Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 1 | /* |
Brian O'Connor | 5ab426f | 2016-04-09 01:19:45 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Laboratory |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [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 java.util.Collection; |
| 20 | import java.util.Map; |
| 21 | import java.util.Map.Entry; |
| 22 | import java.util.Set; |
| 23 | import java.util.concurrent.CompletableFuture; |
Madan Jampani | 0463cf9 | 2016-05-04 14:46:08 -0700 | [diff] [blame] | 24 | import java.util.concurrent.Executor; |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 25 | import java.util.function.BiFunction; |
Madan Jampani | 1d3b617 | 2016-04-28 13:22:57 -0700 | [diff] [blame] | 26 | import java.util.function.Consumer; |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 27 | import java.util.function.Function; |
| 28 | import java.util.function.Predicate; |
| 29 | import java.util.stream.Collectors; |
| 30 | |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 31 | import org.onlab.util.Tools; |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 32 | import org.onosproject.store.primitives.TransactionId; |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 33 | import org.onosproject.store.service.AsyncConsistentMap; |
| 34 | import org.onosproject.store.service.MapEvent; |
| 35 | import org.onosproject.store.service.MapEventListener; |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 36 | import org.onosproject.store.service.MapTransaction; |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 37 | import org.onosproject.store.service.Versioned; |
Madan Jampani | 0463cf9 | 2016-05-04 14:46:08 -0700 | [diff] [blame] | 38 | |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 39 | import com.google.common.collect.Maps; |
| 40 | |
| 41 | /** |
| 42 | * An {@code AsyncConsistentMap} that maps its operations to operations on a |
| 43 | * differently typed {@code AsyncConsistentMap} by transcoding operation inputs and outputs. |
| 44 | * |
| 45 | * @param <K2> key type of other map |
| 46 | * @param <V2> value type of other map |
| 47 | * @param <K1> key type of this map |
| 48 | * @param <V1> value type of this map |
| 49 | */ |
| 50 | public class TranscodingAsyncConsistentMap<K1, V1, K2, V2> implements AsyncConsistentMap<K1, V1> { |
| 51 | |
| 52 | private final AsyncConsistentMap<K2, V2> backingMap; |
| 53 | private final Function<K1, K2> keyEncoder; |
| 54 | private final Function<K2, K1> keyDecoder; |
| 55 | private final Function<V2, V1> valueDecoder; |
| 56 | private final Function<V1, V2> valueEncoder; |
| 57 | private final Function<Versioned<V2>, Versioned<V1>> versionedValueTransform; |
| 58 | private final Map<MapEventListener<K1, V1>, InternalBackingMapEventListener> listeners = |
| 59 | Maps.newIdentityHashMap(); |
| 60 | |
| 61 | public TranscodingAsyncConsistentMap(AsyncConsistentMap<K2, V2> backingMap, |
| 62 | Function<K1, K2> keyEncoder, |
| 63 | Function<K2, K1> keyDecoder, |
| 64 | Function<V1, V2> valueEncoder, |
| 65 | Function<V2, V1> valueDecoder) { |
| 66 | this.backingMap = backingMap; |
| 67 | this.keyEncoder = k -> k == null ? null : keyEncoder.apply(k); |
Madan Jampani | 1e8e89c | 2016-02-02 08:53:56 -0800 | [diff] [blame] | 68 | this.keyDecoder = k -> k == null ? null : keyDecoder.apply(k); |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 69 | this.valueEncoder = v -> v == null ? null : valueEncoder.apply(v); |
Madan Jampani | 1e8e89c | 2016-02-02 08:53:56 -0800 | [diff] [blame] | 70 | this.valueDecoder = v -> v == null ? null : valueDecoder.apply(v); |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 71 | this.versionedValueTransform = v -> v == null ? null : v.map(valueDecoder); |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | public String name() { |
| 76 | return backingMap.name(); |
| 77 | } |
| 78 | |
| 79 | @Override |
| 80 | public CompletableFuture<Integer> size() { |
| 81 | return backingMap.size(); |
| 82 | } |
| 83 | |
| 84 | @Override |
| 85 | public CompletableFuture<Boolean> containsKey(K1 key) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 86 | try { |
| 87 | return backingMap.containsKey(keyEncoder.apply(key)); |
| 88 | } catch (Exception e) { |
| 89 | return Tools.exceptionalFuture(e); |
| 90 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | @Override |
| 94 | public CompletableFuture<Boolean> containsValue(V1 value) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 95 | try { |
| 96 | return backingMap.containsValue(valueEncoder.apply(value)); |
| 97 | } catch (Exception e) { |
| 98 | return Tools.exceptionalFuture(e); |
| 99 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | @Override |
| 103 | public CompletableFuture<Versioned<V1>> get(K1 key) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 104 | try { |
| 105 | return backingMap.get(keyEncoder.apply(key)).thenApply(versionedValueTransform); |
| 106 | } catch (Exception e) { |
| 107 | return Tools.exceptionalFuture(e); |
| 108 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 109 | } |
| 110 | |
| 111 | @Override |
| 112 | public CompletableFuture<Versioned<V1>> computeIf(K1 key, |
| 113 | Predicate<? super V1> condition, |
| 114 | BiFunction<? super K1, ? super V1, ? extends V1> remappingFunction) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 115 | try { |
| 116 | return backingMap.computeIf(keyEncoder.apply(key), |
| 117 | v -> condition.test(valueDecoder.apply(v)), |
| 118 | (k, v) -> valueEncoder.apply(remappingFunction.apply(keyDecoder.apply(k), |
| 119 | valueDecoder.apply(v)))) |
| 120 | .thenApply(versionedValueTransform); |
| 121 | } catch (Exception e) { |
| 122 | return Tools.exceptionalFuture(e); |
| 123 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | @Override |
| 127 | public CompletableFuture<Versioned<V1>> put(K1 key, V1 value) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 128 | try { |
| 129 | return backingMap.put(keyEncoder.apply(key), valueEncoder.apply(value)) |
| 130 | .thenApply(versionedValueTransform); |
| 131 | } catch (Exception e) { |
| 132 | return Tools.exceptionalFuture(e); |
| 133 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 134 | } |
| 135 | |
| 136 | @Override |
| 137 | public CompletableFuture<Versioned<V1>> putAndGet(K1 key, V1 value) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 138 | try { |
| 139 | return backingMap.putAndGet(keyEncoder.apply(key), valueEncoder.apply(value)) |
| 140 | .thenApply(versionedValueTransform); |
| 141 | } catch (Exception e) { |
| 142 | return Tools.exceptionalFuture(e); |
| 143 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | @Override |
| 147 | public CompletableFuture<Versioned<V1>> remove(K1 key) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 148 | try { |
| 149 | return backingMap.remove(keyEncoder.apply(key)).thenApply(versionedValueTransform); |
| 150 | } catch (Exception e) { |
| 151 | return Tools.exceptionalFuture(e); |
| 152 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | @Override |
| 156 | public CompletableFuture<Void> clear() { |
| 157 | return backingMap.clear(); |
| 158 | } |
| 159 | |
| 160 | @Override |
| 161 | public CompletableFuture<Set<K1>> keySet() { |
| 162 | return backingMap.keySet() |
| 163 | .thenApply(s -> s.stream().map(keyDecoder).collect(Collectors.toSet())); |
| 164 | } |
| 165 | |
| 166 | @Override |
| 167 | public CompletableFuture<Collection<Versioned<V1>>> values() { |
| 168 | return backingMap.values() |
| 169 | .thenApply(c -> c.stream().map(versionedValueTransform).collect(Collectors.toList())); |
| 170 | } |
| 171 | |
| 172 | @Override |
| 173 | public CompletableFuture<Set<Entry<K1, Versioned<V1>>>> entrySet() { |
| 174 | return backingMap.entrySet() |
| 175 | .thenApply(s -> s.stream() |
| 176 | .map(e -> Maps.immutableEntry(keyDecoder.apply(e.getKey()), |
| 177 | versionedValueTransform.apply(e.getValue()))) |
| 178 | .collect(Collectors.toSet())); |
| 179 | } |
| 180 | |
| 181 | @Override |
| 182 | public CompletableFuture<Versioned<V1>> putIfAbsent(K1 key, V1 value) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 183 | try { |
| 184 | return backingMap.putIfAbsent(keyEncoder.apply(key), valueEncoder.apply(value)) |
| 185 | .thenApply(versionedValueTransform); |
| 186 | } catch (Exception e) { |
| 187 | return Tools.exceptionalFuture(e); |
| 188 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | @Override |
| 192 | public CompletableFuture<Boolean> remove(K1 key, V1 value) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 193 | try { |
| 194 | return backingMap.remove(keyEncoder.apply(key), valueEncoder.apply(value)); |
| 195 | } catch (Exception e) { |
| 196 | return Tools.exceptionalFuture(e); |
| 197 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | @Override |
| 201 | public CompletableFuture<Boolean> remove(K1 key, long version) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 202 | try { |
| 203 | return backingMap.remove(keyEncoder.apply(key), version); |
| 204 | } catch (Exception e) { |
| 205 | return Tools.exceptionalFuture(e); |
| 206 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 207 | } |
| 208 | |
| 209 | @Override |
| 210 | public CompletableFuture<Versioned<V1>> replace(K1 key, V1 value) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 211 | try { |
| 212 | return backingMap.replace(keyEncoder.apply(key), valueEncoder.apply(value)) |
| 213 | .thenApply(versionedValueTransform); |
| 214 | } catch (Exception e) { |
| 215 | return Tools.exceptionalFuture(e); |
| 216 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 217 | } |
| 218 | |
| 219 | @Override |
| 220 | public CompletableFuture<Boolean> replace(K1 key, V1 oldValue, V1 newValue) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 221 | try { |
| 222 | return backingMap.replace(keyEncoder.apply(key), |
| 223 | valueEncoder.apply(oldValue), |
| 224 | valueEncoder.apply(newValue)); |
| 225 | } catch (Exception e) { |
| 226 | return Tools.exceptionalFuture(e); |
| 227 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | @Override |
| 231 | public CompletableFuture<Boolean> replace(K1 key, long oldVersion, V1 newValue) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 232 | try { |
| 233 | return backingMap.replace(keyEncoder.apply(key), oldVersion, valueEncoder.apply(newValue)); |
| 234 | } catch (Exception e) { |
| 235 | return Tools.exceptionalFuture(e); |
| 236 | } |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | @Override |
Madan Jampani | 0463cf9 | 2016-05-04 14:46:08 -0700 | [diff] [blame] | 240 | public CompletableFuture<Void> addListener(MapEventListener<K1, V1> listener, Executor executor) { |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 241 | synchronized (listeners) { |
| 242 | InternalBackingMapEventListener backingMapListener = |
| 243 | listeners.computeIfAbsent(listener, k -> new InternalBackingMapEventListener(listener)); |
Madan Jampani | 0463cf9 | 2016-05-04 14:46:08 -0700 | [diff] [blame] | 244 | return backingMap.addListener(backingMapListener, executor); |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 245 | } |
| 246 | } |
| 247 | |
| 248 | @Override |
| 249 | public CompletableFuture<Void> removeListener(MapEventListener<K1, V1> listener) { |
| 250 | InternalBackingMapEventListener backingMapListener = listeners.remove(listener); |
| 251 | if (backingMapListener != null) { |
| 252 | return backingMap.removeListener(backingMapListener); |
| 253 | } else { |
| 254 | return CompletableFuture.completedFuture(null); |
| 255 | } |
| 256 | } |
| 257 | |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 258 | @Override |
| 259 | public CompletableFuture<Boolean> prepare(MapTransaction<K1, V1> transaction) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 260 | try { |
| 261 | return backingMap.prepare(transaction.map(keyEncoder, valueEncoder)); |
| 262 | } catch (Exception e) { |
| 263 | return Tools.exceptionalFuture(e); |
| 264 | } |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | @Override |
| 268 | public CompletableFuture<Void> commit(TransactionId transactionId) { |
| 269 | return backingMap.commit(transactionId); |
| 270 | } |
| 271 | |
| 272 | @Override |
| 273 | public CompletableFuture<Void> rollback(TransactionId transactionId) { |
| 274 | return backingMap.rollback(transactionId); |
| 275 | } |
| 276 | |
Madan Jampani | 542d9e2 | 2016-04-05 15:39:55 -0700 | [diff] [blame] | 277 | @Override |
| 278 | public CompletableFuture<Boolean> prepareAndCommit(MapTransaction<K1, V1> transaction) { |
Madan Jampani | e9c9a71 | 2016-04-18 10:58:04 -0700 | [diff] [blame] | 279 | try { |
| 280 | return backingMap.prepareAndCommit(transaction.map(keyEncoder, valueEncoder)); |
| 281 | } catch (Exception e) { |
| 282 | return Tools.exceptionalFuture(e); |
| 283 | } |
Madan Jampani | 542d9e2 | 2016-04-05 15:39:55 -0700 | [diff] [blame] | 284 | } |
| 285 | |
Madan Jampani | 1d3b617 | 2016-04-28 13:22:57 -0700 | [diff] [blame] | 286 | @Override |
| 287 | public void addStatusChangeListener(Consumer<Status> listener) { |
| 288 | backingMap.addStatusChangeListener(listener); |
| 289 | } |
| 290 | |
| 291 | @Override |
| 292 | public void removeStatusChangeListener(Consumer<Status> listener) { |
| 293 | backingMap.removeStatusChangeListener(listener); |
| 294 | } |
| 295 | |
| 296 | @Override |
| 297 | public Collection<Consumer<Status>> statusChangeListeners() { |
| 298 | return backingMap.statusChangeListeners(); |
| 299 | } |
| 300 | |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 301 | private class InternalBackingMapEventListener implements MapEventListener<K2, V2> { |
| 302 | |
| 303 | private final MapEventListener<K1, V1> listener; |
| 304 | |
| 305 | InternalBackingMapEventListener(MapEventListener<K1, V1> listener) { |
| 306 | this.listener = listener; |
| 307 | } |
| 308 | |
| 309 | @Override |
| 310 | public void event(MapEvent<K2, V2> event) { |
| 311 | listener.event(new MapEvent<K1, V1>(event.name(), |
| 312 | keyDecoder.apply(event.key()), |
Madan Jampani | a9673fd | 2016-02-02 13:01:29 -0800 | [diff] [blame] | 313 | event.newValue() != null ? event.newValue().map(valueDecoder) : null, |
| 314 | event.oldValue() != null ? event.oldValue().map(valueDecoder) : null)); |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 315 | } |
| 316 | } |
| 317 | } |