{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "contract/ingest/event.schema.json",
  "allOf": [
    { "$ref": "contract/ingest/common.schema.json" },
    {
      "type": "object",
      "properties": {
        "type": {
          "const": "event"
        },
        "payload": {
          "type": "object",
          "required": ["name"],
          "additionalProperties": false,
          "properties": {
            "name": {
              "type": "string",
              "minLength": 1,
              "description": "Event identifier, e.g. device.overheat"
            },
            "severity": {
              "type": "string",
              "enum": ["debug", "info", "warn", "error", "fatal"]
            },
            "message": {
              "type": "string"
            },
            "data": {
              "type": "object",
              "additionalProperties": true
            }
          }
        }
      }
    }
  ]
}