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<?php
/*
* Copyright 2012 Google Inc.
*
* 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.
*/
require_once 'Google/Client.php';
require_once 'Google/Http/Request.php';
require_once 'Google/Http/REST.php';
/**
* @author Chirag Shah <chirags@google.com>
*/
class Google_Http_Batch
{
/** @var string Multipart Boundary. */
private $boundary;
/** @var array service requests to be executed. */
private $requests = array();
/** @var Google_Client */
private $client;
private $expected_classes = array();
private $base_path;
public function __construct(Google_Client $client, $boundary = false)
{
$this->client = $client;
$this->base_path = $this->client->getBasePath();
$this->expected_classes = array();
$boundary = (false == $boundary) ? mt_rand() : $boundary;
$this->boundary = str_replace('"', '', $boundary);
}
public function add(Google_Http_Request $request, $key = false)
{
if (false == $key) {
$key = mt_rand();
}
$this->requests[$key] = $request;
}
public function execute()
{
$body = '';
/** @var Google_Http_Request $req */
foreach ($this->requests as $key => $req) {
$body .= "--{$this->boundary}\n";
$body .= $req->toBatchString($key) . "\n";
$this->expected_classes["response-" . $key] = $req->getExpectedClass();
}
$body = rtrim($body);
$body .= "\n--{$this->boundary}--";
$url = $this->base_path . '/batch';
$httpRequest = new Google_Http_Request($url, 'POST');
$httpRequest->setRequestHeaders(
array('Content-Type' => 'multipart/mixed; boundary=' . $this->boundary)
);
$httpRequest->setPostBody($body);
$response = $this->client->getIo()->makeRequest($httpRequest);
return $this->parseResponse($response);
}
public function parseResponse(Google_Http_Request $response)
{
$contentType = $response->getResponseHeader('content-type');
$contentType = explode(';', $contentType);
$boundary = false;
foreach ($contentType as $part) {
$part = (explode('=', $part, 2));
if (isset($part[0]) && 'boundary' == trim($part[0])) {
$boundary = $part[1];
}
}
$body = $response->getResponseBody();
if ($body) {
$body = str_replace("--$boundary--", "--$boundary", $body);
$parts = explode("--$boundary", $body);
$responses = array();
foreach ($parts as $part) {
$part = trim($part);
if (!empty($part)) {
list($metaHeaders, $part) = explode("\r\n\r\n", $part, 2);
$metaHeaders = $this->client->getIo()->getHttpResponseHeaders($metaHeaders);
$status = substr($part, 0, strpos($part, "\n"));
$status = explode(" ", $status);
$status = $status[1];
list($partHeaders, $partBody) = $this->client->getIo()->ParseHttpResponse($part, false);
$response = new Google_Http_Request("");
$response->setResponseHttpCode($status);
$response->setResponseHeaders($partHeaders);
$response->setResponseBody($partBody);
// Need content id.
$key = $metaHeaders['content-id'];
if (isset($this->expected_classes[$key]) &&
strlen($this->expected_classes[$key]) > 0) {
$class = $this->expected_classes[$key];
$response->setExpectedClass($class);
}
try {
$response = Google_Http_REST::decodeHttpResponse($response);
$responses[$key] = $response;
} catch (Google_Service_Exception $e) {
// Store the exception as the response, so succesful responses
// can be processed.
$responses[$key] = $e;
}
}
}
return $responses;
}
return null;
}
}
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