github.com/clem109/go-ethereum@v1.8.3-0.20180316121352-fe6cf00f480a/cmd/puppeth/wizard_node.go (about)

     1  // Copyright 2017 The go-ethereum Authors
     2  // This file is part of go-ethereum.
     3  //
     4  // go-ethereum is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // go-ethereum is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU General Public License
    15  // along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package main
    18  
    19  import (
    20  	"encoding/json"
    21  	"fmt"
    22  	"time"
    23  
    24  	"github.com/ethereum/go-ethereum/accounts/keystore"
    25  	"github.com/ethereum/go-ethereum/common"
    26  	"github.com/ethereum/go-ethereum/log"
    27  )
    28  
    29  // deployNode creates a new node configuration based on some user input.
    30  func (w *wizard) deployNode(boot bool) {
    31  	// Do some sanity check before the user wastes time on input
    32  	if w.conf.Genesis == nil {
    33  		log.Error("No genesis block configured")
    34  		return
    35  	}
    36  	if w.conf.ethstats == "" {
    37  		log.Error("No ethstats server configured")
    38  		return
    39  	}
    40  	// Select the server to interact with
    41  	server := w.selectServer()
    42  	if server == "" {
    43  		return
    44  	}
    45  	client := w.servers[server]
    46  
    47  	// Retrieve any active node configurations from the server
    48  	infos, err := checkNode(client, w.network, boot)
    49  	if err != nil {
    50  		if boot {
    51  			infos = &nodeInfos{port: 30303, peersTotal: 512, peersLight: 256}
    52  		} else {
    53  			infos = &nodeInfos{port: 30303, peersTotal: 50, peersLight: 0, gasTarget: 4.7, gasPrice: 18}
    54  		}
    55  	}
    56  	existed := err == nil
    57  
    58  	infos.genesis, _ = json.MarshalIndent(w.conf.Genesis, "", "  ")
    59  	infos.network = w.conf.Genesis.Config.ChainId.Int64()
    60  
    61  	// Figure out where the user wants to store the persistent data
    62  	fmt.Println()
    63  	if infos.datadir == "" {
    64  		fmt.Printf("Where should data be stored on the remote machine?\n")
    65  		infos.datadir = w.readString()
    66  	} else {
    67  		fmt.Printf("Where should data be stored on the remote machine? (default = %s)\n", infos.datadir)
    68  		infos.datadir = w.readDefaultString(infos.datadir)
    69  	}
    70  	if w.conf.Genesis.Config.Ethash != nil && !boot {
    71  		fmt.Println()
    72  		if infos.ethashdir == "" {
    73  			fmt.Printf("Where should the ethash mining DAGs be stored on the remote machine?\n")
    74  			infos.ethashdir = w.readString()
    75  		} else {
    76  			fmt.Printf("Where should the ethash mining DAGs be stored on the remote machine? (default = %s)\n", infos.ethashdir)
    77  			infos.ethashdir = w.readDefaultString(infos.ethashdir)
    78  		}
    79  	}
    80  	// Figure out which port to listen on
    81  	fmt.Println()
    82  	fmt.Printf("Which TCP/UDP port to listen on? (default = %d)\n", infos.port)
    83  	infos.port = w.readDefaultInt(infos.port)
    84  
    85  	// Figure out how many peers to allow (different based on node type)
    86  	fmt.Println()
    87  	fmt.Printf("How many peers to allow connecting? (default = %d)\n", infos.peersTotal)
    88  	infos.peersTotal = w.readDefaultInt(infos.peersTotal)
    89  
    90  	// Figure out how many light peers to allow (different based on node type)
    91  	fmt.Println()
    92  	fmt.Printf("How many light peers to allow connecting? (default = %d)\n", infos.peersLight)
    93  	infos.peersLight = w.readDefaultInt(infos.peersLight)
    94  
    95  	// Set a proper name to report on the stats page
    96  	fmt.Println()
    97  	if infos.ethstats == "" {
    98  		fmt.Printf("What should the node be called on the stats page?\n")
    99  		infos.ethstats = w.readString() + ":" + w.conf.ethstats
   100  	} else {
   101  		fmt.Printf("What should the node be called on the stats page? (default = %s)\n", infos.ethstats)
   102  		infos.ethstats = w.readDefaultString(infos.ethstats) + ":" + w.conf.ethstats
   103  	}
   104  	// If the node is a miner/signer, load up needed credentials
   105  	if !boot {
   106  		if w.conf.Genesis.Config.Ethash != nil {
   107  			// Ethash based miners only need an etherbase to mine against
   108  			fmt.Println()
   109  			if infos.etherbase == "" {
   110  				fmt.Printf("What address should the miner user?\n")
   111  				for {
   112  					if address := w.readAddress(); address != nil {
   113  						infos.etherbase = address.Hex()
   114  						break
   115  					}
   116  				}
   117  			} else {
   118  				fmt.Printf("What address should the miner user? (default = %s)\n", infos.etherbase)
   119  				infos.etherbase = w.readDefaultAddress(common.HexToAddress(infos.etherbase)).Hex()
   120  			}
   121  		} else if w.conf.Genesis.Config.Clique != nil {
   122  			// If a previous signer was already set, offer to reuse it
   123  			if infos.keyJSON != "" {
   124  				if key, err := keystore.DecryptKey([]byte(infos.keyJSON), infos.keyPass); err != nil {
   125  					infos.keyJSON, infos.keyPass = "", ""
   126  				} else {
   127  					fmt.Println()
   128  					fmt.Printf("Reuse previous (%s) signing account (y/n)? (default = yes)\n", key.Address.Hex())
   129  					if w.readDefaultString("y") != "y" {
   130  						infos.keyJSON, infos.keyPass = "", ""
   131  					}
   132  				}
   133  			}
   134  			// Clique based signers need a keyfile and unlock password, ask if unavailable
   135  			if infos.keyJSON == "" {
   136  				fmt.Println()
   137  				fmt.Println("Please paste the signer's key JSON:")
   138  				infos.keyJSON = w.readJSON()
   139  
   140  				fmt.Println()
   141  				fmt.Println("What's the unlock password for the account? (won't be echoed)")
   142  				infos.keyPass = w.readPassword()
   143  
   144  				if _, err := keystore.DecryptKey([]byte(infos.keyJSON), infos.keyPass); err != nil {
   145  					log.Error("Failed to decrypt key with given passphrase")
   146  					return
   147  				}
   148  			}
   149  		}
   150  		// Establish the gas dynamics to be enforced by the signer
   151  		fmt.Println()
   152  		fmt.Printf("What gas limit should empty blocks target (MGas)? (default = %0.3f)\n", infos.gasTarget)
   153  		infos.gasTarget = w.readDefaultFloat(infos.gasTarget)
   154  
   155  		fmt.Println()
   156  		fmt.Printf("What gas price should the signer require (GWei)? (default = %0.3f)\n", infos.gasPrice)
   157  		infos.gasPrice = w.readDefaultFloat(infos.gasPrice)
   158  	}
   159  	// Try to deploy the full node on the host
   160  	nocache := false
   161  	if existed {
   162  		fmt.Println()
   163  		fmt.Printf("Should the node be built from scratch (y/n)? (default = no)\n")
   164  		nocache = w.readDefaultString("n") != "n"
   165  	}
   166  	if out, err := deployNode(client, w.network, w.conf.bootnodes, infos, nocache); err != nil {
   167  		log.Error("Failed to deploy Ethereum node container", "err", err)
   168  		if len(out) > 0 {
   169  			fmt.Printf("%s\n", out)
   170  		}
   171  		return
   172  	}
   173  	// All ok, run a network scan to pick any changes up
   174  	log.Info("Waiting for node to finish booting")
   175  	time.Sleep(3 * time.Second)
   176  
   177  	w.networkStats()
   178  }