| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.xml.security.test.dom.utils; |
| |
| import org.apache.xml.security.utils.WeakObjectPool; |
| import org.apache.xml.security.utils.XMLUtils; |
| import org.junit.Test; |
| |
| import javax.xml.parsers.DocumentBuilder; |
| import java.lang.ref.WeakReference; |
| import java.lang.reflect.Field; |
| import java.util.Iterator; |
| import java.util.concurrent.*; |
| |
| import static org.junit.Assert.*; |
| |
| public class DocumentBuilderPoolingTest { |
| |
| private static final String DOCUMENTBUILDERPROXY_CLASSNAME = |
| "org.apache.xml.security.utils.XMLUtils$DocumentBuilderProxy"; |
| |
| @Test |
| public void testEquals() throws Exception { |
| DocumentBuilder documentBuilder = XMLUtils.createDocumentBuilder(true); |
| assertEquals(documentBuilder, documentBuilder); |
| } |
| |
| @Test |
| public void testGetValidatingDocumentBuilder() throws Exception { |
| DocumentBuilder documentBuilder = XMLUtils.createDocumentBuilder(true); |
| assertTrue(documentBuilder.isValidating()); |
| } |
| |
| @Test |
| public void testGetNonValidatingDocumentBuilder() throws Exception { |
| DocumentBuilder documentBuilder = XMLUtils.createDocumentBuilder(false); |
| assertFalse(documentBuilder.isValidating()); |
| } |
| |
| @Test |
| public void testGetValidatingAndAllowDocTypeDeclarationsDocumentBuilder() throws Exception { |
| DocumentBuilder documentBuilder = XMLUtils.createDocumentBuilder(true, false); |
| assertTrue(documentBuilder.isValidating()); |
| assertEquals(documentBuilder.getClass().getName(), DOCUMENTBUILDERPROXY_CLASSNAME); |
| assertAllowDocTypeDeclarations(documentBuilder, false); |
| } |
| |
| @Test |
| public void testGetValidatingAndDisAllowDocTypeDeclarationsDocumentBuilder() throws Exception { |
| DocumentBuilder documentBuilder = XMLUtils.createDocumentBuilder(true, true); |
| assertTrue(documentBuilder.isValidating()); |
| assertEquals(documentBuilder.getClass().getName(), DOCUMENTBUILDERPROXY_CLASSNAME); |
| assertAllowDocTypeDeclarations(documentBuilder, true); |
| } |
| |
| private void assertAllowDocTypeDeclarations(DocumentBuilder documentBuilder, boolean allow) throws Exception { |
| Field field = documentBuilder.getClass().getDeclaredField("disAllowDocTypeDeclarations"); |
| field.setAccessible(true); |
| assertEquals(allow, field.get(documentBuilder)); |
| } |
| |
| @Test |
| public void testNewDocumentBuilderInstances() throws Exception { |
| int count = 4; |
| |
| // get all possible combinations of DocumentBuilders: |
| DocumentBuilder[] documentBuilders = new DocumentBuilder[count]; |
| for (int i = 0; i < count; i++) { |
| documentBuilders[i] = XMLUtils.createDocumentBuilder(i / 2 > 0, i % 2 == 1); |
| } |
| |
| //test that we got always a new instance: |
| for (int i = 0; i < count; i++) { |
| for (int j = i + 1; j < count; j++) { |
| assertNotEquals(documentBuilders[i], documentBuilders[j]); |
| assertNotSame(documentBuilders[i], documentBuilders[j]); |
| } |
| } |
| } |
| |
| @Test |
| public void testRepoolingTwice() throws Exception { |
| DocumentBuilder documentBuilder = XMLUtils.createDocumentBuilder(true); |
| assertTrue(XMLUtils.repoolDocumentBuilder(documentBuilder)); |
| assertFalse("can't repool the same object twice!", XMLUtils.repoolDocumentBuilder(documentBuilder)); |
| } |
| |
| @Test(timeout = 30000) |
| public void testPooling() throws Exception { |
| int nThreads = 8; |
| ExecutorService exec = Executors.newFixedThreadPool(nThreads); |
| Future<?>[] results = new Future[nThreads]; |
| for (int i = 0; i < nThreads - 1; i++) { |
| results[i] = exec.submit(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| while (true) { |
| // retrieve some DocumentBuilders... |
| DocumentBuilder documentBuilders[] = new DocumentBuilder[10]; |
| for (int j = 0; j < documentBuilders.length; j++) { |
| documentBuilders[j] = XMLUtils.createDocumentBuilder(false); |
| assertNotNull(documentBuilders[j]); |
| } |
| // ...then repool them so that another thread may pickup them again |
| for (int j = 0; j < documentBuilders.length; j++) { |
| assertTrue(XMLUtils.repoolDocumentBuilder(documentBuilders[j])); |
| } |
| } |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| }); |
| } |
| // more or less mimic gc |
| results[nThreads - 1] = exec.submit(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| final Field poolField = XMLUtils.class.getDeclaredField("pools"); |
| poolField.setAccessible(true); |
| final WeakObjectPool[] weakObjectPools = (WeakObjectPool[]) poolField.get(null); |
| |
| final Field availableField = WeakObjectPool.class.getDeclaredField("available"); |
| availableField.setAccessible(true); |
| |
| while (true) { |
| final BlockingDeque blockingDeque = (BlockingDeque) availableField.get(weakObjectPools[1]); |
| Iterator iterator = blockingDeque.iterator(); |
| while (iterator.hasNext()) { |
| ((WeakReference) iterator.next()).clear(); |
| } |
| Thread.sleep(200); |
| } |
| } catch (InterruptedException e) { |
| return; |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| }); |
| |
| exec.shutdown(); |
| exec.awaitTermination(5, TimeUnit.SECONDS); |
| for (Future<?> f : results) { |
| if (!f.isDone()) { |
| f.cancel(false); |
| } |
| try { |
| assertNull(f.get(1000, TimeUnit.MILLISECONDS)); |
| } catch (CancellationException ce) { |
| //expected since we did cancel it |
| } catch (TimeoutException e) { |
| fail(f + "didn't cancel after timeout?"); |
| } |
| } |
| } |
| } |