com.metamx.common.concurrent.ExecutorServices Maven / Gradle / Ivy
/*
* Copyright 2011,2012 Metamarkets Group Inc.
*
* 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 com.metamx.common.concurrent;
import com.google.common.base.Throwables;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import com.metamx.common.lifecycle.Lifecycle;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class ExecutorServices
{
public static ExecutorService create(Lifecycle lifecycle, ExecutorServiceConfig config)
{
return manageLifecycle(
lifecycle,
Executors.newFixedThreadPool(
config.getNumThreads(),
new ThreadFactoryBuilder().setDaemon(true).setNameFormat(config.getFormatString()).build()
)
);
}
public static T manageLifecycle(Lifecycle lifecycle, final T service)
{
try {
lifecycle.addMaybeStartHandler(
new Lifecycle.Handler()
{
@Override
public void start() throws Exception
{
}
@Override
public void stop()
{
service.shutdownNow();
}
}
);
}
catch (Exception e) {
Throwables.propagate(e);
}
return service;
}
}