Add Inner Ring code

cmd/neofs-ir/main.go

@@ -0,0 +1,82 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/nspcc-dev/neofs-node/misc"
+	"github.com/nspcc-dev/neofs-node/pkg/innerring"
+	"github.com/nspcc-dev/neofs-node/pkg/util/grace"
+	"github.com/nspcc-dev/neofs-node/pkg/util/logger"
+	"github.com/nspcc-dev/neofs-node/pkg/util/profiler"
+)
+
+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")
+	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)
+
+	log, err := logger.NewLogger(cfg)
+	exitErr(err)
+
+	ctx := grace.NewGracefulContext(log)
+
+	pprof := profiler.NewProfiler(log, cfg)
+	prometheus := profiler.NewMetrics(log, cfg)
+
+	innerRing, err := innerring.New(ctx, log, cfg)
+	if err != nil {
+		exitErr(err)
+	}
+
+	// start pprof if enabled
+	if pprof != nil {
+		pprof.Start(ctx)
+		defer pprof.Stop()
+	}
+
+	// start prometheus if enabled
+	if prometheus != nil {
+		prometheus.Start(ctx)
+		defer prometheus.Stop()
+	}
+
+	// start inner ring
+	err = innerRing.Start(ctx)
+	if err != nil {
+		exitErr(err)
+	}
+
+	log.Info("application started")
+
+	// todo: select ctx.Done or exported error channel
+	<-ctx.Done()
+
+	innerRing.Stop()
+
+	log.Info("application stopped")
+}