/*
* 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.tomcat.util.threads;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* Class which wraps a ScheduledExecutorService, while preventing lifecycle and configuration operations.
*/
public class ScheduledThreadPoolExecutor implements ScheduledExecutorService {
protected final ScheduledExecutorService executor;
/**
* Builds a wrapper for the given executor.
*
* @param executor the wrapped executor
*/
public ScheduledThreadPoolExecutor(ScheduledExecutorService executor) {
this.executor = executor;
}
@Override
public void shutdown() {
// Do nothing
}
@Override
public List<Runnable> shutdownNow() {
return Collections.emptyList();
}
@Override
public boolean isShutdown() {
return executor.isShutdown();
}
@Override
public boolean isTerminated() {
return executor.isTerminated();
}
@Override
public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
return executor.awaitTermination(timeout, unit);
}
@Override
public <T> Future<T> submit(Callable<T> task) {
return executor.submit(task);
}
@Override
public <T> Future<T> submit(Runnable task, T result) {
return executor.submit(task, result);
}
@Override
public Future<?> submit(Runnable task) {
return executor.submit(task);
}
@Override
public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks) throws InterruptedException {
return executor.invokeAll(tasks);
}
@Override
public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit)
throws InterruptedException {
return executor.invokeAll(tasks, timeout, unit);
}
@Override
public <T> T invokeAny(Collection<? extends Callable<T>> tasks) throws InterruptedException, ExecutionException {
return executor.invokeAny(tasks);
}
@Override
public <T> T invokeAny(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit)
throws InterruptedException, ExecutionException, TimeoutException {
return executor.invokeAny(tasks, timeout, unit);
}
@Override
public void execute(Runnable command) {
executor.execute(command);
}
@Override
public ScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) {
return executor.schedule(command, delay, unit);
}
@Override
public <V> ScheduledFuture<V> schedule(Callable<V> callable, long delay, TimeUnit unit) {
return executor.schedule(callable, delay, unit);
}
@Override
public ScheduledFuture<?> scheduleAtFixedRate(Runnable command, long initialDelay, long period, TimeUnit unit) {
return executor.scheduleAtFixedRate(command, initialDelay, period, unit);
}
@Override
public ScheduledFuture<?> scheduleWithFixedDelay(Runnable command, long initialDelay, long delay, TimeUnit unit) {
return executor.scheduleWithFixedDelay(command, initialDelay, delay, unit);
}
}