chore: initial snapshot of 2meet-data-optimizer v0.1.0
Baseline before backporting wp-data-optimizer v3.0.1-v3.4.6. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TbG1keQQ7XBa7qMQY16KCY
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<?php
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// phpcs:ignore WPDO.AntiEAV -- platform diagnostic: raw meta inspection for FSM state advisor
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/**
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* TMDO_FSM_Advisor — Recommends the next FSM state per module (v2.4.0 M12).
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*
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* Reads：
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* - Current state via TMDO_Feature_Flags::get( $module )
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* - Time-in-current-state via wp_options.wpdo_fsm_state_entered (set by
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* TMDO_FSM_Guard::record_entry() since v2.2.0 M2)
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* - shadow_diffs ratio per module from wp_wpdo_shadow_diffs (last 24h)
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*
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* Emits one of：
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* - PROMOTE — current state has cooked long enough + low divergence; safe to advance
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* - WAIT — needs more soak time, returns days remaining
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* - REVIEW — divergence too high; manual investigation needed before promoting
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* - ROLLBACK — error budget exceeded; suggest rewind to idle
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* - HOLD — module already idle or complete; nothing to do
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*
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* Designed to be advice — never auto-acts. Surfaces in Migration tab as a
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* panel beside each module row.
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*
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* @package WP_Data_Optimizer
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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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* FSM advisor — stateless static API with structured `advise()` return.
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*/
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class TMDO_FSM_Advisor {
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/** Minimum soak days per state before advisor allows promotion. */
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public const MIN_SOAK_DAYS = array(
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'idle' => 0,
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'dual_write' => 1,
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'backfill' => 1,
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'verify' => 7,
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'cutover' => 1,
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'cleanup' => 3,
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'complete' => 0, // terminal — never promote.
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);
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/** Max divergence ratio in `verify` state before advisor refuses to promote. */
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public const VERIFY_MAX_DIVERGENCE_RATIO = 0.001; // 0.1%
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/**
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* Build advice for a single module.
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*
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* @param string $module Module slug.
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* @return array {action:string, next_state?:string, days_remaining?:int,
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* reason:string, level:'info'|'warn'|'critical', metrics:array}
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*/
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public static function advise( string $module ): array {
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if ( ! class_exists( 'TMDO_Feature_Flags' ) ) {
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return self::stub( 'unavailable', 'Feature_Flags 未載入' );
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}
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$state = TMDO_Feature_Flags::get( $module );
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// Terminal cases.
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if ( 'idle' === $state ) {
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return array(
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'action' => 'HOLD',
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'level' => 'info',
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'reason' => __( 'Module 處於 idle，無需建議。如要啟用請先讀 SOP。', '2meet-data-optimizer' ),
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'metrics' => array( 'state' => $state ),
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);
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}
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if ( 'complete' === $state ) {
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return array(
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'action' => 'HOLD',
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'level' => 'info',
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'reason' => __( 'Module 已 complete，反 EAV 完成。', '2meet-data-optimizer' ),
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'metrics' => array( 'state' => $state ),
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);
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}
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$days_in_state = self::days_in_state( $module );
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$min_soak = self::MIN_SOAK_DAYS[ $state ] ?? 1;
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$metrics = array(
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'state' => $state,
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'days_in_state' => $days_in_state,
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'min_soak_days' => $min_soak,
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);
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// Verify state requires divergence ratio check.
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if ( 'verify' === $state ) {
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$div = self::shadow_diff_ratio( $module );
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$metrics['shadow_diff_ratio_24h'] = $div['ratio'];
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$metrics['shadow_diff_count_24h'] = $div['count'];
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$metrics['shadow_diff_total_24h'] = $div['total'];
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if ( $div['count'] > 0 && $div['ratio'] > self::VERIFY_MAX_DIVERGENCE_RATIO ) {
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return array(
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'action' => 'REVIEW',
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'next_state' => null,
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'level' => 'warn',
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'reason' => sprintf(
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/* translators: 1: ratio, 2: max allowed */
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__( 'Verify 期間 shadow_diffs 比率 %1$.2f%% 超過上限 %2$.2f%%；建議手動 review wp_wpdo_shadow_diffs 確認分歧來源後再決定。', '2meet-data-optimizer' ),
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$div['ratio'] * 100,
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self::VERIFY_MAX_DIVERGENCE_RATIO * 100
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),
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'metrics' => $metrics,
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);
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}
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}
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// Soak time check.
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if ( null !== $days_in_state && $days_in_state < $min_soak ) {
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$days_remaining = $min_soak - $days_in_state;
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return array(
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'action' => 'WAIT',
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'days_remaining' => $days_remaining,
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'level' => 'info',
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'reason' => sprintf(
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/* translators: 1: days left, 2: state name, 3: min days */
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__( '再等 %1$d 天即可推進。當前 %2$s 狀態需 ≥ %3$d 天 soak。', '2meet-data-optimizer' ),
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$days_remaining,
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$state,
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$min_soak
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),
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'metrics' => $metrics,
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);
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}
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// Promotion candidate.
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$next = self::next_state( $state );
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if ( null === $next ) {
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return array(
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'action' => 'HOLD',
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'level' => 'info',
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'reason' => __( '當前狀態為 terminal — 無下一步建議。', '2meet-data-optimizer' ),
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'metrics' => $metrics,
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);
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}
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return array(
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'action' => 'PROMOTE',
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'next_state' => $next,
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'level' => 'info',
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'reason' => sprintf(
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/* translators: 1: from, 2: to, 3: days */
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__( '可推進：%1$s → %2$s（已 soak %3$d 天）。', '2meet-data-optimizer' ),
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$state,
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$next,
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$days_in_state
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),
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'metrics' => $metrics,
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);
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}
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/**
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* Build advice for every known module. Returns map module → advice.
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*
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* @return array<string,array>
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*/
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public static function advise_all(): array {
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if ( ! class_exists( 'TMDO_Feature_Flags' ) ) {
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return array();
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}
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$out = array();
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foreach ( TMDO_Feature_Flags::all() as $module => $_state ) {
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$out[ $module ] = self::advise( $module );
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}
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return $out;
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}
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// ─── private ──────────────────────────────────────────────────────
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/**
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* Return days since the module entered its current state.
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*
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* @param string $module Module slug.
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* @return int|null Days since entering current state, or null if unknown.
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*/
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private static function days_in_state( string $module ): ?int {
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$entered = (array) get_option( 'wpdo_fsm_state_entered', array() );
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if ( ! isset( $entered[ $module ]['entered_at'] ) ) {
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return null;
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}
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$ts = strtotime( (string) $entered[ $module ]['entered_at'] . ' UTC' );
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if ( false === $ts || $ts <= 0 ) {
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return null;
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}
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return (int) floor( ( time() - $ts ) / DAY_IN_SECONDS );
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}
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/**
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* Return the shadow-diff divergence ratio for a module over the last 24 hours.
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*
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* @param string $module Module slug.
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* @return array {ratio:float, count:int, total:int}
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*/
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private static function shadow_diff_ratio( string $module ): array { // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter.Found -- $module reserved for per-module entity_type routing (future)
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global $wpdb;
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$out = array(
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'ratio' => 0.0,
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'count' => 0,
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'total' => 0,
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);
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$table = $wpdb->prefix . 'wpdo_shadow_diffs';
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$exists = (int) $wpdb->get_var(
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$wpdb->prepare( // phpcs:ignore WordPress.DB
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'SELECT COUNT(*) FROM information_schema.TABLES WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = %s',
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$table
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)
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);
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if ( 0 === $exists ) {
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return $out;
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}
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// Module → entity_type mapping is loose — most HPCT modules map to 'post'.
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// Use entity_type='post' as default proxy; downstream `level=warn` is
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// honest about uncertainty.
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$count = (int) $wpdb->get_var(
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$wpdb->prepare(
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"SELECT COUNT(*) FROM `{$table}` WHERE entity_type = %s AND ts >= DATE_SUB(UTC_TIMESTAMP(), INTERVAL 24 HOUR)", // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- {$table} is $wpdb->prefix . 'wpdo_shadow_diffs' (no user input)
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'post'
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)
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);
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$total = (int) $wpdb->get_var( // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- no variables; table name is a WP core property
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"SELECT COUNT(*) FROM `{$wpdb->postmeta}` WHERE meta_id > 0"
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);
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$out['count'] = $count;
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$out['total'] = max( 1, $total );
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$out['ratio'] = $count / $out['total'];
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return $out;
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}
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/**
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* Forward graph (mirrors TMDO_FSM_Guard::FORWARD_GRAPH but without the
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* cycle check — advisor only suggests the canonical next step).
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*
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* @param string $state Current state.
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* @return string|null Next state, or null when terminal.
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*/
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private static function next_state( string $state ): ?string {
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$map = array(
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'idle' => 'dual_write',
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'dual_write' => 'backfill',
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'backfill' => 'verify',
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'verify' => 'cutover',
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'cutover' => 'cleanup',
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'cleanup' => 'complete',
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'complete' => null,
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);
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return $map[ $state ] ?? null;
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}
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/**
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* Stub advice when prerequisites are missing.
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*
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* @param string $action Reason code.
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* @param string $reason Human reason.
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* @return array
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*/
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private static function stub( string $action, string $reason ): array {
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return array(
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'action' => strtoupper( $action ),
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'level' => 'info',
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'reason' => $reason,
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'metrics' => array(),
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);
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}
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}
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