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113 lines
3.7 KiB
113 lines
3.7 KiB
<?php
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namespace Qcloud\Cos;
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use Psr\Http\Message\RequestInterface;
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use Psr\Http\Message\ResponseInterface;
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/**
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* Parses default XML exception responses
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*/
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class ExceptionParser {
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public function parse(RequestInterface $request, ResponseInterface $response) {
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$data = array(
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'code' => null,
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'message' => null,
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//'type' => $response->isClientError() ? 'client' : 'server',
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'type' => 'client',
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'request_id' => null,
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'parsed' => null
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);
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$body = strval($response->getBody());
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if (empty($body)) {
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$this->parseHeaders($request, $response, $data);
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return $data;
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}
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try {
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$xml = new \SimpleXMLElement(utf8_encode($body));
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$this->parseBody($xml, $data);
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return $data;
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} catch (\Exception $e) {
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$data['code'] = 'PhpInternalXmlParseError';
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$data['message'] = 'A non-XML response was received';
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return $data;
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}
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}
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/**
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* Parses additional exception information from the response headers
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*
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* @param RequestInterface $request Request that was issued
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* @param Response $response The response from the request
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* @param array $data The current set of exception data
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*/
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protected function parseHeaders(RequestInterface $request, ResponseInterface $response, array &$data) {
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$data['message'] = $response->getStatusCode() . ' ' . $response->getReasonPhrase();
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$requestId = $response->getHeader('x-cos-request-id');
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if (isset($requestId[0])) {
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$requestId = $requestId[0];
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$data['request_id'] = $requestId;
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$data['message'] .= " (Request-ID: $requestId)";
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}
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// Get the request
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$status = $response->getStatusCode();
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$method = $request->getMethod();
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// Attempt to determine code for 403s and 404s
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if ($status === 403) {
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$data['code'] = 'AccessDenied';
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} elseif ($method === 'HEAD' && $status === 404) {
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$path = explode('/', trim($request->getUri()->getPath(), '/'));
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$host = explode('.', $request->getUri()->getHost());
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$bucket = (count($host) >= 4) ? $host[0] : array_shift($path);
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$object = array_shift($path);
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if ($bucket && $object) {
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$data['code'] = 'NoSuchKey';
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} elseif ($bucket) {
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$data['code'] = 'NoSuchBucket';
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}
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}
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}
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/**
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* Parses additional exception information from the response body
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*
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* @param \SimpleXMLElement $body The response body as XML
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* @param array $data The current set of exception data
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*/
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protected function parseBody(\SimpleXMLElement $body, array &$data) {
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$data['parsed'] = $body;
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$namespaces = $body->getDocNamespaces();
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if (isset($namespaces[''])) {
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// Account for the default namespace being defined and PHP not being able to handle it :(
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$body->registerXPathNamespace('ns', $namespaces['']);
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$prefix = 'ns:';
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} else {
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$prefix = '';
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}
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if ($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 (empty($tempXml)) {
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$tempXml = $body->xpath("//{$prefix}RequestID[1]");
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}
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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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}
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