Madan Jampani | 1007367 | 2016-01-21 19:13:59 -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 | 1007367 | 2016-01-21 19:13:59 -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 | package org.onosproject.store.primitives.impl; |
| 17 | |
| 18 | import static com.google.common.base.Preconditions.checkNotNull; |
| 19 | |
| 20 | import java.util.Collection; |
| 21 | import java.util.List; |
| 22 | import java.util.Map; |
| 23 | import java.util.Map.Entry; |
| 24 | import java.util.Set; |
| 25 | import java.util.TreeMap; |
| 26 | import java.util.concurrent.CompletableFuture; |
Madan Jampani | 0463cf9 | 2016-05-04 14:46:08 -0700 | [diff] [blame] | 27 | import java.util.concurrent.Executor; |
Madan Jampani | 1007367 | 2016-01-21 19:13:59 -0800 | [diff] [blame] | 28 | import java.util.concurrent.atomic.AtomicBoolean; |
| 29 | import java.util.concurrent.atomic.AtomicInteger; |
| 30 | import java.util.function.BiFunction; |
Madan Jampani | 1d3b617 | 2016-04-28 13:22:57 -0700 | [diff] [blame] | 31 | import java.util.function.Consumer; |
Madan Jampani | 1007367 | 2016-01-21 19:13:59 -0800 | [diff] [blame] | 32 | import java.util.function.Predicate; |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 33 | import java.util.stream.Collectors; |
Madan Jampani | 1007367 | 2016-01-21 19:13:59 -0800 | [diff] [blame] | 34 | |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 35 | import org.onlab.util.Tools; |
Madan Jampani | 1007367 | 2016-01-21 19:13:59 -0800 | [diff] [blame] | 36 | import org.onosproject.cluster.PartitionId; |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 37 | import org.onosproject.store.primitives.MapUpdate; |
| 38 | import org.onosproject.store.primitives.TransactionId; |
Madan Jampani | 1007367 | 2016-01-21 19:13:59 -0800 | [diff] [blame] | 39 | import org.onosproject.store.service.AsyncConsistentMap; |
| 40 | import org.onosproject.store.service.MapEventListener; |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 41 | import org.onosproject.store.service.MapTransaction; |
Madan Jampani | 1007367 | 2016-01-21 19:13:59 -0800 | [diff] [blame] | 42 | import org.onosproject.store.service.Versioned; |
Madan Jampani | 0463cf9 | 2016-05-04 14:46:08 -0700 | [diff] [blame] | 43 | |
Madan Jampani | 1007367 | 2016-01-21 19:13:59 -0800 | [diff] [blame] | 44 | import com.google.common.collect.Lists; |
| 45 | import com.google.common.collect.Maps; |
| 46 | import com.google.common.collect.Sets; |
| 47 | |
| 48 | /** |
| 49 | * {@link AsyncConsistentMap} that has its entries partitioned horizontally across |
| 50 | * several {@link AsyncConsistentMap maps}. |
| 51 | * |
| 52 | * @param <K> key type |
| 53 | * @param <V> value type |
| 54 | */ |
| 55 | public class PartitionedAsyncConsistentMap<K, V> implements AsyncConsistentMap<K, V> { |
| 56 | |
| 57 | private final String name; |
| 58 | private final TreeMap<PartitionId, AsyncConsistentMap<K, V>> partitions = Maps.newTreeMap(); |
| 59 | private final Hasher<K> keyHasher; |
| 60 | |
| 61 | public PartitionedAsyncConsistentMap(String name, |
| 62 | Map<PartitionId, AsyncConsistentMap<K, V>> partitions, |
| 63 | Hasher<K> keyHasher) { |
| 64 | this.name = name; |
| 65 | this.partitions.putAll(checkNotNull(partitions)); |
| 66 | this.keyHasher = checkNotNull(keyHasher); |
| 67 | } |
| 68 | |
| 69 | @Override |
| 70 | public String name() { |
| 71 | return name; |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | public CompletableFuture<Integer> size() { |
| 76 | AtomicInteger totalSize = new AtomicInteger(0); |
| 77 | return CompletableFuture.allOf(getMaps() |
| 78 | .stream() |
| 79 | .map(map -> map.size().thenAccept(totalSize::addAndGet)) |
| 80 | .toArray(CompletableFuture[]::new)) |
| 81 | .thenApply(v -> totalSize.get()); |
| 82 | } |
| 83 | |
| 84 | @Override |
| 85 | public CompletableFuture<Boolean> isEmpty() { |
| 86 | return size().thenApply(size -> size == 0); |
| 87 | } |
| 88 | |
| 89 | @Override |
| 90 | public CompletableFuture<Boolean> containsKey(K key) { |
| 91 | return getMap(key).containsKey(key); |
| 92 | } |
| 93 | |
| 94 | @Override |
| 95 | public CompletableFuture<Boolean> containsValue(V value) { |
| 96 | AtomicBoolean contains = new AtomicBoolean(false); |
| 97 | return CompletableFuture.allOf(getMaps().stream() |
| 98 | .map(map -> map.containsValue(value) |
| 99 | .thenAccept(v -> contains.set(contains.get() || v))) |
| 100 | .toArray(CompletableFuture[]::new)) |
| 101 | .thenApply(v -> contains.get()); |
| 102 | } |
| 103 | @Override |
| 104 | public CompletableFuture<Versioned<V>> get(K key) { |
| 105 | return getMap(key).get(key); |
| 106 | } |
| 107 | |
| 108 | @Override |
| 109 | public CompletableFuture<Versioned<V>> computeIf(K key, |
| 110 | Predicate<? super V> condition, |
| 111 | BiFunction<? super K, ? super V, ? extends V> remappingFunction) { |
| 112 | return getMap(key).computeIf(key, condition, remappingFunction); |
| 113 | } |
| 114 | |
| 115 | @Override |
| 116 | public CompletableFuture<Versioned<V>> put(K key, V value) { |
| 117 | return getMap(key).put(key, value); |
| 118 | } |
| 119 | |
| 120 | @Override |
| 121 | public CompletableFuture<Versioned<V>> putAndGet(K key, V value) { |
| 122 | return getMap(key).putAndGet(key, value); |
| 123 | } |
| 124 | |
| 125 | @Override |
| 126 | public CompletableFuture<Versioned<V>> remove(K key) { |
| 127 | return getMap(key).remove(key); |
| 128 | } |
| 129 | |
| 130 | @Override |
| 131 | public CompletableFuture<Void> clear() { |
| 132 | return CompletableFuture.allOf(getMaps().stream() |
| 133 | .map(map -> map.clear()) |
| 134 | .toArray(CompletableFuture[]::new)); |
| 135 | } |
| 136 | |
| 137 | @Override |
| 138 | public CompletableFuture<Set<K>> keySet() { |
| 139 | Set<K> allKeys = Sets.newConcurrentHashSet(); |
| 140 | return CompletableFuture.allOf(getMaps().stream() |
| 141 | .map(map -> map.keySet().thenAccept(allKeys::addAll)) |
| 142 | .toArray(CompletableFuture[]::new)) |
| 143 | .thenApply(v -> allKeys); |
| 144 | } |
| 145 | |
| 146 | @Override |
| 147 | public CompletableFuture<Collection<Versioned<V>>> values() { |
| 148 | List<Versioned<V>> allValues = Lists.newCopyOnWriteArrayList(); |
| 149 | return CompletableFuture.allOf(getMaps().stream() |
| 150 | .map(map -> map.values().thenAccept(allValues::addAll)) |
| 151 | .toArray(CompletableFuture[]::new)) |
| 152 | .thenApply(v -> allValues); |
| 153 | } |
| 154 | |
| 155 | @Override |
| 156 | public CompletableFuture<Set<Entry<K, Versioned<V>>>> entrySet() { |
| 157 | Set<Entry<K, Versioned<V>>> allEntries = Sets.newConcurrentHashSet(); |
| 158 | return CompletableFuture.allOf(getMaps().stream() |
| 159 | .map(map -> map.entrySet().thenAccept(allEntries::addAll)) |
| 160 | .toArray(CompletableFuture[]::new)) |
| 161 | .thenApply(v -> allEntries); |
| 162 | } |
| 163 | |
| 164 | @Override |
| 165 | public CompletableFuture<Versioned<V>> putIfAbsent(K key, V value) { |
| 166 | return getMap(key).putIfAbsent(key, value); |
| 167 | } |
| 168 | |
| 169 | @Override |
| 170 | public CompletableFuture<Boolean> remove(K key, V value) { |
| 171 | return getMap(key).remove(key, value); |
| 172 | } |
| 173 | |
| 174 | @Override |
| 175 | public CompletableFuture<Boolean> remove(K key, long version) { |
| 176 | return getMap(key).remove(key, version); |
| 177 | } |
| 178 | |
| 179 | @Override |
| 180 | public CompletableFuture<Versioned<V>> replace(K key, V value) { |
| 181 | return getMap(key).replace(key, value); |
| 182 | } |
| 183 | |
| 184 | @Override |
| 185 | public CompletableFuture<Boolean> replace(K key, V oldValue, V newValue) { |
| 186 | return getMap(key).replace(key, oldValue, newValue); |
| 187 | } |
| 188 | |
| 189 | @Override |
| 190 | public CompletableFuture<Boolean> replace(K key, long oldVersion, V newValue) { |
| 191 | return getMap(key).replace(key, oldVersion, newValue); |
| 192 | } |
| 193 | |
| 194 | @Override |
Madan Jampani | 0463cf9 | 2016-05-04 14:46:08 -0700 | [diff] [blame] | 195 | public CompletableFuture<Void> addListener(MapEventListener<K, V> listener, Executor executor) { |
Madan Jampani | 1007367 | 2016-01-21 19:13:59 -0800 | [diff] [blame] | 196 | return CompletableFuture.allOf(getMaps().stream() |
Madan Jampani | 0463cf9 | 2016-05-04 14:46:08 -0700 | [diff] [blame] | 197 | .map(map -> map.addListener(listener, executor)) |
Madan Jampani | 1007367 | 2016-01-21 19:13:59 -0800 | [diff] [blame] | 198 | .toArray(CompletableFuture[]::new)); |
| 199 | } |
| 200 | |
| 201 | @Override |
| 202 | public CompletableFuture<Void> removeListener(MapEventListener<K, V> listener) { |
| 203 | return CompletableFuture.allOf(getMaps().stream() |
| 204 | .map(map -> map.removeListener(listener)) |
| 205 | .toArray(CompletableFuture[]::new)); |
| 206 | } |
| 207 | |
Madan Jampani | 74da78b | 2016-02-09 21:18:36 -0800 | [diff] [blame] | 208 | @Override |
| 209 | public CompletableFuture<Boolean> prepare(MapTransaction<K, V> transaction) { |
| 210 | |
| 211 | Map<AsyncConsistentMap<K, V>, List<MapUpdate<K, V>>> updatesGroupedByMap = Maps.newIdentityHashMap(); |
| 212 | transaction.updates().forEach(update -> { |
| 213 | AsyncConsistentMap<K, V> map = getMap(update.key()); |
| 214 | updatesGroupedByMap.computeIfAbsent(map, k -> Lists.newLinkedList()).add(update); |
| 215 | }); |
| 216 | Map<AsyncConsistentMap<K, V>, MapTransaction<K, V>> transactionsByMap = |
| 217 | Maps.transformValues(updatesGroupedByMap, |
| 218 | list -> new MapTransaction<>(transaction.transactionId(), list)); |
| 219 | |
| 220 | return Tools.allOf(transactionsByMap.entrySet() |
| 221 | .stream() |
| 222 | .map(e -> e.getKey().prepare(e.getValue())) |
| 223 | .collect(Collectors.toList())) |
| 224 | .thenApply(list -> list.stream().reduce(Boolean::logicalAnd).orElse(true)); |
| 225 | } |
| 226 | |
| 227 | @Override |
| 228 | public CompletableFuture<Void> commit(TransactionId transactionId) { |
| 229 | return CompletableFuture.allOf(getMaps().stream() |
| 230 | .map(e -> e.commit(transactionId)) |
| 231 | .toArray(CompletableFuture[]::new)); |
| 232 | } |
| 233 | |
| 234 | @Override |
| 235 | public CompletableFuture<Void> rollback(TransactionId transactionId) { |
| 236 | return CompletableFuture.allOf(getMaps().stream() |
| 237 | .map(e -> e.rollback(transactionId)) |
| 238 | .toArray(CompletableFuture[]::new)); |
| 239 | } |
| 240 | |
Madan Jampani | 542d9e2 | 2016-04-05 15:39:55 -0700 | [diff] [blame] | 241 | @Override |
| 242 | public CompletableFuture<Boolean> prepareAndCommit(MapTransaction<K, V> transaction) { |
| 243 | Map<AsyncConsistentMap<K, V>, List<MapUpdate<K, V>>> updatesGroupedByMap = Maps.newIdentityHashMap(); |
| 244 | transaction.updates().forEach(update -> { |
| 245 | AsyncConsistentMap<K, V> map = getMap(update.key()); |
| 246 | updatesGroupedByMap.computeIfAbsent(map, k -> Lists.newLinkedList()).add(update); |
| 247 | }); |
| 248 | Map<AsyncConsistentMap<K, V>, MapTransaction<K, V>> transactionsByMap = |
| 249 | Maps.transformValues(updatesGroupedByMap, |
| 250 | list -> new MapTransaction<>(transaction.transactionId(), list)); |
| 251 | |
| 252 | return Tools.allOf(transactionsByMap.entrySet() |
| 253 | .stream() |
| 254 | .map(e -> e.getKey().prepareAndCommit(e.getValue())) |
| 255 | .collect(Collectors.toList())) |
| 256 | .thenApply(list -> list.stream().reduce(Boolean::logicalAnd).orElse(true)); |
| 257 | } |
| 258 | |
Madan Jampani | 1d3b617 | 2016-04-28 13:22:57 -0700 | [diff] [blame] | 259 | @Override |
| 260 | public void addStatusChangeListener(Consumer<Status> listener) { |
| 261 | partitions.values().forEach(map -> map.addStatusChangeListener(listener)); |
| 262 | } |
| 263 | |
| 264 | @Override |
| 265 | public void removeStatusChangeListener(Consumer<Status> listener) { |
| 266 | partitions.values().forEach(map -> map.removeStatusChangeListener(listener)); |
| 267 | } |
| 268 | |
| 269 | @Override |
| 270 | public Collection<Consumer<Status>> statusChangeListeners() { |
| 271 | throw new UnsupportedOperationException(); |
| 272 | } |
| 273 | |
Madan Jampani | 1007367 | 2016-01-21 19:13:59 -0800 | [diff] [blame] | 274 | /** |
| 275 | * Returns the map (partition) to which the specified key maps. |
| 276 | * @param key key |
| 277 | * @return AsyncConsistentMap to which key maps |
| 278 | */ |
| 279 | private AsyncConsistentMap<K, V> getMap(K key) { |
| 280 | return partitions.get(keyHasher.hash(key)); |
| 281 | } |
| 282 | |
| 283 | /** |
| 284 | * Returns all the constituent maps. |
| 285 | * @return collection of maps. |
| 286 | */ |
| 287 | private Collection<AsyncConsistentMap<K, V>> getMaps() { |
| 288 | return partitions.values(); |
| 289 | } |
| 290 | } |