| package org.onosproject.cluster.impl; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| import java.net.InetAddress; |
| import java.net.NetworkInterface; |
| import java.net.SocketException; |
| import java.util.Collection; |
| import java.util.Enumeration; |
| |
| 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.packet.IpAddress; |
| import org.onosproject.cluster.ClusterMetadata; |
| import org.onosproject.cluster.ClusterMetadataEvent; |
| import org.onosproject.cluster.ClusterMetadataEventListener; |
| import org.onosproject.cluster.ClusterMetadataService; |
| import org.onosproject.cluster.ClusterMetadataStore; |
| import org.onosproject.cluster.ClusterMetadataStoreDelegate; |
| import org.onosproject.cluster.ControllerNode; |
| import org.onosproject.event.AbstractListenerManager; |
| import org.onosproject.store.service.Versioned; |
| import org.slf4j.Logger; |
| |
| /** |
| * Implementation of ClusterMetadataService. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class ClusterMetadataManager |
| extends AbstractListenerManager<ClusterMetadataEvent, ClusterMetadataEventListener> |
| implements ClusterMetadataService { |
| |
| private ControllerNode localNode; |
| private final Logger log = getLogger(getClass()); |
| |
| private ClusterMetadataStoreDelegate delegate = new InternalStoreDelegate(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ClusterMetadataStore store; |
| |
| @Activate |
| public void activate() { |
| store.setDelegate(delegate); |
| eventDispatcher.addSink(ClusterMetadataEvent.class, listenerRegistry); |
| establishSelfIdentity(); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| store.unsetDelegate(delegate); |
| eventDispatcher.removeSink(ClusterMetadataEvent.class); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public ClusterMetadata getClusterMetadata() { |
| return Versioned.valueOrElse(store.getClusterMetadata(), null); |
| } |
| |
| @Override |
| public ControllerNode getLocalNode() { |
| return localNode; |
| } |
| |
| @Override |
| public void setClusterMetadata(ClusterMetadata metadata) { |
| checkNotNull(metadata, "Cluster metadata cannot be null"); |
| store.setClusterMetadata(metadata); |
| } |
| |
| // Store delegate to re-post events emitted from the store. |
| private class InternalStoreDelegate implements ClusterMetadataStoreDelegate { |
| @Override |
| public void notify(ClusterMetadataEvent event) { |
| post(event); |
| } |
| } |
| |
| private IpAddress findLocalIp(Collection<ControllerNode> controllerNodes) throws SocketException { |
| Enumeration<NetworkInterface> interfaces = |
| NetworkInterface.getNetworkInterfaces(); |
| while (interfaces.hasMoreElements()) { |
| NetworkInterface iface = interfaces.nextElement(); |
| Enumeration<InetAddress> inetAddresses = iface.getInetAddresses(); |
| while (inetAddresses.hasMoreElements()) { |
| IpAddress ip = IpAddress.valueOf(inetAddresses.nextElement()); |
| if (controllerNodes.stream() |
| .map(ControllerNode::ip) |
| .anyMatch(nodeIp -> ip.equals(nodeIp))) { |
| return ip; |
| } |
| } |
| } |
| throw new IllegalStateException("Unable to determine local ip"); |
| } |
| |
| private void establishSelfIdentity() { |
| try { |
| IpAddress ip = findLocalIp(getClusterMetadata().getNodes()); |
| localNode = getClusterMetadata().getNodes() |
| .stream() |
| .filter(node -> node.ip().equals(ip)) |
| .findFirst() |
| .get(); |
| } catch (SocketException e) { |
| throw new IllegalStateException("Cannot determine local IP", e); |
| } |
| } |
| } |