// TODO(cryptix): find these helpers somewhere else
func (i *gatewayHandler) newDagFromReader(r io.Reader) (*dag.Node, error) {
// TODO(cryptix): change and remove this helper once PR1136 is merged
// return ufs.AddFromReader(i.node, r.Body)
return importer.BuildDagFromReader(
i.node.DAG,
chunk.DefaultSplitter(r),
importer.BasicPinnerCB(i.node.Pinning.GetManual()))
}
// appendData appends the blocks from the given chan to the end of this dag
func (dm *DagModifier) appendData(node *mdag.Node, blks <-chan []byte, errs <-chan error) (*mdag.Node, error) {
dbp := &help.DagBuilderParams{
Dagserv: dm.dagserv,
Maxlinks: help.DefaultLinksPerBlock,
NodeCB: imp.BasicPinnerCB(dm.mp),
}
return trickle.TrickleAppend(dm.ctx, node, dbp.New(blks, errs))
}
// Add builds a merkledag from the a reader, pinning all objects to the local
// datastore. Returns a key representing the root node.
func Add(n *core.IpfsNode, r io.Reader) (string, error) {
// TODO more attractive function signature importer.BuildDagFromReader
dagNode, err := importer.BuildDagFromReader(
n.DAG,
chunk.NewSizeSplitter(r, chunk.DefaultBlockSize),
importer.BasicPinnerCB(n.Pinning.GetManual()),
)
if err != nil {
return "", err
}
k, err := dagNode.Key()
if err != nil {
return "", err
}
return k.String(), nil
}