forked from symfony/symfony
/
ProfilerListener.php
127 lines (109 loc) · 4.02 KB
/
ProfilerListener.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpKernel\EventListener;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\RequestMatcherInterface;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
use Symfony\Component\HttpKernel\Event\PostResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\Profiler\Profiler;
/**
* ProfilerListener collects data for the current request by listening to the kernel events.
*
* @author Fabien Potencier <fabien@symfony.com>
*
* @final since Symfony 4.3
*/
class ProfilerListener implements EventSubscriberInterface
{
protected $profiler;
protected $matcher;
protected $onlyException;
protected $onlyMasterRequests;
protected $exception;
protected $profiles;
protected $requestStack;
protected $parents;
/**
* @param bool $onlyException True if the profiler only collects data when an exception occurs, false otherwise
* @param bool $onlyMasterRequests True if the profiler only collects data when the request is a master request, false otherwise
*/
public function __construct(Profiler $profiler, RequestStack $requestStack, RequestMatcherInterface $matcher = null, bool $onlyException = false, bool $onlyMasterRequests = false)
{
$this->profiler = $profiler;
$this->matcher = $matcher;
$this->onlyException = $onlyException;
$this->onlyMasterRequests = $onlyMasterRequests;
$this->profiles = new \SplObjectStorage();
$this->parents = new \SplObjectStorage();
$this->requestStack = $requestStack;
}
/**
* Handles the onKernelException event.
*/
public function onKernelException(GetResponseForExceptionEvent $event)
{
if ($this->onlyMasterRequests && !$event->isMasterRequest()) {
return;
}
$this->exception = $event->getThrowable();
}
/**
* Handles the onKernelResponse event.
*/
public function onKernelResponse(FilterResponseEvent $event)
{
$master = $event->isMasterRequest();
if ($this->onlyMasterRequests && !$master) {
return;
}
if ($this->onlyException && null === $this->exception) {
return;
}
$request = $event->getRequest();
$exception = $this->exception;
$this->exception = null;
if (null !== $this->matcher && !$this->matcher->matches($request)) {
return;
}
if (!$profile = $this->profiler->collect($request, $event->getResponse(), $exception)) {
return;
}
$this->profiles[$request] = $profile;
$this->parents[$request] = $this->requestStack->getParentRequest();
}
public function onKernelTerminate(PostResponseEvent $event)
{
// attach children to parents
foreach ($this->profiles as $request) {
if (null !== $parentRequest = $this->parents[$request]) {
if (isset($this->profiles[$parentRequest])) {
$this->profiles[$parentRequest]->addChild($this->profiles[$request]);
}
}
}
// save profiles
foreach ($this->profiles as $request) {
$this->profiler->saveProfile($this->profiles[$request]);
}
$this->profiles = new \SplObjectStorage();
$this->parents = new \SplObjectStorage();
}
public static function getSubscribedEvents()
{
return [
KernelEvents::RESPONSE => ['onKernelResponse', -100],
KernelEvents::EXCEPTION => ['onKernelException', 0],
KernelEvents::TERMINATE => ['onKernelTerminate', -1024],
];
}
}