package main import ( "context" "errors" "os" "time" "github.com/minio/minio-go/v7" "golang.org/x/net/webdav" ) /* * S3FS lifetime is limited to a single request * Conversely, Golang's abstraction has been thought to be shared between users * Sharing an instance between users would be very dangerous (as we would need many checks between shared values) */ type S3FS struct { cache map[string]*S3Stat mc *minio.Client ctx context.Context } func NewS3FS(mc *minio.Client) S3FS { return S3FS{ cache: make(map[string]*S3Stat), mc: mc, } } func (s S3FS) Mkdir(ctx context.Context, name string, perm os.FileMode) error { s.ctx = ctx return errors.New("Not implemented Mkdir") } func (s S3FS) OpenFile(ctx context.Context, name string, flag int, perm os.FileMode) (webdav.File, error) { s.ctx = ctx // If the file does not exist when opening it, we create a stub if _, ok := s.cache[name]; !ok { st := new(S3Stat) st.fs = &s st.path = NewS3Path(name) st.path.class = OBJECT st.obj.Key = st.path.key st.obj.LastModified = time.Now() s.cache[name] = st } return NewS3File(&s, name) } func (s S3FS) RemoveAll(ctx context.Context, name string) error { s.ctx = ctx return errors.New("Not implemented RemoveAll") } func (s S3FS) Rename(ctx context.Context, oldName, newName string) error { s.ctx = ctx return errors.New("Not implemented Rename") } func (s S3FS) Stat(ctx context.Context, name string) (os.FileInfo, error) { s.ctx = ctx return NewS3Stat(&s, name) }