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/*
* Copyright (c) 2018 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.tests.bugzilla;
import org.eclipse.emf.cdo.eresource.CDOResource;
import org.eclipse.emf.cdo.internal.net4j.protocol.CDOClientProtocol;
import org.eclipse.emf.cdo.net4j.CDONet4jSession;
import org.eclipse.emf.cdo.session.CDOSession;
import org.eclipse.emf.cdo.tests.AbstractCDOTest;
import org.eclipse.emf.cdo.tests.model1.Category;
import org.eclipse.emf.cdo.tests.model1.Company;
import org.eclipse.emf.cdo.tests.model1.Product1;
import org.eclipse.emf.cdo.transaction.CDOTransaction;
import org.eclipse.net4j.signal.SignalProtocol;
import org.eclipse.net4j.util.ReflectUtil;
import org.eclipse.net4j.util.io.StringCompressor;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.spi.cdo.CDOSessionProtocol;
import java.util.Collection;
import java.util.Iterator;
/**
* Bug 517225: StringCompressor can create huge memory leak
*
* @author Eike Stepper
*/
public class Bugzilla_517225_Test extends AbstractCDOTest
{
private static final int LEVELS = 3;
private static final int CATEGORIES = 3;
private static final int PRODUCTS = 15;
@SuppressWarnings("unchecked")
public void testStringCompressorLeak() throws Exception
{
// Initialize model.
{
CDOSession session = openSession();
CDOTransaction transaction = session.openTransaction();
CDOResource resource = transaction.createResource(getResourcePath("res"));
Category category = getModel1Factory().createCategory();
category.setName("ROOT");
Company company = getModel1Factory().createCompany();
company.getCategories().add(category);
resource.getContents().add(company);
createModel(category, LEVELS);
transaction.commit();
}
CDONet4jSession session = (CDONet4jSession)openSession();
CDOClientProtocol protocol = (CDOClientProtocol)(CDOSessionProtocol)session.options().getNet4jProtocol();
StringCompressor compressor = (StringCompressor)protocol.getPackageURICompressor();
Collection<Integer> pendingAcknowledgements = (Collection<Integer>)ReflectUtil
.getValue(ReflectUtil.getField(StringCompressor.class, "pendingAcknowledgements"), compressor);
CDOTransaction transaction = session.openTransaction();
CDOResource resource = transaction.getResource(getResourcePath("res"));
for (Iterator<EObject> it = resource.eAllContents(); it.hasNext();)
{
it.next();
}
// Should be 9 with a HashSet instead of 728 with an ArrayList.
assertTrue("pendingAcknowledgements: " + pendingAcknowledgements, pendingAcknowledgements.size() < 10);
sleep(SignalProtocol.COMPRESSED_STRINGS_ACKNOWLEDGE_TIMEOUT + 1000);
session.openView();
pendingAcknowledgements = (Collection<Integer>)ReflectUtil.getValue(ReflectUtil.getField(StringCompressor.class, "pendingAcknowledgements"), compressor);
assertEquals("pendingAcknowledgements: " + pendingAcknowledgements, 0, pendingAcknowledgements.size());
}
private void createModel(Category parent, int levels)
{
EList<Category> categories = parent.getCategories();
for (int i = 0; i < CATEGORIES; i++)
{
Category category = getModel1Factory().createCategory();
category.setName("Category" + levels + "-" + i);
categories.add(category);
}
EList<Product1> products = parent.getProducts();
for (int i = 0; i < PRODUCTS; i++)
{
Product1 product = getModel1Factory().createProduct1();
product.setName("Product" + levels + "-" + i);
products.add(product);
}
if (levels > 0)
{
for (Category category : categories)
{
createModel(category, levels - 1);
}
}
}
}
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