80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package miner
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import (
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"io/ioutil"
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"math/big"
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"github.com/ethereum/go-ethereum/accounts/keystore"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/eth"
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"github.com/ethereum/go-ethereum/node"
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)
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// NewDevNode returns node with clieque engine and prefunded accounts.
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func NewDevNode(faucet common.Address) (*node.Node, error) {
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cfg := node.DefaultConfig
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ipc, err := ioutil.TempFile("", "devnode-ipc-")
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if err != nil {
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return nil, err
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}
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cfg.IPCPath = ipc.Name()
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cfg.HTTPModules = []string{"eth"}
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cfg.DataDir = ""
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cfg.NoUSB = true
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cfg.P2P.MaxPeers = 0
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cfg.P2P.ListenAddr = ":0"
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cfg.P2P.NoDiscovery = true
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cfg.P2P.DiscoveryV5 = false
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stack, err := node.New(&cfg)
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if err != nil {
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return nil, err
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}
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ks := stack.AccountManager().Backends(keystore.KeyStoreType)[0].(*keystore.KeyStore)
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// ensure that etherbase is added to an account manager
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etherbase, err := crypto.GenerateKey()
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if err != nil {
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return nil, err
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}
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acc, err := ks.ImportECDSA(etherbase, "")
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if err != nil {
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return nil, err
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}
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err = ks.Unlock(acc, "")
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if err != nil {
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return nil, err
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}
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ethcfg := eth.DefaultConfig
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ethcfg.NetworkId = 1337
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// 0 - mine only if transaction pending
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ethcfg.Genesis = core.DeveloperGenesisBlock(0, faucet)
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extra := make([]byte, 32) // extraVanity
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extra = append(extra, acc.Address[:]...)
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extra = append(extra, make([]byte, 65)...) // extraSeal
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ethcfg.Genesis.ExtraData = extra
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return stack, stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
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return eth.New(ctx, ðcfg)
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})
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}
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// StartWithMiner starts node with eth service and a miner.
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func StartWithMiner(stack *node.Node) error {
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err := stack.Start()
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if err != nil {
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return err
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}
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var ethereum *eth.Ethereum
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err = stack.Service(ðereum)
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if err != nil {
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return err
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}
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ethereum.TxPool().SetGasPrice(big.NewInt(1))
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return ethereum.StartMining(0)
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}
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