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