/*
* 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.openejb.resource.thread;
import org.apache.openejb.loader.SystemInstance;
import org.apache.openejb.spi.ContainerSystem;
import javax.enterprise.concurrent.ManagedThreadFactory;
import javax.naming.NamingException;
import java.util.concurrent.ThreadFactory;
final class ThreadFactories {
private ThreadFactories() {
// no-op
}
public static ManagedThreadFactory findThreadFactory(final String threadFactory)
throws InstantiationException, IllegalAccessException, NamingException {
try {
final Class<?> aClass = Thread.currentThread().getContextClassLoader().loadClass(threadFactory);
if (!ManagedThreadFactory.class.isAssignableFrom(aClass) && ThreadFactory.class.isAssignableFrom(aClass)) {
return new ManageMyThreadFactory(ThreadFactory.class.cast(aClass.newInstance()));
}
return ManagedThreadFactory.class.cast(aClass.newInstance());
} catch (final ClassNotFoundException e) {
return ManagedThreadFactory.class.cast(SystemInstance.get().getComponent(ContainerSystem.class)
.getJNDIContext().lookup("openejb:Resource/" + threadFactory));
}
}
private static final class ManageMyThreadFactory implements ManagedThreadFactory {
private final ThreadFactory delegate;
private ManageMyThreadFactory(final ThreadFactory delegate) {
this.delegate = delegate;
}
@Override
public Thread newThread(final Runnable r) {
return delegate.newThread(r);
}
}
}