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<?php |
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/** |
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* Staged view-build failure policy classifier. |
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* |
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* Converts a stage number and database/PHP error text into the action the |
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* staged-build orchestrator should take. |
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*/ |
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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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// allow-no-test-found: covered through DatabaseErrorClassifier facade by tests/StageFailurePolicyClassifierTest.php and tests/StagedBuildBufferMissingPreCheckTest.php |
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class ABJ_404_Solution_DatabaseStagedFailureClassifier { |
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|
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/** @var ABJ_404_Solution_DatabaseInfrastructureErrorTaxonomy */ |
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private $taxonomy; |
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|
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/** |
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* @param ABJ_404_Solution_DatabaseInfrastructureErrorTaxonomy $taxonomy |
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*/ |
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public function __construct(ABJ_404_Solution_DatabaseInfrastructureErrorTaxonomy $taxonomy) { |
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$this->taxonomy = $taxonomy; |
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} |
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|
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/** |
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* True when a staged-build query was killed in a way the next tick can |
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* safely resume. |
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* |
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* @param string $errorText |
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* @return bool |
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*/ |
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public function isResumableStagedKill(string $errorText): bool { |
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if ($errorText === '') { |
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return false; |
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} |
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if ($this->taxonomy->connectivity()->isQueryTimeoutError($errorText)) { |
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return true; |
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} |
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if ($this->taxonomy->connectivity()->isTransientConnectionError($errorText)) { |
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return true; |
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} |
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if ($this->taxonomy->connectivity()->isDeadlockOrLockTimeoutError($errorText)) { |
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return true; |
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} |
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if (stripos($errorText, 'query execution was interrupted') !== false) { |
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return true; |
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} |
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if ($this->taxonomy->connectivity()->isPacketTooLarge($errorText)) { |
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return true; |
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} |
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return false; |
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} |
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|
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/** |
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* True when a staged-build failure is a permanent host constraint rather |
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* than a programmer-class SQL error. |
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* |
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* @param string $errorText |
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* @return bool |
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*/ |
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public function isPermanentHostSideStagedFailure(string $errorText): bool { |
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if ($errorText === '') { |
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return false; |
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} |
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if ($this->isResumableStagedKill($errorText)) { |
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return false; |
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} |
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return ($this->taxonomy->hostState()->isAccessDeniedError($errorText) |
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|| $this->taxonomy->hostState()->isReadOnlyError($errorText) |
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|| $this->taxonomy->hostState()->isDiskFullError($errorText) |
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|| $this->taxonomy->hostState()->isQuotaLimitError($errorText) |
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|| $this->taxonomy->hostState()->isOutOfMemoryError($errorText)); |
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} |
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|
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/** |
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* Classify an error raised by the staged view-build pipeline. |
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* |
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* @param int $stageNumber |
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* @param string $errorText |
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* @return string |
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*/ |
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public function classifyStageFailure(int $stageNumber, string $errorText): string { |
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if ($errorText === '') { |
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return 'rethrow'; |
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} |
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if (stripos($errorText, 'Staged view-build buffer missing') !== false) { |
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return 'resumable'; |
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} |
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if ($this->isResumableStagedKill($errorText)) { |
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return 'resumable'; |
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} |
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if (!$this->isPermanentHostSideStagedFailure($errorText)) { |
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return 'rethrow'; |
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} |
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$policy = ABJ_404_Solution_ViewBuildConfig::stageFailurePolicy($stageNumber); |
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return $policy === 'optional' ? 'skip' : 'halt'; |
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} |
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} |
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|
