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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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* Adaptive-runtime helpers for the staged view-build pipeline. |
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* |
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* Two responsibilities, both keyed off behavior the build only learns at |
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* runtime on the actual host: |
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* |
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* 1. Adaptive batch size: when a host kills a batched stage's per-query |
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* (max_statement_time exceeded, lock-wait, gone-away), halve the |
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* batch size for that stage and persist it. Subsequent ticks of the |
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* same build use the smaller size, so a slow shared host eventually |
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* converges to a batch size it can actually finish. |
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* |
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* 2. Intelligent per-query timeout: probe the host's session-level |
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* max_statement_time (MariaDB) or max_execution_time (MySQL) once |
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* per request, then size our own per-query SET STATEMENT hint to |
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* fire just before the host's silent kill would. This converts a |
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* generic connection drop into a clean classifiable kill the |
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* pipeline can resume from. |
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* |
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* Sibling to ABJ_404_Solution_DataAccess_ViewQueriesStagedTrait; both are |
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* mixed into ABJ_404_Solution_DataAccess. Private members declared here |
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* are visible to the staged-build trait inside the composing class. |
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* |
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* @property ABJ_404_Solution_DatabaseCore $dbCore |
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* @property ABJ_404_Solution_Functions $f |
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* @property ABJ_404_Solution_Logging $logger |
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* @property ABJ_404_Solution_ViewReadService|null $viewReadService |
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* @property ABJ_404_Solution_LogsRepository|null $logsRepo |
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* @property int $stagedQueryTimeoutSeconds |
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* @property string $lastBatchProgressDetail |
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* @property bool $viewBuildStageOpenForShutdown |
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* @property int $viewBuildShutdownStageNumber |
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* @property string $viewBuildShutdownStageKey |
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* @property bool|null $namedLockSupportedThisRequest |
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* @property bool $fallbackLockLoggedThisRequest |
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* @property bool $usingTransientFallbackLock |
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* @property string $lastNamedLockUnsupportedReason |
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* @property string $lastNamedLockUnsupportedError |
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* @method void abortStagedBuildForMutationWatermarkAdvance(...$arguments) |
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* @method bool acquireTransientFallbackLock(...$arguments) |
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* @method bool acquireViewBuildLock(...$arguments) |
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* @method string activeBuildStartedWatermarkOptionName(...$arguments) |
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* @method bool adminMutationGateBlocks(...$arguments) |
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* @method array<mixed> advanceViewBuildOnce(...$arguments) |
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* @method void assertBuildBufferExistsOrHalt(...$arguments) |
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* @method ?bool attemptRelaxSqlModeForBuildConnection(...$arguments) |
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* @method bool bufferIntegrityPassesForPromote(...$arguments) |
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* @method string buildHaltTransientKey(...$arguments) |
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* @method string buildViewDoneCountQuery(...$arguments) |
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* @method string builtWatermarkOptionName(...$arguments) |
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* @method int bumpMutationWatermark(...$arguments) |
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* @method int bumpStageNoProgressStreak(...$arguments) |
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* @method string capturedPrefixForLog(...$arguments) |
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* @method void capturePrefixAtBuildStart(...$arguments) |
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* @method void claimForegroundViewBuildLease(...$arguments) |
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* @method string classifyAndHandleStageFailure(...$arguments) |
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* @method array<mixed> classifySessionVariableWarnings(...$arguments) |
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* @method string classifyStageFailure(...$arguments) |
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* @method void clearActiveBuildStartedWatermark(...$arguments) |
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* @method void clearAdminMutationGateOptions(...$arguments) |
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* @method void clearAllProgressOptions(...$arguments) |
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* @method void clearPhpEnvironmentProbeCache(...$arguments) |
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* @method void clearPrefixAtStageOne(...$arguments) |
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* @method void clearSessionVariablesProbeCache(...$arguments) |
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* @method void clearSqlModeProbeCache(...$arguments) |
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* @method void clearStagedBuildDegradedState(...$arguments) |
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* @method void clearViewBuildOpenStageForShutdown(...$arguments) |
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* @method void clearViewDoneHardStaleNotice(...$arguments) |
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* @method ABJ_404_Solution_Clock clock(...$arguments) |
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* @method int countLiveRedirects(...$arguments) |
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* @method int countViewBuildRows(...$arguments) |
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* @method string describeBuildProgressForNotice(...$arguments) |
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* @method string describeDegradedNotice(...$arguments) |
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* @method string describeStagedSqlFailure(...$arguments) |
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* @method array<mixed> detectAndAdjustSqlMode(...$arguments) |
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* @method float detectHostStagedQueryLimitSeconds(...$arguments) |
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* @method string doTableNameReplacements(...$arguments) |
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* @method void dropDeletemeTable(...$arguments) |
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* @method void dropTransientBuffersIfPresent(...$arguments) |
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* @method void dropTransientStagedTables(...$arguments) |
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* @method void ensureConnection(...$arguments) |
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* @method void ensureFallbackLockNoticeAndLog(...$arguments) |
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* @method int extendedTimeoutForKilledNonBatchedStage(...$arguments) |
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* @method array<mixed> fetchSessionVariablesRowOrEmpty(...$arguments) |
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* @method string filesystemEnvironmentProbeOptionName(...$arguments) |
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* @method bool forceRestartViewBuild(...$arguments) |
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* @method bool foregroundViewBuildLeaseActive(...$arguments) |
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* @method string formatPhpMemoryBytesHuman(...$arguments) |
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* @method bool gateAbortIfMutationWatermarkAdvanced(...$arguments) |
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* @method string getColumnCollationString(...$arguments) |
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* @method int getCronStuckHours(...$arguments) |
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* @method string getLowercasePrefix(...$arguments) |
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* @method array<string, mixed> getViewBuildProgress(...$arguments) |
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* @method array<mixed> getViewBuildProgressFingerprint(...$arguments) |
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* @method int getViewDoneBuiltAtTimestamp(...$arguments) |
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* @method bool haltIfPrefixChangedSinceStageOne(...$arguments) |
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* @method string humanBatchProgress(...$arguments) |
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* @method float intelligentStagedQueryTimeoutSeconds(...$arguments) |
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* @method void invalidateViewDoneServeableCache(...$arguments) |
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* @method bool isBuildHaltedForHostFailure(...$arguments) |
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* @method bool isCurrentStageOptionName(...$arguments) |
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* @method bool isNamedLockUnsupportedError(...$arguments) |
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* @method bool isResumableStagedKill(...$arguments) |
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* @method bool isStageMarkedSkipped(...$arguments) |
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* @method bool isTransientConnectionError(...$arguments) |
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* @method string lastBuildStartedWatermarkOptionName(...$arguments) |
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* @method string legacyStartedWatermarkOptionName(...$arguments) |
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* @method string localizeOrDefaultViewBuildNotice(...$arguments) |
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* @method bool logsHitsTableExists(...$arguments) |
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* @method void logTimedViewBuildStage(...$arguments) |
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* @method void logViewBuildProgressOptionWrite(...$arguments) |
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* @method void logViewBuildShutdownDiagnostics(...$arguments) |
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* @method void markBuildHaltedForHostFailure(...$arguments) |
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* @method void markBuildStage(...$arguments) |
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* @method void markStageSkippedForHostFailure(...$arguments) |
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* @method void markViewBuildStageCompleted(...$arguments) |
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* @method void markViewBuildStageStarted(...$arguments) |
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* @method void markViewDoneBuildCompleted(...$arguments) |
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* @method void markViewDoneInvalidatedByAdminMutation(...$arguments) |
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* @method int maxBuildBufferId(...$arguments) |
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* @method void maybeRaiseViewDoneHardStaleNotice(...$arguments) |
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* @method bool mutationWatermarkAdvancedSinceBuildStart(...$arguments) |
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* @method int mutationWatermarkObservedByAdminAction(...$arguments) |
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* @method int mutationWatermarkObservedByAdminActionAt(...$arguments) |
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* @method string mutationWatermarkObservedByAdminActionAtOptionName(...$arguments) |
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* @method string mutationWatermarkObservedByAdminActionOptionName(...$arguments) |
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* @method string normalizePathPrefix(...$arguments) |
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* @method bool optionReadBackMatches(...$arguments) |
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* @method int parsePhpMemoryLimitToBytes(...$arguments) |
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* @method bool pathFallsWithinAny(...$arguments) |
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* @method void performFreshStartCleanup(...$arguments) |
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* @method array<mixed> phpDisabledFunctionsList(...$arguments) |
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* @method string phpEnvironmentProbeOptionName(...$arguments) |
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* @method float phpTimeRemainingSeconds(...$arguments) |
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* @method string prefixAtStageOneOptionName(...$arguments) |
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* @method array<mixed> probeFilesystemEnvironmentForBuild(...$arguments) |
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* @method float probeFloatFromValues(...$arguments) |
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* @method int probeIntFromValues(...$arguments) |
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* @method int probeMemoryLimitForS9(...$arguments) |
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* @method array<mixed> probePhpEnvironmentForBuild(...$arguments) |
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* @method array<mixed> probeSessionVariablesAtS1Entry(...$arguments) |
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* @method bool probeSetTimeLimitAvailability(...$arguments) |
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* @method array<mixed> probeSqlModeForBuild(...$arguments) |
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* @method string probeStringFromValues(...$arguments) |
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* @method string progressOptionName(...$arguments) |
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* @method void publishBuiltWatermarkFromActiveBuildStartedWatermark(...$arguments) |
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* @method array<mixed> queryAndGetResults(...$arguments) |
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* @method int readActiveBuildStartedWatermark(...$arguments) |
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* @method array<int, array<string, mixed>> readFromViewDone(...$arguments) |
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* @method int readProgressOption(...$arguments) |
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* @method int readWatermarkOption(...$arguments) |
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* @method void rebuildViewDoneInBackground(...$arguments) |
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* @method bool reconcilePostStageElevenState(...$arguments) |
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* @method string reconcileStagedTablesAtRunnerStartup(...$arguments) |
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* @method int recordStageBatchKilled(...$arguments) |
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* @method void registerViewBuildShutdownDiagnostics(...$arguments) |
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* @method bool releaseAndReacquireBetweenStages(...$arguments) |
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* @method void releaseViewBuildLock(...$arguments) |
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* @method void resetStageNoProgressStreak(...$arguments) |
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* @method string resolveColumnCollationForStagedBuild(...$arguments) |
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* @method void runForceRestartCleanupInsideLock(...$arguments) |
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* @method bool runIdRangeBatchedUpdate(...$arguments) |
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* @method int runInsertBatch(...$arguments) |
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* @method mixed runNonBatchedStageWithKillStreakEscape(...$arguments) |
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* @method array{ran: bool, reason: string, progress: array<string, mixed>} runPageLoadFallbackAdvance(...$arguments) |
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* @method int runRedirectsForViewCountStaged(...$arguments) |
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* @method array<int, array<string, mixed>> runRedirectsForViewStaged(...$arguments) |
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* @method bool runS11SwapWithPreRenameWatermarkRecheck(...$arguments) |
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* @method bool runStagedBuildOnce(...$arguments) |
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* @method bool runStagedBuildStages6Through11(...$arguments) |
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* @method void runStagedSqlFile(...$arguments) |
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* @method void runStagedSqlFileTolerantOfDuplicateKey(...$arguments) |
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* @method mixed runTimedViewBuildStage(...$arguments) |
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* @method int safeCurrentMutationWatermark(...$arguments) |
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* @method string sanitizeUrlBeforeInsert(...$arguments) |
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* @method void scheduleViewDoneRebuild(...$arguments) |
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* @method string sessionVariablesProbeOptionName(...$arguments) |
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* @method void setFilesystemEnvAdminNotice(...$arguments) |
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* @method void setLowMemoryLimitAdminNotice(...$arguments) |
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* @method void setSessionEnvAdminNotice(...$arguments) |
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* @method void setStagedBuildDegradedNotice(...$arguments) |
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* @method void setStagedBuildHaltNotice(...$arguments) |
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* @method void setViewBuildCronStuckNotice(...$arguments) |
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* @method void setViewBuildScheduleFailedNotice(...$arguments) |
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* @method void setViewDoneHardStaleNotice(...$arguments) |
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* @method array<mixed> splitOpenBasedirPaths(...$arguments) |
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* @method string sqlModeProbeOptionName(...$arguments) |
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* @method void stageAddPreJoinIndexes(...$arguments) |
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* @method void stageAddSortIndexes(...$arguments) |
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* @method void stageCreateBuildTable(...$arguments) |
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* @method array<string, mixed> stagedQueryOptions(...$arguments) |
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* @method bool stagedTableExists(...$arguments) |
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* @method bool stageInsertRedirectsBatched(...$arguments) |
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* @method string stageNoProgressStreakOptionName(...$arguments) |
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* @method void stageRenameSwap(...$arguments) |
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* @method string stageSkipOptionName(...$arguments) |
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* @method void stageUpdateExternal(...$arguments) |
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* @method void stageUpdateHits(...$arguments) |
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* @method void stageUpdateHome(...$arguments) |
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* @method bool stageUpdatePostsBatched(...$arguments) |
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* @method void stageUpdateSpecial(...$arguments) |
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* @method bool stageUpdateTermsBatched(...$arguments) |
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* @method void stampStartedWatermarksAtS1Entry(...$arguments) |
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* @method void sweepStaleRebuildTransients(...$arguments) |
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* @method string transientFallbackLockOptionName(...$arguments) |
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* @method bool verifyBuildLockSerializesWriter(...$arguments) |
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* @method bool verifyOptionWriteCoherent(...$arguments) |
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* @method bool verifyPrefixUnchangedSinceStageOne(...$arguments) |
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* @method int viewBuildBatchSize(...$arguments) |
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* @method int viewBuildBatchSizeForStage(...$arguments) |
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* @method array<mixed> viewBuildOnlyTranslations(...$arguments) |
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* @method float viewBuildPerStageBudgetSeconds(...$arguments) |
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* @method string viewBuildTableName(...$arguments) |
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* @method string viewDeletemeTableName(...$arguments) |
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* @method int viewDoneBuiltAt(...$arguments) |
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* @method int viewDoneBuiltWatermark(...$arguments) |
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* @method int viewDoneDataBuiltAt(...$arguments) |
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* @method string viewDoneDataBuiltAtOptionName(...$arguments) |
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* @method string viewDoneFreshnessOptionName(...$arguments) |
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* @method bool viewDoneHasRows(...$arguments) |
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* @method bool viewDoneIsFresh(...$arguments) |
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* @method bool viewDoneIsServeable(...$arguments) |
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* @method int viewDoneMutationInvalidatedAt(...$arguments) |
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* @method string viewDoneMutationInvalidatedAtOptionName(...$arguments) |
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* @method bool viewDoneTableExists(...$arguments) |
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* @method string viewDoneTableName(...$arguments) |
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* @method void writeProgressOption(...$arguments) |
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* @method void writeWatermarkOption(...$arguments) |
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*/ |
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class ABJ_404_Solution_ViewBuildAdaptive extends ABJ_404_Solution_ViewBuildCollaborator { |
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|
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/** |
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* Request-lifetime cache of the host's per-statement timeout, in |
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* seconds. -1 means "not yet probed", 0 means "no host limit", > 0 |
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* is the limit the host enforces. Probed lazily by |
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* detectHostStagedQueryLimitSeconds(). |
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* |
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* @var float |
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*/ |
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private $hostStagedQueryLimitSecondsCache = -1.0; |
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|
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/** |
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* Per-stage batch size with adaptive-shrink memory. Reads the |
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* persisted shrink option for this stage (s2_batch_size / |
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* s4_batch_size / s5_batch_size); falls back to the global default |
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* when none is set. The persisted value survives across requests so |
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* a host that has already shown it cannot handle 2000-row batches |
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* keeps using the smaller size for the rest of the build. |
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* |
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* @param string $stageShortKey One of 's2_batch_size', 's4_batch_size', 's5_batch_size'. |
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* @return int Always >= VIEW_BUILD_MIN_BATCH_SIZE. |
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*/ |
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public function viewBuildBatchSizeForStage(string $stageShortKey): int { |
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$defaultSize = $this->viewBuildBatchSize(); |
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$persisted = $this->readProgressOption($stageShortKey, 0); |
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$effective = $persisted > 0 ? $persisted : $defaultSize; |
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return max(ABJ_404_Solution_ViewBuildConfig::VIEW_BUILD_MIN_BATCH_SIZE, $effective); |
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} |
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|
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/** |
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* Record that a batch in stage $stageShortKey was killed by the host |
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* (resumable kill class: max_statement_time exceeded, gone-away, |
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* lock-wait). Halves the batch size, floors at |
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* VIEW_BUILD_MIN_BATCH_SIZE, persists. Subsequent ticks pick up the |
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* smaller size via viewBuildBatchSizeForStage(). |
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* |
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* @param string $stageShortKey |
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* @return int the new batch size. |
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*/ |
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public function recordStageBatchKilled(string $stageShortKey): int { |
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$current = $this->viewBuildBatchSizeForStage($stageShortKey); |
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$shrunk = (int)max( |
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ABJ_404_Solution_ViewBuildConfig::VIEW_BUILD_MIN_BATCH_SIZE, |
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(int)floor($current / 2) |
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); |
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$this->writeProgressOption($stageShortKey, $shrunk); |
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return $shrunk; |
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} |
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|
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/** |
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* Seconds of PHP request time remaining before max_execution_time |
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* fires. PHP_INT_MAX when no limit is set (CLI / unbounded cron). |
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* |
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* Used by the batched stages to decide whether there is room to |
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* start another batch at our full per-query limit. If not, the stage |
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* yields via the wall-clock path (no batch attempt, no shrink) and |
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* the next request resumes with a fresh PHP time budget. |
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* |
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* @return float |
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*/ |
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public function phpTimeRemainingSeconds(): float { |
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$limit = (int)ini_get('max_execution_time'); |
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if ($limit <= 0) { |
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return (float)PHP_INT_MAX; |
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} |
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$start = isset($_SERVER['REQUEST_TIME_FLOAT']) && is_numeric($_SERVER['REQUEST_TIME_FLOAT']) |
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? (float)$_SERVER['REQUEST_TIME_FLOAT'] |
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: (float)microtime(true); |
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$elapsed = max(0.0, microtime(true) - $start); |
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return max(0.0, (float)$limit - $elapsed); |
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} |
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|
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/** |
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* Probe the host for its session-level per-statement timeout. Reads |
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* the MariaDB session variable max_statement_time (seconds, decimal) |
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* first, then falls back to MySQL max_execution_time (milliseconds). |
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* Returns 0.0 when no host limit is set. Cached on the instance for |
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* the request lifetime so the build pays the SHOW VARIABLES cost |
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* once, not once per stage. |
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* |
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* @return float Seconds, or 0.0 for "no host limit". |
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*/ |
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public function detectHostStagedQueryLimitSeconds(): float { |
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if ($this->hostStagedQueryLimitSecondsCache >= 0.0) { |
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return $this->hostStagedQueryLimitSecondsCache; |
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} |
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$limitSeconds = 0.0; |
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|
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$result = $this->queryAndGetResults( |
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"SHOW SESSION VARIABLES LIKE 'max_statement_time'", |
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array('log_errors' => false) |
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); |
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$rows = is_array($result['rows'] ?? null) ? $result['rows'] : array(); |
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if (!empty($rows) && is_array($rows[0])) { |
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$value = $rows[0]['Value'] ?? ($rows[0]['value'] ?? null); |
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if ($value !== null && is_numeric($value) && (float)$value > 0.0) { |
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$limitSeconds = (float)$value; |
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} |
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} |
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|
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if ($limitSeconds <= 0.0) { |
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$result = $this->queryAndGetResults( |
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"SHOW SESSION VARIABLES LIKE 'max_execution_time'", |
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array('log_errors' => false) |
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); |
| 342 |
$rows = is_array($result['rows'] ?? null) ? $result['rows'] : array(); |
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if (!empty($rows) && is_array($rows[0])) { |
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$value = $rows[0]['Value'] ?? ($rows[0]['value'] ?? null); |
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if ($value !== null && is_numeric($value) && (int)$value > 0) { |
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$limitSeconds = ((int)$value) / 1000.0; |
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} |
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} |
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} |
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|
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$this->hostStagedQueryLimitSecondsCache = max(0.0, $limitSeconds); |
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return $this->hostStagedQueryLimitSecondsCache; |
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} |
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|
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/** |
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* Compute the per-query timeout we hint to the database for a |
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* single staged-build query. The result is the smallest of: |
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* |
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* - our per-stage budget minus a 2s margin (so the hint fires |
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* before PHP max_execution_time can interrupt the request) |
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* - the host max_statement_time minus 1s (so the hint fires |
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* before the host silent kill, giving us a clean classifiable |
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* error rather than a dropped connection) |
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* |
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* Floored at 1s. The whole point of the function is to fire OUR |
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* kill before the host's; with the prior 5s floor, on hosts with |
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* `max_statement_time = 3` we would emit a 5s hint that the host |
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* pre-empts at 3s, defeating the classifiable-kill design. 1s is |
| 369 |
* the smallest sensible floor (sub-second queries are noise) but |
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* still lets the function honor genuinely-tight host limits. |
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* (2026-05-08, deadline-math-audit-2026-05-08.md concern #2.) |
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* |
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* Our-limit floor stays at 5s: that one represents "this query |
| 374 |
* is so small that the per-stage budget overhead dominates" and |
| 375 |
* has nothing to do with the host kill. The host-limit code path |
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* uses 1s. |
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* |
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* When the host has no limit set, only the per-stage budget applies. |
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* |
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* @return float Seconds. |
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*/ |
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public function intelligentStagedQueryTimeoutSeconds(): float { |
| 383 |
$ourLimit = max(5.0, (float)$this->viewBuildPerStageBudgetSeconds() - 2.0); |
| 384 |
$hostLimit = $this->detectHostStagedQueryLimitSeconds(); |
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if ($hostLimit > 0.0) { |
| 386 |
return max(1.0, min($ourLimit, $hostLimit - 1.0)); |
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} |
| 388 |
return $ourLimit; |
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} |
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|
| 391 |
/** |
| 392 |
* Per-query timeout for the next attempt of a non-batched stage that |
| 393 |
* has been killed at least once already. When the persisted streak is |
| 394 |
* 0 (no prior kill on this stage in the current build) returns the |
| 395 |
* normal intelligent timeout; otherwise returns an extended timeout |
| 396 |
* that intentionally overrides the host's session max_statement_time. |
| 397 |
* |
| 398 |
* The override works because MariaDB 10.1+ honors |
| 399 |
* `SET STATEMENT max_statement_time=N FOR <query>` even when N is |
| 400 |
* larger than the session limit: SET STATEMENT scopes the override |
| 401 |
* to the wrapped statement only. Without this, S3 / S9 / S10 -- the |
| 402 |
* non-batched stages -- would hit the host limit and retry with the |
| 403 |
* same timeout forever, looping with no escape valve (the batched |
| 404 |
* stages have one in the form of adaptive batch shrink; non-batched |
| 405 |
* stages don't, so we extend in the time dimension instead). |
| 406 |
* |
| 407 |
* Bounded by: |
| 408 |
* - VIEW_BUILD_NON_BATCHED_KILL_RETRY_CAP_SECONDS (absolute ceiling) |
| 409 |
* - phpTimeRemainingSeconds() - 2.0 (so the request returns inside |
| 410 |
* PHP max_execution_time even if the query still gets killed) |
| 411 |
* - max(1.0, ...) so we never ship a non-positive hint |
| 412 |
* |
| 413 |
* @param string $stageKillStreakOptKey Progress option key name, |
| 414 |
* e.g. 's3_kill_streak'. Production callers register the key in |
| 415 |
* the staged trait's progress option name map. |
| 416 |
* @return int Seconds. |
| 417 |
*/ |
| 418 |
public function extendedTimeoutForKilledNonBatchedStage(string $stageKillStreakOptKey): int { |
| 419 |
$streak = $this->readProgressOption($stageKillStreakOptKey, 0); |
| 420 |
if ($streak <= 0) { |
| 421 |
return (int)round($this->intelligentStagedQueryTimeoutSeconds()); |
| 422 |
} |
| 423 |
$cap = (float)ABJ_404_Solution_ViewBuildConfig::VIEW_BUILD_NON_BATCHED_KILL_RETRY_CAP_SECONDS; |
| 424 |
$phpRemaining = max(1.0, $this->phpTimeRemainingSeconds() - 2.0); |
| 425 |
return (int)round(max(1.0, min($cap, $phpRemaining))); |
| 426 |
} |
| 427 |
} |
| 428 |
|
