2017-04-10 16:25:53 -07:00
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// 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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"encoding/json"
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"fmt"
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"os"
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"strings"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/log"
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"github.com/olekukonko/tablewriter"
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)
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// networkStats verifies the status of network components and generates a protip
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// configuration set to give users hints on how to do various tasks.
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func (w *wizard) networkStats(tips bool) {
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if len(w.servers) == 0 {
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log.Error("No remote machines to gather stats from")
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return
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}
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protips := new(protips)
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// Iterate over all the specified hosts and check their status
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stats := tablewriter.NewWriter(os.Stdout)
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stats.SetHeader([]string{"Server", "IP", "Status", "Service", "Details"})
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2017-05-12 17:03:56 -07:00
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stats.SetColWidth(100)
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2017-04-10 16:25:53 -07:00
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2017-05-03 00:09:34 -07:00
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for server, pubkey := range w.conf.Servers {
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2017-04-10 16:25:53 -07:00
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client := w.servers[server]
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logger := log.New("server", server)
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logger.Info("Starting remote server health-check")
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// If the server is not connected, try to connect again
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if client == nil {
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2017-05-03 00:09:34 -07:00
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conn, err := dial(server, pubkey)
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2017-04-10 16:25:53 -07:00
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if err != nil {
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logger.Error("Failed to establish remote connection", "err", err)
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stats.Append([]string{server, "", err.Error(), "", ""})
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continue
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}
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client = conn
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}
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// Client connected one way or another, run health-checks
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services := make(map[string]string)
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logger.Debug("Checking for nginx availability")
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if infos, err := checkNginx(client, w.network); err != nil {
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if err != ErrServiceUnknown {
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services["nginx"] = err.Error()
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}
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} else {
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services["nginx"] = infos.String()
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}
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logger.Debug("Checking for ethstats availability")
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if infos, err := checkEthstats(client, w.network); err != nil {
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if err != ErrServiceUnknown {
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services["ethstats"] = err.Error()
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}
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} else {
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services["ethstats"] = infos.String()
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protips.ethstats = infos.config
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}
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logger.Debug("Checking for bootnode availability")
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if infos, err := checkNode(client, w.network, true); err != nil {
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if err != ErrServiceUnknown {
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services["bootnode"] = err.Error()
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}
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} else {
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services["bootnode"] = infos.String()
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protips.genesis = string(infos.genesis)
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protips.bootFull = append(protips.bootFull, infos.enodeFull)
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if infos.enodeLight != "" {
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protips.bootLight = append(protips.bootLight, infos.enodeLight)
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}
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}
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logger.Debug("Checking for sealnode availability")
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if infos, err := checkNode(client, w.network, false); err != nil {
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if err != ErrServiceUnknown {
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services["sealnode"] = err.Error()
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}
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} else {
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services["sealnode"] = infos.String()
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protips.genesis = string(infos.genesis)
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}
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logger.Debug("Checking for faucet availability")
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if infos, err := checkFaucet(client, w.network); err != nil {
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if err != ErrServiceUnknown {
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services["faucet"] = err.Error()
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}
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} else {
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services["faucet"] = infos.String()
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}
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logger.Debug("Checking for dashboard availability")
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if infos, err := checkDashboard(client, w.network); err != nil {
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if err != ErrServiceUnknown {
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services["dashboard"] = err.Error()
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}
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} else {
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services["dashboard"] = infos.String()
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}
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// All status checks complete, report and check next server
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delete(w.services, server)
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for service := range services {
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w.services[server] = append(w.services[server], service)
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}
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server, address := client.server, client.address
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for service, status := range services {
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stats.Append([]string{server, address, "online", service, status})
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server, address = "", ""
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}
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if len(services) == 0 {
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stats.Append([]string{server, address, "online", "", ""})
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}
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}
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// If a genesis block was found, load it into our configs
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if protips.genesis != "" {
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genesis := new(core.Genesis)
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if err := json.Unmarshal([]byte(protips.genesis), genesis); err != nil {
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log.Error("Failed to parse remote genesis", "err", err)
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} else {
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w.conf.genesis = genesis
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protips.network = genesis.Config.ChainId.Int64()
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}
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}
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if protips.ethstats != "" {
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w.conf.ethstats = protips.ethstats
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}
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w.conf.bootFull = protips.bootFull
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w.conf.bootLight = protips.bootLight
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// Print any collected stats and return
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if !tips {
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stats.Render()
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} else {
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protips.print(w.network)
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}
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}
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// protips contains a collection of network infos to report pro-tips
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// based on.
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type protips struct {
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genesis string
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network int64
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bootFull []string
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bootLight []string
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ethstats string
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}
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// print analyzes the network information available and prints a collection of
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// pro tips for the user's consideration.
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func (p *protips) print(network string) {
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// If a known genesis block is available, display it and prepend an init command
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fullinit, lightinit := "", ""
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if p.genesis != "" {
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fullinit = fmt.Sprintf("geth --datadir=$HOME/.%s init %s.json && ", network, network)
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lightinit = fmt.Sprintf("geth --datadir=$HOME/.%s --light init %s.json && ", network, network)
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}
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// If an ethstats server is available, add the ethstats flag
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statsflag := ""
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if p.ethstats != "" {
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if strings.Contains(p.ethstats, " ") {
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statsflag = fmt.Sprintf(` --ethstats="yournode:%s"`, p.ethstats)
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} else {
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statsflag = fmt.Sprintf(` --ethstats=yournode:%s`, p.ethstats)
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}
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}
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// If bootnodes have been specified, add the bootnode flag
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bootflagFull := ""
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if len(p.bootFull) > 0 {
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bootflagFull = fmt.Sprintf(` --bootnodes %s`, strings.Join(p.bootFull, ","))
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}
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bootflagLight := ""
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if len(p.bootLight) > 0 {
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bootflagLight = fmt.Sprintf(` --bootnodes %s`, strings.Join(p.bootLight, ","))
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}
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// Assemble all the known pro-tips
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var tasks, tips []string
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tasks = append(tasks, "Run an archive node with historical data")
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tips = append(tips, fmt.Sprintf("%sgeth --networkid=%d --datadir=$HOME/.%s --cache=1024%s%s", fullinit, p.network, network, statsflag, bootflagFull))
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tasks = append(tasks, "Run a full node with recent data only")
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tips = append(tips, fmt.Sprintf("%sgeth --networkid=%d --datadir=$HOME/.%s --cache=512 --fast%s%s", fullinit, p.network, network, statsflag, bootflagFull))
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tasks = append(tasks, "Run a light node with on demand retrievals")
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tips = append(tips, fmt.Sprintf("%sgeth --networkid=%d --datadir=$HOME/.%s --light%s%s", lightinit, p.network, network, statsflag, bootflagLight))
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tasks = append(tasks, "Run an embedded node with constrained memory")
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tips = append(tips, fmt.Sprintf("%sgeth --networkid=%d --datadir=$HOME/.%s --cache=32 --light%s%s", lightinit, p.network, network, statsflag, bootflagLight))
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// If the tips are short, display in a table
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short := true
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for _, tip := range tips {
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if len(tip) > 100 {
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short = false
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break
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}
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}
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fmt.Println()
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if short {
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howto := tablewriter.NewWriter(os.Stdout)
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howto.SetHeader([]string{"Fun tasks for you", "Tips on how to"})
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howto.SetColWidth(100)
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for i := 0; i < len(tasks); i++ {
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howto.Append([]string{tasks[i], tips[i]})
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}
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howto.Render()
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return
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}
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// Meh, tips got ugly, split into many lines
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for i := 0; i < len(tasks); i++ {
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fmt.Println(tasks[i])
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fmt.Println(strings.Repeat("-", len(tasks[i])))
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fmt.Println(tips[i])
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fmt.Println()
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fmt.Println()
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}
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}
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