e662614f95
Implicitly marking parameter $... as nullable is deprecated in php8.4, the explicit nullable type must be used instead Created with autofix from Ide15839e98a6229c22584d1c1c88c690982e1d7a Break one long line in SpecialPage.php Bug: T376276 Change-Id: I807257b2ba1ab2744ab74d9572c9c3d3ac2a968e
323 lines
8.5 KiB
PHP
323 lines
8.5 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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use MediaWiki\Logger\LoggerFactory;
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use MediaWiki\WikiMap\WikiMap;
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use Psr\Log\LoggerInterface;
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use Wikimedia\Rdbms\TransactionProfiler;
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use Wikimedia\ScopedCallback;
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/**
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* @defgroup Profiler Profiler
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*/
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/**
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* Profiler base class that defines the interface and some shared
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* functionality.
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*
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* @ingroup Profiler
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*/
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abstract class Profiler {
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/** @var string|false Profiler ID for bucketing data */
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protected $profileID = false;
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/** @var array All of the params passed from $wgProfiler */
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protected $params = [];
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/** @var TransactionProfiler */
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protected $trxProfiler;
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/** @var LoggerInterface */
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protected $logger;
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/** @var bool */
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private $allowOutput = false;
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/** @var Profiler */
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private static $instance = null;
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/**
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* @param array $params See $wgProfiler.
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*/
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public function __construct( array $params ) {
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if ( isset( $params['profileID'] ) ) {
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$this->profileID = $params['profileID'];
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}
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$this->params = $params;
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$this->trxProfiler = new TransactionProfiler();
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$this->logger = LoggerFactory::getInstance( 'profiler' );
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}
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/**
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* @internal For use by Setup.php
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* @param array $profilerConf Value from $wgProfiler
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*/
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final public static function init( array $profilerConf ): void {
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$params = $profilerConf + [
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'class' => ProfilerStub::class,
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'sampling' => 1,
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'threshold' => 0.0,
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'output' => [],
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'cliEnable' => false,
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];
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// Avoid global func wfIsCLI() during setup
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$isCLI = ( PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg' );
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$inSample = $params['sampling'] === 1 || mt_rand( 1, $params['sampling'] ) === 1;
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if (
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!$inSample ||
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// On CLI, profiling is disabled by default, and can be explicitly enabled
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// via the `--profiler` option, which MediaWiki\Maintenance\MaintenanceRunner::setup
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// translates into 'cliEnable'.
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// See also $wgProfiler docs.
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//
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// For this to work, Setup.php must call Profiler::init() after handling of
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// MW_FINAL_SETUP_CALLBACK, which is what doMaintenance.php uses to call
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// MaintenanceRunner::setup.
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( $isCLI && !$params['cliEnable'] )
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) {
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$params['class'] = ProfilerStub::class;
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}
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if ( !is_array( $params['output'] ) ) {
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$params['output'] = [ $params['output'] ];
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}
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self::$instance = new $params['class']( $params );
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}
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/**
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* @return Profiler
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*/
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final public static function instance() {
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if ( !self::$instance ) {
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trigger_error( 'Called Profiler::instance before settings are loaded', E_USER_WARNING );
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self::init( [] );
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}
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return self::$instance;
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}
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/**
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* @deprecated since 1.41, unused. Can override this base class.
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* @param string $id
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*/
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public function setProfileID( $id ) {
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wfDeprecated( __METHOD__, '1.41' );
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$this->profileID = $id;
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}
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/**
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* @return string
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*/
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public function getProfileID() {
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if ( $this->profileID === false ) {
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return WikiMap::getCurrentWikiDbDomain()->getId();
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} else {
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return $this->profileID;
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}
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}
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/**
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* Mark the start of a custom profiling frame (e.g. DB queries).
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* The frame ends when the result of this method falls out of scope.
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*
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* @param string $section
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* @return ScopedCallback|null
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* @since 1.25
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*/
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abstract public function scopedProfileIn( $section );
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/**
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* @param SectionProfileCallback|null &$section
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*/
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public function scopedProfileOut( ?SectionProfileCallback &$section = null ) {
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$section = null;
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}
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/**
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* @return TransactionProfiler
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* @since 1.25
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*/
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public function getTransactionProfiler() {
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return $this->trxProfiler;
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}
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/**
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* Close opened profiling sections
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*/
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abstract public function close();
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/**
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* Get all usable outputs.
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*
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* @return ProfilerOutput[]
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* @since 1.25
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*/
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private function getOutputs() {
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$outputs = [];
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foreach ( $this->params['output'] as $outputType ) {
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// The class may be specified as either the full class name (for
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// example, 'ProfilerOutputStats') or (for backward compatibility)
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// the trailing portion of the class name (for example, 'stats').
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$outputClass = strpos( $outputType, 'ProfilerOutput' ) === false
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? 'ProfilerOutput' . ucfirst( $outputType )
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: $outputType;
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if ( !class_exists( $outputClass ) ) {
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throw new UnexpectedValueException( "'$outputType' is an invalid output type" );
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}
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$outputInstance = new $outputClass( $this, $this->params );
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if ( $outputInstance->canUse() ) {
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$outputs[] = $outputInstance;
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}
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}
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return $outputs;
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}
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/**
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* Log data to all the applicable backing stores
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*
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* This logs the profiling data to the backing store for each configured ProfilerOutput
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* instance. It also logs any request data for the TransactionProfiler instance.
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*
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* @since 1.25
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*/
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public function logData() {
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if ( $this->params['threshold'] > 0.0 ) {
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// Note, this is also valid for CLI processes.
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$timeElapsed = microtime( true ) - $_SERVER['REQUEST_TIME_FLOAT'];
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if ( $timeElapsed <= $this->params['threshold'] ) {
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return;
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}
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}
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$outputs = [];
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foreach ( $this->getOutputs() as $output ) {
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if ( !$output->logsToOutput() ) {
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$outputs[] = $output;
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}
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}
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if ( $outputs ) {
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$stats = $this->getFunctionStats();
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foreach ( $outputs as $output ) {
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$output->log( $stats );
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}
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}
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}
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/**
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* Log the data to the script/request output for all ProfilerOutput instances that do so
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*
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* @since 1.26
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*/
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public function logDataPageOutputOnly() {
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if ( !$this->allowOutput ) {
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return;
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}
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$outputs = [];
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foreach ( $this->getOutputs() as $output ) {
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if ( $output->logsToOutput() ) {
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$outputs[] = $output;
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}
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}
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if ( $outputs ) {
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$stats = $this->getFunctionStats();
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foreach ( $outputs as $output ) {
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$output->log( $stats );
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}
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}
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}
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/**
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* Get the Content-Type for deciding how to format appended profile output.
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*
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* Disabled by default. Enable via setAllowOutput().
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*
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* @see ProfilerOutputText
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* @since 1.25
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* @return string|null Returns null if disabled or no Content-Type found.
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*/
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public function getContentType() {
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if ( $this->allowOutput ) {
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foreach ( headers_list() as $header ) {
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if ( preg_match( '#^content-type: (\w+/\w+);?#i', $header, $m ) ) {
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return $m[1];
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}
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}
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}
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return null;
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}
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/**
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* Enable appending profiles to standard output.
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*
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* @since 1.34
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*/
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public function setAllowOutput() {
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$this->allowOutput = true;
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}
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/**
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* Whether appending profiles is allowed.
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*
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* @deprecated since 1.41. Unused.
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*
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* @since 1.34
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* @return bool
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*/
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public function getAllowOutput() {
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wfDeprecated( __METHOD__, '1.41' );
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return $this->allowOutput;
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}
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/**
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* Get the aggregated inclusive profiling data for each method
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*
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* The percent time for each time is based on the current "total" time
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* used is based on all methods so far. This method can therefore be
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* called several times in between several profiling calls without the
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* delays in usage of the profiler skewing the results. A "-total" entry
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* is always included in the results.
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*
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* When a call chain involves a method invoked within itself, any
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* entries for the cyclic invocation should be demarked with "@".
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* This makes filtering them out easier and follows the xhprof style.
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*
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* @return array[] List of method entries arrays, each having:
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* - name : method name
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* - calls : the number of invoking calls
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* - real : real time elapsed (ms)
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* - %real : percent real time
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* - cpu : CPU time elapsed (ms)
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* - %cpu : percent CPU time
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* - memory : memory used (bytes)
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* - %memory : percent memory used
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* - min_real : min real time in a call (ms)
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* - max_real : max real time in a call (ms)
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* @since 1.25
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*/
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abstract public function getFunctionStats();
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/**
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* Returns a profiling output to be stored in debug file
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*
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* @return string
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*/
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abstract public function getOutput();
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}
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