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authorPéter Szilágyi <peterke@gmail.com>2017-04-05 06:16:29 +0800
committerFelix Lange <fjl@users.noreply.github.com>2017-04-05 06:16:29 +0800
commit09777952ee476ff80d4b6e63b5041ff5ca0e441b (patch)
treee85320f88f548201e3476b3e7095e96fd071617b /miner
parente50a5b77712d891ff409aa942a5cbc24e721b332 (diff)
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core, consensus: pluggable consensus engines (#3817)
This commit adds pluggable consensus engines to go-ethereum. In short, it introduces a generic consensus interface, and refactors the entire codebase to use this interface.
Diffstat (limited to 'miner')
-rw-r--r--miner/agent.go47
-rw-r--r--miner/miner.go31
-rw-r--r--miner/remote_agent.go33
-rw-r--r--miner/unconfirmed.go9
-rw-r--r--miner/worker.go84
5 files changed, 96 insertions, 108 deletions
diff --git a/miner/agent.go b/miner/agent.go
index 3c407f20b..855892a07 100644
--- a/miner/agent.go
+++ b/miner/agent.go
@@ -17,56 +17,49 @@
package miner
import (
- "fmt"
"sync"
"sync/atomic"
- "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/core/types"
+ "github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/log"
- "github.com/ethereum/go-ethereum/pow"
)
type CpuAgent struct {
mu sync.Mutex
workCh chan *Work
- quit chan struct{}
+ stop chan struct{}
quitCurrentOp chan struct{}
returnCh chan<- *Result
- index int
- pow pow.PoW
+ chain consensus.ChainReader
+ engine consensus.Engine
isMining int32 // isMining indicates whether the agent is currently mining
}
-func NewCpuAgent(index int, pow pow.PoW) *CpuAgent {
+func NewCpuAgent(chain consensus.ChainReader, engine consensus.Engine) *CpuAgent {
miner := &CpuAgent{
- pow: pow,
- index: index,
- quit: make(chan struct{}),
+ chain: chain,
+ engine: engine,
+ stop: make(chan struct{}, 1),
workCh: make(chan *Work, 1),
}
-
return miner
}
func (self *CpuAgent) Work() chan<- *Work { return self.workCh }
-func (self *CpuAgent) Pow() pow.PoW { return self.pow }
func (self *CpuAgent) SetReturnCh(ch chan<- *Result) { self.returnCh = ch }
func (self *CpuAgent) Stop() {
- close(self.quit)
+ self.stop <- struct{}{}
}
func (self *CpuAgent) Start() {
-
if !atomic.CompareAndSwapInt32(&self.isMining, 0, 1) {
return // agent already started
}
-
go self.update()
}
@@ -82,7 +75,7 @@ out:
self.quitCurrentOp = make(chan struct{})
go self.mine(work, self.quitCurrentOp)
self.mu.Unlock()
- case <-self.quit:
+ case <-self.stop:
self.mu.Lock()
if self.quitCurrentOp != nil {
close(self.quitCurrentOp)
@@ -99,27 +92,27 @@ done:
select {
case <-self.workCh:
default:
- close(self.workCh)
break done
}
}
-
atomic.StoreInt32(&self.isMining, 0)
}
func (self *CpuAgent) mine(work *Work, stop <-chan struct{}) {
- log.Debug(fmt.Sprintf("(re)started agent[%d]. mining...\n", self.index))
-
- // Mine
- nonce, mixDigest := self.pow.Search(work.Block, stop)
- if nonce != 0 {
- block := work.Block.WithMiningResult(types.EncodeNonce(nonce), common.BytesToHash(mixDigest))
- self.returnCh <- &Result{work, block}
+ if result, err := self.engine.Seal(self.chain, work.Block, stop); result != nil {
+ log.Info("Successfully sealed new block", "number", result.Number(), "hash", result.Hash())
+ self.returnCh <- &Result{work, result}
} else {
+ if err != nil {
+ log.Warn("Block sealing failed", "err", err)
+ }
self.returnCh <- nil
}
}
func (self *CpuAgent) GetHashRate() int64 {
- return int64(self.pow.Hashrate())
+ if pow, ok := self.engine.(consensus.PoW); ok {
+ return int64(pow.Hashrate())
+ }
+ return 0
}
diff --git a/miner/miner.go b/miner/miner.go
index dc0591b9a..453fff04d 100644
--- a/miner/miner.go
+++ b/miner/miner.go
@@ -24,6 +24,7 @@ import (
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/common"
+ "github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
@@ -32,7 +33,6 @@ import (
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/params"
- "github.com/ethereum/go-ethereum/pow"
)
// Backend wraps all methods required for mining.
@@ -49,24 +49,24 @@ type Miner struct {
worker *worker
- threads int
coinbase common.Address
mining int32
eth Backend
- pow pow.PoW
+ engine consensus.Engine
canStart int32 // can start indicates whether we can start the mining operation
shouldStart int32 // should start indicates whether we should start after sync
}
-func New(eth Backend, config *params.ChainConfig, mux *event.TypeMux, pow pow.PoW) *Miner {
+func New(eth Backend, config *params.ChainConfig, mux *event.TypeMux, engine consensus.Engine) *Miner {
miner := &Miner{
eth: eth,
mux: mux,
- pow: pow,
- worker: newWorker(config, common.Address{}, eth, mux),
+ engine: engine,
+ worker: newWorker(config, engine, common.Address{}, eth, mux),
canStart: 1,
}
+ miner.Register(NewCpuAgent(eth.BlockChain(), engine))
go miner.update()
return miner
@@ -86,7 +86,7 @@ out:
if self.Mining() {
self.Stop()
atomic.StoreInt32(&self.shouldStart, 1)
- log.Info(fmt.Sprint("Mining operation aborted due to sync operation"))
+ log.Info("Mining aborted due to sync")
}
case downloader.DoneEvent, downloader.FailedEvent:
shouldStart := atomic.LoadInt32(&self.shouldStart) == 1
@@ -94,7 +94,7 @@ out:
atomic.StoreInt32(&self.canStart, 1)
atomic.StoreInt32(&self.shouldStart, 0)
if shouldStart {
- self.Start(self.coinbase, self.threads)
+ self.Start(self.coinbase)
}
// unsubscribe. we're only interested in this event once
events.Unsubscribe()
@@ -116,23 +116,18 @@ func (m *Miner) SetGasPrice(price *big.Int) {
m.worker.setGasPrice(price)
}
-func (self *Miner) Start(coinbase common.Address, threads int) {
+func (self *Miner) Start(coinbase common.Address) {
atomic.StoreInt32(&self.shouldStart, 1)
self.worker.setEtherbase(coinbase)
self.coinbase = coinbase
- self.threads = threads
if atomic.LoadInt32(&self.canStart) == 0 {
- log.Info(fmt.Sprint("Can not start mining operation due to network sync (starts when finished)"))
+ log.Info("Network syncing, will start miner afterwards")
return
}
atomic.StoreInt32(&self.mining, 1)
- for i := 0; i < threads; i++ {
- self.worker.register(NewCpuAgent(i, self.pow))
- }
-
- log.Info(fmt.Sprintf("Starting mining operation (CPU=%d TOT=%d)\n", threads, len(self.worker.agents)))
+ log.Info("Starting mining operation")
self.worker.start()
self.worker.commitNewWork()
}
@@ -159,7 +154,9 @@ func (self *Miner) Mining() bool {
}
func (self *Miner) HashRate() (tot int64) {
- tot += int64(self.pow.Hashrate())
+ if pow, ok := self.engine.(consensus.PoW); ok {
+ tot += int64(pow.Hashrate())
+ }
// do we care this might race? is it worth we're rewriting some
// aspects of the worker/locking up agents so we can get an accurate
// hashrate?
diff --git a/miner/remote_agent.go b/miner/remote_agent.go
index 08c5fc6f0..bb223ba1b 100644
--- a/miner/remote_agent.go
+++ b/miner/remote_agent.go
@@ -18,16 +18,16 @@ package miner
import (
"errors"
- "fmt"
"math/big"
"sync"
"sync/atomic"
"time"
"github.com/ethereum/go-ethereum/common"
+ "github.com/ethereum/go-ethereum/consensus"
+ "github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/log"
- "github.com/ethereum/go-ethereum/pow"
)
type hashrate struct {
@@ -42,7 +42,8 @@ type RemoteAgent struct {
workCh chan *Work
returnCh chan<- *Result
- pow pow.PoW
+ chain consensus.ChainReader
+ engine consensus.Engine
currentWork *Work
work map[common.Hash]*Work
@@ -52,9 +53,10 @@ type RemoteAgent struct {
running int32 // running indicates whether the agent is active. Call atomically
}
-func NewRemoteAgent(pow pow.PoW) *RemoteAgent {
+func NewRemoteAgent(chain consensus.ChainReader, engine consensus.Engine) *RemoteAgent {
return &RemoteAgent{
- pow: pow,
+ chain: chain,
+ engine: engine,
work: make(map[common.Hash]*Work),
hashrate: make(map[common.Hash]hashrate),
}
@@ -114,7 +116,7 @@ func (a *RemoteAgent) GetWork() ([3]string, error) {
block := a.currentWork.Block
res[0] = block.HashNoNonce().Hex()
- seedHash := pow.EthashSeedHash(block.NumberU64())
+ seedHash := ethash.SeedHash(block.NumberU64())
res[1] = common.BytesToHash(seedHash).Hex()
// Calculate the "target" to be returned to the external miner
n := big.NewInt(1)
@@ -129,8 +131,8 @@ func (a *RemoteAgent) GetWork() ([3]string, error) {
return res, errors.New("No work available yet, don't panic.")
}
-// SubmitWork tries to inject a PoW solution tinto the remote agent, returning
-// whether the solution was acceted or not (not can be both a bad PoW as well as
+// SubmitWork tries to inject a pow solution into the remote agent, returning
+// whether the solution was accepted or not (not can be both a bad pow as well as
// any other error, like no work pending).
func (a *RemoteAgent) SubmitWork(nonce types.BlockNonce, mixDigest, hash common.Hash) bool {
a.mu.Lock()
@@ -139,15 +141,20 @@ func (a *RemoteAgent) SubmitWork(nonce types.BlockNonce, mixDigest, hash common.
// Make sure the work submitted is present
work := a.work[hash]
if work == nil {
- log.Info(fmt.Sprintf("Work was submitted for %x but no pending work found", hash))
+ log.Info("Work submitted but none pending", "hash", hash)
return false
}
- // Make sure the PoW solutions is indeed valid
- block := work.Block.WithMiningResult(nonce, mixDigest)
- if err := a.pow.Verify(block); err != nil {
- log.Warn(fmt.Sprintf("Invalid PoW submitted for %x: %v", hash, err))
+ // Make sure the Engine solutions is indeed valid
+ result := work.Block.Header()
+ result.Nonce = nonce
+ result.MixDigest = mixDigest
+
+ if err := a.engine.VerifySeal(a.chain, result); err != nil {
+ log.Warn("Invalid proof-of-work submitted", "hash", hash, "err", err)
return false
}
+ block := work.Block.WithSeal(result)
+
// Solutions seems to be valid, return to the miner and notify acceptance
a.returnCh <- &Result{work, block}
delete(a.work, hash)
diff --git a/miner/unconfirmed.go b/miner/unconfirmed.go
index bb7d0ff26..ee52d8512 100644
--- a/miner/unconfirmed.go
+++ b/miner/unconfirmed.go
@@ -18,7 +18,6 @@ package miner
import (
"container/ring"
- "fmt"
"sync"
"github.com/ethereum/go-ethereum/common"
@@ -80,7 +79,7 @@ func (set *unconfirmedBlocks) Insert(index uint64, hash common.Hash) {
set.blocks.Move(-1).Link(item)
}
// Display a log for the user to notify of a new mined block unconfirmed
- log.Info(fmt.Sprintf("🔨 mined potential block #%d [%x…], waiting for %d blocks to confirm", index, hash.Bytes()[:4], set.depth))
+ log.Info("🔨 mined potential block", "number", index, "hash", hash)
}
// Shift drops all unconfirmed blocks from the set which exceed the unconfirmed sets depth
@@ -100,11 +99,11 @@ func (set *unconfirmedBlocks) Shift(height uint64) {
header := set.chain.GetHeaderByNumber(next.index)
switch {
case header == nil:
- log.Warn(fmt.Sprintf("failed to retrieve header of mined block #%d [%x…]", next.index, next.hash.Bytes()[:4]))
+ log.Warn("Failed to retrieve header of mined block", "number", next.index, "hash", next.hash)
case header.Hash() == next.hash:
- log.Info(fmt.Sprintf("🔗 mined block #%d [%x…] reached canonical chain", next.index, next.hash.Bytes()[:4]))
+ log.Info("🔗 block reached canonical chain", "number", next.index, "hash", next.hash)
default:
- log.Info(fmt.Sprintf("⑂ mined block #%d [%x…] became a side fork", next.index, next.hash.Bytes()[:4]))
+ log.Info("⑂ block became a side fork", "number", next.index, "hash", next.hash)
}
// Drop the block out of the ring
if set.blocks.Value == set.blocks.Next().Value {
diff --git a/miner/worker.go b/miner/worker.go
index 2f090924e..347de4e08 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -26,6 +26,8 @@ import (
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/common"
+ "github.com/ethereum/go-ethereum/consensus"
+ "github.com/ethereum/go-ethereum/consensus/misc"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
@@ -34,7 +36,6 @@ import (
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/params"
- "github.com/ethereum/go-ethereum/pow"
"gopkg.in/fatih/set.v0"
)
@@ -84,6 +85,7 @@ type Result struct {
// worker is the main object which takes care of applying messages to the new state
type worker struct {
config *params.ChainConfig
+ engine consensus.Engine
mu sync.Mutex
@@ -94,7 +96,6 @@ type worker struct {
agents map[Agent]struct{}
recv chan *Result
- pow pow.PoW
eth Backend
chain *core.BlockChain
@@ -123,9 +124,10 @@ type worker struct {
fullValidation bool
}
-func newWorker(config *params.ChainConfig, coinbase common.Address, eth Backend, mux *event.TypeMux) *worker {
+func newWorker(config *params.ChainConfig, engine consensus.Engine, coinbase common.Address, eth Backend, mux *event.TypeMux) *worker {
worker := &worker{
config: config,
+ engine: engine,
eth: eth,
mux: mux,
chainDb: eth.ChainDb(),
@@ -209,16 +211,10 @@ func (self *worker) stop() {
self.mu.Lock()
defer self.mu.Unlock()
if atomic.LoadInt32(&self.mining) == 1 {
- // Stop all agents.
for agent := range self.agents {
agent.Stop()
- // Remove CPU agents.
- if _, ok := agent.(*CpuAgent); ok {
- delete(self.agents, agent)
- }
}
}
-
atomic.StoreInt32(&self.mining, 0)
atomic.StoreInt32(&self.atWork, 0)
}
@@ -277,7 +273,7 @@ func (self *worker) wait() {
if self.fullValidation {
if _, err := self.chain.InsertChain(types.Blocks{block}); err != nil {
- log.Error(fmt.Sprint("mining err", err))
+ log.Error("Mined invalid block", "err", err)
continue
}
go self.mux.Post(core.NewMinedBlockEvent{Block: block})
@@ -285,19 +281,16 @@ func (self *worker) wait() {
work.state.Commit(self.config.IsEIP158(block.Number()))
parent := self.chain.GetBlock(block.ParentHash(), block.NumberU64()-1)
if parent == nil {
- log.Error(fmt.Sprint("Invalid block found during mining"))
+ log.Error("Invalid block found during mining")
continue
}
-
- auxValidator := self.eth.BlockChain().AuxValidator()
- if err := core.ValidateHeader(self.config, auxValidator, block.Header(), parent.Header(), true, false); err != nil && err != core.BlockFutureErr {
- log.Error(fmt.Sprint("Invalid header on mined block:", err))
+ if err := self.engine.VerifyHeader(self.chain, block.Header(), false); err != nil {
+ log.Error("Invalid header on mined block", "err", err)
continue
}
-
stat, err := self.chain.WriteBlock(block)
if err != nil {
- log.Error(fmt.Sprint("error writing block to chain", err))
+ log.Error("Failed writing block to chain", "err", err)
continue
}
@@ -333,7 +326,7 @@ func (self *worker) wait() {
self.mux.Post(logs)
}
if err := core.WriteBlockReceipts(self.chainDb, block.Hash(), block.NumberU64(), receipts); err != nil {
- log.Warn(fmt.Sprint("error writing block receipts:", err))
+ log.Warn("Failed writing block receipts", "err", err)
}
}(block, work.state.Logs(), work.receipts)
}
@@ -424,9 +417,9 @@ func (self *worker) commitNewWork() {
tstamp = parent.Time().Int64() + 1
}
// this will ensure we're not going off too far in the future
- if now := time.Now().Unix(); tstamp > now+4 {
+ if now := time.Now().Unix(); tstamp > now+1 {
wait := time.Duration(tstamp-now) * time.Second
- log.Info(fmt.Sprint("We are too far in the future. Waiting for", wait))
+ log.Info("Mining too far in the future", "wait", common.PrettyDuration(wait))
time.Sleep(wait)
}
@@ -434,13 +427,19 @@ func (self *worker) commitNewWork() {
header := &types.Header{
ParentHash: parent.Hash(),
Number: num.Add(num, common.Big1),
- Difficulty: core.CalcDifficulty(self.config, uint64(tstamp), parent.Time().Uint64(), parent.Number(), parent.Difficulty()),
GasLimit: core.CalcGasLimit(parent),
GasUsed: new(big.Int),
- Coinbase: self.coinbase,
Extra: self.extra,
Time: big.NewInt(tstamp),
}
+ // Only set the coinbase if we are mining (avoid spurious block rewards)
+ if atomic.LoadInt32(&self.mining) == 1 {
+ header.Coinbase = self.coinbase
+ }
+ if err := self.engine.Prepare(self.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 := self.config.DAOForkBlock; daoBlock != nil {
// Check whether the block is among the fork extra-override range
@@ -457,21 +456,19 @@ func (self *worker) commitNewWork() {
// Could potentially happen if starting to mine in an odd state.
err := self.makeCurrent(parent, header)
if err != nil {
- log.Info(fmt.Sprint("Could not create new env for mining, retrying on next block."))
+ log.Error("Failed to create mining context", "err", err)
return
}
// Create the current work task and check any fork transitions needed
work := self.current
if self.config.DAOForkSupport && self.config.DAOForkBlock != nil && self.config.DAOForkBlock.Cmp(header.Number) == 0 {
- core.ApplyDAOHardFork(work.state)
+ misc.ApplyDAOHardFork(work.state)
}
-
pending, err := self.eth.TxPool().Pending()
if err != nil {
- log.Error(fmt.Sprintf("Could not fetch pending transactions: %v", err))
+ log.Error("Failed to fetch pending transactions", "err", err)
return
}
-
txs := types.NewTransactionsByPriceAndNonce(pending)
work.commitTransactions(self.mux, txs, self.gasPrice, self.chain)
@@ -488,31 +485,26 @@ func (self *worker) commitNewWork() {
break
}
if err := self.commitUncle(work, uncle.Header()); err != nil {
- log.Trace(fmt.Sprintf("Bad uncle found and will be removed (%x)\n", hash[:4]))
+ log.Trace("Bad uncle found and will be removed", "hash", hash)
log.Trace(fmt.Sprint(uncle))
badUncles = append(badUncles, hash)
} else {
- log.Debug(fmt.Sprintf("committing %x as uncle\n", hash[:4]))
+ log.Debug("Committing new uncle to block", "hash", hash)
uncles = append(uncles, uncle.Header())
}
}
for _, hash := range badUncles {
delete(self.possibleUncles, hash)
}
-
- if atomic.LoadInt32(&self.mining) == 1 {
- // commit state root after all state transitions.
- core.AccumulateRewards(work.state, header, uncles)
- header.Root = work.state.IntermediateRoot(self.config.IsEIP158(header.Number))
+ // Create the new block to seal with the consensus engine
+ if work.Block, err = self.engine.Finalize(self.chain, header, work.state, work.txs, uncles, work.receipts); err != nil {
+ log.Error("Failed to finalize block for sealing", "err", err)
+ return
}
-
- // create the new block whose nonce will be mined.
- work.Block = types.NewBlock(header, work.txs, uncles, work.receipts)
-
// We only care about logging if we're actually mining.
if atomic.LoadInt32(&self.mining) == 1 {
- log.Info(fmt.Sprintf("commit new work on block %v with %d txs & %d uncles. Took %v\n", work.Block.Number(), work.tcount, len(uncles), time.Since(tstart)))
+ log.Info("Commit new mining work", "number", work.Block.Number(), "txs", work.tcount, "uncles", len(uncles), "elapsed", common.PrettyDuration(time.Since(tstart)))
self.unconfirmed.Shift(work.Block.NumberU64() - 1)
}
self.push(work)
@@ -521,13 +513,13 @@ func (self *worker) commitNewWork() {
func (self *worker) commitUncle(work *Work, uncle *types.Header) error {
hash := uncle.Hash()
if work.uncles.Has(hash) {
- return core.UncleError("Uncle not unique")
+ return core.UncleError("uncle not unique")
}
if !work.ancestors.Has(uncle.ParentHash) {
- return core.UncleError(fmt.Sprintf("Uncle's parent unknown (%x)", uncle.ParentHash[0:4]))
+ return core.UncleError(fmt.Sprintf("uncle's parent unknown (%x)", uncle.ParentHash[0:4]))
}
if work.family.Has(hash) {
- return core.UncleError(fmt.Sprintf("Uncle already in family (%x)", hash))
+ return core.UncleError(fmt.Sprintf("uncle already in family (%x)", hash))
}
work.uncles.Add(uncle.Hash())
return nil
@@ -552,7 +544,7 @@ func (env *Work) commitTransactions(mux *event.TypeMux, txs *types.TransactionsB
// 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() && !env.config.IsEIP155(env.header.Number) {
- log.Trace(fmt.Sprintf("Transaction (%x) is replay protected, but we haven't yet hardforked. Transaction will be ignored until we hardfork.\n", tx.Hash()))
+ log.Trace("Ignoring reply protected transaction", "hash", tx.Hash(), "eip155", env.config.EIP155Block)
txs.Pop()
continue
@@ -561,7 +553,7 @@ func (env *Work) commitTransactions(mux *event.TypeMux, txs *types.TransactionsB
// Ignore any transactions (and accounts subsequently) with low gas limits
if tx.GasPrice().Cmp(gasPrice) < 0 && !env.ownedAccounts.Has(from) {
// Pop the current low-priced transaction without shifting in the next from the account
- log.Info(fmt.Sprintf("Transaction (%x) below gas price (tx=%dwei ask=%dwei). All sequential txs from this address(%x) will be ignored\n", tx.Hash().Bytes()[:4], tx.GasPrice(), gasPrice, from[:4]))
+ log.Warn("Transaction below gas price", "sender", from, "hash", tx.Hash(), "have", tx.GasPrice(), "want", gasPrice)
env.lowGasTxs = append(env.lowGasTxs, tx)
txs.Pop()
@@ -575,12 +567,12 @@ func (env *Work) commitTransactions(mux *event.TypeMux, txs *types.TransactionsB
switch {
case core.IsGasLimitErr(err):
// Pop the current out-of-gas transaction without shifting in the next from the account
- log.Trace(fmt.Sprintf("Gas limit reached for (%x) in this block. Continue to try smaller txs\n", from[:4]))
+ log.Trace("Gas limit exceeded for current block", "sender", from)
txs.Pop()
case err != nil:
// Pop the current failed transaction without shifting in the next from the account
- log.Trace(fmt.Sprintf("Transaction (%x) failed, will be removed: %v\n", tx.Hash().Bytes()[:4], err))
+ log.Trace("Transaction failed, will be removed", "hash", tx.Hash(), "err", err)
env.failedTxs = append(env.failedTxs, tx)
txs.Pop()