Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 1 | package org.onlab.onos.cluster.impl; |
| 2 | |
| 3 | import static org.slf4j.LoggerFactory.getLogger; |
| 4 | |
| 5 | import java.util.Set; |
| 6 | |
| 7 | import org.apache.felix.scr.annotations.Activate; |
| 8 | import org.apache.felix.scr.annotations.Deactivate; |
| 9 | import org.apache.felix.scr.annotations.Reference; |
| 10 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 11 | import org.onlab.onos.cluster.MastershipAdminService; |
| 12 | import org.onlab.onos.cluster.MastershipEvent; |
| 13 | import org.onlab.onos.cluster.MastershipListener; |
| 14 | import org.onlab.onos.cluster.MastershipProvider; |
| 15 | import org.onlab.onos.cluster.MastershipProviderService; |
| 16 | import org.onlab.onos.cluster.MastershipService; |
| 17 | import org.onlab.onos.cluster.MastershipStore; |
| 18 | import org.onlab.onos.cluster.NodeId; |
| 19 | import org.onlab.onos.event.AbstractListenerRegistry; |
| 20 | import org.onlab.onos.event.EventDeliveryService; |
| 21 | import org.onlab.onos.net.DeviceId; |
| 22 | import org.onlab.onos.net.MastershipRole; |
| 23 | import org.onlab.onos.net.provider.AbstractProviderService; |
| 24 | import org.slf4j.Logger; |
| 25 | |
| 26 | import static com.google.common.base.Preconditions.checkNotNull; |
| 27 | |
| 28 | public class MastershipManager implements MastershipService, |
| 29 | MastershipAdminService { |
| 30 | |
| 31 | private static final String NODE_ID_NULL = "Node ID cannot be null"; |
| 32 | private static final String DEVICE_ID_NULL = "Device ID cannot be null"; |
| 33 | private static final String ROLE_NULL = "Mastership role cannot be null"; |
| 34 | |
| 35 | private final Logger log = getLogger(getClass()); |
| 36 | |
| 37 | protected final AbstractListenerRegistry<MastershipEvent, MastershipListener> |
| 38 | listenerRegistry = new AbstractListenerRegistry<>(); |
| 39 | |
| 40 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 41 | protected MastershipStore store; |
| 42 | |
| 43 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 44 | protected EventDeliveryService eventDispatcher; |
| 45 | |
| 46 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 47 | protected ClusterManager clusterManager; |
| 48 | |
| 49 | @Activate |
| 50 | public void activate() { |
| 51 | eventDispatcher.addSink(MastershipEvent.class, listenerRegistry); |
| 52 | log.info("Started"); |
| 53 | } |
| 54 | |
| 55 | @Deactivate |
| 56 | public void deactivate() { |
| 57 | eventDispatcher.removeSink(MastershipEvent.class); |
| 58 | log.info("Stopped"); |
| 59 | } |
| 60 | |
| 61 | |
| 62 | @Override |
| 63 | public void setRole(NodeId nodeId, DeviceId deviceId, MastershipRole role) { |
| 64 | checkNotNull(nodeId, NODE_ID_NULL); |
| 65 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 66 | checkNotNull(role, ROLE_NULL); |
| 67 | store.setRole(nodeId, deviceId, role); |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | public NodeId getMasterFor(DeviceId deviceId) { |
| 72 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 73 | return store.getMaster(deviceId); |
| 74 | } |
| 75 | |
| 76 | @Override |
| 77 | public Set<DeviceId> getDevicesOf(NodeId nodeId) { |
| 78 | checkNotNull(nodeId, NODE_ID_NULL); |
| 79 | return store.getDevices(nodeId); |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | public MastershipRole requestRoleFor(DeviceId deviceId) { |
| 84 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 85 | NodeId id = clusterManager.getLocalNode().id(); |
| 86 | return store.getRole(id, deviceId); |
| 87 | } |
| 88 | |
| 89 | @Override |
| 90 | public void addListener(MastershipListener listener) { |
| 91 | checkNotNull(listener); |
| 92 | listenerRegistry.addListener(listener); |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public void removeListener(MastershipListener listener) { |
| 97 | checkNotNull(listener); |
| 98 | listenerRegistry.removeListener(listener); |
| 99 | } |
| 100 | |
| 101 | private class InternalMastershipProviderService |
| 102 | extends AbstractProviderService<MastershipProvider> |
| 103 | implements MastershipProviderService { |
| 104 | |
| 105 | protected InternalMastershipProviderService(MastershipProvider provider) { |
| 106 | super(provider); |
| 107 | } |
| 108 | |
| 109 | @Override |
| 110 | public void roleChanged(DeviceId deviceId, MastershipRole role) { |
| 111 | // TODO Auto-generated method stub |
| 112 | |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | // Posts the specified event to the local event dispatcher. |
| 117 | private void post(MastershipEvent event) { |
| 118 | if (event != null && eventDispatcher != null) { |
| 119 | eventDispatcher.post(event); |
| 120 | } |
| 121 | } |
| 122 | } |