func (w *writecache) Put(b *blocks.Block) error {
if _, ok := w.cache.Get(b.Key()); ok {
return nil
}
w.cache.Add(b.Key(), struct{}{})
return w.blockstore.Put(b)
}
func (bs *blockstore) Put(block *blocks.Block) error {
k := block.Key().DsKey()
// Has is cheaper than Put, so see if we already have it
exists, err := bs.datastore.Has(k)
if err == nil && exists {
return nil // already stored.
}
return bs.datastore.Put(k, block.Data)
}
func (s *BlockList) Push(b *blocks.Block) {
if s.uniques == nil {
s.uniques = make(map[key.Key]*list.Element)
}
_, ok := s.uniques[b.Key()]
if !ok {
e := s.list.PushBack(b)
s.uniques[b.Key()] = e
}
}
// AddBlock adds a particular block to the service, Putting it into the datastore.
// TODO pass a context into this if the remote.HasBlock is going to remain here.
func (s *BlockService) AddBlock(b *blocks.Block) (key.Key, error) {
k := b.Key()
err := s.Blockstore.Put(b)
if err != nil {
return k, err
}
if err := s.worker.HasBlock(b); err != nil {
return "", errors.New("blockservice is closed")
}
return k, nil
}