Produktiv- und Testtabellen per Prefix trennen

2026-08-22 15:29:52 +02:00
parent a31a235422
commit 213dd10dbd
11 changed files with 490 additions and 24 deletions
@@ -0,0 +1,150 @@
+<?php
+
+declare(strict_types=1);
+
+require __DIR__ . '/dev-db.php';
+
+if (PHP_SAPI !== 'cli') {
+    http_response_code(404);
+    exit;
+}
+
+$options = getopt('', ['source-prefix:', 'target-prefix:', 'replace']);
+$sourcePrefix = app_validate_db_table_prefix((string)($options['source-prefix'] ?? ''));
+$targetOption = $options['target-prefix'] ?? null;
+if (!is_string($targetOption) || trim($targetOption) === '') {
+    fwrite(STDERR, "Aufruf: php scripts/migrate-table-prefix.php --target-prefix=test_ --replace [--source-prefix=alt_]\n");
+    exit(1);
+}
+$targetPrefix = app_validate_db_table_prefix($targetOption);
+
+if ($sourcePrefix === $targetPrefix) {
+    fwrite(STDERR, "Quell- und Ziel-Prefix müssen verschieden sein.\n");
+    exit(1);
+}
+if (!array_key_exists('replace', $options)) {
+    fwrite(STDERR, "Abbruch: --replace ist erforderlich, weil vorhandene Ziel-Testdaten ersetzt werden.\n");
+    exit(1);
+}
+
+/** @return string */
+$quoteIdentifier = static function (string $name): string {
+    return '`' . str_replace('`', '``', $name) . '`';
+};
+
+$rawPdo = dev_pdo_for_prefix('');
+$targetPdo = dev_pdo_for_prefix($targetPrefix);
+
+echo "Zielschema {$targetPrefix} wird auf den aktuellen Migrationsstand gebracht.\n";
+$applied = dev_apply_migrations($targetPdo);
+echo count($applied) . " neue Migration(en) für {$targetPrefix} angewendet.\n";
+
+$tableExists = static function (PDO $pdo, string $table): bool {
+    $stmt = $pdo->prepare(
+        'SELECT 1 FROM INFORMATION_SCHEMA.TABLES
+         WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ?'
+    );
+    $stmt->execute([$table]);
+
+    return $stmt->fetchColumn() !== false;
+};
+
+/** @return list<string> */
+$tableColumns = static function (PDO $pdo, string $table): array {
+    $stmt = $pdo->prepare(
+        'SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS
+         WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ?
+         ORDER BY ORDINAL_POSITION'
+    );
+    $stmt->execute([$table]);
+
+    return array_map('strval', $stmt->fetchAll(PDO::FETCH_COLUMN));
+};
+
+$targetsToClear = [];
+$copies = [];
+$sourceTableCount = 0;
+
+foreach (app_database_table_names() as $baseName) {
+    if ($baseName === 'schema_migrations') {
+        continue;
+    }
+
+    $sourceTable = app_db_table_name($baseName, $sourcePrefix);
+    $targetTable = app_db_table_name($baseName, $targetPrefix);
+    $sourceExists = $tableExists($rawPdo, $sourceTable);
+    $targetExists = $tableExists($rawPdo, $targetTable);
+
+    if ($sourceExists) {
+        $sourceTableCount++;
+    }
+    if ($sourceExists && !$targetExists) {
+        throw new RuntimeException("Zieltabelle {$targetTable} fehlt nach den Migrationen.");
+    }
+    if (!$targetExists) {
+        continue;
+    }
+
+    $targetsToClear[] = $targetTable;
+    if (!$sourceExists) {
+        continue;
+    }
+
+    $sourceColumns = $tableColumns($rawPdo, $sourceTable);
+    $targetColumns = $tableColumns($rawPdo, $targetTable);
+    if ($sourceColumns !== $targetColumns) {
+        throw new RuntimeException("Spalten von {$sourceTable} und {$targetTable} stimmen nicht überein.");
+    }
+    $copies[] = [$sourceTable, $targetTable, $sourceColumns];
+}
+
+if ($sourceTableCount === 0) {
+    throw new RuntimeException('Im Quellschema wurden keine Anwendungstabellen gefunden.');
+}
+
+$copiedRows = 0;
+$rawPdo->exec('SET FOREIGN_KEY_CHECKS = 0');
+try {
+    $rawPdo->beginTransaction();
+
+    foreach ($targetsToClear as $targetTable) {
+        $rawPdo->exec('DELETE FROM ' . $quoteIdentifier($targetTable));
+    }
+
+    foreach ($copies as [$sourceTable, $targetTable, $columns]) {
+        $quotedColumns = implode(', ', array_map($quoteIdentifier, $columns));
+        $sourceRows = (int)$rawPdo
+            ->query('SELECT COUNT(*) FROM ' . $quoteIdentifier($sourceTable))
+            ->fetchColumn();
+
+        if ($sourceRows > 0) {
+            $rawPdo->exec(
+                'INSERT INTO ' . $quoteIdentifier($targetTable)
+                . ' (' . $quotedColumns . ') SELECT ' . $quotedColumns
+                . ' FROM ' . $quoteIdentifier($sourceTable)
+            );
+        }
+
+        $targetRows = (int)$rawPdo
+            ->query('SELECT COUNT(*) FROM ' . $quoteIdentifier($targetTable))
+            ->fetchColumn();
+        if ($sourceRows !== $targetRows) {
+            throw new RuntimeException(
+                "Zeilenzahl stimmt für {$sourceTable} -> {$targetTable} nicht: {$sourceRows} != {$targetRows}."
+            );
+        }
+        $copiedRows += $targetRows;
+        echo "{$sourceTable} -> {$targetTable}: {$targetRows} Zeile(n)\n";
+    }
+
+    $rawPdo->commit();
+} catch (Throwable $e) {
+    if ($rawPdo->inTransaction()) {
+        $rawPdo->rollBack();
+    }
+    throw $e;
+} finally {
+    $rawPdo->exec('SET FOREIGN_KEY_CHECKS = 1');
+}
+
+echo "Datenübernahme abgeschlossen: {$copiedRows} Zeile(n). Das Quellschema blieb unverändert.\n";