Agregar plugin WP Debug para diagnóstico sistemático
This commit is contained in:
FrankZamora
266
wp-content/plugins/wp-debug/inc/query-analyzer.php
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266
wp-content/plugins/wp-debug/inc/query-analyzer.php
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<?php
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/**
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* Query Analyzer Module
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*
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* Analiza queries SQL, detecta N+1 queries y queries lentas
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*
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* @package WP_Debug
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* @since 1.0.0
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*/
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// Exit if accessed directly
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if (!defined('ABSPATH')) {
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exit;
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}
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/**
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* WP_Debug_Query_Analyzer class
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*/
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class WP_Debug_Query_Analyzer {
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/**
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* Queries executed
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*
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* @var array
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*/
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private static $queries_executed = array();
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/**
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* Query patterns
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*
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* @var array
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*/
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private static $query_patterns = array();
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/**
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* Initialize query analyzer
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*/
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public static function init() {
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// Enable query saving
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if (!defined('SAVEQUERIES')) {
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define('SAVEQUERIES', true);
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}
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// Track queries on shutdown
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add_action('shutdown', array(__CLASS__, 'analyze_queries'), 999);
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}
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/**
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* Analyze queries
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*/
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public static function analyze_queries() {
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global $wpdb;
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if (empty($wpdb->queries)) {
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return;
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}
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// Process each query
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foreach ($wpdb->queries as $query) {
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list($sql, $elapsed, $caller) = $query;
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$query_info = array(
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'sql' => $sql,
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'elapsed' => $elapsed,
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'caller' => $caller,
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'timestamp' => microtime(true),
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);
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self::$queries_executed[] = $query_info;
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// Group by pattern
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$normalized = self::normalize_query($sql);
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if (!isset(self::$query_patterns[$normalized])) {
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self::$query_patterns[$normalized] = array(
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'count' => 0,
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'total_time' => 0,
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'queries' => array(),
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);
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}
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self::$query_patterns[$normalized]['count']++;
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self::$query_patterns[$normalized]['total_time'] += floatval($elapsed);
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self::$query_patterns[$normalized]['queries'][] = $query_info;
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}
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// Log statistics
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$total_queries = count($wpdb->queries);
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$total_time = array_sum(array_column($wpdb->queries, 1));
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$slow_queries = self::get_slow_queries();
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$n_plus_one = self::detect_n_plus_one();
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if (class_exists('WP_Debug_Logger')) {
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WP_Debug_Logger::info('Query Analysis Complete', array(
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'total_queries' => $total_queries,
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'total_time' => round($total_time, 4) . 's',
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'slow_queries' => count($slow_queries),
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'n_plus_one_patterns' => count($n_plus_one),
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));
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// Log slow queries
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foreach ($slow_queries as $query) {
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WP_Debug_Logger::warning('Slow Query Detected', array(
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'elapsed' => round($query['elapsed'], 4) . 's',
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'sql' => substr($query['sql'], 0, 200),
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'caller' => $query['caller'],
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));
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}
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// Log N+1 patterns
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foreach ($n_plus_one as $pattern) {
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WP_Debug_Logger::warning('N+1 Query Pattern Detected', array(
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'count' => $pattern['count'],
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'total_time' => round($pattern['total_time'], 4) . 's',
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'example' => substr($pattern['example'], 0, 200),
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));
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}
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}
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// Store for frontend panel
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set_transient('wp_debug_queries_data', array(
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'total_queries' => $total_queries,
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'total_time' => $total_time,
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'queries' => self::$queries_executed,
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'slow_queries' => $slow_queries,
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'n_plus_one' => $n_plus_one,
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'patterns' => self::$query_patterns,
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), 3600);
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}
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/**
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* Normalize query for pattern detection
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*
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* @param string $query SQL query
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* @return string Normalized query
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*/
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private static function normalize_query($query) {
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// Remove numeric literals
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$query = preg_replace('/\b\d+\b/', '?', $query);
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// Remove string literals
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$query = preg_replace("/'[^']*'/", '?', $query);
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// Remove extra whitespace
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$query = preg_replace('/\s+/', ' ', $query);
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return trim($query);
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}
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/**
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* Detect N+1 query patterns
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*
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* @return array N+1 patterns
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*/
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public static function detect_n_plus_one() {
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$patterns = array();
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// Find patterns executed 5+ times
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foreach (self::$query_patterns as $normalized => $pattern) {
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if ($pattern['count'] >= 5) {
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$patterns[] = array(
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'count' => $pattern['count'],
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'total_time' => $pattern['total_time'],
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'avg_time' => $pattern['total_time'] / $pattern['count'],
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'example' => $pattern['queries'][0]['sql'],
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'normalized' => $normalized,
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);
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}
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}
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// Sort by count descending
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usort($patterns, function($a, $b) {
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return $b['count'] - $a['count'];
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});
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return $patterns;
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}
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/**
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* Get slow queries
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*
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* @param float $threshold Threshold in seconds
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* @return array Slow queries
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*/
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public static function get_slow_queries($threshold = 0.05) {
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return array_filter(self::$queries_executed, function($query) use ($threshold) {
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return floatval($query['elapsed']) > $threshold;
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});
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}
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/**
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* Get queries by caller
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*
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* @param string $caller Caller filter
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* @return array Queries
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*/
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public static function get_queries_by_caller($caller) {
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return array_filter(self::$queries_executed, function($query) use ($caller) {
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return strpos($query['caller'], $caller) !== false;
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});
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}
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/**
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* Get query statistics
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*
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* @return array Statistics
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*/
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public static function get_statistics() {
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global $wpdb;
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if (empty($wpdb->queries)) {
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return array(
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'error' => 'SAVEQUERIES not enabled or no queries executed',
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);
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}
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$total_queries = count($wpdb->queries);
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$total_time = array_sum(array_column($wpdb->queries, 1));
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$avg_time = $total_time / $total_queries;
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return array(
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'total_queries' => $total_queries,
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'total_time' => $total_time,
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'avg_time' => $avg_time,
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'slow_queries' => count(self::get_slow_queries()),
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'n_plus_one_patterns' => count(self::detect_n_plus_one()),
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'unique_patterns' => count(self::$query_patterns),
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);
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}
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/**
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* Get query report
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*
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* @return array Query report
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*/
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public static function get_query_report() {
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$stats = self::get_statistics();
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$slow_queries = self::get_slow_queries();
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$n_plus_one = self::detect_n_plus_one();
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$suggestions = array();
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// Suggestions based on analysis
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if (isset($stats['total_queries']) && $stats['total_queries'] > 100) {
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$suggestions[] = 'High number of queries detected (' . $stats['total_queries'] . '). Consider using object caching.';
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}
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if (isset($stats['total_time']) && $stats['total_time'] > 1) {
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$suggestions[] = 'Total query time exceeds 1 second. Optimize slow queries.';
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}
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if (!empty($n_plus_one)) {
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$suggestions[] = 'N+1 query patterns detected. Consider using WP_Query with proper parameters or caching.';
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}
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if (!empty($slow_queries)) {
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$suggestions[] = count($slow_queries) . ' slow queries detected. Add indexes or optimize WHERE clauses.';
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}
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return array(
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'statistics' => $stats,
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'slow_queries' => array_slice($slow_queries, 0, 10),
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'n_plus_one_patterns' => array_slice($n_plus_one, 0, 5),
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'suggestions' => $suggestions,
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);
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}
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}
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