frostfs-node/cmd/neofs-ir/main.go

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package main
import (
"flag"
"fmt"
"net/http"
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"os"
"strings"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neofs-node/misc"
"github.com/nspcc-dev/neofs-node/pkg/innerring"
"github.com/nspcc-dev/neofs-node/pkg/util/grace"
httputil "github.com/nspcc-dev/neofs-node/pkg/util/http"
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"github.com/nspcc-dev/neofs-node/pkg/util/logger"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/spf13/viper"
"go.uber.org/zap"
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)
const (
// ErrorReturnCode returns when application crashed at initialization stage
ErrorReturnCode = 1
// SuccessReturnCode returns when application closed without panic
SuccessReturnCode = 0
)
func exitErr(err error) {
if err != nil {
fmt.Println(err)
os.Exit(ErrorReturnCode)
}
}
func main() {
configFile := flag.String("config", "", "path to config")
validators := flag.String("vote", "", "hex encoded public keys split with comma")
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versionFlag := flag.Bool("version", false, "neofs-ir node version")
flag.Parse()
if *versionFlag {
fmt.Println("version:", misc.Version)
os.Exit(SuccessReturnCode)
}
cfg, err := newConfig(*configFile)
exitErr(err)
var logPrm logger.Prm
err = logPrm.SetLevelString(
cfg.GetString("logger.level"),
)
exitErr(err)
log, err := logger.NewLogger(logPrm)
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exitErr(err)
ctx := grace.NewGracefulContext(log)
intErr := make(chan error) // internal inner ring errors
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httpServers := initHTTPServers(cfg)
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innerRing, err := innerring.New(ctx, log, cfg)
if err != nil {
exitErr(err)
}
if len(*validators) != 0 {
validatorKeys, err := parsePublicKeysFromString(*validators)
exitErr(err)
err = innerRing.InitAndVoteForSidechainValidator(validatorKeys)
exitErr(err)
return
}
// start HTTP servers
for i := range httpServers {
srv := httpServers[i]
go func() {
exitErr(srv.Serve())
}()
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}
// start inner ring
err = innerRing.Start(ctx, intErr)
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if err != nil {
exitErr(err)
}
log.Info("application started",
zap.String("build time", misc.Build),
zap.String("version", misc.Version),
zap.String("debug", misc.Debug),
)
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select {
case <-ctx.Done():
case err := <-intErr:
// todo: restart application instead of shutdown
log.Info("internal error", zap.String("msg", err.Error()))
}
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innerRing.Stop()
// shut down HTTP servers
for i := range httpServers {
srv := httpServers[i]
go func() {
err := srv.Shutdown()
if err != nil {
log.Debug("could not shutdown HTTP server",
zap.String("error", err.Error()),
)
}
}()
}
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log.Info("application stopped")
}
func parsePublicKeysFromString(argument string) (keys.PublicKeys, error) {
publicKeysString := strings.Split(argument, ",")
return innerring.ParsePublicKeysFromStrings(publicKeysString)
}
func initHTTPServers(cfg *viper.Viper) []*httputil.Server {
var httpServers []*httputil.Server
for _, item := range []struct {
cfgPrefix string
handler func() http.Handler
}{
{"profiler", httputil.Handler},
{"metrics", promhttp.Handler},
} {
addr := cfg.GetString(item.cfgPrefix + ".address")
if addr == "" {
continue
}
var prm httputil.Prm
prm.Address = addr
prm.Handler = item.handler()
httpServers = append(httpServers,
httputil.New(prm,
httputil.WithShutdownTimeout(
cfg.GetDuration(item.cfgPrefix+".shutdown_timeout"),
),
),
)
}
return httpServers
}