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// Copyright 2017 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"encoding/json"
"fmt"
"time"
"github.com/ethereum/go-ethereum/accounts/keystore"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/log"
)
// deployNode creates a new node configuration based on some user input.
func (w *wizard) deployNode(boot bool) {
// Do some sanity check before the user wastes time on input
if w.conf.Genesis == nil {
log.Error("No genesis block configured")
return
}
if w.conf.ethstats == "" {
log.Error("No ethstats server configured")
return
}
// Select the server to interact with
server := w.selectServer()
if server == "" {
return
}
client := w.servers[server]
// Retrieve any active node configurations from the server
infos, err := checkNode(client, w.network, boot)
if err != nil {
if boot {
infos = &nodeInfos{port: 30303, peersTotal: 512, peersLight: 256}
} else {
infos = &nodeInfos{port: 30303, peersTotal: 50, peersLight: 0, gasTarget: 4.7, gasPrice: 18}
}
}
existed := err == nil
infos.genesis, _ = json.MarshalIndent(w.conf.Genesis, "", " ")
infos.network = w.conf.Genesis.Config.ChainId.Int64()
// Figure out where the user wants to store the persistent data
fmt.Println()
if infos.datadir == "" {
fmt.Printf("Where should data be stored on the remote machine?\n")
infos.datadir = w.readString()
} else {
fmt.Printf("Where should data be stored on the remote machine? (default = %s)\n", infos.datadir)
infos.datadir = w.readDefaultString(infos.datadir)
}
if w.conf.Genesis.Config.Ethash != nil && !boot {
fmt.Println()
if infos.ethashdir == "" {
fmt.Printf("Where should the ethash mining DAGs be stored on the remote machine?\n")
infos.ethashdir = w.readString()
} else {
fmt.Printf("Where should the ethash mining DAGs be stored on the remote machine? (default = %s)\n", infos.ethashdir)
infos.ethashdir = w.readDefaultString(infos.ethashdir)
}
}
// Figure out which port to listen on
fmt.Println()
fmt.Printf("Which TCP/UDP port to listen on? (default = %d)\n", infos.port)
infos.port = w.readDefaultInt(infos.port)
// Figure out how many peers to allow (different based on node type)
fmt.Println()
fmt.Printf("How many peers to allow connecting? (default = %d)\n", infos.peersTotal)
infos.peersTotal = w.readDefaultInt(infos.peersTotal)
// Figure out how many light peers to allow (different based on node type)
fmt.Println()
fmt.Printf("How many light peers to allow connecting? (default = %d)\n", infos.peersLight)
infos.peersLight = w.readDefaultInt(infos.peersLight)
// Set a proper name to report on the stats page
fmt.Println()
if infos.ethstats == "" {
fmt.Printf("What should the node be called on the stats page?\n")
infos.ethstats = w.readString() + ":" + w.conf.ethstats
} else {
fmt.Printf("What should the node be called on the stats page? (default = %s)\n", infos.ethstats)
infos.ethstats = w.readDefaultString(infos.ethstats) + ":" + w.conf.ethstats
}
// If the node is a miner/signer, load up needed credentials
if !boot {
if w.conf.Genesis.Config.Ethash != nil {
// Ethash based miners only need an etherbase to mine against
fmt.Println()
if infos.etherbase == "" {
fmt.Printf("What address should the miner user?\n")
for {
if address := w.readAddress(); address != nil {
infos.etherbase = address.Hex()
break
}
}
} else {
fmt.Printf("What address should the miner user? (default = %s)\n", infos.etherbase)
infos.etherbase = w.readDefaultAddress(common.HexToAddress(infos.etherbase)).Hex()
}
} else if w.conf.Genesis.Config.Clique != nil {
// If a previous signer was already set, offer to reuse it
if infos.keyJSON != "" {
if key, err := keystore.DecryptKey([]byte(infos.keyJSON), infos.keyPass); err != nil {
infos.keyJSON, infos.keyPass = "", ""
} else {
fmt.Println()
fmt.Printf("Reuse previous (%s) signing account (y/n)? (default = yes)\n", key.Address.Hex())
if w.readDefaultString("y") != "y" {
infos.keyJSON, infos.keyPass = "", ""
}
}
}
// Clique based signers need a keyfile and unlock password, ask if unavailable
if infos.keyJSON == "" {
fmt.Println()
fmt.Println("Please paste the signer's key JSON:")
infos.keyJSON = w.readJSON()
fmt.Println()
fmt.Println("What's the unlock password for the account? (won't be echoed)")
infos.keyPass = w.readPassword()
if _, err := keystore.DecryptKey([]byte(infos.keyJSON), infos.keyPass); err != nil {
log.Error("Failed to decrypt key with given passphrase")
return
}
}
}
// Establish the gas dynamics to be enforced by the signer
fmt.Println()
fmt.Printf("What gas limit should empty blocks target (MGas)? (default = %0.3f)\n", infos.gasTarget)
infos.gasTarget = w.readDefaultFloat(infos.gasTarget)
fmt.Println()
fmt.Printf("What gas price should the signer require (GWei)? (default = %0.3f)\n", infos.gasPrice)
infos.gasPrice = w.readDefaultFloat(infos.gasPrice)
}
// Try to deploy the full node on the host
nocache := false
if existed {
fmt.Println()
fmt.Printf("Should the node be built from scratch (y/n)? (default = no)\n")
nocache = w.readDefaultString("n") != "n"
}
if out, err := deployNode(client, w.network, w.conf.bootnodes, infos, nocache); err != nil {
log.Error("Failed to deploy Ethereum node container", "err", err)
if len(out) > 0 {
fmt.Printf("%s\n", out)
}
return
}
// All ok, run a network scan to pick any changes up
log.Info("Waiting for node to finish booting")
time.Sleep(3 * time.Second)
w.networkStats()
}
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