Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [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 | */ |
| 16 | |
| 17 | package org.onosproject.store.consistent.impl; |
| 18 | |
| 19 | import static com.google.common.base.Preconditions.*; |
Madan Jampani | 50589ac | 2015-06-08 11:38:46 -0700 | [diff] [blame] | 20 | import static org.slf4j.LoggerFactory.getLogger; |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 21 | |
| 22 | import java.util.Collection; |
| 23 | import java.util.Map; |
| 24 | import java.util.Map.Entry; |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 25 | import java.util.Objects; |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 26 | import java.util.concurrent.CompletableFuture; |
Madan Jampani | 50589ac | 2015-06-08 11:38:46 -0700 | [diff] [blame] | 27 | import java.util.concurrent.CopyOnWriteArraySet; |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 28 | import java.util.concurrent.atomic.AtomicReference; |
| 29 | import java.util.function.BiFunction; |
Madan Jampani | 50589ac | 2015-06-08 11:38:46 -0700 | [diff] [blame] | 30 | import java.util.function.Consumer; |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 31 | import java.util.function.Function; |
| 32 | import java.util.function.Predicate; |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 33 | import java.util.stream.Collectors; |
| 34 | import java.util.Set; |
| 35 | |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 36 | import org.onlab.util.HexString; |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 37 | import org.onlab.util.Tools; |
Madan Jampani | e8af1cc | 2015-06-23 14:23:31 -0700 | [diff] [blame] | 38 | import org.onosproject.core.ApplicationId; |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 39 | import org.onosproject.store.service.AsyncConsistentMap; |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 40 | import org.onosproject.store.service.ConsistentMapException; |
Madan Jampani | 50589ac | 2015-06-08 11:38:46 -0700 | [diff] [blame] | 41 | import org.onosproject.store.service.MapEvent; |
| 42 | import org.onosproject.store.service.MapEventListener; |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 43 | import org.onosproject.store.service.Serializer; |
| 44 | import org.onosproject.store.service.Versioned; |
Madan Jampani | 50589ac | 2015-06-08 11:38:46 -0700 | [diff] [blame] | 45 | import org.slf4j.Logger; |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 46 | |
| 47 | import com.google.common.cache.CacheBuilder; |
| 48 | import com.google.common.cache.CacheLoader; |
| 49 | import com.google.common.cache.LoadingCache; |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 50 | import com.google.common.collect.Maps; |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 51 | |
| 52 | /** |
| 53 | * AsyncConsistentMap implementation that is backed by a Raft consensus |
| 54 | * based database. |
| 55 | * |
| 56 | * @param <K> type of key. |
| 57 | * @param <V> type of value. |
| 58 | */ |
| 59 | public class DefaultAsyncConsistentMap<K, V> implements AsyncConsistentMap<K, V> { |
| 60 | |
| 61 | private final String name; |
Madan Jampani | e8af1cc | 2015-06-23 14:23:31 -0700 | [diff] [blame] | 62 | private final ApplicationId applicationId; |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 63 | private final Database database; |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 64 | private final Serializer serializer; |
Madan Jampani | 02b7fb8 | 2015-05-01 13:01:20 -0700 | [diff] [blame] | 65 | private final boolean readOnly; |
Madan Jampani | e8af1cc | 2015-06-23 14:23:31 -0700 | [diff] [blame] | 66 | private final boolean purgeOnUninstall; |
Madan Jampani | 50589ac | 2015-06-08 11:38:46 -0700 | [diff] [blame] | 67 | private final Consumer<MapEvent<K, V>> eventPublisher; |
| 68 | |
| 69 | private final Set<MapEventListener<K, V>> listeners = new CopyOnWriteArraySet<>(); |
| 70 | |
| 71 | private final Logger log = getLogger(getClass()); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 72 | |
| 73 | private static final String ERROR_NULL_KEY = "Key cannot be null"; |
| 74 | private static final String ERROR_NULL_VALUE = "Null values are not allowed"; |
| 75 | |
| 76 | private final LoadingCache<K, String> keyCache = CacheBuilder.newBuilder() |
| 77 | .softValues() |
| 78 | .build(new CacheLoader<K, String>() { |
| 79 | |
| 80 | @Override |
| 81 | public String load(K key) { |
| 82 | return HexString.toHexString(serializer.encode(key)); |
| 83 | } |
| 84 | }); |
| 85 | |
| 86 | protected K dK(String key) { |
| 87 | return serializer.decode(HexString.fromHexString(key)); |
| 88 | } |
| 89 | |
| 90 | public DefaultAsyncConsistentMap(String name, |
Madan Jampani | e8af1cc | 2015-06-23 14:23:31 -0700 | [diff] [blame] | 91 | ApplicationId applicationId, |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 92 | Database database, |
Madan Jampani | 02b7fb8 | 2015-05-01 13:01:20 -0700 | [diff] [blame] | 93 | Serializer serializer, |
Madan Jampani | 50589ac | 2015-06-08 11:38:46 -0700 | [diff] [blame] | 94 | boolean readOnly, |
Madan Jampani | e8af1cc | 2015-06-23 14:23:31 -0700 | [diff] [blame] | 95 | boolean purgeOnUninstall, |
Madan Jampani | 50589ac | 2015-06-08 11:38:46 -0700 | [diff] [blame] | 96 | Consumer<MapEvent<K, V>> eventPublisher) { |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 97 | this.name = checkNotNull(name, "map name cannot be null"); |
Madan Jampani | e8af1cc | 2015-06-23 14:23:31 -0700 | [diff] [blame] | 98 | this.applicationId = applicationId; |
Madan Jampani | f1b8e17 | 2015-03-23 11:42:02 -0700 | [diff] [blame] | 99 | this.database = checkNotNull(database, "database cannot be null"); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 100 | this.serializer = checkNotNull(serializer, "serializer cannot be null"); |
Madan Jampani | 02b7fb8 | 2015-05-01 13:01:20 -0700 | [diff] [blame] | 101 | this.readOnly = readOnly; |
Madan Jampani | e8af1cc | 2015-06-23 14:23:31 -0700 | [diff] [blame] | 102 | this.purgeOnUninstall = purgeOnUninstall; |
Madan Jampani | 50589ac | 2015-06-08 11:38:46 -0700 | [diff] [blame] | 103 | this.eventPublisher = eventPublisher; |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Returns this map name. |
| 108 | * @return map name |
| 109 | */ |
| 110 | public String name() { |
| 111 | return name; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Returns the serializer for map entries. |
| 116 | * @return map entry serializer |
| 117 | */ |
| 118 | public Serializer serializer() { |
| 119 | return serializer; |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 120 | } |
| 121 | |
Madan Jampani | e8af1cc | 2015-06-23 14:23:31 -0700 | [diff] [blame] | 122 | /** |
| 123 | * Returns the applicationId owning this map. |
| 124 | * @return application Id |
| 125 | */ |
| 126 | public ApplicationId applicationId() { |
| 127 | return applicationId; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Returns whether the map entries should be purged when the application |
| 132 | * owning it is uninstalled. |
| 133 | * @return true is map needs to cleared on app uninstall; false otherwise |
| 134 | */ |
| 135 | public boolean purgeOnUninstall() { |
| 136 | return purgeOnUninstall; |
| 137 | } |
| 138 | |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 139 | @Override |
| 140 | public CompletableFuture<Integer> size() { |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 141 | return database.mapSize(name); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | @Override |
| 145 | public CompletableFuture<Boolean> isEmpty() { |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 146 | return database.mapIsEmpty(name); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | @Override |
| 150 | public CompletableFuture<Boolean> containsKey(K key) { |
| 151 | checkNotNull(key, ERROR_NULL_KEY); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 152 | return database.mapContainsKey(name, keyCache.getUnchecked(key)); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | @Override |
| 156 | public CompletableFuture<Boolean> containsValue(V value) { |
| 157 | checkNotNull(value, ERROR_NULL_VALUE); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 158 | return database.mapContainsValue(name, serializer.encode(value)); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | @Override |
| 162 | public CompletableFuture<Versioned<V>> get(K key) { |
| 163 | checkNotNull(key, ERROR_NULL_KEY); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 164 | return database.mapGet(name, keyCache.getUnchecked(key)) |
| 165 | .thenApply(v -> v != null ? v.map(serializer::decode) : null); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | @Override |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 169 | public CompletableFuture<Versioned<V>> computeIfAbsent(K key, |
| 170 | Function<? super K, ? extends V> mappingFunction) { |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 171 | checkNotNull(key, ERROR_NULL_KEY); |
| 172 | checkNotNull(mappingFunction, "Mapping function cannot be null"); |
| 173 | return updateAndGet(key, Match.ifNull(), Match.any(), mappingFunction.apply(key)).thenApply(v -> v.newValue()); |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | @Override |
| 177 | public CompletableFuture<Versioned<V>> computeIfPresent(K key, |
| 178 | BiFunction<? super K, ? super V, ? extends V> remappingFunction) { |
| 179 | return computeIf(key, Objects::nonNull, remappingFunction); |
| 180 | } |
| 181 | |
| 182 | @Override |
| 183 | public CompletableFuture<Versioned<V>> compute(K key, |
| 184 | BiFunction<? super K, ? super V, ? extends V> remappingFunction) { |
| 185 | return computeIf(key, v -> true, remappingFunction); |
| 186 | } |
| 187 | |
| 188 | @Override |
| 189 | public CompletableFuture<Versioned<V>> computeIf(K key, |
| 190 | Predicate<? super V> condition, |
| 191 | BiFunction<? super K, ? super V, ? extends V> remappingFunction) { |
| 192 | checkNotNull(key, ERROR_NULL_KEY); |
| 193 | checkNotNull(condition, "predicate function cannot be null"); |
| 194 | checkNotNull(remappingFunction, "Remapping function cannot be null"); |
| 195 | return get(key).thenCompose(r1 -> { |
| 196 | V existingValue = r1 == null ? null : r1.value(); |
| 197 | // if the condition evaluates to false, return existing value. |
| 198 | if (!condition.test(existingValue)) { |
| 199 | return CompletableFuture.completedFuture(r1); |
| 200 | } |
| 201 | |
| 202 | AtomicReference<V> computedValue = new AtomicReference<>(); |
| 203 | // if remappingFunction throws an exception, return the exception. |
| 204 | try { |
| 205 | computedValue.set(remappingFunction.apply(key, existingValue)); |
| 206 | } catch (Exception e) { |
| 207 | return Tools.exceptionalFuture(e); |
| 208 | } |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 209 | if (computedValue.get() == null && r1 == null) { |
| 210 | return CompletableFuture.completedFuture(null); |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 211 | } |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 212 | Match<V> valueMatcher = r1 == null ? Match.ifNull() : Match.any(); |
| 213 | Match<Long> versionMatcher = r1 == null ? Match.any() : Match.ifValue(r1.version()); |
| 214 | return updateAndGet(key, valueMatcher, versionMatcher, computedValue.get()) |
| 215 | .thenApply(v -> { |
| 216 | if (v.updated()) { |
| 217 | return v.newValue(); |
| 218 | } else { |
| 219 | throw new ConsistentMapException.ConcurrentModification(); |
| 220 | } |
| 221 | }); |
| 222 | }); |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | @Override |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 226 | public CompletableFuture<Versioned<V>> put(K key, V value) { |
| 227 | checkNotNull(key, ERROR_NULL_KEY); |
| 228 | checkNotNull(value, ERROR_NULL_VALUE); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 229 | return updateAndGet(key, Match.any(), Match.any(), value).thenApply(v -> v.oldValue()); |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | @Override |
| 233 | public CompletableFuture<Versioned<V>> putAndGet(K key, V value) { |
| 234 | checkNotNull(key, ERROR_NULL_KEY); |
| 235 | checkNotNull(value, ERROR_NULL_VALUE); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 236 | return updateAndGet(key, Match.any(), Match.any(), value).thenApply(v -> v.newValue()); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | @Override |
| 240 | public CompletableFuture<Versioned<V>> remove(K key) { |
| 241 | checkNotNull(key, ERROR_NULL_KEY); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 242 | return updateAndGet(key, Match.any(), Match.any(), null).thenApply(v -> v.oldValue()); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 243 | } |
| 244 | |
| 245 | @Override |
| 246 | public CompletableFuture<Void> clear() { |
Madan Jampani | 02b7fb8 | 2015-05-01 13:01:20 -0700 | [diff] [blame] | 247 | checkIfUnmodifiable(); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 248 | return database.mapClear(name).thenApply(this::unwrapResult); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 249 | } |
| 250 | |
| 251 | @Override |
| 252 | public CompletableFuture<Set<K>> keySet() { |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 253 | return database.mapKeySet(name) |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 254 | .thenApply(s -> s |
| 255 | .stream() |
| 256 | .map(this::dK) |
| 257 | .collect(Collectors.toSet())); |
| 258 | } |
| 259 | |
| 260 | @Override |
| 261 | public CompletableFuture<Collection<Versioned<V>>> values() { |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 262 | return database.mapValues(name).thenApply(c -> c |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 263 | .stream() |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 264 | .map(v -> v.<V>map(serializer::decode)) |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 265 | .collect(Collectors.toList())); |
| 266 | } |
| 267 | |
| 268 | @Override |
| 269 | public CompletableFuture<Set<Entry<K, Versioned<V>>>> entrySet() { |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 270 | return database.mapEntrySet(name).thenApply(s -> s |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 271 | .stream() |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 272 | .map(this::mapRawEntry) |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 273 | .collect(Collectors.toSet())); |
| 274 | } |
| 275 | |
| 276 | @Override |
| 277 | public CompletableFuture<Versioned<V>> putIfAbsent(K key, V value) { |
| 278 | checkNotNull(key, ERROR_NULL_KEY); |
| 279 | checkNotNull(value, ERROR_NULL_VALUE); |
Madan Jampani | ae2d0d7 | 2015-07-21 16:42:59 -0700 | [diff] [blame] | 280 | return updateAndGet(key, Match.ifNull(), Match.any(), value).thenApply(v -> v.oldValue()); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | @Override |
| 284 | public CompletableFuture<Boolean> remove(K key, V value) { |
| 285 | checkNotNull(key, ERROR_NULL_KEY); |
| 286 | checkNotNull(value, ERROR_NULL_VALUE); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 287 | return updateAndGet(key, Match.ifValue(value), Match.any(), null).thenApply(v -> v.updated()); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 288 | } |
| 289 | |
| 290 | @Override |
| 291 | public CompletableFuture<Boolean> remove(K key, long version) { |
| 292 | checkNotNull(key, ERROR_NULL_KEY); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 293 | return updateAndGet(key, Match.any(), Match.ifValue(version), null).thenApply(v -> v.updated()); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 294 | } |
| 295 | |
| 296 | @Override |
| 297 | public CompletableFuture<Boolean> replace(K key, V oldValue, V newValue) { |
| 298 | checkNotNull(key, ERROR_NULL_KEY); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 299 | checkNotNull(oldValue, ERROR_NULL_VALUE); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 300 | checkNotNull(newValue, ERROR_NULL_VALUE); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 301 | return updateAndGet(key, Match.ifValue(oldValue), Match.any(), newValue).thenApply(v -> v.updated()); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | @Override |
| 305 | public CompletableFuture<Boolean> replace(K key, long oldVersion, V newValue) { |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 306 | return updateAndGet(key, Match.any(), Match.ifValue(oldVersion), newValue).thenApply(v -> v.updated()); |
Madan Jampani | 346d4f5 | 2015-05-04 11:09:39 -0700 | [diff] [blame] | 307 | } |
| 308 | |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 309 | private Map.Entry<K, Versioned<V>> mapRawEntry(Map.Entry<String, Versioned<byte[]>> e) { |
| 310 | return Maps.immutableEntry(dK(e.getKey()), e.getValue().<V>map(serializer::decode)); |
| 311 | } |
| 312 | |
| 313 | private CompletableFuture<UpdateResult<K, V>> updateAndGet(K key, |
| 314 | Match<V> oldValueMatch, |
| 315 | Match<Long> oldVersionMatch, |
| 316 | V value) { |
Madan Jampani | 02b7fb8 | 2015-05-01 13:01:20 -0700 | [diff] [blame] | 317 | checkIfUnmodifiable(); |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 318 | return database.mapUpdate(name, |
| 319 | keyCache.getUnchecked(key), |
| 320 | oldValueMatch.map(serializer::encode), |
| 321 | oldVersionMatch, |
| 322 | value == null ? null : serializer.encode(value)) |
| 323 | .thenApply(this::unwrapResult) |
| 324 | .thenApply(r -> r.<K, V>map(this::dK, serializer::decode)) |
| 325 | .whenComplete((r, e) -> notifyListeners(r != null ? r.toMapEvent() : null)); |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 326 | } |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 327 | |
| 328 | private <T> T unwrapResult(Result<T> result) { |
| 329 | if (result.status() == Result.Status.LOCKED) { |
| 330 | throw new ConsistentMapException.ConcurrentModification(); |
| 331 | } else if (result.success()) { |
| 332 | return result.value(); |
| 333 | } else { |
| 334 | throw new IllegalStateException("Must not be here"); |
| 335 | } |
| 336 | } |
Madan Jampani | 02b7fb8 | 2015-05-01 13:01:20 -0700 | [diff] [blame] | 337 | |
| 338 | private void checkIfUnmodifiable() { |
| 339 | if (readOnly) { |
| 340 | throw new UnsupportedOperationException(); |
| 341 | } |
| 342 | } |
Madan Jampani | 50589ac | 2015-06-08 11:38:46 -0700 | [diff] [blame] | 343 | |
| 344 | @Override |
| 345 | public void addListener(MapEventListener<K, V> listener) { |
| 346 | listeners.add(listener); |
| 347 | } |
| 348 | |
| 349 | @Override |
| 350 | public void removeListener(MapEventListener<K, V> listener) { |
| 351 | listeners.remove(listener); |
| 352 | } |
| 353 | |
| 354 | protected void notifyListeners(MapEvent<K, V> event) { |
| 355 | try { |
| 356 | if (event != null) { |
| 357 | notifyLocalListeners(event); |
| 358 | notifyRemoteListeners(event); |
| 359 | } |
| 360 | } catch (Exception e) { |
| 361 | log.warn("Failure notifying listeners about {}", event, e); |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | protected void notifyLocalListeners(MapEvent<K, V> event) { |
| 366 | listeners.forEach(listener -> listener.event(event)); |
| 367 | } |
| 368 | |
| 369 | protected void notifyRemoteListeners(MapEvent<K, V> event) { |
| 370 | if (eventPublisher != null) { |
| 371 | eventPublisher.accept(event); |
| 372 | } |
| 373 | } |
Madan Jampani | 7c52100 | 2015-03-23 12:23:01 -0700 | [diff] [blame] | 374 | } |