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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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* Coordinates admin redirects/captured table row and count reads. |
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* |
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* Serves the live single-table read off wp_abj404_redirects (Denorm Step 3b): |
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* the ordered/filtered page is fetched via ViewQueryBuilder and the four derived |
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* columns are resolved live per visible row by RedirectsViewLiveResolver. Owns |
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* per-request count memoization, read-outcome classification, and failure |
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* diagnostics for the public getRedirectsForView() / getRedirectsForViewCount() |
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* facade methods. No staged view_done materialization, no snapshot result cache. |
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*/ |
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class ABJ_404_Solution_AdminViewReadCoordinator { |
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|
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/** @var ABJ_404_Solution_DatabaseCore */ |
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private $dbCore; |
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|
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/** @var ABJ_404_Solution_ViewQueryBuilder */ |
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private $queryBuilder; |
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|
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/** @var ABJ_404_Solution_ViewDiagnostics */ |
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private $diagnostics; |
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|
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/** @var ABJ_404_Solution_ViewCacheInvalidator */ |
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private $cacheInvalidator; |
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|
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/** @var ABJ_404_Solution_RedirectsViewLiveResolver */ |
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private $liveResolver; |
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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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/** @var array<string, int> */ |
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private $redirectsForViewCountRequestCache = array(); |
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|
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/** @var ABJ_404_Solution_ViewReadOutcome Classifier for the last row-read outcome (i455). */ |
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private $lastReadOutcome; |
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|
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/** |
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* @param ABJ_404_Solution_DatabaseCore $dbCore |
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* @param ABJ_404_Solution_ViewQueryBuilder $queryBuilder |
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* @param ABJ_404_Solution_ViewDiagnostics $diagnostics |
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* @param ABJ_404_Solution_ViewCacheInvalidator $cacheInvalidator |
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* @param ABJ_404_Solution_RedirectsViewLiveResolver $liveResolver |
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* @param ABJ_404_Solution_Logging $logger |
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*/ |
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public function __construct( |
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ABJ_404_Solution_DatabaseCore $dbCore, |
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ABJ_404_Solution_ViewQueryBuilder $queryBuilder, |
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ABJ_404_Solution_ViewDiagnostics $diagnostics, |
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ABJ_404_Solution_ViewCacheInvalidator $cacheInvalidator, |
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ABJ_404_Solution_RedirectsViewLiveResolver $liveResolver, |
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$logger |
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) { |
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$this->dbCore = $dbCore; |
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$this->queryBuilder = $queryBuilder; |
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$this->diagnostics = $diagnostics; |
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$this->cacheInvalidator = $cacheInvalidator; |
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$this->liveResolver = $liveResolver; |
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$this->logger = $logger; |
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$this->lastReadOutcome = new ABJ_404_Solution_ViewReadOutcome(); |
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} |
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|
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/** |
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* Single-table redirects read for one page (Denorm Step 3b): fetch the |
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* ordered/filtered page off wp_abj404_redirects, then resolve the visible |
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* rows' derived/display values live and write the four denorm columns back. |
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* This is the live read path that replaced the staged view_done read; it is |
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* the single source of truth for the live single-table read (ViewReadService |
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* delegates its readRedirectsSingleTable() here). |
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* |
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* The derived columns are still READ (and live-resolved for display) when |
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* present, but the live write-back can be suppressed per-request via the |
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* `_abj404_suppress_denorm_writeback` tableOptions flag: a change-detection |
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* probe (the detect-only signature poll) resolves values to compute its |
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* signature but must not mutate rows. The full-render path leaves the flag |
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* unset, so it still persists fresh values (the freshness mechanism). |
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* |
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* @param string $sub |
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* @param array<string, mixed> $tableOptions |
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* @return array<int, array<string, mixed>> |
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*/ |
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public function readRedirectsSingleTable(string $sub, array $tableOptions): array { |
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$readiness = $this->liveResolver->schemaReadiness(); |
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$derivedPresent = $readiness->derivedColumnsPresent(); |
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// Tell the query builder whether each narrow sort key is SAFE to ORDER BY, |
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// index-ordered. The single authority is RedirectsViewLiveResolver:: |
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// sortKeyReadyForColumn (column exists AND its composite indexes exist AND |
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// the legacy-row drain latch is set). The header UI consults the same |
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// predicate via ViewReadService::isSortReadyForOrderby, so the sort the |
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// query refuses to order by is exactly the one the header disables. When a |
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// key is not ready the query builder serves the safe default instead of a |
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// wide-column filesort that, on a large captured table, can exceed a shared |
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// host's max_statement_time. Same _abj404_* option convention as the |
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// timeout / suppress-writeback flags. |
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$tableOptions['_abj404_dest_sort_key_present'] = $readiness->sortKeyReadyForColumn('dest_sort_key'); |
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$tableOptions['_abj404_url_sort_key_present'] = $readiness->sortKeyReadyForColumn('url_sort_key'); |
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$rows = $this->queryBuilder->readRedirectsSingleTable($sub, $tableOptions, $derivedPresent); |
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$persist = $derivedPresent && empty($tableOptions['_abj404_suppress_denorm_writeback']); |
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return $this->liveResolver->resolveAndPersistVisibleRows($rows, $persist); |
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} |
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|
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/** |
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* Single-table filtered count against wp_abj404_redirects (Denorm Step 3b). |
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* |
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* @param string $sub |
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* @param array<string, mixed> $tableOptions |
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* @return int |
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*/ |
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public function countRedirectsSingleTable(string $sub, array $tableOptions): int { |
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return $this->queryBuilder->countRedirectsSingleTable($sub, $tableOptions, |
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$this->liveResolver->schemaReadiness()->derivedColumnsPresent()); |
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} |
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|
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/** |
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* @param string $sub |
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* @param array<string, mixed> $tableOptions |
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* @return array<int|string, mixed> |
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*/ |
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public function getRedirectsForView($sub, $tableOptions) { |
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$tableOptionsArray = is_array($tableOptions) ? $tableOptions : array(); |
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$throwOnQueryError = !empty($tableOptionsArray['_abj404_throw_on_view_query_error']); |
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|
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try { |
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$rows = $this->readRedirectsSingleTable((string)$sub, $tableOptionsArray); |
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} catch (Throwable $e) { |
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$this->lastReadOutcome->markErrored(); |
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if ($throwOnQueryError) { |
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$failureMarker = '/* single-table: ' . $e->getMessage() . ' */'; |
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$diagnostics = $this->diagnostics->captureViewQueryFailureDiagnostics( |
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(string)$sub, |
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$failureMarker, |
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$tableOptionsArray, |
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array('last_error' => $e->getMessage(), 'timed_out' => false) |
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); |
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$diagnostics['failed_query_label'] = 'getRedirectsForView'; |
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$diagnostics['staged_error'] = $e->getMessage(); |
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$message = 'getRedirectsForView failed; last_error=' . $e->getMessage() |
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. '; timed_out=false; sql_source=' . $failureMarker; |
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throw new ABJ_404_Solution_ViewQueryFailureException($message, $diagnostics); |
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} |
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$this->logger->errorMessage('[single-table] getRedirectsForView failed: ' . $e->getMessage(), |
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$e instanceof \Exception ? $e : null); |
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return array(); |
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} |
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|
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$this->logger->debugMessage(sprintf( |
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'[single-table] getRedirectsForView returned %d rows for page %s', |
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count($rows), |
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(string)$sub |
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)); |
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$this->finalizeReadStatusForRows($rows, (string)$sub, $tableOptionsArray); |
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|
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return $rows; |
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} |
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|
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/** |
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* Record how to read the last getRedirectsForView() result (i455). The |
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* live source count is probed lazily, only for empty rows. |
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* |
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* @param array<int|string, mixed> $rows |
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* @param string $sub |
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* @param array<string, mixed> $tableOptions |
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* @return void |
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*/ |
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private function finalizeReadStatusForRows(array $rows, string $sub, array $tableOptions): void { |
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$this->lastReadOutcome->classifyRows($rows, $tableOptions, function () use ($sub, $tableOptions): int { |
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try { |
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return $this->getRedirectsForViewCount($sub, $tableOptions); |
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} catch (Throwable $e) { |
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$this->logger->debugMessage('[single-table] live-count probe for empty read failed: ' . $e->getMessage()); |
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return -1; |
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} |
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}); |
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} |
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|
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/** |
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* Whether the last getRedirectsForView() result is NOT a trustworthy empty |
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* listing (errored/stale-empty). See ABJ_404_Solution_ViewReadOutcome. |
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* |
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* @return bool |
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*/ |
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public function lastRedirectsViewReadWasIncomplete(): bool { |
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return $this->lastReadOutcome->wasIncomplete(); |
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} |
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|
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/** |
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* @param string $sub |
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* @param array<string, mixed> $tableOptions |
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* @return int Negative when the count query was incomplete or unavailable. |
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*/ |
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public function getRedirectsForViewCount(string $sub, array $tableOptions): int { |
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$queryTimeout = isset($tableOptions['_abj404_query_timeout']) && is_numeric($tableOptions['_abj404_query_timeout']) |
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? max(1, intval($tableOptions['_abj404_query_timeout'])) : 0; |
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$throwOnQueryError = !empty($tableOptions['_abj404_throw_on_view_query_error']); |
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$requestCountCacheKey = (string)$sub . '|' . md5(serialize($tableOptions)); |
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|
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if (array_key_exists($requestCountCacheKey, $this->redirectsForViewCountRequestCache)) { |
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return intval($this->redirectsForViewCountRequestCache[$requestCountCacheKey]); |
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} |
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|
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$rawFilterText = is_string($tableOptions['filterText'] ?? null) ? $tableOptions['filterText'] : ''; |
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if ($rawFilterText !== '') { |
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return $this->getFilteredViewCount($sub, $tableOptions, $throwOnQueryError, $requestCountCacheKey); |
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} |
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|
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return $this->getUnfilteredViewCount($sub, $tableOptions, $queryTimeout, $throwOnQueryError, $requestCountCacheKey); |
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} |
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|
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/** |
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* @param string $sub |
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* @param array<string, mixed> $tableOptions |
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* @param bool $throwOnQueryError |
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* @param string $requestCountCacheKey |
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* @return int |
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*/ |
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private function getFilteredViewCount( |
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string $sub, |
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array $tableOptions, |
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bool $throwOnQueryError, |
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string $requestCountCacheKey |
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): int { |
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try { |
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$countValue = $this->countRedirectsSingleTable((string)$sub, $tableOptions); |
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$this->redirectsForViewCountRequestCache[$requestCountCacheKey] = $countValue; |
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return $countValue; |
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} catch (Throwable $e) { |
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return $this->handleFilteredCountFailure($sub, $tableOptions, $throwOnQueryError, $requestCountCacheKey, $e); |
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} |
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} |
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|
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/** |
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* @param string $sub |
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* @param array<string, mixed> $tableOptions |
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* @param bool $throwOnQueryError |
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* @param string $requestCountCacheKey |
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* @param Throwable $e |
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* @return int |
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*/ |
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private function handleFilteredCountFailure( |
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string $sub, |
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array $tableOptions, |
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bool $throwOnQueryError, |
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string $requestCountCacheKey, |
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Throwable $e |
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): int { |
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if ($throwOnQueryError) { |
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$failureMarker = '/* single-table-count: ' . $e->getMessage() . ' */'; |
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$diagnostics = $this->diagnostics->captureViewQueryFailureDiagnostics( |
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(string)$sub, |
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$failureMarker, |
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$tableOptions, |
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array('last_error' => $e->getMessage(), 'timed_out' => false) |
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); |
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$diagnostics['failed_query_label'] = 'getRedirectsForViewCount'; |
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$diagnostics['staged_error'] = $e->getMessage(); |
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throw new ABJ_404_Solution_ViewQueryFailureException($e->getMessage(), $diagnostics); |
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} |
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$this->logger->errorMessage('[single-table] getRedirectsForViewCount failed: ' . $e->getMessage(), |
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$e instanceof \Exception ? $e : null); |
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$this->redirectsForViewCountRequestCache[$requestCountCacheKey] = -1; |
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return -1; |
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} |
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|
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/** |
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* @param string $sub |
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* @param array<string, mixed> $tableOptions |
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* @param int $queryTimeout |
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* @param bool $throwOnQueryError |
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* @param string $requestCountCacheKey |
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* @return int |
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*/ |
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private function getUnfilteredViewCount( |
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string $sub, |
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array $tableOptions, |
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int $queryTimeout, |
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bool $throwOnQueryError, |
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string $requestCountCacheKey |
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): int { |
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$query = $this->queryBuilder->getOptimizedRedirectsForViewCountQuery($sub, $tableOptions); |
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$this->cacheInvalidator->setSqlBigSelects(); |
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$queryOptions = $queryTimeout > 0 ? array('timeout' => $queryTimeout) : array(); |
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$results = $this->dbCore->queryAndGetResults($query, $queryOptions); |
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$lastErrorRaw = $results['last_error'] ?? ''; |
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$lastError = is_string($lastErrorRaw) ? $lastErrorRaw : ''; |
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|
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$queryFailed = !empty($results['timed_out']) || trim($lastError) !== ''; |
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if ($queryFailed) { |
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if ($throwOnQueryError) { |
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$message = $this->diagnostics->formatViewQueryFailureMessage('getRedirectsForViewCount', $query, $results); |
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$diagnostics = $this->diagnostics->captureViewQueryFailureDiagnostics($sub, $query, $tableOptions, $results); |
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$diagnostics['failed_query_label'] = 'getRedirectsForViewCount'; |
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throw new ABJ_404_Solution_ViewQueryFailureException($message, $diagnostics); |
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} |
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$this->redirectsForViewCountRequestCache[$requestCountCacheKey] = -1; |
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return -1; |
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} |
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$rows = is_array($results['rows']) ? $results['rows'] : array(); |
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if (empty($rows) || !is_array($rows[0])) { |
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$this->redirectsForViewCountRequestCache[$requestCountCacheKey] = -1; |
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return -1; |
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} |
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$row = is_array($rows[0] ?? null) ? $rows[0] : array(); |
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$rawCount = $row['count'] ?? $row['COUNT(*)'] ?? reset($row); |
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if (!is_numeric($rawCount)) { |
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$this->redirectsForViewCountRequestCache[$requestCountCacheKey] = -1; |
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return -1; |
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} |
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$countValue = intval($rawCount); |
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$this->redirectsForViewCountRequestCache[$requestCountCacheKey] = $countValue; |
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return $countValue; |
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} |
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} |
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|
