functionInvokeError function

KoolbaseException functionInvokeError(int statusCode, String message)

Builds the right exception for a failed invocation.

A single type carrying a status number made every failure look alike: a missing Function, a caller without permission, and a Function that threw all arrived identically, and an application had to read the number to tell them apart. The distinction matters — one is a deployment problem, one is a permissions problem, and one is a bug in the Function.

Implementation

KoolbaseException functionInvokeError(int statusCode, String message) {
  switch (statusCode) {
    case 401:
      // Not a Function failure. A rejected credential stops the whole SDK
      // working, so it raises the shared type.
      return KoolbaseUnauthenticatedException(message);
    case 403:
      return FunctionPermissionException(message);
    case 404:
      return FunctionNotFoundException(message);
    case 400:
      return FunctionValidationException(message);
    case 402:
      return FunctionQuotaExceededException(message);
  }
  if (statusCode >= 500) {
    return FunctionExecutionException(message, statusCode: statusCode);
  }
  return FunctionInvokeException(message, statusCode: statusCode);
}