Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 1 | package org.onlab.onos.cluster.impl; |
| 2 | |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame^] | 3 | import static com.google.common.base.Preconditions.checkNotNull; |
| 4 | import static org.slf4j.LoggerFactory.getLogger; |
| 5 | |
| 6 | import java.util.Set; |
| 7 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 8 | import org.apache.felix.scr.annotations.Activate; |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 9 | import org.apache.felix.scr.annotations.Component; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 10 | import org.apache.felix.scr.annotations.Deactivate; |
| 11 | import org.apache.felix.scr.annotations.Reference; |
| 12 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 13 | import org.apache.felix.scr.annotations.Service; |
| 14 | import org.onlab.onos.cluster.ClusterService; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 15 | import org.onlab.onos.cluster.MastershipAdminService; |
| 16 | import org.onlab.onos.cluster.MastershipEvent; |
| 17 | import org.onlab.onos.cluster.MastershipListener; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 18 | import org.onlab.onos.cluster.MastershipService; |
| 19 | import org.onlab.onos.cluster.MastershipStore; |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame^] | 20 | import org.onlab.onos.cluster.MastershipStoreDelegate; |
Ayaka Koshibe | b70d34b | 2014-09-25 15:43:01 -0700 | [diff] [blame] | 21 | import org.onlab.onos.cluster.MastershipTerm; |
| 22 | import org.onlab.onos.cluster.MastershipTermService; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 23 | import org.onlab.onos.cluster.NodeId; |
| 24 | import org.onlab.onos.event.AbstractListenerRegistry; |
| 25 | import org.onlab.onos.event.EventDeliveryService; |
| 26 | import org.onlab.onos.net.DeviceId; |
| 27 | import org.onlab.onos.net.MastershipRole; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 28 | import org.slf4j.Logger; |
| 29 | |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 30 | @Component(immediate = true) |
| 31 | @Service |
Ayaka Koshibe | 3eed2b0 | 2014-09-23 13:28:05 -0700 | [diff] [blame] | 32 | public class MastershipManager |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame^] | 33 | implements MastershipService, MastershipAdminService { |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 34 | |
| 35 | private static final String NODE_ID_NULL = "Node ID cannot be null"; |
| 36 | private static final String DEVICE_ID_NULL = "Device ID cannot be null"; |
| 37 | private static final String ROLE_NULL = "Mastership role cannot be null"; |
| 38 | |
| 39 | private final Logger log = getLogger(getClass()); |
| 40 | |
| 41 | protected final AbstractListenerRegistry<MastershipEvent, MastershipListener> |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame^] | 42 | listenerRegistry = new AbstractListenerRegistry<>(); |
| 43 | |
| 44 | private final MastershipStoreDelegate delegate = new InternalDelegate(); |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 45 | |
| 46 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 47 | protected MastershipStore store; |
| 48 | |
| 49 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 50 | protected EventDeliveryService eventDispatcher; |
| 51 | |
| 52 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 53 | protected ClusterService clusterService; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 54 | |
| 55 | @Activate |
| 56 | public void activate() { |
| 57 | eventDispatcher.addSink(MastershipEvent.class, listenerRegistry); |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame^] | 58 | store.setDelegate(delegate); |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 59 | log.info("Started"); |
| 60 | } |
| 61 | |
| 62 | @Deactivate |
| 63 | public void deactivate() { |
| 64 | eventDispatcher.removeSink(MastershipEvent.class); |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame^] | 65 | store.unsetDelegate(delegate); |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 66 | log.info("Stopped"); |
| 67 | } |
| 68 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 69 | @Override |
| 70 | public void setRole(NodeId nodeId, DeviceId deviceId, MastershipRole role) { |
| 71 | checkNotNull(nodeId, NODE_ID_NULL); |
| 72 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 73 | checkNotNull(role, ROLE_NULL); |
Ayaka Koshibe | 406d010 | 2014-09-24 16:08:12 -0700 | [diff] [blame] | 74 | //TODO figure out appropriate action for non-MASTER roles, if we even set those |
| 75 | if (role.equals(MastershipRole.MASTER)) { |
| 76 | MastershipEvent event = store.setMaster(nodeId, deviceId); |
| 77 | if (event != null) { |
| 78 | post(event); |
| 79 | } |
Ayaka Koshibe | a7f044e | 2014-09-23 16:56:20 -0700 | [diff] [blame] | 80 | } |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | @Override |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 84 | public MastershipRole getLocalRole(DeviceId deviceId) { |
| 85 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 86 | return store.getRole(clusterService.getLocalNode().id(), deviceId); |
| 87 | } |
| 88 | |
| 89 | @Override |
| 90 | public void relinquishMastership(DeviceId deviceId) { |
| 91 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 92 | // FIXME: add method to store to give up mastership and trigger new master selection process |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public MastershipRole requestRoleFor(DeviceId deviceId) { |
| 97 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 98 | return store.requestRole(deviceId); |
| 99 | } |
| 100 | |
| 101 | @Override |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 102 | public NodeId getMasterFor(DeviceId deviceId) { |
| 103 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 104 | return store.getMaster(deviceId); |
| 105 | } |
| 106 | |
| 107 | @Override |
| 108 | public Set<DeviceId> getDevicesOf(NodeId nodeId) { |
| 109 | checkNotNull(nodeId, NODE_ID_NULL); |
| 110 | return store.getDevices(nodeId); |
| 111 | } |
| 112 | |
Ayaka Koshibe | b70d34b | 2014-09-25 15:43:01 -0700 | [diff] [blame] | 113 | |
| 114 | @Override |
| 115 | public MastershipTermService requestTermService() { |
| 116 | return new InternalMastershipTermService(); |
| 117 | } |
| 118 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 119 | @Override |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 120 | public void addListener(MastershipListener listener) { |
| 121 | checkNotNull(listener); |
| 122 | listenerRegistry.addListener(listener); |
| 123 | } |
| 124 | |
| 125 | @Override |
| 126 | public void removeListener(MastershipListener listener) { |
| 127 | checkNotNull(listener); |
| 128 | listenerRegistry.removeListener(listener); |
| 129 | } |
| 130 | |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 131 | // 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] | 132 | |
| 133 | // Posts the specified event to the local event dispatcher. |
| 134 | private void post(MastershipEvent event) { |
| 135 | if (event != null && eventDispatcher != null) { |
| 136 | eventDispatcher.post(event); |
| 137 | } |
| 138 | } |
Ayaka Koshibe | 3eed2b0 | 2014-09-23 13:28:05 -0700 | [diff] [blame] | 139 | |
Ayaka Koshibe | b70d34b | 2014-09-25 15:43:01 -0700 | [diff] [blame] | 140 | private class InternalMastershipTermService implements MastershipTermService { |
| 141 | |
| 142 | @Override |
| 143 | public MastershipTerm getMastershipTerm(DeviceId deviceId) { |
| 144 | return store.getTermFor(deviceId); |
| 145 | } |
| 146 | |
| 147 | } |
| 148 | |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame^] | 149 | public class InternalDelegate implements MastershipStoreDelegate { |
| 150 | |
| 151 | @Override |
| 152 | public void notify(MastershipEvent event) { |
| 153 | log.info("dispatching mastership event {}", event); |
| 154 | eventDispatcher.post(event); |
| 155 | } |
| 156 | |
| 157 | } |
| 158 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 159 | } |