Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | 0a4e674 | 2016-09-15 23:03:10 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Laboratory |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 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.primitives.impl; |
| 18 | |
| 19 | import com.google.common.collect.Maps; |
| 20 | import org.onlab.util.Tools; |
| 21 | import org.onosproject.store.primitives.TransactionId; |
| 22 | import org.onosproject.store.service.AsyncConsistentTreeMap; |
| 23 | import org.onosproject.store.service.MapEvent; |
| 24 | import org.onosproject.store.service.MapEventListener; |
| 25 | import org.onosproject.store.service.MapTransaction; |
| 26 | import org.onosproject.store.service.Versioned; |
| 27 | |
| 28 | import java.util.Collection; |
| 29 | import java.util.Map; |
| 30 | import java.util.NavigableMap; |
| 31 | import java.util.NavigableSet; |
| 32 | import java.util.Set; |
| 33 | import java.util.concurrent.CompletableFuture; |
| 34 | import java.util.concurrent.Executor; |
| 35 | import java.util.function.BiFunction; |
| 36 | import java.util.function.Function; |
| 37 | import java.util.function.Predicate; |
| 38 | import java.util.stream.Collectors; |
| 39 | |
| 40 | /** |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 41 | * An {@code AsyncConsistentTreeMap} that maps its operations to operations on |
| 42 | * a differently typed {@code AsyncConsistentTreeMap} by transcoding operation |
| 43 | * inputs and outputs. |
| 44 | * |
| 45 | * @param <V2> value type of other map |
| 46 | * @param <V1> value type of this map |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 47 | */ |
| 48 | public class TranscodingAsyncConsistentTreeMap<V1, V2> |
| 49 | implements AsyncConsistentTreeMap<V1> { |
| 50 | private final AsyncConsistentTreeMap<V2> backingMap; |
| 51 | private final Function<V2, V1> valueDecoder; |
| 52 | private final Function<V1, V2> valueEncoder; |
| 53 | private final Function<Versioned<V2>, Versioned<V1>> |
| 54 | versionedValueTransform; |
| 55 | private final Map<MapEventListener<String, V1>, |
| 56 | TranscodingAsyncConsistentTreeMap.InternalBackingMapEventListener> |
| 57 | listeners = Maps.newIdentityHashMap(); |
| 58 | |
| 59 | public TranscodingAsyncConsistentTreeMap( |
| 60 | AsyncConsistentTreeMap<V2> backingMap, |
| 61 | Function<V1, V2> valueEncoder, |
| 62 | Function<V2, V1> valueDecoder) { |
| 63 | this.backingMap = backingMap; |
| 64 | this.valueEncoder = v -> v == null ? null : valueEncoder.apply(v); |
| 65 | this.valueDecoder = v -> v == null ? null : valueDecoder.apply(v); |
| 66 | this.versionedValueTransform = v -> v == null ? null : |
| 67 | v.map(valueDecoder); |
| 68 | } |
| 69 | @Override |
| 70 | public CompletableFuture<String> firstKey() { |
| 71 | return backingMap.firstKey(); |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | public CompletableFuture<String> lastKey() { |
| 76 | return backingMap.lastKey(); |
| 77 | } |
| 78 | |
| 79 | @Override |
| 80 | public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| 81 | ceilingEntry(String key) { |
| 82 | return backingMap.ceilingEntry(key) |
| 83 | .thenApply( |
| 84 | entry -> |
| 85 | Maps.immutableEntry( |
| 86 | entry.getKey(), |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 87 | versionedValueTransform |
| 88 | .apply(entry.getValue()))); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | @Override |
| 92 | public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| 93 | floorEntry(String key) { |
| 94 | return backingMap.floorEntry(key) |
| 95 | .thenApply( |
| 96 | entry -> |
| 97 | Maps.immutableEntry( |
| 98 | entry.getKey(), |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 99 | versionedValueTransform |
| 100 | .apply(entry.getValue()))); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | @Override |
| 104 | public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| 105 | higherEntry(String key) { |
| 106 | return backingMap |
| 107 | .higherEntry(key) |
| 108 | .thenApply(entry -> |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 109 | Maps.immutableEntry( |
| 110 | entry.getKey(), |
| 111 | versionedValueTransform |
| 112 | .apply(entry.getValue()))); |
| 113 | } |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 114 | |
| 115 | @Override |
| 116 | public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| 117 | lowerEntry(String key) { |
| 118 | return backingMap.lowerEntry(key).thenApply( |
| 119 | entry -> |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 120 | Maps.immutableEntry( |
| 121 | entry.getKey(), |
| 122 | versionedValueTransform |
| 123 | .apply(entry.getValue()))); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | @Override |
| 127 | public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| 128 | firstEntry() { |
| 129 | return backingMap.firstEntry() |
| 130 | .thenApply(entry -> |
| 131 | Maps.immutableEntry( |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 132 | entry.getKey(), |
| 133 | versionedValueTransform |
| 134 | .apply(entry.getValue()))); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | @Override |
| 138 | public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| 139 | lastEntry() { |
| 140 | return backingMap.lastEntry() |
| 141 | .thenApply( |
| 142 | entry -> Maps.immutableEntry( |
| 143 | entry.getKey(), |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 144 | versionedValueTransform |
| 145 | .apply(entry.getValue()))); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | @Override |
| 149 | public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| 150 | pollFirstEntry() { |
| 151 | return backingMap.pollFirstEntry() |
| 152 | .thenApply( |
| 153 | entry -> Maps.immutableEntry( |
| 154 | entry.getKey(), |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 155 | versionedValueTransform |
| 156 | .apply(entry.getValue()))); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | @Override |
| 160 | public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| 161 | pollLastEntry() { |
| 162 | return backingMap.pollLastEntry() |
| 163 | .thenApply(entry -> Maps.immutableEntry( |
| 164 | entry.getKey(), |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 165 | versionedValueTransform.apply(entry.getValue()))); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | @Override |
| 169 | public CompletableFuture<String> lowerKey(String key) { |
| 170 | return backingMap.lowerKey(key); |
| 171 | } |
| 172 | |
| 173 | @Override |
| 174 | public CompletableFuture<String> floorKey(String key) { |
| 175 | return backingMap.floorKey(key); |
| 176 | } |
| 177 | |
| 178 | @Override |
| 179 | public CompletableFuture<String> ceilingKey(String key) { |
| 180 | return backingMap.ceilingKey(key); |
| 181 | } |
| 182 | |
| 183 | @Override |
| 184 | public CompletableFuture<String> higherKey(String key) { |
| 185 | return backingMap.higherKey(key); |
| 186 | } |
| 187 | |
| 188 | @Override |
| 189 | public CompletableFuture<NavigableSet<String>> navigableKeySet() { |
| 190 | return backingMap.navigableKeySet(); |
| 191 | } |
| 192 | |
| 193 | @Override |
| 194 | public CompletableFuture<NavigableMap<String, V1>> subMap( |
| 195 | String upperKey, |
| 196 | String lowerKey, |
| 197 | boolean inclusiveUpper, |
| 198 | boolean inclusiveLower) { |
| 199 | throw new UnsupportedOperationException("This operation is not yet" + |
| 200 | "supported."); |
| 201 | } |
| 202 | |
| 203 | @Override |
| 204 | public String name() { |
| 205 | return backingMap.name(); |
| 206 | } |
| 207 | |
| 208 | @Override |
| 209 | public CompletableFuture<Integer> size() { |
| 210 | return backingMap.size(); |
| 211 | } |
| 212 | |
| 213 | @Override |
| 214 | public CompletableFuture<Boolean> containsKey(String key) { |
| 215 | return backingMap.containsKey(key); |
| 216 | } |
| 217 | |
| 218 | @Override |
| 219 | public CompletableFuture<Boolean> containsValue(V1 value) { |
| 220 | return backingMap.containsValue(valueEncoder.apply(value)); |
| 221 | } |
| 222 | |
| 223 | @Override |
| 224 | public CompletableFuture<Versioned<V1>> get(String key) { |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 225 | return backingMap.get(key).thenApply(versionedValueTransform); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | @Override |
| 229 | public CompletableFuture<Versioned<V1>> computeIf( |
| 230 | String key, Predicate<? super V1> condition, |
| 231 | BiFunction<? super String, ? super V1, ? extends V1> |
| 232 | remappingFunction) { |
| 233 | try { |
| 234 | return backingMap |
| 235 | .computeIf( |
| 236 | key, |
| 237 | v -> condition.test(valueDecoder.apply(v)), |
| 238 | (k, v) -> valueEncoder |
| 239 | .apply( |
| 240 | remappingFunction.apply( |
| 241 | key, |
| 242 | valueDecoder.apply(v)))) |
| 243 | .thenApply(versionedValueTransform); |
| 244 | } catch (Exception e) { |
| 245 | return Tools.exceptionalFuture(e); |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | @Override |
| 250 | public CompletableFuture<Versioned<V1>> put(String key, V1 value) { |
| 251 | return backingMap.put(key, valueEncoder.apply(value)) |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 252 | .thenApply(versionedValueTransform); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 253 | } |
| 254 | |
| 255 | @Override |
| 256 | public CompletableFuture<Versioned<V1>> putAndGet(String key, V1 value) { |
| 257 | return backingMap.putAndGet(key, valueEncoder.apply(value)) |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 258 | .thenApply(versionedValueTransform); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | @Override |
| 262 | public CompletableFuture<Versioned<V1>> remove(String key) { |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 263 | return backingMap.remove(key).thenApply(versionedValueTransform); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | @Override |
| 267 | public CompletableFuture<Void> clear() { |
| 268 | return backingMap.clear(); |
| 269 | } |
| 270 | |
| 271 | @Override |
| 272 | public CompletableFuture<Set<String>> keySet() { |
| 273 | return backingMap.keySet(); |
| 274 | } |
| 275 | |
| 276 | @Override |
| 277 | public CompletableFuture<Collection<Versioned<V1>>> values() { |
| 278 | return backingMap.values().thenApply(valueSet -> valueSet.stream() |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 279 | .map(versionedValueTransform).collect(Collectors.toSet())); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | @Override |
| 283 | public CompletableFuture<Set<Map.Entry<String, Versioned<V1>>>> |
| 284 | entrySet() { |
| 285 | return backingMap.entrySet() |
| 286 | .thenApply( |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 287 | entries -> entries |
| 288 | .stream() |
| 289 | .map(entry -> |
| 290 | Maps.immutableEntry( |
| 291 | entry.getKey(), |
| 292 | versionedValueTransform |
| 293 | .apply(entry.getValue()) |
| 294 | )) |
| 295 | .collect(Collectors.toSet())); |
| 296 | } |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 297 | |
| 298 | @Override |
| 299 | public CompletableFuture<Versioned<V1>> putIfAbsent(String key, V1 value) { |
| 300 | return backingMap.putIfAbsent(key, valueEncoder.apply(value)) |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 301 | .thenApply(versionedValueTransform); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | @Override |
| 305 | public CompletableFuture<Boolean> remove(String key, V1 value) { |
| 306 | return backingMap.remove(key, valueEncoder.apply(value)); |
| 307 | } |
| 308 | |
| 309 | @Override |
| 310 | public CompletableFuture<Boolean> remove(String key, long version) { |
| 311 | return backingMap.remove(key, version); |
| 312 | } |
| 313 | |
| 314 | @Override |
| 315 | public CompletableFuture<Versioned<V1>> replace(String key, V1 value) { |
| 316 | return backingMap.replace(key, valueEncoder.apply(value)) |
Aaron Kruglikov | b06078c | 2016-08-30 17:28:00 -0700 | [diff] [blame] | 317 | .thenApply(versionedValueTransform); |
Aaron Kruglikov | ed88ff6 | 2016-08-01 16:02:09 -0700 | [diff] [blame] | 318 | } |
| 319 | |
| 320 | @Override |
| 321 | public CompletableFuture<Boolean> replace(String key, V1 oldValue, |
| 322 | V1 newValue) { |
| 323 | return backingMap.replace(key, valueEncoder.apply(oldValue), |
| 324 | valueEncoder.apply(newValue)); |
| 325 | } |
| 326 | |
| 327 | @Override |
| 328 | public CompletableFuture<Boolean> replace(String key, long oldVersion, |
| 329 | V1 newValue) { |
| 330 | return backingMap.replace(key, oldVersion, |
| 331 | valueEncoder.apply(newValue)); |
| 332 | } |
| 333 | |
| 334 | @Override |
| 335 | public CompletableFuture<Void> addListener( |
| 336 | MapEventListener<String, V1> listener, |
| 337 | Executor executor) { |
| 338 | InternalBackingMapEventListener backingMapEventListener = |
| 339 | listeners.computeIfAbsent( |
| 340 | listener, |
| 341 | k -> new InternalBackingMapEventListener(listener)); |
| 342 | return backingMap.addListener(backingMapEventListener, executor); |
| 343 | } |
| 344 | |
| 345 | @Override |
| 346 | public CompletableFuture<Void> removeListener( |
| 347 | MapEventListener<String, V1> listener) { |
| 348 | InternalBackingMapEventListener backingMapEventListener = |
| 349 | listeners.remove(listener); |
| 350 | if (backingMapEventListener == null) { |
| 351 | return CompletableFuture.completedFuture(null); |
| 352 | } else { |
| 353 | return backingMap.removeListener(backingMapEventListener); |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | @Override |
| 358 | public CompletableFuture<Boolean> prepare( |
| 359 | MapTransaction<String, V1> transaction) { |
| 360 | throw new UnsupportedOperationException("This operation is not yet " + |
| 361 | "supported."); |
| 362 | } |
| 363 | |
| 364 | @Override |
| 365 | public CompletableFuture<Void> commit(TransactionId transactionId) { |
| 366 | throw new UnsupportedOperationException("This operation is not yet " + |
| 367 | "supported."); } |
| 368 | |
| 369 | @Override |
| 370 | public CompletableFuture<Void> rollback(TransactionId transactionId) { |
| 371 | throw new UnsupportedOperationException("This operation is not yet " + |
| 372 | "supported."); } |
| 373 | |
| 374 | @Override |
| 375 | public CompletableFuture<Boolean> prepareAndCommit( |
| 376 | MapTransaction<String, V1> transaction) { |
| 377 | throw new UnsupportedOperationException("This operation is not yet " + |
| 378 | "supported."); } |
| 379 | private class InternalBackingMapEventListener |
| 380 | implements MapEventListener<String, V2> { |
| 381 | |
| 382 | private final MapEventListener<String, V1> listener; |
| 383 | |
| 384 | InternalBackingMapEventListener( |
| 385 | MapEventListener<String, V1> listener) { |
| 386 | this.listener = listener; |
| 387 | } |
| 388 | |
| 389 | @Override |
| 390 | public void event(MapEvent<String, V2> event) { |
| 391 | listener.event(new MapEvent<String, V1>( |
| 392 | event.name(), |
| 393 | event.key(), |
| 394 | event.newValue() != null ? |
| 395 | event.newValue().map(valueDecoder) : null, |
| 396 | event.oldValue() != null ? |
| 397 | event.oldValue().map(valueDecoder) : null)); |
| 398 | } |
| 399 | } |
| 400 | } |