lotus/mock/mock.go

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package mock
import (
"bytes"
"context"
"fmt"
"io"
"io/ioutil"
"math/big"
"math/rand"
"sync"
commcid "github.com/filecoin-project/go-fil-commcid"
"github.com/filecoin-project/specs-actors/actors/abi"
"github.com/filecoin-project/specs-storage/storage"
"github.com/ipfs/go-cid"
logging "github.com/ipfs/go-log"
"golang.org/x/xerrors"
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"github.com/filecoin-project/sector-storage"
"github.com/filecoin-project/sector-storage/ffiwrapper"
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)
var log = logging.Logger("sbmock")
type SectorMgr struct {
sectors map[abi.SectorID]*sectorState
sectorSize abi.SectorSize
nextSectorID abi.SectorNumber
rateLimit chan struct{}
proofType abi.RegisteredProof
lk sync.Mutex
}
type mockVerif struct{}
func NewMockSectorMgr(threads int, ssize abi.SectorSize) *SectorMgr {
rt, _, err := ffiwrapper.ProofTypeFromSectorSize(ssize)
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if err != nil {
panic(err)
}
return &SectorMgr{
sectors: make(map[abi.SectorID]*sectorState),
sectorSize: ssize,
nextSectorID: 5,
rateLimit: make(chan struct{}, threads),
proofType: rt,
}
}
const (
statePacking = iota
statePreCommit
stateCommit
)
type sectorState struct {
pieces []cid.Cid
failed bool
state int
lk sync.Mutex
}
func (sb *SectorMgr) RateLimit() func() {
sb.rateLimit <- struct{}{}
// TODO: probably want to copy over rate limit code
return func() {
<-sb.rateLimit
}
}
func (sb *SectorMgr) NewSector(ctx context.Context, sector abi.SectorID) error {
return nil
}
func (sb *SectorMgr) AddPiece(ctx context.Context, sectorId abi.SectorID, existingPieces []abi.UnpaddedPieceSize, size abi.UnpaddedPieceSize, r io.Reader) (abi.PieceInfo, error) {
log.Warn("Add piece: ", sectorId, size, sb.proofType)
sb.lk.Lock()
ss, ok := sb.sectors[sectorId]
if !ok {
ss = &sectorState{
state: statePacking,
}
sb.sectors[sectorId] = ss
}
sb.lk.Unlock()
ss.lk.Lock()
defer ss.lk.Unlock()
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c, err := ffiwrapper.GeneratePieceCIDFromFile(sb.proofType, r, size)
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if err != nil {
return abi.PieceInfo{}, xerrors.Errorf("failed to generate piece cid: %w", err)
}
log.Warn("Generated Piece CID: ", c)
ss.pieces = append(ss.pieces, c)
return abi.PieceInfo{
Size: size.Padded(),
PieceCID: c,
}, nil
}
func (sb *SectorMgr) SectorSize() abi.SectorSize {
return sb.sectorSize
}
func (sb *SectorMgr) AcquireSectorNumber() (abi.SectorNumber, error) {
sb.lk.Lock()
defer sb.lk.Unlock()
id := sb.nextSectorID
sb.nextSectorID++
return id, nil
}
func (sb *SectorMgr) SealPreCommit1(ctx context.Context, sid abi.SectorID, ticket abi.SealRandomness, pieces []abi.PieceInfo) (out storage.PreCommit1Out, err error) {
sb.lk.Lock()
ss, ok := sb.sectors[sid]
sb.lk.Unlock()
if !ok {
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return nil, xerrors.Errorf("no sector with id %d in storage", sid)
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}
ss.lk.Lock()
defer ss.lk.Unlock()
ussize := abi.PaddedPieceSize(sb.sectorSize).Unpadded()
// TODO: verify pieces in sinfo.pieces match passed in pieces
var sum abi.UnpaddedPieceSize
for _, p := range pieces {
sum += p.Size.Unpadded()
}
if sum != ussize {
return nil, xerrors.Errorf("aggregated piece sizes don't match up: %d != %d", sum, ussize)
}
if ss.state != statePacking {
return nil, xerrors.Errorf("cannot call pre-seal on sector not in 'packing' state")
}
opFinishWait(ctx)
ss.state = statePreCommit
pis := make([]abi.PieceInfo, len(ss.pieces))
for i, piece := range ss.pieces {
pis[i] = abi.PieceInfo{
Size: pieces[i].Size,
PieceCID: piece,
}
}
commd, err := MockVerifier.GenerateDataCommitment(sb.proofType, pis)
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if err != nil {
return nil, err
}
cc, _, err := commcid.CIDToCommitment(commd)
if err != nil {
panic(err)
}
cc[0] ^= 'd'
return cc, nil
}
func (sb *SectorMgr) SealPreCommit2(ctx context.Context, sid abi.SectorID, phase1Out storage.PreCommit1Out) (cids storage.SectorCids, err error) {
db := []byte(string(phase1Out))
db[0] ^= 'd'
d := commcid.DataCommitmentV1ToCID(db)
commr := make([]byte, 32)
for i := range db {
commr[32-(i+1)] = db[i]
}
commR := commcid.DataCommitmentV1ToCID(commr)
return storage.SectorCids{
Unsealed: d,
Sealed: commR,
}, nil
}
func (sb *SectorMgr) SealCommit1(ctx context.Context, sid abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (output storage.Commit1Out, err error) {
sb.lk.Lock()
ss, ok := sb.sectors[sid]
sb.lk.Unlock()
if !ok {
return nil, xerrors.Errorf("no such sector %d", sid)
}
ss.lk.Lock()
defer ss.lk.Unlock()
if ss.failed {
return nil, xerrors.Errorf("[mock] cannot commit failed sector %d", sid)
}
if ss.state != statePreCommit {
return nil, xerrors.Errorf("cannot commit sector that has not been precommitted")
}
opFinishWait(ctx)
var out [32]byte
for i := range out {
out[i] = cids.Unsealed.Bytes()[i] + cids.Sealed.Bytes()[31-i] - ticket[i]*seed[i] ^ byte(sid.Number&0xff)
}
return out[:], nil
}
func (sb *SectorMgr) SealCommit2(ctx context.Context, sid abi.SectorID, phase1Out storage.Commit1Out) (proof storage.Proof, err error) {
var out [32]byte
for i := range out {
out[i] = phase1Out[i] ^ byte(sid.Number&0xff)
}
return out[:], nil
}
// Test Instrumentation Methods
func (sb *SectorMgr) FailSector(sid abi.SectorID) error {
sb.lk.Lock()
defer sb.lk.Unlock()
ss, ok := sb.sectors[sid]
if !ok {
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return fmt.Errorf("no such sector in storage")
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}
ss.failed = true
return nil
}
func opFinishWait(ctx context.Context) {
val, ok := ctx.Value("opfinish").(chan struct{})
if !ok {
return
}
<-val
}
func AddOpFinish(ctx context.Context) (context.Context, func()) {
done := make(chan struct{})
return context.WithValue(ctx, "opfinish", done), func() {
close(done)
}
}
func (sb *SectorMgr) GenerateFallbackPoSt(context.Context, abi.ActorID, []abi.SectorInfo, abi.PoStRandomness, []abi.SectorNumber) (storage.FallbackPostOut, error) {
panic("implement me")
}
func (sb *SectorMgr) ComputeElectionPoSt(ctx context.Context, mid abi.ActorID, sectorInfo []abi.SectorInfo, challengeSeed abi.PoStRandomness, winners []abi.PoStCandidate) ([]abi.PoStProof, error) {
panic("implement me")
}
func (sb *SectorMgr) GenerateEPostCandidates(ctx context.Context, mid abi.ActorID, sectorInfo []abi.SectorInfo, challengeSeed abi.PoStRandomness, faults []abi.SectorNumber) ([]storage.PoStCandidateWithTicket, error) {
if len(faults) > 0 {
panic("todo")
}
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n := ffiwrapper.ElectionPostChallengeCount(uint64(len(sectorInfo)), uint64(len(faults)))
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if n > uint64(len(sectorInfo)) {
n = uint64(len(sectorInfo))
}
out := make([]storage.PoStCandidateWithTicket, n)
seed := big.NewInt(0).SetBytes(challengeSeed[:])
start := seed.Mod(seed, big.NewInt(int64(len(sectorInfo)))).Int64()
for i := range out {
out[i] = storage.PoStCandidateWithTicket{
Candidate: abi.PoStCandidate{
SectorID: abi.SectorID{
Number: abi.SectorNumber((int(start) + i) % len(sectorInfo)),
Miner: mid,
},
PartialTicket: abi.PartialTicket(challengeSeed),
},
}
}
return out, nil
}
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func (sb *SectorMgr) ReadPieceFromSealedSector(ctx context.Context, sectorID abi.SectorID, offset ffiwrapper.UnpaddedByteIndex, size abi.UnpaddedPieceSize, ticket abi.SealRandomness, commD cid.Cid) (io.ReadCloser, error) {
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if len(sb.sectors[sectorID].pieces) > 1 {
panic("implme")
}
return ioutil.NopCloser(io.LimitReader(bytes.NewReader(sb.sectors[sectorID].pieces[0].Bytes()[offset:]), int64(size))), nil
}
func (sb *SectorMgr) StageFakeData(mid abi.ActorID) (abi.SectorID, []abi.PieceInfo, error) {
usize := abi.PaddedPieceSize(sb.sectorSize).Unpadded()
sid, err := sb.AcquireSectorNumber()
if err != nil {
return abi.SectorID{}, nil, err
}
buf := make([]byte, usize)
rand.Read(buf)
id := abi.SectorID{
Miner: mid,
Number: sid,
}
pi, err := sb.AddPiece(context.TODO(), id, nil, usize, bytes.NewReader(buf))
if err != nil {
return abi.SectorID{}, nil, err
}
return id, []abi.PieceInfo{pi}, nil
}
func (sb *SectorMgr) FinalizeSector(context.Context, abi.SectorID) error {
return nil
}
func (m mockVerif) VerifyElectionPost(ctx context.Context, pvi abi.PoStVerifyInfo) (bool, error) {
panic("implement me")
}
func (m mockVerif) VerifyFallbackPost(ctx context.Context, pvi abi.PoStVerifyInfo) (bool, error) {
panic("implement me")
}
func (m mockVerif) VerifySeal(svi abi.SealVerifyInfo) (bool, error) {
if len(svi.OnChain.Proof) != 32 { // Real ones are longer, but this should be fine
return false, nil
}
for i, b := range svi.OnChain.Proof {
if b != svi.UnsealedCID.Bytes()[i]+svi.OnChain.SealedCID.Bytes()[31-i]-svi.InteractiveRandomness[i]*svi.Randomness[i] {
return false, nil
}
}
return true, nil
}
func (m mockVerif) GenerateDataCommitment(pt abi.RegisteredProof, pieces []abi.PieceInfo) (cid.Cid, error) {
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return ffiwrapper.GenerateUnsealedCID(pt, pieces)
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}
var MockVerifier = mockVerif{}
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var _ ffiwrapper.Verifier = MockVerifier
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var _ sectorstorage.SectorManager = &SectorMgr{}