[SOLVED] Set cron schedule from properties file rather than hard coding it and still avoid Attribute value must be constant

Set cron schedule from properties file rather than hard coding it and still avoid Attribute value must be constant

I'm using SchedulerLock to create a schedule in my Spring Boot application. Currently the schedule is hard coded to run every 3 hours:

private final String everyThreeHours = "0 0 */3 * * *";

@Scheduled(cron = everyThreeHours)
public void runCleanupSchedule() throws IOException {
    ...
}

I'd like to make everyThreeHours dynamic so I can have different schedules in the properties file for each environment. Unfortunately when I put this in the properties file I get Attribute value must be constant. Is there any way I can set this in my properties rather than having it hard coded?

Solution

this should work

@Scheduled(cron = "${scheduled.everyThreeHours}")
public void runCleanupSchedule() throws IOException {
    ...
}

in your application.properties add scheduled.everyThreeHours

scheduled.everyThreeHours=0 0 */3 * * *

and you can change the value for each environment properties file