为Spring AOP方面提供超时执行

providing timeout execution for a Spring AOP Aspect(为Spring AOP方面提供超时执行)

问题描述

如何为Spring AOP方面提供超时执行？

MyAspect的记录器方法的执行时间不应超过30秒，如果不超过30秒，我将希望停止该方法的执行。我如何才能做到这一点？

MyAspect代码：

@Aspect
@Component
public class MyAspect {

     @Autowired
     private myService myService;

     @AfterReturning(pointcut = "execution(* xxxxx*(..))", returning = "paramOut")
     public void logger(final JoinPoint jp, Object paramOut){
         Event event = (Event) paramOut;
         myService.save(event);
     }
}

myService接口：

public interface myService {
    void save(Event event);
}

myServiceImpl：

@Service
@Transactional
public class myServiceImpl implements myService {

    @PersistenceContext
    private EntityManager entityManager;

    @Override
    public void save(Event event) {
        entityManager.persist(event);
    }
}

推荐答案

使用java.util.concurrent.Future查看超时。请参见下一个示例：

@AfterReturning(pointcut = "execution(* xxxxx*(..))", returning = "paramOut")
public void logger(final JoinPoint jp, Object paramOut){
     Event event = (Event) paramOut;

     ExecutorService executor = Executors.newSingleThreadExecutor();

     Future<Void> future = executor.submit(new Callable<Void>() {
         public Void call() throws Exception {
            myService.save(event);
            return null;
        }
    });

    try
    {
        future.get(30, TimeUnit.SECONDS);
    }
    catch(InterruptedException | ExecutionException | TimeoutException e){
       //do something or log it
    } finally {
       future.cancel(true);
    }

 }

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