Proyectos de Subversion Moodle

<?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/>.

/**

 * @package moodlecore

 * @subpackage backup-plan

 * @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}

 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

/**

 * Implementable class defining the needed stuf for one restore plan

 *

 * TODO: Finish phpdocs

 */

class restore_plan extends base_plan implements loggable {

    /**

     *

     * @var restore_controller

     */

    protected $controller; // The restore controller building/executing this plan

    protected $basepath;   // Fullpath to dir where backup is available

    protected $preloaded;  // When executing the plan, do we have preloaded (from checks) info

    protected $decoder;    // restore_decode_processor in charge of decoding all the interlinks

    protected $missingmodules; // to flag if restore has detected some missing module

    protected $excludingdactivities; // to flag if restore settings are excluding any activity

    /**

     * Constructor - instantiates one object of this class

     */

    public function __construct($controller) {

        global $CFG;

        if (! $controller instanceof restore_controller) {

            throw new restore_plan_exception('wrong_restore_controller_specified');

        }

        $backuptempdir    = make_backup_temp_directory('');

        $this->controller = $controller;

        $this->basepath   = $backuptempdir . '/' . $controller->get_tempdir();

        $this->preloaded  = false;

        $this->decoder    = new restore_decode_processor($this->get_restoreid(), $this->get_info()->original_wwwroot, $CFG->wwwroot);

        $this->missingmodules = false;

        $this->excludingdactivities = false;

        parent::__construct('restore_plan');

    }

    /**

     * Destroy all circular references. It helps PHP 5.2 a lot!

     */

    public function destroy() {

        // No need to destroy anything recursively here, direct reset

        $this->controller = null;

        // Delegate to base plan the rest

        parent::destroy();

    }

    public function build() {

        restore_plan_builder::build_plan($this->controller); // We are moodle2 always, go straight to builder

        $this->built = true;

    }

    public function get_restoreid() {

        return $this->controller->get_restoreid();

    }

    public function get_courseid() {

        return $this->controller->get_courseid();

    }

    public function get_mode() {

        return $this->controller->get_mode();

    }

    public function get_basepath() {

        return $this->basepath;

    }

    public function get_logger() {

        return $this->controller->get_logger();

    }

    /**

     * Gets the progress reporter, which can be used to report progress within

     * the backup or restore process.

     *

     * @return \core\progress\base Progress reporting object

     */

    public function get_progress() {

        return $this->controller->get_progress();

    }

    public function get_info() {

        return $this->controller->get_info();

    }

    public function get_target() {

        return $this->controller->get_target();

    }

    public function get_userid() {

        return $this->controller->get_userid();

    }

    public function get_decoder() {

        return $this->decoder;

    }

    public function is_samesite() {

        return $this->controller->is_samesite();

    }

    public function is_missing_modules() {

        return $this->missingmodules;

    }

    public function is_excluding_activities() {

        return $this->excludingdactivities;

    }

    public function set_preloaded_information() {

        $this->preloaded = true;

    }

    public function get_preloaded_information() {

        return $this->preloaded;

    }

    public function get_tempdir() {

        return $this->controller->get_tempdir();

    }

    public function set_missing_modules() {

        $this->missingmodules = true;

    }

    public function set_excluding_activities() {

        $this->excludingdactivities = true;

    }

    public function log($message, $level, $a = null, $depth = null, $display = false) {

        backup_helper::log($message, $level, $a, $depth, $display, $this->get_logger());

    }

    /**

     * Function responsible for executing the tasks of any plan

     */

    public function execute() {

        if ($this->controller->get_status() != backup::STATUS_AWAITING) {

            throw new restore_controller_exception('restore_not_executable_awaiting_required', $this->controller->get_status());

        }

        $this->controller->set_status(backup::STATUS_EXECUTING);

        parent::execute();

        $this->controller->set_status(backup::STATUS_FINISHED_OK);

        // Check if we are restoring a course.

        if ($this->controller->get_type() === backup::TYPE_1COURSE) {

            // Check to see if we are on the same site to pass original course info.

            $issamesite = $this->controller->is_samesite();

            $otherarray = array('type' => $this->controller->get_type(),

                                'target' => $this->controller->get_target(),

                                'mode' => $this->controller->get_mode(),

                                'operation' => $this->controller->get_operation(),

                                'samesite' => $issamesite

            );

            if ($this->controller->is_samesite()) {

                $otherarray['originalcourseid'] = $this->controller->get_info()->original_course_id;

            }

            // Trigger a course restored event.

            $event = \core\event\course_restored::create(array(

                'objectid' => $this->get_courseid(),

                'userid' => $this->get_userid(),

                'context' => context_course::instance($this->get_courseid()),

                'other' => $otherarray

            ));

            $event->trigger();

        }

    }

    /**

     * Execute the after_restore methods of all the executed tasks in the plan

     */

    public function execute_after_restore() {

        // Simply iterate over each task in the plan and delegate to them the execution

        $progress = $this->get_progress();

        $progress->start_progress($this->get_name() .

                ': executing execute_after_restore for all tasks', count($this->tasks));

        /** @var base_task $task */

        foreach ($this->tasks as $task) {

            $task->execute_after_restore();

            $progress->increment_progress();

        }

        $progress->end_progress();

    }

    /**

     * Compares the provided moodle version with the one the backup was taken from.

     *

     * @param int $version Moodle version number (YYYYMMDD or YYYYMMDDXX)

     * @param string $operator Operator to compare the provided version to the backup version. {@see version_compare()}

     * @return bool True if the comparison passes.

     */

    public function backup_version_compare(int $version, string $operator): bool {

        preg_match('/(\d{' . strlen($version) . '})/', $this->get_info()->moodle_version, $matches);

        $backupbuild = (int)$matches[1];

        return version_compare($backupbuild, $version, $operator);

    }

    /**

     * Compares the provided moodle release with the one the backup was taken from.

     *

     * @param string $release Moodle release (X.Y or X.Y.Z)

     * @param string $operator Operator to compare the provided release to the backup release. {@see version_compare()}

     * @return bool True if the comparison passes.

     */

    public function backup_release_compare(string $release, string $operator): bool {

        return version_compare($this->get_info()->backup_release, $release, $operator);

    }

}

/*

 * Exception class used by all the @restore_plan stuff

 */

class restore_plan_exception extends base_plan_exception {

    public function __construct($errorcode, $a=NULL, $debuginfo=null) {

        parent::__construct($errorcode, $a, $debuginfo);

    }

}