Build with no cgo

Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

.circleci/config.yml

@@ -72,6 +72,8 @@ jobs:
           key: v1-go-deps-{{ arch }}-{{ checksum "/home/circleci/project/go.mod" }}
       - run:
           command: make build
+      - run:
+          command: CGO_ENABLED=0 make build
 
   test: &test
     description: |

filecoin-ffi @ 58761d3d

-Subproject commit bb699517a5904b3d2549ac97e2b0005ab6471dce
+Subproject commit 58761d3dca0f3617023240eb8b7f8b324db75b2a

go.mod

@@ -5,7 +5,7 @@ go 1.13
 require (
 	github.com/fatih/color v1.7.0 // indirect
 	github.com/filecoin-project/filecoin-ffi v0.0.0-20191219131535-bb699517a590
-	github.com/filecoin-project/go-address v0.0.0-20191219011437-af739c490b4f
+	github.com/filecoin-project/go-address v0.0.0-20200107215422-da8eea2842b5
 	github.com/filecoin-project/go-paramfetch v0.0.0-20200102181131-b20d579f2878
 	github.com/gogo/protobuf v1.3.1 // indirect
 	github.com/gopherjs/gopherjs v0.0.0-20190812055157-5d271430af9f // indirect

go.sum

@@ -15,6 +15,8 @@ github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/filecoin-project/go-address v0.0.0-20191219011437-af739c490b4f h1:L2jaVU8TvWTx7iZPhlYvUE8vkoOnj778XuKavz8W36g=
 github.com/filecoin-project/go-address v0.0.0-20191219011437-af739c490b4f/go.mod h1:rCbpXPva2NKF9/J4X6sr7hbKBgQCxyFtRj7KOZqoIms=
+github.com/filecoin-project/go-address v0.0.0-20200107215422-da8eea2842b5 h1:/MmWluswvDIbuPvBct4q6HeQgVm62O2DzWYTB38kt4A=
+github.com/filecoin-project/go-address v0.0.0-20200107215422-da8eea2842b5/go.mod h1:SAOwJoakQ8EPjwNIsiakIQKsoKdkcbx8U3IapgCg9R0=
 github.com/filecoin-project/go-crypto v0.0.0-20191218222705-effae4ea9f03 h1:2pMXdBnCiXjfCYx/hLqFxccPoqsSveQFxVLvNxy9bus=
 github.com/filecoin-project/go-crypto v0.0.0-20191218222705-effae4ea9f03/go.mod h1:+viYnvGtUTgJRdy6oaeF4MTFKAfatX071MPDPBL11EQ=
 github.com/filecoin-project/go-paramfetch v0.0.0-20200102181131-b20d579f2878 h1:YicJT9xhPzZ1SBGiJFNUCkfwqK/G9vFyY1ytKBSjNJA=

interface.go

@@ -34,6 +34,3 @@ type Verifier interface {
 	VerifyFallbackPost(ctx context.Context, sectorSize uint64, sectorInfo SortedPublicSectorInfo, challengeSeed []byte, proof []byte, candidates []EPostCandidate, proverID address.Address, faults uint64) (bool, error)
 	VerifySeal(sectorSize uint64, commR, commD []byte, proverID address.Address, ticket []byte, seed []byte, sectorID uint64, proof []byte) (bool, error)
 }
-
-var _ Verifier = ProofVerifier
-var _ Interface = &SectorBuilder{}

sectorbuild_cgo.go

+//+build cgo
+
+package sectorbuilder
+
+import (
+	"context"
+	"io"
+	"os"
+	"sync/atomic"
+
+	ffi "github.com/filecoin-project/filecoin-ffi"
+	"golang.org/x/xerrors"
+)
+
+var _ Interface = &SectorBuilder{}
+
+func (sb *SectorBuilder) AddPiece(pieceSize uint64, sectorId uint64, file io.Reader, existingPieceSizes []uint64) (PublicPieceInfo, error) {
+	fs := sb.filesystem
+
+	if err := fs.reserve(dataStaging, sb.ssize); err != nil {
+		return PublicPieceInfo{}, err
+	}
+	defer fs.free(dataStaging, sb.ssize)
+
+	atomic.AddInt32(&sb.addPieceWait, 1)
+	ret := sb.RateLimit()
+	atomic.AddInt32(&sb.addPieceWait, -1)
+	defer ret()
+
+	f, werr, err := toReadableFile(file, int64(pieceSize))
+	if err != nil {
+		return PublicPieceInfo{}, err
+	}
+
+	stagedFile, err := sb.stagedSectorFile(sectorId)
+	if err != nil {
+		return PublicPieceInfo{}, err
+	}
+
+	_, _, commP, err := ffi.WriteWithAlignment(f, pieceSize, stagedFile, existingPieceSizes)
+	if err != nil {
+		return PublicPieceInfo{}, err
+	}
+
+	if err := stagedFile.Close(); err != nil {
+		return PublicPieceInfo{}, err
+	}
+
+	if err := f.Close(); err != nil {
+		return PublicPieceInfo{}, err
+	}
+
+	return PublicPieceInfo{
+		Size:  pieceSize,
+		CommP: commP,
+	}, werr()
+}
+
+func (sb *SectorBuilder) ReadPieceFromSealedSector(sectorID uint64, offset uint64, size uint64, ticket []byte, commD []byte) (io.ReadCloser, error) {
+	fs := sb.filesystem
+
+	if err := fs.reserve(dataUnsealed, sb.ssize); err != nil { // TODO: this needs to get smarter when we start supporting partial unseals
+		return nil, err
+	}
+	defer fs.free(dataUnsealed, sb.ssize)
+
+	atomic.AddInt32(&sb.unsealWait, 1)
+	// TODO: Don't wait if cached
+	ret := sb.RateLimit() // TODO: check perf, consider remote unseal worker
+	defer ret()
+	atomic.AddInt32(&sb.unsealWait, -1)
+
+	sb.unsealLk.Lock() // TODO: allow unsealing unrelated sectors in parallel
+	defer sb.unsealLk.Unlock()
+
+	cacheDir, err := sb.sectorCacheDir(sectorID)
+	if err != nil {
+		return nil, err
+	}
+
+	sealedPath, err := sb.SealedSectorPath(sectorID)
+	if err != nil {
+		return nil, err
+	}
+
+	unsealedPath := sb.unsealedSectorPath(sectorID)
+
+	// TODO: GC for those
+	//  (Probably configurable count of sectors to be kept unsealed, and just
+	//   remove last used one (or use whatever other cache policy makes sense))
+	f, err := os.OpenFile(unsealedPath, os.O_RDONLY, 0644)
+	if err != nil {
+		if !os.IsNotExist(err) {
+			return nil, err
+		}
+
+		var commd [CommLen]byte
+		copy(commd[:], commD)
+
+		var tkt [CommLen]byte
+		copy(tkt[:], ticket)
+
+		err = ffi.Unseal(sb.ssize,
+			PoRepProofPartitions,
+			cacheDir,
+			sealedPath,
+			unsealedPath,
+			sectorID,
+			addressToProverID(sb.Miner),
+			tkt,
+			commd)
+		if err != nil {
+			return nil, xerrors.Errorf("unseal failed: %w", err)
+		}
+
+		f, err = os.OpenFile(unsealedPath, os.O_RDONLY, 0644)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if _, err := f.Seek(int64(offset), io.SeekStart); err != nil {
+		return nil, xerrors.Errorf("seek: %w", err)
+	}
+
+	lr := io.LimitReader(f, int64(size))
+
+	return &struct {
+		io.Reader
+		io.Closer
+	}{
+		Reader: lr,
+		Closer: f,
+	}, nil
+}
+
+func (sb *SectorBuilder) SealPreCommit(ctx context.Context, sectorID uint64, ticket SealTicket, pieces []PublicPieceInfo) (RawSealPreCommitOutput, error) {
+	fs := sb.filesystem
+
+	if err := fs.reserve(dataCache, sb.ssize); err != nil {
+		return RawSealPreCommitOutput{}, err
+	}
+	defer fs.free(dataCache, sb.ssize)
+
+	if err := fs.reserve(dataSealed, sb.ssize); err != nil {
+		return RawSealPreCommitOutput{}, err
+	}
+	defer fs.free(dataSealed, sb.ssize)
+
+	call := workerCall{
+		task: WorkerTask{
+			Type:       WorkerPreCommit,
+			TaskID:     atomic.AddUint64(&sb.taskCtr, 1),
+			SectorID:   sectorID,
+			SealTicket: ticket,
+			Pieces:     pieces,
+		},
+		ret: make(chan SealRes),
+	}
+
+	atomic.AddInt32(&sb.preCommitWait, 1)
+
+	select { // prefer remote
+	case sb.precommitTasks <- call:
+		return sb.sealPreCommitRemote(call)
+	default:
+	}
+
+	sb.checkRateLimit()
+
+	rl := sb.rateLimit
+	if sb.noPreCommit {
+		rl = make(chan struct{})
+	}
+
+	select { // use whichever is available
+	case sb.precommitTasks <- call:
+		return sb.sealPreCommitRemote(call)
+	case rl <- struct{}{}:
+	case <-ctx.Done():
+		return RawSealPreCommitOutput{}, ctx.Err()
+	}
+
+	atomic.AddInt32(&sb.preCommitWait, -1)
+
+	// local
+
+	defer func() {
+		<-sb.rateLimit
+	}()
+
+	cacheDir, err := sb.sectorCacheDir(sectorID)
+	if err != nil {
+		return RawSealPreCommitOutput{}, xerrors.Errorf("getting cache dir: %w", err)
+	}
+
+	sealedPath, err := sb.SealedSectorPath(sectorID)
+	if err != nil {
+		return RawSealPreCommitOutput{}, xerrors.Errorf("getting sealed sector path: %w", err)
+	}
+
+	e, err := os.OpenFile(sealedPath, os.O_RDWR|os.O_CREATE, 0644)
+	if err != nil {
+		return RawSealPreCommitOutput{}, xerrors.Errorf("ensuring sealed file exists: %w", err)
+	}
+	if err := e.Close(); err != nil {
+		return RawSealPreCommitOutput{}, err
+	}
+
+	var sum uint64
+	for _, piece := range pieces {
+		sum += piece.Size
+	}
+	ussize := UserBytesForSectorSize(sb.ssize)
+	if sum != ussize {
+		return RawSealPreCommitOutput{}, xerrors.Errorf("aggregated piece sizes don't match sector size: %d != %d (%d)", sum, ussize, int64(ussize-sum))
+	}
+
+	stagedPath := sb.StagedSectorPath(sectorID)
+
+	// TODO: context cancellation respect
+	rspco, err := ffi.SealPreCommit(
+		sb.ssize,
+		PoRepProofPartitions,
+		cacheDir,
+		stagedPath,
+		sealedPath,
+		sectorID,
+		addressToProverID(sb.Miner),
+		ticket.TicketBytes,
+		pieces,
+	)
+	if err != nil {
+		return RawSealPreCommitOutput{}, xerrors.Errorf("presealing sector %d (%s): %w", sectorID, stagedPath, err)
+	}
+
+	return RawSealPreCommitOutput(rspco), nil
+}
+
+func (sb *SectorBuilder) sealCommitLocal(sectorID uint64, ticket SealTicket, seed SealSeed, pieces []PublicPieceInfo, rspco RawSealPreCommitOutput) (proof []byte, err error) {
+	atomic.AddInt32(&sb.commitWait, -1)
+
+	defer func() {
+		<-sb.rateLimit
+	}()
+
+	cacheDir, err := sb.sectorCacheDir(sectorID)
+	if err != nil {
+		return nil, err
+	}
+
+	proof, err = ffi.SealCommit(
+		sb.ssize,
+		PoRepProofPartitions,
+		cacheDir,
+		sectorID,
+		addressToProverID(sb.Miner),
+		ticket.TicketBytes,
+		seed.TicketBytes,
+		pieces,
+		ffi.RawSealPreCommitOutput(rspco),
+	)
+	if err != nil {
+		log.Warn("StandaloneSealCommit error: ", err)
+		log.Warnf("sid:%d tkt:%v seed:%v, ppi:%v rspco:%v", sectorID, ticket, seed, pieces, rspco)
+
+		return nil, xerrors.Errorf("StandaloneSealCommit: %w", err)
+	}
+
+	return proof, nil
+}
+
+func (sb *SectorBuilder) SealCommit(ctx context.Context, sectorID uint64, ticket SealTicket, seed SealSeed, pieces []PublicPieceInfo, rspco RawSealPreCommitOutput) (proof []byte, err error) {
+	call := workerCall{
+		task: WorkerTask{
+			Type:       WorkerCommit,
+			TaskID:     atomic.AddUint64(&sb.taskCtr, 1),
+			SectorID:   sectorID,
+			SealTicket: ticket,
+			Pieces:     pieces,
+
+			SealSeed: seed,
+			Rspco:    rspco,
+		},
+		ret: make(chan SealRes),
+	}
+
+	atomic.AddInt32(&sb.commitWait, 1)
+
+	select { // prefer remote
+	case sb.commitTasks <- call:
+		proof, err = sb.sealCommitRemote(call)
+	default:
+		sb.checkRateLimit()
+
+		rl := sb.rateLimit
+		if sb.noCommit {
+			rl = make(chan struct{})
+		}
+
+		select { // use whichever is available
+		case sb.commitTasks <- call:
+			proof, err = sb.sealCommitRemote(call)
+		case rl <- struct{}{}:
+			proof, err = sb.sealCommitLocal(sectorID, ticket, seed, pieces, rspco)
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		}
+	}
+	if err != nil {
+		return nil, xerrors.Errorf("commit: %w", err)
+	}
+
+	return proof, nil
+}
+
+func (sb *SectorBuilder) ComputeElectionPoSt(sectorInfo SortedPublicSectorInfo, challengeSeed []byte, winners []EPostCandidate) ([]byte, error) {
+	if len(challengeSeed) != CommLen {
+		return nil, xerrors.Errorf("given challenge seed was the wrong length: %d != %d", len(challengeSeed), CommLen)
+	}
+	var cseed [CommLen]byte
+	copy(cseed[:], challengeSeed)
+
+	privsects, err := sb.pubSectorToPriv(sectorInfo, nil) // TODO: faults
+	if err != nil {
+		return nil, err
+	}
+
+	proverID := addressToProverID(sb.Miner)
+
+	return ffi.GeneratePoSt(sb.ssize, proverID, privsects, cseed, winners)
+}
+
+func (sb *SectorBuilder) GenerateEPostCandidates(sectorInfo SortedPublicSectorInfo, challengeSeed [CommLen]byte, faults []uint64) ([]EPostCandidate, error) {
+	privsectors, err := sb.pubSectorToPriv(sectorInfo, faults)
+	if err != nil {
+		return nil, err
+	}
+
+	challengeCount := ElectionPostChallengeCount(uint64(len(sectorInfo.Values())), uint64(len(faults)))
+
+	proverID := addressToProverID(sb.Miner)
+	return ffi.GenerateCandidates(sb.ssize, proverID, challengeSeed, challengeCount, privsectors)
+}
+
+func (sb *SectorBuilder) GenerateFallbackPoSt(sectorInfo SortedPublicSectorInfo, challengeSeed [CommLen]byte, faults []uint64) ([]EPostCandidate, []byte, error) {
+	privsectors, err := sb.pubSectorToPriv(sectorInfo, faults)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	challengeCount := fallbackPostChallengeCount(uint64(len(sectorInfo.Values())), uint64(len(faults)))
+
+	proverID := addressToProverID(sb.Miner)
+	candidates, err := ffi.GenerateCandidates(sb.ssize, proverID, challengeSeed, challengeCount, privsectors)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	proof, err := ffi.GeneratePoSt(sb.ssize, proverID, privsectors, challengeSeed, candidates)
+	return candidates, proof, err
+}

sectorbuilder.go

 package sectorbuilder
 
 import (
-	"context"
 	"fmt"
-	"io"
 	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
-	"sync"
 	"sync/atomic"
 
-	sectorbuilder "github.com/filecoin-project/filecoin-ffi"
+	ffi "github.com/filecoin-project/filecoin-ffi"
 	"github.com/filecoin-project/go-address"
 	datastore "github.com/ipfs/go-datastore"
 	logging "github.com/ipfs/go-log"
@@ -26,72 +23,6 @@ var lastSectorIdKey = datastore.NewKey("/last")
 
 var log = logging.Logger("sectorbuilder")
 
-type SortedPublicSectorInfo = sectorbuilder.SortedPublicSectorInfo
-type SortedPrivateSectorInfo = sectorbuilder.SortedPrivateSectorInfo
-
-type SealTicket = sectorbuilder.SealTicket
-
-type SealSeed = sectorbuilder.SealSeed
-
-type SealPreCommitOutput = sectorbuilder.SealPreCommitOutput
-
-type SealCommitOutput = sectorbuilder.SealCommitOutput
-
-type PublicPieceInfo = sectorbuilder.PublicPieceInfo
-
-type RawSealPreCommitOutput sectorbuilder.RawSealPreCommitOutput
-
-type EPostCandidate = sectorbuilder.Candidate
-
-const CommLen = sectorbuilder.CommitmentBytesLen
-
-type WorkerCfg struct {
-	NoPreCommit bool
-	NoCommit    bool
-
-	// TODO: 'cost' info, probably in terms of sealing + transfer speed
-}
-
-type SectorBuilder struct {
-	ds   datastore.Batching
-	idLk sync.Mutex
-
-	ssize  uint64
-	lastID uint64
-
-	Miner address.Address
-
-	unsealLk sync.Mutex
-
-	noCommit    bool
-	noPreCommit bool
-	rateLimit   chan struct{}
-
-	precommitTasks chan workerCall
-	commitTasks    chan workerCall
-
-	taskCtr       uint64
-	remoteLk      sync.Mutex
-	remoteCtr     int
-	remotes       map[int]*remote
-	remoteResults map[uint64]chan<- SealRes
-
-	addPieceWait  int32
-	preCommitWait int32
-	commitWait    int32
-	unsealWait    int32
-
-	fsLk       sync.Mutex //nolint: struckcheck
-	filesystem *fs        // TODO: multi-fs support
-
-	stopping chan struct{}
-}
-
-type JsonRSPCO struct {
-	CommD []byte
-	CommR []byte
-}
-
 func (rspco *RawSealPreCommitOutput) ToJson() JsonRSPCO {
 	return JsonRSPCO{
 		CommD: rspco.CommD[:],
@@ -106,21 +37,6 @@ func (rspco *JsonRSPCO) rspco() RawSealPreCommitOutput {
 	return out
 }
 
-type SealRes struct {
-	Err   string
-	GoErr error `json:"-"`
-
-	Proof []byte
-	Rspco JsonRSPCO
-}
-
-type remote struct {
-	lk sync.Mutex
-
-	sealTasks chan<- WorkerTask
-	busy      uint64 // only for metrics
-}
-
 type Config struct {
 	SectorSize uint64
 	Miner      address.Address
@@ -289,126 +205,6 @@ func (sb *SectorBuilder) AcquireSectorId() (uint64, error) {
 	return id, nil
 }
 
-func (sb *SectorBuilder) AddPiece(pieceSize uint64, sectorId uint64, file io.Reader, existingPieceSizes []uint64) (PublicPieceInfo, error) {
-	fs := sb.filesystem
-
-	if err := fs.reserve(dataStaging, sb.ssize); err != nil {
-		return PublicPieceInfo{}, err
-	}
-	defer fs.free(dataStaging, sb.ssize)
-
-	atomic.AddInt32(&sb.addPieceWait, 1)
-	ret := sb.RateLimit()
-	atomic.AddInt32(&sb.addPieceWait, -1)
-	defer ret()
-
-	f, werr, err := toReadableFile(file, int64(pieceSize))
-	if err != nil {
-		return PublicPieceInfo{}, err
-	}
-
-	stagedFile, err := sb.stagedSectorFile(sectorId)
-	if err != nil {
-		return PublicPieceInfo{}, err
-	}
-
-	_, _, commP, err := sectorbuilder.WriteWithAlignment(f, pieceSize, stagedFile, existingPieceSizes)
-	if err != nil {
-		return PublicPieceInfo{}, err
-	}
-
-	if err := stagedFile.Close(); err != nil {
-		return PublicPieceInfo{}, err
-	}
-
-	if err := f.Close(); err != nil {
-		return PublicPieceInfo{}, err
-	}
-
-	return PublicPieceInfo{
-		Size:  pieceSize,
-		CommP: commP,
-	}, werr()
-}
-
-func (sb *SectorBuilder) ReadPieceFromSealedSector(sectorID uint64, offset uint64, size uint64, ticket []byte, commD []byte) (io.ReadCloser, error) {
-	fs := sb.filesystem
-
-	if err := fs.reserve(dataUnsealed, sb.ssize); err != nil { // TODO: this needs to get smarter when we start supporting partial unseals
-		return nil, err
-	}
-	defer fs.free(dataUnsealed, sb.ssize)
-
-	atomic.AddInt32(&sb.unsealWait, 1)
-	// TODO: Don't wait if cached
-	ret := sb.RateLimit() // TODO: check perf, consider remote unseal worker
-	defer ret()
-	atomic.AddInt32(&sb.unsealWait, -1)
-
-	sb.unsealLk.Lock() // TODO: allow unsealing unrelated sectors in parallel
-	defer sb.unsealLk.Unlock()
-
-	cacheDir, err := sb.sectorCacheDir(sectorID)
-	if err != nil {
-		return nil, err
-	}
-
-	sealedPath, err := sb.SealedSectorPath(sectorID)
-	if err != nil {
-		return nil, err
-	}
-
-	unsealedPath := sb.unsealedSectorPath(sectorID)
-
-	// TODO: GC for those
-	//  (Probably configurable count of sectors to be kept unsealed, and just
-	//   remove last used one (or use whatever other cache policy makes sense))
-	f, err := os.OpenFile(unsealedPath, os.O_RDONLY, 0644)
-	if err != nil {
-		if !os.IsNotExist(err) {
-			return nil, err
-		}
-
-		var commd [CommLen]byte
-		copy(commd[:], commD)
-
-		var tkt [CommLen]byte
-		copy(tkt[:], ticket)
-
-		err = sectorbuilder.Unseal(sb.ssize,
-			PoRepProofPartitions,
-			cacheDir,
-			sealedPath,
-			unsealedPath,
-			sectorID,
-			addressToProverID(sb.Miner),
-			tkt,
-			commd)
-		if err != nil {
-			return nil, xerrors.Errorf("unseal failed: %w", err)
-		}
-
-		f, err = os.OpenFile(unsealedPath, os.O_RDONLY, 0644)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	if _, err := f.Seek(int64(offset), io.SeekStart); err != nil {
-		return nil, xerrors.Errorf("seek: %w", err)
-	}
-
-	lr := io.LimitReader(f, int64(size))
-
-	return &struct {
-		io.Reader
-		io.Closer
-	}{
-		Reader: lr,
-		Closer: f,
-	}, nil
-}
-
 func (sb *SectorBuilder) sealPreCommitRemote(call workerCall) (RawSealPreCommitOutput, error) {
 	atomic.AddInt32(&sb.preCommitWait, -1)
 
@@ -424,109 +220,6 @@ func (sb *SectorBuilder) sealPreCommitRemote(call workerCall) (RawSealPreCommitO
 	}
 }
 
-func (sb *SectorBuilder) SealPreCommit(ctx context.Context, sectorID uint64, ticket SealTicket, pieces []PublicPieceInfo) (RawSealPreCommitOutput, error) {
-	fs := sb.filesystem
-
-	if err := fs.reserve(dataCache, sb.ssize); err != nil {
-		return RawSealPreCommitOutput{}, err
-	}
-	defer fs.free(dataCache, sb.ssize)
-
-	if err := fs.reserve(dataSealed, sb.ssize); err != nil {
-		return RawSealPreCommitOutput{}, err
-	}
-	defer fs.free(dataSealed, sb.ssize)
-
-	call := workerCall{
-		task: WorkerTask{
-			Type:       WorkerPreCommit,
-			TaskID:     atomic.AddUint64(&sb.taskCtr, 1),
-			SectorID:   sectorID,
-			SealTicket: ticket,
-			Pieces:     pieces,
-		},
-		ret: make(chan SealRes),
-	}
-
-	atomic.AddInt32(&sb.preCommitWait, 1)
-
-	select { // prefer remote
-	case sb.precommitTasks <- call:
-		return sb.sealPreCommitRemote(call)
-	default:
-	}
-
-	sb.checkRateLimit()
-
-	rl := sb.rateLimit
-	if sb.noPreCommit {
-		rl = make(chan struct{})
-	}
-
-	select { // use whichever is available
-	case sb.precommitTasks <- call:
-		return sb.sealPreCommitRemote(call)
-	case rl <- struct{}{}:
-	case <-ctx.Done():
-		return RawSealPreCommitOutput{}, ctx.Err()
-	}
-
-	atomic.AddInt32(&sb.preCommitWait, -1)
-
-	// local
-
-	defer func() {
-		<-sb.rateLimit
-	}()
-
-	cacheDir, err := sb.sectorCacheDir(sectorID)
-	if err != nil {
-		return RawSealPreCommitOutput{}, xerrors.Errorf("getting cache dir: %w", err)
-	}
-
-	sealedPath, err := sb.SealedSectorPath(sectorID)
-	if err != nil {
-		return RawSealPreCommitOutput{}, xerrors.Errorf("getting sealed sector path: %w", err)
-	}
-
-	e, err := os.OpenFile(sealedPath, os.O_RDWR|os.O_CREATE, 0644)
-	if err != nil {
-		return RawSealPreCommitOutput{}, xerrors.Errorf("ensuring sealed file exists: %w", err)
-	}
-	if err := e.Close(); err != nil {
-		return RawSealPreCommitOutput{}, err
-	}
-
-	var sum uint64
-	for _, piece := range pieces {
-		sum += piece.Size
-	}
-	ussize := UserBytesForSectorSize(sb.ssize)
-	if sum != ussize {
-		return RawSealPreCommitOutput{}, xerrors.Errorf("aggregated piece sizes don't match sector size: %d != %d (%d)", sum, ussize, int64(ussize-sum))
-	}
-
-	stagedPath := sb.StagedSectorPath(sectorID)
-
-	// TODO: context cancellation respect
-	rspco, err := sectorbuilder.SealPreCommit(
-		sb.ssize,
-		PoRepProofPartitions,
-		cacheDir,
-		stagedPath,
-		sealedPath,
-		sectorID,
-		addressToProverID(sb.Miner),
-		ticket.TicketBytes,
-		pieces,
-	)
-	if err != nil {
-		return RawSealPreCommitOutput{}, xerrors.Errorf("presealing sector %d (%s): %w", sectorID, stagedPath, err)
-	}
-
-	return RawSealPreCommitOutput(rspco), nil
-}
-
 func (sb *SectorBuilder) sealCommitRemote(call workerCall) (proof []byte, err error) {
 	atomic.AddInt32(&sb.commitWait, -1)
 
@@ -541,119 +234,13 @@ func (sb *SectorBuilder) sealCommitRemote(call workerCall) (proof []byte, err er
 	}
 }
 
-func (sb *SectorBuilder) sealCommitLocal(sectorID uint64, ticket SealTicket, seed SealSeed, pieces []PublicPieceInfo, rspco RawSealPreCommitOutput) (proof []byte, err error) {
-	atomic.AddInt32(&sb.commitWait, -1)
-
-	defer func() {
-		<-sb.rateLimit
-	}()
-
-	cacheDir, err := sb.sectorCacheDir(sectorID)
-	if err != nil {
-		return nil, err
-	}
-
-	proof, err = sectorbuilder.SealCommit(
-		sb.ssize,
-		PoRepProofPartitions,
-		cacheDir,
-		sectorID,
-		addressToProverID(sb.Miner),
-		ticket.TicketBytes,
-		seed.TicketBytes,
-		pieces,
-		sectorbuilder.RawSealPreCommitOutput(rspco),
-	)
-	if err != nil {
-		log.Warn("StandaloneSealCommit error: ", err)
-		log.Warnf("sid:%d tkt:%v seed:%v, ppi:%v rspco:%v", sectorID, ticket, seed, pieces, rspco)
-
-		return nil, xerrors.Errorf("StandaloneSealCommit: %w", err)
-	}
-
-	return proof, nil
-}
-
-func (sb *SectorBuilder) SealCommit(ctx context.Context, sectorID uint64, ticket SealTicket, seed SealSeed, pieces []PublicPieceInfo, rspco RawSealPreCommitOutput) (proof []byte, err error) {
-	call := workerCall{
-		task: WorkerTask{
-			Type:       WorkerCommit,
-			TaskID:     atomic.AddUint64(&sb.taskCtr, 1),
-			SectorID:   sectorID,
-			SealTicket: ticket,
-			Pieces:     pieces,
-
-			SealSeed: seed,
-			Rspco:    rspco,
-		},
-		ret: make(chan SealRes),
-	}
-
-	atomic.AddInt32(&sb.commitWait, 1)
-
-	select { // prefer remote
-	case sb.commitTasks <- call:
-		proof, err = sb.sealCommitRemote(call)
-	default:
-		sb.checkRateLimit()
-
-		rl := sb.rateLimit
-		if sb.noCommit {
-			rl = make(chan struct{})
-		}
-
-		select { // use whichever is available
-		case sb.commitTasks <- call:
-			proof, err = sb.sealCommitRemote(call)
-		case rl <- struct{}{}:
-			proof, err = sb.sealCommitLocal(sectorID, ticket, seed, pieces, rspco)
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		}
-	}
-	if err != nil {
-		return nil, xerrors.Errorf("commit: %w", err)
-	}
-
-	return proof, nil
-}
-
-func (sb *SectorBuilder) ComputeElectionPoSt(sectorInfo SortedPublicSectorInfo, challengeSeed []byte, winners []EPostCandidate) ([]byte, error) {
-	if len(challengeSeed) != CommLen {
-		return nil, xerrors.Errorf("given challenge seed was the wrong length: %d != %d", len(challengeSeed), CommLen)
-	}
-	var cseed [CommLen]byte
-	copy(cseed[:], challengeSeed)
-
-	privsects, err := sb.pubSectorToPriv(sectorInfo, nil) // TODO: faults
-	if err != nil {
-		return nil, err
-	}
-
-	proverID := addressToProverID(sb.Miner)
-
-	return sectorbuilder.GeneratePoSt(sb.ssize, proverID, privsects, cseed, winners)
-}
-
-func (sb *SectorBuilder) GenerateEPostCandidates(sectorInfo SortedPublicSectorInfo, challengeSeed [CommLen]byte, faults []uint64) ([]EPostCandidate, error) {
-	privsectors, err := sb.pubSectorToPriv(sectorInfo, faults)
-	if err != nil {
-		return nil, err
-	}
-
-	challengeCount := ElectionPostChallengeCount(uint64(len(sectorInfo.Values())), uint64(len(faults)))
-
-	proverID := addressToProverID(sb.Miner)
-	return sectorbuilder.GenerateCandidates(sb.ssize, proverID, challengeSeed, challengeCount, privsectors)
-}
-
 func (sb *SectorBuilder) pubSectorToPriv(sectorInfo SortedPublicSectorInfo, faults []uint64) (SortedPrivateSectorInfo, error) {
 	fmap := map[uint64]struct{}{}
 	for _, fault := range faults {
 		fmap[fault] = struct{}{}
 	}
 
-	var out []sectorbuilder.PrivateSectorInfo
+	var out []ffi.PrivateSectorInfo
 	for _, s := range sectorInfo.Values() {
 		if _, faulty := fmap[s.SectorID]; faulty {
 			continue
@@ -669,36 +256,14 @@ func (sb *SectorBuilder) pubSectorToPriv(sectorInfo SortedPublicSectorInfo, faul
 			return SortedPrivateSectorInfo{}, xerrors.Errorf("getting sealed path for sector %d: %w", s.SectorID, err)
 		}
 
-		out = append(out, sectorbuilder.PrivateSectorInfo{
+		out = append(out, ffi.PrivateSectorInfo{
 			SectorID:         s.SectorID,
 			CommR:            s.CommR,
 			CacheDirPath:     cachePath,
 			SealedSectorPath: sealedPath,
 		})
 	}
-	return newSortedPrivateSectorInfo(out), nil
-}
-
-func (sb *SectorBuilder) GenerateFallbackPoSt(sectorInfo SortedPublicSectorInfo, challengeSeed [CommLen]byte, faults []uint64) ([]EPostCandidate, []byte, error) {
-	privsectors, err := sb.pubSectorToPriv(sectorInfo, faults)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	challengeCount := fallbackPostChallengeCount(uint64(len(sectorInfo.Values())), uint64(len(faults)))
-
-	proverID := addressToProverID(sb.Miner)
-	candidates, err := sectorbuilder.GenerateCandidates(sb.ssize, proverID, challengeSeed, challengeCount, privsectors)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	proof, err := sectorbuilder.GeneratePoSt(sb.ssize, proverID, privsectors, challengeSeed, candidates)
-	return candidates, proof, err
-}
-
-func (sb *SectorBuilder) Stop() {
-	close(sb.stopping)
+	return ffi.NewSortedPrivateSectorInfo(out...), nil
 }
 
 func fallbackPostChallengeCount(sectors uint64, faults uint64) uint64 {
@@ -803,3 +368,7 @@ func migrateFile(from, to string, symlink bool) error {
 
 	return dcopy.Copy(from, to)
 }
+
+func (sb *SectorBuilder) Stop() {
+	close(sb.stopping)
+}

simple.go

+//+build cgo
+
 package sectorbuilder
 
 import (
@@ -10,11 +12,14 @@ import (
 	"github.com/filecoin-project/go-address"
 )
 
+var _ Verifier = ProofVerifier
+
 func (sb *SectorBuilder) SectorSize() uint64 {
 	return sb.ssize
 }
 
-type proofVerifier struct {}
+type proofVerifier struct{}
+
 var ProofVerifier = proofVerifier{}
 
 var UserBytesForSectorSize = sectorbuilder.GetMaxUserBytesPerStagedSector

types.go

+package sectorbuilder
+
+import (
+	"sync"
+
+	ffi "github.com/filecoin-project/filecoin-ffi"
+	"github.com/filecoin-project/go-address"
+	"github.com/ipfs/go-datastore"
+)
+
+type SortedPublicSectorInfo = ffi.SortedPublicSectorInfo
+type SortedPrivateSectorInfo = ffi.SortedPrivateSectorInfo
+
+type SealTicket = ffi.SealTicket
+
+type SealSeed = ffi.SealSeed
+
+type SealPreCommitOutput = ffi.SealPreCommitOutput
+
+type SealCommitOutput = ffi.SealCommitOutput
+
+type PublicPieceInfo = ffi.PublicPieceInfo
+
+type RawSealPreCommitOutput ffi.RawSealPreCommitOutput
+
+type EPostCandidate = ffi.Candidate
+
+const CommLen = ffi.CommitmentBytesLen
+
+type WorkerCfg struct {
+	NoPreCommit bool
+	NoCommit    bool
+
+	// TODO: 'cost' info, probably in terms of sealing + transfer speed
+}
+
+type SectorBuilder struct {
+	ds   datastore.Batching
+	idLk sync.Mutex
+
+	ssize  uint64
+	lastID uint64
+
+	Miner address.Address
+
+	unsealLk sync.Mutex
+
+	noCommit    bool
+	noPreCommit bool
+	rateLimit   chan struct{}
+
+	precommitTasks chan workerCall
+	commitTasks    chan workerCall
+
+	taskCtr       uint64
+	remoteLk      sync.Mutex
+	remoteCtr     int
+	remotes       map[int]*remote
+	remoteResults map[uint64]chan<- SealRes
+
+	addPieceWait  int32
+	preCommitWait int32
+	commitWait    int32
+	unsealWait    int32
+
+	fsLk       sync.Mutex //nolint: struckcheck
+	filesystem *fs        // TODO: multi-fs support
+
+	stopping chan struct{}
+}
+
+type remote struct {
+	lk sync.Mutex
+
+	sealTasks chan<- WorkerTask
+	busy      uint64 // only for metrics
+}
+
+type JsonRSPCO struct {
+	CommD []byte
+	CommR []byte
+}
+
+type SealRes struct {
+	Err   string
+	GoErr error `json:"-"`
+
+	Proof []byte
+	Rspco JsonRSPCO
+}