[#70] cmd/neofs-node: Start asynchronous workers on app launch

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

cmd/neofs-node/config.go

@@ -105,6 +105,8 @@ type cfg struct {
 	cfgObject cfgObject
 
 	profiler profiler.Profiler
+
+	workers []worker
 }
 
 type cfgGRPC struct {

cmd/neofs-node/main.go

@@ -44,6 +44,7 @@ func bootUp(c *cfg) {
 	serveProfiler(c)
 	serveGRPC(c)
 	bootstrapNode(c)
+	startWorkers(c)
 }
 
 func wait(c *cfg) {

cmd/neofs-node/worker.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"context"
+)
+
+type worker interface {
+	Run(context.Context)
+}
+
+func startWorkers(c *cfg) {
+	for _, wrk := range c.workers {
+		c.wg.Add(1)
+
+		go func() {
+			wrk.Run(c.ctx)
+			c.wg.Done()
+		}()
+	}
+}