mirror of
https://github.com/arnaucube/go-dvote.git
synced 2026-02-28 05:26:46 +01:00
chain implementation working for basic transactions
This commit is contained in:
imw
117
chain/chain.go
117
chain/chain.go
@@ -3,21 +3,22 @@ package chain
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import (
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"context"
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"fmt"
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"log"
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"io/ioutil"
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"math/big"
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"os"
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"time"
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"github.com/ethereum/go-ethereum/accounts/keystore"
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"github.com/ethereum/go-ethereum/cmd/utils"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/console"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/eth"
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"github.com/ethereum/go-ethereum/eth/downloader"
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"github.com/ethereum/go-ethereum/ethclient"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/p2p/enode"
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// "github.com/ethereum/go-ethereum/accounts/abi"
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hdwallet "github.com/miguelmota/go-ethereum-hdwallet"
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)
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type Node interface {
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@@ -28,7 +29,9 @@ type Node interface {
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type EthNodeHandle struct {
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n *node.Node
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s *eth.Ethereum
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c *eth.Config
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k *keystore.KeyStore
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}
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func Init() (Node, error) {
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@@ -40,7 +43,8 @@ func Init() (Node, error) {
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func (e *EthNodeHandle) Init() error {
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nodeConfig := node.DefaultConfig
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nodeConfig.IPCPath = "~/.go-dvote-eth.ipc"
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nodeConfig.IPCPath = "run/eth/ipc"
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nodeConfig.DataDir = "run/eth/data"
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//might also make sense to use staticnodes instead of bootstrap
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var urls = []string{
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@@ -66,39 +70,46 @@ func (e *EthNodeHandle) Init() error {
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ethConfig := eth.DefaultConfig
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ethConfig.NetworkId = 1714
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ethConfig.SyncMode = downloader.LightSync
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//ethConfig.SyncMode = downloader.LightSync
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var genesisJson *os.File
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genesisJson, err = os.Open("genesis.json")
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genesisBytes, _ := ioutil.ReadAll(genesisJson)
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g := new(core.Genesis)
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g.UnmarshalJSON(genesisBytes)
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ethConfig.Genesis = g
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ks := keystore.NewKeyStore("run/eth/keystore", keystore.StandardScryptN, keystore.StandardScryptP)
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e.n = n
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e.c = ðConfig
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e.k = ks
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return nil
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}
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func (e *EthNodeHandle) Start() {
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utils.RegisterEthService(e.n, e.c)
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// start the stack and watch for SIG events
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utils.StartNode(e.n)
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//api := node.NewPublicAdminAPI(e.n)
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//info, _ := api.NodeInfo()
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//fmt.Println(info)
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//client, _ := ethclient.Dial(e.n.IPCEndpoint())
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//ctx, _ := context.WithCancel(context.TODO())
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//sync, _ := client.SyncProgress(ctx)
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//fmt.Println(sync)
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// wait for explicit shutdown
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//e.n.Wait()
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//download chain?
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if len(e.k.Accounts()) < 1 {
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e.createAccount()
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} else {
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phrase := getPassPhrase("please provide primary account passphrase", false)
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e.k.TimedUnlock(e.k.Accounts()[0], phrase, time.Duration(0))
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}
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}
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func (e *EthNodeHandle) LinkBatch(data []byte) error {
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contractAddr := "0x3e4FfefF898580eC8132A97A91543c8fdeF1210E"
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// contractAddr := "0x3e4FfefF898580eC8132A97A91543c8fdeF1210E"
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bigWalletAddr := "0x781b6544b1a73c6d779eb23c7369cf8039640793"
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var gasLimit uint64
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gasLimit = 100000000000000000
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return e.sendContractTx(contractAddr, gasLimit, data)
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gasLimit = 8000000
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return e.sendContractTx(bigWalletAddr, gasLimit, data)
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}
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// might be worthwhile to create generic SendTx to call contracttx, deploytx, etc
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func (e *EthNodeHandle) sendContractTx(addr string, limit uint64, data []byte) error {
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fmt.Println(e.n)
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client, err := ethclient.Dial(e.n.IPCEndpoint())
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fmt.Println("Got IPC Endpoint:" + e.n.IPCEndpoint())
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@@ -107,22 +118,14 @@ func (e *EthNodeHandle) sendContractTx(addr string, limit uint64, data []byte) e
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defer cancel()
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fmt.Println("context created")
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mnemonic := "perfect kite link property simple eight welcome spring enforce universe barely cargo"
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wallet, err := hdwallet.NewFromMnemonic(mnemonic)
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if err != nil {
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log.Fatal(err)
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accounts := e.k.Accounts()
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fmt.Println("Listing accounts")
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for i, a := range accounts {
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fmt.Printf("Found account %d %s\n", i, a.Address.String())
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}
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path := hdwallet.MustParseDerivationPath("m/44'/60'/0'/0/0")
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account, err := wallet.Derive(path, true)
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if err != nil {
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log.Fatal(err)
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}
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fmt.Println("recovered acct")
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key, err := wallet.PrivateKey(account)
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sendaddr, err := wallet.Address(account)
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nonce, _ := client.NonceAt(ctx, sendaddr, nil)
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acc := accounts[0]
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sendAddr := acc.Address
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nonce, _ := client.NonceAt(ctx, sendAddr, nil)
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if err != nil {
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fmt.Println("error")
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return err
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@@ -131,11 +134,49 @@ func (e *EthNodeHandle) sendContractTx(addr string, limit uint64, data []byte) e
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fmt.Println("creating tx")
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price, _ := client.SuggestGasPrice(ctx)
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fmt.Println(price)
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tx := types.NewTransaction(nonce, common.HexToAddress(addr), big.NewInt(0), limit, price, data)
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signedTx, _ := types.SignTx(tx, types.HomesteadSigner{}, key)
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var empty []byte
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tx := types.NewTransaction(nonce, common.HexToAddress(addr), big.NewInt(1), limit, price, empty)
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signedTx, err := e.k.SignTx(acc, tx, big.NewInt(int64(e.c.NetworkId)))
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if err != nil {
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fmt.Printf("Signing error: %s", err)
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}
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//create ctx
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err = client.SendTransaction(ctx, signedTx)
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fmt.Println(err)
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//fix return
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//fix return*/
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return err
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}
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func (e *EthNodeHandle) createAccount() error {
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phrase := getPassPhrase("Your new account will be locked with a passphrase. Please give a passphrase. Do not forget it!.", true)
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acc, err := e.k.NewAccount(phrase)
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if err != nil {
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utils.Fatalf("Failed to create account: %v", err)
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}
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fmt.Printf("Address: {%x}\n", acc.Address)
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e.k.TimedUnlock(e.k.Accounts()[0], phrase, time.Duration(0))
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return nil
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}
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func getPassPhrase(prompt string, confirmation bool) string {
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// Otherwise prompt the user for the password
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if prompt != "" {
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fmt.Println(prompt)
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}
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phrase, err := console.Stdin.PromptPassword("Passphrase: ")
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if err != nil {
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utils.Fatalf("Failed to read passphrase: %v", err)
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}
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if confirmation {
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confirm, err := console.Stdin.PromptPassword("Repeat passphrase: ")
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if err != nil {
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utils.Fatalf("Failed to read passphrase confirmation: %v", err)
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}
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if phrase != confirm {
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utils.Fatalf("Passphrases do not match")
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}
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}
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return phrase
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}
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32
cmd/relay/genesis.json
Normal file
32
cmd/relay/genesis.json
Normal file
@@ -0,0 +1,32 @@
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{
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"config": {
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"chainId": 1714,
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"homesteadBlock": 1,
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"eip150Block": 2,
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"eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
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"eip155Block": 3,
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"eip158Block": 3,
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"byzantiumBlock": 4,
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"clique": {
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"period": 5,
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"epoch": 30000
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}
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},
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"nonce": "0x0",
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"timestamp": "0x5b9e77f2",
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"extraData": "0x00000000000000000000000000000000000000000000000000000000000000006c1f38109f42577d751c8a13602b8047e1a0c85b7acfd7f141d06d5b931d75cb91b57829045294fba4810646a3330f77b8456647c8445fadf41fdbe4c175bc30542d81b3397bfbf3f56d4ce696745d130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
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"gasLimit": "0x47b760",
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"difficulty": "0x1",
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"mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
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"coinbase": "0x0000000000000000000000000000000000000000",
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"alloc": {
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"781b6544b1a73c6d779eb23c7369cf8039640793": {
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"balance": "0x200000000000000000000000000000000000000000000000000000000000000"
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}
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},
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"number": "0x0",
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"gasUsed": "0x0",
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"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
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}
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@@ -7,6 +7,7 @@ import (
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"bytes"
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"os"
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"flag"
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"github.com/vocdoni/go-dvote/batch"
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"github.com/vocdoni/go-dvote/net"
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"github.com/vocdoni/go-dvote/db"
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