122 lines
3.8 KiB
Go
122 lines
3.8 KiB
Go
// VulcanizeDB
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// Copyright © 2020 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero 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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// This program 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 Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package auto
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import (
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"crypto/ecdsa"
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"errors"
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"fmt"
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"math/big"
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"sync/atomic"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/vulcanize/tx_spammer/pkg/shared"
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)
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// TxGenerator generates and signs txs
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type TxGenerator struct {
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signer types.Signer
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optimismConfig *OptimismConfig
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eip1559Config *EIP1559Config
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// keep track of account nonces locally so we aren't spamming to determine the nonce
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// this assumes these accounts are not sending txs outside this process
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nonces map[common.Address]*uint64
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}
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// NewTxGenerator creates a new tx generator
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func NewTxGenerator(config *Config) *TxGenerator {
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nonces := make(map[common.Address]*uint64)
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for _, addr := range config.SenderAddrs {
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startingNonce := uint64(0)
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nonces[addr] = &startingNonce
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}
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return &TxGenerator{
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signer: config.Signer,
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nonces: nonces,
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optimismConfig: config.OptimismConfig,
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eip1559Config: config.EIP1559Config,
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}
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}
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// GenParams params for GenerateTx method calls
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type GenParams struct {
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Sender common.Address
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SenderKey *ecdsa.PrivateKey
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To *common.Address
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Amount *big.Int
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GasLimit uint64
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GasPrice *big.Int
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Data []byte
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}
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// GenerateTxs loops and generates txs according the configuration passed in during construction
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func (tg TxGenerator) GenerateTxs(quitChan <-chan bool) (<-chan bool, <-chan []byte, <-chan error) {
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// TODO: this
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return nil, nil, nil
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}
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// GenerateTx generates tx from the provided params
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func (tg TxGenerator) GenerateTx(ty shared.TxType, params *GenParams) ([]byte, error) {
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tx := make([]byte, 0)
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switch ty {
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case shared.OptimismL2:
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return tg.genL2(params, tg.optimismConfig)
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case shared.Standard:
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return tg.gen(params)
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case shared.EIP1559:
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return tg.gen1559(params, tg.eip1559Config)
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default:
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return nil, fmt.Errorf("unsupported tx type: %s", ty.String())
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}
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return tx, nil
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}
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func (gen TxGenerator) genL2(params *GenParams, op *OptimismConfig) ([]byte, error) {
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nonce := atomic.AddUint64(gen.nonces[params.Sender], 1)
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tx := new(types.Transaction)
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if params.To == nil {
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tx = types.NewContractCreation(nonce, params.Amount, params.GasLimit, params.GasPrice, params.Data, op.L1SenderAddr, op.L1RollupTxId, op.QueueOrigin)
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if err := shared.WriteContractAddr(shared.DefaultDeploymentAddrLogPathPrefix, params.Sender, nonce); err != nil {
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return nil, err
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}
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} else {
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tx = types.NewTransaction(nonce, *params.To, params.Amount, params.GasLimit, params.GasPrice, params.Data, op.L1SenderAddr, op.L1RollupTxId, op.QueueOrigin, op.SigHashType)
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}
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signedTx, err := types.SignTx(tx, gen.signer, params.SenderKey)
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if err != nil {
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return nil, err
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}
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txRlp, err := rlp.EncodeToBytes(signedTx)
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if err != nil {
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return nil, err
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}
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return txRlp, nil
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}
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func (gen TxGenerator) gen(params *GenParams) ([]byte, error) {
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// TODO: support standard geth
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return nil, errors.New("L1 support not yet available")
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}
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func (gen TxGenerator) gen1559(params *GenParams, eip1559Config *EIP1559Config) ([]byte, error) {
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// TODO: support EIP1559
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return nil, errors.New("1559 support not yet available")
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}
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