io.druid.java.util.common.concurrent.FunctionalThreadFactory Maven / Gradle / Ivy
/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets 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 io.druid.java.util.common.concurrent;
import com.google.common.base.Function;
import java.util.concurrent.ThreadFactory;
/**
*/
public class FunctionalThreadFactory implements ThreadFactory
{
private final ThreadFactory delegate;
public FunctionalThreadFactory(final String name)
{
this(
new ThreadFactory()
{
@Override
public Thread newThread(Runnable runnable)
{
return new Thread(runnable, name);
}
}
);
}
public FunctionalThreadFactory(ThreadFactory delegate)
{
this.delegate = delegate;
}
@Override
public Thread newThread(Runnable runnable)
{
return delegate.newThread(runnable);
}
public FunctionalThreadFactory transform(Function fn)
{
return new FunctionalThreadFactory(fn.apply(delegate));
}
public FunctionalThreadFactory transformThread(final Function fn)
{
return new FunctionalThreadFactory(new ThreadFactory()
{
@Override
public Thread newThread(Runnable runnable)
{
return fn.apply(delegate.newThread(runnable));
}
});
}
public FunctionalThreadFactory daemonize()
{
return transformThread(
new Function()
{
@Override
public Thread apply(Thread input)
{
input.setDaemon(true);
return input;
}
}
);
}
}