aboutsummaryrefslogblamecommitdiffstats
path: root/cmd/puppeth/module_wallet.go
blob: 90812c4a0b8b78a8a1bccf348b551c476cd0831b (plain) (tree)































                                                                       
                          





                                                                    
                                                                                                                                                                                                                      
 





                                                                                       
































































                                                                                                                             
                                                                      








                                                                                     
                                                                                                                                                                                                      
         
                                                                                                                                             














                                                                            
                                                                               


























































                                                                                                                                    
// 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 (
    "bytes"
    "fmt"
    "html/template"
    "math/rand"
    "path/filepath"
    "strconv"
    "strings"

    "github.com/ethereum/go-ethereum/log"
)

// walletDockerfile is the Dockerfile required to run a web wallet.
var walletDockerfile = `
FROM puppeth/wallet:latest

ADD genesis.json /genesis.json

RUN \
  echo 'node server.js &'                     > wallet.sh && \
    echo 'geth --cache 512 init /genesis.json' >> wallet.sh && \
    echo $'exec geth --networkid {{.NetworkID}} --port {{.NodePort}} --bootnodes {{.Bootnodes}} --ethstats \'{{.Ethstats}}\' --cache=512 --rpc --rpcaddr=0.0.0.0 --rpccorsdomain "*" --rpcvhosts "*"' >> wallet.sh

RUN \
    sed -i 's/PuppethNetworkID/{{.NetworkID}}/g' dist/js/etherwallet-master.js && \
    sed -i 's/PuppethNetwork/{{.Network}}/g'     dist/js/etherwallet-master.js && \
    sed -i 's/PuppethDenom/{{.Denom}}/g'         dist/js/etherwallet-master.js && \
    sed -i 's/PuppethHost/{{.Host}}/g'           dist/js/etherwallet-master.js && \
    sed -i 's/PuppethRPCPort/{{.RPCPort}}/g'     dist/js/etherwallet-master.js

ENTRYPOINT ["/bin/sh", "wallet.sh"]
`

// walletComposefile is the docker-compose.yml file required to deploy and
// maintain a web wallet.
var walletComposefile = `
version: '2'
services:
  wallet:
    build: .
    image: {{.Network}}/wallet
    ports:
      - "{{.NodePort}}:{{.NodePort}}"
      - "{{.NodePort}}:{{.NodePort}}/udp"
      - "{{.RPCPort}}:8545"{{if not .VHost}}
      - "{{.WebPort}}:80"{{end}}
    volumes:
      - {{.Datadir}}:/root/.ethereum
    environment:
      - NODE_PORT={{.NodePort}}/tcp
      - STATS={{.Ethstats}}{{if .VHost}}
      - VIRTUAL_HOST={{.VHost}}
      - VIRTUAL_PORT=80{{end}}
    logging:
      driver: "json-file"
      options:
        max-size: "1m"
        max-file: "10"
    restart: always
`

// deployWallet deploys a new web wallet container to a remote machine via SSH,
// docker and docker-compose. If an instance with the specified network name
// already exists there, it will be overwritten!
func deployWallet(client *sshClient, network string, bootnodes []string, config *walletInfos, nocache bool) ([]byte, error) {
    // Generate the content to upload to the server
    workdir := fmt.Sprintf("%d", rand.Int63())
    files := make(map[string][]byte)

    dockerfile := new(bytes.Buffer)
    template.Must(template.New("").Parse(walletDockerfile)).Execute(dockerfile, map[string]interface{}{
        "Network":   strings.ToTitle(network),
        "Denom":     strings.ToUpper(network),
        "NetworkID": config.network,
        "NodePort":  config.nodePort,
        "RPCPort":   config.rpcPort,
        "Bootnodes": strings.Join(bootnodes, ","),
        "Ethstats":  config.ethstats,
        "Host":      client.address,
    })
    files[filepath.Join(workdir, "Dockerfile")] = dockerfile.Bytes()

    composefile := new(bytes.Buffer)
    template.Must(template.New("").Parse(walletComposefile)).Execute(composefile, map[string]interface{}{
        "Datadir":  config.datadir,
        "Network":  network,
        "NodePort": config.nodePort,
        "RPCPort":  config.rpcPort,
        "VHost":    config.webHost,
        "WebPort":  config.webPort,
        "Ethstats": config.ethstats[:strings.Index(config.ethstats, ":")],
    })
    files[filepath.Join(workdir, "docker-compose.yaml")] = composefile.Bytes()

    files[filepath.Join(workdir, "genesis.json")] = config.genesis

    // Upload the deployment files to the remote server (and clean up afterwards)
    if out, err := client.Upload(files); err != nil {
        return out, err
    }
    defer client.Run("rm -rf " + workdir)

    // Build and deploy the boot or seal node service
    if nocache {
        return nil, client.Stream(fmt.Sprintf("cd %s && docker-compose -p %s build --pull --no-cache && docker-compose -p %s up -d --force-recreate --timeout 60", workdir, network, network))
    }
    return nil, client.Stream(fmt.Sprintf("cd %s && docker-compose -p %s up -d --build --force-recreate --timeout 60", workdir, network))
}

// walletInfos is returned from a web wallet status check to allow reporting
// various configuration parameters.
type walletInfos struct {
    genesis  []byte
    network  int64
    datadir  string
    ethstats string
    nodePort int
    rpcPort  int
    webHost  string
    webPort  int
}

// Report converts the typed struct into a plain string->string map, containing
// most - but not all - fields for reporting to the user.
func (info *walletInfos) Report() map[string]string {
    report := map[string]string{
        "Data directory":         info.datadir,
        "Ethstats username":      info.ethstats,
        "Node listener port ":    strconv.Itoa(info.nodePort),
        "RPC listener port ":     strconv.Itoa(info.rpcPort),
        "Website address ":       info.webHost,
        "Website listener port ": strconv.Itoa(info.webPort),
    }
    return report
}

// checkWallet does a health-check against web wallet server to verify whether
// it's running, and if yes, whether it's responsive.
func checkWallet(client *sshClient, network string) (*walletInfos, error) {
    // Inspect a possible web wallet container on the host
    infos, err := inspectContainer(client, fmt.Sprintf("%s_wallet_1", network))
    if err != nil {
        return nil, err
    }
    if !infos.running {
        return nil, ErrServiceOffline
    }
    // Resolve the port from the host, or the reverse proxy
    webPort := infos.portmap["80/tcp"]
    if webPort == 0 {
        if proxy, _ := checkNginx(client, network); proxy != nil {
            webPort = proxy.port
        }
    }
    if webPort == 0 {
        return nil, ErrNotExposed
    }
    // Resolve the host from the reverse-proxy and the config values
    host := infos.envvars["VIRTUAL_HOST"]
    if host == "" {
        host = client.server
    }
    // Run a sanity check to see if the devp2p and RPC ports are reachable
    nodePort := infos.portmap[infos.envvars["NODE_PORT"]]
    if err = checkPort(client.server, nodePort); err != nil {
        log.Warn(fmt.Sprintf("Wallet devp2p port seems unreachable"), "server", client.server, "port", nodePort, "err", err)
    }
    rpcPort := infos.portmap["8545/tcp"]
    if err = checkPort(client.server, rpcPort); err != nil {
        log.Warn(fmt.Sprintf("Wallet RPC port seems unreachable"), "server", client.server, "port", rpcPort, "err", err)
    }
    // Assemble and return the useful infos
    stats := &walletInfos{
        datadir:  infos.volumes["/root/.ethereum"],
        nodePort: nodePort,
        rpcPort:  rpcPort,
        webHost:  host,
        webPort:  webPort,
        ethstats: infos.envvars["STATS"],
    }
    return stats, nil
}