[EventDispatcher] Split events across requests
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@ -28,6 +28,7 @@
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<service id="data_collector.events" class="Symfony\Component\HttpKernel\DataCollector\EventDataCollector">
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<tag name="data_collector" template="@WebProfiler/Collector/events.html.twig" id="events" priority="290" />
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<argument type="service" id="debug.event_dispatcher" on-invalid="ignore" />
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<argument type="service" id="request_stack" on-invalid="ignore" />
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</service>
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<service id="data_collector.logger" class="Symfony\Component\HttpKernel\DataCollector\LoggerDataCollector">
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@ -12,6 +12,7 @@
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<argument type="service" id="debug.event_dispatcher.inner" />
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<argument type="service" id="debug.stopwatch" />
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<argument type="service" id="logger" on-invalid="null" />
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<argument type="service" id="request_stack" on-invalid="null" />
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</service>
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<service id="debug.controller_resolver" decorates="controller_resolver" class="Symfony\Component\HttpKernel\Controller\TraceableControllerResolver">
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@ -13,10 +13,12 @@ namespace Symfony\Component\EventDispatcher\Debug;
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use Psr\EventDispatcher\StoppableEventInterface;
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use Psr\Log\LoggerInterface;
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use Symfony\Component\BrowserKit\Request;
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use Symfony\Component\EventDispatcher\Event;
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use Symfony\Component\EventDispatcher\EventDispatcherInterface;
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use Symfony\Component\EventDispatcher\EventSubscriberInterface;
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use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
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use Symfony\Component\HttpFoundation\RequestStack;
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use Symfony\Component\Stopwatch\Stopwatch;
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use Symfony\Contracts\EventDispatcher\Event as ContractsEvent;
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@ -36,14 +38,17 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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private $dispatcher;
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private $wrappedListeners;
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private $orphanedEvents;
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private $requestStack;
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private $currentRequestHash = '';
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public function __construct(EventDispatcherInterface $dispatcher, Stopwatch $stopwatch, LoggerInterface $logger = null)
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public function __construct(EventDispatcherInterface $dispatcher, Stopwatch $stopwatch, LoggerInterface $logger = null, RequestStack $requestStack = null)
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{
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$this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher);
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$this->stopwatch = $stopwatch;
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$this->logger = $logger;
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$this->wrappedListeners = [];
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$this->orphanedEvents = [];
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$this->requestStack = $requestStack;
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}
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/**
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@ -133,6 +138,7 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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$this->callStack = new \SplObjectStorage();
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}
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$currentRequestHash = $this->currentRequestHash = $this->requestStack && ($request = $this->requestStack->getCurrentRequest()) ? spl_object_hash($request) : '';
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$eventName = 1 < \func_num_args() ? \func_get_arg(1) : null;
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if (\is_object($event)) {
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@ -168,6 +174,7 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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$this->afterDispatch($eventName, $event);
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}
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} finally {
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$this->currentRequestHash = $currentRequestHash;
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$this->postProcess($eventName);
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}
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@ -176,18 +183,22 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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/**
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* {@inheritdoc}
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*
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* @param Request|null $request The request to get listeners for
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*/
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public function getCalledListeners()
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public function getCalledListeners(/* Request $request = null */)
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{
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if (null === $this->callStack) {
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return [];
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}
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$hash = 1 <= \func_num_args() && null !== ($request = \func_get_arg(0)) ? spl_object_hash($request) : null;
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$called = [];
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foreach ($this->callStack as $listener) {
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list($eventName) = $this->callStack->getInfo();
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$called[] = $listener->getInfo($eventName);
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list($eventName, $requestHash) = $this->callStack->getInfo();
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if (null === $hash || $hash === $requestHash) {
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$called[] = $listener->getInfo($eventName);
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}
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}
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return $called;
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@ -195,8 +206,10 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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/**
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* {@inheritdoc}
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*
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* @param Request|null $request The request to get listeners for
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*/
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public function getNotCalledListeners()
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public function getNotCalledListeners(/* Request $request = null */)
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{
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try {
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$allListeners = $this->getListeners();
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@ -209,13 +222,15 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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return [];
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}
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$hash = 1 <= \func_num_args() && null !== ($request = \func_get_arg(0)) ? spl_object_hash($request) : null;
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$notCalled = [];
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foreach ($allListeners as $eventName => $listeners) {
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foreach ($listeners as $listener) {
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$called = false;
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if (null !== $this->callStack) {
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foreach ($this->callStack as $calledListener) {
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if ($calledListener->getWrappedListener() === $listener) {
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list(, $requestHash) = $this->callStack->getInfo();
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if ((null === $hash || $hash === $requestHash) && $calledListener->getWrappedListener() === $listener) {
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$called = true;
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break;
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@ -237,15 +252,27 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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return $notCalled;
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}
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public function getOrphanedEvents(): array
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/**
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* @param Request|null $request The request to get orphaned events for
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*/
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public function getOrphanedEvents(/* Request $request = null */): array
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{
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return $this->orphanedEvents;
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if (1 <= \func_num_args() && null !== $request = \func_get_arg(0)) {
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return $this->orphanedEvents[spl_object_hash($request)] ?? [];
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}
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if (!$this->orphanedEvents) {
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return [];
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}
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return array_merge(...array_values($this->orphanedEvents));
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}
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public function reset()
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{
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$this->callStack = null;
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$this->orphanedEvents = [];
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$this->currentRequestHash = '';
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}
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/**
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@ -298,7 +325,7 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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private function preProcess($eventName)
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{
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if (!$this->dispatcher->hasListeners($eventName)) {
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$this->orphanedEvents[] = $eventName;
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$this->orphanedEvents[$this->currentRequestHash][] = $eventName;
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return;
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}
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@ -309,7 +336,7 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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$this->wrappedListeners[$eventName][] = $wrappedListener;
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$this->dispatcher->removeListener($eventName, $listener);
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$this->dispatcher->addListener($eventName, $wrappedListener, $priority);
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$this->callStack->attach($wrappedListener, [$eventName]);
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$this->callStack->attach($wrappedListener, [$eventName, $this->currentRequestHash]);
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}
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}
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@ -334,10 +361,6 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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if (null !== $this->logger) {
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$this->logger->debug('Notified event "{event}" to listener "{listener}".', $context);
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}
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if (!isset($this->called[$eventName])) {
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$this->called[$eventName] = new \SplObjectStorage();
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}
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} else {
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$this->callStack->detach($listener);
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}
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@ -12,6 +12,7 @@
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namespace Symfony\Component\EventDispatcher\Debug;
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use Symfony\Component\EventDispatcher\EventDispatcherInterface;
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use Symfony\Component\HttpFoundation\Request;
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use Symfony\Contracts\Service\ResetInterface;
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/**
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@ -24,14 +25,18 @@ interface TraceableEventDispatcherInterface extends EventDispatcherInterface, Re
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/**
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* Gets the called listeners.
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*
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* @param Request|null $request The request to get listeners for
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*
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* @return array An array of called listeners
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*/
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public function getCalledListeners();
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public function getCalledListeners(/* Request $request = null */);
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/**
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* Gets the not called listeners.
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*
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* @param Request|null $request The request to get listeners for
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*
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* @return array An array of not called listeners
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*/
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public function getNotCalledListeners();
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public function getNotCalledListeners(/* Request $request = null */);
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}
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@ -23,6 +23,7 @@
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"symfony/dependency-injection": "~3.4|~4.0",
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"symfony/expression-language": "~3.4|~4.0",
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"symfony/config": "~3.4|~4.0",
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"symfony/http-foundation": "^3.4|^4.0",
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"symfony/stopwatch": "~3.4|~4.0",
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"psr/log": "~1.0"
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},
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@ -14,6 +14,7 @@ namespace Symfony\Component\HttpKernel\DataCollector;
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use Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher;
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use Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcherInterface;
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use Symfony\Component\HttpFoundation\Request;
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use Symfony\Component\HttpFoundation\RequestStack;
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use Symfony\Component\HttpFoundation\Response;
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use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
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use Symfony\Contracts\Service\ResetInterface;
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@ -26,10 +27,13 @@ use Symfony\Contracts\Service\ResetInterface;
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class EventDataCollector extends DataCollector implements LateDataCollectorInterface
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{
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protected $dispatcher;
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private $requestStack;
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private $currentRequest;
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public function __construct(EventDispatcherInterface $dispatcher = null)
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public function __construct(EventDispatcherInterface $dispatcher = null, RequestStack $requestStack = null)
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{
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$this->dispatcher = $dispatcher;
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$this->requestStack = $requestStack;
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}
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/**
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@ -37,6 +41,7 @@ class EventDataCollector extends DataCollector implements LateDataCollectorInter
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*/
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public function collect(Request $request, Response $response, \Exception $exception = null)
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{
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$this->currentRequest = $this->requestStack && $this->requestStack->getMasterRequest() !== $request ? $request : null;
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$this->data = [
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'called_listeners' => [],
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'not_called_listeners' => [],
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@ -56,12 +61,12 @@ class EventDataCollector extends DataCollector implements LateDataCollectorInter
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public function lateCollect()
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{
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if ($this->dispatcher instanceof TraceableEventDispatcherInterface) {
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$this->setCalledListeners($this->dispatcher->getCalledListeners());
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$this->setNotCalledListeners($this->dispatcher->getNotCalledListeners());
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$this->setCalledListeners($this->dispatcher->getCalledListeners($this->currentRequest));
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$this->setNotCalledListeners($this->dispatcher->getNotCalledListeners($this->currentRequest));
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}
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if ($this->dispatcher instanceof TraceableEventDispatcher) {
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$this->setOrphanedEvents($this->dispatcher->getOrphanedEvents());
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$this->setOrphanedEvents($this->dispatcher->getOrphanedEvents($this->currentRequest));
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}
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$this->data = $this->cloneVar($this->data);
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