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ClassloaderContextSetupProvider.java
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ClassloaderContextSetupProvider.java
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/*
* Copyright (c) 2023-2024 Contributors to the Eclipse Foundation.
* Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.enterprise.concurrent.test;
import java.util.Map;
import jakarta.enterprise.concurrent.ContextService;
import org.glassfish.enterprise.concurrent.spi.ContextHandle;
import org.glassfish.enterprise.concurrent.spi.ContextSetupProvider;
public class ClassloaderContextSetupProvider implements ContextSetupProvider {
private String classloaderName;
public transient ClassLoader classloaderBeforeSetup; // for test verification
public volatile int numResetCalled = 0;
public volatile Map<String, String> contextServiceProperties; // for test verification
public String throwsOnSetupMessage = null;
public ClassloaderContextSetupProvider(String classloaderName) {
this.classloaderName = classloaderName;
}
public void throwsOnSetup(String msg) {
throwsOnSetupMessage = msg;
}
@Override
public ContextHandle saveContext(ContextService contextService) {
return new SavedContext(Thread.currentThread().getContextClassLoader());
}
@Override
public ContextHandle setup(ContextHandle contextHandle) {
if (throwsOnSetupMessage != null) {
throw new IllegalStateException(throwsOnSetupMessage);
}
classloaderBeforeSetup = Thread.currentThread().getContextClassLoader();
SavedContext savedContext = (SavedContext)contextHandle;
ClassLoader contextClassLoader =
new NamedClassLoader(classloaderName, savedContext.originalClassloader);
Thread.currentThread().setContextClassLoader(contextClassLoader);
return new SavedContext(classloaderBeforeSetup);
}
@Override
public void reset(ContextHandle contextHandle) {
numResetCalled++;
SavedContext savedContext = (SavedContext)contextHandle;
Thread.currentThread().setContextClassLoader(savedContext.originalClassloader);
}
@Override
public ContextHandle saveContext(ContextService contextService, Map<String, String> contextObjectProperties) {
contextServiceProperties = contextObjectProperties;
return new SavedContext(Thread.currentThread().getContextClassLoader());
}
static class SavedContext implements ContextHandle {
transient ClassLoader originalClassloader;
public SavedContext(ClassLoader originalClassloader) {
this.originalClassloader = originalClassloader;
}
}
}