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Commitfe86efd

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feature#10200 [EventDispatcher] simplified code for TraceableEventDispatcher (fabpot)
This PR was merged into the 2.5-dev branch.Discussion----------[EventDispatcher] simplified code for TraceableEventDispatcher| Q | A| ------------- | ---| Bug fix? | no| New feature? | no| BC breaks? | no| Deprecations? | no| Tests pass? | yes| Fixed tickets | n/a| License | MIT| Doc PR | n/aCommits-------42e4c7b [EventDispatcher] simplified code for TraceableEventDispatcher
2 parents6dfdb97 +42e4c7b commitfe86efd

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3 files changed

+146
-147
lines changed

3 files changed

+146
-147
lines changed

‎src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php‎

Lines changed: 77 additions & 143 deletions
Original file line numberDiff line numberDiff line change
@@ -28,11 +28,9 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
2828
{
2929
protected$logger;
3030
protected$stopwatch;
31-
private$called =array();
31+
32+
private$called;
3233
private$dispatcher;
33-
private$wrappedListeners =array();
34-
private$firstCalledEvent =array();
35-
private$lastEventId =0;
3634

3735
/**
3836
* Constructor.
@@ -46,6 +44,7 @@ public function __construct(EventDispatcherInterface $dispatcher, Stopwatch $sto
4644
$this->dispatcher =$dispatcher;
4745
$this->stopwatch =$stopwatch;
4846
$this->logger =$logger;
47+
$this->called =array();
4948
}
5049

5150
/**
@@ -105,47 +104,19 @@ public function dispatch($eventName, Event $event = null)
105104
$event =newEvent();
106105
}
107106

108-
$eventId = ++$this->lastEventId;
109-
110-
// Wrap all listeners before they are called
111-
$this->wrappedListeners[$eventId] =new \SplObjectStorage();
112-
113-
$listeners =$this->dispatcher->getListeners($eventName);
114-
115-
foreach ($listenersas$listener) {
116-
$this->dispatcher->removeListener($eventName,$listener);
117-
$wrapped =$this->wrapListener($eventName,$eventId,$listener);
118-
$this->wrappedListeners[$eventId][$wrapped] =$listener;
119-
$this->dispatcher->addListener($eventName,$wrapped);
120-
}
121-
107+
$this->preProcess($eventName);
122108
$this->preDispatch($eventName,$event);
123109

124110
$e =$this->stopwatch->start($eventName,'section');
125111

126-
$this->firstCalledEvent[$eventName] =$this->stopwatch->start($eventName.'.loading','event_listener_loading');
127-
128-
if (!$this->dispatcher->hasListeners($eventName)) {
129-
$this->firstCalledEvent[$eventName]->stop();
130-
}
131-
132112
$this->dispatcher->dispatch($eventName,$event);
133113

134-
unset($this->firstCalledEvent[$eventName]);
135-
136114
if ($e->isStarted()) {
137115
$e->stop();
138116
}
139117

140118
$this->postDispatch($eventName,$event);
141-
142-
// Unwrap all listeners after they are called
143-
foreach ($this->wrappedListeners[$eventId]as$wrapped) {
144-
$this->dispatcher->removeListener($eventName,$wrapped);
145-
$this->dispatcher->addListener($eventName,$this->wrappedListeners[$eventId][$wrapped]);
146-
}
147-
148-
unset($this->wrappedListeners[$eventId]);
119+
$this->postProcess($eventName);
149120

150121
return$event;
151122
}
@@ -155,7 +126,15 @@ public function dispatch($eventName, Event $event = null)
155126
*/
156127
publicfunctiongetCalledListeners()
157128
{
158-
return$this->called;
129+
$called =array();
130+
foreach ($this->calledas$eventName =>$listeners) {
131+
foreach ($listenersas$listener) {
132+
$info =$this->getListenerInfo($listener->getWrappedListener(),$eventName);
133+
$called[$eventName.'.'.$info['pretty']] =$info;
134+
}
135+
}
136+
137+
return$called;
159138
}
160139

161140
/**
@@ -164,12 +143,22 @@ public function getCalledListeners()
164143
publicfunctiongetNotCalledListeners()
165144
{
166145
$notCalled =array();
167-
168-
foreach ($this->getListeners()as$name =>$listeners) {
146+
foreach ($this->getListeners()as$eventName =>$listeners) {
169147
foreach ($listenersas$listener) {
170-
$info =$this->getListenerInfo($listener,$name,null);
171-
if (!isset($this->called[$name.'.'.$info['pretty']])) {
172-
$notCalled[$name.'.'.$info['pretty']] =$info;
148+
$called =false;
149+
if (isset($this->called[$eventName])) {
150+
foreach ($this->called[$eventName]as$l) {
151+
if ($l->getWrappedListener() ===$listener) {
152+
$called =true;
153+
154+
break;
155+
}
156+
}
157+
}
158+
159+
if (!$called) {
160+
$info =$this->getListenerInfo($listener,$eventName);
161+
$notCalled[$eventName.'.'.$info['pretty']] =$info;
173162
}
174163
}
175164
}
@@ -191,64 +180,68 @@ public function __call($method, $arguments)
191180
}
192181

193182
/**
194-
*This is a private method and must not be used.
183+
*Called before dispatching the event.
195184
*
196-
* This method is public because it is used in a closure.
197-
* Whenever Symfony will require PHP 5.4, this could be changed
198-
* to a proper private method.
185+
* @param string $eventName The event name
186+
* @param Event $event The event
199187
*/
200-
publicfunctionlogSkippedListeners($eventName,$eventId,Event$event,$listener)
188+
protectedfunctionpreDispatch($eventName,Event$event)
201189
{
202-
if (null ===$this->logger) {
203-
return;
204-
}
205-
206-
$info =$this->getListenerInfo($listener,$eventName,$eventId);
207-
208-
$this->logger->debug(sprintf('Listener "%s" stopped propagation of the event "%s".',$info['pretty'],$eventName));
209-
210-
$skippedListeners =$this->getListeners($eventName);
211-
$skipped =false;
212-
213-
foreach ($skippedListenersas$skippedListener) {
214-
$skippedListener =$this->unwrapListener($skippedListener,$eventId);
215-
216-
if ($skipped) {
217-
$info =$this->getListenerInfo($skippedListener,$eventName,$eventId);
218-
$this->logger->debug(sprintf('Listener "%s" was not called for event "%s".',$info['pretty'],$eventName));
219-
}
220-
221-
if ($skippedListener ===$listener) {
222-
$skipped =true;
223-
}
224-
}
225190
}
226191

227192
/**
228-
*This is a private method.
193+
*Called after dispatching the event.
229194
*
230-
* This method is public because it is used in a closure.
231-
* Whenever Symfony will require PHP 5.4, this could be changed
232-
* to a proper private method.
195+
* @param string $eventName The event name
196+
* @param Event $event The event
233197
*/
234-
publicfunctionpreListenerCall($eventName,$eventId,$listener)
198+
protectedfunctionpostDispatch($eventName,Event$event)
235199
{
236-
// is it the first called listener?
237-
if (isset($this->firstCalledEvent[$eventName])) {
238-
$this->firstCalledEvent[$eventName]->stop();
200+
}
239201

240-
unset($this->firstCalledEvent[$eventName]);
202+
privatefunctionpreProcess($eventName)
203+
{
204+
foreach ($this->dispatcher->getListeners($eventName)as$listener) {
205+
$this->dispatcher->removeListener($eventName,$listener);
206+
$info =$this->getListenerInfo($listener,$eventName);
207+
$name =isset($info['class']) ?$info['class'] :$info['type'];
208+
$this->dispatcher->addListener($eventName,newWrappedListener($listener,$name,$this->stopwatch));
241209
}
210+
}
242211

243-
$info =$this->getListenerInfo($listener,$eventName,$eventId);
212+
privatefunctionpostProcess($eventName)
213+
{
214+
$skipped =false;
215+
foreach ($this->dispatcher->getListeners($eventName)as$listener) {
216+
// Unwrap listener
217+
$this->dispatcher->removeListener($eventName,$listener);
218+
$this->dispatcher->addListener($eventName,$listener->getWrappedListener());
244219

245-
if (null !==$this->logger) {
246-
$this->logger->debug(sprintf('Notified event "%s" to listener "%s".',$eventName,$info['pretty']));
247-
}
220+
$info =$this->getListenerInfo($listener->getWrappedListener(),$eventName);
221+
if ($listener->wasCalled()) {
222+
if (null !==$this->logger) {
223+
$this->logger->debug(sprintf('Notified event "%s" to listener "%s".',$eventName,$info['pretty']));
224+
}
225+
226+
if (!isset($this->called[$eventName])) {
227+
$this->called[$eventName] =new \SplObjectStorage();
228+
}
248229

249-
$this->called[$eventName.'.'.$info['pretty']] =$info;
230+
$this->called[$eventName]->attach($listener);
231+
}
232+
233+
if (null !==$this->logger &&$skipped) {
234+
$this->logger->debug(sprintf('Listener "%s" was not called for event "%s".',$info['pretty'],$eventName));
235+
}
250236

251-
return$this->stopwatch->start(isset($info['class']) ?$info['class'] :$info['type'],'event_listener');
237+
if ($listener->stoppedPropagation()) {
238+
if (null !==$this->logger) {
239+
$this->logger->debug(sprintf('Listener "%s" stopped propagation of the event "%s".',$info['pretty'],$eventName));
240+
}
241+
242+
$skipped =true;
243+
}
244+
}
252245
}
253246

254247
/**
@@ -259,10 +252,8 @@ public function preListenerCall($eventName, $eventId, $listener)
259252
*
260253
* @return array Information about the listener
261254
*/
262-
privatefunctiongetListenerInfo($listener,$eventName,$eventId)
255+
privatefunctiongetListenerInfo($listener,$eventName)
263256
{
264-
$listener =$this->unwrapListener($listener,$eventId);
265-
266257
$info =array(
267258
'event' =>$eventName,
268259
);
@@ -312,61 +303,4 @@ private function getListenerInfo($listener, $eventName, $eventId)
312303

313304
return$info;
314305
}
315-
316-
/**
317-
* Called before dispatching the event.
318-
*
319-
* @param string $eventName The event name
320-
* @param Event $event The event
321-
*/
322-
protectedfunctionpreDispatch($eventName,Event$event)
323-
{
324-
}
325-
326-
/**
327-
* Called after dispatching the event.
328-
*
329-
* @param string $eventName The event name
330-
* @param Event $event The event
331-
*/
332-
protectedfunctionpostDispatch($eventName,Event$event)
333-
{
334-
}
335-
336-
privatefunctionwrapListener($eventName,$eventId,$listener)
337-
{
338-
$self =$this;
339-
340-
returnfunction (Event$event)use ($self,$eventName,$eventId,$listener) {
341-
$e =$self->preListenerCall($eventName,$eventId,$listener);
342-
343-
call_user_func($listener,$event,$eventName,$self);
344-
345-
if ($e->isStarted()) {
346-
$e->stop();
347-
}
348-
349-
if ($event->isPropagationStopped()) {
350-
$self->logSkippedListeners($eventName,$eventId,$event,$listener);
351-
}
352-
};
353-
}
354-
355-
privatefunctionunwrapListener($listener,$eventId)
356-
{
357-
// get the original listener
358-
if (is_object($listener)) {
359-
if (null ===$eventId) {
360-
foreach (array_keys($this->wrappedListeners)as$eventId) {
361-
if (isset($this->wrappedListeners[$eventId][$listener])) {
362-
return$this->wrappedListeners[$eventId][$listener];
363-
}
364-
}
365-
}elseif (isset($this->wrappedListeners[$eventId][$listener])) {
366-
return$this->wrappedListeners[$eventId][$listener];
367-
}
368-
}
369-
370-
return$listener;
371-
}
372306
}
Lines changed: 69 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,69 @@
1+
<?php
2+
3+
/*
4+
* This file is part of the Symfony package.
5+
*
6+
* (c) Fabien Potencier <fabien@symfony.com>
7+
*
8+
* For the full copyright and license information, please view the LICENSE
9+
* file that was distributed with this source code.
10+
*/
11+
12+
namespaceSymfony\Component\EventDispatcher\Debug;
13+
14+
useSymfony\Component\Stopwatch\Stopwatch;
15+
useSymfony\Component\EventDispatcher\Event;
16+
useSymfony\Component\EventDispatcher\EventDispatcherInterface;
17+
18+
/**
19+
* @author Fabien Potencier <fabien@symfony.com>
20+
*/
21+
class WrappedListener
22+
{
23+
private$listener;
24+
private$name;
25+
private$called;
26+
private$stoppedPropagation;
27+
private$stopwatch;
28+
29+
publicfunction__construct($listener,$name,Stopwatch$stopwatch)
30+
{
31+
$this->listener =$listener;
32+
$this->name =$name;
33+
$this->stopwatch =$stopwatch;
34+
$this->called =false;
35+
$this->stoppedPropagation =false;
36+
}
37+
38+
publicfunctiongetWrappedListener()
39+
{
40+
return$this->listener;
41+
}
42+
43+
publicfunctionwasCalled()
44+
{
45+
return$this->called;
46+
}
47+
48+
publicfunctionstoppedPropagation()
49+
{
50+
return$this->stoppedPropagation;
51+
}
52+
53+
publicfunction__invoke(Event$event,$eventName,EventDispatcherInterface$dispatcher)
54+
{
55+
$this->called =true;
56+
57+
$e =$this->stopwatch->start($this->name,'event_listener');
58+
59+
call_user_func($this->listener,$event,$eventName,$dispatcher);
60+
61+
if ($e->isStarted()) {
62+
$e->stop();
63+
}
64+
65+
if ($event->isPropagationStopped()) {
66+
$this->stoppedPropagation =true;
67+
}
68+
}
69+
}

‎src/Symfony/Component/HttpKernel/Tests/Debug/TraceableEventDispatcherTest.php‎

Lines changed: 0 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -32,14 +32,10 @@ public function testStopwatchSections()
3232
$this->assertEquals(array(
3333
'__section__',
3434
'kernel.request',
35-
'kernel.request.loading',
3635
'kernel.controller',
37-
'kernel.controller.loading',
3836
'controller',
3937
'kernel.response',
40-
'kernel.response.loading',
4138
'kernel.terminate',
42-
'kernel.terminate.loading',
4339
),array_keys($events));
4440
}
4541

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