265 lines
7.8 KiB
Go
265 lines
7.8 KiB
Go
// Copyright 2021 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// This file contains a miner stress test for eip 1559.
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package main
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import (
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"crypto/ecdsa"
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"math/big"
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"math/rand"
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"os"
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"os/signal"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/fdlimit"
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"github.com/ethereum/go-ethereum/consensus/ethash"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/txpool"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/eth"
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"github.com/ethereum/go-ethereum/eth/downloader"
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"github.com/ethereum/go-ethereum/eth/ethconfig"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/miner"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/p2p/enode"
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"github.com/ethereum/go-ethereum/params"
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)
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var (
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londonBlock = big.NewInt(30) // Predefined london fork block for activating eip 1559.
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)
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func main() {
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log.Root().SetHandler(log.LvlFilterHandler(log.LvlInfo, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
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fdlimit.Raise(2048)
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// Generate a batch of accounts to seal and fund with
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faucets := make([]*ecdsa.PrivateKey, 128)
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for i := 0; i < len(faucets); i++ {
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faucets[i], _ = crypto.GenerateKey()
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}
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// Pre-generate the ethash mining DAG so we don't race
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ethash.MakeDataset(1, ethconfig.Defaults.Ethash.DatasetDir)
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// Create an Ethash network based off of the Ropsten config
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genesis := makeGenesis(faucets)
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// Handle interrupts.
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interruptCh := make(chan os.Signal, 5)
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signal.Notify(interruptCh, os.Interrupt)
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var (
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stacks []*node.Node
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nodes []*eth.Ethereum
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enodes []*enode.Node
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)
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for i := 0; i < 4; i++ {
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// Start the node and wait until it's up
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stack, ethBackend, err := makeMiner(genesis)
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if err != nil {
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panic(err)
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}
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defer stack.Close()
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for stack.Server().NodeInfo().Ports.Listener == 0 {
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time.Sleep(250 * time.Millisecond)
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}
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// Connect the node to all the previous ones
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for _, n := range enodes {
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stack.Server().AddPeer(n)
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}
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// Start tracking the node and its enode
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nodes = append(nodes, ethBackend)
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enodes = append(enodes, stack.Server().Self())
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}
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// Iterate over all the nodes and start mining
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time.Sleep(3 * time.Second)
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for _, node := range nodes {
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if err := node.StartMining(1); err != nil {
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panic(err)
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}
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}
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time.Sleep(3 * time.Second)
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// Start injecting transactions from the faucets like crazy
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var (
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nonces = make([]uint64, len(faucets))
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// The signer activates the 1559 features even before the fork,
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// so the new 1559 txs can be created with this signer.
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signer = types.LatestSignerForChainID(genesis.Config.ChainID)
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)
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for {
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// Stop when interrupted.
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select {
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case <-interruptCh:
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for _, node := range stacks {
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node.Close()
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}
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return
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default:
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}
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// Pick a random mining node
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index := rand.Intn(len(faucets))
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backend := nodes[index%len(nodes)]
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headHeader := backend.BlockChain().CurrentHeader()
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baseFee := headHeader.BaseFee
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// Create a self transaction and inject into the pool. The legacy
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// and 1559 transactions can all be created by random even if the
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// fork is not happened.
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tx := makeTransaction(nonces[index], faucets[index], signer, baseFee)
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if err := backend.TxPool().AddLocal(tx); err != nil {
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continue
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}
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nonces[index]++
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// Wait if we're too saturated
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if pend, _ := backend.TxPool().Stats(); pend > 4192 {
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time.Sleep(100 * time.Millisecond)
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}
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// Wait if the basefee is raised too fast
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if baseFee != nil && baseFee.Cmp(new(big.Int).Mul(big.NewInt(100), big.NewInt(params.GWei))) > 0 {
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time.Sleep(500 * time.Millisecond)
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}
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}
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}
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func makeTransaction(nonce uint64, privKey *ecdsa.PrivateKey, signer types.Signer, baseFee *big.Int) *types.Transaction {
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// Generate legacy transaction
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if rand.Intn(2) == 0 {
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tx, err := types.SignTx(types.NewTransaction(nonce, crypto.PubkeyToAddress(privKey.PublicKey), new(big.Int), 21000, big.NewInt(100000000000+rand.Int63n(65536)), nil), signer, privKey)
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if err != nil {
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panic(err)
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}
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return tx
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}
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// Generate eip 1559 transaction
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recipient := crypto.PubkeyToAddress(privKey.PublicKey)
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// Feecap and feetip are limited to 32 bytes. Offer a sightly
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// larger buffer for creating both valid and invalid transactions.
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var buf = make([]byte, 32+5)
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rand.Read(buf)
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gasTipCap := new(big.Int).SetBytes(buf)
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// If the given base fee is nil(the 1559 is still not available),
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// generate a fake base fee in order to create 1559 tx forcibly.
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if baseFee == nil {
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baseFee = new(big.Int).SetInt64(int64(rand.Int31()))
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}
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// Generate the feecap, 75% valid feecap and 25% unguaranteed.
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var gasFeeCap *big.Int
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if rand.Intn(4) == 0 {
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rand.Read(buf)
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gasFeeCap = new(big.Int).SetBytes(buf)
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} else {
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gasFeeCap = new(big.Int).Add(baseFee, gasTipCap)
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}
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return types.MustSignNewTx(privKey, signer, &types.DynamicFeeTx{
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ChainID: signer.ChainID(),
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Nonce: nonce,
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GasTipCap: gasTipCap,
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GasFeeCap: gasFeeCap,
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Gas: 21000,
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To: &recipient,
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Value: big.NewInt(100),
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Data: nil,
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AccessList: nil,
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})
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}
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// makeGenesis creates a custom Ethash genesis block based on some pre-defined
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// faucet accounts.
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func makeGenesis(faucets []*ecdsa.PrivateKey) *core.Genesis {
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genesis := core.DefaultRopstenGenesisBlock()
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genesis.Config = params.AllEthashProtocolChanges
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genesis.Config.LondonBlock = londonBlock
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genesis.Difficulty = params.MinimumDifficulty
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// Small gaslimit for easier basefee moving testing.
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genesis.GasLimit = 8_000_000
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genesis.Config.ChainID = big.NewInt(18)
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genesis.Config.EIP150Hash = common.Hash{}
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genesis.Alloc = core.GenesisAlloc{}
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for _, faucet := range faucets {
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genesis.Alloc[crypto.PubkeyToAddress(faucet.PublicKey)] = core.GenesisAccount{
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Balance: new(big.Int).Exp(big.NewInt(2), big.NewInt(128), nil),
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}
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}
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if londonBlock.Sign() == 0 {
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log.Info("Enabled the eip 1559 by default")
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} else {
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log.Info("Registered the london fork", "number", londonBlock)
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}
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return genesis
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}
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func makeMiner(genesis *core.Genesis) (*node.Node, *eth.Ethereum, error) {
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// Define the basic configurations for the Ethereum node
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datadir, _ := os.MkdirTemp("", "")
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config := &node.Config{
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Name: "geth",
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Version: params.Version,
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DataDir: datadir,
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P2P: p2p.Config{
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ListenAddr: "0.0.0.0:0",
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NoDiscovery: true,
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MaxPeers: 25,
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},
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UseLightweightKDF: true,
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}
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// Create the node and configure a full Ethereum node on it
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stack, err := node.New(config)
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if err != nil {
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return nil, nil, err
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}
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ethBackend, err := eth.New(stack, ðconfig.Config{
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Genesis: genesis,
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NetworkId: genesis.Config.ChainID.Uint64(),
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SyncMode: downloader.FullSync,
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DatabaseCache: 256,
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DatabaseHandles: 256,
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TxPool: txpool.DefaultConfig,
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GPO: ethconfig.Defaults.GPO,
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Ethash: ethconfig.Defaults.Ethash,
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Miner: miner.Config{
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Etherbase: common.Address{1},
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GasCeil: genesis.GasLimit * 11 / 10,
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GasPrice: big.NewInt(1),
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Recommit: time.Second,
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},
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})
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if err != nil {
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return nil, nil, err
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}
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err = stack.Start()
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return stack, ethBackend, err
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}
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