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b2: Don't re-read the SHA1 if we already have it

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This commit is contained in:
Nick Craig-Wood 2016-01-19 08:20:23 +00:00
parent d9458fb4ee
commit ae3a0ec27e
1 changed files with 6 additions and 5 deletions
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11
b2/b2.go
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@ -614,11 +614,12 @@ func (o *Object) Hash(t fs.HashType) (string, error) {
if t != fs.HashSHA1 {
return "", fs.ErrHashUnsupported
}
// Error is logged in readFileMetadata
err := o.readFileMetadata()
if err != nil {
return "", err
if o.sha1 == "" {
// Error is logged in readFileMetadata
err := o.readFileMetadata()
if err != nil {
return "", err
}
}
return o.sha1, nil
}