Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
Jonathan Hart | 77bdd26 | 2015-02-03 09:07:48 -0800 | [diff] [blame] | 16 | package org.onosproject.store.ecmap; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 17 | |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 18 | import com.google.common.collect.ImmutableList; |
| 19 | import com.google.common.collect.Lists; |
| 20 | import com.google.common.collect.Maps; |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 21 | import com.google.common.collect.Sets; |
Madan Jampani | 3e033bd | 2015-04-08 13:03:49 -0700 | [diff] [blame] | 22 | |
Jonathan Hart | f910823 | 2015-02-02 16:37:35 -0800 | [diff] [blame] | 23 | import org.apache.commons.lang3.tuple.Pair; |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 24 | import org.onlab.util.AbstractAccumulator; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 25 | import org.onlab.util.KryoNamespace; |
Jonathan Hart | 233a18a | 2015-03-02 17:24:58 -0800 | [diff] [blame] | 26 | import org.onlab.util.SlidingWindowCounter; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 27 | import org.onosproject.cluster.ClusterService; |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 28 | import org.onosproject.cluster.ControllerNode; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 29 | import org.onosproject.cluster.NodeId; |
| 30 | import org.onosproject.store.Timestamp; |
| 31 | import org.onosproject.store.cluster.messaging.ClusterCommunicationService; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 32 | import org.onosproject.store.cluster.messaging.MessageSubject; |
Madan Jampani | 3e033bd | 2015-04-08 13:03:49 -0700 | [diff] [blame] | 33 | import org.onosproject.store.impl.LogicalTimestamp; |
Jonathan Hart | 63939a3 | 2015-05-08 11:57:03 -0700 | [diff] [blame] | 34 | import org.onosproject.store.service.WallClockTimestamp; |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 35 | import org.onosproject.store.serializers.KryoNamespaces; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 36 | import org.onosproject.store.serializers.KryoSerializer; |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 37 | import org.onosproject.store.service.EventuallyConsistentMap; |
| 38 | import org.onosproject.store.service.EventuallyConsistentMapEvent; |
| 39 | import org.onosproject.store.service.EventuallyConsistentMapListener; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 40 | import org.slf4j.Logger; |
| 41 | import org.slf4j.LoggerFactory; |
| 42 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 43 | import static org.onosproject.store.service.EventuallyConsistentMapEvent.Type.PUT; |
| 44 | import static org.onosproject.store.service.EventuallyConsistentMapEvent.Type.REMOVE; |
| 45 | |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 46 | import java.util.Collection; |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 47 | import java.util.Collections; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 48 | import java.util.List; |
| 49 | import java.util.Map; |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 50 | import java.util.Objects; |
Madan Jampani | 43e9c9c | 2015-06-26 14:16:46 -0700 | [diff] [blame] | 51 | import java.util.Optional; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 52 | import java.util.Set; |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 53 | import java.util.Timer; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 54 | import java.util.concurrent.ExecutorService; |
| 55 | import java.util.concurrent.Executors; |
| 56 | import java.util.concurrent.ScheduledExecutorService; |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 57 | import java.util.concurrent.TimeUnit; |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 58 | import java.util.concurrent.atomic.AtomicBoolean; |
Madan Jampani | 43e9c9c | 2015-06-26 14:16:46 -0700 | [diff] [blame] | 59 | import java.util.concurrent.atomic.AtomicReference; |
Brian O'Connor | 5eb77c8 | 2015-03-02 18:09:39 -0800 | [diff] [blame] | 60 | import java.util.function.BiFunction; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 61 | import java.util.stream.Collectors; |
| 62 | |
| 63 | import static com.google.common.base.Preconditions.checkNotNull; |
| 64 | import static com.google.common.base.Preconditions.checkState; |
| 65 | import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor; |
Brian O'Connor | c6713a8 | 2015-02-24 11:55:48 -0800 | [diff] [blame] | 66 | import static org.onlab.util.BoundedThreadPool.newFixedThreadPool; |
Brian O'Connor | 4b2ba5f | 2015-02-18 20:54:00 -0800 | [diff] [blame] | 67 | import static org.onlab.util.Tools.groupedThreads; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 68 | |
| 69 | /** |
| 70 | * Distributed Map implementation which uses optimistic replication and gossip |
| 71 | * based techniques to provide an eventually consistent data store. |
| 72 | */ |
| 73 | public class EventuallyConsistentMapImpl<K, V> |
| 74 | implements EventuallyConsistentMap<K, V> { |
| 75 | |
| 76 | private static final Logger log = LoggerFactory.getLogger(EventuallyConsistentMapImpl.class); |
| 77 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 78 | private final Map<K, MapValue<V>> items; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 79 | |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 80 | private final ClusterService clusterService; |
| 81 | private final ClusterCommunicationService clusterCommunicator; |
| 82 | private final KryoSerializer serializer; |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 83 | private final NodeId localNodeId; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 84 | |
Madan Jampani | bcf1a48 | 2015-06-24 19:05:56 -0700 | [diff] [blame] | 85 | private final BiFunction<K, V, Timestamp> timestampProvider; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 86 | |
| 87 | private final MessageSubject updateMessageSubject; |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 88 | private final MessageSubject antiEntropyAdvertisementSubject; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 89 | |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 90 | private final Set<EventuallyConsistentMapListener<K, V>> listeners |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 91 | = Sets.newCopyOnWriteArraySet(); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 92 | |
| 93 | private final ExecutorService executor; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 94 | private final ScheduledExecutorService backgroundExecutor; |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 95 | private final BiFunction<K, V, Collection<NodeId>> peerUpdateFunction; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 96 | |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 97 | private final ExecutorService communicationExecutor; |
| 98 | private final Map<NodeId, EventAccumulator> senderPending; |
Madan Jampani | 2872628 | 2015-02-19 11:40:23 -0800 | [diff] [blame] | 99 | |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 100 | private volatile boolean destroyed = false; |
Jonathan Hart | 539a646 | 2015-01-27 17:05:43 -0800 | [diff] [blame] | 101 | private static final String ERROR_DESTROYED = " map is already destroyed"; |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 102 | private final String destroyedMessage; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 103 | |
Jonathan Hart | 4f397e8 | 2015-02-04 09:10:41 -0800 | [diff] [blame] | 104 | private static final String ERROR_NULL_KEY = "Key cannot be null"; |
| 105 | private static final String ERROR_NULL_VALUE = "Null values are not allowed"; |
| 106 | |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 107 | private final long initialDelaySec = 5; |
| 108 | private final boolean lightweightAntiEntropy; |
| 109 | private final boolean tombstonesDisabled; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 110 | |
Jonathan Hart | 233a18a | 2015-03-02 17:24:58 -0800 | [diff] [blame] | 111 | private static final int WINDOW_SIZE = 5; |
| 112 | private static final int HIGH_LOAD_THRESHOLD = 0; |
| 113 | private static final int LOAD_WINDOW = 2; |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 114 | private SlidingWindowCounter counter = new SlidingWindowCounter(WINDOW_SIZE); |
Jonathan Hart | 233a18a | 2015-03-02 17:24:58 -0800 | [diff] [blame] | 115 | |
Jonathan Hart | ca335e9 | 2015-03-05 10:34:32 -0800 | [diff] [blame] | 116 | private final boolean persistent; |
| 117 | private final PersistentStore<K, V> persistentStore; |
| 118 | |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 119 | /** |
| 120 | * Creates a new eventually consistent map shared amongst multiple instances. |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 121 | * <p> |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 122 | * See {@link org.onosproject.store.service.EventuallyConsistentMapBuilder} |
| 123 | * for more description of the parameters expected by the map. |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 124 | * </p> |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 125 | * |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 126 | * @param mapName a String identifier for the map. |
| 127 | * @param clusterService the cluster service |
| 128 | * @param clusterCommunicator the cluster communications service |
| 129 | * @param serializerBuilder a Kryo namespace builder that can serialize |
| 130 | * both K and V |
Madan Jampani | bcf1a48 | 2015-06-24 19:05:56 -0700 | [diff] [blame] | 131 | * @param timestampProvider provider of timestamps for K and V |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 132 | * @param peerUpdateFunction function that provides a set of nodes to immediately |
| 133 | * update to when there writes to the map |
| 134 | * @param eventExecutor executor to use for processing incoming |
| 135 | * events from peers |
| 136 | * @param communicationExecutor executor to use for sending events to peers |
| 137 | * @param backgroundExecutor executor to use for background anti-entropy |
| 138 | * tasks |
| 139 | * @param tombstonesDisabled true if this map should not maintain |
| 140 | * tombstones |
| 141 | * @param antiEntropyPeriod period that the anti-entropy task should run |
Jonathan Hart | ca335e9 | 2015-03-05 10:34:32 -0800 | [diff] [blame] | 142 | * @param antiEntropyTimeUnit time unit for anti-entropy period |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 143 | * @param convergeFaster make anti-entropy try to converge faster |
Jonathan Hart | ca335e9 | 2015-03-05 10:34:32 -0800 | [diff] [blame] | 144 | * @param persistent persist data to disk |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 145 | */ |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 146 | EventuallyConsistentMapImpl(String mapName, |
| 147 | ClusterService clusterService, |
| 148 | ClusterCommunicationService clusterCommunicator, |
| 149 | KryoNamespace.Builder serializerBuilder, |
Madan Jampani | bcf1a48 | 2015-06-24 19:05:56 -0700 | [diff] [blame] | 150 | BiFunction<K, V, Timestamp> timestampProvider, |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 151 | BiFunction<K, V, Collection<NodeId>> peerUpdateFunction, |
| 152 | ExecutorService eventExecutor, |
| 153 | ExecutorService communicationExecutor, |
| 154 | ScheduledExecutorService backgroundExecutor, |
| 155 | boolean tombstonesDisabled, |
| 156 | long antiEntropyPeriod, |
| 157 | TimeUnit antiEntropyTimeUnit, |
Jonathan Hart | ca335e9 | 2015-03-05 10:34:32 -0800 | [diff] [blame] | 158 | boolean convergeFaster, |
| 159 | boolean persistent) { |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 160 | items = Maps.newConcurrentMap(); |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 161 | senderPending = Maps.newConcurrentMap(); |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 162 | destroyedMessage = mapName + ERROR_DESTROYED; |
Madan Jampani | 2872628 | 2015-02-19 11:40:23 -0800 | [diff] [blame] | 163 | |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 164 | this.clusterService = clusterService; |
| 165 | this.clusterCommunicator = clusterCommunicator; |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 166 | this.localNodeId = clusterService.getLocalNode().id(); |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 167 | |
| 168 | this.serializer = createSerializer(serializerBuilder); |
| 169 | |
Madan Jampani | bcf1a48 | 2015-06-24 19:05:56 -0700 | [diff] [blame] | 170 | this.timestampProvider = timestampProvider; |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 171 | |
| 172 | if (peerUpdateFunction != null) { |
| 173 | this.peerUpdateFunction = peerUpdateFunction; |
| 174 | } else { |
| 175 | this.peerUpdateFunction = (key, value) -> clusterService.getNodes().stream() |
| 176 | .map(ControllerNode::id) |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 177 | .filter(nodeId -> !nodeId.equals(localNodeId)) |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 178 | .collect(Collectors.toList()); |
| 179 | } |
| 180 | |
| 181 | if (eventExecutor != null) { |
| 182 | this.executor = eventExecutor; |
| 183 | } else { |
| 184 | // should be a normal executor; it's used for receiving messages |
| 185 | this.executor = |
| 186 | Executors.newFixedThreadPool(8, groupedThreads("onos/ecm", mapName + "-fg-%d")); |
| 187 | } |
| 188 | |
| 189 | if (communicationExecutor != null) { |
| 190 | this.communicationExecutor = communicationExecutor; |
| 191 | } else { |
| 192 | // sending executor; should be capped |
| 193 | //TODO this probably doesn't need to be bounded anymore |
| 194 | this.communicationExecutor = |
| 195 | newFixedThreadPool(8, groupedThreads("onos/ecm", mapName + "-publish-%d")); |
| 196 | } |
| 197 | |
Jonathan Hart | ca335e9 | 2015-03-05 10:34:32 -0800 | [diff] [blame] | 198 | this.persistent = persistent; |
| 199 | |
| 200 | if (this.persistent) { |
| 201 | String dataDirectory = System.getProperty("karaf.data", "./data"); |
| 202 | String filename = dataDirectory + "/" + "mapdb-ecm-" + mapName; |
| 203 | |
| 204 | ExecutorService dbExecutor = |
| 205 | newFixedThreadPool(1, groupedThreads("onos/ecm", mapName + "-dbwriter")); |
| 206 | |
| 207 | persistentStore = new MapDbPersistentStore<>(filename, dbExecutor, serializer); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 208 | persistentStore.readInto(items); |
Jonathan Hart | ca335e9 | 2015-03-05 10:34:32 -0800 | [diff] [blame] | 209 | } else { |
| 210 | this.persistentStore = null; |
| 211 | } |
| 212 | |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 213 | if (backgroundExecutor != null) { |
| 214 | this.backgroundExecutor = backgroundExecutor; |
| 215 | } else { |
| 216 | this.backgroundExecutor = |
| 217 | newSingleThreadScheduledExecutor(groupedThreads("onos/ecm", mapName + "-bg-%d")); |
| 218 | } |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 219 | |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 220 | // start anti-entropy thread |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 221 | this.backgroundExecutor.scheduleAtFixedRate(this::sendAdvertisement, |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 222 | initialDelaySec, antiEntropyPeriod, |
| 223 | antiEntropyTimeUnit); |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 224 | |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 225 | updateMessageSubject = new MessageSubject("ecm-" + mapName + "-update"); |
| 226 | clusterCommunicator.addSubscriber(updateMessageSubject, |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 227 | serializer::decode, |
| 228 | this::processUpdates, |
| 229 | this.executor); |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 230 | |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 231 | antiEntropyAdvertisementSubject = new MessageSubject("ecm-" + mapName + "-anti-entropy"); |
| 232 | clusterCommunicator.addSubscriber(antiEntropyAdvertisementSubject, |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 233 | serializer::decode, |
| 234 | this::handleAntiEntropyAdvertisement, |
| 235 | this.backgroundExecutor); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 236 | |
Jonathan Hart | 6ec029a | 2015-03-24 17:12:35 -0700 | [diff] [blame] | 237 | this.tombstonesDisabled = tombstonesDisabled; |
| 238 | this.lightweightAntiEntropy = !convergeFaster; |
Madan Jampani | e135628 | 2015-03-10 19:05:36 -0700 | [diff] [blame] | 239 | } |
| 240 | |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 241 | private KryoSerializer createSerializer(KryoNamespace.Builder builder) { |
| 242 | return new KryoSerializer() { |
| 243 | @Override |
| 244 | protected void setupKryoPool() { |
| 245 | // Add the map's internal helper classes to the user-supplied serializer |
| 246 | serializerPool = builder |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 247 | .register(KryoNamespaces.BASIC) |
Madan Jampani | db5d06a | 2015-06-30 11:16:48 -0700 | [diff] [blame] | 248 | .nextId(KryoNamespaces.BEGIN_USER_CUSTOM_ID) |
Madan Jampani | 3e033bd | 2015-04-08 13:03:49 -0700 | [diff] [blame] | 249 | .register(LogicalTimestamp.class) |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 250 | .register(WallClockTimestamp.class) |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 251 | .register(AntiEntropyAdvertisement.class) |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 252 | .register(UpdateEntry.class) |
| 253 | .register(MapValue.class) |
| 254 | .register(MapValue.Digest.class) |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 255 | .build(); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 256 | } |
| 257 | }; |
| 258 | } |
| 259 | |
| 260 | @Override |
| 261 | public int size() { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 262 | checkState(!destroyed, destroyedMessage); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 263 | // TODO: Maintain a separate counter for tracking live elements in map. |
| 264 | return Maps.filterValues(items, MapValue::isAlive).size(); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | @Override |
| 268 | public boolean isEmpty() { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 269 | checkState(!destroyed, destroyedMessage); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 270 | return size() == 0; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | @Override |
| 274 | public boolean containsKey(K key) { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 275 | checkState(!destroyed, destroyedMessage); |
Jonathan Hart | 4f397e8 | 2015-02-04 09:10:41 -0800 | [diff] [blame] | 276 | checkNotNull(key, ERROR_NULL_KEY); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 277 | return get(key) != null; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | @Override |
| 281 | public boolean containsValue(V value) { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 282 | checkState(!destroyed, destroyedMessage); |
Jonathan Hart | 4f397e8 | 2015-02-04 09:10:41 -0800 | [diff] [blame] | 283 | checkNotNull(value, ERROR_NULL_VALUE); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 284 | return items.values() |
| 285 | .stream() |
| 286 | .filter(MapValue::isAlive) |
| 287 | .anyMatch(v -> v.get().equals(value)); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 288 | } |
| 289 | |
| 290 | @Override |
| 291 | public V get(K key) { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 292 | checkState(!destroyed, destroyedMessage); |
Jonathan Hart | 4f397e8 | 2015-02-04 09:10:41 -0800 | [diff] [blame] | 293 | checkNotNull(key, ERROR_NULL_KEY); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 294 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 295 | MapValue<V> value = items.get(key); |
| 296 | return (value == null || value.isTombstone()) ? null : value.get(); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | @Override |
| 300 | public void put(K key, V value) { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 301 | checkState(!destroyed, destroyedMessage); |
Jonathan Hart | 4f397e8 | 2015-02-04 09:10:41 -0800 | [diff] [blame] | 302 | checkNotNull(key, ERROR_NULL_KEY); |
| 303 | checkNotNull(value, ERROR_NULL_VALUE); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 304 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 305 | MapValue<V> newValue = new MapValue<>(value, timestampProvider.apply(key, value)); |
| 306 | if (updateInternal(key, newValue)) { |
| 307 | notifyPeers(new UpdateEntry<>(key, newValue), peerUpdateFunction.apply(key, value)); |
| 308 | notifyListeners(new EventuallyConsistentMapEvent<>(PUT, key, value)); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 309 | } |
| 310 | } |
| 311 | |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 312 | @Override |
Madan Jampani | 43e9c9c | 2015-06-26 14:16:46 -0700 | [diff] [blame] | 313 | public V remove(K key) { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 314 | checkState(!destroyed, destroyedMessage); |
Jonathan Hart | 4f397e8 | 2015-02-04 09:10:41 -0800 | [diff] [blame] | 315 | checkNotNull(key, ERROR_NULL_KEY); |
Madan Jampani | 5300bb8 | 2015-07-02 10:16:16 -0700 | [diff] [blame] | 316 | // TODO prevent calls here if value is important for timestamp |
Madan Jampani | 43f3795 | 2015-07-02 12:54:08 -0700 | [diff] [blame] | 317 | MapValue<V> tombstone = MapValue.tombstone(timestampProvider.apply(key, null)); |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 318 | MapValue<V> previousValue = removeInternal(key, Optional.empty(), tombstone); |
Madan Jampani | a0ac487 | 2015-07-02 11:23:49 -0700 | [diff] [blame] | 319 | if (previousValue != null) { |
| 320 | notifyPeers(new UpdateEntry<>(key, tombstone), peerUpdateFunction.apply(key, previousValue.get())); |
| 321 | if (previousValue.isAlive()) { |
| 322 | notifyListeners(new EventuallyConsistentMapEvent<>(REMOVE, key, previousValue.get())); |
| 323 | } |
| 324 | } |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 325 | return previousValue != null ? previousValue.get() : null; |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | @Override |
Jonathan Hart | 5ec32ba | 2015-02-05 13:33:58 -0800 | [diff] [blame] | 329 | public void remove(K key, V value) { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 330 | checkState(!destroyed, destroyedMessage); |
Jonathan Hart | 5ec32ba | 2015-02-05 13:33:58 -0800 | [diff] [blame] | 331 | checkNotNull(key, ERROR_NULL_KEY); |
| 332 | checkNotNull(value, ERROR_NULL_VALUE); |
Madan Jampani | 43f3795 | 2015-07-02 12:54:08 -0700 | [diff] [blame] | 333 | MapValue<V> tombstone = MapValue.tombstone(timestampProvider.apply(key, value)); |
Madan Jampani | a0ac487 | 2015-07-02 11:23:49 -0700 | [diff] [blame] | 334 | MapValue<V> previousValue = removeInternal(key, Optional.of(value), tombstone); |
| 335 | if (previousValue != null) { |
| 336 | notifyPeers(new UpdateEntry<>(key, tombstone), peerUpdateFunction.apply(key, previousValue.get())); |
| 337 | if (previousValue.isAlive()) { |
| 338 | notifyListeners(new EventuallyConsistentMapEvent<>(REMOVE, key, previousValue.get())); |
| 339 | } |
| 340 | } |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 341 | } |
Jonathan Hart | 5ec32ba | 2015-02-05 13:33:58 -0800 | [diff] [blame] | 342 | |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 343 | private MapValue<V> removeInternal(K key, Optional<V> value, MapValue<V> tombstone) { |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 344 | checkState(!destroyed, destroyedMessage); |
| 345 | checkNotNull(key, ERROR_NULL_KEY); |
| 346 | checkNotNull(value, ERROR_NULL_VALUE); |
Jonathan Hart | 5ec32ba | 2015-02-05 13:33:58 -0800 | [diff] [blame] | 347 | |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 348 | checkState(tombstone.isTombstone()); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 349 | AtomicBoolean updated = new AtomicBoolean(false); |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 350 | AtomicReference<MapValue<V>> previousValue = new AtomicReference<>(); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 351 | items.compute(key, (k, existing) -> { |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 352 | boolean valueMatches = true; |
| 353 | if (value.isPresent() && existing != null && existing.isAlive()) { |
| 354 | valueMatches = Objects.equals(value.get(), existing.get()); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 355 | } |
Brian O'Connor | 6325dad | 2015-07-07 15:36:29 -0700 | [diff] [blame^] | 356 | if (existing == null) { |
| 357 | log.debug("ECMap Remove: Existing value for key {} is already null", k); |
| 358 | } |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 359 | updated.set(valueMatches && (existing == null || tombstone.isNewerThan(existing))); |
| 360 | if (updated.get()) { |
| 361 | previousValue.set(existing); |
| 362 | } |
| 363 | return updated.get() ? tombstone : existing; |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 364 | }); |
| 365 | if (updated.get()) { |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 366 | if (persistent) { |
| 367 | persistentStore.update(key, tombstone); |
| 368 | } |
Jonathan Hart | 5ec32ba | 2015-02-05 13:33:58 -0800 | [diff] [blame] | 369 | } |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 370 | return previousValue.get(); |
Jonathan Hart | 5ec32ba | 2015-02-05 13:33:58 -0800 | [diff] [blame] | 371 | } |
| 372 | |
| 373 | @Override |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 374 | public void putAll(Map<? extends K, ? extends V> m) { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 375 | checkState(!destroyed, destroyedMessage); |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 376 | m.forEach(this::put); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 377 | } |
| 378 | |
| 379 | @Override |
| 380 | public void clear() { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 381 | checkState(!destroyed, destroyedMessage); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 382 | Maps.filterValues(items, MapValue::isAlive) |
| 383 | .forEach((k, v) -> remove(k)); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 384 | } |
| 385 | |
| 386 | @Override |
| 387 | public Set<K> keySet() { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 388 | checkState(!destroyed, destroyedMessage); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 389 | return Maps.filterValues(items, MapValue::isAlive) |
| 390 | .keySet(); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | @Override |
| 394 | public Collection<V> values() { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 395 | checkState(!destroyed, destroyedMessage); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 396 | return Maps.filterValues(items, MapValue::isAlive) |
| 397 | .values() |
| 398 | .stream() |
| 399 | .map(MapValue::get) |
| 400 | .collect(Collectors.toList()); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | @Override |
| 404 | public Set<Map.Entry<K, V>> entrySet() { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 405 | checkState(!destroyed, destroyedMessage); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 406 | return Maps.filterValues(items, MapValue::isAlive) |
| 407 | .entrySet() |
| 408 | .stream() |
| 409 | .map(e -> Pair.of(e.getKey(), e.getValue().get())) |
| 410 | .collect(Collectors.toSet()); |
| 411 | } |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 412 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 413 | /** |
| 414 | * Returns true if newValue was accepted i.e. map is updated. |
| 415 | * @param key key |
| 416 | * @param newValue proposed new value |
| 417 | * @return true if update happened; false if map already contains a more recent value for the key |
| 418 | */ |
| 419 | private boolean updateInternal(K key, MapValue<V> newValue) { |
| 420 | AtomicBoolean updated = new AtomicBoolean(false); |
| 421 | items.compute(key, (k, existing) -> { |
| 422 | if (existing == null || newValue.isNewerThan(existing)) { |
| 423 | updated.set(true); |
| 424 | if (newValue.isTombstone()) { |
| 425 | return tombstonesDisabled ? null : newValue; |
| 426 | } |
| 427 | return newValue; |
| 428 | } |
| 429 | return existing; |
| 430 | }); |
| 431 | if (updated.get() && persistent) { |
| 432 | persistentStore.update(key, newValue); |
| 433 | } |
| 434 | return updated.get(); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 435 | } |
| 436 | |
| 437 | @Override |
Jonathan Hart | 539a646 | 2015-01-27 17:05:43 -0800 | [diff] [blame] | 438 | public void addListener(EventuallyConsistentMapListener<K, V> listener) { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 439 | checkState(!destroyed, destroyedMessage); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 440 | |
| 441 | listeners.add(checkNotNull(listener)); |
| 442 | } |
| 443 | |
| 444 | @Override |
Jonathan Hart | 539a646 | 2015-01-27 17:05:43 -0800 | [diff] [blame] | 445 | public void removeListener(EventuallyConsistentMapListener<K, V> listener) { |
Thomas Vachuska | a132e3a | 2015-02-21 01:53:14 -0800 | [diff] [blame] | 446 | checkState(!destroyed, destroyedMessage); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 447 | |
| 448 | listeners.remove(checkNotNull(listener)); |
| 449 | } |
| 450 | |
| 451 | @Override |
| 452 | public void destroy() { |
| 453 | destroyed = true; |
| 454 | |
| 455 | executor.shutdown(); |
| 456 | backgroundExecutor.shutdown(); |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 457 | communicationExecutor.shutdown(); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 458 | |
Jonathan Hart | 584d2f3 | 2015-01-27 19:46:14 -0800 | [diff] [blame] | 459 | listeners.clear(); |
| 460 | |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 461 | clusterCommunicator.removeSubscriber(updateMessageSubject); |
Jonathan Hart | 584d2f3 | 2015-01-27 19:46:14 -0800 | [diff] [blame] | 462 | clusterCommunicator.removeSubscriber(antiEntropyAdvertisementSubject); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 463 | } |
| 464 | |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 465 | private void notifyListeners(EventuallyConsistentMapEvent<K, V> event) { |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 466 | listeners.forEach(listener -> listener.event(event)); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 467 | } |
| 468 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 469 | private void notifyPeers(UpdateEntry<K, V> event, Collection<NodeId> peers) { |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 470 | queueUpdate(event, peers); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 471 | } |
| 472 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 473 | private void queueUpdate(UpdateEntry<K, V> event, Collection<NodeId> peers) { |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 474 | if (peers == null) { |
| 475 | // we have no friends :( |
| 476 | return; |
| 477 | } |
| 478 | peers.forEach(node -> |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 479 | senderPending.computeIfAbsent(node, unusedKey -> new EventAccumulator(node)).add(event) |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 480 | ); |
| 481 | } |
| 482 | |
Jonathan Hart | 233a18a | 2015-03-02 17:24:58 -0800 | [diff] [blame] | 483 | private boolean underHighLoad() { |
| 484 | return counter.get(LOAD_WINDOW) > HIGH_LOAD_THRESHOLD; |
| 485 | } |
| 486 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 487 | private void sendAdvertisement() { |
| 488 | try { |
Thomas Vachuska | 152f9fd | 2015-04-02 16:28:13 -0700 | [diff] [blame] | 489 | if (underHighLoad() || destroyed) { |
Jonathan Hart | 233a18a | 2015-03-02 17:24:58 -0800 | [diff] [blame] | 490 | return; |
| 491 | } |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 492 | pickRandomActivePeer().ifPresent(this::sendAdvertisementToPeer); |
| 493 | } catch (Exception e) { |
| 494 | // Catch all exceptions to avoid scheduled task being suppressed. |
| 495 | log.error("Exception thrown while sending advertisement", e); |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 496 | } |
| 497 | } |
| 498 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 499 | private Optional<NodeId> pickRandomActivePeer() { |
| 500 | List<NodeId> activePeers = clusterService.getNodes() |
| 501 | .stream() |
| 502 | .filter(node -> !localNodeId.equals(node)) |
| 503 | .map(ControllerNode::id) |
| 504 | .filter(id -> clusterService.getState(id) == ControllerNode.State.ACTIVE) |
| 505 | .collect(Collectors.toList()); |
| 506 | Collections.shuffle(activePeers); |
| 507 | return activePeers.isEmpty() ? Optional.empty() : Optional.of(activePeers.get(0)); |
| 508 | } |
| 509 | |
| 510 | private void sendAdvertisementToPeer(NodeId peer) { |
| 511 | clusterCommunicator.unicast(createAdvertisement(), |
| 512 | antiEntropyAdvertisementSubject, |
| 513 | serializer::encode, |
| 514 | peer) |
| 515 | .whenComplete((result, error) -> { |
| 516 | if (error != null) { |
Madan Jampani | a0ac487 | 2015-07-02 11:23:49 -0700 | [diff] [blame] | 517 | log.debug("Failed to send anti-entropy advertisement to {}", peer, error); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 518 | } |
| 519 | }); |
| 520 | } |
| 521 | |
| 522 | |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 523 | private AntiEntropyAdvertisement<K> createAdvertisement() { |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 524 | return new AntiEntropyAdvertisement<K>(localNodeId, Maps.transformValues(items, MapValue::digest)); |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 525 | } |
| 526 | |
| 527 | private void handleAntiEntropyAdvertisement(AntiEntropyAdvertisement<K> ad) { |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 528 | if (destroyed || underHighLoad()) { |
| 529 | return; |
| 530 | } |
| 531 | try { |
| 532 | antiEntropyCheckLocalItems(ad).forEach(this::notifyListeners); |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 533 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 534 | if (!lightweightAntiEntropy) { |
| 535 | Set<K> missingKeys = Sets.difference(items.keySet(), ad.digest().keySet()); |
| 536 | // if remote ad has something unknown, actively sync |
| 537 | if (missingKeys.size() > 0) { |
Jonathan Hart | f893be8 | 2015-02-24 17:35:51 -0800 | [diff] [blame] | 538 | // Send the advertisement back if this peer is out-of-sync |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 539 | // TODO: Send ad for missing keys and for entries that are stale |
| 540 | sendAdvertisementToPeer(ad.sender()); |
Jonathan Hart | f893be8 | 2015-02-24 17:35:51 -0800 | [diff] [blame] | 541 | } |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 542 | } |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 543 | } catch (Exception e) { |
| 544 | log.warn("Error handling anti-entropy advertisement", e); |
HIGUCHI Yuta | 00c3f57 | 2015-02-25 07:33:50 -0800 | [diff] [blame] | 545 | } |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | /** |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 549 | * Processes anti-entropy ad from peer by taking following actions: |
| 550 | * 1. If peer has an old entry, updates peer. |
| 551 | * 2. If peer indicates an entry is removed and has a more recent |
| 552 | * timestamp than the local entry, update local state. |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 553 | */ |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 554 | private List<EventuallyConsistentMapEvent<K, V>> antiEntropyCheckLocalItems( |
| 555 | AntiEntropyAdvertisement<K> ad) { |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 556 | final List<EventuallyConsistentMapEvent<K, V>> externalEvents = Lists.newLinkedList(); |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 557 | final NodeId sender = ad.sender(); |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 558 | items.forEach((key, localValue) -> { |
| 559 | MapValue.Digest remoteValueDigest = ad.digest().get(key); |
| 560 | if (remoteValueDigest == null || localValue.isNewerThan(remoteValueDigest.timestamp())) { |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 561 | // local value is more recent, push to sender |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 562 | queueUpdate(new UpdateEntry<>(key, localValue), ImmutableList.of(sender)); |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 563 | } |
| 564 | if (remoteValueDigest != null && remoteValueDigest.isTombstone()) { |
| 565 | MapValue<V> previousValue = removeInternal(key, |
| 566 | Optional.empty(), |
Madan Jampani | 43f3795 | 2015-07-02 12:54:08 -0700 | [diff] [blame] | 567 | MapValue.tombstone(remoteValueDigest.timestamp())); |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 568 | if (previousValue != null && previousValue.isAlive()) { |
| 569 | externalEvents.add(new EventuallyConsistentMapEvent<>(REMOVE, key, previousValue.get())); |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 570 | } |
| 571 | } |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 572 | }); |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 573 | return externalEvents; |
| 574 | } |
| 575 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 576 | private void processUpdates(Collection<UpdateEntry<K, V>> updates) { |
| 577 | if (destroyed) { |
| 578 | return; |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 579 | } |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 580 | updates.forEach(update -> { |
| 581 | final K key = update.key(); |
| 582 | final MapValue<V> value = update.value(); |
Madan Jampani | d13f3b8 | 2015-07-01 17:37:50 -0700 | [diff] [blame] | 583 | if (value.isTombstone()) { |
| 584 | MapValue<V> previousValue = removeInternal(key, Optional.empty(), value); |
| 585 | if (previousValue != null && previousValue.get() != null) { |
| 586 | notifyListeners(new EventuallyConsistentMapEvent<>(REMOVE, key, previousValue.get())); |
| 587 | } |
| 588 | } else if (updateInternal(key, value)) { |
| 589 | notifyListeners(new EventuallyConsistentMapEvent<>(PUT, key, value.get())); |
Jonathan Hart | aaa5657 | 2015-01-28 21:56:35 -0800 | [diff] [blame] | 590 | } |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 591 | }); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 592 | } |
| 593 | |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 594 | // TODO pull this into the class if this gets pulled out... |
| 595 | private static final int DEFAULT_MAX_EVENTS = 1000; |
| 596 | private static final int DEFAULT_MAX_IDLE_MS = 10; |
| 597 | private static final int DEFAULT_MAX_BATCH_MS = 50; |
| 598 | private static final Timer TIMER = new Timer("onos-ecm-sender-events"); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 599 | |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 600 | private final class EventAccumulator extends AbstractAccumulator<UpdateEntry<K, V>> { |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 601 | |
| 602 | private final NodeId peer; |
| 603 | |
| 604 | private EventAccumulator(NodeId peer) { |
| 605 | super(TIMER, DEFAULT_MAX_EVENTS, DEFAULT_MAX_BATCH_MS, DEFAULT_MAX_IDLE_MS); |
| 606 | this.peer = peer; |
| 607 | } |
| 608 | |
| 609 | @Override |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 610 | public void processItems(List<UpdateEntry<K, V>> items) { |
| 611 | Map<K, UpdateEntry<K, V>> map = Maps.newHashMap(); |
| 612 | items.forEach(item -> map.compute(item.key(), (key, existing) -> |
| 613 | existing == null || item.compareTo(existing) > 0 ? item : existing)); |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 614 | communicationExecutor.submit(() -> { |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 615 | clusterCommunicator.unicast(ImmutableList.copyOf(map.values()), |
Madan Jampani | 175e8fd | 2015-05-20 14:10:45 -0700 | [diff] [blame] | 616 | updateMessageSubject, |
| 617 | serializer::encode, |
| 618 | peer) |
| 619 | .whenComplete((result, error) -> { |
| 620 | if (error != null) { |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 621 | log.debug("Failed to send to {}", peer, error); |
Madan Jampani | 175e8fd | 2015-05-20 14:10:45 -0700 | [diff] [blame] | 622 | } |
| 623 | }); |
Brian O'Connor | eeaea2c | 2015-03-05 16:24:34 -0800 | [diff] [blame] | 624 | }); |
Jonathan Hart | db3af89 | 2015-01-26 13:19:07 -0800 | [diff] [blame] | 625 | } |
| 626 | } |
Madan Jampani | 3d76c94 | 2015-06-29 23:37:10 -0700 | [diff] [blame] | 627 | } |