| /* |
| * 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.incubator.store.virtual.impl; |
| |
| import com.google.common.collect.Maps; |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onosproject.incubator.net.virtual.NetworkId; |
| import org.onosproject.incubator.net.virtual.VirtualNetworkFlowObjectiveStore; |
| import org.onosproject.net.behaviour.DefaultNextGroup; |
| import org.onosproject.net.behaviour.NextGroup; |
| import org.onosproject.net.flowobjective.FlowObjectiveStoreDelegate; |
| import org.onosproject.net.flowobjective.ObjectiveEvent; |
| import org.onosproject.store.service.AtomicCounter; |
| import org.onosproject.store.service.StorageService; |
| import org.slf4j.Logger; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.LinkedBlockingQueue; |
| |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Single instance implementation of store to manage |
| * the inventory of created next groups for virtual network. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class SimpleVirtualFlowObjectiveStore |
| extends AbstractVirtualStore<ObjectiveEvent, FlowObjectiveStoreDelegate> |
| implements VirtualNetworkFlowObjectiveStore { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private ConcurrentMap<NetworkId, ConcurrentMap<Integer, byte[]>> nextGroupsMap; |
| |
| private AtomicCounter nextIds; |
| |
| // event queue to separate map-listener threads from event-handler threads (tpool) |
| private BlockingQueue<VirtualObjectiveEvent> eventQ; |
| private ExecutorService tpool; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected StorageService storageService; |
| |
| @Activate |
| public void activate() { |
| tpool = Executors.newFixedThreadPool(4, groupedThreads("onos/virtual/flobj-notifier", "%d", log)); |
| eventQ = new LinkedBlockingQueue<>(); |
| tpool.execute(new FlowObjectiveNotifier()); |
| |
| nextGroupsMap = Maps.newConcurrentMap(); |
| |
| nextIds = storageService.getAtomicCounter("next-objective-counter"); |
| log.info("Started"); |
| } |
| |
| private ConcurrentMap<Integer, byte[]> getNextGroups(NetworkId networkId) { |
| nextGroupsMap.computeIfAbsent(networkId, n -> Maps.newConcurrentMap()); |
| return nextGroupsMap.get(networkId); |
| } |
| |
| @Override |
| public void putNextGroup(NetworkId networkId, Integer nextId, NextGroup group) { |
| ConcurrentMap<Integer, byte[]> nextGroups = getNextGroups(networkId); |
| nextGroups.put(nextId, group.data()); |
| |
| eventQ.add(new VirtualObjectiveEvent(networkId, ObjectiveEvent.Type.ADD, nextId)); |
| } |
| |
| @Override |
| public NextGroup getNextGroup(NetworkId networkId, Integer nextId) { |
| ConcurrentMap<Integer, byte[]> nextGroups = getNextGroups(networkId); |
| return new DefaultNextGroup(nextGroups.get(nextId)); |
| } |
| |
| @Override |
| public NextGroup removeNextGroup(NetworkId networkId, Integer nextId) { |
| ConcurrentMap<Integer, byte[]> nextGroups = getNextGroups(networkId); |
| eventQ.add(new VirtualObjectiveEvent(networkId, ObjectiveEvent.Type.REMOVE, nextId)); |
| return new DefaultNextGroup(nextGroups.remove(nextId)); |
| } |
| |
| @Override |
| public Map<Integer, NextGroup> getAllGroups(NetworkId networkId) { |
| ConcurrentMap<Integer, byte[]> nextGroups = getNextGroups(networkId); |
| |
| Map<Integer, NextGroup> nextGroupMappings = new HashMap<>(); |
| for (int key : nextGroups.keySet()) { |
| NextGroup nextGroup = getNextGroup(networkId, key); |
| if (nextGroup != null) { |
| nextGroupMappings.put(key, nextGroup); |
| } |
| } |
| return nextGroupMappings; |
| } |
| |
| @Override |
| public int allocateNextId(NetworkId networkId) { |
| return (int) nextIds.incrementAndGet(); |
| } |
| |
| private class FlowObjectiveNotifier implements Runnable { |
| @Override |
| public void run() { |
| try { |
| while (!Thread.currentThread().isInterrupted()) { |
| VirtualObjectiveEvent vEvent = eventQ.take(); |
| notifyDelegate(vEvent.networkId(), vEvent); |
| } |
| } catch (InterruptedException ex) { |
| Thread.currentThread().interrupt(); |
| } |
| } |
| } |
| |
| private class VirtualObjectiveEvent extends ObjectiveEvent { |
| NetworkId networkId; |
| |
| public VirtualObjectiveEvent(NetworkId networkId, Type type, |
| Integer objective) { |
| super(type, objective); |
| this.networkId = networkId; |
| } |
| |
| NetworkId networkId() { |
| return networkId; |
| } |
| } |
| } |