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<?php
namespace Aws\Api\ErrorParser;
use Aws\Api\Parser\PayloadParserTrait;
use Aws\Api\Parser\XmlParser;
use Aws\Api\Service;
use Aws\Api\StructureShape;
use Aws\CommandInterface;
use Psr\Http\Message\ResponseInterface;
/**
* Parses XML errors.
*/
class XmlErrorParser extends AbstractErrorParser
{
use PayloadParserTrait;
protected $parser;
public function __construct(Service $api = null, XmlParser $parser = null)
{
parent::__construct($api);
$this->parser = $parser ?: new XmlParser();
}
public function __invoke(
ResponseInterface $response,
CommandInterface $command = null
) {
$code = (string) $response->getStatusCode();
$data = [
'type' => $code[0] == '4' ? 'client' : 'server',
'request_id' => null,
'code' => null,
'message' => null,
'parsed' => null
];
$body = $response->getBody();
if ($body->getSize() > 0) {
$this->parseBody($this->parseXml($body, $response), $data);
} else {
$this->parseHeaders($response, $data);
}
$this->populateShape($data, $response, $command);
return $data;
}
private function parseHeaders(ResponseInterface $response, array &$data)
{
if ($response->getStatusCode() == '404') {
$data['code'] = 'NotFound';
}
$data['message'] = $response->getStatusCode() . ' '
. $response->getReasonPhrase();
if ($requestId = $response->getHeaderLine('x-amz-request-id')) {
$data['request_id'] = $requestId;
$data['message'] .= " (Request-ID: $requestId)";
}
}
private function parseBody(\SimpleXMLElement $body, array &$data)
{
$data['parsed'] = $body;
$prefix = $this->registerNamespacePrefix($body);
if ($tempXml = $body->xpath("//{$prefix}Code[1]")) {
$data['code'] = (string) $tempXml[0];
}
if ($tempXml = $body->xpath("//{$prefix}Message[1]")) {
$data['message'] = (string) $tempXml[0];
}
$tempXml = $body->xpath("//{$prefix}RequestId[1]");
if (isset($tempXml[0])) {
$data['request_id'] = (string)$tempXml[0];
}
}
protected function registerNamespacePrefix(\SimpleXMLElement $element)
{
$namespaces = $element->getDocNamespaces();
if (!isset($namespaces[''])) {
return '';
}
// Account for the default namespace being defined and PHP not
// being able to handle it :(.
$element->registerXPathNamespace('ns', $namespaces['']);
return 'ns:';
}
protected function payload(
ResponseInterface $response,
StructureShape $member
) {
$xmlBody = $this->parseXml($response->getBody(), $response);
$prefix = $this->registerNamespacePrefix($xmlBody);
$errorBody = $xmlBody->xpath("//{$prefix}Error");
if (is_array($errorBody) && !empty($errorBody[0])) {
return $this->parser->parse($member, $errorBody[0]);
}
}
}
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