su.nlq.prometheus.jmx.scraper.BeanScraper Maven / Gradle / Ivy

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Pipe for JMX MBeans to Prometheus

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package su.nlq.prometheus.jmx.scraper;

import org.jetbrains.annotations.NotNull;
import su.nlq.prometheus.jmx.bean.MBean;
import su.nlq.prometheus.jmx.logging.Logger;

import javax.management.*;
import java.io.IOException;
import java.util.Arrays;
import java.util.Optional;

final class BeanScraper {

  private final @NotNull MBeanServerConnection connection;
  private final @NotNull Receiver receiver;

  public BeanScraper(@NotNull MBeanServerConnection connection, @NotNull Receiver receiver) {
    this.connection = connection;
    this.receiver = receiver;
  }

  public void scrape(@NotNull ObjectName name) {
    getMBeanAttributesInfo(name).ifPresent(infos -> infos.forEach(info ->
        getAttributeValue(name, info).ifPresent(value -> {
          Logger.instance.trace("Scraping '{}[{}]'", name, info);
          MBean.of(name, info).ifPresent(bean -> BeanValueScraper.scrape(receiver, bean, value));
        })));
  }

  private @NotNull Optional