@Override
    public Object parse(SourceData sourceData, int rowIndex, Context context) {
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm:ss");
        if (stringParser != null) {
            String zoneString = OperatorTools.parseString(stringParser.parse(sourceData, rowIndex, context));
            return LocalTime.now(ZoneId.of(zoneString)).withNano(0).format(formatter);
        } else {
            return LocalTime.now(ZoneId.systemDefault()).withNano(0).format(formatter);
        }
    }
LocalTimeFunction  ->  localTime([timeZoneStr])
description:
- Return the current time in the specified time zone.
Note: timeZoneStr is the system time zone
inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/temporal/LocalTimeFunction.java