العمل غير المتزامن والجدولة وعمر الحدث

package training.catalog;

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ThreadPoolExecutor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Service;

@Configuration(proxyBeanMethods = false)
@EnableAsync
class AsyncConfiguration {
    @Bean("catalogTasks")
    ThreadPoolTaskExecutor catalogTasks() {
        var executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(2);
        executor.setMaxPoolSize(4);
        executor.setQueueCapacity(32);
        executor.setThreadNamePrefix("catalog-");
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.AbortPolicy());
        return executor;
    }
}

@Service
class SummaryJobs {
    private final SummaryBuilder builder;
    SummaryJobs(SummaryBuilder builder) { this.builder = builder; }
    @Async("catalogTasks")
    public CompletableFuture<Summary> build(SummaryCommand command) {
        return CompletableFuture.completedFuture(builder.build(command));
    }
}

تهيئه دورة Spring عند الدمج؛ ولم يبدأ هنا كائن أوعامل أوجدولة أوخدمة.

public class Main {

 public static void main(String[] args) throws Exception {
var executor=new java.util.concurrent.ThreadPoolExecutor(1,1,0L,java.util.concurrent.TimeUnit.MILLISECONDS,
 new java.util.concurrent.ArrayBlockingQueue<Runnable>(1));
try {
 var result=executor.submit(()->7);
 System.out.println(result.get());
} finally {
 executor.shutdown();
 if(!executor.awaitTermination(2,java.util.concurrent.TimeUnit.SECONDS)) executor.shutdownNow();
}
 }
}

7

تُلاحظ نتيجة محلية وينتهي العامل دون ادعاء تنفيذ الإطار أوقياس الامتلاء.