make files stat --with-local return immediately when no data is present

License: MIT
Signed-off-by: Michael Muré <batolettre@gmail.com>

core/commands/files.go

@@ -125,7 +125,20 @@ var filesStatCmd = &cmds.Command{
 			return
 		}
 
-		nd, err := getNodeFromPath(req.Context, node, path)
+		withLocal, _ := req.Options["with-local"].(bool)
+
+		var dagserv ipld.DAGService
+		if withLocal {
+			// an offline DAGService will not fetch from the network
+			dagserv = dag.NewDAGService(bservice.New(
+				node.Blockstore,
+				offline.Exchange(node.Blockstore),
+			))
+		} else {
+			dagserv = node.DAG
+		}
+
+		nd, err := getNodeFromPath(req.Context, node, dagserv, path)
 		if err != nil {
 			res.SetError(err, cmdkit.ErrNormal)
 			return
@@ -137,18 +150,11 @@ var filesStatCmd = &cmds.Command{
 			return
 		}
 
-		withLocal, _ := req.Options["with-local"].(bool)
 		if !withLocal {
 			res.Emit(o)
 			return
 		}
 
-		// an offline DAGService will not fetch from the network
-		dagserv := dag.NewDAGService(bservice.New(
-			node.Blockstore,
-			offline.Exchange(node.Blockstore),
-		))
-
 		local, sizeLocal, err := walkBlock(req.Context, dagserv, nd)
 
 		o.WithLocality = true
@@ -321,7 +327,7 @@ var filesCpCmd = &oldcmds.Command{
 			dst += gopath.Base(src)
 		}
 
-		nd, err := getNodeFromPath(req.Context(), node, src)
+		nd, err := getNodeFromPath(req.Context(), node, node.DAG, src)
 		if err != nil {
 			res.SetError(err, cmdkit.ErrNormal)
 			return
@@ -345,7 +351,7 @@ var filesCpCmd = &oldcmds.Command{
 	},
 }
 
-func getNodeFromPath(ctx context.Context, node *core.IpfsNode, p string) (ipld.Node, error) {
+func getNodeFromPath(ctx context.Context, node *core.IpfsNode, dagservice ipld.DAGService, p string) (ipld.Node, error) {
 	switch {
 	case strings.HasPrefix(p, "/ipfs/"):
 		np, err := path.ParsePath(p)
@@ -354,7 +360,7 @@ func getNodeFromPath(ctx context.Context, node *core.IpfsNode, p string) (ipld.N
 		}
 
 		resolver := &resolver.Resolver{
-			DAG:         node.DAG,
+			DAG:         dagservice,
 			ResolveOnce: uio.ResolveUnixfsOnce,
 		}