| /* |
| * Copyright 2014 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.packet.impl; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| 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.onosproject.net.Device; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.packet.OutboundPacket; |
| import org.onosproject.net.packet.PacketContext; |
| import org.onosproject.net.packet.PacketEvent; |
| import org.onosproject.net.packet.PacketProcessor; |
| import org.onosproject.net.packet.PacketProvider; |
| import org.onosproject.net.packet.PacketProviderRegistry; |
| import org.onosproject.net.packet.PacketProviderService; |
| import org.onosproject.net.packet.PacketService; |
| import org.onosproject.net.packet.PacketStore; |
| import org.onosproject.net.packet.PacketStoreDelegate; |
| import org.onosproject.net.provider.AbstractProviderRegistry; |
| import org.onosproject.net.provider.AbstractProviderService; |
| import org.slf4j.Logger; |
| |
| /** |
| * Provides a basic implementation of the packet SB & NB APIs. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class PacketManager |
| extends AbstractProviderRegistry<PacketProvider, PacketProviderService> |
| implements PacketService, PacketProviderRegistry { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private final PacketStoreDelegate delegate = new InternalStoreDelegate(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private PacketStore store; |
| |
| private final Map<Integer, PacketProcessor> processors = new ConcurrentHashMap<>(); |
| |
| @Activate |
| public void activate() { |
| store.setDelegate(delegate); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| store.unsetDelegate(delegate); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public void addProcessor(PacketProcessor processor, int priority) { |
| checkNotNull(processor, "Processor cannot be null"); |
| processors.put(priority, processor); |
| } |
| |
| @Override |
| public void removeProcessor(PacketProcessor processor) { |
| checkNotNull(processor, "Processor cannot be null"); |
| processors.values().remove(processor); |
| } |
| |
| @Override |
| public void emit(OutboundPacket packet) { |
| checkNotNull(packet, "Packet cannot be null"); |
| |
| store.emit(packet); |
| } |
| |
| private void localEmit(OutboundPacket packet) { |
| final Device device = deviceService.getDevice(packet.sendThrough()); |
| |
| if (device == null) { |
| return; |
| } |
| |
| final PacketProvider packetProvider = getProvider(device.providerId()); |
| |
| if (packetProvider != null) { |
| packetProvider.emit(packet); |
| } |
| } |
| |
| @Override |
| protected PacketProviderService createProviderService(PacketProvider provider) { |
| return new InternalPacketProviderService(provider); |
| } |
| |
| // Personalized link provider service issued to the supplied provider. |
| private class InternalPacketProviderService |
| extends AbstractProviderService<PacketProvider> |
| implements PacketProviderService { |
| |
| protected InternalPacketProviderService(PacketProvider provider) { |
| super(provider); |
| } |
| |
| @Override |
| public void processPacket(PacketContext context) { |
| for (PacketProcessor processor : processors.values()) { |
| processor.process(context); |
| } |
| } |
| |
| } |
| |
| /** |
| * Internal callback from the packet store. |
| */ |
| private class InternalStoreDelegate |
| implements PacketStoreDelegate { |
| @Override |
| public void notify(PacketEvent event) { |
| localEmit(event.subject()); |
| } |
| } |
| |
| } |