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<?php
class Jetpack_Search_Performance_Logger {
/**
* @var Jetpack_Search_Performance_Logger
**/
private static $instance = null;
private $current_query = null;
private $query_started = null;
private $stats = null;
static function init() {
if ( is_null( self::$instance ) ) {
self::$instance = new Jetpack_Search_Performance_Logger;
}
return self::$instance;
}
private function __construct() {
$this->stats = array();
add_action( 'pre_get_posts', array( $this, 'begin_log_query' ), 10, 1 );
add_action( 'did_jetpack_search_query', array( $this, 'log_jetpack_search_query' ) );
add_filter( 'found_posts', array( $this, 'log_mysql_query' ), 10, 2 );
add_action( 'wp_footer', array( $this, 'print_stats' ) );
}
public function begin_log_query( $query ) {
if ( $this->should_log_query( $query ) ) {
$this->query_started = microtime( true );
$this->current_query = $query;
}
}
public function log_mysql_query( $found_posts, $query ) {
if ( $this->current_query === $query ) {
$duration = microtime( true ) - $this->query_started;
if ( $duration < 60 ) { // eliminate outliers, likely tracking errors
$this->record_query_time( $duration, false );
}
$this->reset_query_state();
}
return $found_posts;
}
public function log_jetpack_search_query() {
$duration = microtime( true ) - $this->query_started;
if ( $duration < 60 ) { // eliminate outliers, likely tracking errors
$this->record_query_time( $duration, true );
}
$this->reset_query_state();
}
private function reset_query_state() {
$this->query_started = null;
$this->current_query = null;
}
private function should_log_query( $query ) {
return $query->is_main_query() && $query->is_search();
}
private function record_query_time( $duration, $was_jetpack_search ) {
$this->stats[] = array( $was_jetpack_search, (int) ( $duration * 1000 ) );
}
public function print_stats() {
$beacons = array();
if ( ! empty( $this->stats ) ) {
foreach( $this->stats as $stat ) {
$search_type = $stat[0] ? 'es' : 'mysql';
$beacons[] = "%22jetpack.search.{$search_type}.duration:{$stat[1]}|ms%22";
}
$encoded_json = '{%22beacons%22:[' . implode(',', $beacons ) . ']}';
$encoded_site_url = urlencode( site_url() );
$url = "https://pixel.wp.com/boom.gif?v=0.9&u={$encoded_site_url}&json={$encoded_json}";
echo '<img src="' . esc_url( $url ) . '" width="1" height="1" style="display:none;" alt=""/>';
}
}
}
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GitWeb