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Add Stat() method to backend interface

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This commit is contained in:
Alexander Neumann 2016-01-23 23:27:58 +01:00
parent 10b03eee27
commit 919b40c6cf
7 changed files with 97 additions and 0 deletions
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14
backend/local/local.go
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@ -252,6 +252,20 @@ func (b *Local) Load(h backend.Handle, p []byte, off int64) (n int, err error) {
return io.ReadFull(f, p)
}
// Stat returns information about a blob.
func (b *Local) Stat(h backend.Handle) (backend.BlobInfo, error) {
if err := h.Valid(); err != nil {
return backend.BlobInfo{}, err
}
fi, err := os.Stat(filename(b.p, h.Type, h.Name))
if err != nil {
return backend.BlobInfo{}, err
}
return backend.BlobInfo{Size: fi.Size()}, nil
}
// Test returns true if a blob of the given type and name exists in the backend.
func (b *Local) Test(t backend.Type, name string) (bool, error) {
_, err := os.Stat(filename(b.p, t, name))