96 lines
2.7 KiB
Go
96 lines
2.7 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 tx_spammer
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import (
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"context"
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"fmt"
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"sync"
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"time"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/sirupsen/logrus"
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)
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// TxSender type for
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type TxSender struct {
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TxGen *TxGenerator
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TxParams []TxParams
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}
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// NewTxSender returns a new tx sender
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func NewTxSender(params []TxParams) *TxSender {
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return &TxSender{
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TxGen: NewTxGenerator(params),
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TxParams: params,
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}
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}
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func (s *TxSender) Send(quitChan <-chan bool) (<-chan bool, <-chan error) {
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// done channel to signal completion of all jobs
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doneChan := make(chan bool)
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// err channel returned to calling context
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errChan := make(chan error)
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// for each tx param set, spin up a goroutine to generate and send the tx at the specified delay and frequency
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wg := new(sync.WaitGroup)
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for _, txParams := range s.TxParams {
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wg.Add(1)
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go func(p TxParams) {
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defer wg.Done()
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// send the first tx after the delay
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timer := time.NewTimer(p.Delay)
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<-timer.C
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if err := s.genAndSend(p); err != nil {
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errChan <- fmt.Errorf("tx %s initial genAndSend error: %v", p.Name, err)
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return
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}
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// send any remaining ones at the provided frequency, also check for quit signal
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ticker := time.NewTicker(p.Frequency)
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for i := uint64(1); i < p.TotalNumber; i++ {
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select {
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case <-ticker.C:
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if err := s.genAndSend(p); err != nil {
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errChan <- fmt.Errorf("tx %s number %d genAndSend error: %v", p.Name, i, err)
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return
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}
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case <-quitChan:
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return
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}
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}
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}(txParams)
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}
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go func() {
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wg.Wait()
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close(doneChan)
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}()
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return doneChan, errChan
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}
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func (s *TxSender) genAndSend(p TxParams) error {
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tx, err := s.TxGen.GenerateTx(p)
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if err != nil {
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return err
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}
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return sendRawTransaction(p.Client, tx, p.Name)
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}
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func sendRawTransaction(rpcClient *rpc.Client, txRlp []byte, name string) error {
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logrus.Infof("sending tx %s", name)
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return rpcClient.CallContext(context.Background(), nil, "eth_sendRawTransaction", hexutil.Encode(txRlp))
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}
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