src/main/java/io/vertx/ext/prometheus/metrics/factories/GaugeFactory.java
public @NotNull Gauge httpRequests(@NotNull String name) {
    return gauges.computeIfAbsent("vertx_" + name + "_requests", key -> register(Gauge.build(key, "HTTP requests number")
        .labelNames("local_address", "method", "path", "state")
        .create()));
  }
public @NotNull Gauge httpRequests(@NotNull String name) {
    return gauges.computeIfAbsent("vertx_" + name + "_requests", key -> register(Gauge.build(key, "HTTP requests number")
        .labelNames("local_address", "method", "path", "state")
        .create()));
  }
HTTP requests gauge.

@param name The name of the gauge, without prefix and suffix.
@return A gauge for http requests, identified by the given name. Gauges with the same name are shared.