TransmittableThreadLocal 测试

import com.alibaba.ttl.TransmittableThreadLocal;
import com.alibaba.ttl.TtlRunnable;
import com.alibaba.ttl.threadpool.TtlExecutors;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;

import java.util.Date;
import java.util.concurrent.Executor;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

/**
 * TransmittableThreadLocal 测试
 */
@Slf4j
class TTLest {

    @Test
    void test1() throws InterruptedException {
        doTest();
    }

    /**
     * TTL 测试
     *
     * @throws InterruptedException
     */
    public void doTest() throws InterruptedException {
        TransmittableThreadLocal<String> context = new TransmittableThreadLocal<>();
//        ThreadLocal<String> context = new ThreadLocal<>();

        // 任务的具体方法
        Runnable runnable = () -> {
            System.out.println("当前任务被执行,执行时间:" + new Date() + " 执行线程:" + Thread.currentThread().getName() + "thread2 父线程数据{}" + context.get());
            context.set("value-set-in-son");
            System.out.println("当前任务被执行,执行时间:" + new Date() + " 执行线程:" + Thread.currentThread().getName() + "thread2 父线程数据{}" + context.get());
            try {
                // 等待 1s
                TimeUnit.SECONDS.sleep(1);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        };
        // 创建线程,线程的任务队列的长度为 1
        ThreadPoolExecutor threadPool = new ThreadPoolExecutor(1, 1,
                100, TimeUnit.SECONDS, new LinkedBlockingQueue<>(1),
                new ThreadPoolExecutor.CallerRunsPolicy());

        log.error("错误使用方式:1-----------------------------------");
        context.set("value-set-in-parent");

        // 添加并执行 4 个任务,模拟拒绝策略CallerRunsPolicy
        threadPool.execute(runnable);
        threadPool.execute(runnable);
        threadPool.execute(runnable);
        threadPool.execute(runnable);
        threadPool.execute(runnable);
        TimeUnit.SECONDS.sleep(5);

        log.error("正确使用方式:1-----------------------------------");
        context.set("value-set-in-parent");

        // 添加并执行 4 个任务,模拟拒绝策略CallerRunsPolicy
        threadPool.execute(TtlRunnable.get(runnable));
        threadPool.execute(TtlRunnable.get(runnable));
        threadPool.execute(TtlRunnable.get(runnable));
        threadPool.execute(TtlRunnable.get(runnable));
        threadPool.execute(TtlRunnable.get(runnable));
        TimeUnit.SECONDS.sleep(5);

        log.error("正确使用方式:2-----------------------------------");
        context.set("value-set-in-parent");

        Executor ttlThreadPool = TtlExecutors.getTtlExecutor(threadPool);
        // 添加并执行 4 个任务,模拟拒绝策略CallerRunsPolicy
        ttlThreadPool.execute(runnable);
        ttlThreadPool.execute(runnable);
        ttlThreadPool.execute(runnable);
        ttlThreadPool.execute(runnable);
        ttlThreadPool.execute(runnable);

        // 线程池执行完任务，关闭线程池
        threadPool.shutdown();
    }
}