func makeLevelDBDatastore(cfg config.Datastore) (u.ThreadSafeDatastoreCloser, error) {
if len(cfg.Path) == 0 {
return nil, debugerror.Errorf("config datastore.path required for leveldb")
}
ds, err := lds.NewDatastore(cfg.Path, &lds.Options{
// TODO don't import ldbopts. Get from go-datastore.leveldb
Compression: ldbopts.NoCompression,
})
return ds, debugerror.Wrap(err)
}
func Lock(confdir string) (io.Closer, error) {
c, err := lock.Lock(path.Join(confdir, LockFile))
return c, debugerror.Wrap(err)
}
// NewIpfsNode constructs a new IpfsNode based on the given config.
func NewIpfsNode(cfg *config.Config, online bool) (n *IpfsNode, err error) {
success := false // flip to true after all sub-system inits succeed
defer func() {
if !success && n != nil {
n.Close()
}
}()
if cfg == nil {
return nil, debugerror.Errorf("configuration required")
}
// derive this from a higher context.
ctx := context.TODO()
n = &IpfsNode{
onlineMode: online,
Config: cfg,
}
n.ContextCloser = ctxc.NewContextCloser(ctx, n.teardown)
// setup datastore.
if n.Datastore, err = makeDatastore(cfg.Datastore); err != nil {
return nil, debugerror.Wrap(err)
}
// setup peerstore + local peer identity
n.Peerstore = peer.NewPeerstore()
n.Identity, err = initIdentity(&n.Config.Identity, n.Peerstore, online)
if err != nil {
return nil, debugerror.Wrap(err)
}
// setup online services
if online {
dhtService := netservice.NewService(ctx, nil) // nil handler for now, need to patch it
exchangeService := netservice.NewService(ctx, nil) // nil handler for now, need to patch it
diagService := netservice.NewService(ctx, nil) // nil handler for now, need to patch it
muxMap := &mux.ProtocolMap{
mux.ProtocolID_Routing: dhtService,
mux.ProtocolID_Exchange: exchangeService,
mux.ProtocolID_Diagnostic: diagService,
// add protocol services here.
}
// setup the network
listenAddrs, err := listenAddresses(cfg)
if err != nil {
return nil, debugerror.Wrap(err)
}
n.Network, err = inet.NewIpfsNetwork(ctx, listenAddrs, n.Identity, n.Peerstore, muxMap)
if err != nil {
return nil, debugerror.Wrap(err)
}
n.AddCloserChild(n.Network)
// setup diagnostics service
n.Diagnostics = diag.NewDiagnostics(n.Identity, n.Network, diagService)
diagService.SetHandler(n.Diagnostics)
// setup routing service
dhtRouting := dht.NewDHT(ctx, n.Identity, n.Peerstore, n.Network, dhtService, n.Datastore)
dhtRouting.Validators[IpnsValidatorTag] = namesys.ValidateIpnsRecord
// TODO(brian): perform this inside NewDHT factory method
dhtService.SetHandler(dhtRouting) // wire the handler to the service.
n.Routing = dhtRouting
n.AddCloserChild(dhtRouting)
// setup exchange service
const alwaysSendToPeer = true // use YesManStrategy
bitswapNetwork := bsnet.NewFromIpfsNetwork(exchangeService, n.Network)
n.Exchange = bitswap.New(ctx, n.Identity, bitswapNetwork, n.Routing, n.Datastore, alwaysSendToPeer)
go initConnections(ctx, n.Config, n.Peerstore, dhtRouting)
}
// TODO(brian): when offline instantiate the BlockService with a bitswap
// session that simply doesn't return blocks
n.Blocks, err = bserv.NewBlockService(n.Datastore, n.Exchange)
if err != nil {
return nil, debugerror.Wrap(err)
}
n.DAG = merkledag.NewDAGService(n.Blocks)
n.Namesys = namesys.NewNameSystem(n.Routing)
n.Pinning, err = pin.LoadPinner(n.Datastore, n.DAG)
if err != nil {
n.Pinning = pin.NewPinner(n.Datastore, n.DAG)
}
n.Resolver = &path.Resolver{DAG: n.DAG}
success = true
return n, nil
}