in core/src/main/java/org/apache/rocketmq/streams/core/function/supplier/SourceSupplier.java [67:77]
public long getTimestamp(MessageExt originData, TimeType timeType) {
if (timeType == null) {
return System.currentTimeMillis();
} else if (timeType == TimeType.EVENT_TIME) {
return originData.getBornTimestamp();
} else if (timeType == TimeType.PROCESS_TIME) {
return System.currentTimeMillis();
} else {
throw new IllegalStateException("unknown time type: " + timeType.getClass().getName());
}
}