| /* |
| * 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.cluster.messaging.impl; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| |
| 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.ControllerNode; |
| import org.onlab.onos.cluster.NodeId; |
| import org.onlab.onos.store.cluster.impl.ClusterMembershipEvent; |
| 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.ClusterMessageSerializer; |
| import org.onlab.onos.store.serializers.KryoNamespaces; |
| import org.onlab.onos.store.serializers.KryoSerializer; |
| import org.onlab.onos.store.serializers.MessageSubjectSerializer; |
| import org.onlab.util.KryoNamespace; |
| import org.onlab.netty.Endpoint; |
| import org.onlab.netty.Message; |
| import org.onlab.netty.MessageHandler; |
| import org.onlab.netty.MessagingService; |
| import org.onlab.netty.NettyMessagingService; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.util.concurrent.ListenableFuture; |
| |
| @Component(immediate = true) |
| @Service |
| public class ClusterCommunicationManager |
| implements ClusterCommunicationService { |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private ClusterService clusterService; |
| |
| // TODO: This probably should not be a OSGi service. |
| private MessagingService messagingService; |
| |
| private static final KryoSerializer SERIALIZER = new KryoSerializer() { |
| @Override |
| protected void setupKryoPool() { |
| serializerPool = KryoNamespace.newBuilder() |
| .register(KryoNamespaces.API) |
| .register(ClusterMessage.class, new ClusterMessageSerializer()) |
| .register(ClusterMembershipEvent.class) |
| .register(byte[].class) |
| .register(MessageSubject.class, new MessageSubjectSerializer()) |
| .build() |
| .populate(1); |
| } |
| |
| }; |
| |
| @Activate |
| public void activate() { |
| ControllerNode localNode = clusterService.getLocalNode(); |
| NettyMessagingService netty = new NettyMessagingService(localNode.ip().toString(), localNode.tcpPort()); |
| // FIXME: workaround until it becomes a service. |
| try { |
| netty.activate(); |
| } catch (Exception e) { |
| log.error("NettyMessagingService#activate", e); |
| } |
| messagingService = netty; |
| log.info("Started on {}:{}", localNode.ip(), localNode.tcpPort()); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| // TODO: cleanup messageingService if needed. |
| // FIXME: workaround until it becomes a service. |
| try { |
| ((NettyMessagingService) messagingService).deactivate(); |
| } catch (Exception e) { |
| log.error("NettyMessagingService#deactivate", e); |
| } |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public boolean broadcast(ClusterMessage message) throws IOException { |
| boolean ok = true; |
| final ControllerNode localNode = clusterService.getLocalNode(); |
| for (ControllerNode node : clusterService.getNodes()) { |
| if (!node.equals(localNode)) { |
| ok = unicast(message, node.id()) && ok; |
| } |
| } |
| return ok; |
| } |
| |
| @Override |
| public boolean multicast(ClusterMessage message, Set<NodeId> nodes) throws IOException { |
| boolean ok = true; |
| final ControllerNode localNode = clusterService.getLocalNode(); |
| for (NodeId nodeId : nodes) { |
| if (!nodeId.equals(localNode.id())) { |
| ok = unicastUnchecked(message, nodeId) && ok; |
| } |
| } |
| return ok; |
| } |
| |
| @Override |
| public boolean unicast(ClusterMessage message, NodeId toNodeId) throws IOException { |
| ControllerNode node = clusterService.getNode(toNodeId); |
| checkArgument(node != null, "Unknown nodeId: %s", toNodeId); |
| Endpoint nodeEp = new Endpoint(node.ip().toString(), node.tcpPort()); |
| try { |
| messagingService.sendAsync(nodeEp, |
| message.subject().value(), SERIALIZER.encode(message)); |
| return true; |
| } catch (IOException e) { |
| log.trace("Failed to send cluster message to nodeId: " + toNodeId, e); |
| throw e; |
| } |
| } |
| |
| private boolean unicastUnchecked(ClusterMessage message, NodeId toNodeId) throws IOException { |
| try { |
| return unicast(message, toNodeId); |
| } catch (IOException e) { |
| return false; |
| } |
| } |
| |
| @Override |
| public ListenableFuture<byte[]> sendAndReceive(ClusterMessage message, NodeId toNodeId) throws IOException { |
| ControllerNode node = clusterService.getNode(toNodeId); |
| checkArgument(node != null, "Unknown nodeId: %s", toNodeId); |
| Endpoint nodeEp = new Endpoint(node.ip().toString(), node.tcpPort()); |
| try { |
| return messagingService.sendAndReceive(nodeEp, message.subject().value(), SERIALIZER.encode(message)); |
| |
| } catch (IOException e) { |
| log.trace("Failed interaction with remote nodeId: " + toNodeId, e); |
| throw e; |
| } |
| } |
| |
| @Override |
| public void addSubscriber(MessageSubject subject, |
| ClusterMessageHandler subscriber) { |
| messagingService.registerHandler(subject.value(), new InternalClusterMessageHandler(subscriber)); |
| } |
| |
| private final class InternalClusterMessageHandler implements MessageHandler { |
| |
| private final ClusterMessageHandler handler; |
| |
| public InternalClusterMessageHandler(ClusterMessageHandler handler) { |
| this.handler = handler; |
| } |
| |
| @Override |
| public void handle(Message message) { |
| try { |
| ClusterMessage clusterMessage = SERIALIZER.decode(message.payload()); |
| handler.handle(new InternalClusterMessage(clusterMessage, message)); |
| } catch (Exception e) { |
| log.error("Exception caught during ClusterMessageHandler", e); |
| throw e; |
| } |
| } |
| } |
| |
| public static final class InternalClusterMessage extends ClusterMessage { |
| |
| private final Message rawMessage; |
| |
| public InternalClusterMessage(ClusterMessage clusterMessage, Message rawMessage) { |
| super(clusterMessage.sender(), clusterMessage.subject(), clusterMessage.payload()); |
| this.rawMessage = rawMessage; |
| } |
| |
| @Override |
| public void respond(byte[] response) throws IOException { |
| rawMessage.respond(response); |
| } |
| } |
| } |