Madan Jampani | ec1df02 | 2015-10-13 21:23:03 -0700 | [diff] [blame] | 1 | package org.onosproject.cluster.impl; |
| 2 | |
| 3 | import static com.google.common.base.Preconditions.checkNotNull; |
| 4 | import static org.slf4j.LoggerFactory.getLogger; |
| 5 | |
| 6 | import java.net.InetAddress; |
| 7 | import java.net.NetworkInterface; |
| 8 | import java.net.SocketException; |
| 9 | import java.util.Collection; |
| 10 | import java.util.Enumeration; |
| 11 | |
| 12 | import org.apache.felix.scr.annotations.Activate; |
| 13 | import org.apache.felix.scr.annotations.Component; |
| 14 | import org.apache.felix.scr.annotations.Deactivate; |
| 15 | import org.apache.felix.scr.annotations.Reference; |
| 16 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 17 | import org.apache.felix.scr.annotations.Service; |
| 18 | import org.onlab.packet.IpAddress; |
| 19 | import org.onosproject.cluster.ClusterMetadata; |
| 20 | import org.onosproject.cluster.ClusterMetadataEvent; |
| 21 | import org.onosproject.cluster.ClusterMetadataEventListener; |
| 22 | import org.onosproject.cluster.ClusterMetadataService; |
| 23 | import org.onosproject.cluster.ClusterMetadataStore; |
| 24 | import org.onosproject.cluster.ClusterMetadataStoreDelegate; |
| 25 | import org.onosproject.cluster.ControllerNode; |
| 26 | import org.onosproject.event.AbstractListenerManager; |
| 27 | import org.onosproject.store.service.Versioned; |
| 28 | import org.slf4j.Logger; |
| 29 | |
| 30 | /** |
| 31 | * Implementation of ClusterMetadataService. |
| 32 | */ |
| 33 | @Component(immediate = true) |
| 34 | @Service |
| 35 | public class ClusterMetadataManager |
| 36 | extends AbstractListenerManager<ClusterMetadataEvent, ClusterMetadataEventListener> |
| 37 | implements ClusterMetadataService { |
| 38 | |
| 39 | private ControllerNode localNode; |
| 40 | private final Logger log = getLogger(getClass()); |
| 41 | |
| 42 | private ClusterMetadataStoreDelegate delegate = new InternalStoreDelegate(); |
| 43 | |
| 44 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 45 | protected ClusterMetadataStore store; |
| 46 | |
| 47 | @Activate |
| 48 | public void activate() { |
| 49 | store.setDelegate(delegate); |
| 50 | eventDispatcher.addSink(ClusterMetadataEvent.class, listenerRegistry); |
| 51 | establishSelfIdentity(); |
| 52 | log.info("Started"); |
| 53 | } |
| 54 | |
| 55 | @Deactivate |
| 56 | public void deactivate() { |
| 57 | store.unsetDelegate(delegate); |
| 58 | eventDispatcher.removeSink(ClusterMetadataEvent.class); |
| 59 | log.info("Stopped"); |
| 60 | } |
| 61 | |
| 62 | @Override |
| 63 | public ClusterMetadata getClusterMetadata() { |
| 64 | return Versioned.valueOrElse(store.getClusterMetadata(), null); |
| 65 | } |
| 66 | |
| 67 | @Override |
| 68 | public ControllerNode getLocalNode() { |
| 69 | return localNode; |
| 70 | } |
| 71 | |
| 72 | @Override |
| 73 | public void setClusterMetadata(ClusterMetadata metadata) { |
| 74 | checkNotNull(metadata, "Cluster metadata cannot be null"); |
| 75 | store.setClusterMetadata(metadata); |
| 76 | } |
| 77 | |
| 78 | // Store delegate to re-post events emitted from the store. |
| 79 | private class InternalStoreDelegate implements ClusterMetadataStoreDelegate { |
| 80 | @Override |
| 81 | public void notify(ClusterMetadataEvent event) { |
| 82 | post(event); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | private IpAddress findLocalIp(Collection<ControllerNode> controllerNodes) throws SocketException { |
| 87 | Enumeration<NetworkInterface> interfaces = |
| 88 | NetworkInterface.getNetworkInterfaces(); |
| 89 | while (interfaces.hasMoreElements()) { |
| 90 | NetworkInterface iface = interfaces.nextElement(); |
| 91 | Enumeration<InetAddress> inetAddresses = iface.getInetAddresses(); |
| 92 | while (inetAddresses.hasMoreElements()) { |
| 93 | IpAddress ip = IpAddress.valueOf(inetAddresses.nextElement()); |
| 94 | if (controllerNodes.stream() |
| 95 | .map(ControllerNode::ip) |
| 96 | .anyMatch(nodeIp -> ip.equals(nodeIp))) { |
| 97 | return ip; |
| 98 | } |
| 99 | } |
| 100 | } |
| 101 | throw new IllegalStateException("Unable to determine local ip"); |
| 102 | } |
| 103 | |
| 104 | private void establishSelfIdentity() { |
| 105 | try { |
| 106 | IpAddress ip = findLocalIp(getClusterMetadata().getNodes()); |
| 107 | localNode = getClusterMetadata().getNodes() |
| 108 | .stream() |
| 109 | .filter(node -> node.ip().equals(ip)) |
| 110 | .findFirst() |
| 111 | .get(); |
| 112 | } catch (SocketException e) { |
| 113 | throw new IllegalStateException("Cannot determine local IP", e); |
| 114 | } |
| 115 | } |
| 116 | } |