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<?php
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namespace app\common\service\storage\engine;
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use Exception;
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use Qcloud\Cos\Client;
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use QCloud\COSSTS\Sts;
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/**
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* 腾讯云存储引擎 (COS)
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* Class Qiniu
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* @package app\common\library\storage\engine
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*/
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class Qcloud extends Server
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{
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private $config;
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private $cosClient;
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/**
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* 构造方法
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* Qcloud constructor.
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* @param $config
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*/
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public function __construct($config)
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{
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parent::__construct();
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$this->config = $config;
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// 创建COS控制类
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$this->createCosClient();
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}
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/**
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* 创建COS控制类
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*/
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private function createCosClient()
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{
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$this->cosClient = new Client([
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'region' => $this->config['region'],
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'credentials' => [
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'secretId' => $this->config['access_key'],
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'secretKey' => $this->config['secret_key'],
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],
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]);
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}
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/**
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* 执行上传
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* @param $save_dir (保存路径)
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* @return bool|mixed
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*/
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public function upload($save_dir)
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{
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// 上传文件
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// putObject(上传接口，最大支持上传5G文件)
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try {
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$result = $this->cosClient->putObject([
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'Bucket' => $this->config['bucket'],
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'Key' => $save_dir . '/' . $this->fileName,
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'Body' => fopen($this->getRealPath(), 'rb')
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]);
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return true;
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} catch (Exception $e) {
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$this->error = $e->getMessage();
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return false;
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}
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}
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/**
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* notes: 抓取远程资源(最大支持上传5G文件)
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* @param $url
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* @param null $key
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* @author 张无忌(2021/3/2 14:36)
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* @return mixed|void
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*/
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public function fetch($url, $key=null) {
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try {
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$this->cosClient->putObject([
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'Bucket' => $this->config['bucket'],
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'Key' => $key,
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'Body' => fopen($url, 'rb')
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]);
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return true;
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} catch (Exception $e) {
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$this->error = $e->getMessage();
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return false;
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}
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}
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/**
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* 删除文件
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* @param $fileName
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* @return bool|mixed
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*/
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public function delete($fileName)
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{
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try {
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$this->cosClient->deleteObject(array(
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'Bucket' => $this->config['bucket'],
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'Key' => $fileName
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));
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return true;
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} catch (Exception $e) {
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$this->error = $e->getMessage();
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return false;
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}
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}
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/**
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* 返回文件路径
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* @return mixed
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*/
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public function getFileName()
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{
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return $this->fileName;
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}
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/**
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* @notes 获取 STS 临时凭证（用于浏览器直传）
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* @param string $keyPrefix 资源前缀，如 uploads/video/20260508/
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* @param int $maxSizeBytes 单文件大小上限（字节）
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* @param int $durationSeconds 凭证有效期（秒）
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* @return array {credentials, expiredTime, requestId}
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* @throws Exception
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*/
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public function getStsCredentials(string $keyPrefix, int $maxSizeBytes, int $durationSeconds = 1800): array
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{
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$bucket = $this->config['bucket'];
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// bucket 形如 likeadmin-1300000000，appId 即末段
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$appId = '';
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if (strpos($bucket, '-') !== false) {
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$parts = explode('-', $bucket);
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$appId = end($parts);
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}
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if (!$appId || !ctype_digit($appId)) {
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throw new Exception('腾讯云 COS bucket 名称不合法，无法解析 appId（期望形如 name-1300000000）');
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}
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$shortBucket = substr($bucket, 0, strrpos($bucket, '-'));
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$region = $this->config['region'];
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$prefix = ltrim($keyPrefix, '/');
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if ($prefix === '' || substr($prefix, -1) !== '/') {
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$prefix = $prefix . '/';
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}
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$duration = max(900, min($durationSeconds, 7200));
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// 自行构造 policy：对象级写动作收紧 + bucket 级 ListMultipartUploads（cos-js-sdk-v5 续传探测必需）
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$objectArn = sprintf('qcs::cos:%s:uid/%s:%s/%s*', $region, $appId, $bucket, $prefix);
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$bucketArn = sprintf('qcs::cos:%s:uid/%s:%s/*', $region, $appId, $bucket);
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$policy = [
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'version' => '2.0',
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'statement' => [
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[
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'effect' => 'allow',
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'action' => [
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'name/cos:PostObject',
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'name/cos:PutObject',
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'name/cos:InitiateMultipartUpload',
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'name/cos:UploadPart',
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'name/cos:CompleteMultipartUpload',
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'name/cos:AbortMultipartUpload',
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'name/cos:ListParts',
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],
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'resource' => [$objectArn],
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'condition' => [
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'numeric_less_than_equal' => [
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'cos:content-length' => $maxSizeBytes,
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],
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],
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],
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[
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// ListMultipartUploads 是 bucket 级操作，无法用对象级 ARN 命中
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'effect' => 'allow',
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'action' => ['name/cos:ListMultipartUploads'],
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'resource' => [$bucketArn],
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],
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],
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];
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$config = [
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'url' => 'https://sts.tencentcloudapi.com/',
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'domain' => 'sts.tencentcloudapi.com',
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'proxy' => '',
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'secretId' => $this->config['access_key'],
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'secretKey' => $this->config['secret_key'],
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'bucket' => $bucket,
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'region' => $region,
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'durationSeconds' => $duration,
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'policy' => $policy,
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];
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$sts = new Sts();
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$result = $sts->getTempKeys($config);
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if (!is_array($result) || empty($result['credentials'])) {
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throw new Exception('获取 STS 临时凭证失败');
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}
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return [
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'credentials' => [
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'tmpSecretId' => $result['credentials']['tmpSecretId'] ?? '',
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'tmpSecretKey' => $result['credentials']['tmpSecretKey'] ?? '',
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'sessionToken' => $result['credentials']['sessionToken'] ?? '',
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],
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'expiredTime' => (int)($result['expiredTime'] ?? (time() + $duration)),
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'startTime' => (int)($result['startTime'] ?? time()),
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'bucket' => $bucket,
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'shortBucket' => $shortBucket,
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'region' => $region,
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'appId' => $appId,
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'host' => sprintf('https://%s.cos.%s.myqcloud.com', $bucket, $region),
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];
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}
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/**
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* @notes HEAD 校验对象是否真实存在并返回 size / contentType
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* @param string $key
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* @return array|false
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*/
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public function headObject(string $key)
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{
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try {
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$result = $this->cosClient->headObject([
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'Bucket' => $this->config['bucket'],
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'Key' => $key,
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]);
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return [
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'size' => (int)($result['ContentLength'] ?? 0),
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'content_type' => (string)($result['ContentType'] ?? ''),
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'etag' => trim((string)($result['ETag'] ?? ''), '"'),
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];
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} catch (Exception $e) {
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$this->error = $e->getMessage();
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return false;
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}
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}
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}
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