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MDL-39312 cache: interfaces for managing lock instances.

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Bug: There was no way to create an instance of a lock plugin for use
within Moodle.
Solution: Implemented management interfaces as part of cache/admin.php
to allow for instances to be added and deleted.
This was done in along the same lines of adding store instances.
This commit is contained in:
Sam Hemelryk
2013-04-30 16:26:34 +12:00
parent cf5a3296c4
commit acf49f4b9a
9 changed files with 323 additions and 10 deletions
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cache/admin.php
Vendored
+50
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@@ -84,6 +84,7 @@ if (!empty($action) && confirm_sesskey()) {
} else if ($data = $mform->get_data()) {
$config = cache_administration_helper::get_store_configuration_from_data($data);
$writer = cache_config_writer::instance();
unset($config['lock']);
foreach ($writer->get_locks() as $lock => $lockconfig) {
if ($lock == $data->lock) {
@@ -180,6 +181,55 @@ if (!empty($action) && confirm_sesskey()) {
cache_helper::purge_store($store);
redirect($PAGE->url, get_string('purgestoresuccess', 'cache'), 5);
break;
case 'newlockinstance':
// Adds a new lock instance.
$lock = required_param('lock', PARAM_ALPHANUMEXT);
$mform = cache_administration_helper::get_add_lock_form($lock);
if ($mform->is_cancelled()) {
redirect($PAGE->url);
} else if ($data = $mform->get_data()) {
$factory = cache_factory::instance();
$config = $factory->create_config_instance(true);
$name = $data->name;
$data = cache_administration_helper::get_lock_configuration_from_data($lock, $data);
$config->add_lock_instance($name, $lock, $data);
redirect($PAGE->url, get_string('addlocksuccess', 'cache', $name), 5);
}
break;
case 'deletelock':
// Deletes a lock instance.
$lock = required_param('lock', PARAM_ALPHANUMEXT);
$confirm = optional_param('confirm', false, PARAM_BOOL);
if (!array_key_exists($lock, $locks)) {
$notifysuccess = false;
$notification = get_string('invalidlock');
} else if ($locks[$lock]['uses'] > 0) {
$notifysuccess = false;
$notification = get_string('deletelockhasuses', 'cache');
}
if ($notifysuccess) {
if (!$confirm) {
$title = get_string('confirmlockdeletion', 'cache');
$params = array('lock' => $lock, 'confirm' => 1, 'action' => $action, 'sesskey' => sesskey());
$url = new moodle_url($PAGE->url, $params);
$button = new single_button($url, get_string('deletelock', 'cache'));
$PAGE->set_title($title);
$PAGE->set_heading($SITE->fullname);
echo $OUTPUT->header();
echo $OUTPUT->heading($title);
$confirmation = get_string('deletelockconfirmation', 'cache', $lock);
echo $OUTPUT->confirm($confirmation, $button, $PAGE->url);
echo $OUTPUT->footer();
exit;
} else {
$writer = cache_config_writer::instance();
$writer->delete_lock_instance($lock);
redirect($PAGE->url, get_string('deletelocksuccess', 'cache'), 5);
}
}
break;
}
}