TrueCloudLab/restic
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restic: generic implemention of AsBackend

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This commit is contained in:
Michael Eischer 2023-06-17 19:23:55 +02:00
parent 11eb88a2ea
commit 51718ec561
4 changed files with 57 additions and 46 deletions
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21
internal/migrations/s3_layout.go
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@ -21,26 +21,9 @@ func init() {
// "default" layout.
type S3Layout struct{}
func toS3Backend(b restic.Backend) *s3.Backend {
for b != nil {
if be, ok := b.(*s3.Backend); ok {
return be
}
if be, ok := b.(restic.BackendUnwrapper); ok {
b = be.Unwrap()
} else {
// not the backend we're looking for
break
}
}
debug.Log("backend is not s3")
return nil
}
// Check tests whether the migration can be applied.
func (m *S3Layout) Check(_ context.Context, repo restic.Repository) (bool, string, error) {
be := toS3Backend(repo.Backend())
be := restic.AsBackend[*s3.Backend](repo.Backend())
if be == nil {
debug.Log("backend is not s3")
return false, "backend is not s3", nil
@ -92,7 +75,7 @@ func (m *S3Layout) moveFiles(ctx context.Context, be *s3.Backend, l layout.Layou
// Apply runs the migration.
func (m *S3Layout) Apply(ctx context.Context, repo restic.Repository) error {
be := toS3Backend(repo.Backend())
be := restic.AsBackend[*s3.Backend](repo.Backend())
if be == nil {
debug.Log("backend is not s3")
return errors.New("backend is not s3")