prometheus_exporter

Helper libary to export prometheus metrics using hyper.

It uses rust-prometheus for collecting and rendering the prometheus metrics and hyper for exposing the metrics through http.

Add this to your Cargo.toml:

[dependencies]
prometheus_exporter = "0.1"

The usage is pretty simple. First you register all your metrics with the provided macros:

let connection_state = register_int_gauge_vec!(
    vec![namespace, "tcp", "connection_state_total"].join("_"),
    "what state current tcp connections are in".to_string(),
    &["state"]
)
.expect("can not create tcp_connection_state_closed metric");

That is also where the metric values get updated:

connection_state
  .with_label_values(&["closed"])
  .set(1234);

After all the metrics are registerd and the updating is setup the exporter can be started:

use std::net::SocketAddr;

let addr: SocketAddr = "0.0.0.0:19899".parse().expect("can not parse listen addr");
PrometheusExporter::run(&addr);

This will block the thread it is executed in.

In the future the exporter will also provide a way to update the metrics when a new request comes in but that still needs to be implemented.

prometheus_exporter 0.2.0

prometheus_exporter