Petr Skoda
cfe070b292
AMOS BEGIN CPY [dbexport,core_dbtransfer],[pluginname,tool_dbtransfer] MOV [dbexport,core_dbtransfer],[dbexport,tool_dbtransfer] MOV [dbtransfer,core_dbtransfer],[dbtransfer,tool_dbtransfer] MOV [exportdata,core_dbtransfer],[exportdata,tool_dbtransfer] MOV [notargetconectexception,core_dbtransfer],[notargetconectexception,tool_dbtransfer] MOV [pluginname,core_dbtransfer],[pluginname,tool_dbtransfer] MOV [transferdata,core_dbtransfer],[transferdata,tool_dbtransfer] MOV [transferdbintro,core_dbtransfer],[transferdbintro,tool_dbtransfer] MOV [transferdbtoserver,core_dbtransfer],[transferdbtoserver,tool_dbtransfer] MOV [transferringdbto,core_dbtransfer],[transferringdbto,tool_dbtransfer] AMOS END
77 lines
3.0 KiB
PHP
77 lines
3.0 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Export db content to file.
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*
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* @package tool
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* @subpackage dbtransfer
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* @copyright 2008 Petr Skoda {@link http://skodak.org}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die;
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/*
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TODO:
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- exporting to server file >2GB fails in 32bit operating systems - needs warning
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- we may run out of disk space exporting to server file - we must verify the file is not truncated; read from the end of file?
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- when sending file >4GB - FAT32 limit, Apache limit, browser limit - needs warning
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- there must be some form of progress bar during export, transfer - new tracking class could be passed around
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- command line operation - could work around some 2G/4G limits in PHP; useful for cron full backups
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- by default allow exporting into empty database only (no tables with the same prefix yet)
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- all dangerous operation (like deleting of all data) should be confirmed by key found in special file in dataroot
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(user would need file access to dataroot which might prevent various "accidents")
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- implement "Export/import running" notification in lib/setup.php (similar to new upgrade flag in config table)
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- gzip compression when storing xml file - the xml is very verbose and full of repeated tags (zip is not suitable here at all)
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this could help us keep the files bellow 2G (expected ratio is > 10:1)
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*/
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require_once($CFG->libdir.'/adminlib.php');
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require_once($CFG->libdir.'/dtllib.php');
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function dbtransfer_export_xml_database($description, $mdb) {
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@set_time_limit(0);
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session_get_instance()->write_close(); // release session
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header('Content-Type: application/xhtml+xml; charset=utf-8');
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header('Content-Disposition: attachment; filename=database.xml');
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header('Expires: 0');
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header('Cache-Control: must-revalidate,post-check=0,pre-check=0');
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header('Pragma: public');
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while(@ob_flush());
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$var = new file_xml_database_exporter('php://output', $mdb);
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$var->export_database($description);
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// no more output
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die;
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}
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function dbtransfer_transfer_database($sourcedb, $targetdb, $feedback = null) {
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@set_time_limit(0);
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session_get_instance()->write_close(); // release session
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$var = new database_mover($sourcedb, $targetdb, true, $feedback);
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$var->export_database(null);
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}
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