Move Prometheus metrics endpoint to /api/v1/metrics (#289)

Author: nitisht

server/src/main.rs

@@ -363,6 +363,10 @@ fn ingest_path() -> String {
     "/ingest".to_string()
 }
 
+pub fn metrics_path() -> String {
+    format!("{}/metrics", base_path())
+}
+
 fn alert_path(stream_name: &str) -> String {
     format!("{}/alert", logstream_path(stream_name))
 }

server/src/metrics/mod.rs

@@ -22,7 +22,7 @@ use actix_web_prometheus::{PrometheusMetrics, PrometheusMetricsBuilder};
 use lazy_static::lazy_static;
 use prometheus::{HistogramOpts, HistogramVec, IntCounterVec, IntGaugeVec, Opts, Registry};
 
-use crate::metadata::STREAM_INFO;
+use crate::{metadata::STREAM_INFO, metrics_path};
 
 pub const METRICS_NAMESPACE: &str = env!("CARGO_PKG_NAME");
 
@@ -87,7 +87,7 @@ pub fn build_metrics_handler() -> PrometheusMetrics {
 
     let prometheus = PrometheusMetricsBuilder::new(METRICS_NAMESPACE)
         .registry(registry)
-        .endpoint("/metrics")
+        .endpoint(metrics_path().as_str())
         .build()
         .expect("Prometheus initialization");