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| author | Mendes <mendes.oulamara@pm.me> | 2022-10-04 18:14:49 +0200 |
|---|---|---|
| committer | Mendes <mendes.oulamara@pm.me> | 2022-10-04 18:14:49 +0200 |
| commit | 829f815a897b04986559910bbcbf53625adcdf20 (patch) | |
| tree | 6db3c27cff2aded754a641d1f2b05c83be701267 /src/admin/metrics.rs | |
| parent | 99f96b9564c9c841dc6c56f1255a6e70ff884d46 (diff) | |
| parent | a096ced35562bd0a8877a1ee2f755be1edafe343 (diff) | |
| download | garage-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.rs | 146 |
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(()) - } -} |