def merge_subsets()

in scripts/schema/subset_filter.py [0:0]

• 15 lines of code
• 15 McCabe index (conditional complexity)

def merge_subsets(a: Dict[str, Any], b: Dict[str, Any]) -> None:
    """Merges field subset definitions together. The b subset is merged into the a subset. Assumes that subsets have been stripped of non-ecs options."""
    for key in b:
        if key not in a:
            a[key] = b[key]
        elif 'fields' in a[key] and 'fields' in b[key]:
            if b[key]['fields'] == '*':
                a[key]['fields'] = '*'
            elif isinstance(a[key]['fields'], dict) and isinstance(b[key]['fields'], dict):
                merge_subsets(a[key]['fields'], b[key]['fields'])
        elif 'fields' in a[key] or 'fields' in b[key]:
            raise ValueError("Subsets unmergeable: 'fields' found in key '{}' in only one subset".format(key))
        # If both subsets have enabled set to False, this will leave enabled: False in the merged subset
        # Otherwise, enabled is removed and is implicitly true
        if a[key].get('enabled', True) or b[key].get('enabled', True):
            a[key].pop('enabled', None)
        # Same logic from 'enabled' applies to 'index'
        if a[key].get('index', True) or b[key].get('index', True):
            a[key].pop('index', None)