Client import

node/client/import.go

@@ -0,0 +1,57 @@
+package client
+
+import (
+	"context"
+	"go.uber.org/fx"
+	"os"
+
+	"github.com/ipfs/go-cid"
+	chunker "github.com/ipfs/go-ipfs-chunker"
+	files "github.com/ipfs/go-ipfs-files"
+	ipld "github.com/ipfs/go-ipld-format"
+	"github.com/ipfs/go-unixfs/importer/balanced"
+	ihelper "github.com/ipfs/go-unixfs/importer/helpers"
+)
+
+type LocalStorage struct {
+	fx.In
+
+	LocalDAG ipld.DAGService
+}
+
+func (s *LocalStorage) ClientImport(ctx context.Context, path string) (cid.Cid, error)  {
+	f, err := os.Open(path)
+	if err != nil {
+		return cid.Undef, err
+	}
+	stat, err := f.Stat()
+	if err != nil {
+		return cid.Undef, err
+	}
+
+	file, err := files.NewReaderPathFile(path, f, stat)
+	if err != nil {
+		return cid.Undef, err
+	}
+
+	bufferedDS := ipld.NewBufferedDAG(ctx, s.LocalDAG)
+
+	params := ihelper.DagBuilderParams{
+		Maxlinks:   ihelper.DefaultLinksPerBlock,
+		RawLeaves:  true,
+		CidBuilder: nil,
+		Dagserv:    bufferedDS, // flush?
+		NoCopy:     false,
+	}
+
+	db, err := params.New(chunker.DefaultSplitter(file))
+	if err != nil {
+		return cid.Undef, err
+	}
+	nd, err := balanced.Layout(db)
+	if err != nil {
+		return cid.Undef, err
+	}
+
+	return nd.Cid(), bufferedDS.Commit()
+}