apiVersion: v1
kind: ConfigMap
metadata:
  name: grafana-dashboard-vin-decoder
  namespace: monitoring
  labels:
    grafana_dashboard: "1"
data:
  vin-decoder-dashboard.json: |
    {
      "annotations": { "list": [] },
      "description": "Request rate, latency, error rate, and cache hit ratio for the VIN Decoder API",
      "editable": true,
      "graphTooltip": 1,
      "panels": [
        {
          "collapsed": false,
          "gridPos": { "h": 1, "w": 24, "x": 0, "y": 0 },
          "id": 1,
          "title": "VIN Decoder — Request Rate",
          "type": "row"
        },
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "fieldConfig": {
            "defaults": {
              "color": { "mode": "palette-classic" },
              "custom": { "axisLabel": "requests/sec", "drawStyle": "line", "fillOpacity": 10, "lineWidth": 1, "showPoints": "never" },
              "unit": "reqps"
            },
            "overrides": []
          },
          "gridPos": { "h": 8, "w": 12, "x": 0, "y": 1 },
          "id": 2,
          "options": {
            "legend": { "calcs": ["mean", "max"], "displayMode": "table", "placement": "bottom" },
            "tooltip": { "mode": "multi" }
          },
          "targets": [
            {
              "expr": "sum by (route) (rate(api_requests_total{api=\"vin-decoder\"}[5m]))",
              "legendFormat": "{{route}}",
              "refId": "A"
            }
          ],
          "title": "Request Rate by Route",
          "type": "timeseries"
        },
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "fieldConfig": {
            "defaults": {
              "color": { "mode": "palette-classic" },
              "custom": { "axisLabel": "", "drawStyle": "line", "fillOpacity": 10, "lineWidth": 1, "showPoints": "never" },
              "unit": "percentunit"
            },
            "overrides": []
          },
          "gridPos": { "h": 8, "w": 12, "x": 12, "y": 1 },
          "id": 3,
          "options": {
            "legend": { "calcs": ["mean", "last"], "displayMode": "table", "placement": "bottom" },
            "tooltip": { "mode": "multi" }
          },
          "targets": [
            {
              "expr": "sum(rate(api_requests_total{api=\"vin-decoder\",status_code=~\"5..\"}[5m])) / sum(rate(api_requests_total{api=\"vin-decoder\"}[5m]))",
              "legendFormat": "5xx error rate",
              "refId": "A"
            }
          ],
          "title": "5xx Error Rate",
          "type": "timeseries"
        },
        {
          "collapsed": false,
          "gridPos": { "h": 1, "w": 24, "x": 0, "y": 9 },
          "id": 10,
          "title": "VIN Decoder — Latency",
          "type": "row"
        },
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "fieldConfig": {
            "defaults": {
              "color": { "mode": "palette-classic" },
              "custom": { "axisLabel": "seconds", "drawStyle": "line", "fillOpacity": 5, "lineWidth": 1, "showPoints": "never" },
              "unit": "s"
            },
            "overrides": []
          },
          "gridPos": { "h": 8, "w": 24, "x": 0, "y": 10 },
          "id": 4,
          "options": {
            "legend": { "calcs": ["mean", "max"], "displayMode": "table", "placement": "bottom" },
            "tooltip": { "mode": "multi" }
          },
          "targets": [
            {
              "expr": "histogram_quantile(0.50, sum by (route, le) (rate(api_response_duration_seconds_bucket{api=\"vin-decoder\"}[5m])))",
              "legendFormat": "P50 {{route}}",
              "refId": "A"
            },
            {
              "expr": "histogram_quantile(0.95, sum by (route, le) (rate(api_response_duration_seconds_bucket{api=\"vin-decoder\"}[5m])))",
              "legendFormat": "P95 {{route}}",
              "refId": "B"
            },
            {
              "expr": "histogram_quantile(0.99, sum by (route, le) (rate(api_response_duration_seconds_bucket{api=\"vin-decoder\"}[5m])))",
              "legendFormat": "P99 {{route}}",
              "refId": "C"
            }
          ],
          "title": "Response Latency P50 / P95 / P99 by Route",
          "type": "timeseries"
        },
        {
          "collapsed": false,
          "gridPos": { "h": 1, "w": 24, "x": 0, "y": 18 },
          "id": 20,
          "title": "VIN Decoder — Cache & Data Freshness",
          "type": "row"
        },
        {
          "datasource": { "type": "prometheus", "uid": "prometheus" },
          "fieldConfig": {
            "defaults": {
              "color": { "mode": "thresholds" },
              "thresholds": {
                "steps": [
                  { "color": "green", "value": null },
                  { "color": "yellow", "value": 2592000 },
                  { "color": "red", "value": 5184000 }
                ]
              },
              "unit": "s"
            },
            "overrides": []
          },
          "gridPos": { "h": 8, "w": 12, "x": 0, "y": 19 },
          "id": 5,
          "options": { "reduceOptions": { "calcs": ["lastNotNull"] }, "orientation": "auto", "textMode": "auto", "colorMode": "background" },
          "targets": [
            {
              "expr": "api_data_freshness_seconds{api=\"vin-decoder\"}",
              "legendFormat": "data freshness",
              "refId": "A"
            }
          ],
          "title": "Data Freshness (seconds since last NHTSA fetch)",
          "type": "stat"
        }
      ],
      "refresh": "1m",
      "schemaVersion": 38,
      "tags": ["vin-decoder", "api-company"],
      "title": "VIN Decoder API",
      "uid": "vin-decoder-api",
      "version": 1
    }