[#135] tracing: Add tracing to node gRPC endpoints

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

cmd/frostfs-node/config.go

@@ -16,6 +16,7 @@ import (
 	"time"
 
 	netmapV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/netmap"
+	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/pkg/tracing"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
 	apiclientconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/apiclient"
 	contractsconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/contracts"
@@ -27,6 +28,7 @@ import (
 	nodeconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/node"
 	objectconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/object"
 	replicatorconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/replicator"
+	tracingconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/tracing"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	netmapCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
@@ -1055,6 +1057,13 @@ func (c *cfg) reloadConfig(ctx context.Context) {
 	}
 
 	components = append(components, dCmp{"logger", logPrm.Reload})
+	components = append(components, dCmp{"tracing", func() error {
+		updated, err := tracing.Setup(ctx, *tracingconfig.ToTracingConfig(c.appCfg))
+		if updated {
+			c.log.Info("tracing configation updated")
+		}
+		return err
+	}})
 	if cmp, updated := metricsComponent(c); updated {
 		if cmp.enabled {
 			cmp.preReload = enableMetricsSvc

cmd/frostfs-node/config/tracing/config.go

@@ -0,0 +1,31 @@
+package tracing
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/pkg/tracing"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/misc"
+)
+
+const (
+	subsection = "tracing"
+)
+
+// ToTracingConfig extracts tracing config.
+func ToTracingConfig(c *config.Config) *tracing.Config {
+	return &tracing.Config{
+		Enabled:    config.BoolSafe(c.Sub(subsection), "enabled"),
+		Exporter:   tracing.Exporter(config.StringSafe(c.Sub(subsection), "exporter")),
+		Endpoint:   config.StringSafe(c.Sub(subsection), "endpoint"),
+		Service:    "frostfs-node",
+		InstanceID: getInstanceIDOrDefault(c),
+		Version:    misc.Version,
+	}
+}
+
+func getInstanceIDOrDefault(c *config.Config) string {
+	s := config.StringSlice(c.Sub("node"), "addresses")
+	if len(s) > 0 {
+		return s[0]
+	}
+	return ""
+}

cmd/frostfs-node/grpc.go

@@ -7,6 +7,7 @@ import (
 	"net"
 	"time"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/pkg/tracing"
 	grpcconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/grpc"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
 	"go.uber.org/zap"
@@ -19,6 +20,12 @@ func initGRPC(c *cfg) {
 	grpcconfig.IterateEndpoints(c.appCfg, func(sc *grpcconfig.Config) {
 		serverOpts := []grpc.ServerOption{
 			grpc.MaxSendMsgSize(maxMsgSize),
+			grpc.ChainUnaryInterceptor(
+				tracing.NewGRPCUnaryServerInterceptor(),
+			),
+			grpc.ChainStreamInterceptor(
+				tracing.NewGRPCStreamServerInterceptor(),
+			),
 		}
 
 		tlsCfg := sc.TLS()

cmd/frostfs-node/main.go

@@ -87,6 +87,8 @@ func initApp(ctx context.Context, c *cfg) {
 	initAndLog(c, pprof.name, pprof.init)
 	initAndLog(c, metrics.name, metrics.init)
 
+	initAndLog(c, "tracing", func(c *cfg) { initTracing(ctx, c) })
+
 	initLocalStorage(c)
 
 	initAndLog(c, "storage engine", func(c *cfg) {

cmd/frostfs-node/tracing.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"context"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/pkg/tracing"
+	tracingconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/tracing"
+	"go.uber.org/zap"
+)
+
+func initTracing(ctx context.Context, c *cfg) {
+	conf := tracingconfig.ToTracingConfig(c.appCfg)
+
+	_, err := tracing.Setup(ctx, *conf)
+	if err != nil {
+		c.log.Error("failed init tracing", zap.Error(err))
+	}
+
+	c.closers = append(c.closers, closer{
+		name: "tracing",
+		fn: func() {
+			ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+			defer cancel()
+			err := tracing.Shutdown(ctx) //cfg context cancels before close
+			if err != nil {
+				c.log.Error("failed shutdown tracing", zap.Error(err))
+			}
+		},
+	})
+}