package s3 import ( "bytes" "fmt" "hash" "io" "time" "github.com/aws/aws-sdk-go/aws" "github.com/aws/aws-sdk-go/service/s3" "github.com/pkg/errors" "github.com/Luzifer/cloudbox/providers" ) type File struct { key string lastModified time.Time checksum string size uint64 s3Conn *s3.S3 bucket string } func (f File) Info() providers.FileInfo { return providers.FileInfo{ RelativeName: f.key, LastModified: f.lastModified, Checksum: f.checksum, Size: f.size, } } func (f File) Checksum(h hash.Hash) (string, error) { cont, err := f.Content() if err != nil { return "", errors.Wrap(err, "Unable to get file content") } defer cont.Close() buf := new(bytes.Buffer) if _, err := io.Copy(buf, cont); err != nil { return "", errors.Wrap(err, "Unable to read file content") } return fmt.Sprintf("%x", h.Sum(buf.Bytes())), nil } func (f File) Content() (io.ReadCloser, error) { resp, err := f.s3Conn.GetObject(&s3.GetObjectInput{ Bucket: aws.String(f.bucket), Key: aws.String(f.key), }) if err != nil { return nil, errors.Wrap(err, "Unable to get file") } return resp.Body, nil }