| package org.onlab.onos.cluster.impl; |
| |
| 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.ClusterEvent; |
| import org.onlab.onos.cluster.ClusterEventListener; |
| import org.onlab.onos.cluster.ClusterService; |
| import org.onlab.onos.cluster.ClusterStore; |
| import org.onlab.onos.cluster.ControllerNode; |
| import org.onlab.onos.cluster.NodeId; |
| import org.onlab.onos.event.AbstractListenerRegistry; |
| import org.onlab.onos.event.EventDeliveryService; |
| import org.slf4j.Logger; |
| |
| import java.util.Set; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Implementation of the cluster service. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class ClusterManager implements ClusterService { |
| |
| public static final String INSTANCE_ID_NULL = "Instance ID cannot be null"; |
| private final Logger log = getLogger(getClass()); |
| |
| protected final AbstractListenerRegistry<ClusterEvent, ClusterEventListener> |
| listenerRegistry = new AbstractListenerRegistry<>(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ClusterStore store; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected EventDeliveryService eventDispatcher; |
| |
| @Activate |
| public void activate() { |
| eventDispatcher.addSink(ClusterEvent.class, listenerRegistry); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| eventDispatcher.removeSink(ClusterEvent.class); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public ControllerNode getLocalNode() { |
| return store.getLocalNode(); |
| } |
| |
| @Override |
| public Set<ControllerNode> getNodes() { |
| return store.getNodes(); |
| } |
| |
| @Override |
| public ControllerNode getNode(NodeId nodeId) { |
| checkNotNull(nodeId, INSTANCE_ID_NULL); |
| return store.getNode(nodeId); |
| } |
| |
| @Override |
| public ControllerNode.State getState(NodeId nodeId) { |
| checkNotNull(nodeId, INSTANCE_ID_NULL); |
| return store.getState(nodeId); |
| } |
| |
| @Override |
| public void addListener(ClusterEventListener listener) { |
| listenerRegistry.addListener(listener); |
| } |
| |
| @Override |
| public void removeListener(ClusterEventListener listener) { |
| listenerRegistry.removeListener(listener); |
| } |
| } |