add config hot reload

cmd/gost/config.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"encoding/json"
+	"os"
 	"strings"
 
 	"github.com/go-gost/core/auth"
@@ -9,6 +11,7 @@ import (
 	"github.com/go-gost/x/api"
 	xauth "github.com/go-gost/x/auth"
 	"github.com/go-gost/x/config"
+	"github.com/go-gost/x/config/cmd"
 	admission_parser "github.com/go-gost/x/config/parsing/admission"
 	auth_parser "github.com/go-gost/x/config/parsing/auth"
 	bypass_parser "github.com/go-gost/x/config/parsing/bypass"
@@ -24,134 +27,352 @@ import (
 	router_parser "github.com/go-gost/x/config/parsing/router"
 	sd_parser "github.com/go-gost/x/config/parsing/sd"
 	service_parser "github.com/go-gost/x/config/parsing/service"
+	xmd "github.com/go-gost/x/metadata"
+	mdutil "github.com/go-gost/x/metadata/util"
 	metrics "github.com/go-gost/x/metrics/service"
 	"github.com/go-gost/x/registry"
 )
 
-func buildService(cfg *config.Config) (services []service.Service) {
+func parseConfig() (*config.Config, error) {
-	if cfg == nil {
+	cfg := &config.Config{}
-		return
+	if cfgFile != "" {
+		cfgFile = strings.TrimSpace(cfgFile)
+		if strings.HasPrefix(cfgFile, "{") && strings.HasSuffix(cfgFile, "}") {
+			if err := json.Unmarshal([]byte(cfgFile), cfg); err != nil {
+				return nil, err
+			}
+		} else {
+			if err := cfg.ReadFile(cfgFile); err != nil {
+				return nil, err
+			}
+		}
 	}
 
-	log := logger.Default()
+	cmdCfg, err := cmd.BuildConfigFromCmd(services, nodes)
+	if err != nil {
+		return nil, err
+	}
+	cfg = mergeConfig(cfg, cmdCfg)
 
+	if len(cfg.Services) == 0 && apiAddr == "" && cfg.API == nil {
+		if err := cfg.Load(); err != nil {
+			return nil, err
+		}
+	}
+
+	if v := os.Getenv("GOST_LOGGER_LEVEL"); v != "" {
+		cfg.Log = &config.LogConfig{
+			Level: v,
+		}
+	}
+	if v := os.Getenv("GOST_API"); v != "" {
+		cfg.API = &config.APIConfig{
+			Addr: v,
+		}
+	}
+	if v := os.Getenv("GOST_METRICS"); v != "" {
+		cfg.Metrics = &config.MetricsConfig{
+			Addr: v,
+		}
+	}
+	if v := os.Getenv("GOST_PROFILING"); v != "" {
+		cfg.Profiling = &config.ProfilingConfig{
+			Addr: v,
+		}
+	}
+
+	if debug || trace {
+		if cfg.Log == nil {
+			cfg.Log = &config.LogConfig{}
+		}
+
+		cfg.Log.Level = string(logger.DebugLevel)
+		if trace {
+			cfg.Log.Level = string(logger.TraceLevel)
+		}
+	}
+
+	if apiAddr != "" {
+		cfg.API = &config.APIConfig{
+			Addr: apiAddr,
+		}
+		if url, _ := cmd.Norm(apiAddr); url != nil {
+			cfg.API.Addr = url.Host
+			if url.User != nil {
+				username := url.User.Username()
+				password, _ := url.User.Password()
+				cfg.API.Auth = &config.AuthConfig{
+					Username: username,
+					Password: password,
+				}
+			}
+			m := map[string]any{}
+			for k, v := range url.Query() {
+				if len(v) > 0 {
+					m[k] = v[0]
+				}
+			}
+			md := xmd.NewMetadata(m)
+			cfg.API.PathPrefix = mdutil.GetString(md, "pathPrefix")
+			cfg.API.AccessLog = mdutil.GetBool(md, "accesslog")
+		}
+	}
+	if metricsAddr != "" {
+		cfg.Metrics = &config.MetricsConfig{
+			Addr: metricsAddr,
+		}
+		if url, _ := cmd.Norm(metricsAddr); url != nil {
+			cfg.Metrics.Addr = url.Host
+			if url.User != nil {
+				username := url.User.Username()
+				password, _ := url.User.Password()
+				cfg.Metrics.Auth = &config.AuthConfig{
+					Username: username,
+					Password: password,
+				}
+			}
+			m := map[string]any{}
+			for k, v := range url.Query() {
+				if len(v) > 0 {
+					m[k] = v[0]
+				}
+			}
+			md := xmd.NewMetadata(m)
+			cfg.Metrics.Path = mdutil.GetString(md, "path")
+		}
+	}
+
+	return cfg, nil
+}
+
+func mergeConfig(cfg1, cfg2 *config.Config) *config.Config {
+	if cfg1 == nil {
+		return cfg2
+	}
+	if cfg2 == nil {
+		return cfg1
+	}
+
+	cfg := &config.Config{
+		Services:   append(cfg1.Services, cfg2.Services...),
+		Chains:     append(cfg1.Chains, cfg2.Chains...),
+		Hops:       append(cfg1.Hops, cfg2.Hops...),
+		Authers:    append(cfg1.Authers, cfg2.Authers...),
+		Admissions: append(cfg1.Admissions, cfg2.Admissions...),
+		Bypasses:   append(cfg1.Bypasses, cfg2.Bypasses...),
+		Resolvers:  append(cfg1.Resolvers, cfg2.Resolvers...),
+		Hosts:      append(cfg1.Hosts, cfg2.Hosts...),
+		Ingresses:  append(cfg1.Ingresses, cfg2.Ingresses...),
+		SDs:        append(cfg1.SDs, cfg2.SDs...),
+		Recorders:  append(cfg1.Recorders, cfg2.Recorders...),
+		Limiters:   append(cfg1.Limiters, cfg2.Limiters...),
+		CLimiters:  append(cfg1.CLimiters, cfg2.CLimiters...),
+		RLimiters:  append(cfg1.RLimiters, cfg2.RLimiters...),
+		Loggers:    append(cfg1.Loggers, cfg2.Loggers...),
+		Routers:    append(cfg1.Routers, cfg2.Routers...),
+		Observers:  append(cfg1.Observers, cfg2.Observers...),
+		TLS:        cfg1.TLS,
+		Log:        cfg1.Log,
+		API:        cfg1.API,
+		Metrics:    cfg1.Metrics,
+		Profiling:  cfg1.Profiling,
+	}
+	if cfg2.TLS != nil {
+		cfg.TLS = cfg2.TLS
+	}
+	if cfg2.Log != nil {
+		cfg.Log = cfg2.Log
+	}
+	if cfg2.API != nil {
+		cfg.API = cfg2.API
+	}
+	if cfg2.Metrics != nil {
+		cfg.Metrics = cfg2.Metrics
+	}
+	if cfg2.Profiling != nil {
+		cfg.Profiling = cfg2.Profiling
+	}
+
+	return cfg
+}
+
+func register(cfg *config.Config) error {
+	if cfg == nil {
+		return nil
+	}
+
+	for name := range registry.LoggerRegistry().GetAll() {
+		registry.LoggerRegistry().Unregister(name)
+	}
 	for _, loggerCfg := range cfg.Loggers {
 		if err := registry.LoggerRegistry().Register(loggerCfg.Name, logger_parser.ParseLogger(loggerCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
 
+	for name := range registry.AutherRegistry().GetAll() {
+		registry.AutherRegistry().Unregister(name)
+	}
 	for _, autherCfg := range cfg.Authers {
 		if err := registry.AutherRegistry().Register(autherCfg.Name, auth_parser.ParseAuther(autherCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
 
+	for name := range registry.AdmissionRegistry().GetAll() {
+		registry.AdmissionRegistry().Unregister(name)
+	}
 	for _, admissionCfg := range cfg.Admissions {
 		if err := registry.AdmissionRegistry().Register(admissionCfg.Name, admission_parser.ParseAdmission(admissionCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
 
+	for name := range registry.BypassRegistry().GetAll() {
+		registry.BypassRegistry().Unregister(name)
+	}
 	for _, bypassCfg := range cfg.Bypasses {
 		if err := registry.BypassRegistry().Register(bypassCfg.Name, bypass_parser.ParseBypass(bypassCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
 
+	for name := range registry.ResolverRegistry().GetAll() {
+		registry.ResolverRegistry().Unregister(name)
+	}
 	for _, resolverCfg := range cfg.Resolvers {
 		r, err := resolver_parser.ParseResolver(resolverCfg)
 		if err != nil {
-			log.Fatal(err)
+			return err
 		}
 		if err := registry.ResolverRegistry().Register(resolverCfg.Name, r); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
 
+	for name := range registry.HostsRegistry().GetAll() {
+		registry.HostsRegistry().Unregister(name)
+	}
 	for _, hostsCfg := range cfg.Hosts {
 		if err := registry.HostsRegistry().Register(hostsCfg.Name, hosts_parser.ParseHostMapper(hostsCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
 
+	for name := range registry.IngressRegistry().GetAll() {
+		registry.IngressRegistry().Unregister(name)
+	}
 	for _, ingressCfg := range cfg.Ingresses {
 		if err := registry.IngressRegistry().Register(ingressCfg.Name, ingress_parser.ParseIngress(ingressCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
 
+	for name := range registry.RouterRegistry().GetAll() {
+		registry.RouterRegistry().Unregister(name)
+	}
 	for _, routerCfg := range cfg.Routers {
 		if err := registry.RouterRegistry().Register(routerCfg.Name, router_parser.ParseRouter(routerCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
 
+	for name := range registry.SDRegistry().GetAll() {
+		registry.SDRegistry().Unregister(name)
+	}
 	for _, sdCfg := range cfg.SDs {
 		if err := registry.SDRegistry().Register(sdCfg.Name, sd_parser.ParseSD(sdCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
 
+	for name := range registry.ObserverRegistry().GetAll() {
+		registry.ObserverRegistry().Unregister(name)
+	}
 	for _, observerCfg := range cfg.Observers {
 		if err := registry.ObserverRegistry().Register(observerCfg.Name, observer_parser.ParseObserver(observerCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
+
+	for name := range registry.RecorderRegistry().GetAll() {
+		registry.RecorderRegistry().Unregister(name)
+	}
 	for _, recorderCfg := range cfg.Recorders {
 		if err := registry.RecorderRegistry().Register(recorderCfg.Name, recorder_parser.ParseRecorder(recorderCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
 
+	for name := range registry.TrafficLimiterRegistry().GetAll() {
+		registry.TrafficLimiterRegistry().Unregister(name)
+	}
 	for _, limiterCfg := range cfg.Limiters {
 		if err := registry.TrafficLimiterRegistry().Register(limiterCfg.Name, limiter_parser.ParseTrafficLimiter(limiterCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
+
+	for name := range registry.ConnLimiterRegistry().GetAll() {
+		registry.ConnLimiterRegistry().Unregister(name)
+	}
 	for _, limiterCfg := range cfg.CLimiters {
 		if err := registry.ConnLimiterRegistry().Register(limiterCfg.Name, limiter_parser.ParseConnLimiter(limiterCfg)); err != nil {
-			log.Fatal(err)
+			return err
 		}
 	}
+
+	for name := range registry.RateLimiterRegistry().GetAll() {
+		registry.RateLimiterRegistry().Unregister(name)
+	}
 	for _, limiterCfg := range cfg.RLimiters {
 		if err := registry.RateLimiterRegistry().Register(limiterCfg.Name, limiter_parser.ParseRateLimiter(limiterCfg)); err != nil {
-			log.Fatal(err)
+			return err
-		}
-	}
-	for _, hopCfg := range cfg.Hops {
-		hop, err := hop_parser.ParseHop(hopCfg, log)
-		if err != nil {
-			log.Fatal(err)
-		}
-		if err := registry.HopRegistry().Register(hopCfg.Name, hop); err != nil {
-			log.Fatal(err)
-		}
-	}
-	for _, chainCfg := range cfg.Chains {
-		c, err := chain_parser.ParseChain(chainCfg, log)
-		if err != nil {
-			log.Fatal(err)
-		}
-		if err := registry.ChainRegistry().Register(chainCfg.Name, c); err != nil {
-			log.Fatal(err)
 		}
 	}
 
+	for name := range registry.HopRegistry().GetAll() {
+		registry.HopRegistry().Unregister(name)
+	}
+	for _, hopCfg := range cfg.Hops {
+		hop, err := hop_parser.ParseHop(hopCfg, logger.Default())
+		if err != nil {
+			return err
+		}
+		if err := registry.HopRegistry().Register(hopCfg.Name, hop); err != nil {
+			return err
+		}
+	}
+
+	for name := range registry.ChainRegistry().GetAll() {
+		registry.ChainRegistry().Unregister(name)
+	}
+	for _, chainCfg := range cfg.Chains {
+		c, err := chain_parser.ParseChain(chainCfg, logger.Default())
+		if err != nil {
+			return err
+		}
+		if err := registry.ChainRegistry().Register(chainCfg.Name, c); err != nil {
+			return err
+		}
+	}
+
+	for name := range registry.ServiceRegistry().GetAll() {
+		registry.ServiceRegistry().Unregister(name)
+	}
 	for _, svcCfg := range cfg.Services {
 		svc, err := service_parser.ParseService(svcCfg)
 		if err != nil {
-			log.Fatal(err)
+			return err
 		}
 		if svc != nil {
 			if err := registry.ServiceRegistry().Register(svcCfg.Name, svc); err != nil {
-				log.Fatal(err)
+				return err
 			}
 		}
-		services = append(services, svc)
 	}
 
-	return
+	return nil
 }
 
 func buildAPIService(cfg *config.APIConfig) (service.Service, error) {

cmd/gost/main.go

@@ -33,6 +33,7 @@ var (
 	services     stringList
 	nodes        stringList
 	debug        bool
+	trace        bool
 	apiAddr      string
 	metricsAddr  string
 )
@@ -90,6 +91,7 @@ func init() {
 	flag.BoolVar(&printVersion, "V", false, "print version")
 	flag.StringVar(&outputFormat, "O", "", "output format, one of yaml|json format")
 	flag.BoolVar(&debug, "D", false, "debug mode")
+	flag.BoolVar(&trace, "DD", false, "trace mode")
 	flag.StringVar(&apiAddr, "api", "", "api service address")
 	flag.StringVar(&metricsAddr, "metrics", "", "metrics service address")
 	flag.Parse()
@@ -99,13 +101,15 @@ func init() {
 			version, runtime.Version(), runtime.GOOS, runtime.GOARCH)
 		os.Exit(0)
 	}
-
-	logger.SetDefault(xlogger.NewLogger())
 }
 
 func main() {
+	log := xlogger.NewLogger()
+	logger.SetDefault(log)
+
 	p := &program{}
+
 	if err := svc.Run(p); err != nil {
-		log.Fatal(err)
+		logger.Default().Fatal(err)
 	}
 }

cmd/gost/program.go

@@ -1,139 +1,44 @@
 package main
 
 import (
-	"encoding/json"
+	"context"
+	"errors"
 	"net/http"
 	"os"
-	"strings"
+	"os/signal"
+	"syscall"
 
 	"github.com/go-gost/core/logger"
 	"github.com/go-gost/core/service"
 	"github.com/go-gost/x/config"
-	"github.com/go-gost/x/config/cmd"
 	"github.com/go-gost/x/config/parsing"
 	logger_parser "github.com/go-gost/x/config/parsing/logger"
-	xmd "github.com/go-gost/x/metadata"
-	mdutil "github.com/go-gost/x/metadata/util"
 	xmetrics "github.com/go-gost/x/metrics"
 	"github.com/go-gost/x/registry"
 	"github.com/judwhite/go-svc"
 )
 
 type program struct {
-	apiSrv    service.Service
+	srvApi       service.Service
-	metricSrv service.Service
+	srvMetric    service.Service
+	srvProfiling *http.Server
+
+	cancel context.CancelFunc
 }
 
 func (p *program) Init(env svc.Environment) error {
-	cfg := &config.Config{}
+	cfg, err := parseConfig()
-	if cfgFile != "" {
-		cfgFile = strings.TrimSpace(cfgFile)
-		if strings.HasPrefix(cfgFile, "{") && strings.HasSuffix(cfgFile, "}") {
-			if err := json.Unmarshal([]byte(cfgFile), cfg); err != nil {
-				return err
-			}
-		} else {
-			if err := cfg.ReadFile(cfgFile); err != nil {
-				logger.Default().Error(err)
-				return err
-			}
-		}
-	}
-
-	cmdCfg, err := cmd.BuildConfigFromCmd(services, nodes)
 	if err != nil {
 		return err
 	}
-	cfg = p.mergeConfig(cfg, cmdCfg)
 
-	if len(cfg.Services) == 0 && apiAddr == "" && cfg.API == nil {
+	config.Set(cfg)
-		if err := cfg.Load(); err != nil {
-			return err
-		}
-	}
 
-	if v := os.Getenv("GOST_API"); v != "" {
+	return nil
-		cfg.API = &config.APIConfig{
+}
-			Addr: v,
-		}
-	}
-	if v := os.Getenv("GOST_LOGGER_LEVEL"); v != "" {
-		cfg.Log = &config.LogConfig{
-			Level: v,
-		}
-	}
-	if v := os.Getenv("GOST_PROFILING"); v != "" {
-		cfg.Profiling = &config.ProfilingConfig{
-			Addr: v,
-		}
-	}
-	if v := os.Getenv("GOST_METRICS"); v != "" {
-		cfg.Metrics = &config.MetricsConfig{
-			Addr: v,
-		}
-	}
 
-	if apiAddr != "" {
+func (p *program) Start() error {
-		cfg.API = &config.APIConfig{
+	cfg := config.Global()
-			Addr: apiAddr,
-		}
-		if url, _ := cmd.Norm(apiAddr); url != nil {
-			cfg.API.Addr = url.Host
-			if url.User != nil {
-				username := url.User.Username()
-				password, _ := url.User.Password()
-				cfg.API.Auth = &config.AuthConfig{
-					Username: username,
-					Password: password,
-				}
-			}
-			m := map[string]any{}
-			for k, v := range url.Query() {
-				if len(v) > 0 {
-					m[k] = v[0]
-				}
-			}
-			md := xmd.NewMetadata(m)
-			cfg.API.PathPrefix = mdutil.GetString(md, "pathPrefix")
-			cfg.API.AccessLog = mdutil.GetBool(md, "accesslog")
-		}
-	}
-	if debug {
-		if cfg.Log == nil {
-			cfg.Log = &config.LogConfig{}
-		}
-		cfg.Log.Level = string(logger.DebugLevel)
-	}
-	if metricsAddr != "" {
-		cfg.Metrics = &config.MetricsConfig{
-			Addr: metricsAddr,
-		}
-		if url, _ := cmd.Norm(metricsAddr); url != nil {
-			cfg.Metrics.Addr = url.Host
-			if url.User != nil {
-				username := url.User.Username()
-				password, _ := url.User.Password()
-				cfg.Metrics.Auth = &config.AuthConfig{
-					Username: username,
-					Password: password,
-				}
-			}
-			m := map[string]any{}
-			for k, v := range url.Query() {
-				if len(v) > 0 {
-					m[k] = v[0]
-				}
-			}
-			md := xmd.NewMetadata(m)
-			cfg.Metrics.Path = mdutil.GetString(md, "path")
-		}
-	}
-
-	logCfg := cfg.Log
-	if logCfg == nil {
-		logCfg = &config.LogConfig{}
-	}
-	logger.SetDefault(logger_parser.ParseLogger(&config.LoggerConfig{Log: logCfg}))
 
 	if outputFormat != "" {
 		if err := cfg.Write(os.Stdout, outputFormat); err != nil {
@@ -142,127 +47,173 @@ func (p *program) Init(env svc.Environment) error {
 		os.Exit(0)
 	}
 
-	parsing.BuildDefaultTLSConfig(cfg.TLS)
+	if cfg.Metrics != nil {
+		xmetrics.Init(xmetrics.NewMetrics())
+	}
 
-	config.Set(cfg)
+	if err := p.build(cfg); err != nil {
+		return err
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	p.cancel = cancel
+	go p.reload(ctx)
 
 	return nil
 }
 
-func (p *program) Start() error {
+func (p *program) Stop() error {
-	log := logger.Default()
+	if p.cancel != nil {
-	cfg := config.Global()
+		p.cancel()
+	}
 
-	if cfg.API != nil {
+	for name, srv := range registry.ServiceRegistry().GetAll() {
-		s, err := buildAPIService(cfg.API)
+		srv.Close()
+		logger.Default().Debugf("service %s shutdown", name)
+	}
+	if p.srvApi != nil {
+		p.srvApi.Close()
+	}
+	if p.srvMetric != nil {
+		p.srvMetric.Close()
+	}
+	if p.srvProfiling != nil {
+		p.srvProfiling.Close()
+	}
+	return nil
+}
+
+func (p *program) reload(ctx context.Context) {
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, syscall.SIGHUP)
+
+	for {
+		select {
+		case <-c:
+			if err := p.reloadConfig(); err != nil {
+				logger.Default().Error(err)
+			} else {
+				logger.Default().Info("config reloaded")
+			}
+
+		case <-ctx.Done():
+			return
+		}
+	}
+}
+
+func (p *program) reloadConfig() error {
+	cfg, err := parseConfig()
 	if err != nil {
 		return err
 	}
-		p.apiSrv = s
+
-		go func() {
+	config.Set(cfg)
-			defer s.Close()
+
-			log.Info("api service on ", s.Addr())
+	if err := p.build(cfg); err != nil {
-			log.Error(s.Serve())
+		return err
-		}()
-	}
-	if cfg.Profiling != nil {
-		go func() {
-			addr := cfg.Profiling.Addr
-			if addr == "" {
-				addr = ":6060"
-			}
-			log.Info("profiling server on ", addr)
-			log.Fatal(http.ListenAndServe(addr, nil))
-		}()
 	}
 
-	if cfg.Metrics != nil {
+	return nil
-		xmetrics.Init(xmetrics.NewMetrics())
+}
-		if cfg.Metrics.Addr != "" {
+
-			s, err := buildMetricsService(cfg.Metrics)
+func (p *program) build(cfg *config.Config) error {
+	logCfg := cfg.Log
+	if logCfg == nil {
+		logCfg = &config.LogConfig{}
+	}
+	logger.SetDefault(logger_parser.ParseLogger(&config.LoggerConfig{Log: logCfg}))
+
+	tlsCfg, err := parsing.BuildDefaultTLSConfig(cfg.TLS)
 	if err != nil {
-				log.Fatal(err)
+		return err
-			}
-			p.metricSrv = s
-			go func() {
-				defer s.Close()
-				log.Info("metrics service on ", s.Addr())
-				log.Error(s.Serve())
-			}()
 	}
+	parsing.SetDefaultTLSConfig(tlsCfg)
+
+	if err := register(cfg); err != nil {
+		return err
 	}
 
-	for _, svc := range buildService(cfg) {
+	for _, svc := range registry.ServiceRegistry().GetAll() {
 		svc := svc
 		go func() {
 			svc.Serve()
 		}()
 	}
 
+	if cfg.API != nil {
+		if p.srvApi != nil {
+			p.srvApi.Close()
+		}
+
+		s, err := buildAPIService(cfg.API)
+		if err != nil {
+			return err
+		}
+
+		p.srvApi = s
+
+		go func() {
+			defer s.Close()
+
+			log := logger.Default().WithFields(map[string]any{"kind": "service", "service": "@api"})
+
+			log.Info("listening on ", s.Addr())
+			if err := s.Serve(); !errors.Is(err, http.ErrServerClosed) {
+				log.Error(err)
+			}
+		}()
+	}
+
+	if cfg.Metrics != nil && cfg.Metrics.Addr != "" {
+		if p.srvMetric != nil {
+			p.srvMetric.Close()
+		}
+
+		s, err := buildMetricsService(cfg.Metrics)
+		if err != nil {
+			return err
+		}
+
+		p.srvMetric = s
+
+		go func() {
+			defer s.Close()
+
+			log := logger.Default().WithFields(map[string]any{"kind": "service", "service": "@metrics"})
+
+			log.Info("listening on ", s.Addr())
+			if err := s.Serve(); !errors.Is(err, http.ErrServerClosed) {
+				log.Error(err)
+			}
+		}()
+	}
+
+	if cfg.Profiling != nil {
+		if p.srvProfiling != nil {
+			p.srvProfiling.Close()
+		}
+
+		addr := cfg.Profiling.Addr
+		if addr == "" {
+			addr = ":6060"
+		}
+		s := &http.Server{
+			Addr: addr,
+		}
+		p.srvProfiling = s
+
+		go func() {
+			defer s.Close()
+
+			log := logger.Default().WithFields(map[string]any{"kind": "service", "service": "@profiling"})
+
+			log.Info("listening on ", addr)
+			if err := s.ListenAndServe(); !errors.Is(err, http.ErrServerClosed) {
+				log.Error(err)
+			}
+		}()
+	}
+
 	return nil
 }
-
-func (p *program) Stop() error {
-	for name, srv := range registry.ServiceRegistry().GetAll() {
-		srv.Close()
-		logger.Default().Debugf("service %s shutdown", name)
-	}
-	if p.apiSrv != nil {
-		p.apiSrv.Close()
-	}
-	if p.metricSrv != nil {
-		p.metricSrv.Close()
-	}
-	return nil
-}
-
-func (p *program) mergeConfig(cfg1, cfg2 *config.Config) *config.Config {
-	if cfg1 == nil {
-		return cfg2
-	}
-	if cfg2 == nil {
-		return cfg1
-	}
-
-	cfg := &config.Config{
-		Services:   append(cfg1.Services, cfg2.Services...),
-		Chains:     append(cfg1.Chains, cfg2.Chains...),
-		Hops:       append(cfg1.Hops, cfg2.Hops...),
-		Authers:    append(cfg1.Authers, cfg2.Authers...),
-		Admissions: append(cfg1.Admissions, cfg2.Admissions...),
-		Bypasses:   append(cfg1.Bypasses, cfg2.Bypasses...),
-		Resolvers:  append(cfg1.Resolvers, cfg2.Resolvers...),
-		Hosts:      append(cfg1.Hosts, cfg2.Hosts...),
-		Ingresses:  append(cfg1.Ingresses, cfg2.Ingresses...),
-		SDs:        append(cfg1.SDs, cfg2.SDs...),
-		Recorders:  append(cfg1.Recorders, cfg2.Recorders...),
-		Limiters:   append(cfg1.Limiters, cfg2.Limiters...),
-		CLimiters:  append(cfg1.CLimiters, cfg2.CLimiters...),
-		RLimiters:  append(cfg1.RLimiters, cfg2.RLimiters...),
-		Loggers:    append(cfg1.Loggers, cfg2.Loggers...),
-		Routers:    append(cfg1.Routers, cfg2.Routers...),
-		Observers:  append(cfg1.Observers, cfg2.Observers...),
-		TLS:        cfg1.TLS,
-		Log:        cfg1.Log,
-		API:        cfg1.API,
-		Metrics:    cfg1.Metrics,
-		Profiling:  cfg1.Profiling,
-	}
-	if cfg2.TLS != nil {
-		cfg.TLS = cfg2.TLS
-	}
-	if cfg2.Log != nil {
-		cfg.Log = cfg2.Log
-	}
-	if cfg2.API != nil {
-		cfg.API = cfg2.API
-	}
-	if cfg2.Metrics != nil {
-		cfg.Metrics = cfg2.Metrics
-	}
-	if cfg2.Profiling != nil {
-		cfg.Profiling = cfg2.Profiling
-	}
-
-	return cfg
-}

go.mod

@@ -5,8 +5,8 @@ go 1.23.0
 toolchain go1.23.4
 
 require (
-	github.com/go-gost/core v0.2.0
+	github.com/go-gost/core v0.2.1
-	github.com/go-gost/x v0.3.1
+	github.com/go-gost/x v0.4.0
 	github.com/judwhite/go-svc v1.2.1
 )
 

go.sum

@@ -51,8 +51,8 @@ github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE
 github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
 github.com/gin-gonic/gin v1.10.0 h1:nTuyha1TYqgedzytsKYqna+DfLos46nTv2ygFy86HFU=
 github.com/gin-gonic/gin v1.10.0/go.mod h1:4PMNQiOhvDRa013RKVbsiNwoyezlm2rm0uX/T7kzp5Y=
-github.com/go-gost/core v0.2.0 h1:hZf94DAv93iwKXXzGXBmspE5bExYcBJeLl6inL9mG6Y=
+github.com/go-gost/core v0.2.1 h1:oNTeKRcuTYowzWIBEgd/YtDocxzyvsqgWpnn/Q3vuaw=
-github.com/go-gost/core v0.2.0/go.mod h1:WGI43jOka7FAsSAwi/fSMaqxdR+E339ycb4NBGlFr6A=
+github.com/go-gost/core v0.2.1/go.mod h1:WGI43jOka7FAsSAwi/fSMaqxdR+E339ycb4NBGlFr6A=
 github.com/go-gost/gosocks4 v0.0.1 h1:+k1sec8HlELuQV7rWftIkmy8UijzUt2I6t+iMPlGB2s=
 github.com/go-gost/gosocks4 v0.0.1/go.mod h1:3B6L47HbU/qugDg4JnoFPHgJXE43Inz8Bah1QaN9qCc=
 github.com/go-gost/gosocks5 v0.4.2 h1:IianxHTkACPqCwiOAT3MHoMdSUl+SEPSRu1ikawC1Pc=
@@ -63,8 +63,8 @@ github.com/go-gost/relay v0.5.0 h1:JG1tgy/KWiVXS0ukuVXvbM0kbYuJTWxYpJ5JwzsCf/c=
 github.com/go-gost/relay v0.5.0/go.mod h1:lcX+23LCQ3khIeASBo+tJ/WbwXFO32/N5YN6ucuYTG8=
 github.com/go-gost/tls-dissector v0.1.1 h1:2zUOTPzCQAUQ54Rpy0UEi3JPMQSYsIFSeFeKrzmkCoU=
 github.com/go-gost/tls-dissector v0.1.1/go.mod h1:/9QfdewqmHdaE362Hv5nDaSWLx3pCmtD870d6GaquXs=
-github.com/go-gost/x v0.3.1 h1:sL4O0OwaEncMhV3XiUkB0H6sHnt6MsQn4eBWnqxJHpI=
+github.com/go-gost/x v0.4.0 h1:Hj3bdgyfVEKR/zPLPJ4CJmfVbV8qWPqqfVWxqdS7tJ8=
-github.com/go-gost/x v0.3.1/go.mod h1:t/wKYrBSJIKg3Z8j84jautQiP/+qROuqOx3aHbiLV7g=
+github.com/go-gost/x v0.4.0/go.mod h1:O3FX/RzTvDLqSkU6/FmpImUSpnRRY1TlnaQKnRA3Abo=
 github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY=
 github.com/go-logr/logr v1.4.2/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=