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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\httpclient;
use yii\base\Component;
use Yii;
use yii\base\InvalidParamException;
use yii\helpers\StringHelper;
/**
* Client provide high level interface for HTTP requests execution.
*
* @property Transport $transport HTTP message transport instance. Note that the type of this property differs
* in getter and setter. See [[getTransport()]] and [[setTransport()]] for details.
*
* @author Paul Klimov <klimov.paul@gmail.com>
* @since 2.0
*/
class Client extends Component
{
/**
* @event RequestEvent an event raised right before sending request.
*/
const EVENT_BEFORE_SEND = 'beforeSend';
/**
* @event RequestEvent an event raised right after request has been sent.
*/
const EVENT_AFTER_SEND = 'afterSend';
/**
* JSON format
*/
const FORMAT_JSON = 'json';
/**
* urlencoded by RFC1738 query string, like name1=value1&name2=value2
* @see http://php.net/manual/en/function.urlencode.php
*/
const FORMAT_URLENCODED = 'urlencoded';
/**
* urlencoded by PHP_QUERY_RFC3986 query string, like name1=value1&name2=value2
* @see http://php.net/manual/en/function.rawurlencode.php
*/
const FORMAT_RAW_URLENCODED = 'raw-urlencoded';
/**
* XML format
*/
const FORMAT_XML = 'xml';
/**
* CURL format
* @since 2.0.9
*/
const FORMAT_CURL = 'curl';
/**
* @var string base request URL.
*/
public $baseUrl;
/**
* @var array the formatters for converting data into the content of the specified [[format]].
* The array keys are the format names, and the array values are the corresponding configurations
* for creating the formatter objects.
*/
public $formatters = [];
/**
* @var array the parsers for converting content of the specified [[format]] into the data.
* The array keys are the format names, and the array values are the corresponding configurations
* for creating the parser objects.
*/
public $parsers = [];
/**
* @var array request object configuration.
*/
public $requestConfig = [];
/**
* @var array response config configuration.
*/
public $responseConfig = [];
/**
* @var int maximum symbols count of the request content, which should be taken to compose a
* log and profile messages. Exceeding content will be truncated.
* @see createRequestLogToken()
*/
public $contentLoggingMaxSize = 2000;
/**
* @var Transport|array|string|callable HTTP message transport.
*/
private $_transport = 'yii\httpclient\StreamTransport';
/**
* Sets the HTTP message transport. It can be specified in one of the following forms:
*
* - an instance of `Transport`: actual transport object to be used
* - a string: representing the class name of the object to be created
* - a configuration array: the array must contain a `class` element which is treated as the object class,
* and the rest of the name-value pairs will be used to initialize the corresponding object properties
* - a PHP callable: either an anonymous function or an array representing a class method (`[$class or $object, $method]`).
* The callable should return a new instance of the object being created.
* @param Transport|array|string $transport HTTP message transport
*/
public function setTransport($transport)
{
$this->_transport = $transport;
}
/**
* @return Transport HTTP message transport instance.
* @throws \yii\base\InvalidConfigException
*/
public function getTransport()
{
if (!is_object($this->_transport)) {
$this->_transport = Yii::createObject($this->_transport);
}
return $this->_transport;
}
/**
* Returns HTTP message formatter instance for the specified format.
* @param string $format format name.
* @return FormatterInterface formatter instance.
* @throws InvalidParamException on invalid format name.
* @throws \yii\base\InvalidConfigException
*/
public function getFormatter($format)
{
static $defaultFormatters = [
self::FORMAT_JSON => 'yii\httpclient\JsonFormatter',
self::FORMAT_URLENCODED => [
'class' => 'yii\httpclient\UrlEncodedFormatter',
'encodingType' => PHP_QUERY_RFC1738
],
self::FORMAT_RAW_URLENCODED => [
'class' => 'yii\httpclient\UrlEncodedFormatter',
'encodingType' => PHP_QUERY_RFC3986
],
self::FORMAT_XML => 'yii\httpclient\XmlFormatter',
self::FORMAT_CURL => 'yii\httpclient\CurlFormatter',
];
if (!isset($this->formatters[$format])) {
if (!isset($defaultFormatters[$format])) {
throw new InvalidParamException("Unrecognized format '{$format}'");
}
$this->formatters[$format] = $defaultFormatters[$format];
}
if (!is_object($this->formatters[$format])) {
$this->formatters[$format] = Yii::createObject($this->formatters[$format]);
}
return $this->formatters[$format];
}
/**
* Returns HTTP message parser instance for the specified format.
* @param string $format format name
* @return ParserInterface parser instance.
* @throws InvalidParamException on invalid format name.
* @throws \yii\base\InvalidConfigException
*/
public function getParser($format)
{
static $defaultParsers = [
self::FORMAT_JSON => 'yii\httpclient\JsonParser',
self::FORMAT_URLENCODED => 'yii\httpclient\UrlEncodedParser',
self::FORMAT_RAW_URLENCODED => 'yii\httpclient\UrlEncodedParser',
self::FORMAT_XML => 'yii\httpclient\XmlParser',
];
if (!isset($this->parsers[$format])) {
if (!isset($defaultParsers[$format])) {
throw new InvalidParamException("Unrecognized format '{$format}'");
}
$this->parsers[$format] = $defaultParsers[$format];
}
if (!is_object($this->parsers[$format])) {
$this->parsers[$format] = Yii::createObject($this->parsers[$format]);
}
return $this->parsers[$format];
}
/**
* @return Request request instance.
* @throws \yii\base\InvalidConfigException
*/
public function createRequest()
{
$config = $this->requestConfig;
if (!isset($config['class'])) {
$config['class'] = Request::className();
}
$config['client'] = $this;
return Yii::createObject($config);
}
/**
* Creates a response instance.
* @param string $content raw content
* @param array $headers headers list.
* @return Response request instance.
* @throws \yii\base\InvalidConfigException
*/
public function createResponse($content = null, array $headers = [])
{
$config = $this->responseConfig;
if (!isset($config['class'])) {
$config['class'] = Response::className();
}
$config['client'] = $this;
$response = Yii::createObject($config);
$response->setContent($content);
$response->setHeaders($headers);
return $response;
}
/**
* Performs given request.
* @param Request $request request to be sent.
* @return Response response instance.
* @throws Exception on failure.
* @throws \yii\base\InvalidConfigException
*/
public function send($request)
{
return $this->getTransport()->send($request);
}
/**
* Performs multiple HTTP requests in parallel.
* This method accepts an array of the [[Request]] objects and returns an array of the [[Response]] objects.
* Keys of the response array correspond the ones from request array.
*
* ```php
* $client = new Client();
* $requests = [
* 'news' => $client->get('http://domain.com/news'),
* 'friends' => $client->get('http://domain.com/user/friends', ['userId' => 12]),
* ];
* $responses = $client->batchSend($requests);
* var_dump($responses['news']->isOk);
* var_dump($responses['friends']->isOk);
* ```
*
* @param Request[] $requests requests to perform.
* @return Response[] responses list.
* @throws Exception
* @throws \yii\base\InvalidConfigException
*/
public function batchSend(array $requests)
{
return $this->getTransport()->batchSend($requests);
}
/**
* Composes the log/profiling message token for the given HTTP request parameters.
* This method should be used by transports during request sending logging.
* @param string $method request method name.
* @param string $url request URL.
* @param array $headers request headers.
* @param string $content request content.
* @return string log token.
*/
public function createRequestLogToken($method, $url, $headers, $content)
{
$token = strtoupper($method) . ' ' . $url;
if (!empty($headers)) {
$token .= "\n" . implode("\n", $headers);
}
if ($content !== null) {
$token .= "\n\n" . StringHelper::truncate($content, $this->contentLoggingMaxSize);
}
return $token;
}
// Create request shortcut methods :
/**
* Creates 'GET' request.
* @param array|string $url target URL.
* @param array|string $data if array - request data, otherwise - request content.
* @param array $headers request headers.
* @param array $options request options.
* @return Request request instance.
*/
public function get($url, $data = null, $headers = [], $options = [])
{
return $this->createRequestShortcut('GET', $url, $data, $headers, $options);
}
/**
* Creates 'POST' request.
* @param array|string $url target URL.
* @param array|string $data if array - request data, otherwise - request content.
* @param array $headers request headers.
* @param array $options request options.
* @return Request request instance.
*/
public function post($url, $data = null, $headers = [], $options = [])
{
return $this->createRequestShortcut('POST', $url, $data, $headers, $options);
}
/**
* Creates 'PUT' request.
* @param array|string $url target URL.
* @param array|string $data if array - request data, otherwise - request content.
* @param array $headers request headers.
* @param array $options request options.
* @return Request request instance.
*/
public function put($url, $data = null, $headers = [], $options = [])
{
return $this->createRequestShortcut('PUT', $url, $data, $headers, $options);
}
/**
* Creates 'PATCH' request.
* @param array|string $url target URL.
* @param array|string $data if array - request data, otherwise - request content.
* @param array $headers request headers.
* @param array $options request options.
* @return Request request instance.
*/
public function patch($url, $data = null, $headers = [], $options = [])
{
return $this->createRequestShortcut('PATCH', $url, $data, $headers, $options);
}
/**
* Creates 'DELETE' request.
* @param array|string $url target URL.
* @param array|string $data if array - request data, otherwise - request content.
* @param array $headers request headers.
* @param array $options request options.
* @return Request request instance.
*/
public function delete($url, $data = null, $headers = [], $options = [])
{
return $this->createRequestShortcut('DELETE', $url, $data, $headers, $options);
}
/**
* Creates 'HEAD' request.
* @param array|string $url target URL.
* @param array $headers request headers.
* @param array $options request options.
* @return Request request instance.
*/
public function head($url, $headers = [], $options = [])
{
return $this->createRequestShortcut('HEAD', $url, null, $headers, $options);
}
/**
* Creates 'OPTIONS' request.
* @param array|string $url target URL.
* @param array $options request options.
* @return Request request instance.
*/
public function options($url, $options = [])
{
return $this->createRequestShortcut('OPTIONS', $url, null, [], $options);
}
/**
* This method is invoked right before request is sent.
* The method will trigger the [[EVENT_BEFORE_SEND]] event.
* @param Request $request request instance.
* @since 2.0.1
*/
public function beforeSend($request)
{
$event = new RequestEvent();
$event->request = $request;
$this->trigger(self::EVENT_BEFORE_SEND, $event);
}
/**
* This method is invoked right after request is sent.
* The method will trigger the [[EVENT_AFTER_SEND]] event.
* @param Request $request request instance.
* @param Response $response received response instance.
* @since 2.0.1
*/
public function afterSend($request, $response)
{
$event = new RequestEvent();
$event->request = $request;
$event->response = $response;
$this->trigger(self::EVENT_AFTER_SEND, $event);
}
/**
* @param string $method
* @param array|string $url
* @param array|string $data
* @param array $headers
* @param array $options
* @return Request request instance.
* @throws \yii\base\InvalidConfigException
*/
protected function createRequestShortcut($method, $url, $data, $headers, $options)
{
$request = $this->createRequest()
->setMethod($method)
->setUrl($url)
->addHeaders($headers)
->addOptions($options);
if (is_array($data)) {
$request->setData($data);
} else {
$request->setContent($data);
}
return $request;
}
}