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restore_stepslib.php
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restore_stepslib.php
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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/>.
/**
* Defines various restore steps that will be used by common tasks in restore
*
* @package core_backup
* @subpackage moodle2
* @category backup
* @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* delete old directories and conditionally create backup_temp_ids table
*/
class restore_create_and_clean_temp_stuff extends restore_execution_step {
protected function define_execution() {
$exists = restore_controller_dbops::create_restore_temp_tables($this->get_restoreid()); // temp tables conditionally
// If the table already exists, it's because restore_prechecks have been executed in the same
// request (without problems) and it already contains a bunch of preloaded information (users...)
// that we aren't going to execute again
if ($exists) { // Inform plan about preloaded information
$this->task->set_preloaded_information();
}
// Create the old-course-ctxid to new-course-ctxid mapping, we need that available since the beginning
$itemid = $this->task->get_old_contextid();
$newitemid = context_course::instance($this->get_courseid())->id;
restore_dbops::set_backup_ids_record($this->get_restoreid(), 'context', $itemid, $newitemid);
// Create the old-system-ctxid to new-system-ctxid mapping, we need that available since the beginning
$itemid = $this->task->get_old_system_contextid();
$newitemid = context_system::instance()->id;
restore_dbops::set_backup_ids_record($this->get_restoreid(), 'context', $itemid, $newitemid);
// Create the old-course-id to new-course-id mapping, we need that available since the beginning
$itemid = $this->task->get_old_courseid();
$newitemid = $this->get_courseid();
restore_dbops::set_backup_ids_record($this->get_restoreid(), 'course', $itemid, $newitemid);
}
}
/**
* delete the temp dir used by backup/restore (conditionally),
* delete old directories and drop temp ids table
*/
class restore_drop_and_clean_temp_stuff extends restore_execution_step {
protected function define_execution() {
global $CFG;
restore_controller_dbops::drop_restore_temp_tables($this->get_restoreid()); // Drop ids temp table
backup_helper::delete_old_backup_dirs(time() - (4 * 60 * 60)); // Delete > 4 hours temp dirs
if (empty($CFG->keeptempdirectoriesonbackup)) { // Conditionally
backup_helper::delete_backup_dir($this->task->get_tempdir()); // Empty restore dir
}
}
}
/**
* Restore calculated grade items, grade categories etc
*/
class restore_gradebook_structure_step extends restore_structure_step {
/**
* To conditionally decide if this step must be executed
* Note the "settings" conditions are evaluated in the
* corresponding task. Here we check for other conditions
* not being restore settings (files, site settings...)
*/
protected function execute_condition() {
global $CFG, $DB;
// No gradebook info found, don't execute
$fullpath = $this->task->get_taskbasepath();
$fullpath = rtrim($fullpath, '/') . '/' . $this->filename;
if (!file_exists($fullpath)) {
return false;
}
// Some module present in backup file isn't available to restore
// in this site, don't execute
if ($this->task->is_missing_modules()) {
return false;
}
// Some activity has been excluded to be restored, don't execute
if ($this->task->is_excluding_activities()) {
return false;
}
// There should only be one grade category (the 1 associated with the course itself)
// If other categories already exist we're restoring into an existing course.
// Restoring categories into a course with an existing category structure is unlikely to go well
$category = new stdclass();
$category->courseid = $this->get_courseid();
$catcount = $DB->count_records('grade_categories', (array)$category);
if ($catcount>1) {
return false;
}
// Arrived here, execute the step
return true;
}
protected function define_structure() {
$paths = array();
$userinfo = $this->task->get_setting_value('users');
$paths[] = new restore_path_element('gradebook', '/gradebook');
$paths[] = new restore_path_element('grade_category', '/gradebook/grade_categories/grade_category');
$paths[] = new restore_path_element('grade_item', '/gradebook/grade_items/grade_item');
if ($userinfo) {
$paths[] = new restore_path_element('grade_grade', '/gradebook/grade_items/grade_item/grade_grades/grade_grade');
}
$paths[] = new restore_path_element('grade_letter', '/gradebook/grade_letters/grade_letter');
$paths[] = new restore_path_element('grade_setting', '/gradebook/grade_settings/grade_setting');
return $paths;
}
protected function process_gradebook($data) {
}
protected function process_grade_item($data) {
global $DB;
$data = (object)$data;
$oldid = $data->id;
$data->course = $this->get_courseid();
$data->courseid = $this->get_courseid();
if ($data->itemtype=='manual') {
// manual grade items store category id in categoryid
$data->categoryid = $this->get_mappingid('grade_category', $data->categoryid, NULL);
// if mapping failed put in course's grade category
if (NULL == $data->categoryid) {
$coursecat = grade_category::fetch_course_category($this->get_courseid());
$data->categoryid = $coursecat->id;
}
} else if ($data->itemtype=='course') {
// course grade item stores their category id in iteminstance
$coursecat = grade_category::fetch_course_category($this->get_courseid());
$data->iteminstance = $coursecat->id;
} else if ($data->itemtype=='category') {
// category grade items store their category id in iteminstance
$data->iteminstance = $this->get_mappingid('grade_category', $data->iteminstance, NULL);
} else {
throw new restore_step_exception('unexpected_grade_item_type', $data->itemtype);
}
$data->scaleid = $this->get_mappingid('scale', $data->scaleid, NULL);
$data->outcomeid = $this->get_mappingid('outcome', $data->outcomeid, NULL);
$data->locktime = $this->apply_date_offset($data->locktime);
$data->timecreated = $this->apply_date_offset($data->timecreated);
$data->timemodified = $this->apply_date_offset($data->timemodified);
$coursecategory = $newitemid = null;
//course grade item should already exist so updating instead of inserting
if($data->itemtype=='course') {
//get the ID of the already created grade item
$gi = new stdclass();
$gi->courseid = $this->get_courseid();
$gi->itemtype = $data->itemtype;
//need to get the id of the grade_category that was automatically created for the course
$category = new stdclass();
$category->courseid = $this->get_courseid();
$category->parent = null;
//course category fullname starts out as ? but may be edited
//$category->fullname = '?';
$coursecategory = $DB->get_record('grade_categories', (array)$category);
$gi->iteminstance = $coursecategory->id;
$existinggradeitem = $DB->get_record('grade_items', (array)$gi);
if (!empty($existinggradeitem)) {
$data->id = $newitemid = $existinggradeitem->id;
$DB->update_record('grade_items', $data);
}
} else if ($data->itemtype == 'manual') {
// Manual items aren't assigned to a cm, so don't go duplicating them in the target if one exists.
$gi = array(
'itemtype' => $data->itemtype,
'courseid' => $data->courseid,
'itemname' => $data->itemname,
'categoryid' => $data->categoryid,
);
$newitemid = $DB->get_field('grade_items', 'id', $gi);
}
if (empty($newitemid)) {
//in case we found the course category but still need to insert the course grade item
if ($data->itemtype=='course' && !empty($coursecategory)) {
$data->iteminstance = $coursecategory->id;
}
$newitemid = $DB->insert_record('grade_items', $data);
}
$this->set_mapping('grade_item', $oldid, $newitemid);
}
protected function process_grade_grade($data) {
global $DB;
$data = (object)$data;
$olduserid = $data->userid;
$data->itemid = $this->get_new_parentid('grade_item');
$data->userid = $this->get_mappingid('user', $data->userid, null);
if (!empty($data->userid)) {
$data->usermodified = $this->get_mappingid('user', $data->usermodified, null);
$data->locktime = $this->apply_date_offset($data->locktime);
// TODO: Ask, all the rest of locktime/exported... work with time... to be rolled?
$data->overridden = $this->apply_date_offset($data->overridden);
$data->timecreated = $this->apply_date_offset($data->timecreated);
$data->timemodified = $this->apply_date_offset($data->timemodified);
$newitemid = $DB->insert_record('grade_grades', $data);
} else {
debugging("Mapped user id not found for user id '{$olduserid}', grade item id '{$data->itemid}'");
}
}
protected function process_grade_category($data) {
global $DB;
$data = (object)$data;
$oldid = $data->id;
$data->course = $this->get_courseid();
$data->courseid = $data->course;
$data->timecreated = $this->apply_date_offset($data->timecreated);
$data->timemodified = $this->apply_date_offset($data->timemodified);
$newitemid = null;
//no parent means a course level grade category. That may have been created when the course was created
if(empty($data->parent)) {
//parent was being saved as 0 when it should be null
$data->parent = null;
//get the already created course level grade category
$category = new stdclass();
$category->courseid = $this->get_courseid();
$category->parent = null;
$coursecategory = $DB->get_record('grade_categories', (array)$category);
if (!empty($coursecategory)) {
$data->id = $newitemid = $coursecategory->id;
$DB->update_record('grade_categories', $data);
}
}
//need to insert a course category
if (empty($newitemid)) {
$newitemid = $DB->insert_record('grade_categories', $data);
}
$this->set_mapping('grade_category', $oldid, $newitemid);
}
protected function process_grade_letter($data) {
global $DB;
$data = (object)$data;
$oldid = $data->id;
$data->contextid = context_course::instance($this->get_courseid())->id;
$gradeletter = (array)$data;
unset($gradeletter['id']);
if (!$DB->record_exists('grade_letters', $gradeletter)) {
$newitemid = $DB->insert_record('grade_letters', $data);
} else {
$newitemid = $data->id;
}
$this->set_mapping('grade_letter', $oldid, $newitemid);
}
protected function process_grade_setting($data) {
global $DB;
$data = (object)$data;
$oldid = $data->id;
$data->courseid = $this->get_courseid();
if (!$DB->record_exists('grade_settings', array('courseid' => $data->courseid, 'name' => $data->name))) {
$newitemid = $DB->insert_record('grade_settings', $data);
} else {
$newitemid = $data->id;
}
$this->set_mapping('grade_setting', $oldid, $newitemid);
}
/**
* put all activity grade items in the correct grade category and mark all for recalculation
*/
protected function after_execute() {
global $DB;
$conditions = array(
'backupid' => $this->get_restoreid(),
'itemname' => 'grade_item'//,
//'itemid' => $itemid
);
$rs = $DB->get_recordset('backup_ids_temp', $conditions);
// We need this for calculation magic later on.
$mappings = array();
if (!empty($rs)) {
foreach($rs as $grade_item_backup) {
// Store the oldid with the new id.
$mappings[$grade_item_backup->itemid] = $grade_item_backup->newitemid;
$updateobj = new stdclass();
$updateobj->id = $grade_item_backup->newitemid;
//if this is an activity grade item that needs to be put back in its correct category
if (!empty($grade_item_backup->parentitemid)) {
$oldcategoryid = $this->get_mappingid('grade_category', $grade_item_backup->parentitemid, null);
if (!is_null($oldcategoryid)) {
$updateobj->categoryid = $oldcategoryid;
$DB->update_record('grade_items', $updateobj);
}
} else {
//mark course and category items as needing to be recalculated
$updateobj->needsupdate=1;
$DB->update_record('grade_items', $updateobj);
}
}
}
$rs->close();
// We need to update the calculations for calculated grade items that may reference old
// grade item ids using ##gi\d+##.
// $mappings can be empty, use 0 if so (won't match ever)
list($sql, $params) = $DB->get_in_or_equal(array_values($mappings), SQL_PARAMS_NAMED, 'param', true, 0);
$sql = "SELECT gi.id, gi.calculation
FROM {grade_items} gi
WHERE gi.id {$sql} AND
calculation IS NOT NULL";
$rs = $DB->get_recordset_sql($sql, $params);
foreach ($rs as $gradeitem) {
// Collect all of the used grade item id references
if (preg_match_all('/##gi(\d+)##/', $gradeitem->calculation, $matches) < 1) {
// This calculation doesn't reference any other grade items... EASY!
continue;
}
// For this next bit we are going to do the replacement of id's in two steps:
// 1. We will replace all old id references with a special mapping reference.
// 2. We will replace all mapping references with id's
// Why do we do this?
// Because there potentially there will be an overlap of ids within the query and we
// we substitute the wrong id.. safest way around this is the two step system
$calculationmap = array();
$mapcount = 0;
foreach ($matches[1] as $match) {
// Check that the old id is known to us, if not it was broken to begin with and will
// continue to be broken.
if (!array_key_exists($match, $mappings)) {
continue;
}
// Our special mapping key
$mapping = '##MAPPING'.$mapcount.'##';
// The old id that exists within the calculation now
$oldid = '##gi'.$match.'##';
// The new id that we want to replace the old one with.
$newid = '##gi'.$mappings[$match].'##';
// Replace in the special mapping key
$gradeitem->calculation = str_replace($oldid, $mapping, $gradeitem->calculation);
// And record the mapping
$calculationmap[$mapping] = $newid;
$mapcount++;
}
// Iterate all special mappings for this calculation and replace in the new id's
foreach ($calculationmap as $mapping => $newid) {
$gradeitem->calculation = str_replace($mapping, $newid, $gradeitem->calculation);
}
// Update the calculation now that its being remapped
$DB->update_record('grade_items', $gradeitem);
}
$rs->close();
// Need to correct the grade category path and parent
$conditions = array(
'courseid' => $this->get_courseid()
);
$rs = $DB->get_recordset('grade_categories', $conditions);
// Get all the parents correct first as grade_category::build_path() loads category parents from the DB
foreach ($rs as $gc) {
if (!empty($gc->parent)) {
$grade_category = new stdClass();
$grade_category->id = $gc->id;
$grade_category->parent = $this->get_mappingid('grade_category', $gc->parent);
$DB->update_record('grade_categories', $grade_category);
}
}
$rs->close();
// Now we can rebuild all the paths
$rs = $DB->get_recordset('grade_categories', $conditions);
foreach ($rs as $gc) {
$grade_category = new stdClass();
$grade_category->id = $gc->id;
$grade_category->path = grade_category::build_path($gc);
$grade_category->depth = substr_count($grade_category->path, '/') - 1;
$DB->update_record('grade_categories', $grade_category);
}
$rs->close();
// Restore marks items as needing update. Update everything now.
grade_regrade_final_grades($this->get_courseid());
}
}
/**
* decode all the interlinks present in restored content
* relying 100% in the restore_decode_processor that handles
* both the contents to modify and the rules to be applied
*/
class restore_decode_interlinks extends restore_execution_step {
protected function define_execution() {
// Get the decoder (from the plan)
$decoder = $this->task->get_decoder();
restore_decode_processor::register_link_decoders($decoder); // Add decoder contents and rules
// And launch it, everything will be processed
$decoder->execute();
}
}
/**
* first, ensure that we have no gaps in section numbers
* and then, rebuid the course cache
*/
class restore_rebuild_course_cache extends restore_execution_step {
protected function define_execution() {
global $DB;
// Although there is some sort of auto-recovery of missing sections
// present in course/formats... here we check that all the sections
// from 0 to MAX(section->section) exist, creating them if necessary
$maxsection = $DB->get_field('course_sections', 'MAX(section)', array('course' => $this->get_courseid()));
// Iterate over all sections
for ($i = 0; $i <= $maxsection; $i++) {
// If the section $i doesn't exist, create it
if (!$DB->record_exists('course_sections', array('course' => $this->get_courseid(), 'section' => $i))) {
$sectionrec = array(
'course' => $this->get_courseid(),
'section' => $i);
$DB->insert_record('course_sections', $sectionrec); // missing section created
}
}
// Rebuild cache now that all sections are in place
rebuild_course_cache($this->get_courseid());
cache_helper::purge_by_event('changesincourse');
cache_helper::purge_by_event('changesincoursecat');
}
}
/**
* Review all the tasks having one after_restore method
* executing it to perform some final adjustments of information
* not available when the task was executed.
*/
class restore_execute_after_restore extends restore_execution_step {
protected function define_execution() {
// Simply call to the execute_after_restore() method of the task
// that always is the restore_final_task
$this->task->launch_execute_after_restore();
}
}
/**
* Review all the (pending) block positions in backup_ids, matching by
* contextid, creating positions as needed. This is executed by the
* final task, once all the contexts have been created
*/
class restore_review_pending_block_positions extends restore_execution_step {
protected function define_execution() {
global $DB;
// Get all the block_position objects pending to match
$params = array('backupid' => $this->get_restoreid(), 'itemname' => 'block_position');
$rs = $DB->get_recordset('backup_ids_temp', $params, '', 'itemid');
// Process block positions, creating them or accumulating for final step
foreach($rs as $posrec) {
// Get the complete position object (stored as info)
$position = restore_dbops::get_backup_ids_record($this->get_restoreid(), 'block_position', $posrec->itemid)->info;
// If position is for one already mapped (known) contextid
// process it now, creating the position, else nothing to
// do, position finally discarded
if ($newctx = restore_dbops::get_backup_ids_record($this->get_restoreid(), 'context', $position->contextid)) {
$position->contextid = $newctx->newitemid;
// Create the block position
$DB->insert_record('block_positions', $position);
}
}
$rs->close();
}
}
/**
* Process all the saved module availability records in backup_ids, matching
* course modules and grade item id once all them have been already restored.
* only if all matchings are satisfied the availability condition will be created.
* At the same time, it is required for the site to have that functionality enabled.
*/
class restore_process_course_modules_availability extends restore_execution_step {
protected function define_execution() {
global $CFG, $DB;
// Site hasn't availability enabled
if (empty($CFG->enableavailability)) {
return;
}
// Get all the module_availability objects to process
$params = array('backupid' => $this->get_restoreid(), 'itemname' => 'module_availability');
$rs = $DB->get_recordset('backup_ids_temp', $params, '', 'itemid');
// Process availabilities, creating them if everything matches ok
foreach($rs as $availrec) {
$allmatchesok = true;
// Get the complete availabilityobject
$availability = restore_dbops::get_backup_ids_record($this->get_restoreid(), 'module_availability', $availrec->itemid)->info;
// Map the sourcecmid if needed and possible
if (!empty($availability->sourcecmid)) {
$newcm = restore_dbops::get_backup_ids_record($this->get_restoreid(), 'course_module', $availability->sourcecmid);
if ($newcm) {
$availability->sourcecmid = $newcm->newitemid;
} else {
$allmatchesok = false; // Failed matching, we won't create this availability rule
}
}
// Map the gradeitemid if needed and possible
if (!empty($availability->gradeitemid)) {
$newgi = restore_dbops::get_backup_ids_record($this->get_restoreid(), 'grade_item', $availability->gradeitemid);
if ($newgi) {
$availability->gradeitemid = $newgi->newitemid;
} else {
$allmatchesok = false; // Failed matching, we won't create this availability rule
}
}
if ($allmatchesok) { // Everything ok, create the availability rule
$DB->insert_record('course_modules_availability', $availability);
}
}
$rs->close();
}
}
/*
* Execution step that, *conditionally* (if there isn't preloaded information)
* will load the inforef files for all the included course/section/activity tasks
* to backup_temp_ids. They will be stored with "xxxxref" as itemname
*/
class restore_load_included_inforef_records extends restore_execution_step {
protected function define_execution() {
if ($this->task->get_preloaded_information()) { // if info is already preloaded, nothing to do
return;
}
// Get all the included tasks
$tasks = restore_dbops::get_included_tasks($this->get_restoreid());
foreach ($tasks as $task) {
// Load the inforef.xml file if exists
$inforefpath = $task->get_taskbasepath() . '/inforef.xml';
if (file_exists($inforefpath)) {
restore_dbops::load_inforef_to_tempids($this->get_restoreid(), $inforefpath); // Load each inforef file to temp_ids
}
}
}
}
/*
* Execution step that will load all the needed files into backup_files_temp
* - info: contains the whole original object (times, names...)
* (all them being original ids as loaded from xml)
*/
class restore_load_included_files extends restore_structure_step {
protected function define_structure() {
$file = new restore_path_element('file', '/files/file');
return array($file);
}
/**
* Process one <file> element from files.xml
*
* @param array $data the element data
*/
public function process_file($data) {
$data = (object)$data; // handy
// load it if needed:
// - it it is one of the annotated inforef files (course/section/activity/block)
// - it is one "user", "group", "grouping", "grade", "question" or "qtype_xxxx" component file (that aren't sent to inforef ever)
// TODO: qtype_xxx should be replaced by proper backup_qtype_plugin::get_components_and_fileareas() use,
// but then we'll need to change it to load plugins itself (because this is executed too early in restore)
$isfileref = restore_dbops::get_backup_ids_record($this->get_restoreid(), 'fileref', $data->id);
$iscomponent = ($data->component == 'user' || $data->component == 'group' || $data->component == 'badges' ||
$data->component == 'grouping' || $data->component == 'grade' ||
$data->component == 'question' || substr($data->component, 0, 5) == 'qtype');
if ($isfileref || $iscomponent) {
restore_dbops::set_backup_files_record($this->get_restoreid(), $data);
}
}
}
/**
* Execution step that, *conditionally* (if there isn't preloaded information),
* will load all the needed roles to backup_temp_ids. They will be stored with
* "role" itemname. Also it will perform one automatic mapping to roles existing
* in the target site, based in permissions of the user performing the restore,
* archetypes and other bits. At the end, each original role will have its associated
* target role or 0 if it's going to be skipped. Note we wrap everything over one
* restore_dbops method, as far as the same stuff is going to be also executed
* by restore prechecks
*/
class restore_load_and_map_roles extends restore_execution_step {
protected function define_execution() {
if ($this->task->get_preloaded_information()) { // if info is already preloaded
return;
}
$file = $this->get_basepath() . '/roles.xml';
// Load needed toles to temp_ids
restore_dbops::load_roles_to_tempids($this->get_restoreid(), $file);
// Process roles, mapping/skipping. Any error throws exception
// Note we pass controller's info because it can contain role mapping information
// about manual mappings performed by UI
restore_dbops::process_included_roles($this->get_restoreid(), $this->task->get_courseid(), $this->task->get_userid(), $this->task->is_samesite(), $this->task->get_info()->role_mappings);
}
}
/**
* Execution step that, *conditionally* (if there isn't preloaded information
* and users have been selected in settings, will load all the needed users
* to backup_temp_ids. They will be stored with "user" itemname and with
* their original contextid as paremitemid
*/
class restore_load_included_users extends restore_execution_step {
protected function define_execution() {
if ($this->task->get_preloaded_information()) { // if info is already preloaded, nothing to do
return;
}
if (!$this->task->get_setting_value('users')) { // No userinfo being restored, nothing to do
return;
}
$file = $this->get_basepath() . '/users.xml';
restore_dbops::load_users_to_tempids($this->get_restoreid(), $file); // Load needed users to temp_ids
}
}
/**
* Execution step that, *conditionally* (if there isn't preloaded information
* and users have been selected in settings, will process all the needed users
* in order to decide and perform any action with them (create / map / error)
* Note: Any error will cause exception, as far as this is the same processing
* than the one into restore prechecks (that should have stopped process earlier)
*/
class restore_process_included_users extends restore_execution_step {
protected function define_execution() {
if ($this->task->get_preloaded_information()) { // if info is already preloaded, nothing to do
return;
}
if (!$this->task->get_setting_value('users')) { // No userinfo being restored, nothing to do
return;
}
restore_dbops::process_included_users($this->get_restoreid(), $this->task->get_courseid(), $this->task->get_userid(), $this->task->is_samesite());
}
}
/**
* Execution step that will create all the needed users as calculated
* by @restore_process_included_users (those having newiteind = 0)
*/
class restore_create_included_users extends restore_execution_step {
protected function define_execution() {
restore_dbops::create_included_users($this->get_basepath(), $this->get_restoreid(), $this->task->get_userid());
}
}
/**
* Structure step that will create all the needed groups and groupings
* by loading them from the groups.xml file performing the required matches.
* Note group members only will be added if restoring user info
*/
class restore_groups_structure_step extends restore_structure_step {
protected function define_structure() {
$paths = array(); // Add paths here
$paths[] = new restore_path_element('group', '/groups/group');
$paths[] = new restore_path_element('grouping', '/groups/groupings/grouping');
$paths[] = new restore_path_element('grouping_group', '/groups/groupings/grouping/grouping_groups/grouping_group');
return $paths;
}
// Processing functions go here
public function process_group($data) {
global $DB;
$data = (object)$data; // handy
$data->courseid = $this->get_courseid();
// Only allow the idnumber to be set if the user has permission and the idnumber is not already in use by
// another a group in the same course
$context = context_course::instance($data->courseid);
if (isset($data->idnumber) and has_capability('moodle/course:changeidnumber', $context, $this->task->get_userid())) {
if (groups_get_group_by_idnumber($data->courseid, $data->idnumber)) {
unset($data->idnumber);
}
} else {
unset($data->idnumber);
}
$oldid = $data->id; // need this saved for later
$restorefiles = false; // Only if we end creating the group
// Search if the group already exists (by name & description) in the target course
$description_clause = '';
$params = array('courseid' => $this->get_courseid(), 'grname' => $data->name);
if (!empty($data->description)) {
$description_clause = ' AND ' .
$DB->sql_compare_text('description') . ' = ' . $DB->sql_compare_text(':description');
$params['description'] = $data->description;
}
if (!$groupdb = $DB->get_record_sql("SELECT *
FROM {groups}
WHERE courseid = :courseid
AND name = :grname $description_clause", $params)) {
// group doesn't exist, create
$newitemid = $DB->insert_record('groups', $data);
$restorefiles = true; // We'll restore the files
} else {
// group exists, use it
$newitemid = $groupdb->id;
}
// Save the id mapping
$this->set_mapping('group', $oldid, $newitemid, $restorefiles);
// Invalidate the course group data cache just in case.
cache_helper::invalidate_by_definition('core', 'groupdata', array(), array($data->courseid));
}
public function process_grouping($data) {
global $DB;
$data = (object)$data; // handy
$data->courseid = $this->get_courseid();
// Only allow the idnumber to be set if the user has permission and the idnumber is not already in use by
// another a grouping in the same course
$context = context_course::instance($data->courseid);
if (isset($data->idnumber) and has_capability('moodle/course:changeidnumber', $context, $this->task->get_userid())) {
if (groups_get_grouping_by_idnumber($data->courseid, $data->idnumber)) {
unset($data->idnumber);
}
} else {
unset($data->idnumber);
}
$oldid = $data->id; // need this saved for later
$restorefiles = false; // Only if we end creating the grouping
// Search if the grouping already exists (by name & description) in the target course
$description_clause = '';
$params = array('courseid' => $this->get_courseid(), 'grname' => $data->name);
if (!empty($data->description)) {
$description_clause = ' AND ' .
$DB->sql_compare_text('description') . ' = ' . $DB->sql_compare_text(':description');
$params['description'] = $data->description;
}
if (!$groupingdb = $DB->get_record_sql("SELECT *
FROM {groupings}
WHERE courseid = :courseid
AND name = :grname $description_clause", $params)) {
// grouping doesn't exist, create
$newitemid = $DB->insert_record('groupings', $data);
$restorefiles = true; // We'll restore the files
} else {
// grouping exists, use it
$newitemid = $groupingdb->id;
}
// Save the id mapping
$this->set_mapping('grouping', $oldid, $newitemid, $restorefiles);
// Invalidate the course group data cache just in case.
cache_helper::invalidate_by_definition('core', 'groupdata', array(), array($data->courseid));
}
public function process_grouping_group($data) {
global $CFG;
require_once($CFG->dirroot.'/group/lib.php');
$data = (object)$data;
groups_assign_grouping($this->get_new_parentid('grouping'), $this->get_mappingid('group', $data->groupid), $data->timeadded);
}
protected function after_execute() {
// Add group related files, matching with "group" mappings
$this->add_related_files('group', 'icon', 'group');
$this->add_related_files('group', 'description', 'group');
// Add grouping related files, matching with "grouping" mappings
$this->add_related_files('grouping', 'description', 'grouping');
// Invalidate the course group data.
cache_helper::invalidate_by_definition('core', 'groupdata', array(), array($this->get_courseid()));
}
}
/**
* Structure step that will create all the needed group memberships
* by loading them from the groups.xml file performing the required matches.
*/
class restore_groups_members_structure_step extends restore_structure_step {
protected $plugins = null;
protected function define_structure() {
$paths = array(); // Add paths here
if ($this->get_setting_value('users')) {
$paths[] = new restore_path_element('group', '/groups/group');
$paths[] = new restore_path_element('member', '/groups/group/group_members/group_member');
}
return $paths;
}
public function process_group($data) {
$data = (object)$data; // handy
// HACK ALERT!
// Not much to do here, this groups mapping should be already done from restore_groups_structure_step.
// Let's fake internal state to make $this->get_new_parentid('group') work.
$this->set_mapping('group', $data->id, $this->get_mappingid('group', $data->id));
}
public function process_member($data) {
global $DB, $CFG;
require_once("$CFG->dirroot/group/lib.php");
// NOTE: Always use groups_add_member() because it triggers events and verifies if user is enrolled.
$data = (object)$data; // handy
// get parent group->id
$data->groupid = $this->get_new_parentid('group');
// map user newitemid and insert if not member already
if ($data->userid = $this->get_mappingid('user', $data->userid)) {
if (!$DB->record_exists('groups_members', array('groupid' => $data->groupid, 'userid' => $data->userid))) {
// Check the component, if any, exists.
if (empty($data->component)) {
groups_add_member($data->groupid, $data->userid);
} else if ((strpos($data->component, 'enrol_') === 0)) {
// Deal with enrolment groups - ignore the component and just find out the instance via new id,
// it is possible that enrolment was restored using different plugin type.
if (!isset($this->plugins)) {
$this->plugins = enrol_get_plugins(true);
}
if ($enrolid = $this->get_mappingid('enrol', $data->itemid)) {
if ($instance = $DB->get_record('enrol', array('id'=>$enrolid))) {
if (isset($this->plugins[$instance->enrol])) {
$this->plugins[$instance->enrol]->restore_group_member($instance, $data->groupid, $data->userid);
}
}
}
} else {
$dir = get_component_directory($data->component);
if ($dir and is_dir($dir)) {
if (component_callback($data->component, 'restore_group_member', array($this, $data), true)) {
return;
}
}
// Bad luck, plugin could not restore the data, let's add normal membership.
groups_add_member($data->groupid, $data->userid);
$message = "Restore of '$data->component/$data->itemid' group membership is not supported, using standard group membership instead.";
debugging($message);
$this->log($message, backup::LOG_WARNING);
}
}
}
}
}
/**
* Structure step that will create all the needed scales
* by loading them from the scales.xml
*/
class restore_scales_structure_step extends restore_structure_step {
protected function define_structure() {
$paths = array(); // Add paths here
$paths[] = new restore_path_element('scale', '/scales_definition/scale');
return $paths;
}
protected function process_scale($data) {
global $DB;
$data = (object)$data;
$restorefiles = false; // Only if we end creating the group
$oldid = $data->id; // need this saved for later
// Look for scale (by 'scale' both in standard (course=0) and current course
// with priority to standard scales (ORDER clause)
// scale is not course unique, use get_record_sql to suppress warning
// Going to compare LOB columns so, use the cross-db sql_compare_text() in both sides
$compare_scale_clause = $DB->sql_compare_text('scale') . ' = ' . $DB->sql_compare_text(':scaledesc');
$params = array('courseid' => $this->get_courseid(), 'scaledesc' => $data->scale);
if (!$scadb = $DB->get_record_sql("SELECT *
FROM {scale}
WHERE courseid IN (0, :courseid)
AND $compare_scale_clause
ORDER BY courseid", $params, IGNORE_MULTIPLE)) {
// Remap the user if possible, defaut to user performing the restore if not
$userid = $this->get_mappingid('user', $data->userid);
$data->userid = $userid ? $userid : $this->task->get_userid();
// Remap the course if course scale
$data->courseid = $data->courseid ? $this->get_courseid() : 0;
// If global scale (course=0), check the user has perms to create it
// falling to course scale if not
$systemctx = context_system::instance();
if ($data->courseid == 0 && !has_capability('moodle/course:managescales', $systemctx , $this->task->get_userid())) {
$data->courseid = $this->get_courseid();
}
// scale doesn't exist, create
$newitemid = $DB->insert_record('scale', $data);
$restorefiles = true; // We'll restore the files
} else {
// scale exists, use it
$newitemid = $scadb->id;
}
// Save the id mapping (with files support at system context)
$this->set_mapping('scale', $oldid, $newitemid, $restorefiles, $this->task->get_old_system_contextid());
}
protected function after_execute() {
// Add scales related files, matching with "scale" mappings
$this->add_related_files('grade', 'scale', 'scale', $this->task->get_old_system_contextid());
}
}
/**