Files
aralez/src/utils/metrics.rs
2026-01-25 18:08:15 +01:00

73 lines
2.7 KiB
Rust

use http::method::Method;
use pingora_http::Version;
use prometheus::{register_histogram, register_int_counter, register_int_counter_vec, Histogram, IntCounter, IntCounterVec};
use std::sync::Arc;
use std::time::Duration;
pub struct MetricTypes {
pub method: Method,
pub upstream: Arc<str>,
pub code: String,
pub latency: Duration,
pub version: Version,
}
lazy_static::lazy_static! {
pub static ref REQUEST_COUNT: IntCounter = register_int_counter!(
"aralez_requests_total",
"Total number of requests handled by Aralez"
).unwrap();
pub static ref RESPONSE_CODES: IntCounterVec = register_int_counter_vec!(
"aralez_responses_total",
"Responses grouped by status code",
&["status"]
).unwrap();
pub static ref REQUEST_LATENCY: Histogram = register_histogram!(
"aralez_request_latency_seconds",
"Request latency in seconds",
vec![0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1.0, 2.5, 5.0]
).unwrap();
pub static ref RESPONSE_LATENCY: Histogram = register_histogram!(
"aralez_response_latency_seconds",
"Response latency in seconds",
vec![0.01, 0.05, 0.1, 0.25, 0.5, 1.0, 2.0, 5.0]
).unwrap();
pub static ref REQUESTS_BY_METHOD: IntCounterVec = register_int_counter_vec!(
"aralez_requests_by_method_total",
"Number of requests by HTTP method",
&["method"]
).unwrap();
pub static ref REQUESTS_BY_UPSTREAM: IntCounterVec = register_int_counter_vec!(
"aralez_requests_by_upstream",
"Number of requests by UPSTREAM server",
&["method"]
).unwrap();
pub static ref REQUESTS_BY_VERSION: IntCounterVec = register_int_counter_vec!(
"aralez_requests_by_version_total",
"Number of requests by HTTP versions",
&["version"]
).unwrap();
pub static ref ERROR_COUNT: IntCounter = register_int_counter!(
"aralez_errors_total",
"Total number of errors"
).unwrap();
}
pub fn calc_metrics(metric_types: &MetricTypes) {
REQUEST_COUNT.inc();
let timer = REQUEST_LATENCY.start_timer();
timer.observe_duration();
let version_str = match &metric_types.version {
&Version::HTTP_11 => "HTTP/1.1",
&Version::HTTP_2 => "HTTP/2.0",
&Version::HTTP_3 => "HTTP/3.0",
&Version::HTTP_10 => "HTTP/1.0",
_ => "Unknown",
};
REQUESTS_BY_VERSION.with_label_values(&[&version_str]).inc();
RESPONSE_CODES.with_label_values(&[&metric_types.code]).inc();
REQUESTS_BY_METHOD.with_label_values(&[&metric_types.method]).inc();
REQUESTS_BY_UPSTREAM.with_label_values(&[metric_types.upstream.as_ref()]).inc();
RESPONSE_LATENCY.observe(metric_types.latency.as_secs_f64());
}