In the be8f453b74 the gradelib loading was removed by mistake. So
the library may not be loaded and executing the task may end with
the exception - class 'grade_grade' not found.
This patch adds asynchronous backup and restore functionality
to Moodle. This is an optional feature and is not enabled by
default. It can be enabled by site administrators.
Asynchronous backup and restores are actioned by the Moodle
adhoc task API. The progress of backup and restores is
displayedin the Moodle UI. Users can also be sent a message
when a backup or restore operation completes via the
Moodle messaging API.
This commit shifts the content of legacy completion_cron_criteria()
and completion_cron_completions() functions to completion_regular_task.
Also, those functions are deleted as part of this commit.
Shutdown handlers are processed in order. If something in a shutdown
handler uses a file which is stored in a per-request directory, and
another, unrelated, per-request directory was created before the handler
started. then a fresh per-request directory will be required.
There is an automatic data privacy request created to get rid of all the
personal data upon the user deletion. With the actual user record
absent, the data privacy requests page throws an error. Let's do here
same as we do in `delete_incomplete_users_task` and let us not delete
the actual user record.
Also deprecated the following functions -
1. message_move_userfrom_unread2read - It is not necessary
for us to mark a message as read on user deletion.
2. message_get_blocked_users - Horrible logic used to
determine if a user is blocked via reference on some
randomly chosen 'isblocked' variable.
3. message_get_contacts - The same as above. This can be
done in a much nicer way.
4. message_mark_message_read - We want two functions to do
this to avoid confusing messages and notifications.
5. message_can_delete_message - This assumed the variable
$message contained the 'useridto' property, which
was present in the old table structure. We do not want
future usages where a query is done on the new table
and is simply passed as this won't contain this property.
6. message_delete_message - Same as above.
Triggering a fatal error in an adhoc task is bad. It will be retried indefinitely.
Even though we are not sure how to get a module instance without a course module record,
it is possible and should not kill the Moodle site.
New function \core_search\manager::is_indexing_enabled(), analagous
to existing is_global_search_enabled().
This replaces existing duplicated code, ready for more use in
following commits.
