Madan Jampani | 6468955 | 2015-02-17 10:00:27 -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 | 6468955 | 2015-02-17 10:00:27 -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 | |
Madan Jampani | f4c8850 | 2016-01-21 12:35:36 -0800 | [diff] [blame] | 17 | package org.onosproject.store.primitives.impl; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 18 | |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 19 | import java.util.List; |
| 20 | import java.util.Map; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 21 | import java.util.Set; |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 22 | import java.util.concurrent.CompletableFuture; |
HIGUCHI Yuta | 16e9d28 | 2016-04-12 14:09:30 -0700 | [diff] [blame] | 23 | import java.util.stream.Collectors; |
| 24 | import java.util.stream.Stream; |
| 25 | import org.apache.commons.lang3.tuple.Pair; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 26 | import org.onlab.util.HexString; |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 27 | import org.onosproject.store.primitives.MapUpdate; |
| 28 | import org.onosproject.store.service.AsyncConsistentMap; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 29 | import org.onosproject.store.service.ConsistentMap; |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 30 | import org.onosproject.store.service.MapTransaction; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 31 | import org.onosproject.store.service.Serializer; |
| 32 | import org.onosproject.store.service.TransactionContext; |
| 33 | import org.onosproject.store.service.TransactionalMap; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 34 | import org.onosproject.store.service.Versioned; |
| 35 | |
| 36 | import static com.google.common.base.Preconditions.*; |
| 37 | |
HIGUCHI Yuta | dc4394c | 2016-01-29 15:35:10 -0800 | [diff] [blame] | 38 | import com.google.common.base.MoreObjects; |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 39 | import com.google.common.base.Objects; |
| 40 | import com.google.common.cache.CacheBuilder; |
| 41 | import com.google.common.cache.CacheLoader; |
| 42 | import com.google.common.cache.LoadingCache; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 43 | import com.google.common.collect.Lists; |
| 44 | import com.google.common.collect.Maps; |
| 45 | import com.google.common.collect.Sets; |
| 46 | |
| 47 | /** |
| 48 | * Default Transactional Map implementation that provides a repeatable reads |
| 49 | * transaction isolation level. |
| 50 | * |
| 51 | * @param <K> key type |
| 52 | * @param <V> value type. |
| 53 | */ |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 54 | public class DefaultTransactionalMap<K, V> implements TransactionalMap<K, V>, TransactionParticipant { |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 55 | |
| 56 | private final TransactionContext txContext; |
| 57 | private static final String TX_CLOSED_ERROR = "Transaction is closed"; |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 58 | private final AsyncConsistentMap<K, V> backingMap; |
Sho SHIMIZU | 2425fcf | 2016-06-16 09:05:03 -0700 | [diff] [blame] | 59 | private final ConsistentMap<K, V> backingConsistentMap; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 60 | private final String name; |
| 61 | private final Serializer serializer; |
| 62 | private final Map<K, Versioned<V>> readCache = Maps.newConcurrentMap(); |
| 63 | private final Map<K, V> writeCache = Maps.newConcurrentMap(); |
| 64 | private final Set<K> deleteSet = Sets.newConcurrentHashSet(); |
| 65 | |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 66 | private static final String ERROR_NULL_VALUE = "Null values are not allowed"; |
| 67 | private static final String ERROR_NULL_KEY = "Null key is not allowed"; |
| 68 | |
| 69 | private final LoadingCache<K, String> keyCache = CacheBuilder.newBuilder() |
| 70 | .softValues() |
| 71 | .build(new CacheLoader<K, String>() { |
| 72 | |
| 73 | @Override |
| 74 | public String load(K key) { |
| 75 | return HexString.toHexString(serializer.encode(key)); |
| 76 | } |
| 77 | }); |
| 78 | |
| 79 | protected K dK(String key) { |
| 80 | return serializer.decode(HexString.fromHexString(key)); |
| 81 | } |
| 82 | |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 83 | public DefaultTransactionalMap( |
| 84 | String name, |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 85 | AsyncConsistentMap<K, V> backingMap, |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 86 | TransactionContext txContext, |
| 87 | Serializer serializer) { |
| 88 | this.name = name; |
| 89 | this.backingMap = backingMap; |
Sho SHIMIZU | 2425fcf | 2016-06-16 09:05:03 -0700 | [diff] [blame] | 90 | this.backingConsistentMap = backingMap.asConsistentMap(); |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 91 | this.txContext = txContext; |
| 92 | this.serializer = serializer; |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public V get(K key) { |
| 97 | checkState(txContext.isOpen(), TX_CLOSED_ERROR); |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 98 | checkNotNull(key, ERROR_NULL_KEY); |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 99 | if (deleteSet.contains(key)) { |
| 100 | return null; |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 101 | } |
| 102 | V latest = writeCache.get(key); |
| 103 | if (latest != null) { |
| 104 | return latest; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 105 | } else { |
Sho SHIMIZU | 2425fcf | 2016-06-16 09:05:03 -0700 | [diff] [blame] | 106 | Versioned<V> v = readCache.computeIfAbsent(key, k -> backingConsistentMap.get(k)); |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 107 | return v != null ? v.value() : null; |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | @Override |
Sho SHIMIZU | 637ae5d | 2016-06-10 11:08:13 -0700 | [diff] [blame^] | 112 | public boolean containsKey(K key) { |
| 113 | return get(key) != null; |
| 114 | } |
| 115 | |
| 116 | @Override |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 117 | public V put(K key, V value) { |
| 118 | checkState(txContext.isOpen(), TX_CLOSED_ERROR); |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 119 | checkNotNull(value, ERROR_NULL_VALUE); |
| 120 | |
| 121 | V latest = get(key); |
| 122 | writeCache.put(key, value); |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 123 | deleteSet.remove(key); |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 124 | return latest; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | @Override |
| 128 | public V remove(K key) { |
| 129 | checkState(txContext.isOpen(), TX_CLOSED_ERROR); |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 130 | V latest = get(key); |
| 131 | if (latest != null) { |
| 132 | writeCache.remove(key); |
| 133 | deleteSet.add(key); |
| 134 | } |
| 135 | return latest; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | @Override |
| 139 | public boolean remove(K key, V value) { |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 140 | checkState(txContext.isOpen(), TX_CLOSED_ERROR); |
| 141 | checkNotNull(value, ERROR_NULL_VALUE); |
| 142 | V latest = get(key); |
| 143 | if (Objects.equal(value, latest)) { |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 144 | remove(key); |
| 145 | return true; |
| 146 | } |
| 147 | return false; |
| 148 | } |
| 149 | |
| 150 | @Override |
| 151 | public boolean replace(K key, V oldValue, V newValue) { |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 152 | checkState(txContext.isOpen(), TX_CLOSED_ERROR); |
| 153 | checkNotNull(oldValue, ERROR_NULL_VALUE); |
| 154 | checkNotNull(newValue, ERROR_NULL_VALUE); |
| 155 | V latest = get(key); |
| 156 | if (Objects.equal(oldValue, latest)) { |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 157 | put(key, newValue); |
| 158 | return true; |
| 159 | } |
| 160 | return false; |
| 161 | } |
| 162 | |
| 163 | @Override |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 164 | public V putIfAbsent(K key, V value) { |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 165 | checkState(txContext.isOpen(), TX_CLOSED_ERROR); |
| 166 | checkNotNull(value, ERROR_NULL_VALUE); |
| 167 | V latest = get(key); |
| 168 | if (latest == null) { |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 169 | put(key, value); |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 170 | } |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 171 | return latest; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 172 | } |
| 173 | |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 174 | @Override |
| 175 | public CompletableFuture<Boolean> prepare() { |
| 176 | return backingMap.prepare(new MapTransaction<>(txContext.transactionId(), updates())); |
| 177 | } |
| 178 | |
| 179 | @Override |
| 180 | public CompletableFuture<Void> commit() { |
| 181 | return backingMap.commit(txContext.transactionId()); |
| 182 | } |
| 183 | |
| 184 | @Override |
| 185 | public CompletableFuture<Void> rollback() { |
| 186 | return backingMap.rollback(txContext.transactionId()); |
| 187 | } |
| 188 | |
| 189 | @Override |
Madan Jampani | 542d9e2 | 2016-04-05 15:39:55 -0700 | [diff] [blame] | 190 | public CompletableFuture<Boolean> prepareAndCommit() { |
| 191 | return backingMap.prepareAndCommit(new MapTransaction<>(txContext.transactionId(), updates())); |
| 192 | } |
| 193 | |
| 194 | @Override |
| 195 | public int totalUpdates() { |
| 196 | return updates().size(); |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 197 | } |
| 198 | |
HIGUCHI Yuta | 16e9d28 | 2016-04-12 14:09:30 -0700 | [diff] [blame] | 199 | @Override |
| 200 | public boolean hasPendingUpdates() { |
| 201 | return updatesStream().findAny().isPresent(); |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 202 | } |
| 203 | |
HIGUCHI Yuta | 16e9d28 | 2016-04-12 14:09:30 -0700 | [diff] [blame] | 204 | protected Stream<MapUpdate<K, V>> updatesStream() { |
| 205 | return Stream.concat( |
| 206 | // 1st stream: delete ops |
| 207 | deleteSet.stream() |
| 208 | .map(key -> Pair.of(key, readCache.get(key))) |
| 209 | .filter(e -> e.getValue() != null) |
| 210 | .map(e -> MapUpdate.<K, V>newBuilder() |
| 211 | .withMapName(name) |
| 212 | .withType(MapUpdate.Type.REMOVE_IF_VERSION_MATCH) |
| 213 | .withKey(e.getKey()) |
| 214 | .withCurrentVersion(e.getValue().version()) |
| 215 | .build()), |
| 216 | // 2nd stream: write ops |
| 217 | writeCache.entrySet().stream() |
| 218 | .map(e -> { |
| 219 | Versioned<V> original = readCache.get(e.getKey()); |
| 220 | if (original == null) { |
| 221 | return MapUpdate.<K, V>newBuilder() |
| 222 | .withMapName(name) |
| 223 | .withType(MapUpdate.Type.PUT_IF_ABSENT) |
| 224 | .withKey(e.getKey()) |
| 225 | .withValue(e.getValue()) |
| 226 | .build(); |
| 227 | } else { |
| 228 | return MapUpdate.<K, V>newBuilder() |
| 229 | .withMapName(name) |
| 230 | .withType(MapUpdate.Type.PUT_IF_VERSION_MATCH) |
| 231 | .withKey(e.getKey()) |
| 232 | .withCurrentVersion(original.version()) |
| 233 | .withValue(e.getValue()) |
| 234 | .build(); |
| 235 | } |
| 236 | })); |
| 237 | } |
| 238 | |
| 239 | protected List<MapUpdate<K, V>> updates() { |
| 240 | return updatesStream().collect(Collectors.toList()); |
| 241 | } |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 242 | |
Madan Jampani | cadd70b | 2016-02-08 13:45:43 -0800 | [diff] [blame] | 243 | protected List<MapUpdate<String, byte[]>> toMapUpdates() { |
| 244 | List<MapUpdate<String, byte[]>> updates = Lists.newLinkedList(); |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 245 | deleteSet.forEach(key -> { |
| 246 | Versioned<V> original = readCache.get(key); |
| 247 | if (original != null) { |
Madan Jampani | cadd70b | 2016-02-08 13:45:43 -0800 | [diff] [blame] | 248 | updates.add(MapUpdate.<String, byte[]>newBuilder() |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 249 | .withMapName(name) |
Madan Jampani | cadd70b | 2016-02-08 13:45:43 -0800 | [diff] [blame] | 250 | .withType(MapUpdate.Type.REMOVE_IF_VERSION_MATCH) |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 251 | .withKey(keyCache.getUnchecked(key)) |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 252 | .withCurrentVersion(original.version()) |
| 253 | .build()); |
| 254 | } |
| 255 | }); |
| 256 | writeCache.forEach((key, value) -> { |
| 257 | Versioned<V> original = readCache.get(key); |
| 258 | if (original == null) { |
Madan Jampani | cadd70b | 2016-02-08 13:45:43 -0800 | [diff] [blame] | 259 | updates.add(MapUpdate.<String, byte[]>newBuilder() |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 260 | .withMapName(name) |
Madan Jampani | cadd70b | 2016-02-08 13:45:43 -0800 | [diff] [blame] | 261 | .withType(MapUpdate.Type.PUT_IF_ABSENT) |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 262 | .withKey(keyCache.getUnchecked(key)) |
| 263 | .withValue(serializer.encode(value)) |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 264 | .build()); |
| 265 | } else { |
Madan Jampani | cadd70b | 2016-02-08 13:45:43 -0800 | [diff] [blame] | 266 | updates.add(MapUpdate.<String, byte[]>newBuilder() |
Madan Jampani | 7804c99 | 2015-07-20 13:20:19 -0700 | [diff] [blame] | 267 | .withMapName(name) |
Madan Jampani | cadd70b | 2016-02-08 13:45:43 -0800 | [diff] [blame] | 268 | .withType(MapUpdate.Type.PUT_IF_VERSION_MATCH) |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 269 | .withKey(keyCache.getUnchecked(key)) |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 270 | .withCurrentVersion(original.version()) |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 271 | .withValue(serializer.encode(value)) |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 272 | .build()); |
| 273 | } |
| 274 | }); |
Madan Jampani | bff6d8f | 2015-03-31 16:53:47 -0700 | [diff] [blame] | 275 | return updates; |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 276 | } |
| 277 | |
HIGUCHI Yuta | dc4394c | 2016-01-29 15:35:10 -0800 | [diff] [blame] | 278 | @Override |
| 279 | public String toString() { |
| 280 | return MoreObjects.toStringHelper(this) |
| 281 | .add("backingMap", backingMap) |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 282 | .add("updates", updates()) |
HIGUCHI Yuta | dc4394c | 2016-01-29 15:35:10 -0800 | [diff] [blame] | 283 | .toString(); |
| 284 | } |
| 285 | |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 286 | /** |
| 287 | * Discards all changes made to this transactional map. |
| 288 | */ |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 289 | protected void abort() { |
Madan Jampani | 6468955 | 2015-02-17 10:00:27 -0800 | [diff] [blame] | 290 | readCache.clear(); |
| 291 | writeCache.clear(); |
| 292 | deleteSet.clear(); |
| 293 | } |
Sho SHIMIZU | 2425fcf | 2016-06-16 09:05:03 -0700 | [diff] [blame] | 294 | } |