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Use an early exit if a docker-archive: image has no repo tags

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This avoids another "append an only item to an empty array"
pattern, and will allow us to get rid of the "dest" variable
entirely.

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

Closes: #1176
Approved by: rhatdan
This commit is contained in:
Miloslav Trmač
2018-07-27 03:36:25 +02:00
committed by Atomic Bot
parent d4dbe66774
commit e8f7442831
1 changed files with 4 additions and 5 deletions
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9
libpod/image/pull.go
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@ -109,18 +109,17 @@ func refNamesFromImageReference(ctx context.Context, srcRef types.ImageReference
return []*pullRefName{getPullRefName(srcRef, reference)}, nil
}
var dest []string
if len(manifest[0].RepoTags) == 0 {
// If the input image has no repotags, we need to feed it a dest anyways
digest, err := getImageDigest(ctx, srcRef, sc)
if err != nil {
return nil, err
}
dest = append(dest, digest)
} else {
// Need to load in all the repo tags from the manifest
dest = append(dest, manifest[0].RepoTags...)
return []*pullRefName{getPullRefName(srcRef, digest)}, nil
}
// Need to load in all the repo tags from the manifest
dest := manifest[0].RepoTags
res := []*pullRefName{}
for _, dst := range dest {
pullInfo := getPullRefName(srcRef, dst)