6 releases
0.2.0 | Jul 2, 2024 |
---|---|
0.1.4 | Nov 2, 2023 |
0.1.3 | Jul 2, 2024 |
0.1.2 | Jun 6, 2023 |
0.1.0 | Mar 14, 2023 |
#12 in #cron-scheduler
58 downloads per month
11KB
84 lines
cron-job
The cron-job
library lets you create cronjobs. This is basically
an implementation of the cron
library.
Getting started
Add this to your project:
[dependencies]
cron_job = "0.2.0"
Examples
You can schedule your own functions as jobs.
extern crate cron_job;
use cron_job::CronJob;
fn main() {
// Create CronJob
let mut cron = CronJob::default();
// Add the function
cron.new_job("* * * * * *", run_on_cron);
// Start job
cron.start();
}
// The function to be executed.
fn run_on_cron() {
println!("Executed function");
}
Multiple functions with different cron expression can also be added.
extern crate cron_job;
use cron_job::CronJob;
fn main() {
// Create CronJob
let mut cron = CronJob::default();
// Add the function to be run every second
cron.new_job("* * * * * *", run_every_second);
// Add the function to be run every 5 seconds
cron.new_job("*/5 * * * * *", run_every_five_seconds);
// Start jobs
cron.start();
}
// The function to be executed every second.
fn run_every_second() {
println!("1 second");
}
// The function to be executed every 5 seconds.
fn run_every_five_seconds() {
println!("5 seconds");
}
Running jobs implementing Job trait
Since the function used as job cannot have any parameters, the
Job
trait is available to be implemented to structs. This way
if any parameter needs to be passed to the function, can be
passed as the struct property.
extern crate cron_job;
use cron_job::CronJob;
fn main() {
// Create HelloJob
let helloJob = HelloJob{ name: "John" };
// Create CronJob
let mut cron = CronJob::default();
// Say hello every second
cron.new_job("* * * * * *", helloJob);
// Start jobs
cron.start();
}
// The job to be executed
struct HelloJob {
name: String
}
impl Job for HelloJob {
fn run(&self) {
println!("Hello, {}!", self.name);
}
}
Functions and job can also be mixed together.
extern crate cron_job;
use cron_job::CronJob;
fn main() {
// Create HelloJob
let helloJob = HelloJob{ name: "John" };
// Create CronJob
let mut cron = CronJob::default();
// Run function every second
cron.new_job("* * * * * *", run_every_second);
// Say hello every second
cron.new_job("* * * * * *", helloJob);
// Start jobs
cron.start();
}
// The function to be executed every second.
fn run_every_second() {
println!("1 second");
}
// The job to be executed
struct HelloJob {
name: String
}
// Very important, implement the Job trait and its functions.
impl Job for HelloJob {
fn run(&self) {
println!("Hello, {}!", self.name);
}
}
Dependencies
~2–7MB
~48K SLoC