From 0ecbee354611beb149952d3b568590d7c0c6ebd4 Mon Sep 17 00:00:00 2001
From: hannahhoward <hannah@hannahhoward.net>
Date: Wed, 17 Feb 2021 11:36:15 -0800
Subject: [PATCH] feat(utils): add prefetch to IPFS

---
 testbed/testbed/utils/ipfs.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/testbed/testbed/utils/ipfs.go b/testbed/testbed/utils/ipfs.go
index d82c320..70cc427 100644
--- a/testbed/testbed/utils/ipfs.go
+++ b/testbed/testbed/utils/ipfs.go
@@ -16,6 +16,7 @@ import (
 	"github.com/ipfs/go-datastore"
 	files "github.com/ipfs/go-ipfs-files"
 	ipld "github.com/ipfs/go-ipld-format"
+	"github.com/ipfs/go-merkledag"
 	"github.com/ipfs/interface-go-ipfs-core/path"
 
 	blockstore "github.com/ipfs/go-ipfs-blockstore"
@@ -338,7 +339,7 @@ func (n *IPFSNode) ClearDatastore(ctx context.Context) error {
 	//}
 	//for _, r := range entries {
 	//	ds.Delete(datastore.NewKey(r.Key))
-		//ds.Sync(datastore.NewKey(r.Key))
+	//ds.Sync(datastore.NewKey(r.Key))
 	//}
 	return nil
 }
@@ -396,6 +397,10 @@ func (n *IPFSNode) Add(ctx context.Context, tmpFile files.Node) (cid.Cid, error)
 }
 
 func (n *IPFSNode) Fetch(ctx context.Context, c cid.Cid, _ []PeerInfo) (files.Node, error) {
+	err := merkledag.FetchGraph(ctx, c, n.API.DAG())
+	if err != nil {
+		return nil, err
+	}
 	fPath := path.IpfsPath(c)
 	return n.API.Unixfs().Get(ctx, fPath)
 }