295 lines
7.1 KiB
Go
295 lines
7.1 KiB
Go
package deals
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import (
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"context"
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"errors"
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"sync"
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cid "github.com/ipfs/go-cid"
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datastore "github.com/ipfs/go-datastore"
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"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/go-address"
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"github.com/filecoin-project/lotus/api"
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"github.com/filecoin-project/lotus/chain/actors"
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"github.com/filecoin-project/lotus/chain/types"
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"github.com/filecoin-project/lotus/datatransfer"
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"github.com/filecoin-project/go-cbor-util"
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"github.com/filecoin-project/lotus/lib/statestore"
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"github.com/filecoin-project/lotus/node/modules/dtypes"
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"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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var ProviderDsPrefix = "/deals/provider"
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type MinerDeal struct {
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Client peer.ID
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Proposal actors.StorageDealProposal
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ProposalCid cid.Cid
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State api.DealState
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Ref cid.Cid
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DealID uint64
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SectorID uint64 // Set when State >= DealStaged
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s inet.Stream
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}
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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
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ask *types.SignedStorageAsk
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askLk sync.Mutex
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secb *sectorblocks.SectorBlocks
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sminer *storage.Miner
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full api.FullNode
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// TODO: This will go away once storage market module + CAR
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// is implemented
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dag dtypes.StagingDAG
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// dataTransfer is the manager of data transfers used by this storage provider
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dataTransfer dtypes.ProviderDataTransfer
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deals *statestore.StateStore
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ds dtypes.MetadataDS
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conns map[cid.Cid]inet.Stream
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actor address.Address
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incoming chan MinerDeal
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updated chan minerDealUpdate
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stop chan struct{}
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stopped chan struct{}
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}
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type minerDealUpdate struct {
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newState api.DealState
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id cid.Cid
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err error
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mut func(*MinerDeal)
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}
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var (
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// ErrDataTransferFailed means a data transfer for a deal failed
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ErrDataTransferFailed = errors.New("deal data transfer failed")
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)
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func NewProvider(ds dtypes.MetadataDS, sminer *storage.Miner, secb *sectorblocks.SectorBlocks, dag dtypes.StagingDAG, dataTransfer dtypes.ProviderDataTransfer, fullNode api.FullNode) (*Provider, error) {
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addr, err := ds.Get(datastore.NewKey("miner-address"))
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if err != nil {
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return nil, err
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}
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minerAddress, err := address.NewFromBytes(addr)
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if err != nil {
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return nil, err
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}
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h := &Provider{
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sminer: sminer,
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dag: dag,
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dataTransfer: dataTransfer,
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full: fullNode,
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secb: secb,
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pricePerByteBlock: types.NewInt(3), // TODO: allow setting
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minPieceSize: 256, // TODO: allow setting (BUT KEEP MIN 256! (because of how we fill sectors up))
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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),
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stop: make(chan struct{}),
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stopped: make(chan struct{}),
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actor: minerAddress,
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deals: statestore.New(namespace.Wrap(ds, datastore.NewKey(ProviderDsPrefix))),
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ds: ds,
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}
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if err := h.tryLoadAsk(); err != nil {
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return nil, err
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}
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if h.ask == nil {
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// TODO: we should be fine with this state, and just say it means 'not actively accepting deals'
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// 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)
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}
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}
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// register a data transfer event handler -- this will move deals from
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// accepted to staged
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h.dataTransfer.SubscribeToEvents(h.onDataTransferEvent)
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return h, nil
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}
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func (p *Provider) Run(ctx context.Context) {
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// TODO: restore state
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go func() {
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defer log.Warn("quitting deal provider loop")
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defer close(p.stopped)
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for {
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select {
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case deal := <-p.incoming: // DealAccepted
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p.onIncoming(deal)
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case update := <-p.updated: // DealStaged
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p.onUpdated(ctx, update)
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case <-p.stop:
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return
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}
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}
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}()
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}
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func (p *Provider) onIncoming(deal MinerDeal) {
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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 {
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// This can happen when client re-sends proposal
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p.failDeal(deal.ProposalCid, err)
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log.Errorf("deal tracking failed: %s", err)
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return
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}
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go func() {
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p.updated <- minerDealUpdate{
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newState: api.DealAccepted,
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id: deal.ProposalCid,
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err: nil,
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}
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}()
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}
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func (p *Provider) onUpdated(ctx context.Context, update minerDealUpdate) {
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log.Infof("Deal %s updated state to %s", update.id, api.DealStates[update.newState])
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if update.err != nil {
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log.Errorf("deal %s (newSt: %d) failed: %+v", update.id, update.newState, update.err)
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p.failDeal(update.id, update.err)
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return
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}
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var deal MinerDeal
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err := p.deals.Mutate(update.id, func(d *MinerDeal) error {
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d.State = update.newState
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if update.mut != nil {
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update.mut(d)
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}
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deal = *d
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return nil
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})
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if err != nil {
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p.failDeal(update.id, err)
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return
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}
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switch update.newState {
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case api.DealAccepted:
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p.handle(ctx, deal, p.accept, api.DealNoUpdate)
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case api.DealStaged:
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p.handle(ctx, deal, p.staged, api.DealSealing)
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case api.DealSealing:
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p.handle(ctx, deal, p.sealing, api.DealComplete)
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case api.DealComplete:
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p.handle(ctx, deal, p.complete, api.DealNoUpdate)
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}
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}
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// onDataTransferEvent is the function called when an event occurs in a data
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// transfer -- it reads the voucher to verify this even occurred in a storage
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// market deal, then, based on the data transfer event that occurred, it generates
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// and update message for the deal -- either moving to staged for a completion
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// event or moving to error if a data transfer error occurs
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func (p *Provider) onDataTransferEvent(event datatransfer.Event, channelState datatransfer.ChannelState) {
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voucher, ok := channelState.Voucher().(*StorageDataTransferVoucher)
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// if this event is for a transfer not related to storage, ignore
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if !ok {
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return
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}
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// data transfer events for opening and progress do not affect deal state
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var next api.DealState
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var err error
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var mut func(*MinerDeal)
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switch event {
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case datatransfer.Complete:
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next = api.DealStaged
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mut = func(deal *MinerDeal) {
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deal.DealID = voucher.DealID
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}
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case datatransfer.Error:
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next = api.DealFailed
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err = ErrDataTransferFailed
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default:
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// the only events we care about are complete and error
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return
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}
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select {
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case p.updated <- minerDealUpdate{
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newState: next,
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id: voucher.Proposal,
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err: err,
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mut: mut,
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}:
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case <-p.stop:
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}
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}
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func (p *Provider) newDeal(s inet.Stream, proposal Proposal) (MinerDeal, error) {
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proposalNd, err := cborutil.AsIpld(proposal.DealProposal)
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if err != nil {
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return MinerDeal{}, err
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}
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return MinerDeal{
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Client: s.Conn().RemotePeer(),
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Proposal: *proposal.DealProposal,
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ProposalCid: proposalNd.Cid(),
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State: api.DealUnknown,
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Ref: proposal.Piece,
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s: s,
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}, nil
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}
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func (p *Provider) HandleStream(s inet.Stream) {
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log.Info("Handling storage deal proposal!")
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proposal, err := p.readProposal(s)
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if err != nil {
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log.Error(err)
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s.Close()
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return
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}
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deal, err := p.newDeal(s, proposal)
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if err != nil {
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log.Errorf("%+v", err)
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s.Close()
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return
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}
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p.incoming <- deal
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}
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func (p *Provider) Stop() {
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close(p.stop)
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<-p.stopped
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}
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