Reputation: 4565
I have a problem here. How do i run job at certain date time in the future using Agenda like node-scheduler do. Based on https://www.npmjs.com/package/node-schedule, node-schedule have cron-style scheduling method. So it is easier for me to extract date from my input. I have read Agenda documentation https://github.com/rschmukler/agenda#agenda-events, it says Agenda uses Human Interval for specifying the intervals.
How can i do this?
Upvotes: 2
Views: 5771
Reputation: 221
interval can be a human-readable format String, a cron format String, or a Number.
meaning it supports cron-style scheduling method.
you could schedule a job to run 3 minutes from the current time
await agenda.schedule('3 minutes', 'send confirmation to new user', {email:"[email protected]"} );
// Alternatively, you could also do:
await agenda.schedule('*/3 * * * *', 'send confirmation to new user', {email:"[email protected]"});
run a job Monday at 09:00
await agenda.schedule('0 9 * * 1', 'MondayJob', {msg:"guess what today is 'Monday'"});
run on Saturday at 23:45 (11:45 PM)
await agenda.schedule('45 23 * * 6', 'jobName', {});
Upvotes: 1
Reputation: 12022
If you have a future date, you can convert this to number of days
from today or even number of seconds
as below and then use the same with agenda
cron job
function findDaysDifference ( date1, date2 ) {
//Get 1 day in milliseconds
var oneDay_ms = 1000 * 60 * 60 * 24;
// Convert both dates to milliseconds
var date1_ms = date1.getTime();
var date2_ms = date2.getTime();
// Calculate the difference in milliseconds
var difference_ms = date2_ms - date1_ms;
// Convert back to days and return
return Math.round(difference_ms/oneDay_ms);
}
var futureDate = new Date(2018, 0, 1);
var daysFromNow = findDaysDifference(new Date(), futureDate);
console.log(daysFromNow);
Then create agenda
job and schedule it with daysFromNow
calculated above,
agenda.define('sayHello', function(job) {
console.log("Hello!");
});
// Schedule a job to run once at a given time
agenda.schedule(daysFromNow + ' days', 'sayHello');
If you want to schedule it at particular time in the future, you can calculate the seconds as below,
function findSecondsDifference ( date1, date2 ) {
var oneSecond_ms = 1000;
// Convert both dates to milliseconds
var date1_ms = date1.getTime();
var date2_ms = date2.getTime();
// Calculate the difference in milliseconds
var difference_ms = date2_ms - date1_ms;
// Convert back to days and return
return Math.round(difference_ms/oneSecond_ms);
}
var futureDate = new Date(2018, 0, 1, 16);
var secsFromNow = findSecondsDifference(new Date(), futureDate);
console.log(secsFromNow);
Then create agenda
job and schedule it with secsFromNow
calculated above,
agenda.define('sayHello', function(job) {
console.log("Hello!");
});
// Schedule a job to run once at a given time
agenda.schedule(secsFromNow + ' seconds', 'sayHello');
Upvotes: 2