lotus/chain/deals/handler_states.go

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package deals
import (
"context"
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"github.com/filecoin-project/go-lotus/lib/sectorbuilder"
files "github.com/ipfs/go-ipfs-files"
"github.com/ipfs/go-merkledag"
unixfile "github.com/ipfs/go-unixfs/file"
"golang.org/x/xerrors"
)
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type handlerFunc func(ctx context.Context, deal MinerDeal) (func(*MinerDeal), error)
func (h *Handler) handle(ctx context.Context, deal MinerDeal, cb handlerFunc, next DealState) {
go func() {
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mut, err := cb(ctx, deal)
select {
case h.updated <- dealUpdate{
newState: next,
id: deal.ProposalCid,
err: err,
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mut: mut,
}:
case <-h.stop:
}
}()
}
// ACCEPTED
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func (h *Handler) accept(ctx context.Context, deal MinerDeal) (func(*MinerDeal), error) {
switch deal.Proposal.SerializationMode {
//case SerializationRaw:
//case SerializationIPLD:
case SerializationUnixFs:
default:
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return nil, xerrors.Errorf("deal proposal with unsupported serialization: %s", deal.Proposal.SerializationMode)
}
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// TODO: check payment
log.Info("fetching data for a deal")
err := h.sendSignedResponse(StorageDealResponse{
State: Accepted,
Message: "",
Proposal: deal.ProposalCid,
})
if err != nil {
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return nil, err
}
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return nil, merkledag.FetchGraph(ctx, deal.Ref, h.dag)
}
// STAGED
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func (h *Handler) staged(ctx context.Context, deal MinerDeal) (func(*MinerDeal), error) {
err := h.sendSignedResponse(StorageDealResponse{
State: Staged,
Proposal: deal.ProposalCid,
})
if err != nil {
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log.Warnf("Sending deal response failed: %s", err)
}
root, err := h.dag.Get(ctx, deal.Ref)
if err != nil {
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return nil, xerrors.Errorf("failed to get file root for deal: %s", err)
}
// TODO: abstract this away into ReadSizeCloser + implement different modes
n, err := unixfile.NewUnixfsFile(ctx, h.dag, root)
if err != nil {
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return nil, xerrors.Errorf("cannot open unixfs file: %s", err)
}
uf, ok := n.(files.File)
if !ok {
// we probably got directory, unsupported for now
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return nil, xerrors.Errorf("unsupported unixfs type")
}
size, err := uf.Size()
if err != nil {
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return nil, xerrors.Errorf("failed to get file size: %s", err)
}
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sectorID, err := h.secst.AddPiece(deal.Proposal.PieceRef, uint64(size), uf, deal.Proposal.Duration)
if err != nil {
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return nil, xerrors.Errorf("AddPiece failed: %s", err)
}
log.Warnf("New Sector: %d", sectorID)
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return func(deal *MinerDeal) {
deal.SectorID = sectorID
}, nil
}
// SEALING
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func getInclusionProof(ref string, status sectorbuilder.SectorSealingStatus) (PieceInclusionProof, error) {
for i, p := range status.Pieces {
if p.Key == ref {
return PieceInclusionProof{
Position: uint64(i),
ProofElements: p.InclusionProof,
}, nil
}
}
return PieceInclusionProof{}, xerrors.Errorf("pieceInclusionProof for %s in sector %d not found", ref, status.SectorID)
}
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func (h *Handler) waitSealed(deal MinerDeal) (sectorbuilder.SectorSealingStatus, error) {
status, err := h.secst.WaitSeal(context.TODO(), deal.SectorID)
if err != nil {
return sectorbuilder.SectorSealingStatus{}, err
}
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switch status.SealStatusCode {
case 0: // sealed
case 2: // failed
return sectorbuilder.SectorSealingStatus{}, xerrors.Errorf("sealing sector %d for deal %s (ref=%s) failed: %s", deal.SectorID, deal.ProposalCid, deal.Ref, status.SealErrorMsg)
case 1: // pending
return sectorbuilder.SectorSealingStatus{}, xerrors.Errorf("sector status was 'pending' after call to WaitSeal (for sector %d)", deal.SectorID)
case 3: // sealing
return sectorbuilder.SectorSealingStatus{}, xerrors.Errorf("sector status was 'wait' after call to WaitSeal (for sector %d)", deal.SectorID)
default:
return sectorbuilder.SectorSealingStatus{}, xerrors.Errorf("unknown SealStatusCode: %d", status.SectorID)
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}
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return status, nil
}
func (h *Handler) sealing(ctx context.Context, deal MinerDeal) (func(*MinerDeal), error) {
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status, err := h.waitSealed(deal)
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if err != nil {
return nil, err
}
ip, err := getInclusionProof(deal.Ref.String(), status)
if err != nil {
return nil, err
}
err = h.sendSignedResponse(StorageDealResponse{
State: Sealing,
Proposal: deal.ProposalCid,
PieceInclusionProof: ip,
})
if err != nil {
log.Warnf("Sending deal response failed: %s", err)
}
return nil, nil
}