| /* |
| * Copyright 2016-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.store.primitives; |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| import java.util.function.BiFunction; |
| import java.util.function.Consumer; |
| import java.util.function.Function; |
| import java.util.function.Predicate; |
| |
| import org.onlab.util.Tools; |
| import org.onosproject.store.service.AsyncConsistentMap; |
| import org.onosproject.store.service.ConsistentMap; |
| import org.onosproject.store.service.ConsistentMapException; |
| import org.onosproject.store.service.ConsistentMapException.ConcurrentModification; |
| import org.onosproject.store.service.MapEventListener; |
| import org.onosproject.store.service.Synchronous; |
| import org.onosproject.store.service.Versioned; |
| |
| import com.google.common.base.Throwables; |
| |
| /** |
| * Default implementation of {@code ConsistentMap}. |
| * |
| * @param <K> type of key. |
| * @param <V> type of value. |
| */ |
| public class DefaultConsistentMap<K, V> extends Synchronous<AsyncConsistentMap<K, V>> implements ConsistentMap<K, V> { |
| |
| private static final int MAX_DELAY_BETWEEN_RETRY_MILLS = 50; |
| private final AsyncConsistentMap<K, V> asyncMap; |
| private final long operationTimeoutMillis; |
| private Map<K, V> javaMap; |
| |
| public DefaultConsistentMap(AsyncConsistentMap<K, V> asyncMap, long operationTimeoutMillis) { |
| super(asyncMap); |
| this.asyncMap = asyncMap; |
| this.operationTimeoutMillis = operationTimeoutMillis; |
| } |
| |
| @Override |
| public int size() { |
| return complete(asyncMap.size()); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return complete(asyncMap.isEmpty()); |
| } |
| |
| @Override |
| public boolean containsKey(K key) { |
| return complete(asyncMap.containsKey(key)); |
| } |
| |
| @Override |
| public boolean containsValue(V value) { |
| return complete(asyncMap.containsValue(value)); |
| } |
| |
| @Override |
| public Versioned<V> get(K key) { |
| return complete(asyncMap.get(key)); |
| } |
| |
| @Override |
| public Versioned<V> getOrDefault(K key, V defaultValue) { |
| return complete(asyncMap.getOrDefault(key, defaultValue)); |
| } |
| |
| @Override |
| public Versioned<V> computeIfAbsent(K key, |
| Function<? super K, ? extends V> mappingFunction) { |
| return computeIf(key, Objects::isNull, (k, v) -> mappingFunction.apply(k)); |
| } |
| |
| @Override |
| public Versioned<V> computeIfPresent(K key, |
| BiFunction<? super K, ? super V, ? extends V> remappingFunction) { |
| return computeIf(key, Objects::nonNull, remappingFunction); |
| } |
| |
| @Override |
| public Versioned<V> compute(K key, |
| BiFunction<? super K, ? super V, ? extends V> remappingFunction) { |
| return computeIf(key, v -> true, remappingFunction); |
| } |
| |
| @Override |
| public Versioned<V> computeIf(K key, |
| Predicate<? super V> condition, |
| BiFunction<? super K, ? super V, ? extends V> remappingFunction) { |
| return Tools.retryable(() -> complete(asyncMap.computeIf(key, condition, remappingFunction)), |
| ConcurrentModification.class, |
| Integer.MAX_VALUE, |
| MAX_DELAY_BETWEEN_RETRY_MILLS).get(); |
| } |
| |
| @Override |
| public Versioned<V> put(K key, V value) { |
| return complete(asyncMap.put(key, value)); |
| } |
| |
| @Override |
| public Versioned<V> putAndGet(K key, V value) { |
| return complete(asyncMap.putAndGet(key, value)); |
| } |
| |
| @Override |
| public Versioned<V> remove(K key) { |
| return complete(asyncMap.remove(key)); |
| } |
| |
| @Override |
| public void clear() { |
| complete(asyncMap.clear()); |
| } |
| |
| @Override |
| public Set<K> keySet() { |
| return complete(asyncMap.keySet()); |
| } |
| |
| @Override |
| public Collection<Versioned<V>> values() { |
| return complete(asyncMap.values()); |
| } |
| |
| @Override |
| public Set<Entry<K, Versioned<V>>> entrySet() { |
| return complete(asyncMap.entrySet()); |
| } |
| |
| @Override |
| public Versioned<V> putIfAbsent(K key, V value) { |
| return complete(asyncMap.putIfAbsent(key, value)); |
| } |
| |
| @Override |
| public boolean remove(K key, V value) { |
| return complete(asyncMap.remove(key, value)); |
| } |
| |
| @Override |
| public boolean remove(K key, long version) { |
| return complete(asyncMap.remove(key, version)); |
| } |
| |
| @Override |
| public Versioned<V> replace(K key, V value) { |
| return complete(asyncMap.replace(key, value)); |
| } |
| |
| @Override |
| public boolean replace(K key, V oldValue, V newValue) { |
| return complete(asyncMap.replace(key, oldValue, newValue)); |
| } |
| |
| @Override |
| public boolean replace(K key, long oldVersion, V newValue) { |
| return complete(asyncMap.replace(key, oldVersion, newValue)); |
| } |
| |
| @Override |
| public void addListener(MapEventListener<K, V> listener, Executor executor) { |
| complete(asyncMap.addListener(listener, executor)); |
| } |
| |
| @Override |
| public void removeListener(MapEventListener<K, V> listener) { |
| complete(asyncMap.removeListener(listener)); |
| } |
| |
| @Override |
| public void addStatusChangeListener(Consumer<Status> listener) { |
| asyncMap.addStatusChangeListener(listener); |
| } |
| |
| @Override |
| public void removeStatusChangeListener(Consumer<Status> listener) { |
| asyncMap.removeStatusChangeListener(listener); |
| } |
| |
| @Override |
| public Collection<Consumer<Status>> statusChangeListeners() { |
| return asyncMap.statusChangeListeners(); |
| } |
| |
| @Override |
| public Map<K, V> asJavaMap() { |
| synchronized (this) { |
| if (javaMap == null) { |
| javaMap = new ConsistentMapBackedJavaMap<>(this); |
| } |
| } |
| return javaMap; |
| } |
| |
| @Override |
| public String toString() { |
| return asJavaMap().toString(); |
| } |
| |
| private <T> T complete(CompletableFuture<T> future) { |
| try { |
| return future.get(operationTimeoutMillis, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new ConsistentMapException.Interrupted(); |
| } catch (TimeoutException e) { |
| throw new ConsistentMapException.Timeout(name()); |
| } catch (ExecutionException e) { |
| Throwables.throwIfUnchecked(e.getCause()); |
| throw new ConsistentMapException(e.getCause()); |
| } |
| } |
| } |