add RELAY_LAST_SLOT metric

crates/pbs/src/metrics.rs

@@ -5,8 +5,8 @@
 
 use lazy_static::lazy_static;
 use prometheus::{
-    register_histogram_vec_with_registry, register_int_counter_vec_with_registry, HistogramVec,
-    IntCounterVec, Registry,
+    register_histogram_vec_with_registry, register_int_counter_vec_with_registry,
+    register_int_gauge_vec_with_registry, HistogramVec, IntCounterVec, IntGaugeVec, Registry,
 };
 
 lazy_static! {
@@ -32,6 +32,15 @@ lazy_static! {
     )
     .unwrap();
 
+    /// Latest slot for which relay delivered a header
+    pub static ref RELAY_LAST_SLOT: IntGaugeVec = register_int_gauge_vec_with_registry!(
+        "relay_last_slot",
+        "Latest slot for which relay delivered a header",
+        &["relay_id"],
+        PBS_METRICS_REGISTRY
+    )
+    .unwrap();
+
     // TO BEACON NODE
     /// Status code returned to beacon node by endpoint
     pub static ref BEACON_NODE_STATUS: IntCounterVec = register_int_counter_vec_with_registry!(

crates/pbs/src/mev_boost/get_header.rs

@@ -25,7 +25,7 @@ use url::Url;
 
 use crate::{
     constants::{GET_HEADER_ENDPOINT_TAG, TIMEOUT_ERROR_CODE, TIMEOUT_ERROR_CODE_STR},
-    metrics::{RELAY_LATENCY, RELAY_STATUS_CODE},
+    metrics::{RELAY_LAST_SLOT, RELAY_LATENCY, RELAY_STATUS_CODE},
     state::{BuilderApiState, PbsState},
 };
 
@@ -79,7 +79,10 @@ pub async fn get_header<S: BuilderApiState>(
         let relay_id = relays[i].id.as_ref();
 
         match res {
-            Ok(Some(res)) => relay_bids.push(res),
+            Ok(Some(res)) => {
+                RELAY_LAST_SLOT.with_label_values(&[relay_id]).set(params.slot as i64);
+                relay_bids.push(res)
+            }
             Ok(_) => {}
             Err(err) if err.is_timeout() => error!(err = "Timed Out", relay_id),
             Err(err) => error!(?err, relay_id),

grafana/dashboards/dashboard.json

@@ -18,16 +18,94 @@
   "editable": true,
   "fiscalYearStartMonth": 0,
   "graphTooltip": 0,
+  "id": 1,
   "links": [],
   "liveNow": true,
   "panels": [
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "cb_prometheus"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "fixedColor": "red",
+            "mode": "thresholds"
+          },
+          "fieldMinMax": false,
+          "mappings": [],
+          "thresholds": {
+            "mode": "percentage",
+            "steps": [
+              {
+                "color": "yellow",
+                "value": null
+              },
+              {
+                "color": "green",
+                "value": 100
+              }
+            ]
+          }
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 11,
+        "w": 6,
+        "x": 0,
+        "y": 0
+      },
+      "id": 61,
+      "options": {
+        "colorMode": "value",
+        "graphMode": "area",
+        "justifyMode": "auto",
+        "orientation": "horizontal",
+        "percentChangeColorMode": "standard",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "showPercentChange": false,
+        "textMode": "auto",
+        "wideLayout": true
+      },
+      "pluginVersion": "11.1.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "cb_prometheus"
+          },
+          "disableTextWrap": false,
+          "editorMode": "code",
+          "exemplar": false,
+          "expr": "cb_pbs_relay_last_slot",
+          "format": "time_series",
+          "fullMetaSearch": false,
+          "includeNullMetadata": true,
+          "instant": false,
+          "legendFormat": "{{relay_id}}",
+          "range": true,
+          "refId": "A",
+          "useBackend": false
+        }
+      ],
+      "title": "Last delivered slot",
+      "type": "stat"
+    },
     {
       "collapsed": false,
       "gridPos": {
         "h": 1,
         "w": 24,
         "x": 0,
-        "y": 0
+        "y": 11
       },
       "id": 12,
       "panels": [],
@@ -103,7 +181,7 @@
         "h": 11,
         "w": 6,
         "x": 0,
-        "y": 1
+        "y": 12
       },
       "id": 11,
       "options": {
@@ -202,7 +280,7 @@
         "h": 11,
         "w": 6,
         "x": 6,
-        "y": 1
+        "y": 12
       },
       "id": 13,
       "options": {
@@ -301,7 +379,7 @@
         "h": 11,
         "w": 6,
         "x": 12,
-        "y": 1
+        "y": 12
       },
       "id": 43,
       "options": {
@@ -400,7 +478,7 @@
         "h": 11,
         "w": 6,
         "x": 18,
-        "y": 1
+        "y": 12
       },
       "id": 44,
       "options": {
@@ -500,7 +578,7 @@
         "h": 11,
         "w": 6,
         "x": 0,
-        "y": 12
+        "y": 23
       },
       "id": 20,
       "options": {
@@ -604,7 +682,7 @@
         "h": 11,
         "w": 6,
         "x": 6,
-        "y": 12
+        "y": 23
       },
       "id": 29,
       "options": {
@@ -708,7 +786,7 @@
         "h": 11,
         "w": 6,
         "x": 12,
-        "y": 12
+        "y": 23
       },
       "id": 30,
       "options": {
@@ -767,6 +845,11 @@
             "text": "All",
             "value": "$__all"
           },
+          {
+            "selected": false,
+            "text": "register_validator",
+            "value": "register_validator"
+          },
           {
             "selected": false,
             "text": "get_header",
@@ -776,11 +859,6 @@
             "selected": false,
             "text": "submit_blinded_block",
             "value": "submit_blinded_block"
-          },
-          {
-            "selected": false,
-            "text": "register_validator",
-            "value": "register_validator"
           }
         ],
         "query": "register_validator, get_header, submit_blinded_block",
@@ -798,6 +876,6 @@
   "timezone": "browser",
   "title": "PBS Metrics",
   "uid": "cb_prometheus",
-  "version": 1,
+  "version": 2,
   "weekStart": ""
 }