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<?php |
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namespace Qiniu\Storage; |
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use Qiniu\Config; |
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use Qiniu\Http\Client; |
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use Qiniu\Http\Error; |
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/** |
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* 断点续上传类, 该类主要实现了断点续上传中的分块上传, |
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* 以及相应地创建块和创建文件过程. |
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* |
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* @link http://developer.qiniu.com/docs/v6/api/reference/up/mkblk.html |
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* @link http://developer.qiniu.com/docs/v6/api/reference/up/mkfile.html |
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*/ |
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final class ResumeUploader |
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{ |
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private $upToken; |
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private $key; |
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private $inputStream; |
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private $size; |
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private $params; |
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private $mime; |
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private $contexts; |
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private $host; |
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private $currentUrl; |
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private $config; |
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/** |
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* 上传二进制流到七牛 |
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* |
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* @param $upToken 上传凭证 |
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* @param $key 上传文件名 |
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* @param $inputStream 上传二进制流 |
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* @param $size 上传流的大小 |
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* @param $params 自定义变量 |
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* @param $mime 上传数据的mimeType |
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* |
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* @link http://developer.qiniu.com/docs/v6/api/overview/up/response/vars.html#xvar |
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*/ |
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public function __construct( |
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$upToken, |
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$key, |
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$inputStream, |
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$size, |
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$params, |
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$mime, |
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$config |
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) { |
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$this->upToken = $upToken; |
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$this->key = $key; |
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$this->inputStream = $inputStream; |
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$this->size = $size; |
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$this->params = $params; |
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$this->mime = $mime; |
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$this->contexts = array(); |
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$this->config = $config; |
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list($accessKey, $bucket, $err) = \Qiniu\explodeUpToken($upToken); |
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if ($err != null) { |
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return array(null, $err); |
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} |
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$upHost = $config->getUpHost($accessKey, $bucket); |
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if ($err != null) { |
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throw new \Exception($err->message(), 1); |
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} |
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$this->host = $upHost; |
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} |
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/** |
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* 上传操作 |
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*/ |
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public function upload($fname) |
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{ |
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$uploaded = 0; |
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while ($uploaded < $this->size) { |
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$blockSize = $this->blockSize($uploaded); |
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$data = fread($this->inputStream, $blockSize); |
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if ($data === false) { |
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throw new \Exception("file read failed", 1); |
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} |
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$crc = \Qiniu\crc32_data($data); |
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$response = $this->makeBlock($data, $blockSize); |
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$ret = null; |
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if ($response->ok() && $response->json() != null) { |
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$ret = $response->json(); |
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} |
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if ($response->statusCode < 0) { |
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list($accessKey, $bucket, $err) = \Qiniu\explodeUpToken($this->upToken); |
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if ($err != null) { |
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return array(null, $err); |
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} |
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$upHostBackup = $this->config->getUpBackupHost($accessKey, $bucket); |
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$this->host = $upHostBackup; |
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} |
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if ($response->needRetry() || !isset($ret['crc32']) || $crc != $ret['crc32']) { |
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$response = $this->makeBlock($data, $blockSize); |
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$ret = $response->json(); |
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} |
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if (!$response->ok() || !isset($ret['crc32']) || $crc != $ret['crc32']) { |
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return array(null, new Error($this->currentUrl, $response)); |
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} |
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array_push($this->contexts, $ret['ctx']); |
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$uploaded += $blockSize; |
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} |
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return $this->makeFile($fname); |
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} |
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/** |
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* 创建块 |
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*/ |
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private function makeBlock($block, $blockSize) |
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{ |
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$url = $this->host . '/mkblk/' . $blockSize; |
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return $this->post($url, $block); |
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} |
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private function fileUrl($fname) |
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{ |
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$url = $this->host . '/mkfile/' . $this->size; |
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$url .= '/mimeType/' . \Qiniu\base64_urlSafeEncode($this->mime); |
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if ($this->key != null) { |
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$url .= '/key/' . \Qiniu\base64_urlSafeEncode($this->key); |
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} |
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$url .= '/fname/' . \Qiniu\base64_urlSafeEncode($fname); |
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if (!empty($this->params)) { |
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foreach ($this->params as $key => $value) { |
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$val = \Qiniu\base64_urlSafeEncode($value); |
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$url .= "/$key/$val"; |
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} |
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} |
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return $url; |
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} |
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/** |
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* 创建文件 |
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*/ |
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private function makeFile($fname) |
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{ |
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$url = $this->fileUrl($fname); |
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$body = implode(',', $this->contexts); |
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$response = $this->post($url, $body); |
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if ($response->needRetry()) { |
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$response = $this->post($url, $body); |
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} |
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if (!$response->ok()) { |
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return array(null, new Error($this->currentUrl, $response)); |
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} |
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return array($response->json(), null); |
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} |
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private function post($url, $data) |
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{ |
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$this->currentUrl = $url; |
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$headers = array('Authorization' => 'UpToken ' . $this->upToken); |
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return Client::post($url, $data, $headers); |
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} |
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private function blockSize($uploaded) |
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{ |
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if ($this->size < $uploaded + Config::BLOCK_SIZE) { |
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return $this->size - $uploaded; |
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} |
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return Config::BLOCK_SIZE; |
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} |
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} |
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qiniu /
php-sdk
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