| /* |
| * 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.impl; |
| |
| import com.google.common.collect.Maps; |
| import org.onlab.util.Tools; |
| import org.onosproject.store.primitives.MapUpdate; |
| import org.onosproject.store.primitives.TransactionId; |
| import org.onosproject.store.service.AsyncConsistentTreeMap; |
| import org.onosproject.store.service.MapEvent; |
| import org.onosproject.store.service.MapEventListener; |
| import org.onosproject.store.service.TransactionLog; |
| import org.onosproject.store.service.Version; |
| import org.onosproject.store.service.Versioned; |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.NavigableMap; |
| import java.util.NavigableSet; |
| import java.util.Set; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.Executor; |
| import java.util.function.BiFunction; |
| import java.util.function.Function; |
| import java.util.function.Predicate; |
| import java.util.stream.Collectors; |
| |
| /** |
| * An {@code AsyncConsistentTreeMap} that maps its operations to operations on |
| * a differently typed {@code AsyncConsistentTreeMap} by transcoding operation |
| * inputs and outputs. |
| * |
| * @param <V2> value type of other map |
| * @param <V1> value type of this map |
| */ |
| public class TranscodingAsyncConsistentTreeMap<V1, V2> |
| implements AsyncConsistentTreeMap<V1> { |
| private final AsyncConsistentTreeMap<V2> backingMap; |
| private final Function<V2, V1> valueDecoder; |
| private final Function<V1, V2> valueEncoder; |
| private final Function<Versioned<V2>, Versioned<V1>> |
| versionedValueTransform; |
| private final Map<MapEventListener<String, V1>, |
| TranscodingAsyncConsistentTreeMap.InternalBackingMapEventListener> |
| listeners = Maps.newIdentityHashMap(); |
| |
| public TranscodingAsyncConsistentTreeMap( |
| AsyncConsistentTreeMap<V2> backingMap, |
| Function<V1, V2> valueEncoder, |
| Function<V2, V1> valueDecoder) { |
| this.backingMap = backingMap; |
| this.valueEncoder = v -> v == null ? null : valueEncoder.apply(v); |
| this.valueDecoder = v -> v == null ? null : valueDecoder.apply(v); |
| this.versionedValueTransform = v -> v == null ? null : |
| v.map(valueDecoder); |
| } |
| |
| @Override |
| public CompletableFuture<String> firstKey() { |
| return backingMap.firstKey(); |
| } |
| |
| @Override |
| public CompletableFuture<String> lastKey() { |
| return backingMap.lastKey(); |
| } |
| |
| @Override |
| public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| ceilingEntry(String key) { |
| return backingMap.ceilingEntry(key) |
| .thenApply( |
| entry -> |
| Maps.immutableEntry( |
| entry.getKey(), |
| versionedValueTransform |
| .apply(entry.getValue()))); |
| } |
| |
| @Override |
| public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| floorEntry(String key) { |
| return backingMap.floorEntry(key) |
| .thenApply( |
| entry -> |
| Maps.immutableEntry( |
| entry.getKey(), |
| versionedValueTransform |
| .apply(entry.getValue()))); |
| } |
| |
| @Override |
| public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| higherEntry(String key) { |
| return backingMap |
| .higherEntry(key) |
| .thenApply(entry -> |
| Maps.immutableEntry( |
| entry.getKey(), |
| versionedValueTransform |
| .apply(entry.getValue()))); |
| } |
| |
| @Override |
| public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| lowerEntry(String key) { |
| return backingMap.lowerEntry(key).thenApply( |
| entry -> |
| Maps.immutableEntry( |
| entry.getKey(), |
| versionedValueTransform |
| .apply(entry.getValue()))); |
| } |
| |
| @Override |
| public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| firstEntry() { |
| return backingMap.firstEntry() |
| .thenApply(entry -> |
| Maps.immutableEntry( |
| entry.getKey(), |
| versionedValueTransform |
| .apply(entry.getValue()))); |
| } |
| |
| @Override |
| public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| lastEntry() { |
| return backingMap.lastEntry() |
| .thenApply( |
| entry -> Maps.immutableEntry( |
| entry.getKey(), |
| versionedValueTransform |
| .apply(entry.getValue()))); |
| } |
| |
| @Override |
| public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| pollFirstEntry() { |
| return backingMap.pollFirstEntry() |
| .thenApply( |
| entry -> Maps.immutableEntry( |
| entry.getKey(), |
| versionedValueTransform |
| .apply(entry.getValue()))); |
| } |
| |
| @Override |
| public CompletableFuture<Map.Entry<String, Versioned<V1>>> |
| pollLastEntry() { |
| return backingMap.pollLastEntry() |
| .thenApply(entry -> Maps.immutableEntry( |
| entry.getKey(), |
| versionedValueTransform.apply(entry.getValue()))); |
| } |
| |
| @Override |
| public CompletableFuture<String> lowerKey(String key) { |
| return backingMap.lowerKey(key); |
| } |
| |
| @Override |
| public CompletableFuture<String> floorKey(String key) { |
| return backingMap.floorKey(key); |
| } |
| |
| @Override |
| public CompletableFuture<String> ceilingKey(String key) { |
| return backingMap.ceilingKey(key); |
| } |
| |
| @Override |
| public CompletableFuture<String> higherKey(String key) { |
| return backingMap.higherKey(key); |
| } |
| |
| @Override |
| public CompletableFuture<NavigableSet<String>> navigableKeySet() { |
| return backingMap.navigableKeySet(); |
| } |
| |
| @Override |
| public CompletableFuture<NavigableMap<String, V1>> subMap( |
| String upperKey, |
| String lowerKey, |
| boolean inclusiveUpper, |
| boolean inclusiveLower) { |
| throw new UnsupportedOperationException("This operation is not yet" + |
| "supported."); |
| } |
| |
| @Override |
| public String name() { |
| return backingMap.name(); |
| } |
| |
| @Override |
| public CompletableFuture<Integer> size() { |
| return backingMap.size(); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> containsKey(String key) { |
| return backingMap.containsKey(key); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> containsValue(V1 value) { |
| return backingMap.containsValue(valueEncoder.apply(value)); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> get(String key) { |
| return backingMap.get(key).thenApply(versionedValueTransform); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> getOrDefault(String key, V1 defaultValue) { |
| return backingMap.getOrDefault(key, valueEncoder.apply(defaultValue)).thenApply(versionedValueTransform); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> computeIf( |
| String key, Predicate<? super V1> condition, |
| BiFunction<? super String, ? super V1, ? extends V1> |
| remappingFunction) { |
| try { |
| return backingMap |
| .computeIf( |
| key, |
| v -> condition.test(valueDecoder.apply(v)), |
| (k, v) -> valueEncoder |
| .apply( |
| remappingFunction.apply( |
| key, |
| valueDecoder.apply(v)))) |
| .thenApply(versionedValueTransform); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> put(String key, V1 value) { |
| return backingMap.put(key, valueEncoder.apply(value)) |
| .thenApply(versionedValueTransform); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> putAndGet(String key, V1 value) { |
| return backingMap.putAndGet(key, valueEncoder.apply(value)) |
| .thenApply(versionedValueTransform); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> remove(String key) { |
| return backingMap.remove(key).thenApply(versionedValueTransform); |
| } |
| |
| @Override |
| public CompletableFuture<Void> clear() { |
| return backingMap.clear(); |
| } |
| |
| @Override |
| public CompletableFuture<Set<String>> keySet() { |
| return backingMap.keySet(); |
| } |
| |
| @Override |
| public CompletableFuture<Collection<Versioned<V1>>> values() { |
| return backingMap.values().thenApply(valueSet -> valueSet.stream() |
| .map(versionedValueTransform).collect(Collectors.toSet())); |
| } |
| |
| @Override |
| public CompletableFuture<Set<Map.Entry<String, Versioned<V1>>>> |
| entrySet() { |
| return backingMap.entrySet() |
| .thenApply( |
| entries -> entries |
| .stream() |
| .map(entry -> |
| Maps.immutableEntry( |
| entry.getKey(), |
| versionedValueTransform |
| .apply(entry.getValue()) |
| )) |
| .collect(Collectors.toSet())); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> putIfAbsent(String key, V1 value) { |
| return backingMap.putIfAbsent(key, valueEncoder.apply(value)) |
| .thenApply(versionedValueTransform); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> remove(String key, V1 value) { |
| return backingMap.remove(key, valueEncoder.apply(value)); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> remove(String key, long version) { |
| return backingMap.remove(key, version); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> replace(String key, V1 value) { |
| return backingMap.replace(key, valueEncoder.apply(value)) |
| .thenApply(versionedValueTransform); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> replace(String key, V1 oldValue, |
| V1 newValue) { |
| return backingMap.replace(key, valueEncoder.apply(oldValue), |
| valueEncoder.apply(newValue)); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> replace(String key, long oldVersion, |
| V1 newValue) { |
| return backingMap.replace(key, oldVersion, |
| valueEncoder.apply(newValue)); |
| } |
| |
| @Override |
| public CompletableFuture<Void> addListener( |
| MapEventListener<String, V1> listener, |
| Executor executor) { |
| InternalBackingMapEventListener backingMapEventListener = |
| listeners.computeIfAbsent( |
| listener, |
| k -> new InternalBackingMapEventListener(listener)); |
| return backingMap.addListener(backingMapEventListener, executor); |
| } |
| |
| @Override |
| public CompletableFuture<Void> removeListener( |
| MapEventListener<String, V1> listener) { |
| InternalBackingMapEventListener backingMapEventListener = |
| listeners.remove(listener); |
| if (backingMapEventListener == null) { |
| return CompletableFuture.completedFuture(null); |
| } else { |
| return backingMap.removeListener(backingMapEventListener); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Version> begin(TransactionId transactionId) { |
| throw new UnsupportedOperationException("This operation is not yet supported."); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> prepare(TransactionLog<MapUpdate<String, V1>> transactionLog) { |
| throw new UnsupportedOperationException("This operation is not yet supported."); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> prepareAndCommit(TransactionLog<MapUpdate<String, V1>> transactionLog) { |
| throw new UnsupportedOperationException("This operation is not yet supported."); |
| } |
| |
| @Override |
| public CompletableFuture<Void> commit(TransactionId transactionId) { |
| throw new UnsupportedOperationException("This operation is not yet supported."); |
| } |
| |
| @Override |
| public CompletableFuture<Void> rollback(TransactionId transactionId) { |
| throw new UnsupportedOperationException("This operation is not yet supported."); |
| } |
| |
| private class InternalBackingMapEventListener |
| implements MapEventListener<String, V2> { |
| |
| private final MapEventListener<String, V1> listener; |
| |
| InternalBackingMapEventListener( |
| MapEventListener<String, V1> listener) { |
| this.listener = listener; |
| } |
| |
| @Override |
| public void event(MapEvent<String, V2> event) { |
| listener.event(new MapEvent<String, V1>( |
| event.type(), |
| event.name(), |
| event.key(), |
| event.newValue() != null ? |
| event.newValue().map(valueDecoder) : null, |
| event.oldValue() != null ? |
| event.oldValue().map(valueDecoder) : null)); |
| } |
| } |
| } |