[MODEL: dataset=msft_wsus_raw]
alter
    columns = regextract(_raw_log,"\s(\S+)")
| alter
 //   time_zone = arrayindex(columns,1),
    severity = arrayindex(columns,2),
    service_name = arrayindex(split(arrayindex(columns,3),"."),0),
    event_category = arrayindex(regextract(_raw_log,"\s([a-zA-Z]+)\.[a-zA-Z]+"),0),
    action = arrayindex(regextract(_raw_log,"\s[a-zA-Z]+\.([a-zA-Z]+)"),0),
    event_time = arrayindex(regextract(_raw_log,"\d{4}\-\d{2}\-\d{2}\s\d{2}:\d{2}:\d{2}\.\d{3}"),0),
    EventId = arrayindex(regextract(_raw_log,"\s*EventId\=\s*([^\,]+)\,"),0),
    Message = arraystring(regextract(_raw_log,"[a-zA-Z]+\.[a-zA-Z]+\s*(.*)"), " ")
| alter
//    _time = parse_timestamp("%Y-%m-%d %H:%M:%E3S",event_time),
    xdm.alert.severity = severity,
    xdm.event.id = EventId,
    xdm.event.type = event_category,
    xdm.event.outcome_reason = action,
    xdm.target.process.name = service_name,
    xdm.event.description = Message;