func NewNode(ctx context.Context, cfg *BuildCfg) (*IpfsNode, error) {
if cfg == nil {
cfg = new(BuildCfg)
}
err := cfg.fillDefaults()
if err != nil {
return nil, err
}
ctx = metrics.CtxScope(ctx, "ipfs")
n := &IpfsNode{
mode: offlineMode,
Repo: cfg.Repo,
ctx: ctx,
Peerstore: pstore.NewPeerstore(),
}
if cfg.Online {
n.mode = onlineMode
}
// TODO: this is a weird circular-ish dependency, rework it
n.proc = goprocessctx.WithContextAndTeardown(ctx, n.teardown)
if err := setupNode(ctx, n, cfg); err != nil {
n.Close()
return nil, err
}
return n, nil
}
func setupPeer(a args) (peer.ID, pstore.Peerstore, error) {
if a.keybits < 1024 {
return "", nil, errors.New("Bitsize less than 1024 is considered unsafe.")
}
out("generating key pair...")
sk, pk, err := ci.GenerateKeyPair(ci.RSA, a.keybits)
if err != nil {
return "", nil, err
}
p, err := peer.IDFromPublicKey(pk)
if err != nil {
return "", nil, err
}
ps := pstore.NewPeerstore()
ps.AddPrivKey(p, sk)
ps.AddPubKey(p, pk)
out("local peer id: %s", p)
return p, ps, nil
}
func spawnDHT(pk ci.PrivKey, dstore repo.Datastore, bootstraps []ma.Multiaddr) (*dht.IpfsDHT, error) {
pub := pk.GetPublic()
local, err := peer.IDFromPublicKey(pub)
if err != nil {
return nil, err
}
fmt.Println("Local peer ID: ", local.Pretty())
ps := pstore.NewPeerstore()
ps.AddPrivKey(local, pk)
ps.AddPubKey(local, pub)
listenaddr, err := ma.NewMultiaddr("/ip4/0.0.0.0/tcp/0")
if err != nil {
return nil, err
}
s, err := swarm.NewNetwork(context.Background(), []ma.Multiaddr{listenaddr}, local, ps, metrics.NewBandwidthCounter())
if err != nil {
fatal(err)
}
host := basichost.New(s)
idht := dht.NewDHT(context.Background(), host, dstore)
idht.Validator[IpnsValidatorTag] = namesys.IpnsRecordValidator
idht.Selector[IpnsValidatorTag] = namesys.IpnsSelectorFunc
err = doBootstrap(host, idht, bootstraps)
if err != nil {
return nil, err
}
return idht, nil
}