From 4611f1308ae29a6e86b32fa397a7aa54d9265b75 Mon Sep 17 00:00:00 2001
From: fryorcraken <110212804+fryorcraken@users.noreply.github.com>
Date: Sat, 3 Feb 2024 01:52:33 +1100
Subject: [PATCH] Add Postgres Dashboards using Prometheus source (#40)

---
 .../dashboards/nwaku-monitoring.json          | 149 +++++++++++++++---
 .../configuration/pg-exporter-queries.yml     |  10 ++
 2 files changed, 133 insertions(+), 26 deletions(-)

diff --git a/monitoring/configuration/dashboards/nwaku-monitoring.json b/monitoring/configuration/dashboards/nwaku-monitoring.json
index 08e5bd6..3cf424b 100644
--- a/monitoring/configuration/dashboards/nwaku-monitoring.json
+++ b/monitoring/configuration/dashboards/nwaku-monitoring.json
@@ -2649,7 +2649,7 @@
               }
             ]
           },
-          "unit": "short"
+          "unit": "none"
         },
         "overrides": []
       },
@@ -2911,13 +2911,110 @@
       ],
       "type": "table"
     },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "PBFA97CFB590B2093"
+      },
+      "description": "Number of messages currently stored in the database",
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisBorderShow": false,
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 0,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "auto",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              }
+            ]
+          },
+          "unit": "none"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 7,
+        "w": 9,
+        "x": 0,
+        "y": 77
+      },
+      "id": 146,
+      "options": {
+        "legend": {
+          "calcs": [
+            "last"
+          ],
+          "displayMode": "list",
+          "placement": "bottom",
+          "showLegend": true
+        },
+        "tooltip": {
+          "mode": "single",
+          "sort": "none"
+        }
+      },
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "PBFA97CFB590B2093"
+          },
+          "editorMode": "code",
+          "exemplar": false,
+          "expr": "pg_tb_messages_count{}",
+          "instant": false,
+          "interval": "",
+          "legendFormat": "messages",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Unique stored messages (Postgres)",
+      "type": "timeseries"
+    },
     {
       "collapsed": false,
       "gridPos": {
         "h": 1,
         "w": 24,
         "x": 0,
-        "y": 77
+        "y": 84
       },
       "id": 46,
       "panels": [],
@@ -2956,7 +3053,7 @@
         "h": 3,
         "w": 4,
         "x": 0,
-        "y": 78
+        "y": 85
       },
       "id": 11,
       "links": [],
@@ -3068,7 +3165,7 @@
         "h": 3,
         "w": 4,
         "x": 4,
-        "y": 78
+        "y": 85
       },
       "id": 14,
       "interval": "",
@@ -3182,7 +3279,7 @@
         "h": 3,
         "w": 4,
         "x": 8,
-        "y": 78
+        "y": 85
       },
       "id": 93,
       "links": [],
@@ -3295,7 +3392,7 @@
         "h": 3,
         "w": 4,
         "x": 12,
-        "y": 78
+        "y": 85
       },
       "id": 102,
       "links": [],
@@ -3406,7 +3503,7 @@
         "h": 3,
         "w": 4,
         "x": 16,
-        "y": 78
+        "y": 85
       },
       "id": 37,
       "links": [],
@@ -3517,7 +3614,7 @@
         "h": 3,
         "w": 4,
         "x": 20,
-        "y": 78
+        "y": 85
       },
       "id": 84,
       "links": [],
@@ -3594,7 +3691,7 @@
         "h": 7,
         "w": 3,
         "x": 0,
-        "y": 81
+        "y": 88
       },
       "id": 140,
       "libraryPanel": {
@@ -3645,7 +3742,7 @@
         "h": 7,
         "w": 3,
         "x": 3,
-        "y": 81
+        "y": 88
       },
       "id": 16,
       "links": [],
@@ -3716,7 +3813,7 @@
         "h": 7,
         "w": 3,
         "x": 6,
-        "y": 81
+        "y": 88
       },
       "id": 9,
       "links": [],
@@ -3787,7 +3884,7 @@
         "h": 7,
         "w": 3,
         "x": 9,
-        "y": 81
+        "y": 88
       },
       "id": 15,
       "links": [],
@@ -3857,7 +3954,7 @@
         "h": 3,
         "w": 4,
         "x": 12,
-        "y": 81
+        "y": 88
       },
       "id": 23,
       "links": [],
@@ -3955,7 +4052,7 @@
         "h": 3,
         "w": 4,
         "x": 16,
-        "y": 81
+        "y": 88
       },
       "id": 125,
       "options": {
@@ -4055,7 +4152,7 @@
         "h": 8,
         "w": 12,
         "x": 12,
-        "y": 84
+        "y": 91
       },
       "id": 142,
       "options": {
@@ -4131,7 +4228,7 @@
         "h": 9,
         "w": 12,
         "x": 0,
-        "y": 88
+        "y": 95
       },
       "hiddenSeries": false,
       "id": 24,
@@ -4215,7 +4312,7 @@
         "h": 8,
         "w": 12,
         "x": 12,
-        "y": 92
+        "y": 99
       },
       "id": 145,
       "libraryPanel": {
@@ -4244,7 +4341,7 @@
         "h": 9,
         "w": 12,
         "x": 0,
-        "y": 97
+        "y": 104
       },
       "hiddenSeries": false,
       "id": 122,
@@ -4342,7 +4439,7 @@
         "h": 9,
         "w": 12,
         "x": 12,
-        "y": 100
+        "y": 107
       },
       "hiddenSeries": false,
       "id": 121,
@@ -4440,7 +4537,7 @@
         "h": 9,
         "w": 12,
         "x": 0,
-        "y": 106
+        "y": 113
       },
       "hiddenSeries": false,
       "id": 26,
@@ -4534,7 +4631,7 @@
         "h": 9,
         "w": 12,
         "x": 12,
-        "y": 109
+        "y": 116
       },
       "hiddenSeries": false,
       "id": 27,
@@ -4635,7 +4732,7 @@
         "h": 10,
         "w": 12,
         "x": 0,
-        "y": 115
+        "y": 122
       },
       "hiddenSeries": false,
       "id": 123,
@@ -4726,7 +4823,7 @@
         "h": 9,
         "w": 12,
         "x": 12,
-        "y": 118
+        "y": 125
       },
       "hiddenSeries": false,
       "id": 111,
@@ -4821,7 +4918,7 @@
         "h": 10,
         "w": 12,
         "x": 0,
-        "y": 125
+        "y": 132
       },
       "hiddenSeries": false,
       "id": 120,
@@ -4912,7 +5009,7 @@
         "h": 5,
         "w": 12,
         "x": 12,
-        "y": 127
+        "y": 134
       },
       "hiddenSeries": false,
       "id": 30,
@@ -5008,7 +5105,7 @@
         "h": 5,
         "w": 12,
         "x": 12,
-        "y": 132
+        "y": 139
       },
       "hiddenSeries": false,
       "id": 31,
diff --git a/monitoring/configuration/pg-exporter-queries.yml b/monitoring/configuration/pg-exporter-queries.yml
index 5b65a1b..bb1d732 100644
--- a/monitoring/configuration/pg-exporter-queries.yml
+++ b/monitoring/configuration/pg-exporter-queries.yml
@@ -272,3 +272,13 @@ pg_tb_stats:
     - messages:
         usage: "GAUGE"
         description: "Number of messages for the given pubsub topic"
+
+pg_tb_messages:
+  query: |
+    SELECT
+      COUNT(ID)
+    FROM messages
+  metrics:
+    - count:
+        usage: "GAUGE"
+        description: "Row count in `messages` table"