def multitarget_fix()

in curator/helpers/utils.py [0:0]

• 18 lines of code
• 10 McCabe index (conditional complexity)

def multitarget_fix(pattern: str) -> str:
    """
    If pattern only has '-' prefixed entries (excludes)
    prepend a wildcard to pattern

    :param pattern: The Elasticsearch multi-target syntax pattern
    :type pattern: str

    :returns: The pattern, possibly with a wildcard prepended
    :rtype: str
    """
    # Split pattern into elements
    elements = pattern.split(',')
    if len(elements) == 1 and elements[0] == '':
        return '*'
    # Initialize positive and negative lists
    positives = []
    negatives = []
    # Loop through elements and sort them into positive and negative lists
    for element in elements:
        if element.startswith('-'):
            negatives.append(element)
        else:
            positives.append(element)
    # If there are no positive elements, but there are negative elements,
    # add a wildcard to the beginning of the pattern
    if len(positives) == 0 and len(negatives) > 0:
        logger.debug(
            "Only negative elements in pattern. Adding '*' so there's something "
            " to remove"
        )
        return '*,' + pattern
    # Otherwise, return the original pattern
    return pattern