/*
* Copyright [2014] [Christian Loehnert, krampenschiesser@gmail.com]
* 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 de.ks.activity.executor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
public class GracefulExecutorShutdown {
private static final Logger log = LoggerFactory.getLogger(GracefulExecutorShutdown.class);
public void shutdown(ExecutorService executor, String identifier) {
if (!executor.isShutdown()) {
log.debug("Shutting down executor {}", identifier);
executor.shutdown();
if (!awaitTermination(executor)) {
executor.shutdownNow();
if (!awaitTermination(executor)) {
log.warn("Could not stop executor service {}", identifier);
}
}
}
}
protected boolean awaitTermination(ExecutorService executor) {
boolean stopped = false;
try {
stopped = executor.awaitTermination(5, TimeUnit.SECONDS);
} catch (InterruptedException e) {
stopped = true;
//
}
return stopped;
}
}