| /* |
| * Copyright 2017-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 com.google.common.base.Throwables; |
| import org.onosproject.store.service.AsyncDocumentTree; |
| import org.onosproject.store.service.ConsistentMapException; |
| import org.onosproject.store.service.DocumentException; |
| import org.onosproject.store.service.DocumentPath; |
| import org.onosproject.store.service.DocumentTree; |
| import org.onosproject.store.service.DocumentTreeListener; |
| import org.onosproject.store.service.Synchronous; |
| import org.onosproject.store.service.Versioned; |
| |
| import java.util.Map; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| /** |
| * Synchronous wrapper for a {@link AsyncDocumentTree}. All operations are |
| * made by making the equivalent calls to a backing {@link AsyncDocumentTree} |
| * then blocking until the operations complete or timeout. |
| * |
| * @param <V> the type of the values |
| */ |
| public class DefaultDocumentTree<V> extends Synchronous<AsyncDocumentTree<V>> implements DocumentTree<V> { |
| |
| private final AsyncDocumentTree<V> backingTree; |
| private final long operationTimeoutMillis; |
| |
| public DefaultDocumentTree(AsyncDocumentTree<V> backingTree, long operationTimeoutMillis) { |
| super(backingTree); |
| this.backingTree = backingTree; |
| this.operationTimeoutMillis = operationTimeoutMillis; |
| } |
| |
| @Override |
| public DocumentPath root() { |
| return backingTree.root(); |
| } |
| |
| @Override |
| public Map<String, Versioned<V>> getChildren(DocumentPath path) { |
| return complete(backingTree.getChildren(path)); |
| } |
| |
| @Override |
| public Versioned<V> get(DocumentPath path) { |
| return complete(backingTree.get(path)); |
| } |
| |
| @Override |
| public Versioned<V> set(DocumentPath path, V value) { |
| return complete(backingTree.set(path, value)); |
| } |
| |
| @Override |
| public boolean create(DocumentPath path, V value) { |
| return complete(backingTree.create(path, value)); |
| } |
| |
| @Override |
| public boolean createRecursive(DocumentPath path, V value) { |
| return complete(backingTree.createRecursive(path, value)); |
| } |
| |
| @Override |
| public boolean replace(DocumentPath path, V newValue, long version) { |
| return complete(backingTree.replace(path, newValue, version)); |
| } |
| |
| @Override |
| public boolean replace(DocumentPath path, V newValue, V currentValue) { |
| return complete(backingTree.replace(path, newValue, currentValue)); |
| } |
| |
| @Override |
| public Versioned<V> removeNode(DocumentPath path) { |
| return complete(backingTree.removeNode(path)); |
| } |
| |
| @Override |
| public void addListener(DocumentPath path, DocumentTreeListener<V> listener) { |
| complete(backingTree.addListener(path, listener)); |
| } |
| |
| @Override |
| public void removeListener(DocumentTreeListener<V> listener) { |
| complete(backingTree.removeListener(listener)); |
| } |
| |
| @Override |
| public void addListener(DocumentTreeListener<V> listener) { |
| complete(backingTree.addListener(listener)); |
| } |
| |
| private <T> T complete(CompletableFuture<T> future) { |
| try { |
| return future.get(operationTimeoutMillis, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new DocumentException.Interrupted(); |
| } catch (TimeoutException e) { |
| throw new DocumentException.Timeout(name()); |
| } catch (ExecutionException e) { |
| Throwables.throwIfUnchecked(e.getCause()); |
| throw new ConsistentMapException(e.getCause()); |
| } |
| } |
| } |