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<?php |
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|
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if (!defined('ABSPATH')) { |
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exit; |
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} |
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|
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/** |
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* Executes SQL statements inside a transaction with deadlock-aware retry. |
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* |
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* Transaction lifecycle is separate from the single-query pipeline: it owns |
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* BEGIN/COMMIT/ROLLBACK bookkeeping, infrastructure-error classification for |
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* statement failures, and retry delay for deadlock or lock-wait timeouts. |
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*/ |
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class ABJ_404_Solution_DatabaseTransactionExecutor { |
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|
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/** @var ABJ_404_Solution_DatabaseCore */ |
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private $core; |
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|
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/** @var ABJ_404_Solution_Logging */ |
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private $logger; |
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|
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/** |
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* @param ABJ_404_Solution_DatabaseCore $core |
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* @param ABJ_404_Solution_Logging $logger |
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*/ |
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public function __construct(ABJ_404_Solution_DatabaseCore $core, $logger) { |
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$this->core = $core; |
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$this->logger = $logger; |
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} |
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|
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/** |
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* @param array<int, string> $statementArray |
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* @return void |
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*/ |
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public function executeAsTransaction(array $statementArray): void { |
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global $wpdb; |
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$maxAttempts = 3; |
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$lastException = null; |
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$lastError = ''; |
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|
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for ($attempt = 1; $attempt <= $maxAttempts; $attempt++) { |
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$allIsWell = true; |
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$lastError = ''; |
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$lastException = null; |
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try { |
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// DAO-bypass-approved: transaction boundary must run on the active wpdb connection before grouped statements execute. |
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$wpdb->query('START TRANSACTION'); |
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foreach ($statementArray as $statement) { |
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// DAO-bypass-approved: transaction executor must preserve same-connection transaction state and last_error per statement. |
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$wpdb->query($statement); |
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// Null-safe read (matches DataAccess.php/StatsRepository.php/NGramFilter.php): |
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// a partial test double or a future custom wpdb drop-in that omits |
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// last_error must not raise an "undefined property" notice here. |
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$statementError = trim((string)($wpdb->last_error ?? '')); |
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if ($statementError !== '') { |
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$allIsWell = false; |
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$lastError = $statementError; |
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if (!$this->core->errorClassifier()->classifyAndHandleInfrastructureError($lastError)) { |
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$this->logger->errorMessage("Error executing SQL transaction: " . $lastError); |
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$this->logger->errorMessage("SQL causing the transaction error: " . $statement); |
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} |
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break; |
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} |
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} |
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} catch (Throwable $ex) { |
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$allIsWell = false; |
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$lastException = $ex; |
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$lastError = $ex->getMessage(); |
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} |
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|
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if ($allIsWell && $lastException == null) { |
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// DAO-bypass-approved: transaction boundary must commit the active wpdb connection. |
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$wpdb->query('commit'); |
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return; |
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} |
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|
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// DAO-bypass-approved: transaction boundary must roll back the active wpdb connection after any grouped statement failure. |
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$wpdb->query('rollback'); |
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$retryable = $this->core->errorClassifier()->taxonomy()->connectivity()->isDeadlockOrLockTimeoutError($lastError); |
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if (!$retryable || $attempt >= $maxAttempts) { |
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break; |
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} |
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$sleepMicros = 100000 + random_int(0, 200000); |
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usleep($sleepMicros); |
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} |
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|
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if ($lastException != null) { |
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throw $lastException; |
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} |
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if ($lastError !== '') { |
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throw new Exception($lastError); // allow-raw-error: behavior preserved from pre-extraction DatabaseCore::executeAsTransaction |
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} |
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} |
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} |
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|
