Sample JSON policy: it alerts me when my Macbook battery life is below 20%

batterylife-20pct.json

{
  "name": "projects/ric-cccwiki/alertPolicies/4142185058226000775",
  "displayName": "Macbook at home K40 needs charger",
  "documentation": {
    "content": "Your Macbook Battery at home is below 50%. Mattley, fa qualcosa!",
    "mimeType": "text/markdown"
  },
  "userLabels": {
    "env": "prod",
    "scope": "personal",
    "reason": "macbook-needs-charger"
  },
  "conditions": [
    {
      "name": "projects/ric-cccwiki/alertPolicies/4142185058226000775/conditions/6329688841835481336",
      "displayName": "Riccardo Macbook Battery - custom/BatteryLife",
      "conditionThreshold": {
        "aggregations": [
          {
            "alignmentPeriod": "300s",
            "perSeriesAligner": "ALIGN_MEAN"
          }
        ],
        "comparison": "COMPARISON_LT",
        "duration": "0s",
        "filter": "resource.type = \"gce_instance\" AND resource.labels.instance_id = \"ricc-macbookpro3\" AND metric.type = \"custom.googleapis.com/BatteryLife\"",
        "thresholdValue": 40,
        "trigger": {
          "count": 1
        }
      }
    }
  ],
  "alertStrategy": {
    "autoClose": "604800s"
  },
  "combiner": "OR",
  "enabled": true,
  "notificationChannels": [
    "projects/ric-cccwiki/notificationChannels/11244395096800566643",
    "projects/ric-cccwiki/notificationChannels/13099078121529356635",
    "projects/ric-cccwiki/notificationChannels/16791546489941562055"
  ],
  "creationRecord": {
    "mutateTime": "2022-11-10T04:55:42.517981702Z",
    "mutatedBy": "my-private-email@gmail.com"
  },
  "mutationRecord": {
    "mutateTime": "2022-11-12T17:31:36.396408365Z",
    "mutatedBy": "my-private-email@gmail.com"
  }
}