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Merge pull request #1651 from filecoin-project/fix/randomness-for-mining-base

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fix mining base randomness
This commit is contained in:
Łukasz Magiera 2020-05-01 00:16:25 +02:00 committed by GitHub
commit 2e1441cde7
5 changed files with 40 additions and 18 deletions
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1
api/api_full.go
View File

@ -390,6 +390,7 @@ type MiningBaseInfo struct {
WorkerKey address.Address
SectorSize abi.SectorSize
PrevBeaconEntry types.BeaconEntry
BeaconEntries []types.BeaconEntry
}
type BlockTemplate struct {

5
chain/gen/gen.go
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@ -277,7 +277,7 @@ func CarWalkFunc(nd format.Node) (out []*format.Link, err error) {
}
func (cg *ChainGen) nextBlockProof(ctx context.Context, pts *types.TipSet, m address.Address, round abi.ChainEpoch) ([]types.BeaconEntry, *types.ElectionProof, *types.Ticket, error) {
mc := &mca{w: cg.w, sm: cg.sm, pv: ffiwrapper.ProofVerifier}
mc := &mca{w: cg.w, sm: cg.sm, pv: ffiwrapper.ProofVerifier, bcn: cg.beacon}
mbi, err := mc.MinerGetBaseInfo(ctx, m, round, pts.Key())
if err != nil {
@ -488,6 +488,7 @@ type mca struct {
w *wallet.Wallet
sm *stmgr.StateManager
pv ffiwrapper.Verifier
bcn beacon.RandomBeacon
}
func (mca mca) ChainGetRandomness(ctx context.Context, tsk types.TipSetKey, personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) (abi.Randomness, error) {
@ -500,7 +501,7 @@ func (mca mca) ChainGetRandomness(ctx context.Context, tsk types.TipSetKey, pers
}
func (mca mca) MinerGetBaseInfo(ctx context.Context, maddr address.Address, epoch abi.ChainEpoch, tsk types.TipSetKey) (*api.MiningBaseInfo, error) {
return stmgr.MinerGetBaseInfo(ctx, mca.sm, tsk, epoch, maddr, mca.pv)
return stmgr.MinerGetBaseInfo(ctx, mca.sm, mca.bcn, tsk, epoch, maddr, mca.pv)
}
func (mca mca) WalletSign(ctx context.Context, a address.Address, v []byte) (*crypto.Signature, error) {

40
chain/stmgr/utils.go
View File

@ -1,6 +1,7 @@
package stmgr
import (
"bytes"
"context"
"os"
@ -24,6 +25,7 @@ import (
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/build"
"github.com/filecoin-project/lotus/chain/beacon"
"github.com/filecoin-project/lotus/chain/state"
"github.com/filecoin-project/lotus/chain/store"
"github.com/filecoin-project/lotus/chain/types"
@ -421,12 +423,31 @@ func GetLookbackTipSetForRound(ctx context.Context, sm *StateManager, ts *types.
return lbts, nil
}
func MinerGetBaseInfo(ctx context.Context, sm *StateManager, tsk types.TipSetKey, round abi.ChainEpoch, maddr address.Address, pv ffiwrapper.Verifier) (*api.MiningBaseInfo, error) {
func MinerGetBaseInfo(ctx context.Context, sm *StateManager, bcn beacon.RandomBeacon, tsk types.TipSetKey, round abi.ChainEpoch, maddr address.Address, pv ffiwrapper.Verifier) (*api.MiningBaseInfo, error) {
ts, err := sm.ChainStore().LoadTipSet(tsk)
if err != nil {
return nil, xerrors.Errorf("failed to load tipset for mining base: %w", err)
}
prev, err := sm.ChainStore().GetLatestBeaconEntry(ts)
if err != nil {
if os.Getenv("LOTUS_IGNORE_DRAND") != "_yes_" {
return nil, xerrors.Errorf("failed to get latest beacon entry: %w", err)
}
prev = &types.BeaconEntry{}
}
entries, err := beacon.BeaconEntriesForBlock(ctx, bcn, round, *prev)
if err != nil {
return nil, err
}
rbase := *prev
if len(entries) > 0 {
rbase = entries[len(entries)-1]
}
lbts, err := GetLookbackTipSetForRound(ctx, sm, ts, round)
if err != nil {
return nil, xerrors.Errorf("getting lookback miner actor state: %w", err)
@ -442,8 +463,13 @@ func MinerGetBaseInfo(ctx context.Context, sm *StateManager, tsk types.TipSetKey
return nil, err
}
buf := new(bytes.Buffer)
if err := maddr.MarshalCBOR(buf); err != nil {
return nil, xerrors.Errorf("failed to marshal miner address: %w", err)
}
// TODO: use the right dst, also NB: not using any 'entropy' in this call because nicola really didnt want it
prand, err := sm.cs.GetRandomness(ctx, ts.Cids(), crypto.DomainSeparationTag_WinningPoStChallengeSeed, round-1, nil)
prand, err := store.DrawRandomness(rbase.Data, crypto.DomainSeparationTag_WinningPoStChallengeSeed, round-1, buf.Bytes())
if err != nil {
return nil, xerrors.Errorf("failed to get randomness for winning post: %w", err)
}
@ -462,15 +488,6 @@ func MinerGetBaseInfo(ctx context.Context, sm *StateManager, tsk types.TipSetKey
return nil, xerrors.Errorf("failed to get power: %w", err)
}
prev, err := sm.ChainStore().GetLatestBeaconEntry(ts)
if err != nil {
if os.Getenv("LOTUS_IGNORE_DRAND") != "_yes_" {
return nil, xerrors.Errorf("failed to get latest beacon entry: %w", err)
}
prev = &types.BeaconEntry{}
}
worker, err := sm.ResolveToKeyAddress(ctx, mas.GetWorker(), ts)
if err != nil {
return nil, xerrors.Errorf("resolving worker address: %w", err)
@ -483,5 +500,6 @@ func MinerGetBaseInfo(ctx context.Context, sm *StateManager, tsk types.TipSetKey
WorkerKey: worker,
SectorSize: mas.Info.SectorSize,
PrevBeaconEntry: *prev,
BeaconEntries: entries,
}, nil
}

2
miner/miner.go
View File

@ -362,7 +362,7 @@ func (m *Miner) mineOne(ctx context.Context, addr address.Address, base *MiningB
}
buf := new(bytes.Buffer)
if err := m.addresses[0].MarshalCBOR(buf); err != nil {
if err := addr.MarshalCBOR(buf); err != nil {
return nil, xerrors.Errorf("failed to marshal miner address: %w", err)
}

4
node/impl/full/state.go
View File

@ -17,6 +17,7 @@ import (
"github.com/filecoin-project/go-amt-ipld/v2"
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/chain/actors"
"github.com/filecoin-project/lotus/chain/beacon"
"github.com/filecoin-project/lotus/chain/gen"
"github.com/filecoin-project/lotus/chain/state"
"github.com/filecoin-project/lotus/chain/stmgr"
@ -46,6 +47,7 @@ type StateAPI struct {
ProofVerifier ffiwrapper.Verifier
StateManager *stmgr.StateManager
Chain *store.ChainStore
Beacon beacon.RandomBeacon
}
func (a *StateAPI) StateNetworkName(ctx context.Context) (dtypes.NetworkName, error) {
@ -272,7 +274,7 @@ func (a *StateAPI) StateReadState(ctx context.Context, act *types.Actor, tsk typ
// This is on StateAPI because miner.Miner requires this, and MinerAPI requires miner.Miner
func (a *StateAPI) MinerGetBaseInfo(ctx context.Context, maddr address.Address, epoch abi.ChainEpoch, tsk types.TipSetKey) (*api.MiningBaseInfo, error) {
return stmgr.MinerGetBaseInfo(ctx, a.StateManager, tsk, epoch, maddr, a.ProofVerifier)
return stmgr.MinerGetBaseInfo(ctx, a.StateManager, a.Beacon, tsk, epoch, maddr, a.ProofVerifier)
}
func (a *StateAPI) MinerCreateBlock(ctx context.Context, bt *api.BlockTemplate) (*types.BlockMsg, error) {