{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "dd-flow/timeline-event@1",
  "title": "Safe RUN timeline event",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema_id", "timestamp", "event", "run_id", "payload"],
  "properties": {
    "schema_id": {"const": "dd-flow/timeline-event@1"},
    "timestamp": {"type": "string", "format": "date-time"},
    "event": {"type": "string", "minLength": 1},
    "run_id": {"type": "string", "minLength": 1},
    "stage": {"type": ["string", "null"]},
    "attempt_number": {"type": ["integer", "null"], "minimum": 1},
    "session_id": {"type": ["string", "null"]},
    "job_id": {"type": ["string", "null"]},
    "status": {"type": ["string", "null"]},
    "payload": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "reason": {"type": "string"},
        "source": {"type": "string"},
        "count": {"type": "integer", "minimum": 0},
        "redaction": {"const": "safe-structured-only"}
      }
    }
  }
}