cialloo
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56 lines
1.4 KiB
Go
56 lines
1.4 KiB
Go
package logic
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import (
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"context"
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"time"
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"git.cialloo.com/CiallooWeb/Blog/app/internal/svc"
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"git.cialloo.com/CiallooWeb/Blog/app/internal/types"
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"github.com/aws/aws-sdk-go-v2/service/s3"
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"github.com/zeromicro/go-zero/core/logx"
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)
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type DownloadPresignedURLLogic struct {
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logx.Logger
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ctx context.Context
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svcCtx *svc.ServiceContext
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}
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// Get presigned URL for file download
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func NewDownloadPresignedURLLogic(ctx context.Context, svcCtx *svc.ServiceContext) *DownloadPresignedURLLogic {
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return &DownloadPresignedURLLogic{
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Logger: logx.WithContext(ctx),
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ctx: ctx,
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svcCtx: svcCtx,
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}
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}
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func (l *DownloadPresignedURLLogic) DownloadPresignedURL(req *types.DownloadPresignedURLReq) (resp *types.DownloadPresignedURLResp, err error) {
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// Calculate expiration time
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expiration := time.Duration(l.svcCtx.Config.S3.PresignedURLExpiration) * time.Second
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expireAt := time.Now().Add(expiration).Unix()
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// Create presigned client
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presignClient := s3.NewPresignClient(l.svcCtx.S3Client)
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// Generate presigned GET URL
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getObjectInput := &s3.GetObjectInput{
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Bucket: &l.svcCtx.Config.S3.Bucket,
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Key: &req.FileKey,
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}
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presignedReq, err := presignClient.PresignGetObject(l.ctx, getObjectInput, func(opts *s3.PresignOptions) {
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opts.Expires = expiration
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})
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if err != nil {
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l.Errorf("Failed to generate presigned URL: %v", err)
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return nil, err
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}
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return &types.DownloadPresignedURLResp{
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Url: presignedReq.URL,
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ExpireAt: expireAt,
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}, nil
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}
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