apollo_infra: move metrics initialization to apollo_infra

crates/apollo_dashboard/Cargo.toml

@@ -31,7 +31,6 @@ apollo_l1_provider.workspace = true
 apollo_mempool.workspace = true
 apollo_mempool_p2p.workspace = true
 apollo_metrics.workspace = true
-apollo_monitoring_endpoint.workspace = true
 apollo_network.workspace = true
 apollo_state_sync_metrics.workspace = true
 apollo_storage.workspace = true

crates/apollo_dashboard/src/alert_scenarios/transaction_delays.rs

@@ -1,8 +1,8 @@
 use apollo_batcher::metrics::NUM_TRANSACTION_IN_BLOCK;
 use apollo_http_server::metrics::HTTP_SERVER_ADD_TX_LATENCY;
+use apollo_infra::metrics::HISTOGRAM_BUCKETS;
 use apollo_mempool_p2p::metrics::MEMPOOL_P2P_NUM_CONNECTED_PEERS;
 use apollo_metrics::metrics::MetricQueryName;
-use apollo_monitoring_endpoint::monitoring_endpoint::HISTOGRAM_BUCKETS;
 
 use crate::alerts::{
     Alert,

crates/apollo_infra/Cargo.toml

@@ -18,6 +18,7 @@ apollo_infra_utils.workspace = true
 apollo_metrics.workspace = true
 async-trait.workspace = true
 hyper = { workspace = true, features = ["client", "http2", "server", "tcp"] }
+metrics-exporter-prometheus.workspace = true
 rstest.workspace = true
 serde = { workspace = true, features = ["derive"] }
 serde_json.workspace = true

crates/apollo_infra/src/metrics.rs

@@ -3,10 +3,18 @@ use apollo_metrics::metrics::{
     MetricCounter,
     MetricGauge,
     MetricHistogram,
+    COLLECT_SEQUENCER_PROFILING_METRICS,
 };
+use metrics_exporter_prometheus::{PrometheusBuilder, PrometheusHandle};
 use serde::{Deserialize, Serialize};
 
 use crate::requests::LABEL_NAME_REQUEST_VARIANT;
+use crate::tokio_metrics::setup_tokio_metrics;
+
+pub const HISTOGRAM_BUCKETS: &[f64] = &[
+    0.001, 0.0025, 0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1.0, 2.5, 5.0, 10.0, 25.0, 50.0,
+    100.0, 250.0,
+];
 
 /// Configuration for metrics collection.
 #[derive(Clone, Copy, Debug, Default, Serialize, Deserialize, PartialEq)]
@@ -29,6 +37,45 @@ impl MetricsConfig {
     }
 }
 
+/// Initializes the metrics recorder and tokio metrics if metrics collection is enabled.
+/// This should be called once during application startup, before creating components that use
+/// metrics.
+///
+/// Returns a PrometheusHandle if metrics collection is enabled, None otherwise.
+///
+/// # Example
+/// ```no_run
+/// use apollo_infra::metrics::{initialize_metrics_recorder, MetricsConfig};
+///
+/// let config = MetricsConfig::enabled();
+/// let prometheus_handle = initialize_metrics_recorder(config);
+/// ```
+pub fn initialize_metrics_recorder(config: MetricsConfig) -> Option<PrometheusHandle> {
+    // TODO(Tsabary): consider error handling
+    let prometheus_handle = if config.collect_metrics {
+        // TODO(Lev): add tests that show the metrics are collected / not collected based on the
+        // config value.
+        COLLECT_SEQUENCER_PROFILING_METRICS
+            .set(config.collect_profiling_metrics)
+            .expect("Should be able to set profiling metrics collection.");
+
+        Some(
+            PrometheusBuilder::new()
+                .set_buckets(HISTOGRAM_BUCKETS)
+                .expect("Should be able to set buckets")
+                .install_recorder()
+                .expect("should be able to build the recorder and install it globally"),
+        )
+    } else {
+        None
+    };
+
+    // Setup tokio metrics along with other metrics initialization
+    setup_tokio_metrics();
+
+    prometheus_handle
+}
+
 /// Metrics of a local client.
 #[derive(Clone)]
 pub struct LocalClientMetrics {

crates/apollo_infra/src/tokio_metrics.rs

@@ -26,7 +26,7 @@ define_metrics!(
 
 /// Start the tokio runtime metrics reporter to automatically collect and export tokio runtime
 /// metrics
-pub fn setup_tokio_metrics() {
+pub(crate) fn setup_tokio_metrics() {
     tokio::spawn(
         RuntimeMetricsReporterBuilder::default()
             .with_interval(Duration::from_secs(TOKIO_REPORTING_INTERVAL_SECONDS))

crates/apollo_monitoring_endpoint/src/monitoring_endpoint.rs

@@ -1,22 +1,20 @@
 use std::net::SocketAddr;
 
 use apollo_infra::component_definitions::ComponentStarter;
-use apollo_infra::metrics::MetricsConfig;
-use apollo_infra::tokio_metrics::setup_tokio_metrics;
+use apollo_infra::metrics::{initialize_metrics_recorder, MetricsConfig};
 use apollo_infra::trace_util::{configure_tracing, get_log_directives, set_log_level};
 use apollo_infra_utils::type_name::short_type_name;
 use apollo_l1_provider_types::{L1ProviderSnapshot, SharedL1ProviderClient};
 use apollo_mempool_types::communication::SharedMempoolClient;
 use apollo_mempool_types::mempool_types::MempoolSnapshot;
-use apollo_metrics::metrics::COLLECT_SEQUENCER_PROFILING_METRICS;
 use apollo_monitoring_endpoint_config::config::MonitoringEndpointConfig;
 use axum::extract::Path;
 use axum::http::StatusCode;
 use axum::response::{IntoResponse, Response};
 use axum::routing::{get, post};
 use axum::{async_trait, Json, Router, Server};
 use hyper::Error;
-use metrics_exporter_prometheus::{PrometheusBuilder, PrometheusHandle};
+use metrics_exporter_prometheus::PrometheusHandle;
 use tracing::level_filters::LevelFilter;
 use tracing::{error, info, instrument};
 
@@ -34,11 +32,6 @@ pub(crate) const L1_PROVIDER_SNAPSHOT: &str = "l1ProviderSnapshot";
 pub(crate) const SET_LOG_LEVEL: &str = "setLogLevel";
 pub(crate) const LOG_LEVEL: &str = "logLevel";
 
-pub const HISTOGRAM_BUCKETS: &[f64] = &[
-    0.001, 0.0025, 0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1.0, 2.5, 5.0, 10.0, 25.0, 50.0,
-    100.0, 250.0,
-];
-
 pub struct MonitoringEndpoint {
     config: MonitoringEndpointConfig,
     version: &'static str,
@@ -51,28 +44,10 @@ impl MonitoringEndpoint {
     pub fn new(
         config: MonitoringEndpointConfig,
         version: &'static str,
-        metrics_config: MetricsConfig,
+        prometheus_handle: Option<PrometheusHandle>,
         mempool_client: Option<SharedMempoolClient>,
         l1_provider_client: Option<SharedL1ProviderClient>,
     ) -> Self {
-        // TODO(Tsabary): consider error handling
-        let prometheus_handle = if metrics_config.collect_metrics {
-            // TODO(Lev): add tests that show the metrics are collected / not collected based on the
-            // config value.
-            COLLECT_SEQUENCER_PROFILING_METRICS
-                .set(metrics_config.collect_profiling_metrics)
-                .expect("Should be able to set profiling metrics collection.");
-
-            Some(
-                PrometheusBuilder::new()
-                    .set_buckets(HISTOGRAM_BUCKETS)
-                    .expect("Should be able to set buckets")
-                    .install_recorder()
-                    .expect("should be able to build the recorder and install it globally"),
-            )
-        } else {
-            None
-        };
         MonitoringEndpoint {
             config,
             version,
@@ -141,24 +116,15 @@ impl MonitoringEndpoint {
     }
 }
 
-// TODO(tsabary): finalize the separation of the metrics recorder initialization and the monitoring
-// endpoint setup
 pub fn create_monitoring_endpoint(
     config: MonitoringEndpointConfig,
     version: &'static str,
     metrics_config: MetricsConfig,
     mempool_client: Option<SharedMempoolClient>,
     l1_provider_client: Option<SharedL1ProviderClient>,
 ) -> MonitoringEndpoint {
-    let result = MonitoringEndpoint::new(
-        config,
-        version,
-        metrics_config,
-        mempool_client,
-        l1_provider_client,
-    );
-    setup_tokio_metrics();
-    result
+    let prometheus_handle = initialize_metrics_recorder(metrics_config);
+    MonitoringEndpoint::new(config, version, prometheus_handle, mempool_client, l1_provider_client)
 }
 
 #[async_trait]