org.jboss.threads.DelegatingExecutorService Maven / Gradle / Ivy
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* JBoss, Home of Professional Open Source.
* Copyright 2017 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed 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.jboss.threads;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.AbstractExecutorService;
import java.util.concurrent.Executor;
import java.util.List;
/**
* An implementation of {@code ExecutorService} that delegates to the real executor, while disallowing termination.
*/
class DelegatingExecutorService extends AbstractExecutorService implements ExecutorService {
private final Executor delegate;
DelegatingExecutorService(final Executor delegate) {
this.delegate = delegate;
}
public void execute(final Runnable command) {
delegate.execute(command);
}
public boolean isShutdown() {
// container managed executors are never shut down from the application's perspective
return false;
}
public boolean isTerminated() {
// container managed executors are never shut down from the application's perspective
return false;
}
public boolean awaitTermination(final long timeout, final TimeUnit unit) throws InterruptedException {
return false;
}
public void shutdown() {
throw Messages.msg.notAllowedContainerManaged("shutdown");
}
public List shutdownNow() {
throw Messages.msg.notAllowedContainerManaged("shutdownNow");
}
public String toString() {
return String.format("%s -> %s", super.toString(), delegate);
}
}