135 lines
4.4 KiB
PHP
135 lines
4.4 KiB
PHP
<?php
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/*
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* Copyright 2010 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* This class implements the RESTful transport of apiServiceRequest()'s
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*
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* @author Chris Chabot <chabotc@google.com>
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* @author Chirag Shah <chirags@google.com>
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*/
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class W3TCG_Google_Http_REST
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{
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/**
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* Executes a W3TCG_Google_Http_Request
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*
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* @param W3TCG_Google_Client $client
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* @param W3TCG_Google_Http_Request $req
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* @return array decoded result
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* @throws W3TCG_Google_Service_Exception on server side error (ie: not authenticated,
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* invalid or malformed post body, invalid url)
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*/
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public static function execute(W3TCG_Google_Client $client, W3TCG_Google_Http_Request $req)
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{
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$httpRequest = $client->getIo()->makeRequest($req);
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$httpRequest->setExpectedClass($req->getExpectedClass());
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return self::decodeHttpResponse($httpRequest);
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}
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/**
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* Decode an HTTP Response.
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* @static
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* @throws W3TCG_Google_Service_Exception
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* @param W3TCG_Google_Http_Request $response The http response to be decoded.
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* @return mixed|null
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*/
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public static function decodeHttpResponse($response)
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{
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$code = $response->getResponseHttpCode();
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$body = $response->getResponseBody();
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$decoded = null;
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if ((intVal($code)) >= 300) {
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$decoded = json_decode($body, true);
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$err = 'Error calling ' . $response->getRequestMethod() . ' ' . $response->getUrl();
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if (isset($decoded['error']) &&
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isset($decoded['error']['message']) &&
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isset($decoded['error']['code'])) {
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// if we're getting a json encoded error definition, use that instead of the raw response
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// body for improved readability
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$err .= ": ({$decoded['error']['code']}) {$decoded['error']['message']}";
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} else {
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$err .= ": ($code) $body";
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}
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$errors = null;
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// Specific check for APIs which don't return error details, such as Blogger.
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if (isset($decoded['error']) && isset($decoded['error']['errors'])) {
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$errors = $decoded['error']['errors'];
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}
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throw new W3TCG_Google_Service_Exception($err, $code, null, $errors);
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}
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// Only attempt to decode the response, if the response code wasn't (204) 'no content'
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if ($code != '204') {
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$decoded = json_decode($body, true);
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if ($decoded === null || $decoded === "") {
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throw new W3TCG_Google_Service_Exception("Invalid json in service response: $body");
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}
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if ($response->getExpectedClass()) {
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$class = $response->getExpectedClass();
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$decoded = new $class($decoded);
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}
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}
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return $decoded;
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}
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/**
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* Parse/expand request parameters and create a fully qualified
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* request uri.
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* @static
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* @param string $servicePath
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* @param string $restPath
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* @param array $params
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* @return string $requestUrl
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*/
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public static function createRequestUri($servicePath, $restPath, $params)
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{
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$requestUrl = $servicePath . $restPath;
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$uriTemplateVars = array();
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$queryVars = array();
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foreach ($params as $paramName => $paramSpec) {
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if ($paramSpec['type'] == 'boolean') {
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$paramSpec['value'] = ($paramSpec['value']) ? 'true' : 'false';
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}
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if ($paramSpec['location'] == 'path') {
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$uriTemplateVars[$paramName] = $paramSpec['value'];
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} else if ($paramSpec['location'] == 'query') {
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if (isset($paramSpec['repeated']) && is_array($paramSpec['value'])) {
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foreach ($paramSpec['value'] as $value) {
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$queryVars[] = $paramName . '=' . rawurlencode($value);
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}
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} else {
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$queryVars[] = $paramName . '=' . rawurlencode($paramSpec['value']);
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}
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}
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}
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if (count($uriTemplateVars)) {
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$uriTemplateParser = new W3TCG_Google_Utils_URITemplate();
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$requestUrl = $uriTemplateParser->parse($requestUrl, $uriTemplateVars);
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}
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if (count($queryVars)) {
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$requestUrl .= '?' . implode($queryVars, '&');
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}
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return $requestUrl;
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}
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}
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