[#1539] node: Support healthcheck server for gRPC services

Signed-off-by: Airat Arifullin <a.arifullin@yadro.com>

cmd/frostfs-node/grpc_health.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"net"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/health"
+	healthV1 "google.golang.org/grpc/health/grpc_health_v1"
+)
+
+func initGRPCHealth(c *cfg) {
+	healthServer := health.NewServer()
+	c.cfgGRPC.performAndSave(func(_ string, _ net.Listener, srv *grpc.Server) {
+		healthV1.RegisterHealthServer(srv, healthServer)
+		healthServer.SetServingStatus("", healthV1.HealthCheckResponse_SERVING)
+	})
+	c.onShutdown(func() {
+		healthServer.SetServingStatus("", healthV1.HealthCheckResponse_NOT_SERVING)
+	})
+}

cmd/frostfs-node/main.go

@@ -117,6 +117,8 @@ func initApp(ctx context.Context, c *cfg) {
 	initAndLog(ctx, c, "control", func(c *cfg) { initControlService(ctx, c) })
 
 	initAndLog(ctx, c, "morph notifications", func(c *cfg) { listenMorphNotifications(ctx, c) })
+
+	initAndLog(ctx, c, "grpc_health", initGRPCHealth)
 }
 
 func runAndLog(ctx context.Context, c *cfg, name string, logSuccess bool, starter func(context.Context, *cfg)) {

go.mod

@@ -2,6 +2,8 @@ module git.frostfs.info/TrueCloudLab/frostfs-node
 
 go 1.22
 
+replace git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20241107121119-cb813e27a823 => git.frostfs.info/aarifullin/frostfs-sdk-go v0.0.0-20241204121743-ab885d24496a
+
 require (
 	code.gitea.io/sdk/gitea v0.17.1
 	git.frostfs.info/TrueCloudLab/frostfs-contract v0.21.0-rc.4