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VirtualThreadTaskExecutor.java
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VirtualThreadTaskExecutor.java
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/*
* Copyright 2002-2023 the original author or authors.
*
* 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
*
* https://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.springframework.core.task;
import java.util.concurrent.ThreadFactory;
/**
* A {@link TaskExecutor} implementation based on virtual threads in JDK 21+.
* The only configuration option is a thread name prefix.
*
* <p>For additional features such as concurrency limiting or task decoration,
* consider using {@link SimpleAsyncTaskExecutor#setVirtualThreads} instead.
*
* @author Juergen Hoeller
* @since 6.1
* @see SimpleAsyncTaskExecutor
*/
public class VirtualThreadTaskExecutor implements AsyncTaskExecutor {
private final ThreadFactory virtualThreadFactory;
/**
* Create a new {@code VirtualThreadTaskExecutor} without thread naming.
*/
public VirtualThreadTaskExecutor() {
this.virtualThreadFactory = new VirtualThreadDelegate().virtualThreadFactory();
}
/**
* Create a new {@code VirtualThreadTaskExecutor} with thread names based
* on the given thread name prefix followed by a counter (e.g. "test-0").
* @param threadNamePrefix the prefix for thread names (e.g. "test-")
*/
public VirtualThreadTaskExecutor(String threadNamePrefix) {
this.virtualThreadFactory = new VirtualThreadDelegate().virtualThreadFactory(threadNamePrefix);
}
/**
* Return the underlying virtual {@link ThreadFactory}.
* Can also be used for custom thread creation elsewhere.
*/
public final ThreadFactory getVirtualThreadFactory() {
return this.virtualThreadFactory;
}
@Override
public void execute(Runnable task) {
this.virtualThreadFactory.newThread(task).start();
}
}