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<?php |
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require_once __DIR__ . '/../public/index.php'; |
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$settingName = 'databaseVersion'; // This is the setting name used in the database to store the version information |
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$sqlPath = __DIR__ . '/sql/'; // This is the path where all SQL patches resides |
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/** |
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* Returns the last version available in SQL file |
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* |
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* @return int last version of patches |
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*/ |
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function getPatchVersion() |
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{ |
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global $sqlPath; |
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$lastVersion = 0; |
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$d = dir($sqlPath); |
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while (false !== ($entry = $d->read())) { |
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if (preg_match('/^version\.(\d+)\.sql$/i', $entry, $a)) { |
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if ((int) $a[1] > $lastVersion) { |
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$lastVersion = (int) $a[1]; |
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} |
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} |
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} |
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$d->close(); |
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return $lastVersion; |
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} |
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/** |
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* Returns the whole SQL (enclosed in transaction) needed to update from |
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* specified version to specified target version. |
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* |
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* @param int $currentVersion the version currently found in database |
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* @param int $targetVersion the target version to reach wich patches |
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* |
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* @return string the SQL |
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*/ |
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function buildSQL($currentVersion, $targetVersion) |
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{ |
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global $sqlPath; |
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if ($currentVersion > $targetVersion) { |
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throw new Exception('Cannot downgrade versions. Target version must be higher than current version'); |
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} |
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$sql = "START TRANSACTION;\n"; |
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$missingVersions = []; |
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for ($v = $currentVersion + 1; $v <= $targetVersion; ++$v) { |
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$file = $sqlPath . 'version.' . $v . '.sql'; |
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if (is_file($file)) { |
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$sql .= "\n-- -------- VERSION $v BEGINS ------------------------\n"; |
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$sql .= file_get_contents($file); |
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$sql .= "\n-- -------- VERSION $v ENDS --------------------------\n"; |
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} else { |
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$missingVersions[] = $v; |
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} |
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} |
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$sql .= "\nCOMMIT;\n"; |
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if (count($missingVersions)) { |
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throw new Exception('Missing SQL file for versions: ' . implode(',', $missingVersions)); |
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} |
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return $sql; |
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} |
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/** |
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* Executes a batch of SQL commands. |
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* (This is a workaround to Zend limitation to have only one command at once) |
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* |
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* @param string $sql to be executed |
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*/ |
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function executeBatchSql($sql): void |
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{ |
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$affectedRows = 0; |
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$queries = preg_split("/;+(?=([^'|^\\\']*['|\\\'][^'|^\\\']*['|\\\'])*[^'|^\\\']*[^'|^\\\']$)/", $sql); |
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foreach ($queries as $query) { |
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if (mb_strlen(trim($query)) > 0) { |
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try { |
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$result = Zend_Registry::get('db')->query($query); |
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} catch (\Exception $exception) { |
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echo 'FAILED QUERY: ' . $query . PHP_EOL; |
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throw $exception; |
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} |
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$affectedRows += $result->rowCount(); |
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} |
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} |
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echo "\n" . 'affected rows count: ' . $affectedRows . "\n"; |
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} |
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/** |
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* Do the actual update |
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*/ |
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function doUpdate(): void |
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{ |
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global $settingName; |
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try { |
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$currentVersion = (int) \mQueue\Model\Setting::get($settingName, 0)->value; |
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} catch (Exception $e) { |
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if (mb_strpos($e->getMessage(), 'SQLSTATE[42S02]') >= 0) { |
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$currentVersion = -1; |
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} else { |
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die('Caught exception: ' . $e->getMessage() . "\n"); |
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} |
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} |
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$targetVersion = getPatchVersion(); |
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echo 'current version is: ' . $currentVersion . "\n"; |
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echo 'target version is : ' . $targetVersion . "\n"; |
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if ($currentVersion == $targetVersion) { |
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echo "already up-to-date\n"; |
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return; |
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} |
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125
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$sql = buildSQL($currentVersion, $targetVersion); |
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echo $sql; |
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echo "\n_________________________________________________\n"; |
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echo "updating...\n"; |
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executeBatchSql($sql); |
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\mQueue\Model\Setting::set($settingName, $targetVersion); |
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echo "\nsuccessful update to version $targetVersion !\n"; |
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} |
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doUpdate(); |
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PowerKiKi /
mqueue
In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.