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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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* Self-heals a stale DB_VERSION on the frontend so end users get redirects |
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* without needing an admin visit (task 233). Throttled by a transient so |
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* concurrent 404s don't all queue on the synchronizer lock inside |
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* PluginLogicVersionUpgrader::upgradeIfNeeded(). If recovery cannot close |
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* the gap (lock held, cooldown active, migration repeatedly throws), the |
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* caller falls through to a degraded redirect lookup (task 234) so manual |
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* redirects keep serving instead of every 404 falling to the theme 404 page. |
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*/ |
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class ABJ_404_Solution_FrontendDbVersionRecovery { |
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|
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/** @var ABJ_404_Solution_PluginLogic */ |
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private $logic; |
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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_PluginLogic $logic |
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* @param ABJ_404_Solution_Logging $logger |
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*/ |
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function __construct($logic, $logger) { |
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$this->logic = $logic; |
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$this->logger = $logger; |
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} |
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|
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/** |
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* @param array<string, mixed> $options Current options as returned by getOptions(true). |
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* @return array<string, mixed> Options after attempted recovery. |
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*/ |
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function recoverIfStale(array $options): array { |
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$cooldownKey = 'abj404_frontend_db_recovery_cooldown'; |
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|
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if (function_exists('get_transient') && get_transient($cooldownKey)) { |
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return $options; |
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} |
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|
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// Cooldown is set BEFORE attempting recovery so concurrent requests |
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// bail immediately rather than piling onto the lock. |
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if (function_exists('set_transient')) { |
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set_transient($cooldownKey, '1', 5 * 60); |
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} |
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|
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try { |
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$upgraded = $this->logic->versionUpgrader()->upgradeIfNeeded($options); |
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if (is_array($upgraded)) { |
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$options = $upgraded; |
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} |
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} catch (\Throwable $e) { |
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$this->logger->warn('Frontend DB version recovery failed: ' . $e->getMessage()); |
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return $options; |
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} |
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|
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// upgradeIfNeeded ends in updateOptions() which clears the resolved- |
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// options cache, so getOptions(true) returns fresh values from the DB. |
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$fresh = $this->getOptions(); |
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if (isset($fresh['DB_VERSION']) && defined('ABJ404_VERSION') && $fresh['DB_VERSION'] == ABJ404_VERSION) { |
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return $fresh; |
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} |
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|
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$observed = (isset($fresh['DB_VERSION']) && is_scalar($fresh['DB_VERSION'])) |
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? (string)$fresh['DB_VERSION'] |
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: '(missing)'; |
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$expected = defined('ABJ404_VERSION') ? ABJ404_VERSION : '(unknown)'; |
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$this->logger->warn(sprintf( |
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'Frontend DB_VERSION still stale after recovery attempt: have=%s expected=%s', |
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$observed, |
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$expected |
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)); |
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return $fresh; |
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} |
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|
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/** |
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* @return array<string, mixed> |
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*/ |
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private function getOptions(): array { |
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$options = $this->logic->optionsResolver()->getOptions(true); |
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return is_array($options) ? $options : array(); |
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} |
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} |
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|
