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/*******************************************************************************
* Copyright (c) 2007, 2008 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.security.tests.storage;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.*;
/**
* Allows test cases to wait for the extension registry notifications.
* This listener checks navigability to related elements from extensions.
* @since 3.4
* Copied from runtime tests
*/
public class WaitingRegistryListener extends org.junit.Assert implements IRegistryEventListener {
final static long MIN_WAIT_TIME = 100; // minimum wait time in milliseconds
private List<String> extensionIDs; // String[]
private List<String> extPointIDs; // String[]
private volatile boolean added;
private volatile boolean removed;
private volatile int callbacks;
private String extPointId;
public WaitingRegistryListener() {
reset();
}
public void register(String id) {
extPointId = id; // used for verification in callbacks
if (extPointId != null)
RegistryFactory.getRegistry().addListener(this, extPointId);
else
RegistryFactory.getRegistry().addListener(this);
}
public void unregister() {
RegistryFactory.getRegistry().removeListener(this);
}
public void reset() {
extensionIDs = null;
extPointIDs = null;
added = false;
removed = false;
callbacks = 0;
}
public boolean isAdded() {
return added;
}
public boolean isRemoved() {
return removed;
}
public synchronized String[] extensionsReceived(long timeout) {
if (extensionIDs != null)
return extensionIDs.toArray(new String[0]);
try {
wait(timeout);
} catch (InterruptedException e) {
// who cares?
}
if (extensionIDs == null)
return null;
return extensionIDs.toArray(new String[0]);
}
public synchronized String[] extPointsReceived(long timeout) {
if (extPointIDs != null)
return extPointIDs.toArray(new String[0]);
try {
wait(timeout);
} catch (InterruptedException e) {
// who cares?
}
if (extPointIDs == null)
return null;
return extPointIDs.toArray(new String[0]);
}
public synchronized int waitFor(int events, long maxTimeout) {
long startTime = System.currentTimeMillis();
try {
while (callbacks < events) {
long currentTime = System.currentTimeMillis();
long alreadyWaited = currentTime - startTime;
if (alreadyWaited < 0)
alreadyWaited = 0; // just in case if system timer is not very precise
long timeToWait = maxTimeout - alreadyWaited;
if (timeToWait <= 0) {
wait(MIN_WAIT_TIME); // give it a last chance
break; // timed out
}
wait(timeToWait);
}
} catch (InterruptedException e) {
// breaks the cycle
}
return callbacks;
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.IRegistryEventListener#added(org.eclipse.core.runtime.IExtension[])
*/
synchronized public void added(IExtension[] extensions) {
extensionsToString(extensions);
added = true;
callbacks++;
notify();
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.IRegistryEventListener#removed(org.eclipse.core.runtime.IExtension[])
*/
synchronized public void removed(IExtension[] extensions) {
extensionsToString(extensions);
removed = true;
callbacks++;
notify();
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.IRegistryEventListener#added(org.eclipse.core.runtime.IExtensionPoint[])
*/
synchronized public void added(IExtensionPoint[] extensionPoints) {
extPointsToString(extensionPoints);
added = true;
callbacks++;
notify();
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.IRegistryEventListener#removed(org.eclipse.core.runtime.IExtensionPoint[])
*/
synchronized public void removed(IExtensionPoint[] extensionPoints) {
extPointsToString(extensionPoints);
removed = true;
callbacks++;
notify();
}
private void extensionsToString(IExtension[] extensions) {
extensionIDs = new ArrayList<String>(extensions.length);
for (int i = 0; i < extensions.length; i++) {
IExtension extension = extensions[i];
extensionIDs.add(extension.getUniqueIdentifier());
// test navigation: to extension point
String ownerId = extension.getExtensionPointUniqueIdentifier();
if (extPointId != null)
assertTrue(extPointId.equals(ownerId));
// test navigation: all children
assertTrue(validContents(extension.getConfigurationElements()));
}
}
private boolean validContents(IConfigurationElement[] children) {
if (children == null)
return true;
for (int i = 0; i < children.length; i++) {
if (!children[i].isValid())
return false;
if (!validContents(children[i].getChildren()))
return false;
}
return true;
}
private void extPointsToString(IExtensionPoint[] extensionPoints) {
extPointIDs = new ArrayList<String>(extensionPoints.length);
for (int i = 0; i < extensionPoints.length; i++)
extPointIDs.add(extensionPoints[i].getUniqueIdentifier());
}
}
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