def filter_instances()

in lambda/snapshots_tool_utils.py [0:0]

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

def filter_instances(taggedinstance, pattern, instance_list):
# Takes the response from describe-db-instances and filters according to pattern in DBInstanceIdentifier
    filtered_list = []

    for instance in instance_list['DBInstances']:

        if taggedinstance == 'TRUE':
            client = boto3.client('rds', region_name=_REGION)
            response = client.list_tags_for_resource(ResourceName=instance['DBInstanceArn'])

        if pattern == 'ALL_INSTANCES' and instance['Engine'] in _SUPPORTED_ENGINES:
            if (taggedinstance == 'TRUE' and search_tag_copydbsnapshot(response)) or taggedinstance == 'FALSE':
                filtered_list.append(instance)

        else:
            match = re.search(pattern, instance['DBInstanceIdentifier'])

            if match and instance['Engine'] in _SUPPORTED_ENGINES:
                if (taggedinstance == 'TRUE' and search_tag_copydbsnapshot(response)) or taggedinstance == 'FALSE':
                    filtered_list.append(instance)

    return filtered_list