633 lines
16 KiB
Go
633 lines
16 KiB
Go
package gen
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import (
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"bytes"
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"context"
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"crypto/sha256"
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"encoding/binary"
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"fmt"
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"io/ioutil"
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"sync/atomic"
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ffi "github.com/filecoin-project/filecoin-ffi"
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"github.com/ipfs/go-blockservice"
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"github.com/ipfs/go-car"
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offline "github.com/ipfs/go-ipfs-exchange-offline"
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"github.com/ipfs/go-merkledag"
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peer "github.com/libp2p/go-libp2p-peer"
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"go.opencensus.io/trace"
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"golang.org/x/xerrors"
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"github.com/filecoin-project/lotus/api"
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"github.com/filecoin-project/lotus/build"
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"github.com/filecoin-project/lotus/chain/address"
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"github.com/filecoin-project/lotus/chain/stmgr"
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"github.com/filecoin-project/lotus/chain/store"
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"github.com/filecoin-project/lotus/chain/types"
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"github.com/filecoin-project/lotus/chain/wallet"
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"github.com/filecoin-project/lotus/cmd/lotus-seed/seed"
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"github.com/filecoin-project/lotus/genesis"
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"github.com/filecoin-project/lotus/lib/sectorbuilder"
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"github.com/filecoin-project/lotus/node/repo"
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block "github.com/ipfs/go-block-format"
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"github.com/ipfs/go-cid"
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blockstore "github.com/ipfs/go-ipfs-blockstore"
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logging "github.com/ipfs/go-log"
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)
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var log = logging.Logger("gen")
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const msgsPerBlock = 20
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type ChainGen struct {
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accounts []address.Address
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msgsPerBlock int
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bs blockstore.Blockstore
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cs *store.ChainStore
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sm *stmgr.StateManager
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genesis *types.BlockHeader
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CurTipset *store.FullTipSet
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Timestamper func(*types.TipSet, uint64) uint64
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w *wallet.Wallet
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eppProvs map[address.Address]ElectionPoStProver
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Miners []address.Address
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mworkers []address.Address
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receivers []address.Address
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banker address.Address
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bankerNonce uint64
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r repo.Repo
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lr repo.LockedRepo
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}
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type mybs struct {
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blockstore.Blockstore
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}
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func (m mybs) Get(c cid.Cid) (block.Block, error) {
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b, err := m.Blockstore.Get(c)
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if err != nil {
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return nil, err
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}
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return b, nil
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}
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func NewGenerator() (*ChainGen, error) {
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mr := repo.NewMemory(nil)
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lr, err := mr.Lock(repo.StorageMiner)
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if err != nil {
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return nil, xerrors.Errorf("taking mem-repo lock failed: %w", err)
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}
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ds, err := lr.Datastore("/metadata")
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if err != nil {
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return nil, xerrors.Errorf("failed to get metadata datastore: %w", err)
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}
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bds, err := lr.Datastore("/blocks")
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if err != nil {
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return nil, xerrors.Errorf("failed to get blocks datastore: %w", err)
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}
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bs := mybs{blockstore.NewIdStore(blockstore.NewBlockstore(bds))}
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ks, err := lr.KeyStore()
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if err != nil {
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return nil, xerrors.Errorf("getting repo keystore failed: %w", err)
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}
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w, err := wallet.NewWallet(ks)
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if err != nil {
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return nil, xerrors.Errorf("creating memrepo wallet failed: %w", err)
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}
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banker, err := w.GenerateKey(types.KTSecp256k1)
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if err != nil {
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return nil, xerrors.Errorf("failed to generate banker key: %w", err)
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}
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receievers := make([]address.Address, msgsPerBlock)
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for r := range receievers {
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receievers[r], err = w.GenerateKey(types.KTBLS)
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if err != nil {
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return nil, xerrors.Errorf("failed to generate receiver key: %w", err)
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}
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}
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// TODO: this is really weird, we have to guess the miner addresses that
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// will be created in order to preseal data for them
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maddr1, err := address.NewFromString("t0101")
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if err != nil {
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return nil, err
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}
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m1temp, err := ioutil.TempDir("", "preseal")
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if err != nil {
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return nil, err
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}
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genm1, err := seed.PreSeal(maddr1, 1024, 1, m1temp, []byte("some randomness"))
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if err != nil {
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return nil, err
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}
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maddr2, err := address.NewFromString("t0102")
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if err != nil {
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return nil, err
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}
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m2temp, err := ioutil.TempDir("", "preseal")
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if err != nil {
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return nil, err
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}
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genm2, err := seed.PreSeal(maddr2, 1024, 1, m2temp, []byte("some randomness"))
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if err != nil {
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return nil, err
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}
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mk1, err := w.Import(&genm1.Key)
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if err != nil {
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return nil, err
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}
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mk2, err := w.Import(&genm2.Key)
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if err != nil {
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return nil, err
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}
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minercfg := &GenMinerCfg{
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PeerIDs: []peer.ID{"peerID1", "peerID2"},
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PreSeals: map[string]genesis.GenesisMiner{
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maddr1.String(): *genm1,
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maddr2.String(): *genm2,
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},
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MinerAddrs: []address.Address{maddr1, maddr2},
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}
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genb, err := MakeGenesisBlock(bs, map[address.Address]types.BigInt{
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mk1: types.FromFil(40000),
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mk2: types.FromFil(40000),
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banker: types.FromFil(50000),
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}, minercfg, 100000)
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if err != nil {
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return nil, xerrors.Errorf("make genesis block failed: %w", err)
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}
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cs := store.NewChainStore(bs, ds)
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genfb := &types.FullBlock{Header: genb.Genesis}
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gents := store.NewFullTipSet([]*types.FullBlock{genfb})
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if err := cs.SetGenesis(genb.Genesis); err != nil {
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return nil, xerrors.Errorf("set genesis failed: %w", err)
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}
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if len(minercfg.MinerAddrs) == 0 {
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return nil, xerrors.Errorf("MakeGenesisBlock failed to set miner address")
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}
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mgen := make(map[address.Address]ElectionPoStProver)
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for _, m := range minercfg.MinerAddrs {
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mgen[m] = &eppProvider{}
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}
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sm := stmgr.NewStateManager(cs)
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gen := &ChainGen{
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bs: bs,
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cs: cs,
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sm: sm,
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msgsPerBlock: msgsPerBlock,
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genesis: genb.Genesis,
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w: w,
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Miners: minercfg.MinerAddrs,
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eppProvs: mgen,
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//mworkers: minercfg.Workers,
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banker: banker,
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receivers: receievers,
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CurTipset: gents,
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r: mr,
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lr: lr,
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}
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return gen, nil
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}
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func (cg *ChainGen) Genesis() *types.BlockHeader {
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return cg.genesis
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}
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func (cg *ChainGen) GenesisCar() ([]byte, error) {
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offl := offline.Exchange(cg.bs)
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blkserv := blockservice.New(cg.bs, offl)
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dserv := merkledag.NewDAGService(blkserv)
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out := new(bytes.Buffer)
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if err := car.WriteCar(context.TODO(), dserv, []cid.Cid{cg.Genesis().Cid()}, out); err != nil {
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return nil, xerrors.Errorf("genesis car write car failed: %w", err)
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}
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return out.Bytes(), nil
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}
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func (cg *ChainGen) nextBlockProof(ctx context.Context, pts *types.TipSet, m address.Address, round int64) (*types.EPostProof, *types.Ticket, error) {
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lastTicket := pts.MinTicket()
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st := pts.ParentState()
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worker, err := stmgr.GetMinerWorkerRaw(ctx, cg.sm, st, m)
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if err != nil {
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return nil, nil, xerrors.Errorf("get miner worker: %w", err)
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}
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vrfout, err := ComputeVRF(ctx, cg.w.Sign, worker, m, DSepTicket, lastTicket.VRFProof)
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if err != nil {
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return nil, nil, xerrors.Errorf("compute VRF: %w", err)
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}
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tick := &types.Ticket{
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VRFProof: vrfout,
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}
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win, eproof, err := IsRoundWinner(ctx, pts, round, m, cg.eppProvs[m], &mca{w: cg.w, sm: cg.sm})
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if err != nil {
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return nil, nil, xerrors.Errorf("checking round winner failed: %w", err)
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}
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if !win {
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return nil, tick, nil
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}
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return eproof, tick, nil
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}
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type MinedTipSet struct {
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TipSet *store.FullTipSet
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Messages []*types.SignedMessage
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}
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func (cg *ChainGen) NextTipSet() (*MinedTipSet, error) {
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mts, err := cg.NextTipSetFromMiners(cg.CurTipset.TipSet(), cg.Miners)
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if err != nil {
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return nil, err
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}
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cg.CurTipset = mts.TipSet
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return mts, nil
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}
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func (cg *ChainGen) NextTipSetFromMiners(base *types.TipSet, miners []address.Address) (*MinedTipSet, error) {
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var blks []*types.FullBlock
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msgs, err := cg.getRandomMessages()
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if err != nil {
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return nil, xerrors.Errorf("get random messages: %w", err)
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}
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for round := int64(base.Height() + 1); len(blks) == 0; round++ {
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for _, m := range miners {
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proof, t, err := cg.nextBlockProof(context.TODO(), base, m, round)
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if err != nil {
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return nil, xerrors.Errorf("next block proof: %w", err)
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}
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if proof != nil {
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fblk, err := cg.makeBlock(base, m, proof, t, uint64(round), msgs)
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if err != nil {
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return nil, xerrors.Errorf("making a block for next tipset failed: %w", err)
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}
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if err := cg.cs.PersistBlockHeaders(fblk.Header); err != nil {
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return nil, xerrors.Errorf("chainstore AddBlock: %w", err)
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}
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blks = append(blks, fblk)
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}
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}
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}
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fts := store.NewFullTipSet(blks)
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return &MinedTipSet{
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TipSet: fts,
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Messages: msgs,
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}, nil
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}
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func (cg *ChainGen) makeBlock(parents *types.TipSet, m address.Address, eproof *types.EPostProof, ticket *types.Ticket, height uint64, msgs []*types.SignedMessage) (*types.FullBlock, error) {
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var ts uint64
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if cg.Timestamper != nil {
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ts = cg.Timestamper(parents, height-parents.Height())
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} else {
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ts = parents.MinTimestamp() + ((height - parents.Height()) * build.BlockDelay)
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}
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fblk, err := MinerCreateBlock(context.TODO(), cg.sm, cg.w, m, parents, ticket, eproof, msgs, height, ts)
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if err != nil {
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return nil, err
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}
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return fblk, err
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}
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// This function is awkward. It's used to deal with messages made when
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// simulating forks
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func (cg *ChainGen) ResyncBankerNonce(ts *types.TipSet) error {
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act, err := cg.sm.GetActor(cg.banker, ts)
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if err != nil {
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return err
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}
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cg.bankerNonce = act.Nonce
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return nil
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}
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func (cg *ChainGen) getRandomMessages() ([]*types.SignedMessage, error) {
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msgs := make([]*types.SignedMessage, cg.msgsPerBlock)
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for m := range msgs {
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msg := types.Message{
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To: cg.receivers[m%len(cg.receivers)],
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From: cg.banker,
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Nonce: atomic.AddUint64(&cg.bankerNonce, 1) - 1,
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Value: types.NewInt(uint64(m + 1)),
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Method: 0,
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GasLimit: types.NewInt(10000),
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GasPrice: types.NewInt(0),
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}
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sig, err := cg.w.Sign(context.TODO(), cg.banker, msg.Cid().Bytes())
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if err != nil {
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return nil, err
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}
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msgs[m] = &types.SignedMessage{
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Message: msg,
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Signature: *sig,
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}
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}
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return msgs, nil
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}
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func (cg *ChainGen) YieldRepo() (repo.Repo, error) {
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if err := cg.lr.Close(); err != nil {
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return nil, err
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}
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return cg.r, nil
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}
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type MiningCheckAPI interface {
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ChainGetRandomness(context.Context, types.TipSetKey, int64) ([]byte, error)
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StateMinerPower(context.Context, address.Address, *types.TipSet) (api.MinerPower, error)
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StateMinerWorker(context.Context, address.Address, *types.TipSet) (address.Address, error)
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StateMinerSectorSize(context.Context, address.Address, *types.TipSet) (uint64, error)
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StateMinerProvingSet(context.Context, address.Address, *types.TipSet) ([]*api.ChainSectorInfo, error)
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WalletSign(context.Context, address.Address, []byte) (*types.Signature, error)
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}
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type mca struct {
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w *wallet.Wallet
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sm *stmgr.StateManager
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}
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func (mca mca) ChainGetRandomness(ctx context.Context, pts types.TipSetKey, lb int64) ([]byte, error) {
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return mca.sm.ChainStore().GetRandomness(ctx, pts.Cids(), int64(lb))
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}
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func (mca mca) StateMinerPower(ctx context.Context, maddr address.Address, ts *types.TipSet) (api.MinerPower, error) {
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mpow, tpow, err := stmgr.GetPower(ctx, mca.sm, ts, maddr)
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if err != nil {
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return api.MinerPower{}, err
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}
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return api.MinerPower{
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MinerPower: mpow,
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TotalPower: tpow,
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}, err
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}
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func (mca mca) StateMinerWorker(ctx context.Context, maddr address.Address, ts *types.TipSet) (address.Address, error) {
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return stmgr.GetMinerWorkerRaw(ctx, mca.sm, ts.ParentState(), maddr)
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}
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func (mca mca) StateMinerSectorSize(ctx context.Context, maddr address.Address, ts *types.TipSet) (uint64, error) {
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return stmgr.GetMinerSectorSize(ctx, mca.sm, ts, maddr)
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}
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func (mca mca) StateMinerProvingSet(ctx context.Context, maddr address.Address, ts *types.TipSet) ([]*api.ChainSectorInfo, error) {
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return stmgr.GetMinerProvingSet(ctx, mca.sm, ts, maddr)
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}
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func (mca mca) WalletSign(ctx context.Context, a address.Address, v []byte) (*types.Signature, error) {
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return mca.w.Sign(ctx, a, v)
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}
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type ElectionPoStProver interface {
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GenerateCandidates(context.Context, sectorbuilder.SortedPublicSectorInfo, []byte) ([]sectorbuilder.EPostCandidate, error)
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ComputeProof(context.Context, sectorbuilder.SortedPublicSectorInfo, []byte, []sectorbuilder.EPostCandidate) ([]byte, error)
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}
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type eppProvider struct {
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sectors []ffi.PublicSectorInfo
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}
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func (epp *eppProvider) GenerateCandidates(ctx context.Context, _ sectorbuilder.SortedPublicSectorInfo, eprand []byte) ([]sectorbuilder.EPostCandidate, error) {
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return []sectorbuilder.EPostCandidate{
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sectorbuilder.EPostCandidate{
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SectorID: 1,
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PartialTicket: [32]byte{},
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Ticket: [32]byte{},
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SectorChallengeIndex: 1,
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},
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}, nil
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}
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func (epp *eppProvider) ComputeProof(ctx context.Context, _ sectorbuilder.SortedPublicSectorInfo, eprand []byte, winners []sectorbuilder.EPostCandidate) ([]byte, error) {
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return []byte("valid proof"), nil
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}
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func IsRoundWinner(ctx context.Context, ts *types.TipSet, round int64, miner address.Address, epp ElectionPoStProver, a MiningCheckAPI) (bool, *types.EPostProof, error) {
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r, err := a.ChainGetRandomness(ctx, ts.Key(), round-build.EcRandomnessLookback)
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if err != nil {
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return false, nil, xerrors.Errorf("chain get randomness: %w", err)
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}
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mworker, err := a.StateMinerWorker(ctx, miner, ts)
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if err != nil {
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return false, nil, xerrors.Errorf("failed to get miner worker: %w", err)
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}
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vrfout, err := ComputeVRF(ctx, a.WalletSign, mworker, miner, DSepElectionPost, r)
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if err != nil {
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return false, nil, xerrors.Errorf("failed to compute VRF: %w", err)
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}
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pset, err := a.StateMinerProvingSet(ctx, miner, ts)
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if err != nil {
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return false, nil, xerrors.Errorf("failed to load proving set for miner: %w", err)
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}
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log.Warningf("Proving set for miner %s: %s", miner, pset)
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var sinfos []ffi.PublicSectorInfo
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for _, s := range pset {
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var commRa [32]byte
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copy(commRa[:], s.CommR)
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sinfos = append(sinfos, ffi.PublicSectorInfo{
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SectorID: s.SectorID,
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CommR: commRa,
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})
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}
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sectors := sectorbuilder.NewSortedPublicSectorInfo(sinfos)
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hvrf := sha256.Sum256(vrfout)
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log.Info("Replicas: ", sectors)
|
|
candidates, err := epp.GenerateCandidates(ctx, sectors, hvrf[:])
|
|
if err != nil {
|
|
return false, nil, xerrors.Errorf("failed to generate electionPoSt candidates: %w", err)
|
|
}
|
|
|
|
pow, err := a.StateMinerPower(ctx, miner, ts)
|
|
if err != nil {
|
|
return false, nil, xerrors.Errorf("failed to check power: %w", err)
|
|
}
|
|
|
|
ssize, err := a.StateMinerSectorSize(ctx, miner, ts)
|
|
if err != nil {
|
|
return false, nil, xerrors.Errorf("failed to look up miners sector size: %w", err)
|
|
}
|
|
|
|
var winners []sectorbuilder.EPostCandidate
|
|
for _, c := range candidates {
|
|
if types.IsTicketWinner(c.PartialTicket[:], ssize, pow.TotalPower, 1) {
|
|
winners = append(winners, c)
|
|
}
|
|
}
|
|
|
|
// no winners, sad
|
|
if len(winners) == 0 {
|
|
return false, nil, nil
|
|
}
|
|
|
|
proof, err := epp.ComputeProof(ctx, sectors, hvrf[:], winners)
|
|
if err != nil {
|
|
return false, nil, xerrors.Errorf("failed to compute snark for election proof: %w", err)
|
|
}
|
|
|
|
ept := types.EPostProof{
|
|
Proof: proof,
|
|
PostRand: vrfout,
|
|
}
|
|
for _, win := range winners {
|
|
ept.Candidates = append(ept.Candidates, types.EPostTicket{
|
|
Partial: win.PartialTicket[:],
|
|
SectorID: win.SectorID,
|
|
ChallengeIndex: win.SectorChallengeIndex,
|
|
})
|
|
}
|
|
|
|
return true, &ept, nil
|
|
}
|
|
|
|
type SignFunc func(context.Context, address.Address, []byte) (*types.Signature, error)
|
|
|
|
const (
|
|
DSepTicket = 1
|
|
DSepElectionPost = 2
|
|
)
|
|
|
|
func hashVRFBase(personalization uint64, miner address.Address, input []byte) ([]byte, error) {
|
|
if miner.Protocol() != address.ID {
|
|
return nil, xerrors.Errorf("miner address for compute VRF must be an ID address")
|
|
}
|
|
|
|
var persbuf [8]byte
|
|
binary.LittleEndian.PutUint64(persbuf[:], personalization)
|
|
|
|
h := sha256.New()
|
|
h.Write(persbuf[:])
|
|
h.Write([]byte{0})
|
|
h.Write(input)
|
|
h.Write([]byte{0})
|
|
h.Write(miner.Bytes())
|
|
|
|
return h.Sum(nil), nil
|
|
}
|
|
|
|
func VerifyVRF(ctx context.Context, worker, miner address.Address, p uint64, input, vrfproof []byte) error {
|
|
ctx, span := trace.StartSpan(ctx, "VerifyVRF")
|
|
defer span.End()
|
|
|
|
vrfBase, err := hashVRFBase(p, miner, input)
|
|
if err != nil {
|
|
return xerrors.Errorf("computing vrf base failed: %w", err)
|
|
}
|
|
|
|
sig := &types.Signature{
|
|
Type: types.KTBLS,
|
|
Data: vrfproof,
|
|
}
|
|
|
|
if err := sig.Verify(worker, vrfBase); err != nil {
|
|
return xerrors.Errorf("vrf was invalid: %w", err)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func ComputeVRF(ctx context.Context, sign SignFunc, worker, miner address.Address, p uint64, input []byte) ([]byte, error) {
|
|
sigInput, err := hashVRFBase(p, miner, input)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
sig, err := sign(ctx, worker, sigInput)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if sig.Type != types.KTBLS {
|
|
return nil, fmt.Errorf("miner worker address was not a BLS key")
|
|
}
|
|
|
|
return sig.Data, nil
|
|
}
|
|
|
|
func TicketHash(t *types.Ticket, addr address.Address) []byte {
|
|
h := sha256.New()
|
|
|
|
h.Write(t.VRFProof)
|
|
|
|
// Field Delimeter
|
|
h.Write([]byte{0})
|
|
|
|
h.Write(addr.Bytes())
|
|
|
|
return h.Sum(nil)
|
|
}
|