// RebuildIndex combines all known indexes to a new index, leaving out any
// packs whose ID is contained in packBlacklist. The new index contains the IDs
// of all known indexes in the "supersedes" field.
func (mi *MasterIndex) RebuildIndex(packBlacklist backend.IDSet) (*Index, error) {
mi.idxMutex.Lock()
defer mi.idxMutex.Unlock()
debug.Log("MasterIndex.RebuildIndex", "start rebuilding index of %d indexes, pack blacklist: %v", len(mi.idx), packBlacklist)
newIndex := NewIndex()
done := make(chan struct{})
defer close(done)
for i, idx := range mi.idx {
debug.Log("MasterIndex.RebuildIndex", "adding index %d", i)
for pb := range idx.Each(done) {
if packBlacklist.Has(pb.PackID) {
continue
}
newIndex.Store(pb)
}
if !idx.Final() {
debug.Log("MasterIndex.RebuildIndex", "index %d isn't final, don't add to supersedes field", i)
continue
}
id, err := idx.ID()
if err != nil {
debug.Log("MasterIndex.RebuildIndex", "index %d does not have an ID: %v", err)
return nil, err
}
debug.Log("MasterIndex.RebuildIndex", "adding index id %v to supersedes field", id.Str())
err = newIndex.AddToSupersedes(id)
if err != nil {
return nil, err
}
}
return newIndex, nil
}
func TestRepacker(t *testing.T) {
WithTestEnvironment(t, checkerTestData, func(repodir string) {
repo := OpenLocalRepo(t, repodir)
OK(t, repo.LoadIndex())
repo.Backend().Remove(backend.Snapshot, "c2b53c5e6a16db92fbb9aa08bd2794c58b379d8724d661ee30d20898bdfdff22")
unusedBlobs := backend.IDSet{
ParseID("5714f7274a8aa69b1692916739dc3835d09aac5395946b8ec4f58e563947199a"): struct{}{},
ParseID("08d0444e9987fa6e35ce4232b2b71473e1a8f66b2f9664cc44dc57aad3c5a63a"): struct{}{},
ParseID("356493f0b00a614d36c698591bbb2b1d801932d85328c1f508019550034549fc"): struct{}{},
ParseID("b8a6bcdddef5c0f542b4648b2ef79bc0ed4377d4109755d2fb78aff11e042663"): struct{}{},
}
chkr := checker.New(repo)
_, errs := chkr.LoadIndex()
OKs(t, errs)
errs = checkStruct(chkr)
OKs(t, errs)
list := backend.NewIDSet(chkr.UnusedBlobs()...)
if !unusedBlobs.Equals(list) {
t.Fatalf("expected unused blobs:\n %v\ngot:\n %v", unusedBlobs, list)
}
repacker := checker.NewRepacker(repo, unusedBlobs)
OK(t, repacker.Repack())
chkr = checker.New(repo)
_, errs = chkr.LoadIndex()
OKs(t, errs)
OKs(t, checkPacks(chkr))
OKs(t, checkStruct(chkr))
blobs := chkr.UnusedBlobs()
Assert(t, len(blobs) == 0,
"expected zero unused blobs, got %v", blobs)
})
}