Crate sablier_cron

source ·
Expand description

A cron expression parser and schedule explorer

§Example

use sablier_cron::Schedule;
use chrono::{DateTime, NaiveDateTime, Utc};
use std::str::FromStr;

 //               sec  min   hour   day of month   month   day of week   year
 let expression = "0   30   9,12,15     1,15       May-Aug  Mon,Wed,Fri  2018/2";
 let schedule = Schedule::from_str(expression).unwrap();
 let ts = 1234567890;
 let next_ts = match schedule
   .after(&DateTime::<Utc>::from_utc(
       NaiveDateTime::from_timestamp(ts, 0),
       Utc,
   ))
   .take(1)
   .next()
   {
       Some(datetime) => Some(datetime.timestamp()),
       None => None,
   };

/*
Upcoming fire times:
-> 2018-06-01 09:30:00 UTC
-> 2018-06-01 12:30:00 UTC
-> 2018-06-01 15:30:00 UTC
-> 2018-06-15 09:30:00 UTC
-> 2018-06-15 12:30:00 UTC
-> 2018-06-15 15:30:00 UTC
-> 2018-08-01 09:30:00 UTC
-> 2018-08-01 12:30:00 UTC
-> 2018-08-01 15:30:00 UTC
-> 2018-08-15 09:30:00 UTC
*/

Modules§

Structs§

Traits§

  • TimeUnitSpec
    Methods exposing a schedule’s configured ordinals for each individual unit of time.