Scheduled events disappear from events queue

Question

Scheduled events disappear from events queue

kel

2021年12月22日 17:07

I'm having an issue where events that I have scheduled work for a while then just stop. After looking at the event queue I see that the scheduled events are no longer in the queue.

If I deactivate then reactivate the plugin the schedule is back and works for a period of time.

I don't know if WordPress has something that removes events if they timeout or anything like that.

Here is my code:

register_activation_hook(__FILE__, 'k2_section_featured_ads_setup');
function k2_section_featured_ads_setup() {
    wp_schedule_event('1395871200', 'minutely', 'k2_section_featured_ads_hook');
}

register_deactivation_hook(__FILE__, 'k2_section_featured_ads_deactivation');
function k2_section_featured_ads_deactivation() {

    $featured_next = wp_next_scheduled('k2_section_featured_ads_hook');
    wp_unschedule_event($featured_next, 'k2_section_featured_ads_hook');
}

add_action('k2_section_featured_ads_hook', 'k2_section_featured_ads_check_time');

function k2_section_featured_ads_check_time() {
    // function here
}

Here is the filter for my extra cron schedules

function k2_cron_add_schedules( $schedules ) {
    $schedules['quarterday'] = array(
        'interval' = 14400,
        'display' = __('Once every 4 hours')
    );
    $schedules['minutely'] = array(
        'interval' = 60,
        'display' = __('Once every 1 minute')
    );
    return $schedules;
}
add_filter('cron_schedules', 'k2_cron_add_schedules');

Topic events plugin-development Wordpress

Category Web

T.Todua · Accepted Answer · 2021年4月9日 16:51

1

T.Todua answered at 2021年4月9日 16:51

This topic on WP.ORG would help.

Long story short - if there is issue or delay or break in the cron-job, it might get delisted by wp.

Jamie Hamick · Accepted Answer · 2016年3月18日 17:27

My solution for now is check every hour if it is running and if not reschedule it. I also remove this in deactivate etc.

wp_schedule_event(time(), 'hourly', 'my_restart_schedule_if_failed');

function my_restart_schedule_if_failed() {
    if( !wp_next_scheduled( 'my_scheduled_minute_job' ) ) {
        wp_schedule_event( time(), 'one_minute', 'my_scheduled_minute_job' );
    }
}

kel · Accepted Answer · 2015年6月22日 16:10

After pouring all of my points into this question and trying a few suggested options it seems that WordPress can't handle one minute crons. I have changed it to 5 minutes and haven't had any issues since.

A few things that I tried over the course of weeks for testing purposes:

Change the hook names to not include underscores [BUSTED]
Rewrite the plugin. Was written procedurally originally and now its all OOP [BUSTED]
Changed to 5 minute schedule [BUSTED]

EDIT: I originally marked the last as working but after all these months it was unscheduled again. I'm still not sure what's going on with all of this.

Scheduled events disappear from events queue

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