/**
* 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.drill.common;
/**
* A wrapper for Runnables that provides a hook to do cleanup.
*/
public abstract class SelfCleaningRunnable implements Runnable {
private final Runnable runnable;
/**
* Constructor.
*
* @param runnable the Runnable to wrap
*/
public SelfCleaningRunnable(final Runnable runnable) {
this.runnable = runnable;
}
@Override
public void run() {
try {
runnable.run();
} finally {
cleanup();
}
}
/**
* Cleanup.
*
* <p>Derived classes should put any necessary cleanup in here. This
* is guaranteed to be called, even if the wrapped Runnable throws an
* exception.
*/
protected abstract void cleanup();
}