| /* |
| * Copyright 2016-present Open Networking Laboratory |
| * |
| * 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 java.util.Collection; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Set; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.Executor; |
| import java.util.function.BiFunction; |
| import java.util.function.Consumer; |
| import java.util.function.Function; |
| import java.util.function.Predicate; |
| import java.util.stream.Collectors; |
| |
| import org.onlab.util.Tools; |
| import org.onosproject.store.primitives.MapUpdate; |
| import org.onosproject.store.primitives.TransactionId; |
| import org.onosproject.store.service.AsyncConsistentMap; |
| 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 com.google.common.collect.Maps; |
| |
| /** |
| * An {@code AsyncConsistentMap} that maps its operations to operations on a |
| * differently typed {@code AsyncConsistentMap} by transcoding operation inputs and outputs. |
| * |
| * @param <K2> key type of other map |
| * @param <V2> value type of other map |
| * @param <K1> key type of this map |
| * @param <V1> value type of this map |
| */ |
| public class TranscodingAsyncConsistentMap<K1, V1, K2, V2> implements AsyncConsistentMap<K1, V1> { |
| |
| private final AsyncConsistentMap<K2, V2> backingMap; |
| private final Function<K1, K2> keyEncoder; |
| private final Function<K2, K1> keyDecoder; |
| private final Function<V2, V1> valueDecoder; |
| private final Function<V1, V2> valueEncoder; |
| private final Function<Versioned<V2>, Versioned<V1>> versionedValueTransform; |
| private final Map<MapEventListener<K1, V1>, InternalBackingMapEventListener> listeners = |
| Maps.newIdentityHashMap(); |
| |
| public TranscodingAsyncConsistentMap(AsyncConsistentMap<K2, V2> backingMap, |
| Function<K1, K2> keyEncoder, |
| Function<K2, K1> keyDecoder, |
| Function<V1, V2> valueEncoder, |
| Function<V2, V1> valueDecoder) { |
| this.backingMap = backingMap; |
| this.keyEncoder = k -> k == null ? null : keyEncoder.apply(k); |
| this.keyDecoder = k -> k == null ? null : keyDecoder.apply(k); |
| 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 String name() { |
| return backingMap.name(); |
| } |
| |
| @Override |
| public CompletableFuture<Integer> size() { |
| return backingMap.size(); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> containsKey(K1 key) { |
| try { |
| return backingMap.containsKey(keyEncoder.apply(key)); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> containsValue(V1 value) { |
| try { |
| return backingMap.containsValue(valueEncoder.apply(value)); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> get(K1 key) { |
| try { |
| return backingMap.get(keyEncoder.apply(key)).thenApply(versionedValueTransform); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> getOrDefault(K1 key, V1 defaultValue) { |
| try { |
| return backingMap.getOrDefault(keyEncoder.apply(key), valueEncoder.apply(defaultValue)) |
| .thenApply(versionedValueTransform); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> computeIf(K1 key, |
| Predicate<? super V1> condition, |
| BiFunction<? super K1, ? super V1, ? extends V1> remappingFunction) { |
| try { |
| return backingMap.computeIf(keyEncoder.apply(key), |
| v -> condition.test(valueDecoder.apply(v)), |
| (k, v) -> valueEncoder.apply(remappingFunction.apply(keyDecoder.apply(k), |
| valueDecoder.apply(v)))) |
| .thenApply(versionedValueTransform); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> put(K1 key, V1 value) { |
| try { |
| return backingMap.put(keyEncoder.apply(key), valueEncoder.apply(value)) |
| .thenApply(versionedValueTransform); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> putAndGet(K1 key, V1 value) { |
| try { |
| return backingMap.putAndGet(keyEncoder.apply(key), valueEncoder.apply(value)) |
| .thenApply(versionedValueTransform); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> remove(K1 key) { |
| try { |
| return backingMap.remove(keyEncoder.apply(key)).thenApply(versionedValueTransform); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Void> clear() { |
| return backingMap.clear(); |
| } |
| |
| @Override |
| public CompletableFuture<Set<K1>> keySet() { |
| return backingMap.keySet() |
| .thenApply(s -> s.stream().map(keyDecoder).collect(Collectors.toSet())); |
| } |
| |
| @Override |
| public CompletableFuture<Collection<Versioned<V1>>> values() { |
| return backingMap.values() |
| .thenApply(c -> c.stream().map(versionedValueTransform).collect(Collectors.toList())); |
| } |
| |
| @Override |
| public CompletableFuture<Set<Entry<K1, Versioned<V1>>>> entrySet() { |
| return backingMap.entrySet() |
| .thenApply(s -> s.stream() |
| .map(e -> Maps.immutableEntry(keyDecoder.apply(e.getKey()), |
| versionedValueTransform.apply(e.getValue()))) |
| .collect(Collectors.toSet())); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> putIfAbsent(K1 key, V1 value) { |
| try { |
| return backingMap.putIfAbsent(keyEncoder.apply(key), valueEncoder.apply(value)) |
| .thenApply(versionedValueTransform); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> remove(K1 key, V1 value) { |
| try { |
| return backingMap.remove(keyEncoder.apply(key), valueEncoder.apply(value)); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> remove(K1 key, long version) { |
| try { |
| return backingMap.remove(keyEncoder.apply(key), version); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V1>> replace(K1 key, V1 value) { |
| try { |
| return backingMap.replace(keyEncoder.apply(key), valueEncoder.apply(value)) |
| .thenApply(versionedValueTransform); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> replace(K1 key, V1 oldValue, V1 newValue) { |
| try { |
| return backingMap.replace(keyEncoder.apply(key), |
| valueEncoder.apply(oldValue), |
| valueEncoder.apply(newValue)); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> replace(K1 key, long oldVersion, V1 newValue) { |
| try { |
| return backingMap.replace(keyEncoder.apply(key), oldVersion, valueEncoder.apply(newValue)); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Void> addListener(MapEventListener<K1, V1> listener, Executor executor) { |
| synchronized (listeners) { |
| InternalBackingMapEventListener backingMapListener = |
| listeners.computeIfAbsent(listener, k -> new InternalBackingMapEventListener(listener)); |
| return backingMap.addListener(backingMapListener, executor); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Void> removeListener(MapEventListener<K1, V1> listener) { |
| InternalBackingMapEventListener backingMapListener = listeners.remove(listener); |
| if (backingMapListener != null) { |
| return backingMap.removeListener(backingMapListener); |
| } else { |
| return CompletableFuture.completedFuture(null); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Version> begin(TransactionId transactionId) { |
| try { |
| return backingMap.begin(transactionId); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> prepare(TransactionLog<MapUpdate<K1, V1>> transactionLog) { |
| try { |
| return backingMap.prepare(transactionLog.map(record -> record.map(keyEncoder, valueEncoder))); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> prepareAndCommit(TransactionLog<MapUpdate<K1, V1>> transactionLog) { |
| try { |
| return backingMap.prepareAndCommit(transactionLog.map(record -> record.map(keyEncoder, valueEncoder))); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Void> commit(TransactionId transactionId) { |
| try { |
| return backingMap.commit(transactionId); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public CompletableFuture<Void> rollback(TransactionId transactionId) { |
| try { |
| return backingMap.rollback(transactionId); |
| } catch (Exception e) { |
| return Tools.exceptionalFuture(e); |
| } |
| } |
| |
| @Override |
| public void addStatusChangeListener(Consumer<Status> listener) { |
| backingMap.addStatusChangeListener(listener); |
| } |
| |
| @Override |
| public void removeStatusChangeListener(Consumer<Status> listener) { |
| backingMap.removeStatusChangeListener(listener); |
| } |
| |
| @Override |
| public Collection<Consumer<Status>> statusChangeListeners() { |
| return backingMap.statusChangeListeners(); |
| } |
| |
| private class InternalBackingMapEventListener implements MapEventListener<K2, V2> { |
| |
| private final MapEventListener<K1, V1> listener; |
| |
| InternalBackingMapEventListener(MapEventListener<K1, V1> listener) { |
| this.listener = listener; |
| } |
| |
| @Override |
| public void event(MapEvent<K2, V2> event) { |
| listener.event(new MapEvent<K1, V1>(event.name(), |
| keyDecoder.apply(event.key()), |
| event.newValue() != null ? event.newValue().map(valueDecoder) : null, |
| event.oldValue() != null ? event.oldValue().map(valueDecoder) : null)); |
| } |
| } |
| } |