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<?php
/**
* Copyright 2014 Klarna AB
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* File containing the Connector class.
*/
namespace Klarna\Rest\Transport;
use GuzzleHttp\Client;
use GuzzleHttp\ClientInterface;
use GuzzleHttp\Exception\RequestException;
use GuzzleHttp\Message\RequestInterface;
use GuzzleHttp\Message\ResponseInterface;
use Klarna\Rest\Transport\Exception\ConnectorException;
/**
* Transport connector used to authenticate and make HTTP requests against the
* Klarna APIs.
*/
class Connector implements ConnectorInterface
{
/**
* HTTP transport client.
*
* @var ClientInterface
*/
protected $client;
/**
* Merchant ID.
*
* @var string
*/
protected $merchantId;
/**
* Shared secret.
*
* @var string
*/
protected $sharedSecret;
/**
* HTTP user agent.
*
* @var UserAgent
*/
protected $userAgent;
/**
* Constructs a connector instance.
*
* Example usage:
*
* $client = new \GuzzleHttp\Client(['base_url' => 'https://api.klarna.com']);
* $connector = new \Klarna\Transport\Connector($client, '0', 'sharedSecret');
*
*
* @param ClientInterface $client HTTP transport client
* @param string $merchantId Merchant ID
* @param string $sharedSecret Shared secret
* @param UserAgentInterface $userAgent HTTP user agent to identify the client
*/
public function __construct(
ClientInterface $client,
$merchantId,
$sharedSecret,
UserAgentInterface $userAgent = null
) {
$this->client = $client;
$this->merchantId = $merchantId;
$this->sharedSecret = $sharedSecret;
if ($userAgent === null) {
$userAgent = UserAgent::createDefault();
}
$this->userAgent = $userAgent;
}
/**
* Creates a request object.
*
* @param string $url URL
* @param string $method HTTP method
* @param array $options Request options
*
* @return RequestInterface
*/
public function createRequest($url, $method = 'GET', array $options = [])
{
$options['auth'] = [$this->merchantId, $this->sharedSecret];
$options['headers']['User-Agent'] = strval($this->userAgent);
return $this->client->createRequest($method, $url, $options);
}
/**
* Sends the request.
*
* @param RequestInterface $request Request to send
*
* @throws ConnectorException If the API returned an error response
* @throws RequestException When an error is encountered
* @throws \LogicException When the adapter does not populate a response
*
* @return ResponseInterface
*/
public function send(RequestInterface $request)
{
try {
return $this->client->send($request);
} catch (RequestException $e) {
if (!$e->hasResponse()) {
throw $e;
}
$response = $e->getResponse();
if ($response->getHeader('Content-Type') !== 'application/json') {
throw $e;
}
$data = $response->json();
if (!is_array($data) || !array_key_exists('error_code', $data)) {
throw $e;
}
throw new ConnectorException($data, $e);
}
}
/**
* Gets the HTTP transport client.
*
* @return ClientInterface
*/
public function getClient()
{
return $this->client;
}
/**
* Gets the user agent.
*
* @return UserAgentInterface
*/
public function getUserAgent()
{
return $this->userAgent;
}
/**
* Factory method to create a connector instance.
*
* @param string $merchantId Merchant ID
* @param string $sharedSecret Shared secret
* @param string $baseUrl Base URL for HTTP requests
* @param UserAgentInterface $userAgent HTTP user agent to identify the client
*
* @return self
*/
public static function create(
$merchantId,
$sharedSecret,
$baseUrl = self::EU_BASE_URL,
UserAgentInterface $userAgent = null
) {
$client = new Client(['base_url' => $baseUrl]);
return new static($client, $merchantId, $sharedSecret, $userAgent);
}
}