task_log_cleanup_task.php is hardcoded to use the database_logger cleanup method

On a fresh install:

1. Install the attached sillylogger local plugin
2. Add to config.php:

   $CFG->task_log_class = '\\local_sillylogger\\silly_logger';

3. Navigate to "Site administration" > "Server" > "Tasks" and set the following:
   1. task_logretention: 1 second
   2. task_logretainruns: 1
4. Run cron:

   php admin/cli/cron.php

   • Verify you see "Hello from the silly logger" in the output
5. Run the cleanup task:

   php admin/tool/task/cli/schedule_task.php --execute="\\core\\task\\task_log_cleanup_task"

   • Verify you see "This is the silly logger cleaning up after itself"