Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 1 | package org.onlab.onos.cluster.impl; |
| 2 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 3 | import org.apache.felix.scr.annotations.Activate; |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 4 | import org.apache.felix.scr.annotations.Component; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 5 | import org.apache.felix.scr.annotations.Deactivate; |
| 6 | import org.apache.felix.scr.annotations.Reference; |
| 7 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 8 | import org.apache.felix.scr.annotations.Service; |
| 9 | import org.onlab.onos.cluster.ClusterService; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 10 | import org.onlab.onos.cluster.MastershipAdminService; |
| 11 | import org.onlab.onos.cluster.MastershipEvent; |
| 12 | import org.onlab.onos.cluster.MastershipListener; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 13 | import org.onlab.onos.cluster.MastershipService; |
| 14 | import org.onlab.onos.cluster.MastershipStore; |
| 15 | import org.onlab.onos.cluster.NodeId; |
| 16 | import org.onlab.onos.event.AbstractListenerRegistry; |
| 17 | import org.onlab.onos.event.EventDeliveryService; |
| 18 | import org.onlab.onos.net.DeviceId; |
| 19 | import org.onlab.onos.net.MastershipRole; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 20 | import org.slf4j.Logger; |
| 21 | |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 22 | import java.util.Set; |
| 23 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 24 | import static com.google.common.base.Preconditions.checkNotNull; |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 25 | import static org.slf4j.LoggerFactory.getLogger; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 26 | |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 27 | @Component(immediate = true) |
| 28 | @Service |
Ayaka Koshibe | 3eed2b0 | 2014-09-23 13:28:05 -0700 | [diff] [blame] | 29 | public class MastershipManager |
Ayaka Koshibe | 3eed2b0 | 2014-09-23 13:28:05 -0700 | [diff] [blame] | 30 | implements MastershipService, MastershipAdminService { |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 31 | |
| 32 | private static final String NODE_ID_NULL = "Node ID cannot be null"; |
| 33 | private static final String DEVICE_ID_NULL = "Device ID cannot be null"; |
| 34 | private static final String ROLE_NULL = "Mastership role cannot be null"; |
| 35 | |
| 36 | private final Logger log = getLogger(getClass()); |
| 37 | |
| 38 | protected final AbstractListenerRegistry<MastershipEvent, MastershipListener> |
| 39 | listenerRegistry = new AbstractListenerRegistry<>(); |
| 40 | |
| 41 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 42 | protected MastershipStore store; |
| 43 | |
| 44 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 45 | protected EventDeliveryService eventDispatcher; |
| 46 | |
| 47 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 48 | protected ClusterService clusterService; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 49 | |
| 50 | @Activate |
| 51 | public void activate() { |
| 52 | eventDispatcher.addSink(MastershipEvent.class, listenerRegistry); |
| 53 | log.info("Started"); |
| 54 | } |
| 55 | |
| 56 | @Deactivate |
| 57 | public void deactivate() { |
| 58 | eventDispatcher.removeSink(MastershipEvent.class); |
| 59 | log.info("Stopped"); |
| 60 | } |
| 61 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 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); |
Ayaka Koshibe | a7f044e | 2014-09-23 16:56:20 -0700 | [diff] [blame] | 67 | MastershipEvent event = store.setRole(nodeId, deviceId, role); |
| 68 | if (event != null) { |
| 69 | post(event); |
| 70 | } |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | @Override |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 74 | public MastershipRole getLocalRole(DeviceId deviceId) { |
| 75 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 76 | return store.getRole(clusterService.getLocalNode().id(), deviceId); |
| 77 | } |
| 78 | |
| 79 | @Override |
| 80 | public void relinquishMastership(DeviceId deviceId) { |
| 81 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 82 | // FIXME: add method to store to give up mastership and trigger new master selection process |
| 83 | } |
| 84 | |
| 85 | @Override |
| 86 | public MastershipRole requestRoleFor(DeviceId deviceId) { |
| 87 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 88 | return store.requestRole(deviceId); |
| 89 | } |
| 90 | |
| 91 | @Override |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 92 | public NodeId getMasterFor(DeviceId deviceId) { |
| 93 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 94 | return store.getMaster(deviceId); |
| 95 | } |
| 96 | |
| 97 | @Override |
| 98 | public Set<DeviceId> getDevicesOf(NodeId nodeId) { |
| 99 | checkNotNull(nodeId, NODE_ID_NULL); |
| 100 | return store.getDevices(nodeId); |
| 101 | } |
| 102 | |
| 103 | @Override |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 104 | public void addListener(MastershipListener listener) { |
| 105 | checkNotNull(listener); |
| 106 | listenerRegistry.addListener(listener); |
| 107 | } |
| 108 | |
| 109 | @Override |
| 110 | public void removeListener(MastershipListener listener) { |
| 111 | checkNotNull(listener); |
| 112 | listenerRegistry.removeListener(listener); |
| 113 | } |
| 114 | |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 115 | // FIXME: provide wiring to allow events to be triggered by changes within the store |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 116 | |
| 117 | // Posts the specified event to the local event dispatcher. |
| 118 | private void post(MastershipEvent event) { |
| 119 | if (event != null && eventDispatcher != null) { |
| 120 | eventDispatcher.post(event); |
| 121 | } |
| 122 | } |
Ayaka Koshibe | 3eed2b0 | 2014-09-23 13:28:05 -0700 | [diff] [blame] | 123 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 124 | } |