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/>.

/**

 * This script is used to configure and execute the restore proccess.

 *

 * @package    core

 * @subpackage backup

 * @copyright  Moodle

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

 */

define('NO_OUTPUT_BUFFERING', true);

require_once('../config.php');

require_once($CFG->dirroot . '/backup/util/includes/restore_includes.php');

// Restore of large courses requires extra memory. Use the amount configured

// in admin settings.

raise_memory_limit(MEMORY_EXTRA);

$contextid   = required_param('contextid', PARAM_INT);

$stage       = optional_param('stage', restore_ui::STAGE_CONFIRM, PARAM_INT);

$cancel      = optional_param('cancel', '', PARAM_ALPHA);

// Determine if we are performing realtime for asynchronous backups.

$backupmode = backup::MODE_GENERAL;

if (async_helper::is_async_enabled()) {

    $backupmode = backup::MODE_ASYNC;

}

list($context, $course, $cm) = get_context_info_array($contextid);

navigation_node::override_active_url(new moodle_url('/backup/restorefile.php', array('contextid'=>$contextid)));

$PAGE->set_url(new moodle_url('/backup/restore.php', array('contextid'=>$contextid)));

$PAGE->set_context($context);

$PAGE->set_pagelayout('admin');

$PAGE->set_secondary_active_tab('coursereuse');

require_login($course, null, $cm);

require_capability('moodle/restore:restorecourse', $context);

$PAGE->secondarynav->set_overflow_selected_node('restore');

if (is_null($course)) {

    $coursefullname = $SITE->fullname;

    $courseshortname = $SITE->shortname;

    $courseurl = new moodle_url('/');

} else {

    $coursefullname = $course->fullname;

    $courseshortname = $course->shortname;

    $courseurl = course_get_url($course->id);

}

// Show page header.

$PAGE->set_title($courseshortname . ': ' . get_string('restore'));

$PAGE->set_heading($coursefullname);

$renderer = $PAGE->get_renderer('core','backup');

if (empty($cancel)) {

    // Do not print the header if user cancelled the process, as we are going to redirect the user.

    echo $OUTPUT->header();

}

// Prepare a progress bar which can display optionally during long-running

// operations while setting up the UI.

$slowprogress = new \core\progress\display_if_slow(get_string('preparingui', 'backup'));

// Overall, allow 10 units of progress.

$slowprogress->start_progress('', 10);

// This progress section counts for loading the restore controller.

$slowprogress->start_progress('', 1, 1);

if ($stage & restore_ui::STAGE_CONFIRM + restore_ui::STAGE_DESTINATION) {

    $restore = restore_ui::engage_independent_stage($stage, $contextid);

} else {

    $restoreid = optional_param('restore', false, PARAM_ALPHANUM);

    $rc = restore_ui::load_controller($restoreid);

    if (!$rc) {

        $restore = restore_ui::engage_independent_stage($stage/2, $contextid);

        if ($restore->process()) {

            $rc = new restore_controller($restore->get_filepath(), $restore->get_course_id(), backup::INTERACTIVE_YES,

                    $backupmode, $USER->id, $restore->get_target(), null, backup::RELEASESESSION_YES);

        }

    }

    if ($rc) {

        // check if the format conversion must happen first

        if ($rc->get_status() == backup::STATUS_REQUIRE_CONV) {

            $rc->convert();

        }

        $restore = new restore_ui($rc, array('contextid'=>$context->id));

    }

}

// End progress section for loading restore controller.

$slowprogress->end_progress();

// This progress section is for the 'process' function below.

$slowprogress->start_progress('', 1, 9);

// Depending on the code branch above, $restore may be a restore_ui or it may

// be a restore_ui_independent_stage. Either way, this function exists.

$restore->set_progress_reporter($slowprogress);

$outcome = $restore->process();

if (!$restore->is_independent() && $restore->enforce_changed_dependencies()) {

    debugging('Your settings have been altered due to unmet dependencies', DEBUG_DEVELOPER);

}

$loghtml = '';

// Finish the 'process' progress reporting section, and the overall count.

$slowprogress->end_progress();

$slowprogress->end_progress();

if (!$restore->is_independent()) {

    // Use a temporary (disappearing) progress bar to show the precheck progress if any.

    $precheckprogress = new \core\progress\display_if_slow(get_string('preparingdata', 'backup'));

    $restore->get_controller()->set_progress($precheckprogress);

    if ($restore->get_stage() == restore_ui::STAGE_PROCESS && !$restore->requires_substage() && $backupmode != backup::MODE_ASYNC) {

        try {

            // Div used to hide the 'progress' step once the page gets onto 'finished'.

            echo html_writer::start_div('', array('id' => 'executionprogress'));

            // Show the current restore state (header with bolded item).

            echo $renderer->progress_bar($restore->get_progress_bar());

            // Start displaying the actual progress bar percentage.

            $restore->get_controller()->set_progress(new \core\progress\display());

            // Prepare logger.

            $logger = new core_backup_html_logger($CFG->debugdeveloper ? backup::LOG_DEBUG : backup::LOG_INFO);

            $restore->get_controller()->add_logger($logger);

            // Do actual restore.

            $restore->execute();

            // Get HTML from logger.

            if ($CFG->debugdisplay) {

                $loghtml = $logger->get_html();

            }

            // Hide this section because we are now going to make the page show 'finished'.

            echo html_writer::end_div();

            echo html_writer::script('document.getElementById("executionprogress").style.display = "none";');

        } catch(Exception $e) {

            $restore->cleanup();

            throw $e;

        }

    } else {

        $restore->save_controller();

    }

}

echo $renderer->progress_bar($restore->get_progress_bar());

if ($restore->get_stage() != restore_ui::STAGE_PROCESS) {

    echo $restore->display($renderer);

} else if ($restore->get_stage() == restore_ui::STAGE_PROCESS && $restore->requires_substage()) {

    echo $restore->display($renderer);

} else if ($restore->get_stage() == restore_ui::STAGE_PROCESS

        && !$restore->requires_substage()

        && $backupmode == backup::MODE_ASYNC) {

    // Asynchronous restore.

    // Create adhoc task for restore.

    $restoreid = $restore->get_restoreid();

    $asynctask = new \core\task\asynchronous_restore_task();

    $asynctask->set_userid($USER->id);

    $asynctask->set_custom_data(array('backupid' => $restoreid));

    \core\task\manager::queue_adhoc_task($asynctask);

    // Add ajax progress bar and initiate ajax via a template.

    $restoreurl = new moodle_url('/backup/restorefile.php', array('contextid' => $contextid));

    $progresssetup = array(

            'backupid' => $restoreid,

            'contextid' => $contextid,

            'courseurl' => $courseurl->out(),

            'restoreurl' => $restoreurl->out()

    );

    echo $renderer->render_from_template('core/async_backup_status', $progresssetup);

}

$restore->destroy();

unset($restore);

// Display log data if there was any.

if ($loghtml != '') {

    echo $renderer->log_display($loghtml);

}

echo $OUTPUT->footer();