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sealer_cgo.go
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sealer_cgo.go
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//go:build cgo
// +build cgo
package impl
import (
"bytes"
"context"
"crypto/rand"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"io"
"math/bits"
"os"
"runtime"
"github.com/filecoin-project/go-commp-utils/zerocomm"
"github.com/ipfs/go-cid"
ffi "github.com/filecoin-project/filecoin-ffi"
rlepluslazy "github.com/filecoin-project/go-bitfield/rle"
commpffi "github.com/filecoin-project/go-commp-utils/ffiwrapper"
commcid "github.com/filecoin-project/go-fil-commcid"
"github.com/filecoin-project/go-state-types/abi"
"github.com/filecoin-project/specs-storage/storage"
"github.com/filecoin-project/venus/pkg/util/fr32"
"github.com/filecoin-project/venus/pkg/util/storiface"
)
var _ Storage = &Sealer{}
func New(sectors SectorProvider) (*Sealer, error) {
sb := &Sealer{
sectors: sectors,
stopping: make(chan struct{}),
}
return sb, nil
}
func (sb *Sealer) NewSector(ctx context.Context, sector storage.SectorRef) error {
// TODO: Allocate the sector here instead of in addpiece
return nil
}
func (sb *Sealer) AddPiece(ctx context.Context, sector storage.SectorRef, existingPieceSizes []abi.UnpaddedPieceSize, pieceSize abi.UnpaddedPieceSize, file storage.Data) (abi.PieceInfo, error) {
// TODO: allow tuning those:
chunk := abi.PaddedPieceSize(4 << 20)
parallel := runtime.NumCPU()
var offset abi.UnpaddedPieceSize
for _, size := range existingPieceSizes {
offset += size
}
ssize, err := sector.ProofType.SectorSize()
if err != nil {
return abi.PieceInfo{}, err
}
maxPieceSize := abi.PaddedPieceSize(ssize)
if offset.Padded()+pieceSize.Padded() > maxPieceSize {
return abi.PieceInfo{}, fmt.Errorf("can't add %d byte piece to sector %v with %d bytes of existing pieces", pieceSize, sector, offset)
}
var done func()
var stagedFile *partialFile
defer func() {
if done != nil {
done()
}
if stagedFile != nil {
if err := stagedFile.Close(); err != nil {
log.Errorf("closing staged file: %+v", err)
}
}
}()
var stagedPath storiface.SectorPaths
if len(existingPieceSizes) == 0 {
stagedPath, done, err = sb.sectors.AcquireSector(ctx, sector, 0, storiface.FTUnsealed, storiface.PathSealing)
if err != nil {
return abi.PieceInfo{}, fmt.Errorf("acquire unsealed sector: %w", err)
}
stagedFile, err = createPartialFile(maxPieceSize, stagedPath.Unsealed)
if err != nil {
return abi.PieceInfo{}, fmt.Errorf("creating unsealed sector file: %w", err)
}
} else {
stagedPath, done, err = sb.sectors.AcquireSector(ctx, sector, storiface.FTUnsealed, 0, storiface.PathSealing)
if err != nil {
return abi.PieceInfo{}, fmt.Errorf("acquire unsealed sector: %w", err)
}
stagedFile, err = openPartialFile(maxPieceSize, stagedPath.Unsealed)
if err != nil {
return abi.PieceInfo{}, fmt.Errorf("opening unsealed sector file: %w", err)
}
}
w, err := stagedFile.Writer(storiface.UnpaddedByteIndex(offset).Padded(), pieceSize.Padded())
if err != nil {
return abi.PieceInfo{}, fmt.Errorf("getting partial file writer: %w", err)
}
pw := fr32.NewPadWriter(w)
pr := io.TeeReader(io.LimitReader(file, int64(pieceSize)), pw)
throttle := make(chan []byte, parallel)
piecePromises := make([]func() (abi.PieceInfo, error), 0)
buf := make([]byte, chunk.Unpadded())
for i := 0; i < parallel; i++ {
if abi.UnpaddedPieceSize(i)*chunk.Unpadded() >= pieceSize {
break // won't use this many buffers
}
throttle <- make([]byte, chunk.Unpadded())
}
for {
var read int
for rbuf := buf; len(rbuf) > 0; {
n, err := pr.Read(rbuf)
if err != nil && err != io.EOF {
return abi.PieceInfo{}, fmt.Errorf("pr read error: %w", err)
}
rbuf = rbuf[n:]
read += n
if err == io.EOF {
break
}
}
if read == 0 {
break
}
done := make(chan struct {
cid.Cid
error
}, 1)
pbuf := <-throttle
copy(pbuf, buf[:read])
go func(read int) {
defer func() {
throttle <- pbuf
}()
c, err := sb.pieceCid(sector.ProofType, pbuf[:read])
done <- struct {
cid.Cid
error
}{c, err}
}(read)
piecePromises = append(piecePromises, func() (abi.PieceInfo, error) {
select {
case e := <-done:
if e.error != nil {
return abi.PieceInfo{}, e.error
}
return abi.PieceInfo{
Size: abi.UnpaddedPieceSize(len(buf[:read])).Padded(),
PieceCID: e.Cid,
}, nil
case <-ctx.Done():
return abi.PieceInfo{}, ctx.Err()
}
})
}
if err := pw.Close(); err != nil {
return abi.PieceInfo{}, fmt.Errorf("closing padded writer: %w", err)
}
if err := stagedFile.MarkAllocated(storiface.UnpaddedByteIndex(offset).Padded(), pieceSize.Padded()); err != nil {
return abi.PieceInfo{}, fmt.Errorf("marking data range as allocated: %w", err)
}
if err := stagedFile.Close(); err != nil {
return abi.PieceInfo{}, err
}
stagedFile = nil
if len(piecePromises) == 1 {
return piecePromises[0]()
}
pieceCids := make([]abi.PieceInfo, len(piecePromises))
for i, promise := range piecePromises {
pieceCids[i], err = promise()
if err != nil {
return abi.PieceInfo{}, err
}
}
pieceCID, err := ffi.GenerateUnsealedCID(sector.ProofType, pieceCids)
if err != nil {
return abi.PieceInfo{}, fmt.Errorf("generate unsealed CID: %w", err)
}
// validate that the pieceCID was properly formed
if _, err := commcid.CIDToPieceCommitmentV1(pieceCID); err != nil {
return abi.PieceInfo{}, err
}
return abi.PieceInfo{
Size: pieceSize.Padded(),
PieceCID: pieceCID,
}, nil
}
func (sb *Sealer) pieceCid(spt abi.RegisteredSealProof, in []byte) (cid.Cid, error) {
prf, werr, err := commpffi.ToReadableFile(bytes.NewReader(in), int64(len(in)))
if err != nil {
return cid.Undef, fmt.Errorf("getting tee reader pipe: %w", err)
}
pieceCID, err := ffi.GeneratePieceCIDFromFile(spt, prf, abi.UnpaddedPieceSize(len(in)))
if err != nil {
return cid.Undef, fmt.Errorf("generating piece commitment: %w", err)
}
_ = prf.Close()
return pieceCID, werr()
}
func (sb *Sealer) SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (out storage.PreCommit1Out, err error) {
paths, done, err := sb.sectors.AcquireSector(ctx, sector, storiface.FTUnsealed, storiface.FTSealed|storiface.FTCache, storiface.PathSealing)
if err != nil {
return nil, fmt.Errorf("acquiring sector paths: %w", err)
}
defer done()
e, err := os.OpenFile(paths.Sealed, os.O_RDWR|os.O_CREATE, 0o644) // nolint:gosec
if err != nil {
return nil, fmt.Errorf("ensuring sealed file exists: %w", err)
}
if err := e.Close(); err != nil {
return nil, err
}
if err := os.Mkdir(paths.Cache, 0o755); err != nil { // nolint
if os.IsExist(err) {
log.Warnf("existing cache in %s; removing", paths.Cache)
if err := os.RemoveAll(paths.Cache); err != nil {
return nil, fmt.Errorf("remove existing sector cache from %s (sector %d): %w", paths.Cache, sector, err)
}
if err := os.Mkdir(paths.Cache, 0o755); err != nil { // nolint:gosec
return nil, fmt.Errorf("mkdir cache path after cleanup: %w", err)
}
} else {
return nil, err
}
}
var sum abi.UnpaddedPieceSize
for _, piece := range pieces {
sum += piece.Size.Unpadded()
}
ssize, err := sector.ProofType.SectorSize()
if err != nil {
return nil, err
}
ussize := abi.PaddedPieceSize(ssize).Unpadded()
if sum != ussize {
return nil, fmt.Errorf("aggregated piece sizes don't match sector size: %d != %d (%d)", sum, ussize, int64(ussize-sum))
}
// TODO: context cancellation respect
p1o, err := ffi.SealPreCommitPhase1(
sector.ProofType,
paths.Cache,
paths.Unsealed,
paths.Sealed,
sector.ID.Number,
sector.ID.Miner,
ticket,
pieces,
)
if err != nil {
return nil, fmt.Errorf("presealing sector %d (%s): %w", sector.ID.Number, paths.Unsealed, err)
}
p1odec := map[string]interface{}{}
if err := json.Unmarshal(p1o, &p1odec); err != nil {
return nil, fmt.Errorf("unmarshaling pc1 output: %w", err)
}
p1odec["_lotus_SealRandomness"] = ticket
return json.Marshal(&p1odec)
}
var PC2CheckRounds = 3
func (sb *Sealer) SealPreCommit2(ctx context.Context, sector storage.SectorRef, phase1Out storage.PreCommit1Out) (storage.SectorCids, error) {
paths, done, err := sb.sectors.AcquireSector(ctx, sector, storiface.FTSealed|storiface.FTCache, 0, storiface.PathSealing)
if err != nil {
return storage.SectorCids{}, fmt.Errorf("acquiring sector paths: %w", err)
}
defer done()
sealedCID, unsealedCID, err := ffi.SealPreCommitPhase2(phase1Out, paths.Cache, paths.Sealed)
if err != nil {
return storage.SectorCids{}, fmt.Errorf("presealing sector %d (%s): %w", sector.ID.Number, paths.Unsealed, err)
}
ssize, err := sector.ProofType.SectorSize()
if err != nil {
return storage.SectorCids{}, fmt.Errorf("get ssize: %w", err)
}
p1odec := map[string]interface{}{}
if err := json.Unmarshal(phase1Out, &p1odec); err != nil {
return storage.SectorCids{}, fmt.Errorf("unmarshaling pc1 output: %w", err)
}
var ticket abi.SealRandomness
ti, found := p1odec["_lotus_SealRandomness"]
if found {
ticket, err = base64.StdEncoding.DecodeString(ti.(string))
if err != nil {
return storage.SectorCids{}, fmt.Errorf("decoding ticket: %w", err)
}
for i := 0; i < PC2CheckRounds; i++ {
var sd [32]byte
_, _ = rand.Read(sd[:])
_, err := ffi.SealCommitPhase1(
sector.ProofType,
sealedCID,
unsealedCID,
paths.Cache,
paths.Sealed,
sector.ID.Number,
sector.ID.Miner,
ticket,
sd[:],
[]abi.PieceInfo{{Size: abi.PaddedPieceSize(ssize), PieceCID: unsealedCID}},
)
if err != nil {
log.Warn("checking PreCommit failed: ", err)
log.Warnf("num:%d tkt:%v seed:%v sealedCID:%v, unsealedCID:%v", sector.ID.Number, ticket, sd[:], sealedCID, unsealedCID)
return storage.SectorCids{}, fmt.Errorf("checking PreCommit failed: %w", err)
}
}
}
return storage.SectorCids{
Unsealed: unsealedCID,
Sealed: sealedCID,
}, nil
}
func (sb *Sealer) FinalizeSector(ctx context.Context, sector storage.SectorRef, keepUnsealed []storage.Range) error {
ssize, err := sector.ProofType.SectorSize()
if err != nil {
return err
}
maxPieceSize := abi.PaddedPieceSize(ssize)
if len(keepUnsealed) > 0 {
sr := pieceRun(0, maxPieceSize)
for _, s := range keepUnsealed {
si := &rlepluslazy.RunSliceIterator{}
if s.Offset != 0 {
si.Runs = append(si.Runs, rlepluslazy.Run{Val: false, Len: uint64(s.Offset)})
}
si.Runs = append(si.Runs, rlepluslazy.Run{Val: true, Len: uint64(s.Size)})
var err error
sr, err = rlepluslazy.Subtract(sr, si)
if err != nil {
return err
}
}
paths, done, err := sb.sectors.AcquireSector(ctx, sector, storiface.FTUnsealed, 0, storiface.PathStorage)
if err != nil {
return fmt.Errorf("acquiring sector cache path: %w", err)
}
defer done()
pf, err := openPartialFile(maxPieceSize, paths.Unsealed)
if err == nil {
var at uint64
for sr.HasNext() {
r, err := sr.NextRun()
if err != nil {
_ = pf.Close()
return err
}
offset := at
at += r.Len
if !r.Val {
continue
}
err = pf.Free(storiface.PaddedByteIndex(abi.UnpaddedPieceSize(offset).Padded()), abi.UnpaddedPieceSize(r.Len).Padded())
if err != nil {
_ = pf.Close()
return fmt.Errorf("free partial file range: %w", err)
}
}
if err := pf.Close(); err != nil {
return err
}
} else {
if !errors.Is(err, os.ErrNotExist) {
return fmt.Errorf("opening partial file: %w", err)
}
}
}
paths, done, err := sb.sectors.AcquireSector(ctx, sector, storiface.FTCache, 0, storiface.PathStorage)
if err != nil {
return fmt.Errorf("acquiring sector cache path: %w", err)
}
defer done()
return ffi.ClearCache(uint64(ssize), paths.Cache)
}
func GetRequiredPadding(oldLength abi.PaddedPieceSize, newPieceLength abi.PaddedPieceSize) ([]abi.PaddedPieceSize, abi.PaddedPieceSize) {
padPieces := make([]abi.PaddedPieceSize, 0)
toFill := uint64(-oldLength % newPieceLength)
n := bits.OnesCount64(toFill)
var sum abi.PaddedPieceSize
for i := 0; i < n; i++ {
next := bits.TrailingZeros64(toFill)
psize := uint64(1) << uint(next)
toFill ^= psize
padded := abi.PaddedPieceSize(psize)
padPieces = append(padPieces, padded)
sum += padded
}
return padPieces, sum
}
func GenerateUnsealedCID(proofType abi.RegisteredSealProof, pieces []abi.PieceInfo) (cid.Cid, error) {
ssize, err := proofType.SectorSize()
if err != nil {
return cid.Undef, err
}
pssize := abi.PaddedPieceSize(ssize)
allPieces := make([]abi.PieceInfo, 0, len(pieces))
if len(pieces) == 0 {
allPieces = append(allPieces, abi.PieceInfo{
Size: pssize,
PieceCID: zerocomm.ZeroPieceCommitment(pssize.Unpadded()),
})
} else {
var sum abi.PaddedPieceSize
padTo := func(pads []abi.PaddedPieceSize) {
for _, p := range pads {
allPieces = append(allPieces, abi.PieceInfo{
Size: p,
PieceCID: zerocomm.ZeroPieceCommitment(p.Unpadded()),
})
sum += p
}
}
for _, p := range pieces {
ps, _ := GetRequiredPadding(sum, p.Size)
padTo(ps)
allPieces = append(allPieces, p)
sum += p.Size
}
ps, _ := GetRequiredPadding(sum, pssize)
padTo(ps)
}
return ffi.GenerateUnsealedCID(proofType, allPieces)
}