1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
<?php
namespace Studip\Cli\Commands\DB;
use DBManager;
use StudipPDO;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
class MigrateEngine extends Command
{
protected static $defaultName = 'db:migrate-engine';
protected function configure(): void
{
$this->setDescription('MyISAM to InnoDB');
$this->setHelp('Migrate the Engine from MyISAM to InnoDB.');
}
protected function execute(InputInterface $input, OutputInterface $output): int
{
$io = new SymfonyStyle($input, $output);
$io->info('Migration starting at ' . date('d.m.Y H:i:s'));
$start = microtime(true);
// Check if InnoDB is enabled in database server.
$engines = DBManager::get()->fetchAll('SHOW ENGINES');
$innodb = false;
foreach ($engines as $e) {
// InnoDB is found and enabled.
if ($e['Engine'] == 'InnoDB' && in_array(mb_strtolower($e['Support']), ['default', 'yes'])) {
$innodb = true;
break;
}
}
if ($innodb) {
// Get version of database system (MySQL/MariaDB/Percona)
$data = DBManager::get()->fetchFirst('SELECT VERSION() AS version');
$version = $data[0];
// Tables to ignore on engine conversion.
$ignore_tables = [];
// Fetch all tables that need to be converted.
$tables = DBManager::get()->fetchFirst(
"SELECT TABLE_NAME
FROM `information_schema`.TABLES
WHERE TABLE_SCHEMA=:database AND ENGINE=:oldengine
ORDER BY TABLE_NAME",
[
':database' => $GLOBALS['DB_STUDIP_DATABASE'],
':oldengine' => 'MyISAM',
]
);
/*
* lit_catalog needs fulltext indices which InnoDB doesn't support
* in older versions.
*/
if (version_compare($version, '5.6', '<')) {
$stmt_fulltext = DBManager::get()->prepare(
"SHOW INDEX FROM :database.:table WHERE Index_type = 'FULLTEXT'"
);
foreach ($tables as $k => $t) {
$stmt_fulltext->bindParam(':table', $t, StudipPDO::PARAM_COLUMN);
$stmt_fulltext->bindParam(':database', $DB_STUDIP_DATABASE, StudipPDO::PARAM_COLUMN);
$stmt_fulltext->execute();
if ($stmt_fulltext->fetch()) {
$ignore_tables[] = $t;
unset($tables[$k]);
}
}
if (count($ignore_tables)) {
$io->info(
'The following tables needs fulltext indices ' .
'which are not supported for InnoDB in your database ' .
'version, so the tables will be left untouched: ' .
join(',', $ignore_tables)
);
}
}
// Use Barracuda format if database supports it (5.5 upwards).
if (version_compare($version, '5.5', '>=')) {
$io->info('Found MySQL in version >= 5.5, checking if Barracuda file format is supported...');
// Get innodb_file_per_table setting
$data = DBManager::get()->fetchOne("SHOW VARIABLES LIKE 'innodb_file_per_table'");
$file_per_table = $data['Value'];
// Check if Barracuda file format is enabled
$data = DBManager::get()->fetchOne("SHOW VARIABLES LIKE 'innodb_file_format'");
$file_format = $data['Value'];
if (mb_strtolower($file_per_table) == 'on' && mb_strtolower($file_format) == 'barracuda') {
$rowformat = 'DYNAMIC';
} else {
if (mb_strtolower($file_per_table) != 'on') {
$io->info('file_per_table not set');
}
if (mb_strtolower($file_format) != 'barracuda') {
$io->info('file_format not set to Barracuda (but to ' . $file_format . ')');
}
$rowformat = 'COMPACT';
}
}
// Prepare query for table conversion.
$stmt = DBManager::get()->prepare('ALTER TABLE :database.:table ROW_FORMAT=:rowformat ENGINE=:newengine');
$stmt->bindParam(':database', $DB_STUDIP_DATABASE, StudipPDO::PARAM_COLUMN);
$stmt->bindParam(':rowformat', $rowformat, StudipPDO::PARAM_COLUMN);
$newengine = 'InnoDB';
$stmt->bindParam(':newengine', $newengine, StudipPDO::PARAM_COLUMN);
// Now convert the found tables.
foreach ($tables as $t) {
$local_start = microtime(true);
$stmt->bindParam(':table', $t, StudipPDO::PARAM_COLUMN);
$stmt->execute();
$local_end = microtime(true);
$local_duration = $local_end - $local_start;
$human_local_duration = sprintf(
'%02d:%02d:%02d',
($local_duration / 60 / 60) % 24,
($local_duration / 60) % 60,
$local_duration % 60
);
$io->info('Conversion of table ' . $t . ' took ' . $human_local_duration);
}
$end = microtime(true);
$duration = $end - $start;
$human_duration = sprintf(
'%02d:%02d:%02d',
($duration / 60 / 60) % 24,
($duration / 60) % 60,
$duration % 60
);
$io->info('Migration finished at ' . date('d.m.Y H:i:s') . ', duration ' . $human_duration);
} else {
$io->error(
'The storage engine InnoDB is not enabled in your database installation, tables cannot be converted.'
);
}
}
}
|
