Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Laboratory |
| 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 java.util.Map; |
| 19 | import java.util.concurrent.CompletableFuture; |
| 20 | import java.util.concurrent.Executor; |
| 21 | |
| 22 | import com.google.common.collect.Maps; |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 23 | import org.onosproject.store.service.AsyncAtomicValue; |
| 24 | import org.onosproject.store.service.AtomicValueEventListener; |
| 25 | |
| 26 | /** |
| 27 | * {@link AsyncAtomicValue} that executes asynchronous callbacks on a user provided |
| 28 | * {@link Executor}. |
| 29 | */ |
| 30 | public class ExecutingAsyncAtomicValue<V> extends ExecutingDistributedPrimitive implements AsyncAtomicValue<V> { |
| 31 | private final AsyncAtomicValue<V> delegateValue; |
Jordan Halterman | 046faeb | 2017-05-01 15:10:13 -0700 | [diff] [blame] | 32 | private final Executor orderedExecutor; |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 33 | private final Map<AtomicValueEventListener<V>, AtomicValueEventListener<V>> listenerMap = Maps.newConcurrentMap(); |
| 34 | |
Jordan Halterman | 046faeb | 2017-05-01 15:10:13 -0700 | [diff] [blame] | 35 | public ExecutingAsyncAtomicValue( |
| 36 | AsyncAtomicValue<V> delegateValue, Executor orderedExecutor, Executor threadPoolExecutor) { |
| 37 | super(delegateValue, orderedExecutor, threadPoolExecutor); |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 38 | this.delegateValue = delegateValue; |
Jordan Halterman | 046faeb | 2017-05-01 15:10:13 -0700 | [diff] [blame] | 39 | this.orderedExecutor = orderedExecutor; |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 40 | } |
| 41 | |
| 42 | @Override |
| 43 | public CompletableFuture<Boolean> compareAndSet(V expect, V update) { |
Jordan Halterman | 046faeb | 2017-05-01 15:10:13 -0700 | [diff] [blame] | 44 | return asyncFuture(delegateValue.compareAndSet(expect, update)); |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 45 | } |
| 46 | |
| 47 | @Override |
| 48 | public CompletableFuture<V> get() { |
Jordan Halterman | 046faeb | 2017-05-01 15:10:13 -0700 | [diff] [blame] | 49 | return asyncFuture(delegateValue.get()); |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 50 | } |
| 51 | |
| 52 | @Override |
| 53 | public CompletableFuture<V> getAndSet(V value) { |
Jordan Halterman | 046faeb | 2017-05-01 15:10:13 -0700 | [diff] [blame] | 54 | return asyncFuture(delegateValue.getAndSet(value)); |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 55 | } |
| 56 | |
| 57 | @Override |
| 58 | public CompletableFuture<Void> set(V value) { |
Jordan Halterman | 046faeb | 2017-05-01 15:10:13 -0700 | [diff] [blame] | 59 | return asyncFuture(delegateValue.set(value)); |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | @Override |
| 63 | public CompletableFuture<Void> addListener(AtomicValueEventListener<V> listener) { |
Jordan Halterman | 046faeb | 2017-05-01 15:10:13 -0700 | [diff] [blame] | 64 | AtomicValueEventListener<V> wrappedListener = e -> orderedExecutor.execute(() -> listener.event(e)); |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 65 | listenerMap.put(listener, wrappedListener); |
Jordan Halterman | 046faeb | 2017-05-01 15:10:13 -0700 | [diff] [blame] | 66 | return asyncFuture(delegateValue.addListener(wrappedListener)); |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | @Override |
| 70 | public CompletableFuture<Void> removeListener(AtomicValueEventListener<V> listener) { |
| 71 | AtomicValueEventListener<V> wrappedListener = listenerMap.remove(listener); |
| 72 | if (wrappedListener != null) { |
Jordan Halterman | 046faeb | 2017-05-01 15:10:13 -0700 | [diff] [blame] | 73 | return asyncFuture(delegateValue.removeListener(wrappedListener)); |
Jordan Halterman | 9bdc24f | 2017-04-19 23:45:12 -0700 | [diff] [blame] | 74 | } |
| 75 | return CompletableFuture.completedFuture(null); |
| 76 | } |
| 77 | } |