NamedThreadFactory.java

/*
 * 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.nifi.provenance.util;

import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

public class NamedThreadFactory implements ThreadFactory {

    private final AtomicInteger counter = new AtomicInteger(0);
    private final ThreadFactory defaultThreadFactory = Executors.defaultThreadFactory();
    private final String namePrefix;
    private final boolean daemon;

    public NamedThreadFactory(final String namePrefix) {
        this(namePrefix, false);
    }

    public NamedThreadFactory(final String namePrefix, final boolean daemon) {
        this.namePrefix = namePrefix;
        this.daemon = daemon;
    }

    @Override
    public Thread newThread(final Runnable r) {
        final Thread thread = defaultThreadFactory.newThread(r);
        thread.setName(namePrefix + "-" + counter.incrementAndGet());
        thread.setDaemon(daemon);
        return thread;
    }
}