package main import ( "fmt" "os" "runtime" "sort" "strconv" "strings" "time" "github.com/nspcc-dev/neofs-s3-gw/api/resolver" "github.com/nspcc-dev/neofs-s3-gw/internal/version" "github.com/nspcc-dev/neofs-sdk-go/pool" "github.com/spf13/pflag" "github.com/spf13/viper" "go.uber.org/zap" ) const ( defaultRebalanceInterval = 15 * time.Second defaultHealthcheckTimeout = 15 * time.Second defaultConnectTimeout = 30 * time.Second defaultShutdownTimeout = 15 * time.Second defaultMaxClientsCount = 100 defaultMaxClientsDeadline = time.Second * 30 ) const ( // Settings. // Logger. cfgLoggerLevel = "logger.level" // Wallet. cfgWallet = "wallet" cfgAddress = "address" cfgWalletPassphrase = "wallet.passphrase" // HTTPS/TLS. cfgTLSKeyFile = "tls.key_file" cfgTLSCertFile = "tls.cert_file" // Timeouts. cfgConnectTimeout = "connect_timeout" cfgHealthcheckTimeout = "healthcheck_timeout" cfgRebalanceInterval = "rebalance_interval" // Caching. cfgObjectsCacheLifetime = "cache.objects.lifetime" cfgObjectsCacheSize = "cache.objects.size" cfgListObjectsCacheLifetime = "cache.list.lifetime" cfgListObjectsCacheSize = "cache.list.size" cfgBucketsCacheLifetime = "cache.buckets.lifetime" cfgBucketsCacheSize = "cache.buckets.size" cfgNamesCacheLifetime = "cache.names.lifetime" cfgNamesCacheSize = "cache.names.size" cfgSystemLifetimeSize = "cache.system.lifetime" cfgSystemCacheSize = "cache.system.size" cfgAccessBoxCacheLifetime = "cache.accessbox.lifetime" cfgAccessBoxCacheSize = "cache.accessbox.size" // NATS. cfgEnableNATS = "nats.enabled" cfgNATSEndpoint = "nats.endpoint" cfgNATSTimeout = "nats.timeout" cfgNATSTLSCertFile = "nats.cert_file" cfgNATSAuthPrivateKeyFile = "nats.key_file" cfgNATSRootCAFiles = "nats.root_ca" // Policy. cfgDefaultPolicy = "default_policy" // CORS. cfgDefaultMaxAge = "cors.default_max_age" // MaxClients. cfgMaxClientsCount = "max_clients_count" cfgMaxClientsDeadline = "max_clients_deadline" // Metrics / Profiler / Web. cfgEnableMetrics = "metrics" cfgEnableProfiler = "pprof" cfgListenAddress = "listen_address" cfgListenDomains = "listen_domains" // Peers. cfgPeers = "peers" cfgTreeServiceEndpoint = "tree.service" // NeoGo. cfgRPCEndpoint = "rpc_endpoint" // Resolving. cfgResolveOrder = "resolve_order" // Application. cfgApplicationBuildTime = "app.build_time" // Command line args. cmdHelp = "help" cmdVersion = "version" cmdConfig = "config" // envPrefix is an environment variables prefix used for configuration. envPrefix = "S3_GW" ) var ignore = map[string]struct{}{ cfgApplicationBuildTime: {}, cfgPeers: {}, cmdHelp: {}, cmdVersion: {}, } func fetchPeers(l *zap.Logger, v *viper.Viper) []pool.NodeParam { var nodes []pool.NodeParam for i := 0; ; i++ { key := cfgPeers + "." + strconv.Itoa(i) + "." address := v.GetString(key + "address") weight := v.GetFloat64(key + "weight") priority := v.GetInt(key + "priority") if address == "" { l.Warn("skip, empty address") break } if weight <= 0 { // unspecified or wrong weight = 1 } if priority <= 0 { // unspecified or wrong priority = 1 } nodes = append(nodes, pool.NewNodeParam(priority, address, weight)) l.Info("added connection peer", zap.String("address", address), zap.Float64("weight", weight)) } return nodes } func fetchDomains(v *viper.Viper) []string { cnt := v.GetInt(cfgListenDomains + ".count") res := make([]string, 0, cnt) for i := 0; ; i++ { domain := v.GetString(cfgListenDomains + "." + strconv.Itoa(i)) if domain == "" { break } res = append(res, domain) } return res } func newSettings() *viper.Viper { v := viper.New() v.AutomaticEnv() v.SetEnvPrefix(envPrefix) v.SetConfigType("yaml") v.SetEnvKeyReplacer(strings.NewReplacer(".", "_")) v.AllowEmptyEnv(true) // flags setup: flags := pflag.NewFlagSet("commandline", pflag.ExitOnError) flags.SetOutput(os.Stdout) flags.SortFlags = false flags.Bool(cfgEnableProfiler, false, "enable pprof") flags.Bool(cfgEnableMetrics, false, "enable prometheus metrics") help := flags.BoolP(cmdHelp, "h", false, "show help") versionFlag := flags.BoolP(cmdVersion, "v", false, "show version") flags.StringP(cfgWallet, "w", "", `path to the wallet`) flags.String(cfgAddress, "", `address of wallet account`) config := flags.String(cmdConfig, "", "config path") flags.Duration(cfgHealthcheckTimeout, defaultHealthcheckTimeout, "set timeout to check node health during rebalance") flags.Duration(cfgConnectTimeout, defaultConnectTimeout, "set timeout to connect to NeoFS nodes") flags.Duration(cfgRebalanceInterval, defaultRebalanceInterval, "set rebalance interval") flags.Int(cfgMaxClientsCount, defaultMaxClientsCount, "set max-clients count") flags.Duration(cfgMaxClientsDeadline, defaultMaxClientsDeadline, "set max-clients deadline") flags.String(cfgListenAddress, "0.0.0.0:8080", "set address to listen") flags.String(cfgTLSCertFile, "", "TLS certificate file to use") flags.String(cfgTLSKeyFile, "", "TLS key file to use") peers := flags.StringArrayP(cfgPeers, "p", nil, "set NeoFS nodes") flags.StringP(cfgRPCEndpoint, "r", "", "set RPC endpoint") resolveMethods := flags.StringSlice(cfgResolveOrder, []string{resolver.DNSResolver}, "set bucket name resolve order") domains := flags.StringArrayP(cfgListenDomains, "d", nil, "set domains to be listened") // set defaults: // logger: v.SetDefault(cfgLoggerLevel, "debug") if err := v.BindPFlags(flags); err != nil { panic(err) } if err := flags.Parse(os.Args); err != nil { panic(err) } if resolveMethods != nil { v.SetDefault(cfgResolveOrder, *resolveMethods) } if peers != nil && len(*peers) > 0 { for i := range *peers { v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".address", (*peers)[i]) v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".weight", 1) } } if domains != nil && len(*domains) > 0 { for i := range *domains { v.SetDefault(cfgListenDomains+"."+strconv.Itoa(i), (*domains)[i]) } v.SetDefault(cfgListenDomains+".count", len(*domains)) } switch { case help != nil && *help: fmt.Printf("NeoFS S3 gateway %s\n", version.Version) flags.PrintDefaults() fmt.Println() fmt.Println("Default environments:") fmt.Println() keys := v.AllKeys() sort.Strings(keys) for i := range keys { if _, ok := ignore[keys[i]]; ok { continue } k := strings.Replace(keys[i], ".", "_", -1) fmt.Printf("%s_%s = %v\n", envPrefix, strings.ToUpper(k), v.Get(keys[i])) } fmt.Println() fmt.Println("Peers preset:") fmt.Println() fmt.Printf("%s_%s_[N]_ADDRESS = string\n", envPrefix, strings.ToUpper(cfgPeers)) fmt.Printf("%s_%s_[N]_WEIGHT = 0..1 (float)\n", envPrefix, strings.ToUpper(cfgPeers)) os.Exit(0) case versionFlag != nil && *versionFlag: fmt.Printf("NeoFS S3 Gateway\nVersion: %s\nGoVersion: %s\n", version.Version, runtime.Version()) os.Exit(0) } if v.IsSet(cmdConfig) { if cfgFile, err := os.Open(*config); err != nil { panic(err) } else if err := v.ReadConfig(cfgFile); err != nil { panic(err) } } return v }