lotus/node/modules/services.go

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package modules
import (
"github.com/ipfs/go-datastore"
"github.com/ipfs/go-datastore/namespace"
eventbus "github.com/libp2p/go-eventbus"
event "github.com/libp2p/go-libp2p-core/event"
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"github.com/libp2p/go-libp2p-core/host"
"github.com/libp2p/go-libp2p-core/peer"
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pubsub "github.com/libp2p/go-libp2p-pubsub"
"go.uber.org/fx"
"golang.org/x/xerrors"
"github.com/filecoin-project/go-fil-markets/retrievalmarket"
"github.com/filecoin-project/go-fil-markets/retrievalmarket/discovery"
"github.com/filecoin-project/lotus/build"
"github.com/filecoin-project/lotus/chain"
"github.com/filecoin-project/lotus/chain/beacon"
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"github.com/filecoin-project/lotus/chain/beacon/drand"
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"github.com/filecoin-project/lotus/chain/blocksync"
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"github.com/filecoin-project/lotus/chain/messagepool"
"github.com/filecoin-project/lotus/chain/stmgr"
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"github.com/filecoin-project/lotus/chain/store"
"github.com/filecoin-project/lotus/chain/sub"
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"github.com/filecoin-project/lotus/lib/peermgr"
"github.com/filecoin-project/lotus/node/hello"
"github.com/filecoin-project/lotus/node/modules/dtypes"
"github.com/filecoin-project/lotus/node/modules/helpers"
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)
func RunHello(mctx helpers.MetricsCtx, lc fx.Lifecycle, h host.Host, svc *hello.Service) error {
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h.SetStreamHandler(hello.ProtocolID, svc.HandleStream)
sub, err := h.EventBus().Subscribe(new(event.EvtPeerIdentificationCompleted), eventbus.BufSize(1024))
if err != nil {
return xerrors.Errorf("failed to subscribe to event bus: %w", err)
}
go func() {
for evt := range sub.Out() {
pic := evt.(event.EvtPeerIdentificationCompleted)
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go func() {
if err := svc.SayHello(helpers.LifecycleCtx(mctx, lc), pic.Peer); err != nil {
log.Warnw("failed to say hello", "error", err, "peer", pic.Peer)
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return
}
}()
}
}()
return nil
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}
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func RunPeerMgr(mctx helpers.MetricsCtx, lc fx.Lifecycle, pmgr *peermgr.PeerMgr) {
go pmgr.Run(helpers.LifecycleCtx(mctx, lc))
}
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func RunBlockSync(h host.Host, svc *blocksync.BlockSyncService) {
h.SetStreamHandler(blocksync.BlockSyncProtocolID, svc.HandleStream)
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}
func HandleIncomingBlocks(mctx helpers.MetricsCtx, lc fx.Lifecycle, ps *pubsub.PubSub, s *chain.Syncer, chain *store.ChainStore, stmgr *stmgr.StateManager, h host.Host, nn dtypes.NetworkName) {
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ctx := helpers.LifecycleCtx(mctx, lc)
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blocksub, err := ps.Subscribe(build.BlocksTopic(nn))
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if err != nil {
panic(err)
}
v := sub.NewBlockValidator(
chain, stmgr,
func(p peer.ID) {
ps.BlacklistPeer(p)
h.ConnManager().TagPeer(p, "badblock", -1000)
})
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if err := ps.RegisterTopicValidator(build.BlocksTopic(nn), v.Validate); err != nil {
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panic(err)
}
go sub.HandleIncomingBlocks(ctx, blocksub, s, h.ConnManager())
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}
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func HandleIncomingMessages(mctx helpers.MetricsCtx, lc fx.Lifecycle, ps *pubsub.PubSub, mpool *messagepool.MessagePool, nn dtypes.NetworkName) {
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ctx := helpers.LifecycleCtx(mctx, lc)
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msgsub, err := ps.Subscribe(build.MessagesTopic(nn))
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if err != nil {
panic(err)
}
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v := sub.NewMessageValidator(mpool)
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if err := ps.RegisterTopicValidator(build.MessagesTopic(nn), v.Validate); err != nil {
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panic(err)
}
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go sub.HandleIncomingMessages(ctx, mpool, msgsub)
}
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func NewLocalDiscovery(ds dtypes.MetadataDS) *discovery.Local {
return discovery.NewLocal(namespace.Wrap(ds, datastore.NewKey("/deals/local")))
}
func RetrievalResolver(l *discovery.Local) retrievalmarket.PeerResolver {
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return discovery.Multi(l)
}
type RandomBeaconParams struct {
fx.In
PubSub *pubsub.PubSub `optional:"true"`
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Cs *store.ChainStore
DrandConfig dtypes.DrandConfig
}
func BuiltinDrandConfig() dtypes.DrandConfig {
return build.DrandConfig
}
func RandomBeacon(p RandomBeaconParams, _ dtypes.AfterGenesisSet) (beacon.RandomBeacon, error) {
gen, err := p.Cs.GetGenesis()
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if err != nil {
return nil, err
}
//return beacon.NewMockBeacon(build.BlockDelaySecs * time.Second)
return drand.NewDrandBeacon(gen.Timestamp, build.BlockDelaySecs, p.PubSub, p.DrandConfig)
}