errors.py 文件源码

def check_status(status, expected, path, headers=None,
                 resp_headers=None, body=None, extras=None):
  """Check HTTP response status is expected.

  Args:
    status: HTTP response status. int.
    expected: a list of expected statuses. A list of ints.
    path: filename or a path prefix.
    headers: HTTP request headers.
    resp_headers: HTTP response headers.
    body: HTTP response body.
    extras: extra info to be logged verbatim if error occurs.

  Raises:
    AuthorizationError: if authorization failed.
    NotFoundError: if an object that's expected to exist doesn't.
    TimeoutError: if HTTP request timed out.
    ServerError: if server experienced some errors.
    FatalError: if any other unexpected errors occurred.
  """
  if status in expected:
    return

  msg = ('Expect status %r from Google Storage. But got status %d.\n'
         'Path: %r.\n'
         'Request headers: %r.\n'
         'Response headers: %r.\n'
         'Body: %r.\n'
         'Extra info: %r.\n' %
         (expected, status, path, headers, resp_headers, body, extras))

  if status == httplib.UNAUTHORIZED:
    raise AuthorizationError(msg)
  elif status == httplib.FORBIDDEN:
    raise ForbiddenError(msg)
  elif status == httplib.NOT_FOUND:
    raise NotFoundError(msg)
  elif status == httplib.REQUEST_TIMEOUT:
    raise TimeoutError(msg)
  elif status == httplib.REQUESTED_RANGE_NOT_SATISFIABLE:
    raise InvalidRange(msg)
  elif (status == httplib.OK and 308 in expected and
        httplib.OK not in expected):
    raise FileClosedError(msg)
  elif status >= 500:
    raise ServerError(msg)
  else:
    raise FatalError(msg)