| /* |
| * 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; |
| |
| import java.lang.reflect.Array; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| import org.onosproject.store.service.AsyncDistributedSet; |
| import org.onosproject.store.service.DistributedSet; |
| import org.onosproject.store.service.SetEventListener; |
| import org.onosproject.store.service.StorageException; |
| import org.onosproject.store.service.Synchronous; |
| |
| /** |
| * Implementation of {@link DistributedSet} that merely delegates to a {@link AsyncDistributedSet} |
| * and waits for the operation to complete. |
| |
| * @param <E> set element type |
| */ |
| public class DefaultDistributedSet<E> extends Synchronous<AsyncDistributedSet<E>> implements DistributedSet<E> { |
| |
| private final long operationTimeoutMillis; |
| |
| private final AsyncDistributedSet<E> asyncSet; |
| |
| public DefaultDistributedSet(AsyncDistributedSet<E> asyncSet, long operationTimeoutMillis) { |
| super(asyncSet); |
| this.asyncSet = asyncSet; |
| this.operationTimeoutMillis = operationTimeoutMillis; |
| } |
| |
| @Override |
| public int size() { |
| return complete(asyncSet.size()); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return complete(asyncSet.isEmpty()); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public boolean contains(Object o) { |
| return complete(asyncSet.contains((E) o)); |
| } |
| |
| @Override |
| public Iterator<E> iterator() { |
| return complete(asyncSet.getAsImmutableSet()).iterator(); |
| } |
| |
| @Override |
| public Object[] toArray() { |
| return complete(asyncSet.getAsImmutableSet()).stream().toArray(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <T> T[] toArray(T[] a) { |
| // TODO: Optimize this to only allocate a new array if the set size |
| // is larger than the array.length. If the set size is smaller than |
| // the array.length then copy the data into the array and set the |
| // last element in the array to be null. |
| final T[] resizedArray = |
| (T[]) Array.newInstance(a.getClass().getComponentType(), complete(asyncSet.getAsImmutableSet()).size()); |
| return complete(asyncSet.getAsImmutableSet()).toArray(resizedArray); |
| } |
| |
| @Override |
| public boolean add(E e) { |
| return complete(asyncSet.add(e)); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public boolean remove(Object o) { |
| return complete(asyncSet.remove((E) o)); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public boolean containsAll(Collection<?> c) { |
| return complete(asyncSet.containsAll((Collection<? extends E>) c)); |
| } |
| |
| @Override |
| public boolean addAll(Collection<? extends E> c) { |
| return complete(asyncSet.addAll(c)); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public boolean retainAll(Collection<?> c) { |
| return complete(asyncSet.retainAll((Collection<? extends E>) c)); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public boolean removeAll(Collection<?> c) { |
| return complete(asyncSet.removeAll((Collection<? extends E>) c)); |
| } |
| |
| @Override |
| public void clear() { |
| complete(asyncSet.clear()); |
| } |
| |
| @Override |
| public void addListener(SetEventListener<E> listener) { |
| complete(asyncSet.addListener(listener)); |
| } |
| |
| @Override |
| public void removeListener(SetEventListener<E> listener) { |
| complete(asyncSet.removeListener(listener)); |
| } |
| |
| private <T> T complete(CompletableFuture<T> future) { |
| try { |
| return future.get(operationTimeoutMillis, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new StorageException.Interrupted(); |
| } catch (TimeoutException e) { |
| throw new StorageException.Timeout(); |
| } catch (ExecutionException e) { |
| if (e.getCause() instanceof StorageException) { |
| throw (StorageException) e.getCause(); |
| } else { |
| throw new StorageException(e.getCause()); |
| } |
| } |
| } |
| } |