Symfony Profiler

<?php
declare(strict_types=1);
/*
* This file is part of the Sonata Project package.
*
* (c) Thomas Rabaix <thomas.rabaix@sonata-project.org>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Sonata\BlockBundle\Templating\Helper;
use Doctrine\Common\Util\ClassUtils;
use Sonata\BlockBundle\Block\BlockContextManagerInterface;
use Sonata\BlockBundle\Block\BlockRendererInterface;
use Sonata\BlockBundle\Block\BlockServiceManagerInterface;
use Sonata\BlockBundle\Cache\HttpCacheHandlerInterface;
use Sonata\BlockBundle\Event\BlockEvent;
use Sonata\BlockBundle\Model\BlockInterface;
use Sonata\Cache\CacheAdapterInterface;
use Sonata\Cache\CacheManagerInterface;
use Symfony\Component\EventDispatcher\EventDispatcherInterface as EventDispatcherComponentInterface;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Stopwatch\Stopwatch;
use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
class BlockHelper
{
/**
* @var BlockServiceManagerInterface
*/
private $blockServiceManager;
/**
* @var CacheManagerInterface|null
*/
private $cacheManager;
/**
* @var array
*/
private $cacheBlocks;
/**
* @var BlockRendererInterface
*/
private $blockRenderer;
/**
* @var BlockContextManagerInterface
*/
private $blockContextManager;
/**
* @var HttpCacheHandlerInterface|null
*/
private $cacheHandler;
/**
* @var EventDispatcherInterface
*/
private $eventDispatcher;
/**
* This property is a state variable holdings all assets used by the block for the current PHP request
* It is used to correctly render the javascripts and stylesheets tags on the main layout.
*
* @var array
*/
private $assets;
/**
* @var array
*/
private $traces;
/**
* @var Stopwatch|null
*/
private $stopwatch;
public function __construct(
BlockServiceManagerInterface $blockServiceManager,
array $cacheBlocks,
BlockRendererInterface $blockRenderer,
BlockContextManagerInterface $blockContextManager,
EventDispatcherInterface $eventDispatcher,
?CacheManagerInterface $cacheManager = null,
?HttpCacheHandlerInterface $cacheHandler = null,
?Stopwatch $stopwatch = null
) {
$this->blockServiceManager = $blockServiceManager;
$this->cacheBlocks = $cacheBlocks;
$this->blockRenderer = $blockRenderer;
$this->eventDispatcher = $eventDispatcher;
$this->cacheManager = $cacheManager;
$this->blockContextManager = $blockContextManager;
$this->cacheHandler = $cacheHandler;
$this->stopwatch = $stopwatch;
$this->assets = [
'js' => [],
'css' => [],
];
$this->traces = [
'_events' => [],
];
}
/**
* @param string $media Unused, only kept to not break existing code
* @param string $basePath Base path to prepend to the stylesheet urls
*
* @return array|string
*/
public function includeJavascripts($media, $basePath = '')
{
$html = '';
foreach ($this->assets['js'] as $javascript) {
$html .= "\n".sprintf('<script src="%s%s" type="text/javascript"></script>', $basePath, $javascript);
}
return $html;
}
/**
* @param string $media The css media type to use: all|screen|...
* @param string $basePath Base path to prepend to the stylesheet urls
*
* @return array|string
*/
public function includeStylesheets($media, $basePath = '')
{
if (0 === \count($this->assets['css'])) {
return '';
}
$html = sprintf("<style type='text/css' media='%s'>", $media);
foreach ($this->assets['css'] as $stylesheet) {
$html .= "\n".sprintf('@import url(%s%s);', $basePath, $stylesheet);
}
$html .= "\n</style>";
return $html;
}
public function renderEvent(string $name, array $options = []): string
{
$eventName = sprintf('sonata.block.event.%s', $name);
/**
* @psalm-suppress TooManyArguments
*
* @todo remove annotation when Symfony 4.4.x support is dropped
*/
$event = $this->eventDispatcher->dispatch(new BlockEvent($options), $eventName);
\assert($event instanceof BlockEvent);
$content = '';
foreach ($event->getBlocks() as $block) {
$content .= $this->render($block);
}
if (null !== $this->stopwatch) {
$this->traces['_events'][uniqid('', true)] = [
'template_code' => $name,
'event_name' => $eventName,
'blocks' => $this->getEventBlocks($event),
'listeners' => $this->getEventListeners($eventName),
];
}
return $content;
}
/**
* Check if a given block type exists.
*
* @param string $type Block type to check for
*/
public function exists(string $type): bool
{
return $this->blockContextManager->exists($type);
}
/**
* @param mixed $block
*/
public function render($block, array $options = []): string
{
$blockContext = $this->blockContextManager->get($block, $options);
$stats = [];
if ($this->stopwatch) {
$stats = $this->startTracing($blockContext->getBlock());
}
$service = $this->blockServiceManager->get($blockContext->getBlock());
$useCache = $blockContext->getSetting('use_cache');
$cacheKeys = $response = false;
$cacheService = $useCache ? $this->getCacheService($blockContext->getBlock(), $stats) : false;
if ($cacheService) {
$cacheKeys = array_merge(
$service->getCacheKeys($blockContext->getBlock()),
$blockContext->getSetting('extra_cache_keys')
);
if ($this->stopwatch) {
$stats['cache']['keys'] = $cacheKeys;
}
// Please note, some cache handler will always return true (js for instance)
// This will allows to have a non cacheable block, but the global page can still be cached by
// a reverse proxy, as the generated page will never get the generated Response from the block.
if ($cacheService->has($cacheKeys)) {
$cacheElement = $cacheService->get($cacheKeys);
if ($this->stopwatch) {
$stats['cache']['from_cache'] = false;
}
if (!$cacheElement->isExpired() && $cacheElement->getData() instanceof Response) {
/* @var Response $response */
if ($this->stopwatch) {
$stats['cache']['from_cache'] = true;
}
$response = $cacheElement->getData();
}
}
}
if (!$response) {
$recorder = null;
if ($this->cacheManager) {
$recorder = $this->cacheManager->getRecorder();
$recorder->add($blockContext->getBlock());
$recorder->push();
}
$response = $this->blockRenderer->render($blockContext);
$contextualKeys = $recorder ? $recorder->pop() : [];
if ($this->stopwatch) {
$stats['cache']['contextual_keys'] = $contextualKeys;
}
if ($response->isCacheable() && $cacheKeys && $cacheService) {
$cacheService->set($cacheKeys, $response, (int) $response->getTtl(), $contextualKeys);
}
}
if ($this->stopwatch) {
// avoid \DateTime because of serialize/unserialize issue in PHP7.3 (https://bugs.php.net/bug.php?id=77302)
$stats['cache']['created_at'] = null === $response->getDate() ? null : $response->getDate()->getTimestamp();
$stats['cache']['ttl'] = $response->getTtl() ?: 0;
$stats['cache']['age'] = $response->getAge();
}
// update final ttl for the whole Response
if ($this->cacheHandler) {
$this->cacheHandler->updateMetadata($response, $blockContext);
}
if ($this->stopwatch) {
$this->stopTracing($blockContext->getBlock(), $stats);
}
return (string) $response->getContent();
}
/**
* Returns the rendering traces.
*/
public function getTraces(): array
{
return $this->traces;
}
private function stopTracing(BlockInterface $block, array $stats): void
{
$e = $this->traces[$block->getId()]->stop();
$this->traces[$block->getId()] = array_merge($stats, [
'duration' => $e->getDuration(),
'memory_end' => memory_get_usage(true),
'memory_peak' => memory_get_peak_usage(true),
]);
$this->traces[$block->getId()]['cache']['lifetime'] = $this->traces[$block->getId()]['cache']['age'] + $this->traces[$block->getId()]['cache']['ttl'];
}
private function getEventBlocks(BlockEvent $event): array
{
$results = [];
foreach ($event->getBlocks() as $block) {
$results[] = [$block->getId(), $block->getType()];
}
return $results;
}
private function getEventListeners(string $eventName): array
{
$results = [];
if (!$this->eventDispatcher instanceof EventDispatcherComponentInterface) {
return $results;
}
foreach ($this->eventDispatcher->getListeners($eventName) as $listener) {
if ($listener instanceof \Closure) {
$results[] = '{closure}()';
} elseif (\is_object($listener[0])) {
$results[] = \get_class($listener[0]);
} elseif (\is_string($listener[0])) {
$results[] = $listener[0];
} else {
$results[] = 'Unknown type!';
}
}
return $results;
}
private function getCacheService(BlockInterface $block, ?array &$stats = null): ?CacheAdapterInterface
{
if (!$this->cacheManager) {
return null;
}
// type by block class
$class = ClassUtils::getClass($block);
$cacheServiceId = $this->cacheBlocks['by_class'][$class] ?? null;
// type by block service
if (null === $cacheServiceId) {
$cacheServiceId = $this->cacheBlocks['by_type'][$block->getType()] ?? null;
}
if (null === $cacheServiceId) {
return null;
}
if ($this->stopwatch) {
$stats['cache']['handler'] = $cacheServiceId;
}
return $this->cacheManager->getCacheService((string) $cacheServiceId);
}
private function startTracing(BlockInterface $block): array
{
if (null !== $this->stopwatch) {
$this->traces[$block->getId()] = $this->stopwatch->start(
sprintf('%s (id: %s, type: %s)', $block->getName(), $block->getId(), $block->getType())
);
}
return [
'name' => $block->getName(),
'type' => $block->getType(),
'duration' => false,
'memory_start' => memory_get_usage(true),
'memory_end' => false,
'memory_peak' => false,
'cache' => [
'keys' => [],
'contextual_keys' => [],
'handler' => false,
'from_cache' => false,
'ttl' => 0,
'created_at' => false,
'lifetime' => 0,
'age' => 0,
],
'assets' => [
'js' => [],
'css' => [],
],
];
}
}

vendor/sonata-project/block-bundle/src/Templating/Helper/BlockHelper.php line 162