Prepare to export

cmd/gate/app-healthy.go

@@ -5,15 +5,18 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
-	"go.uber.org/atomic"
 )
 
+type Healthy interface {
+	Status() error
+}
+
 const (
 	healthyState = "NeoFS S3 Gateway is "
 	// defaultContentType = "text/plain; charset=utf-8"
 )
 
-func attachHealthy(r *mux.Router, e *atomic.Error) {
+func attachHealthy(r *mux.Router, h Healthy) {
 	r.HandleFunc("/-/ready", func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
 		_, _ = fmt.Fprintln(w, healthyState+"ready")
@@ -23,7 +26,7 @@ func attachHealthy(r *mux.Router, e *atomic.Error) {
 		code := http.StatusOK
 		msg := "healthy"
 
-		if err := e.Load(); err != nil {
+		if err := h.Status(); err != nil {
 			msg = "unhealthy: " + err.Error()
 			code = http.StatusBadRequest
 		}

cmd/gate/app-metrics.go

@@ -4,12 +4,14 @@ import (
 	"github.com/gorilla/mux"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/spf13/viper"
+	"go.uber.org/zap"
 )
 
-func attachMetrics(v *viper.Viper, r *mux.Router) {
+func attachMetrics(v *viper.Viper, l *zap.Logger, r *mux.Router) {
 	if !v.GetBool(cfgEnableMetrics) {
 		return
 	}
 
+	l.Info("enable metrics")
 	r.Handle("/metrics", promhttp.Handler())
 }

cmd/gate/app-profiler.go

@@ -5,13 +5,16 @@ import (
 
 	"github.com/gorilla/mux"
 	"github.com/spf13/viper"
+	"go.uber.org/zap"
 )
 
-func attachProfiler(v *viper.Viper, r *mux.Router) {
+func attachProfiler(v *viper.Viper, l *zap.Logger, r *mux.Router) {
 	if !v.GetBool(cfgEnableProfiler) {
 		return
 	}
 
+	l.Info("enable profiler")
+
 	r.HandleFunc("/debug/pprof/", pprof.Index)
 	r.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
 	r.HandleFunc("/debug/pprof/profile", pprof.Profile)

cmd/gate/app-settings.go

@@ -35,6 +35,7 @@ const (
 	defaultRebalanceTimer  = 15 * time.Second
 	defaultRequestTimeout  = 15 * time.Second
 	defaultConnectTimeout  = 30 * time.Second
+	defaultShutdownTimeout = 15 * time.Second
 
 	defaultKeepaliveTime    = 10 * time.Second
 	defaultKeepaliveTimeout = 10 * time.Second

cmd/gate/app.go

@@ -2,8 +2,11 @@ package main
 
 import (
 	"context"
+	"net"
+	"net/http"
 	"time"
 
+	"github.com/gorilla/mux"
 	minio "github.com/minio/minio/legacy"
 	"github.com/minio/minio/neofs/layer"
 	"github.com/minio/minio/neofs/pool"
@@ -19,12 +22,15 @@ type (
 	App struct {
 		cli pool.Pool
 		log *zap.Logger
+		web *mux.Router
 		cfg *viper.Viper
 		obj minio.ObjectLayer
 
 		conTimeout time.Duration
 		reqTimeout time.Duration
 
+		reBalance time.Duration
+
 		webDone chan struct{}
 		wrkDone chan struct{}
 	}
@@ -40,6 +46,8 @@ func newApp(l *zap.Logger, v *viper.Viper) *App {
 
 		key = fetchKey(l, v)
 
+		reBalance = defaultRebalanceTimer
+
 		conTimeout = defaultConnectTimeout
 		reqTimeout = defaultRequestTimeout
 	)
@@ -68,6 +76,10 @@ func newApp(l *zap.Logger, v *viper.Viper) *App {
 		ClientParameters: keepalive.ClientParameters{},
 	}
 
+	if v := v.GetDuration(cfgRebalanceTimer); v > 0 {
+		reBalance = v
+	}
+
 	if cli, err = pool.New(poolConfig); err != nil {
 		l.Fatal("could not prepare pool connections",
 			zap.Error(err))
@@ -108,38 +120,90 @@ func newApp(l *zap.Logger, v *viper.Viper) *App {
 		cli: cli,
 		log: l,
 		cfg: v,
+		web: minio.NewRouter(obj),
 
 		webDone: make(chan struct{}, 1),
 		wrkDone: make(chan struct{}, 1),
 
+		reBalance: reBalance,
+
 		conTimeout: conTimeout,
 		reqTimeout: reqTimeout,
 	}
 }
 
-func (a *App) Wait(ctx context.Context) {
-	defer a.log.Info("application finished")
+func (a *App) Wait() {
 	a.log.Info("application started")
+
 	select {
 	case <-a.wrkDone: // wait for worker is stopped
 		<-a.webDone
 	case <-a.webDone: // wait for web-server is stopped
 		<-a.wrkDone
 	}
+
+	a.log.Info("application finished")
 }
 
 func (a *App) Server(ctx context.Context) {
-	defer func() {
-		<-ctx.Done()
-		a.log.Info("stopping server")
-		close(a.webDone)
+	var (
+		err  error
+		lis  net.Listener
+		lic  net.ListenConfig
+		srv  = http.Server{Handler: a.web}
+		addr = a.cfg.GetString(cfgListenAddress)
+	)
+
+	if lis, err = lic.Listen(ctx, "tcp", addr); err != nil {
+		a.log.Fatal("could not prepare listener",
+			zap.Error(err))
+	}
+
+	// Attach app-specific routes:
+	attachHealthy(a.web, a.cli)
+	attachMetrics(a.cfg, a.log, a.web)
+	attachProfiler(a.cfg, a.log, a.web)
+
+	go func() {
+		a.log.Info("starting server",
+			zap.String("bind", addr))
+
+		if err = srv.Serve(lis); err != nil && err != http.ErrServerClosed {
+			a.log.Warn("listen and serve",
+				zap.Error(err))
+		}
 	}()
+
+	<-ctx.Done()
+
+	ctx, cancel := context.WithTimeout(context.Background(), defaultShutdownTimeout)
+	defer cancel()
+
+	a.log.Info("stopping server",
+		zap.Error(srv.Shutdown(ctx)))
+
+	close(a.webDone)
 }
 
 func (a *App) Worker(ctx context.Context) {
-	defer func() {
-		<-ctx.Done()
+	tick := time.NewTimer(a.reBalance)
+
+loop:
+	for {
+		select {
+		case <-ctx.Done():
+			break loop
+		case <-tick.C:
+			ctx, cancel := context.WithTimeout(ctx, a.conTimeout)
+			a.cli.ReBalance(ctx)
+			cancel()
+
+			tick.Reset(a.reBalance)
+		}
+	}
+
+	tick.Stop()
+	a.cli.Close()
 	a.log.Info("stopping worker")
 	close(a.wrkDone)
-	}()
 }

cmd/gate/main.go

@@ -11,5 +11,5 @@ func main() {
 	go a.Server(g)
 	go a.Worker(g)
 
-	a.Wait(g)
+	a.Wait()
 }

legacy/neofs-router.go

@@ -0,0 +1,44 @@
+package legacy
+
+import (
+	"github.com/gorilla/mux"
+)
+
+func NewRouter(obj ObjectLayer) *mux.Router {
+	// Initialize router. `SkipClean(true)` stops gorilla/mux from
+	// normalizing URL path minio/minio#3256
+	// avoid URL path encoding minio/minio#8950
+	router := mux.NewRouter().SkipClean(true).UseEncodedPath()
+
+	// Add healthcheck router
+	registerHealthCheckRouter(router)
+
+	// Add server metrics router
+	registerMetricsRouter(router)
+
+	// Add API router.
+	registerAPIRouter(router, true, true)
+
+	layer := NewGatewayLayerWithLocker(obj)
+
+	// Once endpoints are finalized, initialize the new object api in safe mode.
+	globalObjLayerMutex.Lock()
+	globalSafeMode = true
+	globalObjectAPI = layer
+	globalObjLayerMutex.Unlock()
+
+	// Calls all New() for all sub-systems.
+	newAllSubsystems()
+
+	// Verify if object layer supports
+	// - encryption
+	// - compression
+	verifyObjectLayerFeatures("gateway NeoFS", layer)
+
+	// Disable safe mode operation, after all initialization is over.
+	globalObjLayerMutex.Lock()
+	globalSafeMode = false
+	globalObjLayerMutex.Unlock()
+
+	return router
+}

neofs/pool/pool.go

@@ -182,7 +182,7 @@ func (p *pool) ReBalance(ctx context.Context) {
 
 	keys := make(map[uint32]struct{})
 
-	p.log.Info("re-balancing connections")
+	p.log.Debug("re-balancing connections")
 
 	for i := range p.nodes {
 		var (