| 1 | package coreunix |
| 2 | |
| 3 | import ( |
| 4 | dag "github.com/ipfs/boxo/ipld/merkledag" |
| 5 | ft "github.com/ipfs/boxo/ipld/unixfs" |
| 6 | cid "github.com/ipfs/go-cid" |
| 7 | core "github.com/ipfs/kubo/core" |
| 8 | ) |
| 9 | |
| 10 | func AddMetadataTo(n *core.IpfsNode, skey string, m *ft.Metadata) (string, error) { |
| 11 | c, err := cid.Decode(skey) |
| 12 | if err != nil { |
| 13 | return "", err |
| 14 | } |
| 15 | |
| 16 | nd, err := n.DAG.Get(n.Context(), c) |
| 17 | if err != nil { |
| 18 | return "", err |
| 19 | } |
| 20 | |
| 21 | mdnode := new(dag.ProtoNode) |
| 22 | mdata, err := ft.BytesForMetadata(m) |
| 23 | if err != nil { |
| 24 | return "", err |
| 25 | } |
| 26 | |
| 27 | mdnode.SetData(mdata) |
| 28 | if err := mdnode.AddNodeLink("file", nd); err != nil { |
| 29 | return "", err |
| 30 | } |
| 31 | |
| 32 | err = n.DAG.Add(n.Context(), mdnode) |
| 33 | if err != nil { |
| 34 | return "", err |
| 35 | } |
| 36 | |
| 37 | return mdnode.Cid().String(), nil |
| 38 | } |
| 39 | |
| 40 | func Metadata(n *core.IpfsNode, skey string) (*ft.Metadata, error) { |
| 41 | c, err := cid.Decode(skey) |
| 42 | if err != nil { |
| 43 | return nil, err |
| 44 | } |
| 45 | |
| 46 | nd, err := n.DAG.Get(n.Context(), c) |
| 47 | if err != nil { |
| 48 | return nil, err |
| 49 | } |
| 50 | |
| 51 | pbnd, ok := nd.(*dag.ProtoNode) |
| 52 | if !ok { |
| 53 | return nil, dag.ErrNotProtobuf |
| 54 | } |
| 55 | |
| 56 | return ft.MetadataFromBytes(pbnd.Data()) |
| 57 | } |