// 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
}
