status-go/cmd/statusd/main.go

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package main
import (
"context"
"errors"
"flag"
"fmt"
stdlog "log"
"os"
"os/signal"
"path/filepath"
"runtime"
"strings"
"time"
"github.com/ethereum/go-ethereum/log"
gethmetrics "github.com/ethereum/go-ethereum/metrics"
"github.com/okzk/sdnotify"
"github.com/status-im/status-go/api"
"github.com/status-im/status-go/logutils"
"github.com/status-im/status-go/metrics"
nodemetrics "github.com/status-im/status-go/metrics/node"
"github.com/status-im/status-go/node"
"github.com/status-im/status-go/params"
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"github.com/status-im/status-go/profiling"
"golang.org/x/crypto/ssh/terminal"
)
const (
serverClientName = "Statusd"
)
var (
buildStamp = "N/A" // rely on linker: -ldflags -X main.buildStamp"
)
var (
configFiles configFlags
logLevel = flag.String("log", "", `Log level, one of: "ERROR", "WARN", "INFO", "DEBUG", and "TRACE"`)
logWithoutColors = flag.Bool("log-without-color", false, "Disables log colors")
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ipcEnabled = flag.Bool("ipc", false, "Enable IPC RPC endpoint")
ipcFile = flag.String("ipcfile", "", "Set IPC file path")
pprofEnabled = flag.Bool("pprof", false, "Enable runtime profiling via pprof")
pprofPort = flag.Int("pprof-port", 52525, "Port for runtime profiling via pprof")
version = flag.Bool("version", false, "Print version and dump configuration")
dataDir = flag.String("dir", getDefaultDataDir(), "Directory used by node to store data")
register = flag.Bool("register", false, "Register and make the node discoverable by other nodes")
mailserver = flag.Bool("mailserver", false, "Enable Mail Server with default configuration")
networkID = flag.Int(
"network-id",
params.RopstenNetworkID,
fmt.Sprintf(
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"A network ID: %d (Mainnet), %d (Ropsten), %d (Rinkeby), %d (Goerli)",
params.MainNetworkID, params.RopstenNetworkID, params.RinkebyNetworkID, params.GoerliNetworkID,
),
)
// don't change the name of this flag, https://github.com/ethereum/go-ethereum/blob/master/metrics/metrics.go#L41
metricsEnabled = flag.Bool("metrics", false, "Expose ethereum metrics with debug_metrics jsonrpc call")
metricsPort = flag.Int("metrics-port", 9305, "Port for the Prometheus /metrics endpoint")
syncAndExit = flag.Int("sync-and-exit", -1, "Timeout in minutes for blockchain sync and exit, zero means no timeout unless sync is finished")
)
// All general log messages in this package should be routed through this logger.
var logger = log.New("package", "status-go/cmd/statusd")
func init() {
flag.Var(&configFiles, "c", "JSON configuration file(s). Multiple configuration files can be specified, and will be merged in occurrence order")
}
// nolint:gocyclo
func main() {
colors := terminal.IsTerminal(int(os.Stdin.Fd()))
if err := logutils.OverrideRootLog(true, "ERROR", logutils.FileOptions{}, colors); err != nil {
stdlog.Fatalf("Error initializing logger: %v", err)
}
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flag.Usage = printUsage
flag.Parse()
if flag.NArg() > 0 {
printUsage()
logger.Error("Extra args in command line: %v", flag.Args())
os.Exit(1)
}
opts := []params.Option{params.WithFleet(params.FleetBeta)}
if *mailserver {
opts = append(opts, params.WithMailserver())
}
config, err := params.NewNodeConfigWithDefaultsAndFiles(
*dataDir,
uint64(*networkID),
opts,
configFiles,
)
if err != nil {
printUsage()
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logger.Error(err.Error())
os.Exit(1)
}
if *register && *mailserver {
config.RegisterTopics = append(config.RegisterTopics, params.MailServerDiscv5Topic)
} else if *register {
config.RegisterTopics = append(config.RegisterTopics, params.WhisperDiscv5Topic)
}
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// enable IPC RPC
if *ipcEnabled {
config.IPCEnabled = true
config.IPCFile = *ipcFile
}
// set up logging options
setupLogging(config)
// We want statusd to be distinct from StatusIM client.
config.Name = serverClientName
if *version {
printVersion(config, buildStamp)
return
}
backend := api.NewGethStatusBackend()
err = backend.AccountManager().InitKeystore(config.KeyStoreDir)
if err != nil {
logger.Error("Failed to init keystore", "error", err)
return
}
err = backend.StartNode(config)
if err != nil {
logger.Error("Node start failed", "error", err)
return
}
err = sdnotify.Ready()
if err == sdnotify.ErrSdNotifyNoSocket {
logger.Debug("sd_notify socket not available")
} else if err != nil {
logger.Warn("sd_notify READY call failed", "error", err)
} else {
// systemd aliveness notifications, affects only Linux
go startSystemDWatchdog()
}
// handle interrupt signals
interruptCh := haltOnInterruptSignal(backend.StatusNode())
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// Start collecting metrics. Metrics can be enabled by providing `-metrics` flag
// or setting `gethmetrics.Enabled` to true during compilation time:
// https://github.com/status-im/go-ethereum/pull/76.
if *metricsEnabled || gethmetrics.Enabled {
go startCollectingNodeMetrics(interruptCh, backend.StatusNode())
go gethmetrics.CollectProcessMetrics(3 * time.Second)
go metrics.NewMetricsServer(*metricsPort, gethmetrics.DefaultRegistry).Listen()
}
// Check if profiling shall be enabled.
if *pprofEnabled {
profiling.NewProfiler(*pprofPort).Go()
}
// Sync blockchain and stop.
if *syncAndExit >= 0 {
exitCode := syncAndStopNode(interruptCh, backend.StatusNode(), *syncAndExit)
// Call was interrupted. Wait for graceful shutdown.
if exitCode == -1 {
if gethNode := backend.StatusNode().GethNode(); gethNode != nil {
gethNode.Wait()
}
return
}
// Otherwise, exit immediately with a returned exit code.
os.Exit(exitCode)
}
gethNode := backend.StatusNode().GethNode()
if gethNode != nil {
// wait till node has been stopped
gethNode.Wait()
if err := sdnotify.Stopping(); err != nil {
logger.Warn("sd_notify STOPPING call failed", "error", err)
}
}
}
func getDefaultDataDir() string {
if home := os.Getenv("HOME"); home != "" {
return filepath.Join(home, ".statusd")
}
return "./statusd-data"
}
func setupLogging(config *params.NodeConfig) {
if *logLevel != "" {
config.LogLevel = *logLevel
}
colors := !(*logWithoutColors) && terminal.IsTerminal(int(os.Stdin.Fd()))
if err := logutils.OverrideRootLogWithConfig(config, colors); err != nil {
stdlog.Fatalf("Error initializing logger: %v", err)
}
}
// loop for notifying systemd about process being alive
func startSystemDWatchdog() {
for range time.Tick(30 * time.Second) {
if err := sdnotify.Watchdog(); err != nil {
logger.Warn("sd_notify WATCHDOG call failed", "error", err)
}
}
}
// startCollectingStats collects various stats about the node and other protocols like Whisper.
func startCollectingNodeMetrics(interruptCh <-chan struct{}, statusNode *node.StatusNode) {
logger.Info("Starting collecting node metrics")
gethNode := statusNode.GethNode()
if gethNode == nil {
logger.Error("Failed to run metrics because it could not get the node")
return
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
go func() {
// Try to subscribe and collect metrics. In case of an error, retry.
for {
if err := nodemetrics.SubscribeServerEvents(ctx, gethNode); err != nil {
logger.Error("Failed to subscribe server events", "error", err)
} else {
// no error means that the subscription was terminated by purpose
return
}
time.Sleep(time.Second)
}
}()
<-interruptCh
}
var (
errStatusServiceRequiresIPC = errors.New("to enable the StatusService on IPC, -ipc flag must be set")
errStatusServiceRequiresHTTP = errors.New("to enable the StatusService on HTTP, -http flag must be set")
errStatusServiceInvalidFlag = errors.New("-status flag valid values are: ipc, http")
)
func configureStatusService(flagValue string, nodeConfig *params.NodeConfig) (*params.NodeConfig, error) {
switch flagValue {
case "ipc":
if !nodeConfig.IPCEnabled {
return nil, errStatusServiceRequiresIPC
}
nodeConfig.EnableStatusService = true
case "http":
if !nodeConfig.HTTPEnabled {
return nil, errStatusServiceRequiresHTTP
}
nodeConfig.EnableStatusService = true
nodeConfig.AddAPIModule("status")
case "":
nodeConfig.EnableStatusService = false
default:
return nil, errStatusServiceInvalidFlag
}
return nodeConfig, nil
}
// printVersion prints verbose output about version and config.
func printVersion(config *params.NodeConfig, buildStamp string) {
fmt.Println(strings.Title(config.Name))
fmt.Println("Version:", config.Version)
if buildStamp != "" {
fmt.Println("Build Stamp:", buildStamp)
}
fmt.Println("Network Id:", config.NetworkID)
fmt.Println("Go Version:", runtime.Version())
fmt.Println("OS:", runtime.GOOS)
fmt.Printf("GOPATH=%s\n", os.Getenv("GOPATH"))
fmt.Printf("GOROOT=%s\n", runtime.GOROOT())
fmt.Println("Loaded Config: ", config)
}
func printUsage() {
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usage := `
Usage: statusd [options]
Examples:
statusd # run regular Whisper node that joins Status network
statusd -c ./default.json # run node with configuration specified in ./default.json file
statusd -c ./default.json -c ./standalone.json # run node with configuration specified in ./default.json file, after merging ./standalone.json file
statusd -c ./default.json -metrics # run node with configuration specified in ./default.json file, and expose ethereum metrics with debug_metrics jsonrpc call
Options:
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`
fmt.Fprint(os.Stderr, usage)
flag.PrintDefaults()
}
// haltOnInterruptSignal catches interrupt signal (SIGINT) and
// stops the node. It times out after 5 seconds
// if the node can not be stopped.
func haltOnInterruptSignal(statusNode *node.StatusNode) <-chan struct{} {
interruptCh := make(chan struct{})
go func() {
signalCh := make(chan os.Signal, 1)
signal.Notify(signalCh, os.Interrupt)
defer signal.Stop(signalCh)
<-signalCh
close(interruptCh)
logger.Info("Got interrupt, shutting down...")
if err := statusNode.Stop(); err != nil {
logger.Error("Failed to stop node", "error", err)
os.Exit(1)
}
}()
return interruptCh
}