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Merge pull request #10770 from annando/issue-10768

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Issue 10768: Avoid MySQL problems when upgrading both index and structure
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Hypolite Petovan 2021-09-26 17:45:31 -04:00 committed by GitHub
commit 79b40ad573
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1 changed files with 10 additions and 131 deletions
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141
src/Database/DBStructure.php
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@ -593,10 +593,7 @@ class DBStructure
// Compare it
foreach ($definition AS $name => $structure) {
$is_new_table = false;
$group_by = "";
$sql3 = "";
$is_unique = false;
$temp_name = $name;
if (!isset($database[$name])) {
$r = self::createTable($name, $structure, $verbose, $action);
if (!DBA::isResult($r)) {
@ -604,23 +601,6 @@ class DBStructure
}
$is_new_table = true;
} else {
foreach ($structure["indexes"] AS $indexname => $fieldnames) {
if (isset($database[$name]["indexes"][$indexname])) {
$current_index_definition = implode(",", $database[$name]["indexes"][$indexname]);
} else {
$current_index_definition = "__NOT_SET__";
}
$new_index_definition = implode(",", $fieldnames);
if ($current_index_definition != $new_index_definition) {
if ($fieldnames[0] == "UNIQUE") {
$is_unique = true;
if ($ignore == "") {
$temp_name = "temp-" . $name;
}
}
}
}
/*
* Drop the index if it isn't present in the definition
* or the definition differ from current status
@ -636,7 +616,7 @@ class DBStructure
if ($current_index_definition != $new_index_definition && substr($indexname, 0, 6) != 'local_') {
$sql2 = self::dropIndex($indexname);
if ($sql3 == "") {
$sql3 = "ALTER" . $ignore . " TABLE `" . $temp_name . "` " . $sql2;
$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
} else {
$sql3 .= ", " . $sql2;
}
@ -647,7 +627,7 @@ class DBStructure
if (!isset($database[$name]["fields"][$fieldname])) {
$sql2 = self::addTableField($fieldname, $parameters);
if ($sql3 == "") {
$sql3 = "ALTER" . $ignore . " TABLE `" . $temp_name . "` " . $sql2;
$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
} else {
$sql3 .= ", " . $sql2;
}
@ -675,7 +655,7 @@ class DBStructure
if ($current_field_definition != $new_field_definition) {
$sql2 = self::modifyTableField($fieldname, $parameters);
if ($sql3 == "") {
$sql3 = "ALTER" . $ignore . " TABLE `" . $temp_name . "` " . $sql2;
$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
} else {
$sql3 .= ", " . $sql2;
}
@ -700,11 +680,9 @@ class DBStructure
if ($current_index_definition != $new_index_definition) {
$sql2 = self::createIndex($indexname, $fieldnames);
// Fetch the "group by" fields for unique indexes
$group_by = self::groupBy($fieldnames);
if ($sql2 != "") {
if ($sql3 == "") {
$sql3 = "ALTER" . $ignore . " TABLE `" . $temp_name . "` " . $sql2;
$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
} else {
$sql3 .= ", " . $sql2;
}
@ -729,7 +707,7 @@ class DBStructure
$sql2 = self::addForeignKey($name, $fieldname, $parameters);
if ($sql3 == "") {
$sql3 = "ALTER" . $ignore . " TABLE `" . $temp_name . "` " . $sql2;
$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
} else {
$sql3 .= ", " . $sql2;
}
@ -740,7 +718,7 @@ class DBStructure
$sql2 = self::dropForeignKey($param['CONSTRAINT_NAME']);
if ($sql3 == "") {
$sql3 = "ALTER" . $ignore . " TABLE `" . $temp_name . "` " . $sql2;
$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
} else {
$sql3 .= ", " . $sql2;
}
@ -752,7 +730,7 @@ class DBStructure
$sql2 = "COMMENT = '" . DBA::escape($structurecomment) . "'";
if ($sql3 == "") {
$sql3 = "ALTER" . $ignore . " TABLE `" . $temp_name . "` " . $sql2;
$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
} else {
$sql3 .= ", " . $sql2;
}
@ -764,7 +742,7 @@ class DBStructure
$sql2 = "ENGINE = '" . DBA::escape($structure['engine']) . "'";
if ($sql3 == "") {
$sql3 = "ALTER" . $ignore . " TABLE `" . $temp_name . "` " . $sql2;
$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
} else {
$sql3 .= ", " . $sql2;
}
@ -776,7 +754,7 @@ class DBStructure
$sql2 = "DEFAULT COLLATE utf8mb4_general_ci";
if ($sql3 == "") {
$sql3 = "ALTER" . $ignore . " TABLE `" . $temp_name . "` " . $sql2;
$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
} else {
$sql3 .= ", " . $sql2;
}
@ -803,7 +781,7 @@ class DBStructure
if ($field_definition['Collation'] != $parameters['Collation']) {
$sql2 = self::modifyTableField($fieldname, $parameters);
if (($sql3 == "") || (substr($sql3, -2, 2) == "; ")) {
$sql3 .= "ALTER" . $ignore . " TABLE `" . $temp_name . "` " . $sql2;
$sql3 .= "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
} else {
$sql3 .= ", " . $sql2;
}
@ -816,36 +794,8 @@ class DBStructure
$sql3 .= ";";
}
$field_list = '';
if ($is_unique && $ignore == '') {
foreach ($database[$name]["fields"] AS $fieldname => $parameters) {
$field_list .= 'ANY_VALUE(`' . $fieldname . '`),';
}
$field_list = rtrim($field_list, ',');
}
if ($verbose) {
// Ensure index conversion to unique removes duplicates
if ($is_unique && ($temp_name != $name)) {
if ($ignore != "") {
echo "SET session old_alter_table=1;\n";
} else {
echo "DROP TABLE IF EXISTS `" . $temp_name . "`;\n";
echo "CREATE TABLE `" . $temp_name . "` LIKE `" . $name . "`;\n";
}
}
echo $sql3 . "\n";
if ($is_unique && ($temp_name != $name)) {
if ($ignore != "") {
echo "SET session old_alter_table=0;\n";
} else {
echo "INSERT INTO `" . $temp_name . "` SELECT " . DBA::anyValueFallback($field_list) . " FROM `" . $name . "`" . $group_by . ";\n";
echo "DROP TABLE `" . $name . "`;\n";
echo "RENAME TABLE `" . $temp_name . "` TO `" . $name . "`;\n";
}
}
}
if ($action) {
@ -853,50 +803,10 @@ class DBStructure
DI::config()->set('system', 'maintenance_reason', DI::l10n()->t('%s: updating %s table.', DateTimeFormat::utcNow() . ' ' . date('e'), $name));
}
// Ensure index conversion to unique removes duplicates
if ($is_unique && ($temp_name != $name)) {
if ($ignore != "") {
DBA::e("SET session old_alter_table=1;");
} else {
$r = DBA::e("DROP TABLE IF EXISTS `" . $temp_name . "`;");
if (!DBA::isResult($r)) {
$errors .= self::printUpdateError($sql3);
return $errors;
}
$r = DBA::e("CREATE TABLE `" . $temp_name . "` LIKE `" . $name . "`;");
if (!DBA::isResult($r)) {
$errors .= self::printUpdateError($sql3);
return $errors;
}
}
}
$r = DBA::e($sql3);
if (!DBA::isResult($r)) {
$errors .= self::printUpdateError($sql3);
}
if ($is_unique && ($temp_name != $name)) {
if ($ignore != "") {
DBA::e("SET session old_alter_table=0;");
} else {
$r = DBA::e("INSERT INTO `" . $temp_name . "` SELECT " . $field_list . " FROM `" . $name . "`" . $group_by . ";");
if (!DBA::isResult($r)) {
$errors .= self::printUpdateError($sql3);
return $errors;
}
$r = DBA::e("DROP TABLE `" . $name . "`;");
if (!DBA::isResult($r)) {
$errors .= self::printUpdateError($sql3);
return $errors;
}
$r = DBA::e("RENAME TABLE `" . $temp_name . "` TO `" . $name . "`;");
if (!DBA::isResult($r)) {
$errors .= self::printUpdateError($sql3);
return $errors;
}
}
}
}
}
}
@ -1060,37 +970,6 @@ class DBStructure
return sprintf("DROP FOREIGN KEY `%s`", $constraint);
}
/**
* Constructs a GROUP BY clause from a UNIQUE index definition.
*
* @param array $fieldnames
* @return string
*/
private static function groupBy(array $fieldnames)
{
if ($fieldnames[0] != "UNIQUE") {
return "";
}
array_shift($fieldnames);
$names = "";
foreach ($fieldnames AS $fieldname) {
if ($names != "") {
$names .= ",";
}
if (preg_match('|(.+)\((\d+)\)|', $fieldname, $matches)) {
$names .= "`" . DBA::escape($matches[1]) . "`";
} else {
$names .= "`" . DBA::escape($fieldname) . "`";
}
}
$sql = sprintf(" GROUP BY %s", $names);
return $sql;
}
/**
* Renames columns or the primary key of a table
*