/
metadata.go
55 lines (43 loc) · 1.12 KB
/
metadata.go
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package coreunix
import (
"time"
context "github.com/ipfs/go-ipfs/Godeps/_workspace/src/golang.org/x/net/context"
key "github.com/ipfs/go-ipfs/blocks/key"
core "github.com/ipfs/go-ipfs/core"
dag "github.com/ipfs/go-ipfs/merkledag"
ft "github.com/ipfs/go-ipfs/unixfs"
)
func AddMetadataTo(n *core.IpfsNode, skey string, m *ft.Metadata) (string, error) {
ukey := key.B58KeyDecode(skey)
ctx, cancel := context.WithTimeout(context.TODO(), time.Minute)
defer cancel()
nd, err := n.DAG.Get(ctx, ukey)
if err != nil {
return "", err
}
mdnode := new(dag.Node)
mdata, err := ft.BytesForMetadata(m)
if err != nil {
return "", err
}
mdnode.Data = mdata
err = mdnode.AddNodeLinkClean("file", nd)
if err != nil {
return "", err
}
nk, err := n.DAG.Add(mdnode)
if err != nil {
return "", err
}
return nk.B58String(), nil
}
func Metadata(n *core.IpfsNode, skey string) (*ft.Metadata, error) {
ukey := key.B58KeyDecode(skey)
ctx, cancel := context.WithTimeout(context.TODO(), time.Minute)
defer cancel()
nd, err := n.DAG.Get(ctx, ukey)
if err != nil {
return nil, err
}
return ft.MetadataFromBytes(nd.Data)
}