
| extends AbstractStore<ObjectiveEvent, FlowObjectiveStoreDelegate> |
| implements FlowObjectiveStore { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private ConsistentMap<Integer, byte[]> nextGroups; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected StorageService storageService; |
| |
| private AtomicCounter nextIds; |
| private MapEventListener<Integer, byte[]> mapListener = new NextGroupListener(); |
| // event queue to separate map-listener threads from event-handler threads (tpool) |
| private BlockingQueue<ObjectiveEvent> eventQ; |
| private ExecutorService tpool; |
| |
| @Activate |
| public void activate() { |
| tpool = Executors.newFixedThreadPool(4, groupedThreads("onos/flobj-notifier", "%d", log)); |
| eventQ = new LinkedBlockingQueue<ObjectiveEvent>(); |
| tpool.execute(new FlowObjectiveNotifier()); |
| nextGroups = storageService.<Integer, byte[]>consistentMapBuilder() |
| .withName("flowobjective-groups") |
| .withSerializer(Serializer.using( |
| new KryoNamespace.Builder() |
| .register(byte[].class) |
| .register(Versioned.class) |
| .build("DistributedFlowObjectiveStore"))) |
| .build(); |
| nextGroups.addListener(mapListener); |
| nextIds = storageService.getAtomicCounter("next-objective-counter"); |
| log.info("Started"); |
| } |
| |
| |
| @Deactivate |
| public void deactivate() { |
| tpool.shutdown(); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public void putNextGroup(Integer nextId, NextGroup group) { |
| nextGroups.put(nextId, group.data()); |
| } |
| |
| @Override |
| public NextGroup getNextGroup(Integer nextId) { |
| Versioned<byte[]> versionGroup = nextGroups.get(nextId); |
| if (versionGroup != null) { |
| return new DefaultNextGroup(versionGroup.value()); |
| } |
| return null; |
| } |
| |
| @Override |
| public NextGroup removeNextGroup(Integer nextId) { |
| Versioned<byte[]> versionGroup = nextGroups.remove(nextId); |
| if (versionGroup != null) { |
| return new DefaultNextGroup(versionGroup.value()); |
| } |
| return null; |
| } |
| |
| @Override |
| public Map<Integer, NextGroup> getAllGroups() { |
| Map<Integer, NextGroup> nextGroupMappings = new HashMap<>(); |
| for (int key : nextGroups.keySet()) { |
| NextGroup nextGroup = getNextGroup(key); |
| if (nextGroup != null) { |
| nextGroupMappings.put(key, nextGroup); |
| } |
| } |
| return nextGroupMappings; |
| } |
| |
| @Override |
| public int allocateNextId() { |
| return (int) nextIds.incrementAndGet(); |
| } |
| |
| private class FlowObjectiveNotifier implements Runnable { |
| @Override |
| public void run() { |
| try { |
| while (!Thread.currentThread().isInterrupted()) { |
| notifyDelegate(eventQ.take()); |
| } |
| } catch (InterruptedException ex) { |
| Thread.currentThread().interrupt(); |
| } |
| } |
| } |
| |
| private class NextGroupListener implements MapEventListener<Integer, byte[]> { |
| @Override |
| public void event(MapEvent<Integer, byte[]> event) { |
| switch (event.type()) { |
| case INSERT: |
| eventQ.add(new ObjectiveEvent(ObjectiveEvent.Type.ADD, event.key())); |
| break; |
| case REMOVE: |
| eventQ.add(new ObjectiveEvent(ObjectiveEvent.Type.REMOVE, event.key())); |
| break; |
| case UPDATE: |
| // TODO Introduce UPDATE ObjectiveEvent when the map is being updated |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| } |