Feature: add gas amount estimation feature to zcnbridge

go.mod

@@ -1,8 +1,6 @@
 module github.com/0chain/gosdk
 
-go 1.21
-
-toolchain go1.21.5
+go 1.18
 
 require (
 	github.com/0chain/common v0.0.6-0.20230127095721-8df4d1d72565

go.sum

@@ -99,7 +99,6 @@ github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46f
 github.com/c-bata/go-prompt v0.2.2/go.mod h1:VzqtzE2ksDBcdln8G7mk2RX9QyGjH+OVqOCSiVIqS34=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/cp v0.1.0 h1:SE+dxFebS7Iik5LK0tsi1k9ZCxEaFX4AjQmoyA+1dJk=
-github.com/cespare/cp v0.1.0/go.mod h1:SOGHArjBr4JWaSDEVpWpo/hNg6RoKrls6Oh40hiwW+s=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
@@ -158,15 +157,13 @@ github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7
 github.com/ethereum/go-ethereum v1.10.26 h1:i/7d9RBBwiXCEuyduBQzJw/mKmnvzsN14jqBmytw72s=
 github.com/ethereum/go-ethereum v1.10.26/go.mod h1:EYFyF19u3ezGLD4RqOkLq+ZCXzYbLoNDdZlMt7kyKFg=
 github.com/fatih/color v1.13.0 h1:8LOYc1KYPPmyKMuN8QV2DNRWNbLo6LZ0iLs8+mlH53w=
-github.com/fatih/color v1.13.0/go.mod h1:kLAiJbzzSOZDVNGyDpeOxJ47H46qBXwg5ILebYFFOfk=
 github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/felixge/httpsnoop v1.0.3 h1:s/nj+GCswXYzN5v2DpNMuMQYe+0DDwt5WVCU6CWBdXk=
 github.com/felixge/httpsnoop v1.0.3/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5 h1:FtmdgXiUlNeRsoNMFlKLDt+S+6hbjVMEW6RGQ7aUf7c=
 github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5/go.mod h1:VvhXpOYNQvB+uIk2RvXzuaQtkQJzzIx6lSBe1xv7hi0=
 github.com/fogleman/gg v1.2.1-0.20190220221249-0403632d5b90/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k=
 github.com/frankban/quicktest v1.14.3 h1:FJKSZTDHjyhriyC81FLQ0LY93eSai0ZyR/ZIkd3ZUKE=
-github.com/frankban/quicktest v1.14.3/go.mod h1:mgiwOwqx65TmIk1wJ6Q7wvnVMocbUorkibMOrVTHZps=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/fsnotify/fsnotify v1.6.0 h1:n+5WquG0fcWoWp6xPWfHdbskMCQaFnG6PfBrh1Ky4HY=
@@ -254,7 +251,6 @@ github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
-github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
 github.com/google/martian/v3 v3.0.0/go.mod h1:y5Zk1BBys9G+gd6Jrk0W3cC1+ELVxBWuIGO+w/tUAp0=
 github.com/google/martian/v3 v3.1.0/go.mod h1:y5Zk1BBys9G+gd6Jrk0W3cC1+ELVxBWuIGO+w/tUAp0=
@@ -291,7 +287,6 @@ github.com/hashicorp/go-cleanhttp v0.5.2 h1:035FKYIWjmULyFRBKPs8TBQoi0x6d9G4xc9n
 github.com/hashicorp/go-cleanhttp v0.5.2/go.mod h1:kO/YDlP8L1346E6Sodw+PrpBSV4/SoxCXGY6BqNFT48=
 github.com/hashicorp/go-hclog v0.9.2/go.mod h1:5CU+agLiy3J7N7QjHK5d05KxGsuXiQLrjA0H7acj2lQ=
 github.com/hashicorp/go-hclog v1.2.0 h1:La19f8d7WIlm4ogzNHB0JGqs5AUDAZ2UfCY4sJXcJdM=
-github.com/hashicorp/go-hclog v1.2.0/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
 github.com/hashicorp/go-retryablehttp v0.7.2 h1:AcYqCvkpalPnPF2pn0KamgwamS42TqUDDYFRKq/RAd0=
 github.com/hashicorp/go-retryablehttp v0.7.2/go.mod h1:Jy/gPYAdjqffZ/yFGCFV2doI5wjtH1ewM9u8iYVjtX8=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
@@ -577,7 +572,6 @@ go.uber.org/atomic v1.10.0 h1:9qC72Qh0+3MqyJbAn8YU5xVq1frD8bn3JtD2oXtafVQ=
 go.uber.org/atomic v1.10.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
 go.uber.org/goleak v1.1.10/go.mod h1:8a7PlsEVH3e/a/GLqe5IIrQx6GzcnRmZEufDUTk4A7A=
 go.uber.org/goleak v1.1.11 h1:wy28qYRKZgnJTxGxvye5/wgWr1EKjmUDGYox5mGlRlI=
-go.uber.org/goleak v1.1.11/go.mod h1:cwTWslyiVhfpKIDGSZEM2HlOvcqm+tG4zioyIeLoqMQ=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
 go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
 go.uber.org/multierr v1.9.0 h1:7fIwc/ZtS0q++VgcfqFDxSBZVv/Xo49/SYnDFupUwlI=
@@ -830,7 +824,6 @@ golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 h1:H2TDz8ibqkAF6YGhCdN3jS9O0/s90v0rJh3X/OLHEUk=
-golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2/go.mod h1:K8+ghG5WaK9qNqU5K3HdILfMLy1f3aNYFI/wnl100a8=
 gonum.org/v1/gonum v0.0.0-20180816165407-929014505bf4/go.mod h1:Y+Yx5eoAFn32cQvJDxZx5Dpnq+c3wtXuadVZAcxbbBo=
 gonum.org/v1/gonum v0.0.0-20181121035319-3f7ecaa7e8ca/go.mod h1:Y+Yx5eoAFn32cQvJDxZx5Dpnq+c3wtXuadVZAcxbbBo=
 gonum.org/v1/gonum v0.6.0/go.mod h1:9mxDZsDKxgMAuccQkewq682L+0eCu4dCN2yonUJTCLU=

wasmsdk/bridge.go

@@ -173,6 +173,22 @@ func getNotProcessedZCNBurnTickets() string {
 	return string(result)
 }
 
+// estimateGasAmount performs gas amount estimation for the given transaction.
+func estimateGasAmount(from, to string, value int64) string { // nolint:golint,unused
+	estimateGasAmountResponse, err := bridge.EstimateGasAmount(context.Background(), from, to, value)
+	if err != nil {
+		return errors.Wrap("estimateGasAmount", "failed to estimate gas price", err).Error()
+	}
+
+	var result []byte
+	result, err = json.Marshal(estimateGasAmountResponse)
+	if err != nil {
+		return errors.Wrap("estimateGasAmount", "failed to marshal gas amount estimation result", err).Error()
+	}
+
+	return string(result)
+}
+
 // estimateGasPrice performs gas estimation for the given transaction using Alchemy enhanced API returning
 // approximate final gas fee.
 func estimateGasPrice(from, to string, value int64) string { // nolint:golint,unused

wasmsdk/proxy.go

@@ -236,6 +236,7 @@ func main() {
 				"getMintWZCNPayload":            getMintWZCNPayload,
 				"getNotProcessedWZCNBurnEvents": getNotProcessedWZCNBurnEvents,
 				"getNotProcessedZCNBurnTickets": getNotProcessedZCNBurnTickets,
+				"estimateGasAmount":             estimateGasAmount,
 				"estimateGasPrice":              estimateGasPrice,
 
 				//zcn

zcnbridge/bridge.go

@@ -998,66 +998,104 @@ func (b *BridgeClient) prepareBridge(ctx context.Context, ethereumAddress, metho
 	return bridgeInstance, transactOpts, nil
 }
 
-// isEstimateGasPriceAvailable checks if currently selected ethereum node url can be used for gas estimation.
-func (b *BridgeClient) isEstimateGasPriceAvailable() bool {
-	return strings.Contains(b.EthereumNodeURL, "eth-mainnet.g.alchemy.com")
+// getProviderType validates the provider url and exposes pre-defined type definition.
+func (b *BridgeClient) getProviderType() int {
+	if strings.Contains(b.EthereumNodeURL, "g.alchemy.com") {
+		return AlchemyProvider
+	} else if strings.Contains(b.EthereumNodeURL, "rpc.tenderly.co") {
+		return TenderlyProvider
+	} else {
+		return UnknownProvider
+	}
 }
 
-// EstimateGasPrice performs gas estimation for the given transaction using Alchemy enhanced API returning
-// approximate final gas fee.
-func (b *BridgeClient) EstimateGasPrice(ctx context.Context, from, to string, value int64) (*GasPriceEstimationResult, error) {
-	if !b.isEstimateGasPriceAvailable() {
-		return nil, errors.New("used json-rpc does not allow to estimate gas price")
-	}
+// estimateTenderlyGasAmount performs gas amount estimation for the given transaction using Tenderly provider.
+func (b *BridgeClient) estimateTenderlyGasAmount(ctx context.Context, from, to string, value int64) (float64, error) {
+	return 8000000, nil
+}
 
+// estimateAlchemyGasAmount performs gas amount estimation for the given transaction using Alchemy provider
+func (b *BridgeClient) estimateAlchemyGasAmount(ctx context.Context, from, to string, value int64) (float64, error) {
 	client := jsonrpc.NewClient(b.EthereumNodeURL)
 
 	valueHex := ConvertIntToHex(value)
 
-	resp, err := client.Call(ctx, "eth_estimateGas", &GasEstimationRequest{
+	resp, err := client.Call(ctx, "eth_estimateGas", &AlchemyGasEstimationRequest{
 		From: from, To: to, Value: valueHex})
 	if err != nil {
-		return nil, errors.Wrap(err, "gas price estimation failed")
+		return 0, errors.Wrap(err, "gas price estimation failed")
 	}
 
 	if resp.Error != nil {
-		return nil, errors.Wrap(errors.New(resp.Error.Error()), "gas price estimation failed")
+		return 0, errors.Wrap(errors.New(resp.Error.Error()), "gas price estimation failed")
 	}
 
 	gasAmountRaw, ok := resp.Result.(string)
 	if !ok {
-		return nil, errors.New("failed to parse gas amount")
+		return 0, errors.New("failed to parse gas amount")
 	}
 
 	gasAmountInt := new(big.Float)
 	gasAmountInt.SetString(gasAmountRaw)
 
 	gasAmountFloat, _ := gasAmountInt.Float64()
 
-	fmt.Println(gasAmountFloat)
+	return gasAmountFloat, nil
+}
+
+// EstimateGasAmount performs gas amount estimation for the given transaction.
+func (b *BridgeClient) EstimateGasAmount(ctx context.Context, from, to string, value int64) (float64, error) {
+	switch b.getProviderType() {
+	case AlchemyProvider:
+		return b.estimateAlchemyGasAmount(ctx, from, to, value)
+	case TenderlyProvider:
+		return b.estimateTenderlyGasAmount(ctx, from, to, value)
+	}
+
+	return 0, errors.New("used json-rpc does not allow to estimate gas amount")
+}
 
-	resp, err = client.Call(ctx, "eth_gasPrice")
+// estimateTenderlyGasPrice performs gas estimation for the given transaction using Tenderly API.
+func (b *BridgeClient) estimateTenderlyGasPrice(ctx context.Context, from, to string, value int64) (float64, error) {
+	return 0, nil
+}
+
+// estimateAlchemyGasPrice performs gas estimation for the given transaction using Alchemy enhanced API returning
+// approximate final gas fee.
+func (b *BridgeClient) estimateAlchemyGasPrice(ctx context.Context, from, to string, value int64) (float64, error) {
+	client := jsonrpc.NewClient(b.EthereumNodeURL)
+
+	resp, err := client.Call(ctx, "eth_gasPrice")
 	if err != nil {
-		return nil, errors.Wrap(err, "gas price estimation failed")
+		return 0, errors.Wrap(err, "gas price estimation failed")
 	}
 
 	if resp.Error != nil {
-		return nil, errors.Wrap(errors.New(resp.Error.Error()), "gas price estimation failed")
+		return 0, errors.Wrap(errors.New(resp.Error.Error()), "gas price estimation failed")
 	}
 
-	var gasPriceRaw string
-	gasPriceRaw, ok = resp.Result.(string)
+	gasPriceRaw, ok := resp.Result.(string)
 	if !ok {
-		return nil, errors.New("failed to parse gas price")
+		return 0, errors.New("failed to parse gas price")
 	}
 
 	gasPriceInt := new(big.Float)
 	gasPriceInt.SetString(gasPriceRaw)
 
 	gasPriceFloat, _ := gasPriceInt.Float64()
 
-	fmt.Println(gasPriceFloat)
+	return gasPriceFloat, nil
+}
+
+// EstimateGasPrice performs gas estimation for the given transaction using Alchemy enhanced API returning
+// approximate final gas fee.
+func (b *BridgeClient) EstimateGasPrice(ctx context.Context, from, to string, value int64) (float64, error) {
+	switch b.getProviderType() {
+	case AlchemyProvider:
+		return b.estimateAlchemyGasPrice(ctx, from, to, value)
+	case TenderlyProvider:
+		return b.estimateTenderlyGasPrice(ctx, from, to, value)
+	}
 
-	return &GasPriceEstimationResult{
-		Value: gasPriceFloat * gasAmountFloat}, nil
+	return 0, errors.New("used json-rpc does not allow to estimate gas price")
 }

zcnbridge/bridge_helper.go

@@ -10,18 +10,13 @@ import (
 	"github.com/pkg/errors"
 )
 
-// GasEstimationRequest describes request used for Alchemy enhanced JSON-RPC API.
-type GasEstimationRequest struct {
+// AlchemyGasEstimationRequest describes request used for Alchemy enhanced JSON-RPC API.
+type AlchemyGasEstimationRequest struct {
 	From  string `json:"from"`
 	To    string `json:"to"`
 	Value string `json:"value"`
 }
 
-// GasPriceEstimationResult represents result of the gas price estimation operation execution.
-type GasPriceEstimationResult struct {
-	Value float64 `json:"value"`
-}
-
 // BancorTokenDetails describes Bancor ZCN zcntoken pool details
 type BancorTokenDetails struct {
 	Data struct {

zcnbridge/bridge_test.go

@@ -41,9 +41,10 @@ import (
 const (
 	ethereumAddress = "0xD8c9156e782C68EE671C09b6b92de76C97948432"
 
-	alchemyEthereumNodeURL = "https://eth-mainnet.g.alchemy.com/v2/9VanLUbRE0pLmDHwCHGJlhs9GHosrfD9"
-	infuraEthereumNodeURL  = "https://mainnet.infura.io/v3/7238211010344719ad14a89db874158c"
-	value                  = 1e+10
+	alchemyEthereumNodeURL  = "https://eth-mainnet.g.alchemy.com/v2/9VanLUbRE0pLmDHwCHGJlhs9GHosrfD9"
+	tenderlyEthereumNodeURL = "https://rpc.tenderly.co/fork/835ecb4e-1f60-4129-adc2-b0c741193839"
+	infuraEthereumNodeURL   = "https://mainnet.infura.io/v3/7238211010344719ad14a89db874158c"
+	value                   = 1e+10
 
 	password = "02289b9"
 
@@ -628,13 +629,20 @@ func Test_ZCNBridge(t *testing.T) {
 		))
 	})
 
-	t.Run("should check if gas price estimation works with correct ethereum node url", func(t *testing.T) {
+	t.Run("should check if gas price estimation works with correct alchemy ethereum node url", func(t *testing.T) {
 		bridgeClient = getBridgeClient(bancorMockServerURL, alchemyEthereumNodeURL, ethereumClient, transactionProvider, keyStore)
 
 		_, err := bridgeClient.EstimateGasPrice(context.Background(), tokenAddress, bridgeAddress, value)
 		require.Contains(t, err.Error(), "Must be authenticated!")
 	})
 
+	t.Run("should check if gas price estimation works with correct tenderly ethereum node url", func(t *testing.T) {
+		bridgeClient = getBridgeClient(bancorMockServerURL, tenderlyEthereumNodeURL, ethereumClient, transactionProvider, keyStore)
+
+		_, err := bridgeClient.EstimateGasPrice(context.Background(), tokenAddress, bridgeAddress, value)
+		require.NoError(t, err)
+	})
+
 	t.Run("should check if gas price estimation works with incorrect ethereum node url", func(t *testing.T) {
 		bridgeClient = getBridgeClient(bancorMockServerURL, infuraEthereumNodeURL, ethereumClient, transactionProvider, keyStore)
 

zcnbridge/config.go

@@ -15,6 +15,12 @@ import (
 	"github.com/spf13/viper"
 )
 
+const (
+	TenderlyProvider = iota
+	AlchemyProvider
+	UnknownProvider
+)
+
 const (
 	ZChainsClientConfigName  = "config.yaml"
 	ZChainWalletConfigName   = "wallet.json"