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<?php |
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/** |
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* This file is part of dimtrovich/db-dumper". |
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* |
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* (c) 2024 Dimitri Sitchet Tomkeu <[email protected]> |
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* |
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* For the full copyright and license information, please view |
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* the LICENSE file that was distributed with this source code. |
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*/ |
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namespace Dimtrovich\DbDumper; |
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use Dimtrovich\DbDumper\Compressor\Factory as CompressorFactory; |
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use Dimtrovich\DbDumper\Exceptions\Exception; |
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use PDOException; |
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/** |
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* @method void onTableCreate(callable(string $tableName) $callback) |
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* @method void onTableInsert(callable(string $tableName, int $rowCount) $callback) |
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*/ |
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class Importer |
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{ |
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use Dumper; |
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/** |
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* Primary function, triggers restoration. |
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* |
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* @param string $filename Name of file to read sql dump to |
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*/ |
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public function process(string $filename): void |
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{ |
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$extension = pathinfo($filename, PATHINFO_EXTENSION); |
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switch ($extension) { |
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case 'gz': |
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case 'gzip': |
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$this->compressor = CompressorFactory::create(Option::COMPRESSION_GZIP); |
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break; |
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case 'bz2': |
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case 'bzip2': |
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$this->compressor = CompressorFactory::create(Option::COMPRESSION_BZIP2); |
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break; |
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case 'sql': |
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$this->compressor = CompressorFactory::create(Option::COMPRESSION_NONE); |
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break; |
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default: |
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throw Exception::unavailableDriverForcompression($extension); |
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} |
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if (null === $filename = $this->getFile($filename)) { |
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throw Exception::failledToRead(func_get_arg(0)); |
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} |
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if ($this->option->disable_foreign_keys_check && '' !== $disableForeignKeysCheck = $this->adapter->startDisableForeignKeysCheck()) { |
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$this->pdo->exec($disableForeignKeysCheck); |
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} |
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/** |
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* Read backup file line by line |
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*/ |
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$handle = fopen($filename, 'rb'); |
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if (! $handle) { |
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throw Exception::failledToRead($filename); |
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} |
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$buffer = ''; |
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try { |
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while (! feof($handle)) { |
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$line = fgets($handle); |
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if (substr($line, 0, 2) === '--' || ! $line) { |
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continue; // skip comments |
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} |
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$buffer .= $line; |
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// if it has a semicolon at the end, it's the end of the query |
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if (';' === substr(rtrim($line), -1, 1)) { |
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if (false !== $affectedRows = $this->pdo->exec($buffer)) { |
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if (preg_match('/^CREATE TABLE `([^`]+)`/i', $buffer, $tableName)) { |
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$this->event->emit('table.create', $tableName[1]); |
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} |
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if (preg_match('/^INSERT INTO `([^`]+)`/i', $buffer, $tableName)) { |
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$this->event->emit('table.insert', $tableName[1], $affectedRows); |
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} |
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} |
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$buffer = ''; |
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} |
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} |
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} catch (PDOException $e) { |
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throw Exception::pdoException($e->getMessage(), $buffer); |
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} finally { |
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fclose($handle); |
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unlink($filename); |
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} |
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if ($this->option->disable_foreign_keys_check && '' !== $enableForeignKeysCheck = $this->adapter->endDisableForeignKeysCheck()) { |
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$this->pdo->exec($enableForeignKeysCheck); |
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} |
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} |
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/** |
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* Return unzipped file |
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*/ |
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private function getFile(string $source): ?string |
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{ |
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$pathinfo = pathinfo($source); |
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$dest = $pathinfo['dirname'] . '/' . date('Ymd_His', time()) . '_' . $pathinfo['filename']; |
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// Remove $dest file if exists |
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if (file_exists($dest) && ! unlink($dest)) { |
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return null; |
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} |
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// Open gzipped and destination files in binary mode |
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$this->compressor->open($source, 'rb'); |
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if (! $dstFile = fopen($dest, 'wb')) { |
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return null; |
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} |
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if (! fwrite($dstFile, $this->compressor->read())) { |
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return null; |
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} |
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fclose($dstFile); |
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$this->compressor->close(); |
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return $dest; |
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} |
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} |
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dimtrovich /
php-db-dumper
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