千分表从未更新

问题描述 投票:0回答:1

我正在尝试为千分尺建立一个自定义量规,该量规应监视自定义ThreadPoolTask​​Executor。问题是仪表值保持不变,并且自应用程序启动以来就从未更新过。但是,执行程序统计信息(在调试器中可以看到)显示更改的值。

这是我的仪表配置的班级。

@Component
public class ThreadPoolMetricProbe implements MeterBinder {

@Inject
private Executor taskExecutor;

@Override
public void bindTo(MeterRegistry meterRegistry) {
    ThreadPoolTaskExecutor exec = (ThreadPoolTaskExecutor) taskExecutor;

    long completedTaskCount = exec.getThreadPoolExecutor().getCompletedTaskCount();
    int largestPoolSize = exec.getThreadPoolExecutor().getLargestPoolSize();
    int maximumPoolSize = exec.getThreadPoolExecutor().getMaximumPoolSize();
    int poolSize = exec.getThreadPoolExecutor().getPoolSize();
    long taskCount = exec.getThreadPoolExecutor().getTaskCount();
    int activeCount = exec.getThreadPoolExecutor().getActiveCount();

    String threadNamePrefix = exec.getThreadNamePrefix();

    Gauge.builder("executorCompletedTaskCount", completedTaskCount, Double::new)
            .description(String.format("Returns the approximate total number of tasks that have completed execution of %s executor", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Gauge.builder("executorLargestThreadsNumber", largestPoolSize, Double::new)
            .description(String.format(" Returns the largest number of threads that have ever simultaneously been in the pool of %s executor", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Gauge.builder("executorMaximumAllowedThreadsNumber", maximumPoolSize, Double::new)
            .description(String.format("Returns the maximum allowed number of threads of %s executor", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Gauge.builder("executorCurrentNumberOfThreads", poolSize, Double::new)
            .description(String.format("Returns the current number of threads in the %s executor pool", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Gauge.builder("executorTotalTaskCount", taskCount, Double::new)
            .description(String.format(" Returns the approximate total number of tasks that have ever been scheduled for execution by %s executor", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Gauge.builder("executorActiveThreadsCount", activeCount, Double::new)
            .description(String.format("Returns the approximate number of threads that are actively executing tasks by %s executor", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);


    Metrics.addRegistry(meterRegistry);

}

@Scheduled(fixedDelay = 5000)
public void measure(){
    Metrics.gauge("executorCompletedTaskCount",((ThreadPoolTaskExecutor) taskExecutor).getThreadPoolExecutor().getCompletedTaskCount());
    Metrics.gauge("executorTotalTaskCount",((ThreadPoolTaskExecutor) taskExecutor).getThreadPoolExecutor().getTaskCount());
    Metrics.gauge("executorCurrentNumberOfThreads",((ThreadPoolTaskExecutor) taskExecutor).getThreadPoolExecutor().getPoolSize());
   }
}

我正在这里注册多个量规,并希望每个请求更新一次或...该方法是最后一次尝试找到监视和更新值的正确方法。

所以问题是:

  1. 仪表会自动更新吗?如果是-多久一次?
  2. 如果仪表没有自动更新-那么如何更新它们正确吗?
  3. 量具是否适合这种测量?我无法使用的AFAIK计数器,因为某些值可以递减。
  4. 毕竟我需要做Metrics.addRegistry(meterRegistry)量具已创建?
java spring-boot spring-boot-actuator spring-micrometer
1个回答
0
投票

事实是Gauge.builder()方法返回量规本身,而传递给MeterRegistry meterRegistrypublic void bindTo(MeterRegistry meterRegistry)对象具有方法meterRegistry.gauge()可以返回对对象值的引用:

AtomicDouble executorCompletedTaskCount = meterRegistry.gauge("executor.completed.task.count", new AtomicDouble(completedTaskCount));

然后可以在预定方法中对其进行修改。

完整的代码如下:

@Component
public class ThreadPoolMetricProbe implements MeterBinder {

@Inject
private Executor taskExecutor;

private AtomicDouble executorCompletedTaskCount;
private AtomicDouble executorMaximumPoolSize;
private AtomicDouble executorLargestThreadsNumberEver;
private AtomicDouble executorCurrentNumberOfThreads;
private AtomicDouble executorTotalTaskCount;
private AtomicDouble executorActiveThreadsCount;

@Override
public void bindTo(MeterRegistry meterRegistry) {
    ThreadPoolTaskExecutor exec = (ThreadPoolTaskExecutor) taskExecutor;
    long completedTaskCount = exec.getThreadPoolExecutor().getCompletedTaskCount();
    int largestPoolSizeEver = exec.getThreadPoolExecutor().getLargestPoolSize();
    int maximumPoolSize = exec.getThreadPoolExecutor().getMaximumPoolSize();
    int currentNumberOfThreads = exec.getThreadPoolExecutor().getPoolSize();
    long totalTaskCountEver = exec.getThreadPoolExecutor().getTaskCount();
    int activeThreadsCount = exec.getThreadPoolExecutor().getActiveCount();

    executorCompletedTaskCount = meterRegistry.gauge("executor.completed.task.count", new AtomicDouble(completedTaskCount));
    executorMaximumPoolSize = meterRegistry.gauge("executor.maximum.pool.size", new AtomicDouble(maximumPoolSize));
    executorLargestThreadsNumberEver = meterRegistry.gauge("executor.largest.threads.number.ever", new AtomicDouble(largestPoolSizeEver));
    executorCurrentNumberOfThreads = meterRegistry.gauge("executor.current.number.of.threads", new AtomicDouble(currentNumberOfThreads));
    executorTotalTaskCount = meterRegistry.gauge("executor.total.tasks.ever.countunt", new AtomicDouble(totalTaskCountEver));
    executorActiveThreadsCount = meterRegistry.gauge("executor.active.threads.count", new AtomicDouble(activeThreadsCount));

}

@Scheduled(fixedDelay = 5000)
public void measure(){
    ThreadPoolExecutor threadPoolExecutor = ((ThreadPoolTaskExecutor) taskExecutor).getThreadPoolExecutor();
    executorCompletedTaskCount.set(threadPoolExecutor.getCompletedTaskCount());
    executorMaximumPoolSize.set(threadPoolExecutor.getMaximumPoolSize());
    executorLargestThreadsNumberEver.set(threadPoolExecutor.getLargestPoolSize());
    executorCurrentNumberOfThreads.set(threadPoolExecutor.getPoolSize());
    executorTotalTaskCount.set(threadPoolExecutor.getTaskCount());
    executorActiveThreadsCount.set(threadPoolExecutor.getActiveCount());
}

希望这是更新量规值的正确方法。

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