英文:

AOP Isn't hitting the custom annotation

问题 {#heading}

我基本上试图创建一个注解，用于提供任何方法的执行时间。在运行以下代码时，我不确定它是否触发了该方法。此外，IntelliJ 建议"advice advises no method"。

这是我想要它执行的操作 -

import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
import org.springframework.stereotype.Component;
@Aspect
@Component
@Slf4j
@ConditionalOnExpression("${aspect.enabled:true}")
public class ExecutionTimeTracker {
@Around(value = "@annotation(TrackExecutionTime)")
public Object executionTime(ProceedingJoinPoint point) throws Throwable {
long startTime = System.currentTimeMillis();
Object object = point.proceed();
long endTime = System.currentTimeMillis();
log.info(point.getSignature().getDeclaringTypeName() +
"." + point.getSignature().getName() +
" >> Took : " + (endTime - startTime) + "mills");
return object;
}
}

这是我的 @interface

import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
@Target({ METHOD })
@Retention(RUNTIME)
public @interface TrackExecutionTime {
}

这是用于测试的单元测试 -

import org.junit.jupiter.api.Test;
public class ExecutionTimeTrackerTest {
@Test
@TrackExecutionTime
public void someMethod(){
    int[] randomNumbers = {582, 15, 596, 827, 779, 426, 153, 557, 394, 12};
    Arrays.sort(randomNumbers);
    int index = Arrays.binarySearch(randomNumbers, 827);
    Assertions.assertEquals(9, index);
}

}

我尝试过将 @Around(value = "@annotation(TrackExecutionTime)") 更改为不同的位置，并尝试使用不同的日志级别设置来执行，但似乎没有任何效果。 英文:

I am basically trying to create an annotation that provides me the execution time of any method. While running the following code, I am not sure if it is hitting the method. Also, intelliJ suggests that "advice advises no method".

This is what I want it to do -

import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
import org.springframework.stereotype.Component;
@Aspect
@Component
@Slf4j
@ConditionalOnExpression("${aspect.enabled:true}")
public class ExecutionTimeTracker {
@Around(value = "@annotation(TrackExecutionTime)")
public Object executionTime(ProceedingJoinPoint point) throws Throwable {
long startTime = System.currentTimeMillis();
Object object = point.proceed();
long endtime = System.currentTimeMillis();
log.info(point.getSignature().getDeclaringTypeName() +
"." + point.getSignature().getName() +
" >> Took : " + (endtime - startTime) + "mills");
return object;
}
}

This is my @interface

import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
@Target({ METHOD })
@Retention(RUNTIME)
public @interface TrackExecutionTime {
}

This is the UT to test this -

import org.junit.jupiter.api.Test;
public class ExecutionTimeTrackerTest {
@Test
@TrackExecutionTime
public void someMethod(){
    int[] randomNumbers = {582, 15, 596, 827, 779, 426, 153, 557, 394, 12};
    Arrays.sort(randomNumbers);
    int index = Arrays.binarySearch(randomNumbers, 827);
    Assertions.assertEquals(9, index);
}

}

I tried changing @Around(value = "@annotation(TrackExecutionTime)") to different locations, tried executing with setting up different log levels too. Nothing seem to work.

答案1 {#1}

得分: 1

问题在于方面由Spring管理，而您的测试中没有使用Spring。您需要创建一个Spring Boot集成测试才能使其工作。

例如：假设您有以下服务：

@Service
class MyService {
    @TrackExecutionTime
    public void doSomething() {
        // 只是浪费一些时间，假装在做一些有用的事情
        for (int i = 0; i < 100_000; i++) {
            Math.sqrt(1000);
        }
        System.out.println("Hello, world");
    }
}

然后，您需要以下集成测试（实际上有点无意义，但只是为了向您展示它的工作原理）：

@SpringBootTest
@RunWith(SpringRunner.class)
public class IntegrationTest {
@Autowired
MyService myService;
@Test
public void testAspect() {
myService.doSomething();
}

}

然后，您将在控制台中看到方面被使用：

Hello, world
com.example.MyService.doSomething >> Took : 31mills

英文:

The problem is that the aspect is managed by Spring and you're not using Spring in your test. You need to create a Spring Boot integration test for this to work.

Example: imagine you have this service

@Service
class MyService {
    @TrackExecutionTime
    public void doSomething() {
        // just waste some time pretending to do something useful
        for (int i = 0; i < 100_000; i++) {
            Math.sqrt(1000);
        }
        System.out.println("Hello, world");
    }
}

then you need the following integration test (a bit of a pointless test to be honest, but it's just to show you how it works):

@SpringBootTest
@RunWith(SpringRunner.class)
public class IntegrationTest {
@Autowired
MyService myService;
@Test
public void testAspect() {
myService.doSomething();

}

}

then you'll see that the aspect is used in your console:

Hello, world
com.example.MyService.doSomething >> Took : 31mills