ExampleExporter.java

package io.prometheus.client.exporter;

import io.prometheus.client.Counter;
import io.prometheus.client.Gauge;
import io.prometheus.client.Histogram;
import io.prometheus.client.Summary;
import io.prometheus.client.vertx.MetricsHandler;
import io.vertx.core.Vertx;
import io.vertx.ext.web.Router;

public class ExampleExporter {

  static final Gauge g = Gauge.build().name("gauge").help("blah").register();
  static final Counter c = Counter.build().name("counter").help("meh").register();
  static final Summary s = Summary.build().name("summary").help("meh").register();
  static final Histogram h = Histogram.build().name("histogram").help("meh").register();
  static final Gauge l = Gauge.build().name("labels").help("blah").labelNames("l").register();

  public static void main(String[] args) throws Exception {
    final Vertx vertx = Vertx.vertx();
    final Router router = Router.router(vertx);

    router.route("/metrics").handler(new MetricsHandler());

    vertx.createHttpServer().requestHandler(router::accept).listen(1234);

    g.set(1);
    c.inc(2);
    s.observe(3);
    h.observe(4);
    l.labels("foo").inc(5);
  }
}