lotus/chain/deals/provider.go

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package deals
import (
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"context"
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"sync"
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cid "github.com/ipfs/go-cid"
datastore "github.com/ipfs/go-datastore"
"github.com/ipfs/go-datastore/namespace"
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inet "github.com/libp2p/go-libp2p-core/network"
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"github.com/libp2p/go-libp2p-core/peer"
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"golang.org/x/xerrors"
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"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/chain/actors"
"github.com/filecoin-project/lotus/chain/address"
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/lotus/lib/cborrpc"
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"github.com/filecoin-project/lotus/lib/statestore"
"github.com/filecoin-project/lotus/node/modules/dtypes"
"github.com/filecoin-project/lotus/storage"
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"github.com/filecoin-project/lotus/storage/sectorblocks"
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)
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type MinerDeal struct {
Client peer.ID
Proposal actors.StorageDealProposal
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ProposalCid cid.Cid
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State api.DealState
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Ref cid.Cid
DealID uint64
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SectorID uint64 // Set when State >= DealStaged
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s inet.Stream
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}
type Provider struct {
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pricePerByteBlock types.BigInt // how much we want for storing one byte for one block
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minPieceSize uint64
ask *types.SignedStorageAsk
askLk sync.Mutex
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secb *sectorblocks.SectorBlocks
sminer *storage.Miner
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full api.FullNode
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// TODO: Use a custom protocol or graphsync in the future
// TODO: GC
dag dtypes.StagingDAG
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deals *statestore.StateStore
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ds dtypes.MetadataDS
conns map[cid.Cid]inet.Stream
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actor address.Address
incoming chan MinerDeal
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updated chan minerDealUpdate
stop chan struct{}
stopped chan struct{}
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}
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type minerDealUpdate struct {
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newState api.DealState
id cid.Cid
err error
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mut func(*MinerDeal)
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}
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func NewProvider(ds dtypes.MetadataDS, sminer *storage.Miner, secb *sectorblocks.SectorBlocks, dag dtypes.StagingDAG, fullNode api.FullNode) (*Provider, error) {
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addr, err := ds.Get(datastore.NewKey("miner-address"))
if err != nil {
return nil, err
}
minerAddress, err := address.NewFromBytes(addr)
if err != nil {
return nil, err
}
h := &Provider{
sminer: sminer,
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dag: dag,
full: fullNode,
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secb: secb,
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pricePerByteBlock: types.NewInt(3), // TODO: allow setting
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minPieceSize: 1,
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conns: map[cid.Cid]inet.Stream{},
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incoming: make(chan MinerDeal),
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updated: make(chan minerDealUpdate),
stop: make(chan struct{}),
stopped: make(chan struct{}),
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actor: minerAddress,
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deals: statestore.New(namespace.Wrap(ds, datastore.NewKey("/deals/client"))),
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ds: ds,
}
if err := h.tryLoadAsk(); err != nil {
return nil, err
}
if h.ask == nil {
// TODO: we should be fine with this state, and just say it means 'not actively accepting deals'
// for now... lets just set a price
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if err := h.SetPrice(types.NewInt(500_000_000), 1000000); err != nil {
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return nil, xerrors.Errorf("failed setting a default price: %w", err)
}
}
return h, nil
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}
func (p *Provider) Run(ctx context.Context) {
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// TODO: restore state
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go func() {
defer log.Warn("quitting deal provider loop")
defer close(p.stopped)
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for {
select {
case deal := <-p.incoming: // DealAccepted
p.onIncoming(deal)
case update := <-p.updated: // DealStaged
p.onUpdated(ctx, update)
case <-p.stop:
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return
}
}
}()
}
func (p *Provider) onIncoming(deal MinerDeal) {
log.Info("incoming deal")
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p.conns[deal.ProposalCid] = deal.s
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if err := p.deals.Begin(deal.ProposalCid, &deal); err != nil {
// This can happen when client re-sends proposal
p.failDeal(deal.ProposalCid, err)
log.Errorf("deal tracking failed: %s", err)
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return
}
go func() {
p.updated <- minerDealUpdate{
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newState: api.DealAccepted,
id: deal.ProposalCid,
err: nil,
}
}()
}
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func (p *Provider) onUpdated(ctx context.Context, update minerDealUpdate) {
log.Infof("Deal %s updated state to %d", update.id, update.newState)
if update.err != nil {
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log.Errorf("deal %s (newSt: %d) failed: %+v", update.id, update.newState, update.err)
p.failDeal(update.id, update.err)
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return
}
var deal MinerDeal
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err := p.deals.Mutate(update.id, func(d *MinerDeal) error {
d.State = update.newState
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if update.mut != nil {
update.mut(d)
}
deal = *d
return nil
})
if err != nil {
p.failDeal(update.id, err)
return
}
switch update.newState {
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case api.DealAccepted:
p.handle(ctx, deal, p.accept, api.DealStaged)
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case api.DealStaged:
p.handle(ctx, deal, p.staged, api.DealSealing)
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case api.DealSealing:
p.handle(ctx, deal, p.sealing, api.DealComplete)
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case api.DealComplete:
p.handle(ctx, deal, p.complete, api.DealNoUpdate)
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}
}
func (p *Provider) newDeal(s inet.Stream, proposal actors.StorageDealProposal) (MinerDeal, error) {
proposalNd, err := cborrpc.AsIpld(&proposal)
if err != nil {
return MinerDeal{}, err
}
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ref, err := cid.Cast(proposal.PieceRef)
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if err != nil {
return MinerDeal{}, err
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}
return MinerDeal{
Client: s.Conn().RemotePeer(),
Proposal: proposal,
ProposalCid: proposalNd.Cid(),
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State: api.DealUnknown,
Ref: ref,
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s: s,
}, nil
}
func (p *Provider) HandleStream(s inet.Stream) {
log.Info("Handling storage deal proposal!")
proposal, err := p.readProposal(s)
if err != nil {
log.Error(err)
s.Close()
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return
}
deal, err := p.newDeal(s, proposal)
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if err != nil {
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log.Error(err)
s.Close()
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return
}
p.incoming <- deal
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}
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func (p *Provider) Stop() {
close(p.stop)
<-p.stopped
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}