429 lines
11 KiB
Go
429 lines
11 KiB
Go
package miner
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/filecoin-project/lotus/api"
|
|
"github.com/filecoin-project/lotus/build"
|
|
"github.com/filecoin-project/lotus/chain/actors"
|
|
"github.com/filecoin-project/lotus/chain/address"
|
|
"github.com/filecoin-project/lotus/chain/gen"
|
|
"github.com/filecoin-project/lotus/chain/types"
|
|
|
|
logging "github.com/ipfs/go-log"
|
|
"go.opencensus.io/trace"
|
|
"golang.org/x/xerrors"
|
|
)
|
|
|
|
var log = logging.Logger("miner")
|
|
|
|
type waitFunc func(ctx context.Context) error
|
|
|
|
func NewMiner(api api.FullNode, epp gen.ElectionPoStProver) *Miner {
|
|
return &Miner{
|
|
api: api,
|
|
epp: epp,
|
|
waitFunc: func(ctx context.Context) error {
|
|
// Wait around for half the block time in case other parents come in
|
|
time.Sleep(build.PropagationDelay * time.Second)
|
|
return nil
|
|
},
|
|
}
|
|
}
|
|
|
|
type Miner struct {
|
|
api api.FullNode
|
|
|
|
epp gen.ElectionPoStProver
|
|
|
|
lk sync.Mutex
|
|
addresses []address.Address
|
|
stop chan struct{}
|
|
stopping chan struct{}
|
|
|
|
waitFunc waitFunc
|
|
|
|
lastWork *MiningBase
|
|
}
|
|
|
|
func (m *Miner) Addresses() ([]address.Address, error) {
|
|
m.lk.Lock()
|
|
defer m.lk.Unlock()
|
|
|
|
out := make([]address.Address, len(m.addresses))
|
|
copy(out, m.addresses)
|
|
|
|
return out, nil
|
|
}
|
|
|
|
func (m *Miner) Register(addr address.Address) error {
|
|
m.lk.Lock()
|
|
defer m.lk.Unlock()
|
|
|
|
if len(m.addresses) > 0 {
|
|
for _, a := range m.addresses {
|
|
if a == addr {
|
|
log.Warnf("miner.Register called more than once for actor '%s'", addr)
|
|
return xerrors.Errorf("miner.Register called more than once for actor '%s'", addr)
|
|
}
|
|
}
|
|
}
|
|
|
|
m.addresses = append(m.addresses, addr)
|
|
if len(m.addresses) == 1 {
|
|
m.stop = make(chan struct{})
|
|
go m.mine(context.TODO())
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (m *Miner) Unregister(ctx context.Context, addr address.Address) error {
|
|
m.lk.Lock()
|
|
defer m.lk.Unlock()
|
|
if len(m.addresses) == 0 {
|
|
return xerrors.New("no addresses registered")
|
|
}
|
|
|
|
idx := -1
|
|
|
|
for i, a := range m.addresses {
|
|
if a == addr {
|
|
idx = i
|
|
break
|
|
}
|
|
}
|
|
if idx == -1 {
|
|
return xerrors.New("unregister: address not found")
|
|
}
|
|
|
|
m.addresses[idx] = m.addresses[len(m.addresses)-1]
|
|
m.addresses = m.addresses[:len(m.addresses)-1]
|
|
|
|
// Unregistering last address, stop mining first
|
|
if len(m.addresses) == 0 && m.stop != nil {
|
|
m.stopping = make(chan struct{})
|
|
stopping := m.stopping
|
|
close(m.stop)
|
|
|
|
select {
|
|
case <-stopping:
|
|
case <-ctx.Done():
|
|
return ctx.Err()
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (m *Miner) mine(ctx context.Context) {
|
|
ctx, span := trace.StartSpan(ctx, "/mine")
|
|
defer span.End()
|
|
|
|
var lastBase MiningBase
|
|
|
|
eventLoop:
|
|
for {
|
|
select {
|
|
case <-m.stop:
|
|
stopping := m.stopping
|
|
m.stop = nil
|
|
m.stopping = nil
|
|
close(stopping)
|
|
return
|
|
|
|
default:
|
|
}
|
|
|
|
m.lk.Lock()
|
|
addrs := m.addresses
|
|
m.lk.Unlock()
|
|
|
|
// Sleep a small amount in order to wait for other blocks to arrive
|
|
if err := m.waitFunc(ctx); err != nil {
|
|
log.Error(err)
|
|
return
|
|
}
|
|
|
|
base, err := m.GetBestMiningCandidate(ctx)
|
|
if err != nil {
|
|
log.Errorf("failed to get best mining candidate: %s", err)
|
|
continue
|
|
}
|
|
if base.ts.Equals(lastBase.ts) && lastBase.nullRounds == base.nullRounds {
|
|
log.Warnf("BestMiningCandidate from the previous round: %s (nulls:%d)", lastBase.ts.Cids(), lastBase.nullRounds)
|
|
time.Sleep(build.BlockDelay * time.Second)
|
|
continue
|
|
}
|
|
lastBase = *base
|
|
|
|
blks := make([]*types.BlockMsg, 0)
|
|
|
|
for _, addr := range addrs {
|
|
b, err := m.mineOne(ctx, addr, base)
|
|
if err != nil {
|
|
log.Errorf("mining block failed: %+v", err)
|
|
continue
|
|
}
|
|
if b != nil {
|
|
blks = append(blks, b)
|
|
}
|
|
}
|
|
|
|
if len(blks) != 0 {
|
|
btime := time.Unix(int64(blks[0].Header.Timestamp), 0)
|
|
if time.Now().Before(btime) {
|
|
time.Sleep(time.Until(btime))
|
|
} else {
|
|
log.Warnw("mined block in the past", "block-time", btime,
|
|
"time", time.Now(), "duration", time.Now().Sub(btime))
|
|
}
|
|
|
|
mWon := make(map[address.Address]struct{})
|
|
for _, b := range blks {
|
|
_, notOk := mWon[b.Header.Miner]
|
|
if notOk {
|
|
log.Errorw("2 blocks for the same miner. Throwing hands in the air. Report this. It is important.", "bloks", blks)
|
|
continue eventLoop
|
|
}
|
|
mWon[b.Header.Miner] = struct{}{}
|
|
}
|
|
for _, b := range blks {
|
|
if err := m.api.SyncSubmitBlock(ctx, b); err != nil {
|
|
log.Errorf("failed to submit newly mined block: %s", err)
|
|
}
|
|
}
|
|
} else {
|
|
nextRound := time.Unix(int64(base.ts.MinTimestamp()+uint64(build.BlockDelay*base.nullRounds)), 0)
|
|
time.Sleep(time.Until(nextRound))
|
|
}
|
|
}
|
|
}
|
|
|
|
type MiningBase struct {
|
|
ts *types.TipSet
|
|
nullRounds uint64
|
|
}
|
|
|
|
func (m *Miner) GetBestMiningCandidate(ctx context.Context) (*MiningBase, error) {
|
|
bts, err := m.api.ChainHead(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if m.lastWork != nil {
|
|
if m.lastWork.ts.Equals(bts) {
|
|
return m.lastWork, nil
|
|
}
|
|
|
|
btsw, err := m.api.ChainTipSetWeight(ctx, bts)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ltsw, err := m.api.ChainTipSetWeight(ctx, m.lastWork.ts)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if types.BigCmp(btsw, ltsw) <= 0 {
|
|
return m.lastWork, nil
|
|
}
|
|
}
|
|
|
|
m.lastWork = &MiningBase{ts: bts}
|
|
return m.lastWork, nil
|
|
}
|
|
|
|
func (m *Miner) hasPower(ctx context.Context, addr address.Address, ts *types.TipSet) (bool, error) {
|
|
power, err := m.api.StateMinerPower(ctx, addr, ts)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
return power.MinerPower.Equals(types.NewInt(0)), nil
|
|
}
|
|
|
|
func (m *Miner) mineOne(ctx context.Context, addr address.Address, base *MiningBase) (*types.BlockMsg, error) {
|
|
log.Debugw("attempting to mine a block", "tipset", types.LogCids(base.ts.Cids()))
|
|
start := time.Now()
|
|
|
|
hasPower, err := m.hasPower(ctx, addr, base.ts)
|
|
if err != nil {
|
|
return nil, xerrors.Errorf("checking if miner is slashed: %w", err)
|
|
}
|
|
if hasPower {
|
|
// slashed or just have no power yet
|
|
base.nullRounds++
|
|
return nil, nil
|
|
}
|
|
|
|
ticket, err := m.computeTicket(ctx, addr, base)
|
|
if err != nil {
|
|
return nil, xerrors.Errorf("scratching ticket failed: %w", err)
|
|
}
|
|
|
|
win, proof, err := gen.IsRoundWinner(ctx, base.ts, int64(base.ts.Height()+base.nullRounds+1), addr, m.epp, m.api)
|
|
if err != nil {
|
|
return nil, xerrors.Errorf("failed to check if we win next round: %w", err)
|
|
}
|
|
|
|
if !win {
|
|
base.nullRounds++
|
|
return nil, nil
|
|
}
|
|
|
|
b, err := m.createBlock(base, addr, ticket, proof)
|
|
if err != nil {
|
|
return nil, xerrors.Errorf("failed to create block: %w", err)
|
|
}
|
|
log.Infow("mined new block", "cid", b.Cid(), "height", b.Header.Height)
|
|
|
|
dur := time.Now().Sub(start)
|
|
log.Infof("Creating block took %s", dur)
|
|
if dur > time.Second*build.BlockDelay {
|
|
log.Warn("CAUTION: block production took longer than the block delay. Your computer may not be fast enough to keep up")
|
|
}
|
|
|
|
return b, nil
|
|
}
|
|
|
|
func (m *Miner) computeVRF(ctx context.Context, addr address.Address, input []byte) ([]byte, error) {
|
|
w, err := m.getMinerWorker(ctx, addr, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return gen.ComputeVRF(ctx, m.api.WalletSign, w, addr, gen.DSepTicket, input)
|
|
}
|
|
|
|
func (m *Miner) getMinerWorker(ctx context.Context, addr address.Address, ts *types.TipSet) (address.Address, error) {
|
|
ret, err := m.api.StateCall(ctx, &types.Message{
|
|
From: addr,
|
|
To: addr,
|
|
Method: actors.MAMethods.GetWorkerAddr,
|
|
}, ts)
|
|
if err != nil {
|
|
return address.Undef, xerrors.Errorf("failed to get miner worker addr: %w", err)
|
|
}
|
|
|
|
if ret.ExitCode != 0 {
|
|
return address.Undef, xerrors.Errorf("failed to get miner worker addr (exit code %d)", ret.ExitCode)
|
|
}
|
|
|
|
w, err := address.NewFromBytes(ret.Return)
|
|
if err != nil {
|
|
return address.Undef, xerrors.Errorf("GetWorkerAddr returned malformed address: %w", err)
|
|
}
|
|
|
|
return w, nil
|
|
}
|
|
|
|
func (m *Miner) computeTicket(ctx context.Context, addr address.Address, base *MiningBase) (*types.Ticket, error) {
|
|
|
|
vrfBase := base.ts.MinTicket().VRFProof
|
|
|
|
vrfOut, err := m.computeVRF(ctx, addr, vrfBase)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &types.Ticket{
|
|
VRFProof: vrfOut,
|
|
}, nil
|
|
}
|
|
|
|
func (m *Miner) actorLookup(ctx context.Context, addr address.Address, ts *types.TipSet) (uint64, *types.BigInt, error) {
|
|
// TODO: strong opportunities for some caching in this method
|
|
act, err := m.api.StateGetActor(ctx, addr, ts)
|
|
if err != nil {
|
|
return 0, nil, xerrors.Errorf("looking up actor failed: %w", err)
|
|
}
|
|
|
|
msgs, err := m.api.ChainGetTipSetMessages(ctx, ts.Key())
|
|
if err != nil {
|
|
return 0, nil, xerrors.Errorf("failed to get tipset messages: %w", err)
|
|
}
|
|
|
|
balance := act.Balance
|
|
curnonce := act.Nonce
|
|
for _, m := range msgs {
|
|
if m.Message.From == addr {
|
|
if m.Message.Nonce != curnonce {
|
|
return 0, nil, xerrors.Errorf("tipset messages had bad nonce: %s had nonce %d, expected %d", m.Cid, m.Message.Nonce, curnonce)
|
|
}
|
|
curnonce++
|
|
balance = types.BigSub(balance, m.Message.RequiredFunds())
|
|
}
|
|
}
|
|
|
|
return curnonce, &balance, nil
|
|
}
|
|
|
|
func (m *Miner) createBlock(base *MiningBase, addr address.Address, ticket *types.Ticket, proof *types.EPostProof) (*types.BlockMsg, error) {
|
|
pending, err := m.api.MpoolPending(context.TODO(), base.ts)
|
|
if err != nil {
|
|
return nil, xerrors.Errorf("failed to get pending messages: %w", err)
|
|
}
|
|
|
|
msgs, err := selectMessages(context.TODO(), m.actorLookup, base, pending)
|
|
if err != nil {
|
|
return nil, xerrors.Errorf("message filtering failed: %w", err)
|
|
}
|
|
|
|
uts := base.ts.MinTimestamp() + uint64(build.BlockDelay*(base.nullRounds+1))
|
|
|
|
nheight := base.ts.Height() + base.nullRounds + 1
|
|
|
|
// why even return this? that api call could just submit it for us
|
|
return m.api.MinerCreateBlock(context.TODO(), addr, base.ts, ticket, proof, msgs, nheight, uint64(uts))
|
|
}
|
|
|
|
type actorLookup func(context.Context, address.Address, *types.TipSet) (uint64, *types.BigInt, error)
|
|
|
|
func selectMessages(ctx context.Context, al actorLookup, base *MiningBase, msgs []*types.SignedMessage) ([]*types.SignedMessage, error) {
|
|
out := make([]*types.SignedMessage, 0, len(msgs))
|
|
inclNonces := make(map[address.Address]uint64)
|
|
inclBalances := make(map[address.Address]types.BigInt)
|
|
for _, msg := range msgs {
|
|
if msg.Message.To == address.Undef {
|
|
log.Warnf("message in mempool had bad 'To' address")
|
|
continue
|
|
}
|
|
|
|
from := msg.Message.From
|
|
|
|
if _, ok := inclNonces[from]; !ok {
|
|
nonce, balance, err := al(ctx, from, base.ts)
|
|
if err != nil {
|
|
return nil, xerrors.Errorf("failed to check message sender balance: %w", err)
|
|
}
|
|
|
|
inclNonces[from] = nonce
|
|
inclBalances[from] = *balance
|
|
}
|
|
|
|
if inclBalances[from].LessThan(msg.Message.RequiredFunds()) {
|
|
log.Warnf("message in mempool does not have enough funds: %s", msg.Cid())
|
|
continue
|
|
}
|
|
|
|
if msg.Message.Nonce > inclNonces[from] {
|
|
log.Warnf("message in mempool has too high of a nonce (%d > %d) %s", msg.Message.Nonce, inclNonces[from], msg.Cid())
|
|
continue
|
|
}
|
|
|
|
if msg.Message.Nonce < inclNonces[from] {
|
|
log.Warnf("message in mempool has already used nonce (%d < %d), from %s, to %s, %s", msg.Message.Nonce, inclNonces[from], msg.Message.From, msg.Message.To, msg.Cid())
|
|
continue
|
|
}
|
|
|
|
inclNonces[from] = msg.Message.Nonce + 1
|
|
inclBalances[from] = types.BigSub(inclBalances[from], msg.Message.RequiredFunds())
|
|
|
|
out = append(out, msg)
|
|
}
|
|
return out, nil
|
|
}
|