Analyze flow log records for application and generate metrics per period

def list_app_resources(
        app, env, resources, cmdb, start, end, tz):
    """Analyze flow log records for application and generate metrics per period"""
    logging.basicConfig(level=logging.INFO)
    start, end = get_dates(start, end, tz)

    all_resources = []
    for rtype_name in resources:
        rtype = Resource.get_type(rtype_name)
        resources = rtype.get_resources(cmdb, start, end, app, env)
        all_resources.extend(resources)
    print(json.dumps(all_resources, indent=2))