UpgradeHistory (type)

{
  "additionalProperties": false, 
  "id": "UpgradeHistory", 
  "module_id": "UpgradeTypes", 
  "properties": {
    "initial_version": {
      "description": "Version before the upgrade started", 
      "required": true, 
      "title": "Initial Version", 
      "type": "string"
    }, 
    "target_version": {
      "description": "Version being upgraded to", 
      "required": true, 
      "title": "Target Version", 
      "type": "string"
    }, 
    "timestamp": {
      "$ref": "EpochMsTimestamp, 
      "required": true, 
      "title": "Timestamp (in milliseconds since epoch) when the upgrade was performed"
    }, 
    "upgrade_status": {
      "enum": [
        "STARTED", 
        "SUCCESS", 
        "FAILED"
      ], 
      "required": true, 
      "title": "Status of the upgrade", 
      "type": "string"
    }
  }, 
  "type": "object"
}