support 0 gasprice (#7)

Co-authored-by: chengzhinei <[email protected]>

claimtxman/claimtxman.go

@@ -357,10 +357,13 @@ func (tm *ClaimTxManager) monitorTxs(ctx context.Context) error {
 			}
 
 			// GasPrice is set here to use always the proper and most accurate value right before sending it to L2
-			gasPrice, err := tm.l2Node.SuggestGasPrice(ctx)
-			if err != nil {
-				mTxLog.Errorf("failed to get suggested gasPrice. Error: %v", err)
-				continue
+			gasPrice := big.NewInt(0)
+			if !tm.cfg.FreeGas {
+				gasPrice, err = tm.l2Node.SuggestGasPrice(ctx)
+				if err != nil {
+					mTxLog.Errorf("failed to get suggested gasPrice. Error: %v", err)
+					continue
+				}
 			}
 			//Multiply gasPrice by 10 to increase the efficiency of the tx in the sequence
 			mTx.GasPrice = big.NewInt(0).Mul(gasPrice, big.NewInt(10)) //nolint:gomnd

claimtxman/config.go

@@ -15,4 +15,6 @@ type Config struct {
 	RetryInterval types.Duration `mapstructure:"RetryInterval"`
 	// RetryNumber is the number of retries before giving up
 	RetryNumber int `mapstructure:"RetryNumber"`
+	// FreeGas enabled whether gas price is 0
+	FreeGas bool `mapstructure:"FreeGas"`
 }

config/config.debug.toml

@@ -17,6 +17,7 @@ FrequencyToMonitorTxs = "1s"
 PrivateKey = {Path = "../test/test.keystore.sequencer", Password = "testonly"}
 RetryInterval = "1s"
 RetryNumber = 10
+FreeGas = true
 
 [Etherman]
 L1URL = "http://localhost:8545"

config/config.local.toml

@@ -17,6 +17,7 @@ FrequencyToMonitorTxs = "1s"
 PrivateKey = {Path = "/pk/keystore.claimtxmanager", Password = "testonly"}
 RetryInterval = "1s"
 RetryNumber = 10
+FreeGas = true
 
 [Etherman]
 L1URL = "http://zkevm-mock-l1-network:8545"