001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.util.concurrent;
018
019import org.slf4j.Logger;
020import org.slf4j.LoggerFactory;
021
022/**
023 * Thread factory which creates threads supporting a naming pattern. On JDK 21+, this factory creates virtual threads
024 * when the System property {@code camel.threads.virtual.enabled} is set to {@code true}. On JDK 17, only platform
025 * threads are available.
026 */
027public final class CamelThreadFactory implements ThreadFactoryTypeAware {
028    private static final Logger LOG = LoggerFactory.getLogger(CamelThreadFactory.class);
029
030    private final String pattern;
031    private final String name;
032    private final boolean daemon;
033
034    public CamelThreadFactory(String pattern, String name, boolean daemon) {
035        this.pattern = pattern;
036        this.name = name;
037        this.daemon = daemon;
038    }
039
040    @Override
041    public boolean isVirtual() {
042        return false;
043    }
044
045    @Override
046    public Thread newThread(Runnable runnable) {
047        String threadName = ThreadHelper.resolveThreadName(pattern, name);
048
049        Thread answer = new Thread(runnable, threadName);
050        answer.setDaemon(daemon);
051
052        LOG.trace("Created thread[{}] -> {}", threadName, answer);
053        return answer;
054    }
055
056    public String getName() {
057        return name;
058    }
059
060    @Override
061    public String toString() {
062        return "CamelThreadFactory[" + name + "]";
063    }
064}