package main import ( "crypto/ecdsa" "crypto/elliptic" "crypto/rand" "fmt" "io" "os" "strconv" "strings" "time" "github.com/nspcc-dev/neofs-api-go/refs" crypto "github.com/nspcc-dev/neofs-crypto" "github.com/spf13/pflag" "github.com/spf13/viper" "go.uber.org/zap" ) type empty int const ( devNull = empty(0) generated = "generated" minimumTTLInMinutes = 5 defaultTTL = minimumTTLInMinutes * time.Minute defaultRebalanceTimer = 15 * time.Second defaultRequestTimeout = 15 * time.Second defaultConnectTimeout = 30 * time.Second defaultKeepaliveTime = 10 * time.Second defaultKeepaliveTimeout = 10 * time.Second ) func (empty) Read([]byte) (int, error) { return 0, io.EOF } func fetchKey(l *zap.Logger, v *viper.Viper) *ecdsa.PrivateKey { switch val := v.GetString("key"); val { case generated: key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) if err != nil { l.Fatal("could not generate private key", zap.Error(err)) } id, err := refs.NewOwnerID(&key.PublicKey) l.Info("generate new key", zap.Stringer("key", id), zap.Error(err)) return key default: key, err := crypto.LoadPrivateKey(val) if err != nil { l.Fatal("could not load private key", zap.String("key", v.GetString("key")), zap.Error(err)) } return key } } func settings() *viper.Viper { v := viper.New() v.AutomaticEnv() v.SetEnvPrefix("GW") v.SetConfigType("yaml") v.SetEnvKeyReplacer(strings.NewReplacer(".", "_")) // flags setup: flags := pflag.NewFlagSet("commandline", pflag.ExitOnError) flags.SortFlags = false flags.Bool("pprof", false, "enable pprof") flags.Bool("metrics", false, "enable prometheus") help := flags.BoolP("help", "h", false, "show help") version := flags.BoolP("version", "v", false, "show version") flags.String("key", generated, `"`+generated+`" to generate key, path to private key file, hex string or wif`) flags.Bool("verbose", false, "debug gRPC connections") flags.Duration("request_timeout", defaultRequestTimeout, "gRPC request timeout") flags.Duration("connect_timeout", defaultConnectTimeout, "gRPC connect timeout") flags.Duration("rebalance_timer", defaultRebalanceTimer, "gRPC connection rebalance timer") ttl := flags.DurationP("conn_ttl", "t", defaultTTL, "gRPC connection time to live") flags.String("listen_address", "0.0.0.0:8082", "HTTP Gateway listen address") peers := flags.StringArrayP("peers", "p", nil, "NeoFS nodes") // set prefers: v.Set("app.name", "neofs-gw") v.Set("app.version", Version) // set defaults: // logger: v.SetDefault("logger.level", "debug") v.SetDefault("logger.format", "console") v.SetDefault("logger.trace_level", "fatal") v.SetDefault("logger.no_disclaimer", true) v.SetDefault("logger.sampling.initial", 1000) v.SetDefault("logger.sampling.thereafter", 1000) // keepalive: // If set below 10s, a minimum value of 10s will be used instead. v.SetDefault("keepalive.time", defaultKeepaliveTime) v.SetDefault("keepalive.timeout", defaultKeepaliveTimeout) v.SetDefault("keepalive.permit_without_stream", true) if err := v.BindPFlags(flags); err != nil { panic(err) } if err := v.ReadConfig(devNull); err != nil { panic(err) } if err := flags.Parse(os.Args); err != nil { panic(err) } switch { case help != nil && *help: fmt.Printf("NeoFS HTTP Gateway %s (%s)\n", Version, Build) flags.PrintDefaults() os.Exit(0) case version != nil && *version: fmt.Printf("NeoFS HTTP Gateway %s (%s)\n", Version, Build) os.Exit(0) case ttl != nil && ttl.Minutes() < minimumTTLInMinutes: fmt.Printf("connection ttl should not be less than %s", defaultTTL) } if peers != nil && len(*peers) > 0 { for i := range *peers { v.SetDefault("peers."+strconv.Itoa(i)+".address", (*peers)[i]) v.SetDefault("peers."+strconv.Itoa(i)+".weight", 1) } } return v }