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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;
/**
* RedisProfilerStorage stores profiling information in Redis.
*
* @author Andrej Hudec <pulzarraider@gmail.com>
* @author Stephane PY <py.stephane1@gmail.com>
*/
class RedisProfilerStorage implements ProfilerStorageInterface
{
const TOKEN_PREFIX = 'sf_profiler_';
const REDIS_OPT_SERIALIZER = 1;
const REDIS_OPT_PREFIX = 2;
const REDIS_SERIALIZER_NONE = 0;
const REDIS_SERIALIZER_PHP = 1;
protected $dsn;
protected $lifetime;
/**
* @var \Redis
*/
private $redis;
/**
* Constructor.
*
* @param string $dsn A data source name
* @param string $username Not used
* @param string $password Not used
* @param int $lifetime The lifetime to use for the purge
*/
public function __construct($dsn, $username = '', $password = '', $lifetime = 86400)
{
$this->dsn = $dsn;
$this->lifetime = (int) $lifetime;
}
/**
* {@inheritdoc}
*/
public function find($ip, $url, $limit, $method, $start = null, $end = null)
{
$indexName = $this->getIndexName();
if (!$indexContent = $this->getValue($indexName, self::REDIS_SERIALIZER_NONE)) {
return array();
}
$profileList = array_reverse(explode("\n", $indexContent));
$result = array();
foreach ($profileList as $item) {
if ($limit === 0) {
break;
}
if ($item == '') {
continue;
}
list($itemToken, $itemIp, $itemMethod, $itemUrl, $itemTime, $itemParent) = explode("\t", $item, 6);
$itemTime = (int) $itemTime;
if ($ip && false === strpos($itemIp, $ip) || $url && false === strpos($itemUrl, $url) || $method && false === strpos($itemMethod, $method)) {
continue;
}
if (!empty($start) && $itemTime < $start) {
continue;
}
if (!empty($end) && $itemTime > $end) {
continue;
}
$result[] = array(
'token' => $itemToken,
'ip' => $itemIp,
'method' => $itemMethod,
'url' => $itemUrl,
'time' => $itemTime,
'parent' => $itemParent,
);
--$limit;
}
return $result;
}
/**
* {@inheritdoc}
*/
public function purge()
{
// delete only items from index
$indexName = $this->getIndexName();
$indexContent = $this->getValue($indexName, self::REDIS_SERIALIZER_NONE);
if (!$indexContent) {
return false;
}
$profileList = explode("\n", $indexContent);
$result = array();
foreach ($profileList as $item) {
if ($item == '') {
continue;
}
if (false !== $pos = strpos($item, "\t")) {
$result[] = $this->getItemName(substr($item, 0, $pos));
}
}
$result[] = $indexName;
return $this->delete($result);
}
/**
* {@inheritdoc}
*/
public function read($token)
{
if (empty($token)) {
return false;
}
$profile = $this->getValue($this->getItemName($token), self::REDIS_SERIALIZER_PHP);
if (false !== $profile) {
$profile = $this->createProfileFromData($token, $profile);
}
return $profile;
}
/**
* {@inheritdoc}
*/
public function write(Profile $profile)
{
$data = array(
'token' => $profile->getToken(),
'parent' => $profile->getParentToken(),
'children' => array_map(function ($p) { return $p->getToken(); }, $profile->getChildren()),
'data' => $profile->getCollectors(),
'ip' => $profile->getIp(),
'method' => $profile->getMethod(),
'url' => $profile->getUrl(),
'time' => $profile->getTime(),
);
$profileIndexed = false !== $this->getValue($this->getItemName($profile->getToken()));
if ($this->setValue($this->getItemName($profile->getToken()), $data, $this->lifetime, self::REDIS_SERIALIZER_PHP)) {
if (!$profileIndexed) {
// Add to index
$indexName = $this->getIndexName();
$indexRow = implode("\t", array(
$profile->getToken(),
$profile->getIp(),
$profile->getMethod(),
$profile->getUrl(),
$profile->getTime(),
$profile->getParentToken(),
))."\n";
return $this->appendValue($indexName, $indexRow, $this->lifetime);
}
return true;
}
return false;
}
/**
* Internal convenience method that returns the instance of Redis.
*
* @return \Redis
*
* @throws \RuntimeException
*/
protected function getRedis()
{
if (null === $this->redis) {
$data = parse_url($this->dsn);
if (false === $data || !isset($data['scheme']) || $data['scheme'] !== 'redis' || !isset($data['host']) || !isset($data['port'])) {
throw new \RuntimeException(sprintf('Please check your configuration. You are trying to use Redis with an invalid dsn "%s". The minimal expected format is "redis://[host]:port".', $this->dsn));
}
if (!extension_loaded('redis')) {
throw new \RuntimeException('RedisProfilerStorage requires that the redis extension is loaded.');
}
$redis = new \Redis();
$redis->connect($data['host'], $data['port']);
if (isset($data['path'])) {
$redis->select(substr($data['path'], 1));
}
if (isset($data['pass'])) {
$redis->auth($data['pass']);
}
$redis->setOption(self::REDIS_OPT_PREFIX, self::TOKEN_PREFIX);
$this->redis = $redis;
}
return $this->redis;
}
/**
* Set instance of the Redis.
*
* @param \Redis $redis
*/
public function setRedis($redis)
{
$this->redis = $redis;
}
private function createProfileFromData($token, $data, $parent = null)
{
$profile = new Profile($token);
$profile->setIp($data['ip']);
$profile->setMethod($data['method']);
$profile->setUrl($data['url']);
$profile->setTime($data['time']);
$profile->setCollectors($data['data']);
if (!$parent && $data['parent']) {
$parent = $this->read($data['parent']);
}
if ($parent) {
$profile->setParent($parent);
}
foreach ($data['children'] as $token) {
if (!$token) {
continue;
}
if (!$childProfileData = $this->getValue($this->getItemName($token), self::REDIS_SERIALIZER_PHP)) {
continue;
}
$profile->addChild($this->createProfileFromData($token, $childProfileData, $profile));
}
return $profile;
}
/**
* Gets the item name.
*
* @param string $token
*
* @return string
*/
private function getItemName($token)
{
$name = $token;
if ($this->isItemNameValid($name)) {
return $name;
}
return false;
}
/**
* Gets the name of the index.
*
* @return string
*/
private function getIndexName()
{
$name = 'index';
if ($this->isItemNameValid($name)) {
return $name;
}
return false;
}
private function isItemNameValid($name)
{
$length = strlen($name);
if ($length > 2147483648) {
throw new \RuntimeException(sprintf('The Redis item key "%s" is too long (%s bytes). Allowed maximum size is 2^31 bytes.', $name, $length));
}
return true;
}
/**
* Retrieves an item from the Redis server.
*
* @param string $key
* @param int $serializer
*
* @return mixed
*/
private function getValue($key, $serializer = self::REDIS_SERIALIZER_NONE)
{
$redis = $this->getRedis();
$redis->setOption(self::REDIS_OPT_SERIALIZER, $serializer);
return $redis->get($key);
}
/**
* Stores an item on the Redis server under the specified key.
*
* @param string $key
* @param mixed $value
* @param int $expiration
* @param int $serializer
*
* @return bool
*/
private function setValue($key, $value, $expiration = 0, $serializer = self::REDIS_SERIALIZER_NONE)
{
$redis = $this->getRedis();
$redis->setOption(self::REDIS_OPT_SERIALIZER, $serializer);
return $redis->setex($key, $expiration, $value);
}
/**
* Appends data to an existing item on the Redis server.
*
* @param string $key
* @param string $value
* @param int $expiration
*
* @return bool
*/
private function appendValue($key, $value, $expiration = 0)
{
$redis = $this->getRedis();
$redis->setOption(self::REDIS_OPT_SERIALIZER, self::REDIS_SERIALIZER_NONE);
if ($redis->exists($key)) {
$redis->append($key, $value);
return $redis->setTimeout($key, $expiration);
}
return $redis->setex($key, $expiration, $value);
}
/**
* Removes the specified keys.
*
* @param array $keys
*
* @return bool
*/
private function delete(array $keys)
{
return (bool) $this->getRedis()->delete($keys);
}
}