metrics: dashboard: include revisions graph.

metrics.py

@@ -497,6 +497,14 @@ def ingest_dashboard(api):
                     'time': time,
                 })
 
+        points.append({
+            'measurement': 'dashboard_revision',
+            'fields': {
+                'revision': revision,
+            },
+            'time': time,
+        })
+
         if len(points) >= 1000:
             client.write_points(points, 's')
             count += len(points)

metrics/grafana/dashboard.json

@@ -571,6 +571,118 @@
           "show": true
         }
       ]
+    },
+    {
+      "aliasColors": {},
+      "bars": true,
+      "dashLength": 10,
+      "dashes": false,
+      "datasource": "$project",
+      "description": "The number of revisions to dashboard container made during a week.",
+      "fill": 1,
+      "gridPos": {
+        "h": 9,
+        "w": 24,
+        "x": 0,
+        "y": 36
+      },
+      "id": 7,
+      "legend": {
+        "avg": false,
+        "current": false,
+        "max": false,
+        "min": false,
+        "show": false,
+        "total": false,
+        "values": false
+      },
+      "lines": false,
+      "linewidth": 1,
+      "links": [],
+      "nullPointMode": "null",
+      "percentage": false,
+      "pointradius": 5,
+      "points": false,
+      "renderer": "flot",
+      "seriesOverrides": [],
+      "spaceLength": 10,
+      "stack": false,
+      "steppedLine": false,
+      "targets": [
+        {
+          "alias": "$col",
+          "groupBy": [
+            {
+              "params": [
+                "1w"
+              ],
+              "type": "time"
+            }
+          ],
+          "measurement": "dashboard_revision",
+          "orderByTime": "ASC",
+          "policy": "default",
+          "refId": "A",
+          "resultFormat": "time_series",
+          "select": [
+            [
+              {
+                "params": [
+                  "revision"
+                ],
+                "type": "field"
+              },
+              {
+                "params": [],
+                "type": "count"
+              },
+              {
+                "params": [
+                  "count"
+                ],
+                "type": "alias"
+              }
+            ]
+          ],
+          "tags": []
+        }
+      ],
+      "thresholds": [],
+      "timeFrom": null,
+      "timeShift": null,
+      "title": "Weekly Revisions",
+      "tooltip": {
+        "shared": true,
+        "sort": 0,
+        "value_type": "individual"
+      },
+      "type": "graph",
+      "xaxis": {
+        "buckets": null,
+        "mode": "time",
+        "name": null,
+        "show": true,
+        "values": []
+      },
+      "yaxes": [
+        {
+          "decimals": null,
+          "format": "short",
+          "label": "",
+          "logBase": 1,
+          "max": "7",
+          "min": null,
+          "show": true
+        },
+        {
+          "format": "short",
+          "label": null,
+          "logBase": 1,
+          "max": null,
+          "min": null,
+          "show": true
+        }
+      ]
     }
   ],
   "refresh": false,