{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "contract/ingest/telemetry.schema.json",
  "allOf": [
    { "$ref": "contract/ingest/common.schema.json" },
    {
      "type": "object",
      "properties": {
        "payload": {
          "type": "object",
          "required": ["measurements"],
          "additionalProperties": false,
          "properties": {
            "measurements": {
              "type": "array",
              "minItems": 1,
              "items": {
                "type": "object",
                "required": ["metric", "value"],
                "additionalProperties": false,
                "properties": {
                  "metric": {
                    "type": "string",
                    "minLength": 1
                  },
                  "value": {
                    "type": ["number", "string", "boolean"]
                  },
                  "unit": {
                    "type": "string"
                  },
                  "source": {
                    "type": "string"
                  },
                  "ts": {
                    "type": "integer"
                  }
                }
              }
            }
          }
        }
      }
    }
  ]
}