520 lines
20 KiB
Go
520 lines
20 KiB
Go
package storage
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import (
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"bytes"
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"context"
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"crypto/hmac"
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"crypto/sha1"
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"encoding/base64"
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"errors"
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"fmt"
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"github.com/aws/aws-sdk-go/aws/credentials"
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awsv4 "github.com/aws/aws-sdk-go/aws/signer/v4"
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qiniuAuth "github.com/qiniu/go-sdk/v7/auth"
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qiniuStorage "github.com/qiniu/go-sdk/v7/storage"
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cos "github.com/tencentyun/cos-go-sdk-v5"
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"infinite-canvas/backend/internal/kernel"
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"infinite-canvas/backend/internal/outbound"
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"io"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"time"
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)
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func PutOSSObject(setting Settings, objectKey string, mimeType string, size int64, body io.Reader) (string, error) {
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setting = NormalizeSettings(setting)
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if setting.Provider == tencentCOSProvider {
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return PutCOSObject(setting, objectKey, mimeType, size, body)
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}
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if setting.Provider == qiniuKodoProvider {
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return PutQiniuObject(setting, objectKey, mimeType, size, body)
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}
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if setting.Provider == s3Provider {
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return PutS3Object(setting, objectKey, mimeType, size, body)
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}
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return PutAliyunOSSObject(setting, objectKey, mimeType, size, body)
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}
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// 阿里云 OSS 继续沿用原有 V1 签名和请求路径，避免已有部署行为发生变化。
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func PutAliyunOSSObject(setting Settings, objectKey string, mimeType string, size int64, body io.Reader) (string, error) {
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if mimeType == "" {
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mimeType = "application/octet-stream"
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}
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req, err := NewOSSRequest(http.MethodPut, setting, objectKey, mimeType, body)
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if err != nil {
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return "", err
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}
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if size > 0 {
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req.ContentLength = size
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}
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resp, err := outbound.OutboundHTTPClient(2 * time.Minute).Do(req)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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if resp.StatusCode < 200 || resp.StatusCode >= 300 {
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detail, _ := io.ReadAll(io.LimitReader(resp.Body, 512))
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return "", fmt.Errorf("OSS 上传失败：%s %s", resp.Status, strings.TrimSpace(string(detail)))
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}
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return strings.Trim(resp.Header.Get("ETag"), `"`), nil
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}
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type ObjectStream struct {
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Body io.ReadCloser
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StatusCode int
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ContentLength int64
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ContentRange string
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AcceptRanges string
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}
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func GetOSSObjectRange(setting Settings, objectKey string, rangeHeader string) (*ObjectStream, error) {
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setting = NormalizeSettings(setting)
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if setting.Provider == s3Provider {
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return GetS3ObjectRange(setting, objectKey, rangeHeader)
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}
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if setting.Provider == tencentCOSProvider {
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return GetCOSObjectRange(setting, objectKey, rangeHeader)
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}
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if setting.Provider == qiniuKodoProvider {
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return GetQiniuObjectRange(setting, objectKey, rangeHeader)
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}
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return GetAliyunOSSObjectRange(setting, objectKey, rangeHeader)
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}
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func GetAliyunOSSObjectRange(setting Settings, objectKey string, rangeHeader string) (*ObjectStream, error) {
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req, err := NewOSSRequest(http.MethodGet, setting, objectKey, "", nil)
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if err != nil {
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return nil, err
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}
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if rangeHeader != "" {
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req.Header.Set("Range", rangeHeader)
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}
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resp, err := outbound.OutboundHTTPClient(2 * time.Minute).Do(req)
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if err != nil {
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return nil, err
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}
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if (resp.StatusCode < 200 || resp.StatusCode >= 300) && resp.StatusCode != http.StatusRequestedRangeNotSatisfiable {
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defer resp.Body.Close()
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detail, _ := io.ReadAll(io.LimitReader(resp.Body, 512))
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return nil, fmt.Errorf("OSS 读取失败：%s %s", resp.Status, strings.TrimSpace(string(detail)))
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}
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return &ObjectStream{Body: resp.Body, StatusCode: resp.StatusCode, ContentLength: resp.ContentLength, ContentRange: resp.Header.Get("Content-Range"), AcceptRanges: kernel.FirstNonEmpty(resp.Header.Get("Accept-Ranges"), "bytes")}, nil
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}
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func SignedOSSObjectURL(setting Settings, objectKey string, expiresAt time.Time) (string, error) {
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setting = NormalizeSettings(setting)
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if setting.Provider == s3Provider {
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return SignedS3ObjectURL(setting, objectKey, expiresAt)
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}
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if setting.Provider == qiniuKodoProvider {
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return SignedQiniuS3ObjectURL(setting, objectKey, expiresAt)
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}
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if setting.Provider == tencentCOSProvider {
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return SignedCOSObjectURL(setting, objectKey, expiresAt)
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}
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return SignedAliyunOSSObjectURL(setting, objectKey, expiresAt)
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}
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func SignedAliyunOSSObjectURL(setting Settings, objectKey string, expiresAt time.Time) (string, error) {
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baseURL, err := OssBucketBaseURL(setting)
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if err != nil {
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return "", err
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}
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if strings.TrimSpace(setting.AccessKeyID) == "" || strings.TrimSpace(setting.AccessKeySecret) == "" {
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return "", errors.New("OSS 访问密钥不可用")
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}
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objectKey = strings.TrimLeft(strings.TrimSpace(objectKey), "/")
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if objectKey == "" {
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return "", errors.New("OSS 对象路径为空")
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}
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baseURL.Path = strings.TrimRight(baseURL.Path, "/") + "/" + strings.TrimLeft(objectKey, "/")
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expires := strconv.FormatInt(expiresAt.UTC().Unix(), 10)
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stringToSign := strings.Join([]string{http.MethodGet, "", "", expires, "/" + setting.Bucket + "/" + objectKey}, "\n")
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mac := hmac.New(sha1.New, []byte(setting.AccessKeySecret))
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_, _ = mac.Write([]byte(stringToSign))
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query := baseURL.Query()
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query.Set("OSSAccessKeyId", setting.AccessKeyID)
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query.Set("Expires", expires)
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query.Set("Signature", base64.StdEncoding.EncodeToString(mac.Sum(nil)))
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baseURL.RawQuery = query.Encode()
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return baseURL.String(), nil
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}
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func PutCOSObject(setting Settings, objectKey string, mimeType string, size int64, body io.Reader) (string, error) {
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client, err := NewCOSClient(setting, 2*time.Minute)
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if err != nil {
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return "", err
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}
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if mimeType == "" {
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mimeType = "application/octet-stream"
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}
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options := &cos.ObjectPutOptions{ObjectPutHeaderOptions: &cos.ObjectPutHeaderOptions{ContentType: mimeType, ContentLength: size}}
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resp, err := client.Object.Put(context.Background(), objectKey, body, options)
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if err != nil {
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return "", fmt.Errorf("COS 上传失败：%w", err)
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}
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return strings.Trim(resp.Header.Get("ETag"), `"`), nil
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}
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func PutQiniuObject(setting Settings, objectKey string, mimeType string, size int64, body io.Reader) (string, error) {
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if setting.AccessKeyID == "" || setting.AccessKeySecret == "" {
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return "", errors.New("七牛云 Kodo 访问密钥不可用")
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}
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if setting.Bucket == "" || objectKey == "" {
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return "", errors.New("七牛云 Kodo Bucket 或对象路径为空")
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}
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config := qiniuStorage.NewConfig()
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config.Region = QiniuRegion(setting.Region)
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config.UpHost = strings.TrimRight(setting.Endpoint, "/")
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uploader := qiniuStorage.NewFormUploader(config)
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policy := qiniuStorage.PutPolicy{Scope: setting.Bucket + ":" + strings.TrimLeft(objectKey, "/"), Expires: 3600}
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token := policy.UploadToken(qiniuAuth.New(setting.AccessKeyID, setting.AccessKeySecret))
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ret := qiniuStorage.PutRet{}
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extra := &qiniuStorage.PutExtra{MimeType: mimeType}
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if size < 0 {
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size = 0
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}
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if err := uploader.Put(context.Background(), &ret, token, strings.TrimLeft(objectKey, "/"), body, size, extra); err != nil {
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return "", fmt.Errorf("七牛云 Kodo 上传失败：%w", err)
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}
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return ret.Hash, nil
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}
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func GetCOSObjectRange(setting Settings, objectKey string, rangeHeader string) (*ObjectStream, error) {
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client, err := NewCOSClient(setting, 2*time.Minute)
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if err != nil {
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return nil, err
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}
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options := &cos.ObjectGetOptions{Range: rangeHeader}
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resp, err := client.Object.Get(context.Background(), objectKey, options)
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if err != nil {
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if resp != nil && resp.StatusCode == http.StatusRequestedRangeNotSatisfiable {
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return &ObjectStream{Body: io.NopCloser(bytes.NewReader(nil)), StatusCode: resp.StatusCode, ContentRange: resp.Header.Get("Content-Range"), AcceptRanges: kernel.FirstNonEmpty(resp.Header.Get("Accept-Ranges"), "bytes")}, nil
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}
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return nil, fmt.Errorf("COS 读取失败：%w", err)
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}
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return &ObjectStream{Body: resp.Body, StatusCode: resp.StatusCode, ContentLength: resp.ContentLength, ContentRange: resp.Header.Get("Content-Range"), AcceptRanges: kernel.FirstNonEmpty(resp.Header.Get("Accept-Ranges"), "bytes")}, nil
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}
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func GetQiniuObjectRange(setting Settings, objectKey string, rangeHeader string) (*ObjectStream, error) {
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signedURL, err := SignedQiniuS3ObjectURL(setting, objectKey, time.Now().Add(resourceAccessURLTTL))
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if err != nil {
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return nil, err
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}
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req, err := http.NewRequest(http.MethodGet, signedURL, nil)
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if err != nil {
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return nil, err
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}
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if rangeHeader != "" {
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req.Header.Set("Range", rangeHeader)
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}
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outbound.ApplyDefaultOutboundHeaders(req)
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resp, err := outbound.OutboundHTTPClient(2 * time.Minute).Do(req)
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if err != nil {
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return nil, fmt.Errorf("七牛云 Kodo 读取失败：%w", err)
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}
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if (resp.StatusCode < 200 || resp.StatusCode >= 300) && resp.StatusCode != http.StatusRequestedRangeNotSatisfiable {
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defer resp.Body.Close()
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detail, _ := io.ReadAll(io.LimitReader(resp.Body, 512))
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return nil, fmt.Errorf("七牛云 Kodo 读取失败：%s %s", resp.Status, strings.TrimSpace(string(detail)))
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}
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return &ObjectStream{Body: resp.Body, StatusCode: resp.StatusCode, ContentLength: resp.ContentLength, ContentRange: resp.Header.Get("Content-Range"), AcceptRanges: kernel.FirstNonEmpty(resp.Header.Get("Accept-Ranges"), "bytes")}, nil
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}
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func SignedCOSObjectURL(setting Settings, objectKey string, expiresAt time.Time) (string, error) {
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if strings.TrimSpace(setting.AccessKeyID) == "" || strings.TrimSpace(setting.AccessKeySecret) == "" {
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return "", errors.New("COS 访问密钥不可用")
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}
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objectKey = strings.TrimLeft(strings.TrimSpace(objectKey), "/")
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if objectKey == "" {
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return "", errors.New("COS 对象路径为空")
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}
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expires := time.Until(expiresAt)
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if expires <= 0 {
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return "", errors.New("COS 签名有效期必须晚于当前时间")
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}
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client, err := NewCOSClient(setting, 2*time.Minute)
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if err != nil {
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return "", err
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}
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signedURL, err := client.Object.GetPresignedURL(context.Background(), http.MethodGet, objectKey, setting.AccessKeyID, setting.AccessKeySecret, expires, nil)
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if err != nil {
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return "", err
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}
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return signedURL.String(), nil
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}
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func SignedQiniuObjectURL(setting Settings, objectKey string, expiresAt time.Time) (string, error) {
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if setting.AccessKeyID == "" || setting.AccessKeySecret == "" {
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return "", errors.New("七牛云 Kodo 访问密钥不可用")
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}
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objectKey = strings.TrimLeft(strings.TrimSpace(objectKey), "/")
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if objectKey == "" {
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return "", errors.New("七牛云 Kodo 对象路径为空")
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}
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deadline := expiresAt.Unix()
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if deadline <= time.Now().Unix() {
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return "", errors.New("七牛云 Kodo 签名有效期必须晚于当前时间")
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}
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if setting.CDNBaseURL == "" {
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return SignedQiniuS3ObjectURL(setting, objectKey, expiresAt)
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}
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mac := qiniuAuth.New(setting.AccessKeyID, setting.AccessKeySecret)
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return qiniuStorage.MakePrivateURLv2(mac, strings.TrimRight(setting.CDNBaseURL, "/"), objectKey, deadline), nil
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}
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// SignedQiniuS3ObjectURL 用七牛兼容 S3 的 AWS Signature V4 访问私有空间。
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// 没有绑定域名时，浏览器不直接访问该地址，而是由后端代理读取并返回文件。
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func SignedQiniuS3ObjectURL(setting Settings, objectKey string, expiresAt time.Time) (string, error) {
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region := QiniuS3Region(setting)
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if region == "" {
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return "", errors.New("七牛云 Kodo S3 Region 不可用")
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}
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baseURL := &url.URL{Scheme: "https", Host: setting.Bucket + ".s3." + region + ".qiniucs.com"}
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// 保留对象键的原始路径，让 url.URL 和 AWS signer 只做一次 RFC 3986 转义。
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baseURL.Path = "/" + objectKey
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req, err := http.NewRequest(http.MethodGet, baseURL.String(), nil)
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if err != nil {
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return "", err
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}
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credentialsValue := credentials.NewStaticCredentials(setting.AccessKeyID, setting.AccessKeySecret, "")
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signer := awsv4.NewSigner(credentialsValue)
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if _, err := signer.Presign(req, nil, "s3", region, time.Until(expiresAt), time.Now().UTC()); err != nil {
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return "", fmt.Errorf("七牛云 Kodo S3 签名失败：%w", err)
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}
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return req.URL.String(), nil
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}
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func QiniuS3Region(setting Settings) string {
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region := strings.ToLower(strings.TrimSpace(setting.Region))
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if region == "" {
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endpoint := strings.ToLower(setting.Endpoint)
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for _, candidate := range []string{"z0", "z1", "z2", "na0", "as0", "cn-east-1", "cn-north-1", "cn-south-1", "us-north-1", "ap-southeast-1", "cn-east-2"} {
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if strings.Contains(endpoint, candidate) {
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region = candidate
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break
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}
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}
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}
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switch region {
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case "", "z0", "cn-east-1":
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return "cn-east-1"
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case "z1", "cn-north-1":
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return "cn-north-1"
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case "z2", "cn-south-1":
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return "cn-south-1"
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case "na0", "us-north-1":
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return "us-north-1"
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case "as0", "ap-southeast-1":
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return "ap-southeast-1"
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case "cn-east-2", "zhejiang2":
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return "cn-east-2"
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default:
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return ""
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}
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}
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func QiniuRegion(region string) *qiniuStorage.Region {
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switch strings.ToLower(strings.TrimSpace(region)) {
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case "z1", "cn-north-1":
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return &qiniuStorage.ZoneHuabei
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case "z2", "cn-south-1":
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return &qiniuStorage.ZoneHuanan
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case "na0", "us-north-1":
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return &qiniuStorage.ZoneBeimei
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case "as0", "ap-southeast-1":
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return &qiniuStorage.ZoneXinjiapo
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case "cn-east-2", "zhejiang2":
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return &qiniuStorage.ZoneHuadongZheJiang2
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default:
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return &qiniuStorage.ZoneHuadong
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}
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}
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func NewCOSClient(setting Settings, timeout time.Duration) (*cos.Client, error) {
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bucketURL, err := CosBucketBaseURL(setting)
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if err != nil {
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return nil, err
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}
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httpClient := outbound.OutboundHTTPClient(timeout)
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httpClient.Transport = &cos.AuthorizationTransport{SecretID: setting.AccessKeyID, SecretKey: setting.AccessKeySecret, Transport: httpClient.Transport}
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return cos.NewClient(&cos.BaseURL{BucketURL: bucketURL}, httpClient), nil
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}
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func CosBucketBaseURL(setting Settings) (*url.URL, error) {
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setting = NormalizeSettings(setting)
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endpoint := strings.TrimRight(setting.Endpoint, "/")
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if endpoint == "" {
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return nil, errors.New("COS Endpoint 为空")
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}
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if !strings.Contains(endpoint, "://") {
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endpoint = "https://" + endpoint
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}
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parsed, err := url.Parse(endpoint)
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if err != nil {
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return nil, err
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}
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if parsed.Host == "" || parsed.User != nil || parsed.RawQuery != "" || parsed.Fragment != "" || strings.Trim(parsed.Path, "/") != "" {
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return nil, errors.New("COS Endpoint 格式不正确")
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}
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if setting.Bucket == "" {
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return nil, errors.New("COS Bucket 为空")
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}
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host := strings.ToLower(parsed.Hostname())
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if strings.HasSuffix(host, ".myqcloud.com") || strings.HasSuffix(host, ".tencentcos.cn") {
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if strings.HasPrefix(host, "cos.") || strings.HasPrefix(host, "cos-internal.") || strings.HasPrefix(host, "cos-website.") {
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parsed.Host = setting.Bucket + "." + parsed.Host
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} else if !strings.HasPrefix(host, strings.ToLower(setting.Bucket)+".") {
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return nil, errors.New("COS Endpoint 中的 Bucket 与配置不一致")
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}
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}
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return parsed, nil
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}
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func OssCDNBaseURL(raw string) (*url.URL, error) {
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parsed, err := url.Parse(strings.TrimSpace(raw))
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if err != nil || parsed.Hostname() == "" {
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return nil, errors.New("对象存储 CDN 加速域名格式不正确")
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}
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if parsed.Scheme != "https" && parsed.Scheme != "http" {
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return nil, errors.New("对象存储 CDN 加速域名只支持 http/https")
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}
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if parsed.User != nil || parsed.RawQuery != "" || parsed.Fragment != "" || strings.Trim(parsed.Path, "/") != "" {
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return nil, errors.New("对象存储 CDN 加速域名不能包含认证信息、路径、查询参数或片段")
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}
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parsed.Path = ""
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return parsed, nil
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}
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func OssCDNObjectURL(raw string, objectKey string) (string, error) {
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baseURL, err := OssCDNBaseURL(raw)
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if err != nil {
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return "", err
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}
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objectKey = strings.TrimLeft(strings.TrimSpace(objectKey), "/")
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if objectKey == "" {
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return "", errors.New("对象存储对象路径为空")
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}
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// CDN 使用自己的访问鉴权与私有桶回源鉴权，不能携带 OSS/COS 的预签名参数。
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// url.URL.String 会负责转义 Path；这里保留未转义值，避免把 %20 再编码为 %2520。
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baseURL.Path = "/" + objectKey
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return baseURL.String(), nil
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}
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func NewOSSRequest(method string, setting Settings, objectKey string, contentType string, body io.Reader) (*http.Request, error) {
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baseURL, err := OssBucketBaseURL(setting)
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if err != nil {
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return nil, err
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||
}
|
||
baseURL.Path = strings.TrimRight(baseURL.Path, "/") + "/" + strings.TrimLeft(objectKey, "/")
|
||
// 请求体必须用 no-op close 包装：服务端提前返回（如 OSS 签名 403）时
|
||
// http.Transport 会关闭未发完的 Request.Body，若直接传入 *os.File 等
|
||
// 调用方持有的文件，后续“降级本地存储”的 Seek 重读将因 file already
|
||
// closed 失败。NopCloser 让 Transport 的关闭成为空操作，底层文件保持可用。
|
||
// GET/HEAD/DELETE 等无请求体的调用传入 nil body；NopCloser(nil) 会产生非 nil 的
|
||
// Body 包装 nil reader，Go 1.26 发送前 body 探测会直接 nil 解引用崩溃。
|
||
var reqBody io.Reader
|
||
if body != nil {
|
||
reqBody = io.NopCloser(body)
|
||
}
|
||
req, err := http.NewRequest(method, baseURL.String(), reqBody)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
date := time.Now().UTC().Format(http.TimeFormat)
|
||
req.Header.Set("Date", date)
|
||
if contentType != "" {
|
||
req.Header.Set("Content-Type", contentType)
|
||
}
|
||
stringToSign := strings.Join([]string{method, "", contentType, date, "/" + setting.Bucket + "/" + objectKey}, "\n")
|
||
mac := hmac.New(sha1.New, []byte(setting.AccessKeySecret))
|
||
_, _ = mac.Write([]byte(stringToSign))
|
||
signature := base64.StdEncoding.EncodeToString(mac.Sum(nil))
|
||
req.Header.Set("Authorization", "OSS "+setting.AccessKeyID+":"+signature)
|
||
return req, nil
|
||
}
|
||
|
||
func OssBucketBaseURL(setting Settings) (*url.URL, error) {
|
||
endpoint := strings.TrimRight(setting.Endpoint, "/")
|
||
if endpoint == "" {
|
||
return nil, errors.New("OSS Endpoint 为空")
|
||
}
|
||
if !strings.Contains(endpoint, "://") {
|
||
endpoint = "https://" + endpoint
|
||
}
|
||
parsed, err := url.Parse(endpoint)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
if parsed.Host == "" {
|
||
return nil, errors.New("OSS Endpoint 格式不正确")
|
||
}
|
||
if !strings.HasPrefix(parsed.Host, setting.Bucket+".") {
|
||
parsed.Host = setting.Bucket + "." + parsed.Host
|
||
}
|
||
return parsed, nil
|
||
}
|
||
|
||
func EscapeObjectKey(key string) string {
|
||
parts := strings.Split(key, "/")
|
||
for i, part := range parts {
|
||
parts[i] = url.PathEscape(part)
|
||
}
|
||
return strings.Join(parts, "/")
|
||
}
|
||
|
||
func DeleteAliyunOSSObject(setting Settings, objectKey string) error {
|
||
req, err := NewOSSRequest(http.MethodDelete, setting, objectKey, "", nil)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
resp, err := outbound.OutboundHTTPClient(2 * time.Minute).Do(req)
|
||
if err != nil {
|
||
return fmt.Errorf("删除阿里云 OSS 对象失败：%w", err)
|
||
}
|
||
defer resp.Body.Close()
|
||
if (resp.StatusCode < 200 || resp.StatusCode >= 300) && resp.StatusCode != http.StatusNotFound {
|
||
detail, _ := io.ReadAll(io.LimitReader(resp.Body, 512))
|
||
return fmt.Errorf("删除阿里云 OSS 对象失败：%s %s", resp.Status, strings.TrimSpace(string(detail)))
|
||
}
|
||
return nil
|
||
}
|
||
|
||
func DeleteTencentCOSObject(setting Settings, objectKey string) error {
|
||
client, err := NewCOSClient(setting, 2*time.Minute)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
resp, err := client.Object.Delete(context.Background(), objectKey)
|
||
if resp != nil && resp.Body != nil {
|
||
defer resp.Body.Close()
|
||
}
|
||
if err != nil {
|
||
if resp != nil && resp.StatusCode == http.StatusNotFound {
|
||
return nil
|
||
}
|
||
return fmt.Errorf("删除腾讯云 COS 对象失败：%w", err)
|
||
}
|
||
return nil
|
||
}
|
||
|
||
func DeleteQiniuObject(setting Settings, objectKey string) error {
|
||
if setting.AccessKeyID == "" || setting.AccessKeySecret == "" {
|
||
return errors.New("七牛云 Kodo 访问密钥不可用")
|
||
}
|
||
if setting.Bucket == "" || strings.TrimSpace(objectKey) == "" {
|
||
return errors.New("七牛云 Kodo Bucket 或对象路径为空")
|
||
}
|
||
mac := qiniuAuth.New(setting.AccessKeyID, setting.AccessKeySecret)
|
||
manager := qiniuStorage.NewBucketManager(mac, &qiniuStorage.Config{Region: QiniuRegion(setting.Region), UseHTTPS: true})
|
||
if err := manager.Delete(setting.Bucket, strings.TrimLeft(objectKey, "/")); err != nil {
|
||
if strings.Contains(strings.ToLower(err.Error()), "no such") || strings.Contains(strings.ToLower(err.Error()), "not found") {
|
||
return nil
|
||
}
|
||
return fmt.Errorf("删除七牛云 Kodo 对象失败：%w", err)
|
||
}
|
||
return nil
|
||
}
|