如何在 Java 应用程序中在 Spring 之外使用 Micrometer @Timed 注释 [英] How to use Micrometer @Timed annotation outside of Spring, in a Java Application

问题描述

我正在尝试使用 Micrometer 在我的 Java 应用程序中记录信息.

I am trying to use Micrometer to record info in my Java application.

我的应用程序主目录中有 Micrometer 注册表初始化如下:

I have Micrometer registry in my application main initialized as follows:

MeterRegistry registry = new SimpleMeterRegistry();

我有一个 CountedObject 类，它有一个 int id 和一个对 注册表 的引用.

I have a class CountedObject which has an int id and a reference to the registry.

在我的班级 CountedObject 中，我有一个名为 timedFunction() 的方法，如下所示:

In my class CountedObject I have a method called timedFunction() as follows:

@Timed(value = "myTimer")
public void timedFunction() {
    try {
        int sleepTime = new Random().nextInt(5) + 1;
        Thread.sleep(sleepTime * 1000L);
    } catch (InterruptedException e) {}
    System.out.println("timedFunction");
}

还有一个名为timedFunction()的方法如下:

And a method called timedFunction() as follows:

public void timeConsumingFunction() {
    LongTaskTimer longTaskTimer = AppMetrics.getInstance().getLongTaskTimer("longTaskTimer1");
    Sample task = longTaskTimer.start();
    
    try {
        int sleepTime = new Random().nextInt(5) + 1;
        Thread.sleep(sleepTime * 1000L);
    } catch (InterruptedException e) {}
    
    System.out.println("timeConsumingFunction() for object-" + id + " took: " + task.duration(TimeUnit.SECONDS));
    task.stop();
}

在我的应用程序中，我创建了一个对象 CountedObject 并运行这两种方法.

In my application I create an object CountedObject and run both methods.

然后我运行以下命令来打印所有指标信息:

Then I run the following to print all metrics info:

List<Meter> meters = registry.getMeters();
    
for (Meter meter : meters) {
    System.out.println(meter.getId());
    for (Measurement measurement : meter.measure()) {
        System.out.println(measurement.getStatistic() + " : " + measurement.getValue());
    }
    System.out.println("\n");
}

我只在指标中找到了 "longTaskTimer1" 而在注释方法中使用的 myTimer 不存在.如何使用此 @Timed 注释以及如何将其链接到我的应用程序的寄存器

I only find "longTaskTimer1" in the metrics and myTimer used in the annotated method is not there. How can this @Timed annotation be used and how to link it to my app's register

推荐答案

您需要设置 TimedAspect 来处理 @Timed 注释.如果您使用的是 Spring，只需创建一个 TimedAspect @Bean 就可以了.如果不这样做，则需要自己设置 AspectJ.

You need to set-up TimedAspect to process @Timed annotations. If you are using Spring, just create a TimedAspect @Bean and it should work. If you don't, you need to set-up AspectJ yourself.

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