feat(cat-gateway): Invalid RBAC registration metric counter (#3175)

* wip

* wip

Author: Mr-Leshiy

catalyst-gateway/bin/src/db/index/block/rbac509/mod.rs

@@ -22,6 +22,7 @@ use crate::{
         queries::{FallibleQueryTasks, PreparedQuery, SizedBatch},
         session::CassandraSession,
     },
+    metrics,
     settings::cassandra_db::EnvVars,
 };
 
@@ -145,6 +146,7 @@ impl Rbac509InsertQuery {
                 }
             },
             Err(report) => {
+                metrics::rbac::inc_invalid_rbac_reg_count();
                 self.invalid.push(insert_rbac509_invalid::Params::new(
                     catalyst_id,
                     txn_hash,

catalyst-gateway/bin/src/metrics/mod.rs

@@ -8,6 +8,7 @@ pub(crate) mod chain_indexer;
 pub(crate) mod endpoint;
 pub(crate) mod health;
 pub(crate) mod memory;
+pub(crate) mod rbac;
 
 /// Initialize Prometheus metrics.
 ///

catalyst-gateway/bin/src/metrics/rbac.rs

@@ -0,0 +1,37 @@
+//! Metrics related to RBAC Registration Chain analytics.
+
+use crate::settings::Settings;
+
+/// Increments the `INVALID_RBAC_REGISTRATION_COUNT` metric.
+pub(crate) fn inc_invalid_rbac_reg_count() {
+    let api_host_names = Settings::api_host_names().join(",");
+    let service_id = Settings::service_id();
+    let network = Settings::cardano_network().to_string();
+
+    reporter::INVALID_RBAC_REGISTRATION_COUNT
+        .with_label_values(&[&api_host_names, service_id, &network])
+        .inc();
+}
+
+/// All the related RBAC Registration Chain metrics to the Prometheus
+/// service are inside this module.
+pub(crate) mod reporter {
+    use std::sync::LazyLock;
+
+    use prometheus::{register_int_counter_vec, IntCounterVec};
+
+    /// Labels for the metrics.
+    const METRIC_LABELS: [&str; 3] = ["api_host_names", "service_id", "network"];
+
+    /// This counter increases every when we found invalid RBAC registration during
+    /// indexing.
+    pub(crate) static INVALID_RBAC_REGISTRATION_COUNT: LazyLock<IntCounterVec> =
+        LazyLock::new(|| {
+            register_int_counter_vec!(
+                "invalid_rbac_registration_count",
+                "Number of Invalid RBAC registrations found during indexing",
+                &METRIC_LABELS
+            )
+            .unwrap()
+        });
+}