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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 (
"bufio"
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"sync"
"github.com/ethereum/go-ethereum/log"
)
// makeWizard creates and returns a new puppeth wizard.
func makeWizard(network string) *wizard {
return &wizard{
network: network,
conf: config{
Servers: make(map[string][]byte),
},
servers: make(map[string]*sshClient),
services: make(map[string][]string),
in: bufio.NewReader(os.Stdin),
}
}
// run displays some useful infos to the user, starting on the journey of
// setting up a new or managing an existing Ethereum private network.
func (w *wizard) run() {
fmt.Println("+-----------------------------------------------------------+")
fmt.Println("| Welcome to puppeth, your Ethereum private network manager |")
fmt.Println("| |")
fmt.Println("| This tool lets you create a new Ethereum network down to |")
fmt.Println("| the genesis block, bootnodes, miners and ethstats servers |")
fmt.Println("| without the hassle that it would normally entail. |")
fmt.Println("| |")
fmt.Println("| Puppeth uses SSH to dial in to remote servers, and builds |")
fmt.Println("| its network components out of Docker containers using the |")
fmt.Println("| docker-compose toolset. |")
fmt.Println("+-----------------------------------------------------------+")
fmt.Println()
// Make sure we have a good network name to work with fmt.Println()
if w.network == "" {
fmt.Println("Please specify a network name to administer (no spaces, please)")
for {
w.network = w.readString()
if !strings.Contains(w.network, " ") {
fmt.Printf("\nSweet, you can set this via --network=%s next time!\n\n", w.network)
break
}
log.Error("I also like to live dangerously, still no spaces")
}
}
log.Info("Administering Ethereum network", "name", w.network)
// Load initial configurations and connect to all live servers
w.conf.path = filepath.Join(os.Getenv("HOME"), ".puppeth", w.network)
blob, err := ioutil.ReadFile(w.conf.path)
if err != nil {
log.Warn("No previous configurations found", "path", w.conf.path)
} else if err := json.Unmarshal(blob, &w.conf); err != nil {
log.Crit("Previous configuration corrupted", "path", w.conf.path, "err", err)
} else {
// Dial all previously known servers concurrently
var pend sync.WaitGroup
for server, pubkey := range w.conf.Servers {
pend.Add(1)
go func(server string, pubkey []byte) {
defer pend.Done()
log.Info("Dialing previously configured server", "server", server)
client, err := dial(server, pubkey)
if err != nil {
log.Error("Previous server unreachable", "server", server, "err", err)
}
w.lock.Lock()
w.servers[server] = client
w.lock.Unlock()
}(server, pubkey)
}
pend.Wait()
w.networkStats()
}
// Basics done, loop ad infinitum about what to do
for {
fmt.Println()
fmt.Println("What would you like to do? (default = stats)")
fmt.Println(" 1. Show network stats")
if w.conf.Genesis == nil {
fmt.Println(" 2. Configure new genesis")
} else {
fmt.Println(" 2. Manage existing genesis")
}
if len(w.servers) == 0 {
fmt.Println(" 3. Track new remote server")
} else {
fmt.Println(" 3. Manage tracked machines")
}
if len(w.services) == 0 {
fmt.Println(" 4. Deploy network components")
} else {
fmt.Println(" 4. Manage network components")
}
choice := w.read()
switch {
case choice == "" || choice == "1":
w.networkStats()
case choice == "2":
if w.conf.Genesis == nil {
w.makeGenesis()
} else {
w.manageGenesis()
}
case choice == "3":
if len(w.servers) == 0 {
if w.makeServer() != "" {
w.networkStats()
}
} else {
w.manageServers()
}
case choice == "4":
if len(w.services) == 0 {
w.deployComponent()
} else {
w.manageComponents()
}
default:
log.Error("That's not something I can do")
}
}
}
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