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<?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\Profiler;
use Symfony\Component\HttpFoundation\Exception\ConflictingHeadersException;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\DataCollector\DataCollectorInterface;
use Symfony\Component\HttpKernel\DataCollector\LateDataCollectorInterface;
use Psr\Log\LoggerInterface;
/**
* Profiler.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Profiler
{
private $storage;
/**
* @var DataCollectorInterface[]
*/
private $collectors = array();
private $logger;
/**
* @var bool
*/
private $enabled = true;
public function __construct(ProfilerStorageInterface $storage, LoggerInterface $logger = null)
{
$this->storage = $storage;
$this->logger = $logger;
}
/**
* Disables the profiler.
*/
public function disable()
{
$this->enabled = false;
}
/**
* Enables the profiler.
*/
public function enable()
{
$this->enabled = true;
}
/**
* Loads the Profile for the given Response.
*
* @return Profile|false A Profile instance
*/
public function loadProfileFromResponse(Response $response)
{
if (!$token = $response->headers->get('X-Debug-Token')) {
return false;
}
return $this->loadProfile($token);
}
/**
* Loads the Profile for the given token.
*
* @param string $token A token
*
* @return Profile A Profile instance
*/
public function loadProfile($token)
{
return $this->storage->read($token);
}
/**
* Saves a Profile.
*
* @return bool
*/
public function saveProfile(Profile $profile)
{
// late collect
foreach ($profile->getCollectors() as $collector) {
if ($collector instanceof LateDataCollectorInterface) {
$collector->lateCollect();
}
}
if (!($ret = $this->storage->write($profile)) && null !== $this->logger) {
$this->logger->warning('Unable to store the profiler information.', array('configured_storage' => get_class($this->storage)));
}
return $ret;
}
/**
* Purges all data from the storage.
*/
public function purge()
{
$this->storage->purge();
}
/**
* Exports the current profiler data.
*
* @return string The exported data
*/
public function export(Profile $profile)
{
return base64_encode(serialize($profile));
}
/**
* Imports data into the profiler storage.
*
* @param string $data A data string as exported by the export() method
*
* @return Profile|false A Profile instance
*/
public function import($data)
{
$profile = unserialize(base64_decode($data));
if ($this->storage->read($profile->getToken())) {
return false;
}
$this->saveProfile($profile);
return $profile;
}
/**
* Finds profiler tokens for the given criteria.
*
* @param string $ip The IP
* @param string $url The URL
* @param string $limit The maximum number of tokens to return
* @param string $method The request method
* @param string $start The start date to search from
* @param string $end The end date to search to
*
* @return array An array of tokens
*
* @see http://php.net/manual/en/datetime.formats.php for the supported date/time formats
*/
public function find($ip, $url, $limit, $method, $start, $end)
{
return $this->storage->find($ip, $url, $limit, $method, $this->getTimestamp($start), $this->getTimestamp($end));
}
/**
* Collects data for the given Response.
*
* @return Profile|null A Profile instance or null if the profiler is disabled
*/
public function collect(Request $request, Response $response, \Exception $exception = null)
{
if (false === $this->enabled) {
return;
}
$profile = new Profile(substr(hash('sha256', uniqid(mt_rand(), true)), 0, 6));
$profile->setTime(time());
$profile->setUrl($request->getUri());
$profile->setMethod($request->getMethod());
$profile->setStatusCode($response->getStatusCode());
try {
$profile->setIp($request->getClientIp());
} catch (ConflictingHeadersException $e) {
$profile->setIp('Unknown');
}
$response->headers->set('X-Debug-Token', $profile->getToken());
foreach ($this->collectors as $collector) {
$collector->collect($request, $response, $exception);
// we need to clone for sub-requests
$profile->addCollector(clone $collector);
}
return $profile;
}
/**
* Gets the Collectors associated with this profiler.
*
* @return array An array of collectors
*/
public function all()
{
return $this->collectors;
}
/**
* Sets the Collectors associated with this profiler.
*
* @param DataCollectorInterface[] $collectors An array of collectors
*/
public function set(array $collectors = array())
{
$this->collectors = array();
foreach ($collectors as $collector) {
$this->add($collector);
}
}
/**
* Adds a Collector.
*/
public function add(DataCollectorInterface $collector)
{
$this->collectors[$collector->getName()] = $collector;
}
/**
* Returns true if a Collector for the given name exists.
*
* @param string $name A collector name
*
* @return bool
*/
public function has($name)
{
return isset($this->collectors[$name]);
}
/**
* Gets a Collector by name.
*
* @param string $name A collector name
*
* @return DataCollectorInterface A DataCollectorInterface instance
*
* @throws \InvalidArgumentException if the collector does not exist
*/
public function get($name)
{
if (!isset($this->collectors[$name])) {
throw new \InvalidArgumentException(sprintf('Collector "%s" does not exist.', $name));
}
return $this->collectors[$name];
}
private function getTimestamp($value)
{
if (null === $value || '' == $value) {
return;
}
try {
$value = new \DateTime(is_numeric($value) ? '@'.$value : $value);
} catch (\Exception $e) {
return;
}
return $value->getTimestamp();
}
}