pkg/auto/sender.go

@@ -0,0 +1,56 @@
+// VulcanizeDB
+// Copyright © 2020 Vulcanize
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package auto
+
+import (
+	"github.com/ethereum/go-ethereum/rpc"
+	"github.com/vulcanize/tx_spammer/pkg/shared"
+)
+
+// EthSender sends eth value transfer txs
+type EthSender struct {
+	client *rpc.Client
+}
+
+// NewEthSender returns a new EthSender
+func NewEthSender(config *Config) *EthSender {
+	return &EthSender{
+		client: config.Client,
+	}
+}
+
+// Send awaits txs off the provided work queue and sends them
+func (s *EthSender) Send(quitChan <-chan bool, txRlpChan <-chan []byte) (<-chan bool, <-chan error) {
+	// done channel to signal quit signal has been received (any ongoing jobs were finished)
+	doneChan := make(chan bool)
+	// err channel returned to calling context
+	errChan := make(chan error)
+	go func() {
+		for {
+			select {
+			case tx := <- txRlpChan:
+				if err := shared.SendRawTransaction(s.client, tx); err != nil {
+					errChan <- err
+				}
+			case <-quitChan:
+				close(doneChan)
+				return
+			}
+		}
+	}()
+	return doneChan, errChan
+}