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chain implementation working for basic transactions

feature_chain_module
imw 5 years ago
parent
commit
e6a2926a37
3 changed files with 112 additions and 38 deletions
  1. +79
    -38
      chain/chain.go
  2. +32
    -0
      cmd/relay/genesis.json
  3. +1
    -0
      cmd/relay/relay.go

+ 79
- 38
chain/chain.go

@ -3,21 +3,22 @@ package chain
import (
"context"
"fmt"
"log"
"io/ioutil"
"math/big"
"os"
"time"
"github.com/ethereum/go-ethereum/accounts/keystore"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/console"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p/enode"
// "github.com/ethereum/go-ethereum/accounts/abi"
hdwallet "github.com/miguelmota/go-ethereum-hdwallet"
)
type Node interface {
@ -28,7 +29,9 @@ type Node interface {
type EthNodeHandle struct {
n *node.Node
s *eth.Ethereum
c *eth.Config
k *keystore.KeyStore
}
func Init() (Node, error) {
@ -40,7 +43,8 @@ func Init() (Node, error) {
func (e *EthNodeHandle) Init() error {
nodeConfig := node.DefaultConfig
nodeConfig.IPCPath = "~/.go-dvote-eth.ipc"
nodeConfig.IPCPath = "run/eth/ipc"
nodeConfig.DataDir = "run/eth/data"
//might also make sense to use staticnodes instead of bootstrap
var urls = []string{
@ -66,39 +70,46 @@ func (e *EthNodeHandle) Init() error {
ethConfig := eth.DefaultConfig
ethConfig.NetworkId = 1714
ethConfig.SyncMode = downloader.LightSync
//ethConfig.SyncMode = downloader.LightSync
var genesisJson *os.File
genesisJson, err = os.Open("genesis.json")
genesisBytes, _ := ioutil.ReadAll(genesisJson)
g := new(core.Genesis)
g.UnmarshalJSON(genesisBytes)
ethConfig.Genesis = g
ks := keystore.NewKeyStore("run/eth/keystore", keystore.StandardScryptN, keystore.StandardScryptP)
e.n = n
e.c = &ethConfig
e.k = ks
return nil
}
func (e *EthNodeHandle) Start() {
utils.RegisterEthService(e.n, e.c)
// start the stack and watch for SIG events
utils.StartNode(e.n)
//api := node.NewPublicAdminAPI(e.n)
//info, _ := api.NodeInfo()
//fmt.Println(info)
//client, _ := ethclient.Dial(e.n.IPCEndpoint())
//ctx, _ := context.WithCancel(context.TODO())
//sync, _ := client.SyncProgress(ctx)
//fmt.Println(sync)
// wait for explicit shutdown
//e.n.Wait()
//download chain?
if len(e.k.Accounts()) < 1 {
e.createAccount()
} else {
phrase := getPassPhrase("please provide primary account passphrase", false)
e.k.TimedUnlock(e.k.Accounts()[0], phrase, time.Duration(0))
}
}
func (e *EthNodeHandle) LinkBatch(data []byte) error {
contractAddr := "0x3e4FfefF898580eC8132A97A91543c8fdeF1210E"
// contractAddr := "0x3e4FfefF898580eC8132A97A91543c8fdeF1210E"
bigWalletAddr := "0x781b6544b1a73c6d779eb23c7369cf8039640793"
var gasLimit uint64
gasLimit = 100000000000000000
return e.sendContractTx(contractAddr, gasLimit, data)
gasLimit = 8000000
return e.sendContractTx(bigWalletAddr, gasLimit, data)
}
// might be worthwhile to create generic SendTx to call contracttx, deploytx, etc
func (e *EthNodeHandle) sendContractTx(addr string, limit uint64, data []byte) error {
fmt.Println(e.n)
client, err := ethclient.Dial(e.n.IPCEndpoint())
fmt.Println("Got IPC Endpoint:" + e.n.IPCEndpoint())
@ -107,22 +118,14 @@ func (e *EthNodeHandle) sendContractTx(addr string, limit uint64, data []byte) e
defer cancel()
fmt.Println("context created")
mnemonic := "perfect kite link property simple eight welcome spring enforce universe barely cargo"
wallet, err := hdwallet.NewFromMnemonic(mnemonic)
if err != nil {
log.Fatal(err)
}
path := hdwallet.MustParseDerivationPath("m/44'/60'/0'/0/0")
account, err := wallet.Derive(path, true)
if err != nil {
log.Fatal(err)
accounts := e.k.Accounts()
fmt.Println("Listing accounts")
for i, a := range accounts {
fmt.Printf("Found account %d %s\n", i, a.Address.String())
}
fmt.Println("recovered acct")
key, err := wallet.PrivateKey(account)
sendaddr, err := wallet.Address(account)
nonce, _ := client.NonceAt(ctx, sendaddr, nil)
acc := accounts[0]
sendAddr := acc.Address
nonce, _ := client.NonceAt(ctx, sendAddr, nil)
if err != nil {
fmt.Println("error")
return err
@ -131,11 +134,49 @@ func (e *EthNodeHandle) sendContractTx(addr string, limit uint64, data []byte) e
fmt.Println("creating tx")
price, _ := client.SuggestGasPrice(ctx)
fmt.Println(price)
tx := types.NewTransaction(nonce, common.HexToAddress(addr), big.NewInt(0), limit, price, data)
signedTx, _ := types.SignTx(tx, types.HomesteadSigner{}, key)
var empty []byte
tx := types.NewTransaction(nonce, common.HexToAddress(addr), big.NewInt(1), limit, price, empty)
signedTx, err := e.k.SignTx(acc, tx, big.NewInt(int64(e.c.NetworkId)))
if err != nil {
fmt.Printf("Signing error: %s", err)
}
//create ctx
err = client.SendTransaction(ctx, signedTx)
fmt.Println(err)
//fix return
//fix return*/
return err
}
func (e *EthNodeHandle) createAccount() error {
phrase := getPassPhrase("Your new account will be locked with a passphrase. Please give a passphrase. Do not forget it!.", true)
acc, err := e.k.NewAccount(phrase)
if err != nil {
utils.Fatalf("Failed to create account: %v", err)
}
fmt.Printf("Address: {%x}\n", acc.Address)
e.k.TimedUnlock(e.k.Accounts()[0], phrase, time.Duration(0))
return nil
}
func getPassPhrase(prompt string, confirmation bool) string {
// Otherwise prompt the user for the password
if prompt != "" {
fmt.Println(prompt)
}
phrase, err := console.Stdin.PromptPassword("Passphrase: ")
if err != nil {
utils.Fatalf("Failed to read passphrase: %v", err)
}
if confirmation {
confirm, err := console.Stdin.PromptPassword("Repeat passphrase: ")
if err != nil {
utils.Fatalf("Failed to read passphrase confirmation: %v", err)
}
if phrase != confirm {
utils.Fatalf("Passphrases do not match")
}
}
return phrase
}

+ 32
- 0
cmd/relay/genesis.json

@ -0,0 +1,32 @@
{
"config": {
"chainId": 1714,
"homesteadBlock": 1,
"eip150Block": 2,
"eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"eip155Block": 3,
"eip158Block": 3,
"byzantiumBlock": 4,
"clique": {
"period": 5,
"epoch": 30000
}
},
"nonce": "0x0",
"timestamp": "0x5b9e77f2",
"extraData": "0x00000000000000000000000000000000000000000000000000000000000000006c1f38109f42577d751c8a13602b8047e1a0c85b7acfd7f141d06d5b931d75cb91b57829045294fba4810646a3330f77b8456647c8445fadf41fdbe4c175bc30542d81b3397bfbf3f56d4ce696745d130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"gasLimit": "0x47b760",
"difficulty": "0x1",
"mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"coinbase": "0x0000000000000000000000000000000000000000",
"alloc": {
"781b6544b1a73c6d779eb23c7369cf8039640793": {
"balance": "0x200000000000000000000000000000000000000000000000000000000000000"
}
},
"number": "0x0",
"gasUsed": "0x0",
"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
}

+ 1
- 0
cmd/relay/relay.go

@ -7,6 +7,7 @@ import (
"bytes"
"os"
"flag"
"github.com/vocdoni/go-dvote/batch"
"github.com/vocdoni/go-dvote/net"
"github.com/vocdoni/go-dvote/db"

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