// updateApply applies an update of the ipfs binary and shuts down the node if successful
func updateApply(n *core.IpfsNode) (*UpdateOutput, error) {
// TODO: 'force bool' param that stops the daemon (if running) before update
output := &UpdateOutput{
OldVersion: updates.Version,
}
u, err := updates.CheckForUpdate()
if err != nil {
return nil, err
}
if u == nil {
output.NewVersion = updates.Version
return output, nil
}
output.NewVersion = u.Version
if n.OnlineMode() {
return nil, errors.New(`You must stop the IPFS daemon before updating.`)
}
if err = updates.Apply(u); err != nil {
return nil, err
}
return output, nil
}
func AddMetadataTo(n *core.IpfsNode, skey string, m *ft.Metadata) (string, error) {
ukey := key.B58KeyDecode(skey)
nd, err := n.DAG.Get(n.Context(), ukey)
if err != nil {
return "", err
}
mdnode := new(dag.Node)
mdata, err := ft.BytesForMetadata(m)
if err != nil {
return "", err
}
mdnode.Data = mdata
if err := mdnode.AddNodeLinkClean("file", nd); err != nil {
return "", err
}
nk, err := n.DAG.Add(mdnode)
if err != nil {
return "", err
}
return nk.B58String(), nil
}
// printing self is special cased as we get values differently.
func printSelf(node *core.IpfsNode) (interface{}, error) {
info := new(IdOutput)
info.ID = node.Identity.Pretty()
if node.PrivateKey == nil {
if err := node.LoadPrivateKey(); err != nil {
return nil, err
}
}
pk := node.PrivateKey.GetPublic()
pkb, err := ic.MarshalPublicKey(pk)
if err != nil {
return nil, err
}
info.PublicKey = base64.StdEncoding.EncodeToString(pkb)
if node.PeerHost != nil {
for _, a := range node.PeerHost.Addrs() {
s := a.String() + "/ipfs/" + info.ID
info.Addresses = append(info.Addresses, s)
}
}
info.ProtocolVersion = identify.IpfsVersion
info.AgentVersion = identify.ClientVersion
return info, nil
}
func Cat(n *core.IpfsNode, pstr string) (*uio.DagReader, error) {
p := path.FromString(pstr)
dagNode, err := n.Resolver.ResolvePath(n.Context(), p)
if err != nil {
return nil, err
}
return uio.NewDagReader(n.Context(), dagNode, n.DAG)
}
func addNode(n *core.IpfsNode, node *merkledag.Node) error {
if err := n.DAG.AddRecursive(node); err != nil { // add the file to the graph + local storage
return err
}
ctx, cancel := context.WithCancel(n.Context())
defer cancel()
err := n.Pinning.Pin(ctx, node, true) // ensure we keep it
return err
}
func Dial(nd *core.IpfsNode, p peer.ID, protocol string) (net.Stream, error) {
ctx, cancel := context.WithTimeout(nd.Context(), time.Second*30)
defer cancel()
err := nd.PeerHost.Connect(ctx, peer.PeerInfo{ID: p})
if err != nil {
return nil, err
}
return nd.PeerHost.NewStream(pro.ID(protocol), p)
}
func Metadata(n *core.IpfsNode, skey string) (*ft.Metadata, error) {
ukey := key.B58KeyDecode(skey)
nd, err := n.DAG.Get(n.Context(), ukey)
if err != nil {
return nil, err
}
return ft.MetadataFromBytes(nd.Data)
}
func Serve(node *core.IpfsNode, lis net.Listener, options ...ServeOption) error {
handler, err := makeHandler(node, lis, options...)
if err != nil {
return err
}
addr, err := manet.FromNetAddr(lis.Addr())
if err != nil {
return err
}
// if the server exits beforehand
var serverError error
serverExited := make(chan struct{})
node.Process().Go(func(p goprocess.Process) {
serverError = http.Serve(lis, handler)
close(serverExited)
})
// wait for server to exit.
select {
case <-serverExited:
// if node being closed before server exits, close server
case <-node.Process().Closing():
log.Infof("server at %s terminating...", addr)
lis.Close()
outer:
for {
// wait until server exits
select {
case <-serverExited:
// if the server exited as we are closing, we really dont care about errors
serverError = nil
break outer
case <-time.After(5 * time.Second):
log.Infof("waiting for server at %s to terminate...", addr)
}
}
}
log.Infof("server at %s terminated", addr)
return serverError
}
func Listen(nd *core.IpfsNode, protocol string) (*ipfsListener, error) {
ctx, cancel := context.WithCancel(nd.Context())
list := &ipfsListener{
proto: pro.ID(protocol),
conCh: make(chan net.Stream),
ctx: ctx,
cancel: cancel,
}
nd.PeerHost.SetStreamHandler(list.proto, func(s net.Stream) {
select {
case list.conCh <- s:
case <-ctx.Done():
s.Close()
}
})
return list, nil
}
