是否可以使用@Transactional测量所有Spring托管交易的时间？ [英] Is it possible to measure time of all Spring managed transactions with @Transactional?

问题描述

我想测量Spring管理的交易时间，用 JpaTJpaTransactionManager / PlatformTransactionManager 来检测长待处理交易和警告一些听众关于这种情况。

I would like to measure time of transacactions managed by Spring with JpaTJpaTransactionManager/PlatformTransactionManager to detect long pending transactions and warn some listener about that condition.

我可以在 @Transactional 方法上使用方面，但由于交易传播，它不是检测确切事务何时开始或结束的好方法。

I could use aspect on @Transactional methods but due to transaction propagation it's not a good way to detect when exact transaction is started or finished.

对于像事务监听器这样的东西，可以访问启动/结束事件以及一些bean名称对象启动trasaction或只是一个堆栈跟踪

It would be good to something like transaction listener with access to start/finish events together with some bean name of object starting the trasaction or just a stack trace

推荐答案

在带注释的方法中使用TransactionSynchronizationManager：

Use TransactionSynchronizationManager inside annotated method:

TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronization(){

       long startTime;

       void beforeCommit() {
           startTime = System.nanoTime();
       }
       void afterCommit(){
           System.out.println("Transaction time: " + (System.nanoTime() - startTime));
       }
});

跟踪方面的所有交易：

 @Aspect
 class TransactionAspect extends TransactionSynchronizationAdapter {

   @Before("@annotation(org.springframework.transaction.annotation.Transactional)")
   public void registerTransactionSyncrhonization() {
       TransactionSynchronizationManager.registerSynchronization(this);

   }

   ThreadLocal<Long> startTime = new ThreadLocal<>();

   void beforeCommit() {
       startTime.set(System.nanoTime());
   }
   void afterCommit(){
       System.out.println("Transaction time: " + (System.nanoTime() - startTime.get()));
   }
}

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