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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* The administration and management interface for the cache setup and configuration.
*
* This file is part of Moodle's cache API, affectionately called MUC.
*
* @package core
* @category cache
* @copyright 2012 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once('../config.php');
require_once($CFG->dirroot.'/lib/adminlib.php');
require_once($CFG->dirroot.'/cache/locallib.php');
require_once($CFG->dirroot.'/cache/forms.php');
// The first time the user visits this page we are going to reparse the definitions.
// Just ensures that everything is up to date.
// We flag is session so that this only happens once as people are likely to hit
// this page several times if making changes.
if (empty($SESSION->cacheadminreparsedefinitions)) {
cache_helper::update_definitions();
$SESSION->cacheadminreparsedefinitions = true;
}
$action = optional_param('action', null, PARAM_ALPHA);
admin_externalpage_setup('cacheconfig');
$context = context_system::instance();
$storeinstancesummaries = cache_administration_helper::get_store_instance_summaries();
$storepluginsummaries = cache_administration_helper::get_store_plugin_summaries();
$definitionsummaries = cache_administration_helper::get_definition_summaries();
$defaultmodestores = cache_administration_helper::get_default_mode_stores();
$locks = cache_administration_helper::get_lock_summaries();
$title = new lang_string('cacheadmin', 'cache');
$mform = null;
$notifications = array();
$notifysuccess = true;
if (!empty($action) && confirm_sesskey()) {
switch ($action) {
case 'rescandefinitions' : // Rescan definitions.
cache_config_writer::update_definitions();
redirect($PAGE->url);
break;
case 'addstore' : // Add the requested store.
$plugin = required_param('plugin', PARAM_PLUGIN);
if (!$storepluginsummaries[$plugin]['canaddinstance']) {
print_error('ex_unmetstorerequirements', 'cache');
}
$mform = cache_administration_helper::get_add_store_form($plugin);
$title = get_string('addstore', 'cache', $storepluginsummaries[$plugin]['name']);
if ($mform->is_cancelled()) {
redirect($PAGE->url);
} 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) {
$config['lock'] = $data->lock;
}
}
$writer->add_store_instance($data->name, $data->plugin, $config);
redirect($PAGE->url, get_string('addstoresuccess', 'cache', $storepluginsummaries[$plugin]['name']), 5);
}
break;
case 'editstore' : // Edit the requested store.
$plugin = required_param('plugin', PARAM_PLUGIN);
$store = required_param('store', PARAM_TEXT);
$mform = cache_administration_helper::get_edit_store_form($plugin, $store);
$title = get_string('addstore', 'cache', $storepluginsummaries[$plugin]['name']);
if ($mform->is_cancelled()) {
redirect($PAGE->url);
} 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) {
$config['lock'] = $data->lock;
}
}
$writer->edit_store_instance($data->name, $data->plugin, $config);
redirect($PAGE->url, get_string('editstoresuccess', 'cache', $storepluginsummaries[$plugin]['name']), 5);
}
break;
case 'deletestore' : // Delete a given store.
$store = required_param('store', PARAM_TEXT);
$confirm = optional_param('confirm', false, PARAM_BOOL);
if (!array_key_exists($store, $storeinstancesummaries)) {
$notifysuccess = false;
$notifications[] = array(get_string('invalidstore', 'cache'), false);
} else if ($storeinstancesummaries[$store]['mappings'] > 0) {
$notifysuccess = false;
$notifications[] = array(get_string('deletestorehasmappings', 'cache'), false);
}
if ($notifysuccess) {
if (!$confirm) {
$title = get_string('confirmstoredeletion', 'cache');
$params = array('store' => $store, 'confirm' => 1, 'action' => $action, 'sesskey' => sesskey());
$url = new moodle_url($PAGE->url, $params);
$button = new single_button($url, get_string('deletestore', 'cache'));
$PAGE->set_title($title);
$PAGE->set_heading($SITE->fullname);
echo $OUTPUT->header();
echo $OUTPUT->heading($title);
$confirmation = get_string('deletestoreconfirmation', 'cache', $storeinstancesummaries[$store]['name']);
echo $OUTPUT->confirm($confirmation, $button, $PAGE->url);
echo $OUTPUT->footer();
exit;
} else {
$writer = cache_config_writer::instance();
$writer->delete_store_instance($store);
redirect($PAGE->url, get_string('deletestoresuccess', 'cache'), 5);
}
}
break;
case 'editdefinitionmapping' : // Edit definition mappings.
$definition = required_param('definition', PARAM_SAFEPATH);
if (!array_key_exists($definition, $definitionsummaries)) {
throw new cache_exception('Invalid cache definition requested');
}
$title = get_string('editdefinitionmappings', 'cache', $definition);
$mform = new cache_definition_mappings_form($PAGE->url, array('definition' => $definition));
if ($mform->is_cancelled()) {
redirect($PAGE->url);
} else if ($data = $mform->get_data()) {
$writer = cache_config_writer::instance();
$mappings = array();
foreach ($data->mappings as $mapping) {
if (!empty($mapping)) {
$mappings[] = $mapping;
}
}
$writer->set_definition_mappings($definition, $mappings);
redirect($PAGE->url);
}
break;
case 'editdefinitionsharing' :
$definition = required_param('definition', PARAM_SAFEPATH);
if (!array_key_exists($definition, $definitionsummaries)) {
throw new cache_exception('Invalid cache definition requested');
}
$title = get_string('editdefinitionsharing', 'cache', $definition);
$sharingoptions = $definitionsummaries[$definition]['sharingoptions'];
$customdata = array('definition' => $definition, 'sharingoptions' => $sharingoptions);
$mform = new cache_definition_sharing_form($PAGE->url, $customdata);
$mform->set_data(array(
'sharing' => $definitionsummaries[$definition]['selectedsharingoption'],
'userinputsharingkey' => $definitionsummaries[$definition]['userinputsharingkey']
));
if ($mform->is_cancelled()) {
redirect($PAGE->url);
} else if ($data = $mform->get_data()) {
$component = $definitionsummaries[$definition]['component'];
$area = $definitionsummaries[$definition]['area'];
// Purge the stores removing stale data before we alter the sharing option.
cache_helper::purge_stores_used_by_definition($component, $area);
$writer = cache_config_writer::instance();
$sharing = array_sum(array_keys($data->sharing));
$userinputsharingkey = $data->userinputsharingkey;
$writer->set_definition_sharing($definition, $sharing, $userinputsharingkey);
redirect($PAGE->url);
}
break;
case 'editmodemappings': // Edit default mode mappings.
$mform = new cache_mode_mappings_form(null, $storeinstancesummaries);
$mform->set_data(array(
'mode_'.cache_store::MODE_APPLICATION => key($defaultmodestores[cache_store::MODE_APPLICATION]),
'mode_'.cache_store::MODE_SESSION => key($defaultmodestores[cache_store::MODE_SESSION]),
'mode_'.cache_store::MODE_REQUEST => key($defaultmodestores[cache_store::MODE_REQUEST]),
));
if ($mform->is_cancelled()) {
redirect($PAGE->url);
} else if ($data = $mform->get_data()) {
$mappings = array(
cache_store::MODE_APPLICATION => array($data->{'mode_'.cache_store::MODE_APPLICATION}),
cache_store::MODE_SESSION => array($data->{'mode_'.cache_store::MODE_SESSION}),
cache_store::MODE_REQUEST => array($data->{'mode_'.cache_store::MODE_REQUEST}),
);
$writer = cache_config_writer::instance();
$writer->set_mode_mappings($mappings);
redirect($PAGE->url);
}
break;
case 'purgedefinition': // Purge a specific definition.
$id = required_param('definition', PARAM_SAFEPATH);
list($component, $area) = explode('/', $id, 2);
$factory = cache_factory::instance();
$definition = $factory->create_definition($component, $area);
if ($definition->has_required_identifiers()) {
// We will have to purge the stores used by this definition.
cache_helper::purge_stores_used_by_definition($component, $area);
} else {
// Alrighty we can purge just the data belonging to this definition.
cache_helper::purge_by_definition($component, $area);
}
$message = get_string('purgexdefinitionsuccess', 'cache', [
'name' => $definition->get_name(),
'component' => $component,
'area' => $area,
]);
$purgeagainlink = html_writer::link(new moodle_url('/cache/admin.php', [
'action' => 'purgedefinition', 'sesskey' => sesskey(), 'definition' => $id]),
get_string('purgeagain', 'cache'));
redirect($PAGE->url, $message . ' ' . $purgeagainlink, 5);
break;
case 'purgestore':
case 'purge': // Purge a store cache.
$store = required_param('store', PARAM_TEXT);
cache_helper::purge_store($store);
$message = get_string('purgexstoresuccess', 'cache', ['store' => $store]);
$purgeagainlink = html_writer::link(new moodle_url('/cache/admin.php', [
'action' => 'purgestore', 'sesskey' => sesskey(), 'store' => $store]),
get_string('purgeagain', 'cache'));
redirect($PAGE->url, $message . ' ' . $purgeagainlink, 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;
$notifications[] = array(get_string('invalidlock', 'cache'), false);
} else if ($locks[$lock]['uses'] > 0) {
$notifysuccess = false;
$notifications[] = array(get_string('deletelockhasuses', 'cache'), false);
}
if ($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($PAGE->url, get_string('deletelocksuccess', 'cache'), 5);
}
}
break;
}
}
// Add cache store warnings to the list of notifications.
// Obviously as these are warnings they are show as failures.
foreach (cache_helper::warnings($storeinstancesummaries) as $warning) {
$notifications[] = array($warning, false);
}
$PAGE->set_title($title);
$PAGE->set_heading($SITE->fullname);
/* @var core_cache_renderer $renderer */
$renderer = $PAGE->get_renderer('core_cache');
echo $renderer->header();
echo $renderer->heading($title);
echo $renderer->notifications($notifications);
if ($mform instanceof moodleform) {
$mform->display();
} else {
echo $renderer->store_plugin_summaries($storepluginsummaries);
echo $renderer->store_instance_summariers($storeinstancesummaries, $storepluginsummaries);
echo $renderer->definition_summaries($definitionsummaries, $context);
echo $renderer->lock_summaries($locks);
$applicationstore = join(', ', $defaultmodestores[cache_store::MODE_APPLICATION]);
$sessionstore = join(', ', $defaultmodestores[cache_store::MODE_SESSION]);
$requeststore = join(', ', $defaultmodestores[cache_store::MODE_REQUEST]);
$editurl = new moodle_url('/cache/admin.php', array('action' => 'editmodemappings', 'sesskey' => sesskey()));
echo $renderer->mode_mappings($applicationstore, $sessionstore, $requeststore, $editurl);
}
echo $renderer->footer();