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authorMendes <mendes.oulamara@pm.me>2022-10-04 18:14:49 +0200
committerMendes <mendes.oulamara@pm.me>2022-10-04 18:14:49 +0200
commit829f815a897b04986559910bbcbf53625adcdf20 (patch)
tree6db3c27cff2aded754a641d1f2b05c83be701267 /src/admin/metrics.rs
parent99f96b9564c9c841dc6c56f1255a6e70ff884d46 (diff)
parenta096ced35562bd0a8877a1ee2f755be1edafe343 (diff)
downloadgarage-829f815a897b04986559910bbcbf53625adcdf20.tar.gz
garage-829f815a897b04986559910bbcbf53625adcdf20.zip
Merge remote-tracking branch 'origin/main' into optimal-layout
Diffstat (limited to 'src/admin/metrics.rs')
-rw-r--r--src/admin/metrics.rs146
1 files changed, 0 insertions, 146 deletions
diff --git a/src/admin/metrics.rs b/src/admin/metrics.rs
deleted file mode 100644
index 7edc36c6..00000000
--- a/src/admin/metrics.rs
+++ /dev/null
@@ -1,146 +0,0 @@
-use std::convert::Infallible;
-use std::net::SocketAddr;
-use std::sync::Arc;
-use std::time::SystemTime;
-
-use futures::future::*;
-use hyper::{
- header::CONTENT_TYPE,
- service::{make_service_fn, service_fn},
- Body, Method, Request, Response, Server,
-};
-
-use opentelemetry::{
- global,
- metrics::{BoundCounter, BoundValueRecorder},
- trace::{FutureExt, TraceContextExt, Tracer},
- Context,
-};
-use opentelemetry_prometheus::PrometheusExporter;
-
-use prometheus::{Encoder, TextEncoder};
-
-use garage_util::error::Error as GarageError;
-use garage_util::metrics::*;
-
-// serve_req on metric endpoint
-async fn serve_req(
- req: Request<Body>,
- admin_server: Arc<AdminServer>,
-) -> Result<Response<Body>, hyper::Error> {
- debug!("Receiving request at path {}", req.uri());
- let request_start = SystemTime::now();
-
- admin_server.metrics.http_counter.add(1);
-
- let response = match (req.method(), req.uri().path()) {
- (&Method::GET, "/metrics") => {
- let mut buffer = vec![];
- let encoder = TextEncoder::new();
-
- let tracer = opentelemetry::global::tracer("garage");
- let metric_families = tracer.in_span("admin/gather_metrics", |_| {
- admin_server.exporter.registry().gather()
- });
-
- encoder.encode(&metric_families, &mut buffer).unwrap();
- admin_server
- .metrics
- .http_body_gauge
- .record(buffer.len() as u64);
-
- Response::builder()
- .status(200)
- .header(CONTENT_TYPE, encoder.format_type())
- .body(Body::from(buffer))
- .unwrap()
- }
- _ => Response::builder()
- .status(404)
- .body(Body::from("Not implemented"))
- .unwrap(),
- };
-
- admin_server
- .metrics
- .http_req_histogram
- .record(request_start.elapsed().map_or(0.0, |d| d.as_secs_f64()));
- Ok(response)
-}
-
-// AdminServer hold the admin server internal admin_server and the metric exporter
-pub struct AdminServer {
- exporter: PrometheusExporter,
- metrics: AdminServerMetrics,
-}
-
-// GarageMetricadmin_server holds the metrics counter definition for Garage
-// FIXME: we would rather have that split up among the different libraries?
-struct AdminServerMetrics {
- http_counter: BoundCounter<u64>,
- http_body_gauge: BoundValueRecorder<u64>,
- http_req_histogram: BoundValueRecorder<f64>,
-}
-
-impl AdminServer {
- /// init initilialize the AdminServer and background metric server
- pub fn init() -> AdminServer {
- let exporter = opentelemetry_prometheus::exporter().init();
- let meter = global::meter("garage/admin_server");
- AdminServer {
- exporter,
- metrics: AdminServerMetrics {
- http_counter: meter
- .u64_counter("admin.http_requests_total")
- .with_description("Total number of HTTP requests made.")
- .init()
- .bind(&[]),
- http_body_gauge: meter
- .u64_value_recorder("admin.http_response_size_bytes")
- .with_description("The metrics HTTP response sizes in bytes.")
- .init()
- .bind(&[]),
- http_req_histogram: meter
- .f64_value_recorder("admin.http_request_duration_seconds")
- .with_description("The HTTP request latencies in seconds.")
- .init()
- .bind(&[]),
- },
- }
- }
- /// run execute the admin server on the designated HTTP port and listen for requests
- pub async fn run(
- self,
- bind_addr: SocketAddr,
- shutdown_signal: impl Future<Output = ()>,
- ) -> Result<(), GarageError> {
- let admin_server = Arc::new(self);
- // For every connection, we must make a `Service` to handle all
- // incoming HTTP requests on said connection.
- let make_svc = make_service_fn(move |_conn| {
- let admin_server = admin_server.clone();
- // This is the `Service` that will handle the connection.
- // `service_fn` is a helper to convert a function that
- // returns a Response into a `Service`.
- async move {
- Ok::<_, Infallible>(service_fn(move |req| {
- let tracer = opentelemetry::global::tracer("garage");
- let span = tracer
- .span_builder("admin/request")
- .with_trace_id(gen_trace_id())
- .start(&tracer);
-
- serve_req(req, admin_server.clone())
- .with_context(Context::current_with_span(span))
- }))
- }
- });
-
- let server = Server::bind(&bind_addr).serve(make_svc);
- let graceful = server.with_graceful_shutdown(shutdown_signal);
- info!("Admin server listening on http://{}", bind_addr);
-
- graceful.await?;
- Ok(())
- }
-}