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<?php |
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/** |
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* Copyright 2012 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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if (!class_exists('Google_Client')) { |
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require_once dirname(__FILE__) . '/../autoload.php'; |
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} |
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|
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/** |
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* Manage large file uploads, which may be media but can be any type |
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* of sizable data. |
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*/ |
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class Google_Http_MediaFileUpload |
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{ |
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const UPLOAD_MEDIA_TYPE = 'media'; |
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const UPLOAD_MULTIPART_TYPE = 'multipart'; |
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const UPLOAD_RESUMABLE_TYPE = 'resumable'; |
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|
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/** @var string $mimeType */ |
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private $mimeType; |
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|
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/** @var string $data */ |
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private $data; |
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|
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/** @var bool $resumable */ |
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private $resumable; |
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|
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/** @var int $chunkSize */ |
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private $chunkSize; |
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|
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/** @var int $size */ |
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private $size; |
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|
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/** @var string $resumeUri */ |
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private $resumeUri; |
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|
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/** @var int $progress */ |
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private $progress; |
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|
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/** @var Google_Client */ |
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private $client; |
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|
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/** @var Google_Http_Request */ |
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private $request; |
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|
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/** @var string */ |
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private $boundary; |
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|
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/** |
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* Result code from last HTTP call |
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* @var int |
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*/ |
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private $httpResultCode; |
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|
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/** |
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* @param $mimeType string |
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* @param $data string The bytes you want to upload. |
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* @param $resumable bool |
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* @param bool $chunkSize File will be uploaded in chunks of this many bytes. |
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* only used if resumable=True |
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*/ |
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public function __construct( |
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Google_Client $client, |
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Google_Http_Request $request, |
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$mimeType, |
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$data, |
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$resumable = false, |
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$chunkSize = false, |
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$boundary = false |
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) { |
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$this->client = $client; |
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$this->request = $request; |
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$this->mimeType = $mimeType; |
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$this->data = $data; |
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$this->size = strlen($this->data); |
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$this->resumable = $resumable; |
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if (!$chunkSize) { |
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$chunkSize = 256 * 1024; |
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} |
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$this->chunkSize = $chunkSize; |
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$this->progress = 0; |
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$this->boundary = $boundary; |
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|
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// Process Media Request |
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$this->process(); |
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} |
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|
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/** |
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* Set the size of the file that is being uploaded. |
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* @param $size - int file size in bytes |
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*/ |
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public function setFileSize($size) |
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{ |
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$this->size = $size; |
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} |
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|
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/** |
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* Return the progress on the upload |
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* @return int progress in bytes uploaded. |
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*/ |
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public function getProgress() |
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{ |
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return $this->progress; |
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} |
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|
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/** |
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* Return the HTTP result code from the last call made. |
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* @return int code |
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*/ |
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public function getHttpResultCode() |
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{ |
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return $this->httpResultCode; |
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} |
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|
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/** |
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* Sends a PUT-Request to google drive and parses the response, |
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* setting the appropiate variables from the response() |
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* |
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* @param Google_Http_Request $httpRequest the Reuqest which will be send |
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* |
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* @return false|mixed false when the upload is unfinished or the decoded http response |
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* |
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*/ |
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private function makePutRequest(Google_Http_Request $httpRequest) |
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{ |
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if ($this->client->getClassConfig("Google_Http_Request", "enable_gzip_for_uploads")) { |
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$httpRequest->enableGzip(); |
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} else { |
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$httpRequest->disableGzip(); |
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} |
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|
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$response = $this->client->getIo()->makeRequest($httpRequest); |
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$response->setExpectedClass($this->request->getExpectedClass()); |
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$code = $response->getResponseHttpCode(); |
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$this->httpResultCode = $code; |
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|
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if (308 == $code) { |
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// Track the amount uploaded. |
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$range = explode('-', $response->getResponseHeader('range')); |
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$this->progress = $range[1] + 1; |
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|
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// Allow for changing upload URLs. |
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$location = $response->getResponseHeader('location'); |
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if ($location) { |
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$this->resumeUri = $location; |
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} |
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|
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// No problems, but upload not complete. |
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return false; |
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} else { |
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return Google_Http_REST::decodeHttpResponse($response, $this->client); |
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} |
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} |
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|
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/** |
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* Send the next part of the file to upload. |
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* @param [$chunk] the next set of bytes to send. If false will used $data passed |
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* at construct time. |
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*/ |
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public function nextChunk($chunk = false) |
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{ |
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if (false == $this->resumeUri) { |
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$this->resumeUri = $this->fetchResumeUri(); |
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} |
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|
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if (false == $chunk) { |
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$chunk = substr($this->data, $this->progress, $this->chunkSize); |
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} |
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$lastBytePos = $this->progress + strlen($chunk) - 1; |
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$headers = array( |
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'content-range' => "bytes $this->progress-$lastBytePos/$this->size", |
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'content-type' => $this->request->getRequestHeader('content-type'), |
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'content-length' => $this->chunkSize, |
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'expect' => '', |
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); |
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|
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$httpRequest = new Google_Http_Request( |
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$this->resumeUri, |
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'PUT', |
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$headers, |
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$chunk |
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); |
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return $this->makePutRequest($httpRequest); |
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} |
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|
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/** |
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* Resume a previously unfinished upload |
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* @param $resumeUri the resume-URI of the unfinished, resumable upload. |
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*/ |
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public function resume($resumeUri) |
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{ |
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$this->resumeUri = $resumeUri; |
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$headers = array( |
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'content-range' => "bytes */$this->size", |
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'content-length' => 0, |
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); |
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$httpRequest = new Google_Http_Request( |
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$this->resumeUri, |
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'PUT', |
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$headers |
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); |
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return $this->makePutRequest($httpRequest); |
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} |
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|
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/** |
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* @return array|bool |
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* @visible for testing |
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*/ |
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private function process() |
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{ |
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$postBody = false; |
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$contentType = false; |
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|
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$meta = $this->request->getPostBody(); |
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$meta = is_string($meta) ? json_decode($meta, true) : $meta; |
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|
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$uploadType = $this->getUploadType($meta); |
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$this->request->setQueryParam('uploadType', $uploadType); |
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$this->transformToUploadUrl(); |
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$mimeType = $this->mimeType ? |
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$this->mimeType : |
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$this->request->getRequestHeader('content-type'); |
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|
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if (self::UPLOAD_RESUMABLE_TYPE == $uploadType) { |
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$contentType = $mimeType; |
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$postBody = is_string($meta) ? $meta : json_encode($meta); |
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} else if (self::UPLOAD_MEDIA_TYPE == $uploadType) { |
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$contentType = $mimeType; |
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$postBody = $this->data; |
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} else if (self::UPLOAD_MULTIPART_TYPE == $uploadType) { |
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// This is a multipart/related upload. |
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$boundary = $this->boundary ? $this->boundary : mt_rand(); |
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$boundary = str_replace('"', '', $boundary); |
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$contentType = 'multipart/related; boundary=' . $boundary; |
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$related = "--$boundary\r\n"; |
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$related .= "Content-Type: application/json; charset=UTF-8\r\n"; |
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$related .= "\r\n" . json_encode($meta) . "\r\n"; |
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$related .= "--$boundary\r\n"; |
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$related .= "Content-Type: $mimeType\r\n"; |
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$related .= "Content-Transfer-Encoding: base64\r\n"; |
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$related .= "\r\n" . base64_encode($this->data) . "\r\n"; |
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$related .= "--$boundary--"; |
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$postBody = $related; |
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} |
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|
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$this->request->setPostBody($postBody); |
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|
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if (isset($contentType) && $contentType) { |
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$contentTypeHeader['content-type'] = $contentType; |
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$this->request->setRequestHeaders($contentTypeHeader); |
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} |
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} |
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|
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private function transformToUploadUrl() |
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{ |
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$base = $this->request->getBaseComponent(); |
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$this->request->setBaseComponent($base . '/upload'); |
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} |
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|
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/** |
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* Valid upload types: |
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* - resumable (UPLOAD_RESUMABLE_TYPE) |
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* - media (UPLOAD_MEDIA_TYPE) |
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* - multipart (UPLOAD_MULTIPART_TYPE) |
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* @param $meta |
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* @return string |
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* @visible for testing |
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*/ |
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public function getUploadType($meta) |
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{ |
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if ($this->resumable) { |
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return self::UPLOAD_RESUMABLE_TYPE; |
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} |
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|
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if (false == $meta && $this->data) { |
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return self::UPLOAD_MEDIA_TYPE; |
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} |
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|
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return self::UPLOAD_MULTIPART_TYPE; |
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} |
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|
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public function getResumeUri() |
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{ |
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return ( $this->resumeUri !== null ? $this->resumeUri : $this->fetchResumeUri() ); |
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} |
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|
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private function fetchResumeUri() |
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{ |
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$result = null; |
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$body = $this->request->getPostBody(); |
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if ($body) { |
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$headers = array( |
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'content-type' => 'application/json; charset=UTF-8', |
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'content-length' => Google_Utils::getStrLen($body), |
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'x-upload-content-type' => $this->mimeType, |
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'x-upload-content-length' => $this->size, |
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'expect' => '', |
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); |
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$this->request->setRequestHeaders($headers); |
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} |
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|
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$response = $this->client->getIo()->makeRequest($this->request); |
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$location = $response->getResponseHeader('location'); |
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$code = $response->getResponseHttpCode(); |
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|
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if (200 == $code && true == $location) { |
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return $location; |
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} |
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$message = $code; |
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$body = @json_decode($response->getResponseBody()); |
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if (!empty($body->error->errors) ) { |
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$message .= ': '; |
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foreach ($body->error->errors as $error) { |
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$message .= "{$error->domain}, {$error->message};"; |
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} |
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$message = rtrim($message, ';'); |
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} |
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|
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$error = "Failed to start the resumable upload (HTTP {$message})"; |
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$this->client->getLogger()->error($error); |
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throw new Google_Exception($error); |
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} |
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|
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public function setChunkSize($chunkSize) |
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{ |
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$this->chunkSize = $chunkSize; |
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} |
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} |
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|
