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; |
Ayaka Koshibe | 3de43ca | 2014-09-26 16:40:23 -0700 | [diff] [blame] | 14 | import org.onlab.onos.cluster.ClusterEvent; |
| 15 | import org.onlab.onos.cluster.ClusterEventListener; |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 16 | import org.onlab.onos.cluster.ClusterService; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 17 | import org.onlab.onos.cluster.MastershipAdminService; |
| 18 | import org.onlab.onos.cluster.MastershipEvent; |
| 19 | import org.onlab.onos.cluster.MastershipListener; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 20 | import org.onlab.onos.cluster.MastershipService; |
| 21 | import org.onlab.onos.cluster.MastershipStore; |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame] | 22 | import org.onlab.onos.cluster.MastershipStoreDelegate; |
Ayaka Koshibe | b70d34b | 2014-09-25 15:43:01 -0700 | [diff] [blame] | 23 | import org.onlab.onos.cluster.MastershipTerm; |
| 24 | import org.onlab.onos.cluster.MastershipTermService; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 25 | import org.onlab.onos.cluster.NodeId; |
| 26 | import org.onlab.onos.event.AbstractListenerRegistry; |
| 27 | import org.onlab.onos.event.EventDeliveryService; |
| 28 | import org.onlab.onos.net.DeviceId; |
| 29 | import org.onlab.onos.net.MastershipRole; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 30 | import org.slf4j.Logger; |
| 31 | |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 32 | @Component(immediate = true) |
| 33 | @Service |
Ayaka Koshibe | 3eed2b0 | 2014-09-23 13:28:05 -0700 | [diff] [blame] | 34 | public class MastershipManager |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame] | 35 | implements MastershipService, MastershipAdminService { |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 36 | |
| 37 | private static final String NODE_ID_NULL = "Node ID cannot be null"; |
| 38 | private static final String DEVICE_ID_NULL = "Device ID cannot be null"; |
| 39 | private static final String ROLE_NULL = "Mastership role cannot be null"; |
| 40 | |
| 41 | private final Logger log = getLogger(getClass()); |
| 42 | |
| 43 | protected final AbstractListenerRegistry<MastershipEvent, MastershipListener> |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame] | 44 | listenerRegistry = new AbstractListenerRegistry<>(); |
| 45 | |
| 46 | private final MastershipStoreDelegate delegate = new InternalDelegate(); |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 47 | |
| 48 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 49 | protected MastershipStore store; |
| 50 | |
| 51 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 52 | protected EventDeliveryService eventDispatcher; |
| 53 | |
| 54 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
tom | 4a5d171 | 2014-09-23 17:49:39 -0700 | [diff] [blame] | 55 | protected ClusterService clusterService; |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 56 | |
Ayaka Koshibe | 3de43ca | 2014-09-26 16:40:23 -0700 | [diff] [blame] | 57 | private ClusterEventListener clusterListener = new InternalClusterEventListener(); |
| 58 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 59 | @Activate |
| 60 | public void activate() { |
| 61 | eventDispatcher.addSink(MastershipEvent.class, listenerRegistry); |
Ayaka Koshibe | 3de43ca | 2014-09-26 16:40:23 -0700 | [diff] [blame] | 62 | clusterService.addListener(clusterListener); |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame] | 63 | store.setDelegate(delegate); |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 64 | log.info("Started"); |
| 65 | } |
| 66 | |
| 67 | @Deactivate |
| 68 | public void deactivate() { |
| 69 | eventDispatcher.removeSink(MastershipEvent.class); |
Ayaka Koshibe | 3de43ca | 2014-09-26 16:40:23 -0700 | [diff] [blame] | 70 | clusterService.removeListener(clusterListener); |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame] | 71 | store.unsetDelegate(delegate); |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 72 | log.info("Stopped"); |
| 73 | } |
| 74 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 75 | @Override |
| 76 | public void setRole(NodeId nodeId, DeviceId deviceId, MastershipRole role) { |
| 77 | checkNotNull(nodeId, NODE_ID_NULL); |
| 78 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 79 | checkNotNull(role, ROLE_NULL); |
Ayaka Koshibe | d9f693e | 2014-09-29 18:04:54 -0700 | [diff] [blame] | 80 | |
Ayaka Koshibe | 971a38a | 2014-09-30 11:56:23 -0700 | [diff] [blame] | 81 | MastershipEvent event = null; |
| 82 | if (role.equals(MastershipRole.MASTER)) { |
| 83 | event = store.setMaster(nodeId, deviceId); |
Ayaka Koshibe | d9f693e | 2014-09-29 18:04:54 -0700 | [diff] [blame] | 84 | } else { |
Ayaka Koshibe | 971a38a | 2014-09-30 11:56:23 -0700 | [diff] [blame] | 85 | event = store.unsetMaster(nodeId, deviceId); |
| 86 | } |
Ayaka Koshibe | d9f693e | 2014-09-29 18:04:54 -0700 | [diff] [blame] | 87 | |
Ayaka Koshibe | 971a38a | 2014-09-30 11:56:23 -0700 | [diff] [blame] | 88 | if (event != null) { |
| 89 | post(event); |
Ayaka Koshibe | a7f044e | 2014-09-23 16:56:20 -0700 | [diff] [blame] | 90 | } |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | @Override |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 94 | public MastershipRole getLocalRole(DeviceId deviceId) { |
| 95 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 96 | return store.getRole(clusterService.getLocalNode().id(), deviceId); |
| 97 | } |
| 98 | |
| 99 | @Override |
| 100 | public void relinquishMastership(DeviceId deviceId) { |
Ayaka Koshibe | 971a38a | 2014-09-30 11:56:23 -0700 | [diff] [blame] | 101 | MastershipRole role = getLocalRole(deviceId); |
Ayaka Koshibe | d9f693e | 2014-09-29 18:04:54 -0700 | [diff] [blame] | 102 | if (!role.equals(MastershipRole.MASTER)) { |
| 103 | return; |
| 104 | } |
| 105 | |
| 106 | MastershipEvent event = store.unsetMaster( |
| 107 | clusterService.getLocalNode().id(), deviceId); |
| 108 | if (event != null) { |
| 109 | post(event); |
| 110 | } |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | @Override |
| 114 | public MastershipRole requestRoleFor(DeviceId deviceId) { |
| 115 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 116 | return store.requestRole(deviceId); |
| 117 | } |
| 118 | |
| 119 | @Override |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 120 | public NodeId getMasterFor(DeviceId deviceId) { |
| 121 | checkNotNull(deviceId, DEVICE_ID_NULL); |
| 122 | return store.getMaster(deviceId); |
| 123 | } |
| 124 | |
| 125 | @Override |
| 126 | public Set<DeviceId> getDevicesOf(NodeId nodeId) { |
| 127 | checkNotNull(nodeId, NODE_ID_NULL); |
| 128 | return store.getDevices(nodeId); |
| 129 | } |
| 130 | |
Ayaka Koshibe | b70d34b | 2014-09-25 15:43:01 -0700 | [diff] [blame] | 131 | |
| 132 | @Override |
| 133 | public MastershipTermService requestTermService() { |
| 134 | return new InternalMastershipTermService(); |
| 135 | } |
| 136 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 137 | @Override |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 138 | public void addListener(MastershipListener listener) { |
| 139 | checkNotNull(listener); |
| 140 | listenerRegistry.addListener(listener); |
| 141 | } |
| 142 | |
| 143 | @Override |
| 144 | public void removeListener(MastershipListener listener) { |
| 145 | checkNotNull(listener); |
| 146 | listenerRegistry.removeListener(listener); |
| 147 | } |
| 148 | |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 149 | // 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] | 150 | |
| 151 | // Posts the specified event to the local event dispatcher. |
| 152 | private void post(MastershipEvent event) { |
| 153 | if (event != null && eventDispatcher != null) { |
| 154 | eventDispatcher.post(event); |
| 155 | } |
| 156 | } |
Ayaka Koshibe | 3eed2b0 | 2014-09-23 13:28:05 -0700 | [diff] [blame] | 157 | |
Ayaka Koshibe | b70d34b | 2014-09-25 15:43:01 -0700 | [diff] [blame] | 158 | private class InternalMastershipTermService implements MastershipTermService { |
| 159 | |
| 160 | @Override |
| 161 | public MastershipTerm getMastershipTerm(DeviceId deviceId) { |
| 162 | return store.getTermFor(deviceId); |
| 163 | } |
| 164 | |
| 165 | } |
| 166 | |
Ayaka Koshibe | 3de43ca | 2014-09-26 16:40:23 -0700 | [diff] [blame] | 167 | //callback for reacting to cluster events |
| 168 | private class InternalClusterEventListener implements ClusterEventListener { |
| 169 | |
| 170 | @Override |
| 171 | public void event(ClusterEvent event) { |
| 172 | switch (event.type()) { |
| 173 | //FIXME: worry about addition when the time comes |
| 174 | case INSTANCE_ADDED: |
| 175 | case INSTANCE_ACTIVATED: |
| 176 | break; |
| 177 | case INSTANCE_REMOVED: |
| 178 | case INSTANCE_DEACTIVATED: |
Ayaka Koshibe | 3de43ca | 2014-09-26 16:40:23 -0700 | [diff] [blame] | 179 | break; |
| 180 | default: |
| 181 | log.warn("unknown cluster event {}", event); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | } |
Ayaka Koshibe | 65efaef | 2014-09-29 18:21:56 -0700 | [diff] [blame] | 186 | |
alshabib | 339a3d9 | 2014-09-26 17:54:32 -0700 | [diff] [blame] | 187 | public class InternalDelegate implements MastershipStoreDelegate { |
| 188 | |
| 189 | @Override |
| 190 | public void notify(MastershipEvent event) { |
| 191 | log.info("dispatching mastership event {}", event); |
| 192 | eventDispatcher.post(event); |
| 193 | } |
| 194 | |
| 195 | } |
| 196 | |
Ayaka Koshibe | 1660969 | 2014-09-23 12:46:15 -0700 | [diff] [blame] | 197 | } |