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Posted to commits@airflow.apache.org by GitBox <gi...@apache.org> on 2021/06/30 16:32:14 UTC

[GitHub] [airflow] uranusjr commented on issue #16731: Additional cron expression validation

uranusjr commented on issue #16731:
URL: https://github.com/apache/airflow/issues/16731#issuecomment-871556758


   I think we should build a simple validator to check for the whole string before passing it into croniter (and hopefully croniter will always work if the string passes our test).
   
   [The standard POSIX syntax](https://www.unix.com/man-page/posix/1p/crontab/) is fairly easy to parse, plus support to SUN-SAT. Is JAN-DEC a GNU extension? That can be added as well if it works in croniter.


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