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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;
/**
* Base PDO storage for profiling information in a PDO database.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Jan Schumann <js@schumann-it.com>
*/
abstract class PdoProfilerStorage implements ProfilerStorageInterface
{
protected $dsn;
protected $username;
protected $password;
protected $lifetime;
protected $db;
/**
* Constructor.
*
* @param string $dsn A data source name
* @param string $username The username for the database
* @param string $password The password for the database
* @param int $lifetime The lifetime to use for the purge
*/
public function __construct($dsn, $username = '', $password = '', $lifetime = 86400)
{
$this->dsn = $dsn;
$this->username = $username;
$this->password = $password;
$this->lifetime = (int) $lifetime;
}
/**
* {@inheritdoc}
*/
public function find($ip, $url, $limit, $method, $start = null, $end = null)
{
if (null === $start) {
$start = 0;
}
if (null === $end) {
$end = time();
}
list($criteria, $args) = $this->buildCriteria($ip, $url, $start, $end, $limit, $method);
$criteria = $criteria ? 'WHERE '.implode(' AND ', $criteria) : '';
$db = $this->initDb();
$tokens = $this->fetch($db, 'SELECT token, ip, method, url, time, parent FROM sf_profiler_data '.$criteria.' ORDER BY time DESC LIMIT '.((int) $limit), $args);
$this->close($db);
return $tokens;
}
/**
* {@inheritdoc}
*/
public function read($token)
{
$db = $this->initDb();
$args = array(':token' => $token);
$data = $this->fetch($db, 'SELECT data, parent, ip, method, url, time FROM sf_profiler_data WHERE token = :token LIMIT 1', $args);
$this->close($db);
if (isset($data[0]['data'])) {
return $this->createProfileFromData($token, $data[0]);
}
}
/**
* {@inheritdoc}
*/
public function write(Profile $profile)
{
$db = $this->initDb();
$args = array(
':token' => $profile->getToken(),
':parent' => $profile->getParentToken(),
':data' => base64_encode(serialize($profile->getCollectors())),
':ip' => $profile->getIp(),
':method' => $profile->getMethod(),
':url' => $profile->getUrl(),
':time' => $profile->getTime(),
':created_at' => time(),
);
try {
if ($this->has($profile->getToken())) {
$this->exec($db, 'UPDATE sf_profiler_data SET parent = :parent, data = :data, ip = :ip, method = :method, url = :url, time = :time, created_at = :created_at WHERE token = :token', $args);
} else {
$this->exec($db, 'INSERT INTO sf_profiler_data (token, parent, data, ip, method, url, time, created_at) VALUES (:token, :parent, :data, :ip, :method, :url, :time, :created_at)', $args);
}
$this->cleanup();
$status = true;
} catch (\Exception $e) {
$status = false;
}
$this->close($db);
return $status;
}
/**
* {@inheritdoc}
*/
public function purge()
{
$db = $this->initDb();
$this->exec($db, 'DELETE FROM sf_profiler_data');
$this->close($db);
}
/**
* Build SQL criteria to fetch records by ip and url.
*
* @param string $ip The IP
* @param string $url The URL
* @param string $start The start period to search from
* @param string $end The end period to search to
* @param string $limit The maximum number of tokens to return
* @param string $method The request method
*
* @return array An array with (criteria, args)
*/
abstract protected function buildCriteria($ip, $url, $start, $end, $limit, $method);
/**
* Initializes the database.
*
* @throws \RuntimeException When the requested database driver is not installed
*/
abstract protected function initDb();
protected function cleanup()
{
$db = $this->initDb();
$this->exec($db, 'DELETE FROM sf_profiler_data WHERE created_at < :time', array(':time' => time() - $this->lifetime));
$this->close($db);
}
protected function exec($db, $query, array $args = array())
{
$stmt = $this->prepareStatement($db, $query);
foreach ($args as $arg => $val) {
$stmt->bindValue($arg, $val, is_int($val) ? \PDO::PARAM_INT : \PDO::PARAM_STR);
}
$success = $stmt->execute();
if (!$success) {
throw new \RuntimeException(sprintf('Error executing query "%s"', $query));
}
}
protected function prepareStatement($db, $query)
{
try {
$stmt = $db->prepare($query);
} catch (\Exception $e) {
$stmt = false;
}
if (false === $stmt) {
throw new \RuntimeException('The database cannot successfully prepare the statement');
}
return $stmt;
}
protected function fetch($db, $query, array $args = array())
{
$stmt = $this->prepareStatement($db, $query);
foreach ($args as $arg => $val) {
$stmt->bindValue($arg, $val, is_int($val) ? \PDO::PARAM_INT : \PDO::PARAM_STR);
}
$stmt->execute();
$return = $stmt->fetchAll(\PDO::FETCH_ASSOC);
return $return;
}
protected function close($db)
{
}
protected function createProfileFromData($token, $data, $parent = null)
{
$profile = new Profile($token);
$profile->setIp($data['ip']);
$profile->setMethod($data['method']);
$profile->setUrl($data['url']);
$profile->setTime($data['time']);
$profile->setCollectors(unserialize(base64_decode($data['data'])));
if (!$parent && !empty($data['parent'])) {
$parent = $this->read($data['parent']);
}
if ($parent) {
$profile->setParent($parent);
}
$profile->setChildren($this->readChildren($token, $profile));
return $profile;
}
/**
* Reads the child profiles for the given token.
*
* @param string $token The parent token
* @param string $parent The parent instance
*
* @return Profile[] An array of Profile instance
*/
protected function readChildren($token, $parent)
{
$db = $this->initDb();
$data = $this->fetch($db, 'SELECT token, data, ip, method, url, time FROM sf_profiler_data WHERE parent = :token', array(':token' => $token));
$this->close($db);
if (!$data) {
return array();
}
$profiles = array();
foreach ($data as $d) {
$profiles[] = $this->createProfileFromData($d['token'], $d, $parent);
}
return $profiles;
}
/**
* Returns whether data for the given token already exists in storage.
*
* @param string $token The profile token
*
* @return string
*/
protected function has($token)
{
$db = $this->initDb();
$tokenExists = $this->fetch($db, 'SELECT 1 FROM sf_profiler_data WHERE token = :token LIMIT 1', array(':token' => $token));
$this->close($db);
return !empty($tokenExists);
}
}