lotus/chain/deals/client_states.go

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package deals
import (
"context"
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"github.com/filecoin-project/go-lotus/api"
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"golang.org/x/xerrors"
"github.com/filecoin-project/go-lotus/build"
"github.com/filecoin-project/go-lotus/lib/sectorbuilder"
)
type clientHandlerFunc func(ctx context.Context, deal ClientDeal) error
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func (c *Client) handle(ctx context.Context, deal ClientDeal, cb clientHandlerFunc, next api.DealState) {
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go func() {
err := cb(ctx, deal)
select {
case c.updated <- clientDealUpdate{
newState: next,
id: deal.ProposalCid,
err: err,
}:
case <-c.stop:
}
}()
}
func (c *Client) new(ctx context.Context, deal ClientDeal) error {
resp, err := c.readStorageDealResp(deal)
if err != nil {
return err
}
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if resp.State != api.DealAccepted {
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return xerrors.Errorf("deal wasn't accepted (State=%d)", resp.State)
}
log.Info("DEAL ACCEPTED!")
return nil
}
func (c *Client) accepted(ctx context.Context, deal ClientDeal) error {
/* data transfer happens */
resp, err := c.readStorageDealResp(deal)
if err != nil {
return err
}
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if resp.State != api.DealStaged {
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return xerrors.Errorf("deal wasn't staged (State=%d)", resp.State)
}
log.Info("DEAL STAGED!")
return nil
}
func (c *Client) staged(ctx context.Context, deal ClientDeal) error {
/* miner seals our data, hopefully */
resp, err := c.readStorageDealResp(deal)
if err != nil {
return err
}
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if resp.State != api.DealSealing {
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return xerrors.Errorf("deal wasn't sealed (State=%d)", resp.State)
}
log.Info("DEAL SEALED!")
ok, err := sectorbuilder.VerifyPieceInclusionProof(build.SectorSize, deal.Proposal.Size, deal.Proposal.CommP, resp.CommD, resp.PieceInclusionProof.ProofElements)
if err != nil {
return xerrors.Errorf("verifying piece inclusion proof in staged deal %s: %w", deal.ProposalCid, err)
}
if !ok {
return xerrors.Errorf("verifying piece inclusion proof in staged deal %s failed", deal.ProposalCid)
}
return nil
}
func (c *Client) sealing(ctx context.Context, deal ClientDeal) error {
resp, err := c.readStorageDealResp(deal)
if err != nil {
return err
}
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if resp.State != api.DealComplete {
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return xerrors.Errorf("deal wasn't complete (State=%d)", resp.State)
}
// TODO: look for the commit message on chain, negotiate better payment vouchers
log.Info("DEAL COMPLETE!!")
return nil
}