/
framework.go
250 lines (213 loc) · 5.25 KB
/
framework.go
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package framework
import (
"context"
"crypto/ecdsa"
"encoding/hex"
"encoding/json"
"fmt"
"math/big"
"os"
"path/filepath"
"runtime"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/rpc"
"github.com/ethereum/go-ethereum/suave/sdk"
)
type Artifact struct {
Abi *abi.ABI
// Code is the code to deploy the contract
Code []byte
}
func ReadArtifact(path string) (*Artifact, error) {
_, filename, _, ok := runtime.Caller(0)
if !ok {
return nil, fmt.Errorf("unable to get the current filename")
}
dirname := filepath.Dir(filename)
data, err := os.ReadFile(filepath.Join(dirname, "../out", path))
if err != nil {
return nil, err
}
var artifact struct {
Abi *abi.ABI `json:"abi"`
Bytecode struct {
Object string `json:"object"`
} `json:"bytecode"`
}
if err := json.Unmarshal(data, &artifact); err != nil {
return nil, err
}
code, err := hex.DecodeString(artifact.Bytecode.Object[2:])
if err != nil {
return nil, err
}
art := &Artifact{
Abi: artifact.Abi,
Code: code,
}
return art, nil
}
type PrivKey struct {
Priv *ecdsa.PrivateKey
}
func (p *PrivKey) Address() common.Address {
return crypto.PubkeyToAddress(p.Priv.PublicKey)
}
func (p *PrivKey) MarshalPrivKey() []byte {
return crypto.FromECDSA(p.Priv)
}
func NewPrivKeyFromHex(hex string) *PrivKey {
key, err := crypto.HexToECDSA(hex)
if err != nil {
panic(fmt.Sprintf("failed to parse private key: %v", err))
}
return &PrivKey{Priv: key}
}
func GeneratePrivKey() *PrivKey {
key, err := crypto.GenerateKey()
if err != nil {
panic(fmt.Sprintf("failed to generate private key: %v", err))
}
return &PrivKey{Priv: key}
}
type Contract struct {
*sdk.Contract
addr common.Address
abi *abi.ABI
fr *Framework
}
func (c *Contract) Call(methodName string) []interface{} {
input, err := c.abi.Pack(methodName)
if err != nil {
panic(err)
}
callMsg := ethereum.CallMsg{
To: &c.addr,
Data: input,
}
rpcClient := ethclient.NewClient(c.fr.rpc)
output, err := rpcClient.CallContract(context.Background(), callMsg, nil)
if err != nil {
panic(err)
}
results, err := c.abi.Methods[methodName].Outputs.Unpack(output)
if err != nil {
panic(err)
}
return results
}
func (c *Contract) SendTransaction(method string, args []interface{}, confidentialBytes []byte) *types.Receipt {
txnResult, err := c.Contract.SendTransaction(method, args, confidentialBytes)
if err != nil {
panic(err)
}
receipt, err := txnResult.Wait()
if err != nil {
panic(err)
}
if receipt.Status == 0 {
panic("bad")
}
return receipt
}
type Framework struct {
config *Config
rpc *rpc.Client
clt *sdk.Client
}
type Config struct {
KettleRPC string
KettleAddr common.Address
FundedAccount *PrivKey
}
func DefaultConfig() *Config {
return &Config{
KettleRPC: "http://localhost:8545",
KettleAddr: common.HexToAddress("b5feafbdd752ad52afb7e1bd2e40432a485bbb7f"),
// This account is funded in both devnev networks
// address: 0xBE69d72ca5f88aCba033a063dF5DBe43a4148De0
FundedAccount: NewPrivKeyFromHex("91ab9a7e53c220e6210460b65a7a3bb2ca181412a8a7b43ff336b3df1737ce12"),
}
}
func New() *Framework {
config := DefaultConfig()
rpc, _ := rpc.Dial(config.KettleRPC)
clt := sdk.NewClient(rpc, config.FundedAccount.Priv, config.KettleAddr)
return &Framework{
config: DefaultConfig(),
rpc: rpc,
clt: clt,
}
}
func (f *Framework) DeployContract(path string) *Contract {
artifact, err := ReadArtifact(path)
if err != nil {
panic(err)
}
// deploy contract
txnResult, err := sdk.DeployContract(artifact.Code, f.clt)
if err != nil {
panic(err)
}
receipt, err := txnResult.Wait()
if err != nil {
panic(err)
}
if receipt.Status == 0 {
panic(fmt.Errorf("transaction failed"))
}
contract := sdk.GetContract(receipt.ContractAddress, artifact.Abi, f.clt)
return &Contract{addr: receipt.ContractAddress, fr: f, abi: artifact.Abi, Contract: contract}
}
func (c *Contract) Ref(acct *PrivKey) *Contract {
cc := &Contract{
addr: c.addr,
abi: c.abi,
fr: c.fr,
Contract: sdk.GetContract(c.addr, c.abi, c.fr.NewClient(acct)),
}
return cc
}
func (f *Framework) NewClient(acct *PrivKey) *sdk.Client {
cc := DefaultConfig()
rpc, _ := rpc.Dial(cc.KettleRPC)
return sdk.NewClient(rpc, acct.Priv, cc.KettleAddr)
}
func (f *Framework) SignTx(priv *PrivKey, tx *types.LegacyTx) (*types.Transaction, error) {
rpc, _ := rpc.Dial("http://localhost:8545")
cltAcct1 := sdk.NewClient(rpc, priv.Priv, common.Address{})
signedTxn, err := cltAcct1.SignTxn(tx)
if err != nil {
return nil, err
}
return signedTxn, nil
}
var errFundAccount = fmt.Errorf("failed to fund account")
func (f *Framework) FundAccount(to common.Address, value *big.Int) error {
txn := &types.LegacyTx{
Value: value,
To: &to,
}
result, err := f.clt.SendTransaction(txn)
if err != nil {
return err
}
_, err = result.Wait()
if err != nil {
return err
}
// check balance
balance, err := f.clt.RPC().BalanceAt(context.Background(), to, nil)
if err != nil {
return err
}
if balance.Cmp(value) != 0 {
return errFundAccount
}
return nil
}