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<?php
namespace Elastica\Transport;
use Elastica\Exception\Connection\HttpException;
use Elastica\Exception\PartialShardFailureException;
use Elastica\Exception\ResponseException;
use Elastica\JSON;
use Elastica\Request;
use Elastica\Response;
/**
* Elastica Http Transport object
*
* @category Xodoa
* @package Elastica
* @author Nicolas Ruflin <spam@ruflin.com>
*/
class Http extends AbstractTransport
{
/**
* Http scheme
*
* @var string Http scheme
*/
protected $_scheme = 'http';
/**
* Curl resource to reuse
*
* @var resource Curl resource to reuse
*/
protected static $_curlConnection = null;
/**
* Makes calls to the elasticsearch server
*
* All calls that are made to the server are done through this function
*
* @param \Elastica\Request $request
* @param array $params Host, Port, ...
* @throws \Elastica\Exception\ConnectionException
* @throws \Elastica\Exception\ResponseException
* @throws \Elastica\Exception\Connection\HttpException
* @return \Elastica\Response Response object
*/
public function exec(Request $request, array $params)
{
$connection = $this->getConnection();
$conn = $this->_getConnection($connection->isPersistent());
// If url is set, url is taken. Otherwise port, host and path
$url = $connection->hasConfig('url') ? $connection->getConfig('url') : '';
if (!empty($url)) {
$baseUri = $url;
} else {
$baseUri = $this->_scheme . '://' . $connection->getHost() . ':' . $connection->getPort() . '/' . $connection->getPath();
}
$baseUri .= $request->getPath();
$query = $request->getQuery();
if (!empty($query)) {
$baseUri .= '?' . http_build_query($query);
}
curl_setopt($conn, CURLOPT_URL, $baseUri);
curl_setopt($conn, CURLOPT_TIMEOUT, $connection->getTimeout());
curl_setopt($conn, CURLOPT_FORBID_REUSE, 0);
$proxy = $connection->getProxy();
if (!is_null($proxy)) {
curl_setopt($conn, CURLOPT_PROXY, $proxy);
}
$this->_setupCurl($conn);
$headersConfig = $connection->hasConfig('headers') ? $connection->getConfig('headers') : array();
if (!empty($headersConfig)) {
$headers = array();
while (list($header, $headerValue) = each($headersConfig)) {
array_push($headers, $header . ': ' . $headerValue);
}
curl_setopt($conn, CURLOPT_HTTPHEADER, $headers);
}
// TODO: REFACTOR
$data = $request->getData();
$httpMethod = $request->getMethod();
if (!empty($data) || '0' === $data) {
if ($this->hasParam('postWithRequestBody') && $this->getParam('postWithRequestBody') == true) {
$httpMethod = Request::POST;
}
if (is_array($data)) {
$content = JSON::stringify($data, 'JSON_ELASTICSEARCH');
} else {
$content = $data;
}
// Escaping of / not necessary. Causes problems in base64 encoding of files
$content = str_replace('\/', '/', $content);
curl_setopt($conn, CURLOPT_POSTFIELDS, $content);
} else {
curl_setopt($conn, CURLOPT_POSTFIELDS, '');
}
curl_setopt($conn, CURLOPT_NOBODY, $httpMethod == 'HEAD');
curl_setopt($conn, CURLOPT_CUSTOMREQUEST, $httpMethod);
if (defined('DEBUG') && DEBUG) {
// Track request headers when in debug mode
curl_setopt($conn, CURLINFO_HEADER_OUT, true);
}
$start = microtime(true);
// cURL opt returntransfer leaks memory, therefore OB instead.
ob_start();
curl_exec($conn);
$responseString = ob_get_clean();
$end = microtime(true);
// Checks if error exists
$errorNumber = curl_errno($conn);
$response = new Response($responseString, curl_getinfo($this->_getConnection(), CURLINFO_HTTP_CODE));
if (defined('DEBUG') && DEBUG) {
$response->setQueryTime($end - $start);
}
$response->setTransferInfo(curl_getinfo($conn));
if ($response->hasError()) {
throw new ResponseException($request, $response);
}
if ($response->hasFailedShards()) {
throw new PartialShardFailureException($request, $response);
}
if ($errorNumber > 0) {
throw new HttpException($errorNumber, $request, $response);
}
return $response;
}
/**
* Called to add additional curl params
*
* @param resource $curlConnection Curl connection
*/
protected function _setupCurl($curlConnection)
{
if ($this->getConnection()->hasConfig('curl')) {
foreach ($this->getConnection()->getConfig('curl') as $key => $param) {
curl_setopt($curlConnection, $key, $param);
}
}
}
/**
* Return Curl resource
*
* @param bool $persistent False if not persistent connection
* @return resource Connection resource
*/
protected function _getConnection($persistent = true)
{
if (!$persistent || !self::$_curlConnection) {
self::$_curlConnection = curl_init();
}
return self::$_curlConnection;
}
}
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