Track firmware version

[longzheng]

Following discussion #109 (comment)

I wanted a way to track the Powerwall firmware version.

I added this to telegraf.local to poll for the version using the /api/status endpoint

[[inputs.http]]
      urls = [
              "http://pypowerwall:8675/api/status"
      ]
      name_override = "version"
      method = "GET"
      insecure_skip_verify = true
      timeout = "4s"
      data_format = "json"
      json_string_fields = ["version"]

I also added a custom dashboard using the state timeline visualizer

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": {
          "type": "grafana",
          "uid": "-- Grafana --"
        },
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "target": {
          "limit": 100,
          "matchAny": false,
          "tags": [],
          "type": "dashboard"
        },
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "fiscalYearStartMonth": 0,
  "graphTooltip": 0,
  "id": 2,
  "links": [],
  "liveNow": false,
  "panels": [
    {
      "datasource": {
        "type": "influxdb",
        "uid": "DcjAISH4k"
      },
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "continuous-GrYlRd"
          },
          "custom": {
            "fillOpacity": 70,
            "lineWidth": 0,
            "spanNulls": false
          },
          "displayName": "version",
          "mappings": [],
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              },
              {
                "color": "red",
                "value": 80
              }
            ]
          }
        },
        "overrides": []
      },
      "gridPos": {
        "h": 9,
        "w": 12,
        "x": 0,
        "y": 0
      },
      "id": 2,
      "options": {
        "alignValue": "left",
        "legend": {
          "displayMode": "list",
          "placement": "bottom",
          "showLegend": true
        },
        "mergeValues": true,
        "rowHeight": 0.9,
        "showValue": "auto",
        "tooltip": {
          "mode": "single",
          "sort": "none"
        }
      },
      "targets": [
        {
          "datasource": {
            "type": "influxdb",
            "uid": "DcjAISH4k"
          },
          "groupBy": [],
          "measurement": "version",
          "orderByTime": "ASC",
          "policy": "raw",
          "refId": "A",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "version"
                ],
                "type": "field"
              }
            ]
          ],
          "tags": []
        }
      ],
      "title": "Version",
      "type": "state-timeline"
    }
  ],
  "schemaVersion": 37,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": []
  },
  "time": {
    "from": "now-6h",
    "to": "now"
  },
  "timepicker": {},
  "timezone": "",
  "title": "Version",
  "uid": "JbmhfivVk",
  "version": 1,
  "weekStart": ""
}

I'm very new to Telegraf, Influx and Grafana so not sure if this is the best way to go about this. Welcome any suggestions or feedback.

[longzheng]

@jasonacox Followup from the other thread.

Not sure if you would consider adding this to the default Telegraf configuration and Grafana dashboards in the future.

[jasonacox]

Nice job in getting this to work @longzheng ! I like the idea and want to explore it, but have a few thoughts. How does the graph change when the version changes? I want to see how storing raw strings at this frequency (5s) will add to the DB growth. We are doing this with some weather data, but the frequency is very low (10m vs 5s).

FYI - if someone wanted to also plot the version as a value, the pyPowerwall has an API that could work: http://pypowerwall:8675/version

{"version": "22.26.2 8cd8cac4", "vint": 222602}

The vint could be used as they-axis value. Would that be helpful?

[longzheng]

Fair point about frequency. Maybe I should change the interval to something like 5m. Looking at Telegraf docs, I can just add this right?

      interval: '5m'

Good to know about /version. I personally prefer the full version string.