| /* |
| * 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.onlab.onos.store.packet.impl; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| import java.io.IOException; |
| |
| 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.onos.cluster.ClusterService; |
| import org.onlab.onos.cluster.NodeId; |
| import org.onlab.onos.mastership.MastershipService; |
| import org.onlab.onos.net.packet.OutboundPacket; |
| import org.onlab.onos.net.packet.PacketEvent; |
| import org.onlab.onos.net.packet.PacketEvent.Type; |
| import org.onlab.onos.net.packet.PacketStore; |
| import org.onlab.onos.net.packet.PacketStoreDelegate; |
| import org.onlab.onos.store.AbstractStore; |
| import org.onlab.onos.store.cluster.messaging.ClusterCommunicationService; |
| import org.onlab.onos.store.cluster.messaging.ClusterMessage; |
| import org.onlab.onos.store.cluster.messaging.ClusterMessageHandler; |
| import org.onlab.onos.store.cluster.messaging.MessageSubject; |
| import org.onlab.onos.store.serializers.KryoNamespaces; |
| import org.onlab.onos.store.serializers.KryoSerializer; |
| import org.onlab.util.KryoNamespace; |
| import org.slf4j.Logger; |
| |
| /** |
| * Distributed packet store implementation allowing packets to be sent to |
| * remote instances. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class DistributedPacketStore |
| extends AbstractStore<PacketEvent, PacketStoreDelegate> |
| implements PacketStore { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private MastershipService mastershipService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private ClusterService clusterService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private ClusterCommunicationService communicationService; |
| |
| private static final MessageSubject PACKET_OUT_SUBJECT = |
| new MessageSubject("packet-out"); |
| |
| private static final KryoSerializer SERIALIZER = new KryoSerializer() { |
| @Override |
| protected void setupKryoPool() { |
| serializerPool = KryoNamespace.newBuilder() |
| .register(KryoNamespaces.API) |
| .build() |
| .populate(1); |
| } |
| }; |
| |
| @Activate |
| public void activate() { |
| log.info("Started"); |
| |
| communicationService.addSubscriber( |
| PACKET_OUT_SUBJECT, new InternalClusterMessageHandler()); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public void emit(OutboundPacket packet) { |
| NodeId myId = clusterService.getLocalNode().id(); |
| NodeId master = mastershipService.getMasterFor(packet.sendThrough()); |
| |
| if (myId.equals(master)) { |
| notifyDelegate(new PacketEvent(Type.EMIT, packet)); |
| return; |
| } |
| |
| try { |
| communicationService.unicast(new ClusterMessage( |
| myId, PACKET_OUT_SUBJECT, SERIALIZER.encode(packet)), master); |
| } catch (IOException e) { |
| log.warn("Failed to send packet-out to {}", master); |
| } |
| } |
| |
| /** |
| * Handles incoming cluster messages. |
| */ |
| private class InternalClusterMessageHandler implements ClusterMessageHandler { |
| @Override |
| public void handle(ClusterMessage message) { |
| if (!message.subject().equals(PACKET_OUT_SUBJECT)) { |
| log.warn("Received message with wrong subject: {}", message); |
| } |
| |
| OutboundPacket packet = SERIALIZER.decode(message.payload()); |
| notifyDelegate(new PacketEvent(Type.EMIT, packet)); |
| } |
| } |
| |
| } |