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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.
*/
use GuzzleHttp\Psr7;
use GuzzleHttp\Psr7\Request;
use GuzzleHttp\Psr7\Uri;
use Psr\Http\Message\RequestInterface;
/**
* Manage large file uploads, which may be media but can be any type
* of sizable data.
*/
class Google_Http_MediaFileUpload
{
const UPLOAD_MEDIA_TYPE = 'media';
const UPLOAD_MULTIPART_TYPE = 'multipart';
const UPLOAD_RESUMABLE_TYPE = 'resumable';
/** @var string $mimeType */
private $mimeType;
/** @var string $data */
private $data;
/** @var bool $resumable */
private $resumable;
/** @var int $chunkSize */
private $chunkSize;
/** @var int $size */
private $size;
/** @var string $resumeUri */
private $resumeUri;
/** @var int $progress */
private $progress;
/** @var Google_Client */
private $client;
/** @var Psr\Http\Message\RequestInterface */
private $request;
/** @var string */
private $boundary;
/**
* Result code from last HTTP call
* @var int
*/
private $httpResultCode;
/**
* @param Google_Client $client
* @param RequestInterface $request
* @param string $mimeType
* @param string $data The bytes you want to upload.
* @param bool $resumable
* @param bool $chunkSize File will be uploaded in chunks of this many bytes.
* only used if resumable=True
*/
public function __construct(
Google_Client $client,
RequestInterface $request,
$mimeType,
$data,
$resumable = false,
$chunkSize = false
) {
$this->client = $client;
$this->request = $request;
$this->mimeType = $mimeType;
$this->data = $data;
$this->resumable = $resumable;
$this->chunkSize = $chunkSize;
$this->progress = 0;
$this->process();
}
/**
* Set the size of the file that is being uploaded.
* @param $size - int file size in bytes
*/
public function setFileSize($size)
{
$this->size = $size;
}
/**
* Return the progress on the upload
* @return int progress in bytes uploaded.
*/
public function getProgress()
{
return $this->progress;
}
/**
* Send the next part of the file to upload.
* @param string|bool $chunk Optional. The next set of bytes to send. If false will
* use $data passed at construct time.
*/
public function nextChunk($chunk = false)
{
$resumeUri = $this->getResumeUri();
if (false == $chunk) {
$chunk = substr($this->data, $this->progress, $this->chunkSize);
}
$lastBytePos = $this->progress + strlen($chunk) - 1;
$headers = array(
'content-range' => "bytes $this->progress-$lastBytePos/$this->size",
'content-length' => strlen($chunk),
'expect' => '',
);
$request = new Request(
'PUT',
$resumeUri,
$headers,
Psr7\stream_for($chunk)
);
return $this->makePutRequest($request);
}
/**
* Return the HTTP result code from the last call made.
* @return int code
*/
public function getHttpResultCode()
{
return $this->httpResultCode;
}
/**
* Sends a PUT-Request to google drive and parses the response,
* setting the appropiate variables from the response()
*
* @param Google_Http_Request $httpRequest the Reuqest which will be send
*
* @return false|mixed false when the upload is unfinished or the decoded http response
*
*/
private function makePutRequest(RequestInterface $request)
{
$response = $this->client->execute($request);
$this->httpResultCode = $response->getStatusCode();
if (308 == $this->httpResultCode) {
// Track the amount uploaded.
$range = $response->getHeaderLine('range');
if ($range) {
$range_array = explode('-', $range);
$this->progress = $range_array[1] + 1;
}
// Allow for changing upload URLs.
$location = $response->getHeaderLine('location');
if ($location) {
$this->resumeUri = $location;
}
// No problems, but upload not complete.
return false;
}
return Google_Http_REST::decodeHttpResponse($response, $this->request);
}
/**
* Resume a previously unfinished upload
* @param $resumeUri the resume-URI of the unfinished, resumable upload.
*/
public function resume($resumeUri)
{
$this->resumeUri = $resumeUri;
$headers = array(
'content-range' => "bytes */$this->size",
'content-length' => 0,
);
$httpRequest = new Request(
'PUT',
$this->resumeUri,
$headers
);
return $this->makePutRequest($httpRequest);
}
/**
* @return Psr\Http\Message\RequestInterface $request
* @visible for testing
*/
private function process()
{
$this->transformToUploadUrl();
$request = $this->request;
$postBody = '';
$contentType = false;
$meta = (string) $request->getBody();
$meta = is_string($meta) ? json_decode($meta, true) : $meta;
$uploadType = $this->getUploadType($meta);
$request = $request->withUri(
Uri::withQueryValue($request->getUri(), 'uploadType', $uploadType)
);
$mimeType = $this->mimeType ?: $request->getHeaderLine('content-type');
if (self::UPLOAD_RESUMABLE_TYPE == $uploadType) {
$contentType = $mimeType;
$postBody = is_string($meta) ? $meta : json_encode($meta);
} else if (self::UPLOAD_MEDIA_TYPE == $uploadType) {
$contentType = $mimeType;
$postBody = $this->data;
} else if (self::UPLOAD_MULTIPART_TYPE == $uploadType) {
// This is a multipart/related upload.
$boundary = $this->boundary ?: mt_rand();
$boundary = str_replace('"', '', $boundary);
$contentType = 'multipart/related; boundary=' . $boundary;
$related = "--$boundary\r\n";
$related .= "Content-Type: application/json; charset=UTF-8\r\n";
$related .= "\r\n" . json_encode($meta) . "\r\n";
$related .= "--$boundary\r\n";
$related .= "Content-Type: $mimeType\r\n";
$related .= "Content-Transfer-Encoding: base64\r\n";
$related .= "\r\n" . base64_encode($this->data) . "\r\n";
$related .= "--$boundary--";
$postBody = $related;
}
$request = $request->withBody(Psr7\stream_for($postBody));
if (isset($contentType) && $contentType) {
$request = $request->withHeader('content-type', $contentType);
}
return $this->request = $request;
}
/**
* Valid upload types:
* - resumable (UPLOAD_RESUMABLE_TYPE)
* - media (UPLOAD_MEDIA_TYPE)
* - multipart (UPLOAD_MULTIPART_TYPE)
* @param $meta
* @return string
* @visible for testing
*/
public function getUploadType($meta)
{
if ($this->resumable) {
return self::UPLOAD_RESUMABLE_TYPE;
}
if (false == $meta && $this->data) {
return self::UPLOAD_MEDIA_TYPE;
}
return self::UPLOAD_MULTIPART_TYPE;
}
public function getResumeUri()
{
if (null === $this->resumeUri) {
$this->resumeUri = $this->fetchResumeUri();
}
return $this->resumeUri;
}
private function fetchResumeUri()
{
$body = $this->request->getBody();
if ($body) {
$headers = array(
'content-type' => 'application/json; charset=UTF-8',
'content-length' => $body->getSize(),
'x-upload-content-type' => $this->mimeType,
'x-upload-content-length' => $this->size,
'expect' => '',
);
foreach ($headers as $key => $value) {
$this->request = $this->request->withHeader($key, $value);
}
}
$response = $this->client->execute($this->request, false);
$location = $response->getHeaderLine('location');
$code = $response->getStatusCode();
if (200 == $code && true == $location) {
return $location;
}
$message = $code;
$body = json_decode((string) $this->request->getBody(), true);
if (isset($body['error']['errors'])) {
$message .= ': ';
foreach ($body['error']['errors'] as $error) {
$message .= "{$error['domain']}, {$error['message']};";
}
$message = rtrim($message, ';');
}
$error = "Failed to start the resumable upload (HTTP {$message})";
$this->client->getLogger()->error($error);
throw new Google_Exception($error);
}
private function transformToUploadUrl()
{
$parts = parse_url((string) $this->request->getUri());
if (!isset($parts['path'])) {
$parts['path'] = '';
}
$parts['path'] = '/upload' . $parts['path'];
$uri = Uri::fromParts($parts);
$this->request = $this->request->withUri($uri);
}
public function setChunkSize($chunkSize)
{
$this->chunkSize = $chunkSize;
}
public function getRequest()
{
return $this->request;
}
}
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