From b5cadff2c3009db450b44f175ea90e2c962a2785 Mon Sep 17 00:00:00 2001
From: Pavel Karpy <carpawell@nspcc.ru>
Date: Wed, 4 Aug 2021 17:44:37 +0300
Subject: [PATCH] [#745] node: Add more debug logs on shutdown

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
---
 cmd/neofs-node/grpc.go    | 8 ++++++++
 cmd/neofs-node/main.go    | 2 ++
 cmd/neofs-node/metrics.go | 4 ++++
 cmd/neofs-node/pprof.go   | 4 ++++
 4 files changed, 18 insertions(+)

diff --git a/cmd/neofs-node/grpc.go b/cmd/neofs-node/grpc.go
index a93ae222c..576f58b13 100644
--- a/cmd/neofs-node/grpc.go
+++ b/cmd/neofs-node/grpc.go
@@ -50,9 +50,17 @@ func serveGRPC(c *cfg) {
 
 		go func() {
 			defer func() {
+				c.log.Info("stop listening gRPC endpoint",
+					zap.String("endpoint", lis.Addr().String()),
+				)
+
 				c.wg.Done()
 			}()
 
+			c.log.Info("start listening gRPC endpoint",
+				zap.String("endpoint", lis.Addr().String()),
+			)
+
 			if err := srv.Serve(lis); err != nil {
 				fmt.Println("gRPC server error", err)
 			}
diff --git a/cmd/neofs-node/main.go b/cmd/neofs-node/main.go
index 6ec40e43b..4be7b62c0 100644
--- a/cmd/neofs-node/main.go
+++ b/cmd/neofs-node/main.go
@@ -117,6 +117,8 @@ func shutdown(c *cfg) {
 		closer()
 	}
 
+	c.log.Debug("waiting for all processes to stop")
+
 	c.wg.Wait()
 }
 
diff --git a/cmd/neofs-node/metrics.go b/cmd/neofs-node/metrics.go
index 4617d1915..d837dc9c7 100644
--- a/cmd/neofs-node/metrics.go
+++ b/cmd/neofs-node/metrics.go
@@ -31,11 +31,15 @@ func initMetrics(c *cfg) {
 	}))
 
 	c.closers = append(c.closers, func() {
+		c.log.Debug("shutting down metrics service")
+
 		err := srv.Shutdown()
 		if err != nil {
 			c.log.Debug("could not shutdown metrics server",
 				zap.String("error", err.Error()),
 			)
 		}
+
+		c.log.Debug("metrics service has been stopped")
 	})
 }
diff --git a/cmd/neofs-node/pprof.go b/cmd/neofs-node/pprof.go
index dc6f74b16..5332fafbe 100644
--- a/cmd/neofs-node/pprof.go
+++ b/cmd/neofs-node/pprof.go
@@ -30,11 +30,15 @@ func initProfiler(c *cfg) {
 	}))
 
 	c.closers = append(c.closers, func() {
+		c.log.Debug("shutting down profiling service")
+
 		err := srv.Shutdown()
 		if err != nil {
 			c.log.Debug("could not shutdown pprof server",
 				zap.String("error", err.Error()),
 			)
 		}
+
+		c.log.Debug("profiling service has been stopped")
 	})
 }