function update_cron

Implements hook_cron().

File

modules/update/update.module, line 297

Code

function update_cron() {
    $frequency = variable_get('update_check_frequency', 1);
    $interval = 60 * 60 * 24 * $frequency;
    if (REQUEST_TIME - variable_get('update_last_check', 0) > $interval) {
        // If the configured update interval has elapsed, we want to invalidate
        // the cached data for all projects, attempt to re-fetch, and trigger any
        // configured notifications about the new status.
        update_refresh();
        update_fetch_data();
    }
    else {
        // Otherwise, see if any individual projects are now stale or still
        // missing data, and if so, try to fetch the data.
        update_get_available(TRUE);
    }
    if (REQUEST_TIME - variable_get('update_last_email_notification', 0) > $interval) {
        // If configured time between notifications elapsed, send email about
        // updates possibly available.
        module_load_include('inc', 'update', 'update.fetch');
        _update_cron_notify();
    }
    // Clear garbage from disk.
    update_clear_update_disk_cache();
}