gaspersic/go-ethereum
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

eth, miner: use miner for post-merge block production (#23256)

Browse Source 
* eth, miner: remove duplicated code

* eth/catalyst: remove unneeded code

* miner: keep update pending state even the Merge is happened

* eth, miner: rebase

* miner: fix tests

* eth, miner: address comments from marius

* miner: use empty zero randomness for pending blocks after the merge

* eth/catalyst: gofmt

* miner: add warning log for state recovery

* miner: ignore uncles for post-merge blocks

Co-authored-by: Péter Szilágyi <peterke@gmail.com>
This commit is contained in:
rjl493456442
2022-01-24 15:19:52 +08:00
committed by GitHub
parent bd615e0e5f
commit 78636ee568
8 changed files with 597 additions and 425 deletions
Download Patch File Download Diff File Expand all files Collapse all files

568
miner/worker.go
View File

@ -17,8 +17,8 @@
package miner
import (
"bytes"
"errors"
"fmt"
"math/big"
"sync"
"sync/atomic"
@ -54,14 +54,14 @@ const (
// resubmitAdjustChanSize is the size of resubmitting interval adjustment channel.
resubmitAdjustChanSize = 10
// miningLogAtDepth is the number of confirmations before logging successful mining.
miningLogAtDepth = 7
// sealingLogAtDepth is the number of confirmations before logging successful sealing.
sealingLogAtDepth = 7
// minRecommitInterval is the minimal time interval to recreate the mining block with
// minRecommitInterval is the minimal time interval to recreate the sealing block with
// any newly arrived transactions.
minRecommitInterval = 1 * time.Second
// maxRecommitInterval is the maximum time interval to recreate the mining block with
// maxRecommitInterval is the maximum time interval to recreate the sealing block with
// any newly arrived transactions.
maxRecommitInterval = 15 * time.Second
@ -77,20 +77,68 @@ const (
staleThreshold = 7
)
// environment is the worker's current environment and holds all of the current state information.
// environment is the worker's current environment and holds all
// information of the sealing block generation.
type environment struct {
signer types.Signer
state *state.StateDB // apply state changes here
ancestors mapset.Set // ancestor set (used for checking uncle parent validity)
family mapset.Set // family set (used for checking uncle invalidity)
uncles mapset.Set // uncle set
tcount int // tx count in cycle
gasPool *core.GasPool // available gas used to pack transactions
coinbase common.Address
header *types.Header
txs []*types.Transaction
receipts []*types.Receipt
uncles map[common.Hash]*types.Header
}
// copy creates a deep copy of environment.
func (env *environment) copy() *environment {
cpy := &environment{
signer: env.signer,
state: env.state.Copy(),
ancestors: env.ancestors.Clone(),
family: env.family.Clone(),
tcount: env.tcount,
coinbase: env.coinbase,
header: types.CopyHeader(env.header),
receipts: copyReceipts(env.receipts),
}
if env.gasPool != nil {
gasPool := *env.gasPool
cpy.gasPool = &gasPool
}
// The content of txs and uncles are immutable, unnecessary
// to do the expensive deep copy for them.
cpy.txs = make([]*types.Transaction, len(env.txs))
copy(cpy.txs, env.txs)
cpy.uncles = make(map[common.Hash]*types.Header)
for hash, uncle := range env.uncles {
cpy.uncles[hash] = uncle
}
return cpy
}
// unclelist returns the contained uncles as the list format.
func (env *environment) unclelist() []*types.Header {
var uncles []*types.Header
for _, uncle := range env.uncles {
uncles = append(uncles, uncle)
}
return uncles
}
// discard terminates the background prefetcher go-routine. It should
// always be called for all created environment instances otherwise
// the go-routine leak can happen.
func (env *environment) discard() {
if env.state == nil {
return
}
env.state.StopPrefetcher()
}
// task contains all information for consensus engine sealing and result submitting.
@ -114,6 +162,13 @@ type newWorkReq struct {
timestamp int64
}
// getWorkReq represents a request for getting a new sealing work with provided parameters.
type getWorkReq struct {
params *generateParams
err error
result chan *types.Block
}
// intervalAdjust represents a resubmitting interval adjustment.
type intervalAdjust struct {
ratio float64
@ -128,7 +183,6 @@ type worker struct {
engine consensus.Engine
eth Backend
chain *core.BlockChain
merger *consensus.Merger
// Feeds
pendingLogsFeed event.Feed
@ -144,6 +198,7 @@ type worker struct {
// Channels
newWorkCh chan *newWorkReq
getWorkCh chan *getWorkReq
taskCh chan *task
resultCh chan *types.Block
startCh chan struct{}
@ -191,7 +246,7 @@ type worker struct {
resubmitHook func(time.Duration, time.Duration) // Method to call upon updating resubmitting interval.
}
func newWorker(config *Config, chainConfig *params.ChainConfig, engine consensus.Engine, eth Backend, mux *event.TypeMux, isLocalBlock func(header *types.Header) bool, init bool, merger *consensus.Merger) *worker {
func newWorker(config *Config, chainConfig *params.ChainConfig, engine consensus.Engine, eth Backend, mux *event.TypeMux, isLocalBlock func(header *types.Header) bool, init bool) *worker {
worker := &worker{
config: config,
chainConfig: chainConfig,
@ -199,16 +254,16 @@ func newWorker(config *Config, chainConfig *params.ChainConfig, engine consensus
eth: eth,
mux: mux,
chain: eth.BlockChain(),
merger: merger,
isLocalBlock: isLocalBlock,
localUncles: make(map[common.Hash]*types.Block),
remoteUncles: make(map[common.Hash]*types.Block),
unconfirmed: newUnconfirmedBlocks(eth.BlockChain(), miningLogAtDepth),
unconfirmed: newUnconfirmedBlocks(eth.BlockChain(), sealingLogAtDepth),
pendingTasks: make(map[common.Hash]*task),
txsCh: make(chan core.NewTxsEvent, txChanSize),
chainHeadCh: make(chan core.ChainHeadEvent, chainHeadChanSize),
chainSideCh: make(chan core.ChainSideEvent, chainSideChanSize),
newWorkCh: make(chan *newWorkReq),
getWorkCh: make(chan *getWorkReq),
taskCh: make(chan *task),
resultCh: make(chan *types.Block, resultQueueSize),
exitCh: make(chan struct{}),
@ -264,15 +319,18 @@ func (w *worker) setExtra(extra []byte) {
// setRecommitInterval updates the interval for miner sealing work recommitting.
func (w *worker) setRecommitInterval(interval time.Duration) {
w.resubmitIntervalCh <- interval
select {
case w.resubmitIntervalCh <- interval:
case <-w.exitCh:
}
}
// disablePreseal disables pre-sealing mining feature
// disablePreseal disables pre-sealing feature
func (w *worker) disablePreseal() {
atomic.StoreUint32(&w.noempty, 1)
}
// enablePreseal enables pre-sealing mining feature
// enablePreseal enables pre-sealing feature
func (w *worker) enablePreseal() {
atomic.StoreUint32(&w.noempty, 0)
}
@ -350,13 +408,13 @@ func recalcRecommit(minRecommit, prev time.Duration, target float64, inc bool) t
return time.Duration(int64(next))
}
// newWorkLoop is a standalone goroutine to submit new mining work upon received events.
// newWorkLoop is a standalone goroutine to submit new sealing work upon received events.
func (w *worker) newWorkLoop(recommit time.Duration) {
defer w.wg.Done()
var (
interrupt *int32
minRecommit = recommit // minimal resubmit interval specified by user.
timestamp int64 // timestamp for each round of mining.
timestamp int64 // timestamp for each round of sealing.
)
timer := time.NewTimer(0)
@ -401,7 +459,7 @@ func (w *worker) newWorkLoop(recommit time.Duration) {
commit(false, commitInterruptNewHead)
case <-timer.C:
// If mining is running resubmit a new work cycle periodically to pull in
// If sealing is running resubmit a new work cycle periodically to pull in
// higher priced transactions. Disable this overhead for pending blocks.
if w.isRunning() && (w.chainConfig.Clique == nil || w.chainConfig.Clique.Period > 0) {
// Short circuit if no new transaction arrives.
@ -448,22 +506,36 @@ func (w *worker) newWorkLoop(recommit time.Duration) {
}
}
// mainLoop is a standalone goroutine to regenerate the sealing task based on the received event.
// mainLoop is responsible for generating and submitting sealing work based on
// the received event. It can support two modes: automatically generate task and
// submit it or return task according to given parameters for various proposes.
func (w *worker) mainLoop() {
defer w.wg.Done()
defer w.txsSub.Unsubscribe()
defer w.chainHeadSub.Unsubscribe()
defer w.chainSideSub.Unsubscribe()
defer func() {
if w.current != nil && w.current.state != nil {
w.current.state.StopPrefetcher()
if w.current != nil {
w.current.discard()
}
}()
cleanTicker := time.NewTicker(time.Second * 10)
defer cleanTicker.Stop()
for {
select {
case req := <-w.newWorkCh:
w.commitNewWork(req.interrupt, req.noempty, req.timestamp)
w.commitWork(req.interrupt, req.noempty, req.timestamp)
case req := <-w.getWorkCh:
block, err := w.generateWork(req.params)
if err != nil {
req.err = err
req.result <- nil
} else {
req.result <- block
}
case ev := <-w.chainSideCh:
// Short circuit for duplicate side blocks
@ -479,46 +551,40 @@ func (w *worker) mainLoop() {
} else {
w.remoteUncles[ev.Block.Hash()] = ev.Block
}
// If our mining block contains less than 2 uncle blocks,
// add the new uncle block if valid and regenerate a mining block.
if w.isRunning() && w.current != nil && w.current.uncles.Cardinality() < 2 {
// If our sealing block contains less than 2 uncle blocks,
// add the new uncle block if valid and regenerate a new
// sealing block for higher profit.
if w.isRunning() && w.current != nil && len(w.current.uncles) < 2 {
start := time.Now()
if err := w.commitUncle(w.current, ev.Block.Header()); err == nil {
var uncles []*types.Header
w.current.uncles.Each(func(item interface{}) bool {
hash, ok := item.(common.Hash)
if !ok {
return false
}
uncle, exist := w.localUncles[hash]
if !exist {
uncle, exist = w.remoteUncles[hash]
}
if !exist {
return false
}
uncles = append(uncles, uncle.Header())
return false
})
w.commit(uncles, nil, true, start)
w.commit(w.current.copy(), nil, true, start)
}
}
case <-cleanTicker.C:
chainHead := w.chain.CurrentBlock()
for hash, uncle := range w.localUncles {
if uncle.NumberU64()+staleThreshold <= chainHead.NumberU64() {
delete(w.localUncles, hash)
}
}
for hash, uncle := range w.remoteUncles {
if uncle.NumberU64()+staleThreshold <= chainHead.NumberU64() {
delete(w.remoteUncles, hash)
}
}
case ev := <-w.txsCh:
// Apply transactions to the pending state if we're not mining.
// Apply transactions to the pending state if we're not sealing
//
// Note all transactions received may not be continuous with transactions
// already included in the current mining block. These transactions will
// already included in the current sealing block. These transactions will
// be automatically eliminated.
if !w.isRunning() && w.current != nil {
// If block is already full, abort
if gp := w.current.gasPool; gp != nil && gp.Gas() < params.TxGas {
continue
}
w.mu.RLock()
coinbase := w.coinbase
w.mu.RUnlock()
txs := make(map[common.Address]types.Transactions)
for _, tx := range ev.Txs {
acc, _ := types.Sender(w.current.signer, tx)
@ -526,18 +592,19 @@ func (w *worker) mainLoop() {
}
txset := types.NewTransactionsByPriceAndNonce(w.current.signer, txs, w.current.header.BaseFee)
tcount := w.current.tcount
w.commitTransactions(txset, coinbase, nil)
// Only update the snapshot if any new transactons were added
w.commitTransactions(w.current, txset, nil)
// Only update the snapshot if any new transactions were added
// to the pending block
if tcount != w.current.tcount {
w.updateSnapshot()
w.updateSnapshot(w.current)
}
} else {
// Special case, if the consensus engine is 0 period clique(dev mode),
// submit mining work here since all empty submission will be rejected
// submit sealing work here since all empty submission will be rejected
// by clique. Of course the advance sealing(empty submission) is disabled.
if w.chainConfig.Clique != nil && w.chainConfig.Clique.Period == 0 {
w.commitNewWork(nil, true, time.Now().Unix())
w.commitWork(nil, true, time.Now().Unix())
}
}
atomic.AddInt32(&w.newTxs, int32(len(ev.Txs)))
@ -679,23 +746,35 @@ func (w *worker) resultLoop() {
}
}
// makeCurrent creates a new environment for the current cycle.
func (w *worker) makeCurrent(parent *types.Block, header *types.Header) error {
// makeEnv creates a new environment for the sealing block.
func (w *worker) makeEnv(parent *types.Block, header *types.Header, coinbase common.Address) (*environment, error) {
// Retrieve the parent state to execute on top and start a prefetcher for
// the miner to speed block sealing up a bit
// the miner to speed block sealing up a bit.
state, err := w.chain.StateAt(parent.Root())
if err != nil {
return err
// Note since the sealing block can be created upon the arbitrary parent
// block, but the state of parent block may already be pruned, so the necessary
// state recovery is needed here in the future.
//
// The maximum acceptable reorg depth can be limited by the finalised block
// somehow. TODO(rjl493456442) fix the hard-coded number here later.
state, err = w.eth.StateAtBlock(parent, 1024, nil, false, false)
log.Warn("Recovered mining state", "root", parent.Root(), "err", err)
}
if err != nil {
return nil, err
}
state.StartPrefetcher("miner")
// Note the passed coinbase may be different with header.Coinbase.
env := &environment{
signer: types.MakeSigner(w.chainConfig, header.Number),
state: state,
coinbase: coinbase,
ancestors: mapset.NewSet(),
family: mapset.NewSet(),
uncles: mapset.NewSet(),
header: header,
uncles: make(map[common.Hash]*types.Header),
}
// when 08 is processed ancestors contain 07 (quick block)
for _, ancestor := range w.chain.GetBlocksFromHash(parent.Hash(), 7) {
@ -707,20 +786,16 @@ func (w *worker) makeCurrent(parent *types.Block, header *types.Header) error {
}
// Keep track of transactions which return errors so they can be removed
env.tcount = 0
// Swap out the old work with the new one, terminating any leftover prefetcher
// processes in the mean time and starting a new one.
if w.current != nil && w.current.state != nil {
w.current.state.StopPrefetcher()
}
w.current = env
return nil
return env, nil
}
// commitUncle adds the given block to uncle block set, returns error if failed to add.
func (w *worker) commitUncle(env *environment, uncle *types.Header) error {
if w.isTTDReached(env.header) {
return errors.New("ignore uncle for beacon block")
}
hash := uncle.Hash()
if env.uncles.Contains(hash) {
if _, exist := env.uncles[hash]; exist {
return errors.New("uncle not unique")
}
if env.header.ParentHash == uncle.ParentHash {
@ -732,82 +807,58 @@ func (w *worker) commitUncle(env *environment, uncle *types.Header) error {
if env.family.Contains(hash) {
return errors.New("uncle already included")
}
env.uncles.Add(uncle.Hash())
env.uncles[hash] = uncle
return nil
}
// updateSnapshot updates pending snapshot block and state.
// Note this function assumes the current variable is thread safe.
func (w *worker) updateSnapshot() {
// updateSnapshot updates pending snapshot block, receipts and state.
func (w *worker) updateSnapshot(env *environment) {
w.snapshotMu.Lock()
defer w.snapshotMu.Unlock()
var uncles []*types.Header
w.current.uncles.Each(func(item interface{}) bool {
hash, ok := item.(common.Hash)
if !ok {
return false
}
uncle, exist := w.localUncles[hash]
if !exist {
uncle, exist = w.remoteUncles[hash]
}
if !exist {
return false
}
uncles = append(uncles, uncle.Header())
return false
})
w.snapshotBlock = types.NewBlock(
w.current.header,
w.current.txs,
uncles,
w.current.receipts,
env.header,
env.txs,
env.unclelist(),
env.receipts,
trie.NewStackTrie(nil),
)
w.snapshotReceipts = copyReceipts(w.current.receipts)
w.snapshotState = w.current.state.Copy()
w.snapshotReceipts = copyReceipts(env.receipts)
w.snapshotState = env.state.Copy()
}
func (w *worker) commitTransaction(tx *types.Transaction, coinbase common.Address) ([]*types.Log, error) {
snap := w.current.state.Snapshot()
func (w *worker) commitTransaction(env *environment, tx *types.Transaction) ([]*types.Log, error) {
snap := env.state.Snapshot()
receipt, err := core.ApplyTransaction(w.chainConfig, w.chain, &coinbase, w.current.gasPool, w.current.state, w.current.header, tx, &w.current.header.GasUsed, *w.chain.GetVMConfig())
receipt, err := core.ApplyTransaction(w.chainConfig, w.chain, &env.coinbase, env.gasPool, env.state, env.header, tx, &env.header.GasUsed, *w.chain.GetVMConfig())
if err != nil {
w.current.state.RevertToSnapshot(snap)
env.state.RevertToSnapshot(snap)
return nil, err
}
w.current.txs = append(w.current.txs, tx)
w.current.receipts = append(w.current.receipts, receipt)
env.txs = append(env.txs, tx)
env.receipts = append(env.receipts, receipt)
return receipt.Logs, nil
}
func (w *worker) commitTransactions(txs *types.TransactionsByPriceAndNonce, coinbase common.Address, interrupt *int32) bool {
// Short circuit if current is nil
if w.current == nil {
return true
func (w *worker) commitTransactions(env *environment, txs *types.TransactionsByPriceAndNonce, interrupt *int32) bool {
gasLimit := env.header.GasLimit
if env.gasPool == nil {
env.gasPool = new(core.GasPool).AddGas(gasLimit)
}
gasLimit := w.current.header.GasLimit
if w.current.gasPool == nil {
w.current.gasPool = new(core.GasPool).AddGas(gasLimit)
}
var coalescedLogs []*types.Log
for {
// In the following three cases, we will interrupt the execution of the transaction.
// (1) new head block event arrival, the interrupt signal is 1
// (2) worker start or restart, the interrupt signal is 1
// (3) worker recreate the mining block with any newly arrived transactions, the interrupt signal is 2.
// (3) worker recreate the sealing block with any newly arrived transactions, the interrupt signal is 2.
// For the first two cases, the semi-finished work will be discarded.
// For the third case, the semi-finished work will be submitted to the consensus engine.
if interrupt != nil && atomic.LoadInt32(interrupt) != commitInterruptNone {
// Notify resubmit loop to increase resubmitting interval due to too frequent commits.
if atomic.LoadInt32(interrupt) == commitInterruptResubmit {
ratio := float64(gasLimit-w.current.gasPool.Gas()) / float64(gasLimit)
ratio := float64(gasLimit-env.gasPool.Gas()) / float64(gasLimit)
if ratio < 0.1 {
ratio = 0.1
}
@ -819,8 +870,8 @@ func (w *worker) commitTransactions(txs *types.TransactionsByPriceAndNonce, coin
return atomic.LoadInt32(interrupt) == commitInterruptNewHead
}
// If we don't have enough gas for any further transactions then we're done
if w.current.gasPool.Gas() < params.TxGas {
log.Trace("Not enough gas for further transactions", "have", w.current.gasPool, "want", params.TxGas)
if env.gasPool.Gas() < params.TxGas {
log.Trace("Not enough gas for further transactions", "have", env.gasPool, "want", params.TxGas)
break
}
// Retrieve the next transaction and abort if all done
@ -832,19 +883,19 @@ func (w *worker) commitTransactions(txs *types.TransactionsByPriceAndNonce, coin
// during transaction acceptance is the transaction pool.
//
// We use the eip155 signer regardless of the current hf.
from, _ := types.Sender(w.current.signer, tx)
from, _ := types.Sender(env.signer, tx)
// Check whether the tx is replay protected. If we're not in the EIP155 hf
// phase, start ignoring the sender until we do.
if tx.Protected() && !w.chainConfig.IsEIP155(w.current.header.Number) {
if tx.Protected() && !w.chainConfig.IsEIP155(env.header.Number) {
log.Trace("Ignoring reply protected transaction", "hash", tx.Hash(), "eip155", w.chainConfig.EIP155Block)
txs.Pop()
continue
}
// Start executing the transaction
w.current.state.Prepare(tx.Hash(), w.current.tcount)
env.state.Prepare(tx.Hash(), env.tcount)
logs, err := w.commitTransaction(tx, coinbase)
logs, err := w.commitTransaction(env, tx)
switch {
case errors.Is(err, core.ErrGasLimitReached):
// Pop the current out-of-gas transaction without shifting in the next from the account
@ -864,7 +915,7 @@ func (w *worker) commitTransactions(txs *types.TransactionsByPriceAndNonce, coin
case errors.Is(err, nil):
// Everything ok, collect the logs and shift in the next transaction from the same account
coalescedLogs = append(coalescedLogs, logs...)
w.current.tcount++
env.tcount++
txs.Shift()
case errors.Is(err, core.ErrTxTypeNotSupported):
@ -881,8 +932,8 @@ func (w *worker) commitTransactions(txs *types.TransactionsByPriceAndNonce, coin
}
if !w.isRunning() && len(coalescedLogs) > 0 {
// We don't push the pendingLogsEvent while we are mining. The reason is that
// when we are mining, the worker will regenerate a mining block every 3 seconds.
// We don't push the pendingLogsEvent while we are sealing. The reason is that
// when we are sealing, the worker will regenerate a sealing block every 3 seconds.
// In order to avoid pushing the repeated pendingLog, we disable the pending log pushing.
// make a copy, the state caches the logs and these logs get "upgraded" from pending to mined
@ -903,24 +954,56 @@ func (w *worker) commitTransactions(txs *types.TransactionsByPriceAndNonce, coin
return false
}
// commitNewWork generates several new sealing tasks based on the parent block.
func (w *worker) commitNewWork(interrupt *int32, noempty bool, timestamp int64) {
// generateParams wraps various of settings for generating sealing task.
type generateParams struct {
timestamp uint64 // The timstamp for sealing task
forceTime bool // Flag whether the given timestamp is immutable or not
parentHash common.Hash // Parent block hash, empty means the latest chain head
coinbase common.Address // The fee recipient address for including transaction
random common.Hash // The randomness generated by beacon chain, empty before the merge
noUncle bool // Flag whether the uncle block inclusion is allowed
noExtra bool // Flag whether the extra field assignment is allowed
}
// prepareWork constructs the sealing task according to the given parameters,
// either based on the last chain head or specified parent. In this function
// the pending transactions are not filled yet, only the empty task returned.
func (w *worker) prepareWork(genParams *generateParams) (*environment, error) {
w.mu.RLock()
defer w.mu.RUnlock()
tstart := time.Now()
// Find the parent block for sealing task
parent := w.chain.CurrentBlock()
if parent.Time() >= uint64(timestamp) {
timestamp = int64(parent.Time() + 1)
if genParams.parentHash != (common.Hash{}) {
parent = w.chain.GetBlockByHash(genParams.parentHash)
}
if parent == nil {
return nil, fmt.Errorf("missing parent")
}
// Sanity check the timestamp correctness, recap the timestamp
// to parent+1 if the mutation is allowed.
timestamp := genParams.timestamp
if parent.Time() >= timestamp {
if genParams.forceTime {
return nil, fmt.Errorf("invalid timestamp, parent %d given %d", parent.Time(), timestamp)
}
timestamp = parent.Time() + 1
}
// Construct the sealing block header, set the extra field if it's allowed
num := parent.Number()
header := &types.Header{
ParentHash: parent.Hash(),
Number: num.Add(num, common.Big1),
GasLimit: core.CalcGasLimit(parent.GasLimit(), w.config.GasCeil),
Extra: w.extra,
Time: uint64(timestamp),
Time: timestamp,
Coinbase: genParams.coinbase,
}
if !genParams.noExtra && len(w.extra) != 0 {
header.Extra = w.extra
}
// Set the randomness field from the beacon chain if it's available.
if genParams.random != (common.Hash{}) {
header.MixDigest = genParams.random
}
// Set baseFee and GasLimit if we are on an EIP-1559 chain
if w.chainConfig.IsLondon(header.Number) {
@ -930,83 +1013,47 @@ func (w *worker) commitNewWork(interrupt *int32, noempty bool, timestamp int64)
header.GasLimit = core.CalcGasLimit(parentGasLimit, w.config.GasCeil)
}
}
// Only set the coinbase if our consensus engine is running (avoid spurious block rewards)
if w.isRunning() {
if w.coinbase == (common.Address{}) {
log.Error("Refusing to mine without etherbase")
return
}
header.Coinbase = w.coinbase
}
// Run the consensus preparation with the default or customized consensus engine.
if err := w.engine.Prepare(w.chain, header); err != nil {
log.Error("Failed to prepare header for mining", "err", err)
return
}
// If we are care about TheDAO hard-fork check whether to override the extra-data or not
if daoBlock := w.chainConfig.DAOForkBlock; daoBlock != nil {
// Check whether the block is among the fork extra-override range
limit := new(big.Int).Add(daoBlock, params.DAOForkExtraRange)
if header.Number.Cmp(daoBlock) >= 0 && header.Number.Cmp(limit) < 0 {
// Depending whether we support or oppose the fork, override differently
if w.chainConfig.DAOForkSupport {
header.Extra = common.CopyBytes(params.DAOForkBlockExtra)
} else if bytes.Equal(header.Extra, params.DAOForkBlockExtra) {
header.Extra = []byte{} // If miner opposes, don't let it use the reserved extra-data
}
}
log.Error("Failed to prepare header for sealing", "err", err)
return nil, err
}
// Could potentially happen if starting to mine in an odd state.
err := w.makeCurrent(parent, header)
// Note genParams.coinbase can be different with header.Coinbase
// since clique algorithm can modify the coinbase field in header.
env, err := w.makeEnv(parent, header, genParams.coinbase)
if err != nil {
log.Error("Failed to create mining context", "err", err)
return
log.Error("Failed to create sealing context", "err", err)
return nil, err
}
// Create the current work task and check any fork transitions needed
env := w.current
if w.chainConfig.DAOForkSupport && w.chainConfig.DAOForkBlock != nil && w.chainConfig.DAOForkBlock.Cmp(header.Number) == 0 {
misc.ApplyDAOHardFork(env.state)
}
// Accumulate the uncles for the current block
uncles := make([]*types.Header, 0, 2)
commitUncles := func(blocks map[common.Hash]*types.Block) {
// Clean up stale uncle blocks first
for hash, uncle := range blocks {
if uncle.NumberU64()+staleThreshold <= header.Number.Uint64() {
delete(blocks, hash)
}
}
for hash, uncle := range blocks {
if len(uncles) == 2 {
break
}
if err := w.commitUncle(env, uncle.Header()); err != nil {
log.Trace("Possible uncle rejected", "hash", hash, "reason", err)
} else {
log.Debug("Committing new uncle to block", "hash", hash)
uncles = append(uncles, uncle.Header())
// Accumulate the uncles for the sealing work only if it's allowed.
if !genParams.noUncle {
commitUncles := func(blocks map[common.Hash]*types.Block) {
for hash, uncle := range blocks {
if len(env.uncles) == 2 {
break
}
if err := w.commitUncle(env, uncle.Header()); err != nil {
log.Trace("Possible uncle rejected", "hash", hash, "reason", err)
} else {
log.Debug("Committing new uncle to block", "hash", hash)
}
}
}
// Prefer to locally generated uncle
commitUncles(w.localUncles)
commitUncles(w.remoteUncles)
}
// Prefer to locally generated uncle
commitUncles(w.localUncles)
commitUncles(w.remoteUncles)
// Create an empty block based on temporary copied state for
// sealing in advance without waiting block execution finished.
if !noempty && atomic.LoadUint32(&w.noempty) == 0 {
w.commit(uncles, nil, false, tstart)
}
return env, nil
}
// fillTransactions retrieves the pending transactions from the txpool and fills them
// into the given sealing block. The transaction selection and ordering strategy can
// be customized with the plugin in the future.
func (w *worker) fillTransactions(interrupt *int32, env *environment) {
// Split the pending transactions into locals and remotes
// Fill the block with all available pending transactions.
pending := w.eth.TxPool().Pending(true)
// Short circuit if there is no available pending transactions.
// But if we disable empty precommit already, ignore it. Since
// empty block is necessary to keep the liveness of the network.
if len(pending) == 0 && atomic.LoadUint32(&w.noempty) == 0 {
w.updateSnapshot()
return
}
// Split the pending transactions into locals and remotes
localTxs, remoteTxs := make(map[common.Address]types.Transactions), pending
for _, account := range w.eth.TxPool().Locals() {
if txs := remoteTxs[account]; len(txs) > 0 {
@ -1015,57 +1062,136 @@ func (w *worker) commitNewWork(interrupt *int32, noempty bool, timestamp int64)
}
}
if len(localTxs) > 0 {
txs := types.NewTransactionsByPriceAndNonce(w.current.signer, localTxs, header.BaseFee)
if w.commitTransactions(txs, w.coinbase, interrupt) {
txs := types.NewTransactionsByPriceAndNonce(env.signer, localTxs, env.header.BaseFee)
if w.commitTransactions(env, txs, interrupt) {
return
}
}
if len(remoteTxs) > 0 {
txs := types.NewTransactionsByPriceAndNonce(w.current.signer, remoteTxs, header.BaseFee)
if w.commitTransactions(txs, w.coinbase, interrupt) {
txs := types.NewTransactionsByPriceAndNonce(env.signer, remoteTxs, env.header.BaseFee)
if w.commitTransactions(env, txs, interrupt) {
return
}
}
w.commit(uncles, w.fullTaskHook, true, tstart)
}
// generateWork generates a sealing block based on the given parameters.
func (w *worker) generateWork(params *generateParams) (*types.Block, error) {
work, err := w.prepareWork(params)
if err != nil {
return nil, err
}
defer work.discard()
w.fillTransactions(nil, work)
return w.engine.FinalizeAndAssemble(w.chain, work.header, work.state, work.txs, work.unclelist(), work.receipts)
}
// commitWork generates several new sealing tasks based on the parent block
// and submit them to the sealer.
func (w *worker) commitWork(interrupt *int32, noempty bool, timestamp int64) {
start := time.Now()
// Set the coinbase if the worker is running or it's required
var coinbase common.Address
if w.isRunning() {
if w.coinbase == (common.Address{}) {
log.Error("Refusing to mine without etherbase")
return
}
coinbase = w.coinbase // Use the preset address as the fee recipient
}
work, err := w.prepareWork(&generateParams{
timestamp: uint64(timestamp),
coinbase: coinbase,
})
if err != nil {
return
}
// Create an empty block based on temporary copied state for
// sealing in advance without waiting block execution finished.
if !noempty && atomic.LoadUint32(&w.noempty) == 0 {
w.commit(work.copy(), nil, false, start)
}
// Fill pending transactions from the txpool
w.fillTransactions(interrupt, work)
w.commit(work.copy(), w.fullTaskHook, true, start)
// Swap out the old work with the new one, terminating any leftover
// prefetcher processes in the mean time and starting a new one.
if w.current != nil {
w.current.discard()
}
w.current = work
}
// commit runs any post-transaction state modifications, assembles the final block
// and commits new work if consensus engine is running.
func (w *worker) commit(uncles []*types.Header, interval func(), update bool, start time.Time) error {
// Deep copy receipts here to avoid interaction between different tasks.
receipts := copyReceipts(w.current.receipts)
s := w.current.state.Copy()
block, err := w.engine.FinalizeAndAssemble(w.chain, w.current.header, s, w.current.txs, uncles, receipts)
if err != nil {
return err
}
// Note the assumption is held that the mutation is allowed to the passed env, do
// the deep copy first.
func (w *worker) commit(env *environment, interval func(), update bool, start time.Time) error {
if w.isRunning() {
if interval != nil {
interval()
}
// If we're post merge, just ignore
td, ttd := w.chain.GetTd(block.ParentHash(), block.NumberU64()-1), w.chain.Config().TerminalTotalDifficulty
if td != nil && ttd != nil && td.Cmp(ttd) >= 0 {
return nil
block, err := w.engine.FinalizeAndAssemble(w.chain, env.header, env.state, env.txs, env.unclelist(), env.receipts)
if err != nil {
return err
}
select {
case w.taskCh <- &task{receipts: receipts, state: s, block: block, createdAt: time.Now()}:
w.unconfirmed.Shift(block.NumberU64() - 1)
log.Info("Commit new mining work", "number", block.Number(), "sealhash", w.engine.SealHash(block.Header()),
"uncles", len(uncles), "txs", w.current.tcount,
"gas", block.GasUsed(), "fees", totalFees(block, receipts),
"elapsed", common.PrettyDuration(time.Since(start)))
// If we're post merge, just ignore
if !w.isTTDReached(block.Header()) {
select {
case w.taskCh <- &task{receipts: env.receipts, state: env.state, block: block, createdAt: time.Now()}:
w.unconfirmed.Shift(block.NumberU64() - 1)
log.Info("Commit new sealing work", "number", block.Number(), "sealhash", w.engine.SealHash(block.Header()),
"uncles", len(env.uncles), "txs", env.tcount,
"gas", block.GasUsed(), "fees", totalFees(block, env.receipts),
"elapsed", common.PrettyDuration(time.Since(start)))
case <-w.exitCh:
log.Info("Worker has exited")
case <-w.exitCh:
log.Info("Worker has exited")
}
}
}
if update {
w.updateSnapshot()
w.updateSnapshot(env)
}
return nil
}
// getSealingBlock generates the sealing block based on the given parameters.
func (w *worker) getSealingBlock(parent common.Hash, timestamp uint64, coinbase common.Address, random common.Hash) (*types.Block, error) {
req := &getWorkReq{
params: &generateParams{
timestamp: timestamp,
forceTime: true,
parentHash: parent,
coinbase: coinbase,
random: random,
noUncle: true,
noExtra: true,
},
result: make(chan *types.Block, 1),
}
select {
case w.getWorkCh <- req:
block := <-req.result
if block == nil {
return nil, req.err
}
return block, nil
case <-w.exitCh:
return nil, errors.New("miner closed")
}
}
// isTTDReached returns the indicator if the given block has reached the total
// terminal difficulty for The Merge transition.
func (w *worker) isTTDReached(header *types.Header) bool {
td, ttd := w.chain.GetTd(header.ParentHash, header.Number.Uint64()-1), w.chain.Config().TerminalTotalDifficulty
return td != nil && ttd != nil && td.Cmp(ttd) >= 0
}
// copyReceipts makes a deep copy of the given receipts.
func copyReceipts(receipts []*types.Receipt) []*types.Receipt {
result := make([]*types.Receipt, len(receipts))