def guids_from_list_str(s: str) -> Optional[Tuple[str, ...]]:
"""
Get tuple of guids from a python/json string representation of a list.
Extracts the guids from a string representation of a list, tuple,
or set of guids or a single guid.
Args:
s: input string
Returns:
Extracted guids as a tuple of strings.
If a provided string does not match the format, `None` will be returned.
For an empty list/tuple/set or empty string an empty tuple is returned.
Examples:
>>> guids_from_str(
"['07fd7195-c51e-44d6-a085-fa8274cf00d6', \
'070d7195-c51e-44d6-a085-fa8274cf00d6']")
will return
('07fd7195-c51e-44d6-a085-fa8274cf00d6',
'070d7195-c51e-44d6-a085-fa8274cf00d6')
"""
if s == "":
return tuple()
try:
validate_guid_format(s)
return (s,)
except ValueError:
pass
try:
parsed_expression = ast.parse(s, mode='eval')
except SyntaxError:
return None
if not hasattr(parsed_expression, 'body'):
return None
parsed = cast(ast.Expression, parsed_expression).body
if isinstance(parsed, ast.Str):
if len(parsed.s) > 0:
return (parsed.s,)
else:
return tuple()
if not isinstance(parsed, (ast.List, ast.Tuple, ast.Set)):
return None
if not all(isinstance(e, ast.Str) for e in parsed.elts):
return None
str_elts = cast(Tuple[ast.Str, ...], tuple(parsed.elts))
return tuple(s.s for s in str_elts)
def get_dataset_by_identifier(identifier: Union[int, str]):
"""
returns a dataset for a given identifier
identifier (str or int): run_id or guid
"""
if isinstance(identifier, int):
dataset = load_by_run_spec(captured_run_id=identifier)
elif isinstance(identifier, str):
validate_guid_format(identifier)
dataset = load_by_guid(identifier)
return dataset
def validate_node(node_guid: str, node: str) -> None:
"""
Validate that the guid given is a valid guid.
Args:
node_guid: the guid
node: either "head" or "tail"
"""
try:
validate_guid_format(node_guid)
except ValueError:
raise ValueError(
f'The guid given for {node} is not a valid guid. Received '
f'{node_guid}.')
def test_validation():
valid_guid = str(uuid4())
validate_guid_format(valid_guid)
with pytest.raises(ValueError):
validate_guid_format(valid_guid[1:])
