// 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"
)
// explorerDockerfile is the Dockerfile required to run a block explorer.
var explorerDockerfile = `
FROM puppeth/blockscout:latest
ADD genesis.json /genesis.json
RUN \
echo 'geth --cache 512 init /genesis.json' > explorer.sh && \
echo $'geth --networkid {{.NetworkID}} --syncmode "full" --gcmode "archive" --port {{.EthPort}} --bootnodes {{.Bootnodes}} --ethstats \'{{.Ethstats}}\' --cache=512 --rpc --rpcapi "net,web3,eth,shh,debug" --rpccorsdomain "*" --rpcvhosts "*" --ws --wsorigins "*" --exitwhensynced' >> explorer.sh && \
echo $'exec geth --networkid {{.NetworkID}} --syncmode "full" --gcmode "archive" --port {{.EthPort}} --bootnodes {{.Bootnodes}} --ethstats \'{{.Ethstats}}\' --cache=512 --rpc --rpcapi "net,web3,eth,shh,debug" --rpccorsdomain "*" --rpcvhosts "*" --ws --wsorigins "*" &' >> explorer.sh && \
echo '/usr/local/bin/docker-entrypoint.sh postgres &' >> explorer.sh && \
echo 'sleep 5' >> explorer.sh && \
echo 'mix do ecto.drop --force, ecto.create, ecto.migrate' >> explorer.sh && \
echo 'mix phx.server' >> explorer.sh
ENTRYPOINT ["/bin/sh", "explorer.sh"]
`
// explorerComposefile is the docker-compose.yml file required to deploy and
// maintain a block explorer.
var explorerComposefile = `
version: '2'
services:
explorer:
build: .
image: {{.Network}}/explorer
container_name: {{.Network}}_explorer_1
ports:
- "{{.EthPort}}:{{.EthPort}}"
- "{{.EthPort}}:{{.EthPort}}/udp"{{if not .VHost}}
- "{{.WebPort}}:4000"{{end}}
environment:
- ETH_PORT={{.EthPort}}
- ETH_NAME={{.EthName}}
- BLOCK_TRANSFORMER={{.Transformer}}{{if .VHost}}
- VIRTUAL_HOST={{.VHost}}
- VIRTUAL_PORT=4000{{end}}
volumes:
- {{.Datadir}}:/opt/app/.ethereum
- {{.DBDir}}:/var/lib/postgresql/data
logging:
driver: "json-file"
options:
max-size: "1m"
max-file: "10"
restart: always
`
// deployExplorer deploys a new block explorer 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 deployExplorer(client *sshClient, network string, bootnodes []string, config *explorerInfos, nocache bool, isClique 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(explorerDockerfile)).Execute(dockerfile, map[string]interface{}{
"NetworkID": config.node.network,
"Bootnodes": strings.Join(bootnodes, ","),
"Ethstats": config.node.ethstats,
"EthPort": config.node.port,
})
files[filepath.Join(workdir, "Dockerfile")] = dockerfile.Bytes()
transformer := "base"
if isClique {
transformer = "clique"
}
composefile := new(bytes.Buffer)
template.Must(template.New("").Parse(explorerComposefile)).Execute(composefile, map[string]interface{}{
"Network": network,
"VHost": config.host,
"Ethstats": config.node.ethstats,
"Datadir": config.node.datadir,
"DBDir": config.dbdir,
"EthPort": config.node.port,
"EthName": config.node.ethstats[:strings.Index(config.node.ethstats, ":")],
"WebPort": config.port,
"Transformer": transformer,
})
files[filepath.Join(workdir, "docker-compose.yaml")] = composefile.Bytes()
files[filepath.Join(workdir, "genesis.json")] = config.node.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))
}
// explorerInfos is returned from a block explorer status check to allow reporting
// various configuration parameters.
type explorerInfos struct {
node *nodeInfos
dbdir string
host string
port 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 *explorerInfos) Report() map[string]string {
report := map[string]string{
"Website address ": info.host,
"Website listener port ": strconv.Itoa(info.port),
"Ethereum listener port ": strconv.Itoa(info.node.port),
"Ethstats username": info.node.ethstats,
}
return report
}
// checkExplorer does a health-check against a block explorer server to verify
// whether it's running, and if yes, whether it's responsive.
func checkExplorer(client *sshClient, network string) (*explorerInfos, error) {
// Inspect a possible explorer container on the host
infos, err := inspectContainer(client, fmt.Sprintf("%s_explorer_1", network))
if err != nil {
return nil, err
}
if !infos.running {
return nil, ErrServiceOffline
}
// Resolve the port from the host, or the reverse proxy
port := infos.portmap["4000/tcp"]
if port == 0 {
if proxy, _ := checkNginx(client, network); proxy != nil {
port = proxy.port
}
}
if port == 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 is reachable
p2pPort := infos.portmap[infos.envvars["ETH_PORT"]+"/tcp"]
if err = checkPort(host, p2pPort); err != nil {
log.Warn("Explorer node seems unreachable", "server", host, "port", p2pPort, "err", err)
}
if err = checkPort(host, port); err != nil {
log.Warn("Explorer service seems unreachable", "server", host, "port", port, "err", err)
}
// Assemble and return the useful infos
stats := &explorerInfos{
node: &nodeInfos{
datadir: infos.volumes["/opt/app/.ethereum"],
port: infos.portmap[infos.envvars["ETH_PORT"]+"/tcp"],
ethstats: infos.envvars["ETH_NAME"],
},
dbdir: infos.volumes["/var/lib/postgresql/data"],
host: host,
port: port,
}
return stats, nil
}
