Crate job_scheduler

JobScheduler

A simple cron-like job scheduling library for Rust.

Usage

Be sure to add the job_scheduler crate to your Cargo.toml:

[dependencies]
job_scheduler = "*"

Creating a schedule for a job is done using the FromStr impl for the Schedule type of the cron library.

The scheduling format is as follows:

sec   min   hour   day of month   month   day of week   year
*     *     *      *              *       *             *

Note that the year may be omitted.

Comma separated values such as 5,8,10 represent more than one time value. So for example, a schedule of 0 2,14,26 * * * * would execute on the 2nd, 14th, and 26th minute of every hour.

Ranges can be specified with a dash. A schedule of 0 0 * 5-10 * * would execute once per hour but only on day 5 through 10 of the month.

Day of the week can be specified as an abbreviation or the full name. A schedule of 0 0 6 * * Sun,Sat would execute at 6am on Sunday and Saturday.

A simple usage example:

extern crate job_scheduler;
use job_scheduler::{JobScheduler, Job};
use std::time::Duration;

fn main() {
    let mut sched = JobScheduler::new();

    sched.add(Job::new("1/10 * * * * *".parse().unwrap(), || {
        println!("I get executed every 10 seconds!");
    }));

    loop {
        sched.tick();

        std::thread::sleep(Duration::from_millis(500));
    }
}

Structs

Job	A schedulable Job.
JobScheduler	The JobScheduler contains and executes the scheduled jobs.
Schedule
Uuid	A Universally Unique Identifier (UUID).