195 lines
7.1 KiB
Go
195 lines
7.1 KiB
Go
// Copyright 2017 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"bytes"
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"fmt"
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"html/template"
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"math/rand"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/ethereum/go-ethereum/log"
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)
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// explorerDockerfile is the Dockerfile required to run a block explorer.
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var explorerDockerfile = `
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FROM puppeth/blockscout:latest
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ADD genesis.json /genesis.json
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RUN \
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echo 'geth --cache 512 init /genesis.json' > explorer.sh && \
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echo $'geth --networkid {{.NetworkID}} --syncmode "full" --gcmode "archive" --port {{.EthPort}} --bootnodes {{.Bootnodes}} --ethstats \'{{.Ethstats}}\' --cache=512 --http --http.api "net,web3,eth,debug,txpool" --http.corsdomain "*" --http.vhosts "*" --ws --ws.origins "*" --exitwhensynced' >> explorer.sh && \
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echo $'exec geth --networkid {{.NetworkID}} --syncmode "full" --gcmode "archive" --port {{.EthPort}} --bootnodes {{.Bootnodes}} --ethstats \'{{.Ethstats}}\' --cache=512 --http --http.api "net,web3,eth,debug,txpool" --http.corsdomain "*" --http.vhosts "*" --ws --ws.origins "*" &' >> explorer.sh && \
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echo '/usr/local/bin/docker-entrypoint.sh postgres &' >> explorer.sh && \
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echo 'sleep 5' >> explorer.sh && \
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echo 'mix do ecto.drop --force, ecto.create, ecto.migrate' >> explorer.sh && \
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echo 'mix phx.server' >> explorer.sh
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ENTRYPOINT ["/bin/sh", "explorer.sh"]
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`
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// explorerComposefile is the docker-compose.yml file required to deploy and
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// maintain a block explorer.
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var explorerComposefile = `
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version: '2'
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services:
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explorer:
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build: .
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image: {{.Network}}/explorer
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container_name: {{.Network}}_explorer_1
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ports:
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- "{{.EthPort}}:{{.EthPort}}"
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- "{{.EthPort}}:{{.EthPort}}/udp"{{if not .VHost}}
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- "{{.WebPort}}:4000"{{end}}
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environment:
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- ETH_PORT={{.EthPort}}
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- ETH_NAME={{.EthName}}
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- BLOCK_TRANSFORMER={{.Transformer}}{{if .VHost}}
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- VIRTUAL_HOST={{.VHost}}
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- VIRTUAL_PORT=4000{{end}}
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volumes:
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- {{.Datadir}}:/opt/app/.ethereum
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- {{.DBDir}}:/var/lib/postgresql/data
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logging:
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driver: "json-file"
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options:
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max-size: "1m"
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max-file: "10"
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restart: always
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`
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// deployExplorer deploys a new block explorer container to a remote machine via
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// SSH, docker and docker-compose. If an instance with the specified network name
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// already exists there, it will be overwritten!
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func deployExplorer(client *sshClient, network string, bootnodes []string, config *explorerInfos, nocache bool, isClique bool) ([]byte, error) {
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// Generate the content to upload to the server
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workdir := fmt.Sprintf("%d", rand.Int63())
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files := make(map[string][]byte)
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dockerfile := new(bytes.Buffer)
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template.Must(template.New("").Parse(explorerDockerfile)).Execute(dockerfile, map[string]interface{}{
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"NetworkID": config.node.network,
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"Bootnodes": strings.Join(bootnodes, ","),
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"Ethstats": config.node.ethstats,
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"EthPort": config.node.port,
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})
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files[filepath.Join(workdir, "Dockerfile")] = dockerfile.Bytes()
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transformer := "base"
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if isClique {
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transformer = "clique"
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}
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composefile := new(bytes.Buffer)
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template.Must(template.New("").Parse(explorerComposefile)).Execute(composefile, map[string]interface{}{
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"Network": network,
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"VHost": config.host,
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"Ethstats": config.node.ethstats,
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"Datadir": config.node.datadir,
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"DBDir": config.dbdir,
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"EthPort": config.node.port,
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"EthName": config.node.ethstats[:strings.Index(config.node.ethstats, ":")],
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"WebPort": config.port,
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"Transformer": transformer,
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})
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files[filepath.Join(workdir, "docker-compose.yaml")] = composefile.Bytes()
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files[filepath.Join(workdir, "genesis.json")] = config.node.genesis
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// Upload the deployment files to the remote server (and clean up afterwards)
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if out, err := client.Upload(files); err != nil {
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return out, err
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}
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defer client.Run("rm -rf " + workdir)
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// Build and deploy the boot or seal node service
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if nocache {
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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))
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}
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return nil, client.Stream(fmt.Sprintf("cd %s && docker-compose -p %s up -d --build --force-recreate --timeout 60", workdir, network))
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}
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// explorerInfos is returned from a block explorer status check to allow reporting
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// various configuration parameters.
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type explorerInfos struct {
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node *nodeInfos
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dbdir string
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host string
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port int
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}
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// Report converts the typed struct into a plain string->string map, containing
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// most - but not all - fields for reporting to the user.
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func (info *explorerInfos) Report() map[string]string {
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report := map[string]string{
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"Website address ": info.host,
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"Website listener port ": strconv.Itoa(info.port),
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"Ethereum listener port ": strconv.Itoa(info.node.port),
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"Ethstats username": info.node.ethstats,
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}
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return report
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}
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// checkExplorer does a health-check against a block explorer server to verify
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// whether it's running, and if yes, whether it's responsive.
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func checkExplorer(client *sshClient, network string) (*explorerInfos, error) {
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// Inspect a possible explorer container on the host
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infos, err := inspectContainer(client, fmt.Sprintf("%s_explorer_1", network))
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if err != nil {
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return nil, err
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}
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if !infos.running {
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return nil, ErrServiceOffline
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}
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// Resolve the port from the host, or the reverse proxy
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port := infos.portmap["4000/tcp"]
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if port == 0 {
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if proxy, _ := checkNginx(client, network); proxy != nil {
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port = proxy.port
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}
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}
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if port == 0 {
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return nil, ErrNotExposed
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}
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// Resolve the host from the reverse-proxy and the config values
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host := infos.envvars["VIRTUAL_HOST"]
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if host == "" {
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host = client.server
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}
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// Run a sanity check to see if the devp2p is reachable
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p2pPort := infos.portmap[infos.envvars["ETH_PORT"]+"/tcp"]
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if err = checkPort(host, p2pPort); err != nil {
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log.Warn("Explorer node seems unreachable", "server", host, "port", p2pPort, "err", err)
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}
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if err = checkPort(host, port); err != nil {
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log.Warn("Explorer service seems unreachable", "server", host, "port", port, "err", err)
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}
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// Assemble and return the useful infos
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stats := &explorerInfos{
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node: &nodeInfos{
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datadir: infos.volumes["/opt/app/.ethereum"],
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port: infos.portmap[infos.envvars["ETH_PORT"]+"/tcp"],
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ethstats: infos.envvars["ETH_NAME"],
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},
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dbdir: infos.volumes["/var/lib/postgresql/data"],
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host: host,
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port: port,
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}
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return stats, nil
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}
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