lotus/garbage.go

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package sealing
import (
"bytes"
"context"
"io"
"math"
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"math/bits"
"math/rand"
sectorbuilder "github.com/filecoin-project/go-sectorbuilder"
"golang.org/x/xerrors"
"github.com/filecoin-project/lotus/chain/actors"
"github.com/filecoin-project/lotus/chain/types"
)
func (m *Sealing) pledgeReader(size uint64, parts uint64) io.Reader {
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parts = 1 << bits.Len64(parts) // round down to nearest power of 2
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if size/parts < 127 {
parts = size / 127
}
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piece := sectorbuilder.UserBytesForSectorSize((size/127 + size) / parts)
readers := make([]io.Reader, parts)
for i := range readers {
readers[i] = io.LimitReader(rand.New(rand.NewSource(42+int64(i))), int64(piece))
}
return io.MultiReader(readers...)
}
func (m *Sealing) pledgeSector(ctx context.Context, sectorID uint64, existingPieceSizes []uint64, sizes ...uint64) ([]Piece, error) {
if len(sizes) == 0 {
return nil, nil
}
log.Infof("Pledge %d, contains %+v", sectorID, existingPieceSizes)
deals := make([]actors.StorageDealProposal, len(sizes))
for i, size := range sizes {
commP, err := m.fastPledgeCommitment(size, uint64(1))
if err != nil {
return nil, err
}
sdp := actors.StorageDealProposal{
PieceRef: commP[:],
PieceSize: size,
Client: m.worker,
Provider: m.maddr,
ProposalExpiration: math.MaxUint64,
Duration: math.MaxUint64 / 2, // /2 because overflows
StoragePricePerEpoch: types.NewInt(0),
StorageCollateral: types.NewInt(0),
ProposerSignature: nil, // nil because self dealing
}
deals[i] = sdp
}
log.Infof("Publishing deals for %d", sectorID)
params, aerr := actors.SerializeParams(&actors.PublishStorageDealsParams{
Deals: deals,
})
if aerr != nil {
return nil, xerrors.Errorf("serializing PublishStorageDeals params failed: ", aerr)
}
smsg, err := m.api.MpoolPushMessage(ctx, &types.Message{
To: actors.StorageMarketAddress,
From: m.worker,
Value: types.NewInt(0),
GasPrice: types.NewInt(0),
GasLimit: types.NewInt(1000000),
Method: actors.SMAMethods.PublishStorageDeals,
Params: params,
})
if err != nil {
return nil, err
}
r, err := m.api.StateWaitMsg(ctx, smsg.Cid()) // TODO: more finality
if err != nil {
return nil, err
}
if r.Receipt.ExitCode != 0 {
log.Error(xerrors.Errorf("publishing deal failed: exit %d", r.Receipt.ExitCode))
}
var resp actors.PublishStorageDealResponse
if err := resp.UnmarshalCBOR(bytes.NewReader(r.Receipt.Return)); err != nil {
return nil, err
}
if len(resp.DealIDs) != len(sizes) {
return nil, xerrors.New("got unexpected number of DealIDs from PublishStorageDeals")
}
log.Infof("Deals for sector %d: %+v", sectorID, resp.DealIDs)
out := make([]Piece, len(sizes))
for i, size := range sizes {
ppi, err := m.sb.AddPiece(ctx, size, sectorID, m.pledgeReader(size, uint64(1)), existingPieceSizes)
if err != nil {
return nil, xerrors.Errorf("add piece: %w", err)
}
existingPieceSizes = append(existingPieceSizes, size)
out[i] = Piece{
DealID: resp.DealIDs[i],
Size: ppi.Size,
CommP: ppi.CommP[:],
}
}
return out, nil
}
func (m *Sealing) PledgeSector() error {
go func() {
ctx := context.TODO() // we can't use the context from command which invokes
// this, as we run everything here async, and it's cancelled when the
// command exits
size := sectorbuilder.UserBytesForSectorSize(m.sb.SectorSize())
sid, err := m.sb.AcquireSectorId()
if err != nil {
log.Errorf("%+v", err)
return
}
pieces, err := m.pledgeSector(ctx, sid, []uint64{}, size)
if err != nil {
log.Errorf("%+v", err)
return
}
if err := m.newSector(context.TODO(), sid, pieces[0].DealID, pieces[0].ppi()); err != nil {
log.Errorf("%+v", err)
return
}
}()
return nil
}