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/*******************************************************************************
* Copyright (c) 2011 IBM Corporation and others
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.coordinator.tests;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import org.eclipse.equinox.compendium.tests.Activator;
import org.junit.Before;
import org.junit.Test;
import org.osgi.service.coordinator.*;
/*
* Ensures the Coordinator implementation honors a specified maximum timeout
* for coordinations.
*
* https://bugs.eclipse.org/bugs/show_bug.cgi?id=362137
*/
public class CoordinationMaxTimeoutTest extends CoordinatorTest {
private static final long DEVIATION = 500;
private static final String PROPERTY_NAME = "org.eclipse.equinox.coordinator.timeout"; //$NON-NLS-1$
private static final long TIMEOUT = 5000;
@Test
public void testMaxTimeoutWithNoTimeout() throws Exception {
long start = System.currentTimeMillis();
Coordination c = coordinator.create("c", 0); //$NON-NLS-1$
try {
assertTimeout(start, TIMEOUT, c);
c.join(10000);
assertTerminated(c);
assertTimeoutDuration(start, TIMEOUT);
} finally {
try {
c.end();
} catch (CoordinationException e) {
// noop
}
}
}
@Test
public void testMaxTimeoutWithGreaterTimeout() throws Exception {
long start = System.currentTimeMillis();
Coordination c = coordinator.create("c", 10000); //$NON-NLS-1$
try {
assertTimeout(start, TIMEOUT, c);
c.join(10000);
assertTerminated(c);
assertTimeoutDuration(start, TIMEOUT);
} finally {
try {
c.end();
} catch (CoordinationException e) {
// noop
}
}
}
@Test
public void testMaxTimeoutWithLesserTimeout() throws Exception {
long start = System.currentTimeMillis();
long timeout = 2000;
Coordination c = coordinator.create("c", timeout); //$NON-NLS-1$
try {
assertTimeout(start, timeout, c);
c.join(5000);
assertTerminated(c);
assertTimeoutDuration(start, timeout);
} finally {
try {
c.end();
} catch (CoordinationException e) {
// noop
}
}
}
@Test
public void testExtendTimeoutWhenMaxTimeoutAlreadyReached() throws Exception {
long start = System.currentTimeMillis();
Coordination c = coordinator.create("c", 0); //$NON-NLS-1$
try {
assertTimeout(start, TIMEOUT, c);
assertEquals("No change in deadline should have occurred", 0, c.extendTimeout(TIMEOUT)); //$NON-NLS-1$
assertTimeout(start, TIMEOUT, c);
} finally {
try {
c.end();
} catch (CoordinationException e) {
// noop
}
}
}
@Test
public void testExtendTimeoutWhenMaxTimeoutNotAlreadyReached() throws Exception {
long start = System.currentTimeMillis();
long timeout = 1500;
Coordination c = coordinator.create("c", timeout); //$NON-NLS-1$
try {
assertTimeout(start, timeout, c);
c.extendTimeout(timeout);
assertTimeout(start, timeout * 2, c);
c.extendTimeout(TIMEOUT);
assertTimeout(start, TIMEOUT, c);
assertEquals("No change in deadline should have occurred", 0, c.extendTimeout(TIMEOUT)); //$NON-NLS-1$
assertTimeout(start, TIMEOUT, c);
} finally {
try {
c.end();
} catch (CoordinationException e) {
// noop
}
}
}
@Test
public void testNoMaxTimeoutWithTimeout() throws Exception {
Activator.getBundleContext().ungetService(coordinatorRef);
System.setProperty(PROPERTY_NAME, String.valueOf(0));
coordinatorRef = Activator.getBundleContext().getServiceReference(Coordinator.class);
coordinator = Activator.getBundleContext().getService(coordinatorRef);
long start = System.currentTimeMillis();
long timeout = 2000;
Coordination c = coordinator.create("c", timeout); //$NON-NLS-1$
try {
assertTimeout(start, timeout, c);
c.join(5000);
assertTerminated(c);
assertTimeoutDuration(start, timeout);
} finally {
try {
c.end();
} catch (CoordinationException e) {
// noop
}
}
}
@Before
@Override
public void setUp() throws Exception {
System.setProperty(PROPERTY_NAME, String.valueOf(TIMEOUT));
assertSystemProperty(PROPERTY_NAME, String.valueOf(TIMEOUT));
assertFrameworkProperty(PROPERTY_NAME, String.valueOf(TIMEOUT));
// The above system property initialization must occur before calling super.setUp().
super.setUp();
}
private void assertFrameworkProperty(String name, String value) {
assertEquals("Wrong value for framework property " + name, value, Activator.getBundleContext().getProperty(name)); //$NON-NLS-1$
}
private void assertSystemProperty(String name, String value) {
assertEquals("Wrong value for system property " + name, value, System.getProperty(name)); //$NON-NLS-1$
}
private void assertTerminated(Coordination c) {
assertTrue("Not terminated", c.isTerminated()); //$NON-NLS-1$
}
private void assertTimeout(long start, long timeout, Coordination c) {
assertTrue("Wrong timeout", c.extendTimeout(0) >= start + timeout); //$NON-NLS-1$
}
private void assertTimeoutDuration(long start, long timeout) {
assertTrue("Timeout too long", System.currentTimeMillis() - start <= timeout + DEVIATION); //$NON-NLS-1$
}
}
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