| package org.onlab.onos.store.cluster.impl; |
| |
| import de.javakaffee.kryoserializers.URISerializer; |
| 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.Service; |
| import org.onlab.onos.cluster.ControllerNode; |
| import org.onlab.onos.cluster.DefaultControllerNode; |
| import org.onlab.onos.cluster.NodeId; |
| import org.onlab.onos.net.ConnectPoint; |
| import org.onlab.onos.net.DefaultDevice; |
| import org.onlab.onos.net.DefaultLink; |
| import org.onlab.onos.net.DefaultPort; |
| import org.onlab.onos.net.Device; |
| import org.onlab.onos.net.DeviceId; |
| import org.onlab.onos.net.Element; |
| import org.onlab.onos.net.Link; |
| import org.onlab.onos.net.LinkKey; |
| import org.onlab.onos.net.MastershipRole; |
| import org.onlab.onos.net.Port; |
| import org.onlab.onos.net.PortNumber; |
| import org.onlab.onos.net.provider.ProviderId; |
| import org.onlab.onos.store.cluster.messaging.ClusterMessage; |
| import org.onlab.onos.store.cluster.messaging.EchoMessage; |
| import org.onlab.onos.store.cluster.messaging.LeavingMemberMessage; |
| import org.onlab.onos.store.cluster.messaging.HelloMessage; |
| import org.onlab.onos.store.cluster.messaging.MessageSubject; |
| import org.onlab.onos.store.cluster.messaging.NewMemberMessage; |
| import org.onlab.onos.store.cluster.messaging.SerializationService; |
| import org.onlab.onos.store.serializers.ConnectPointSerializer; |
| import org.onlab.onos.store.serializers.DefaultLinkSerializer; |
| import org.onlab.onos.store.serializers.DefaultPortSerializer; |
| import org.onlab.onos.store.serializers.DeviceIdSerializer; |
| import org.onlab.onos.store.serializers.IpPrefixSerializer; |
| import org.onlab.onos.store.serializers.LinkKeySerializer; |
| import org.onlab.onos.store.serializers.NodeIdSerializer; |
| import org.onlab.onos.store.serializers.PortNumberSerializer; |
| import org.onlab.onos.store.serializers.ProviderIdSerializer; |
| import org.onlab.packet.IpPrefix; |
| import org.onlab.util.KryoPool; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.net.URI; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| |
| import static com.google.common.base.Preconditions.checkState; |
| |
| /** |
| * Factory for parsing messages sent between cluster members. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class MessageSerializer implements SerializationService { |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private static final int METADATA_LENGTH = 12; // 8 + 4 |
| private static final int LENGTH_OFFSET = 8; |
| |
| private static final long MARKER = 0xfeedcafebeaddeadL; |
| |
| private KryoPool serializerPool; |
| |
| @Activate |
| public void activate() { |
| setupKryoPool(); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| log.info("Stopped"); |
| } |
| |
| /** |
| * Sets up the common serialzers pool. |
| */ |
| protected void setupKryoPool() { |
| // FIXME Slice out types used in common to separate pool/namespace. |
| serializerPool = KryoPool.newBuilder() |
| .register(ArrayList.class, |
| HashMap.class, |
| |
| ControllerNode.State.class, |
| Device.Type.class, |
| |
| DefaultControllerNode.class, |
| DefaultDevice.class, |
| MastershipRole.class, |
| Port.class, |
| Element.class, |
| |
| Link.Type.class, |
| |
| MessageSubject.class, |
| HelloMessage.class, |
| NewMemberMessage.class, |
| LeavingMemberMessage.class, |
| EchoMessage.class |
| ) |
| .register(IpPrefix.class, new IpPrefixSerializer()) |
| .register(URI.class, new URISerializer()) |
| .register(NodeId.class, new NodeIdSerializer()) |
| .register(ProviderId.class, new ProviderIdSerializer()) |
| .register(DeviceId.class, new DeviceIdSerializer()) |
| .register(PortNumber.class, new PortNumberSerializer()) |
| .register(DefaultPort.class, new DefaultPortSerializer()) |
| .register(LinkKey.class, new LinkKeySerializer()) |
| .register(ConnectPoint.class, new ConnectPointSerializer()) |
| .register(DefaultLink.class, new DefaultLinkSerializer()) |
| .build() |
| .populate(1); |
| } |
| |
| |
| @Override |
| public ClusterMessage decode(ByteBuffer buffer) { |
| try { |
| // Do we have enough bytes to read the header? If not, bail. |
| if (buffer.remaining() < METADATA_LENGTH) { |
| return null; |
| } |
| |
| // Peek at the length and if we have enough to read the entire message |
| // go ahead, otherwise bail. |
| int length = buffer.getInt(buffer.position() + LENGTH_OFFSET); |
| if (buffer.remaining() < length) { |
| return null; |
| } |
| |
| // At this point, we have enough data to read a complete message. |
| long marker = buffer.getLong(); |
| checkState(marker == MARKER, "Incorrect message marker"); |
| length = buffer.getInt(); |
| |
| // TODO: sanity checking for length |
| byte[] data = new byte[length - METADATA_LENGTH]; |
| buffer.get(data); |
| return (ClusterMessage) serializerPool.deserialize(data); |
| |
| } catch (Exception e) { |
| // TODO: recover from exceptions by forwarding stream to next marker |
| log.warn("Unable to decode message due to: " + e); |
| } |
| return null; |
| } |
| |
| @Override |
| public void encode(ClusterMessage message, ByteBuffer buffer) { |
| try { |
| byte[] data = serializerPool.serialize(message); |
| buffer.putLong(MARKER); |
| buffer.putInt(data.length + METADATA_LENGTH); |
| buffer.put(data); |
| |
| } catch (Exception e) { |
| // TODO: recover from exceptions by forwarding stream to next marker |
| log.warn("Unable to encode message due to: " + e); |
| } |
| } |
| |
| } |