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enable prometheus metrics

Signed-off-by: Christine Dodrill <[email protected]>
main
Cadey Ratio 6 months ago
parent
commit
ae69dcba4f
  1. 1
      Cargo.lock
  2. 1
      Cargo.toml
  3. 26
      src/main.rs

1
Cargo.lock

@ -720,6 +720,7 @@ name = "printerfacts"
version = "0.3.0"
dependencies = [
"anyhow",
"hyper",
"lazy_static",
"mime",
"pfacts",

1
Cargo.toml

@ -9,6 +9,7 @@ build = "build.rs"
[dependencies]
anyhow = "1"
hyper = "0.14"
lazy_static = "1.4"
mime = "0.3.0"
pfacts = "0.1.0"

26
src/main.rs

@ -1,21 +1,24 @@
use crate::templates::RenderRucte;
use hyper::{header::CONTENT_TYPE, Body, Response};
use lazy_static::lazy_static;
use pfacts::Facts;
use prometheus::{opts, register_int_counter_vec, IntCounterVec};
use prometheus::{opts, register_int_counter_vec, Encoder, IntCounterVec, TextEncoder};
use rand::prelude::*;
use std::{convert::Infallible, str::FromStr};
use tokio::net::UnixListener;
use tokio_stream::wrappers::UnixListenerStream;
use warp::{http::Response, Filter, Rejection, Reply};
use warp::{Filter, Rejection, Reply};
include!(concat!(env!("OUT_DIR"), "/templates.rs"));
const APPLICATION_NAME: &str = concat!(env!("CARGO_PKG_NAME"), "/", env!("CARGO_PKG_VERSION"));
lazy_static! {
static ref HIT_COUNTER: IntCounterVec =
register_int_counter_vec!(opts!("hits", "Number of hits to various pages"), &["page"])
.unwrap();
static ref HIT_COUNTER: IntCounterVec = register_int_counter_vec!(
opts!("printerfacts_hits", "Number of hits to various pages"),
&["page"]
)
.unwrap();
}
async fn give_fact(facts: Facts) -> Result<String, Infallible> {
@ -60,10 +63,23 @@ async fn main() -> anyhow::Result<()> {
let not_found_handler = warp::any().and_then(not_found);
let metrics_endpoint = warp::path("metrics").and(warp::path::end()).map(move || {
let encoder = TextEncoder::new();
let metric_families = prometheus::gather();
let mut buffer = vec![];
encoder.encode(&metric_families, &mut buffer).unwrap();
Response::builder()
.status(200)
.header(CONTENT_TYPE, encoder.format_type())
.body(Body::from(buffer))
.unwrap()
});
let server = warp::serve(
fact_handler
.or(index_handler)
.or(files)
.or(metrics_endpoint)
.or(not_found_handler)
.with(warp::log(APPLICATION_NAME)),
);

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