Crate miclockwork_cron

A cron expression parser and schedule explorer

Example

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

fn main() {
  //               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

• error

Structs

• Schedule

Traits

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