LICENSE

@@ -1,201 +0,0 @@
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-   limitations under the License.

README.md

@@ -1,22 +0,0 @@
-# Helper Go libraries for working with metrics, traces and logging
-
-See package documentation
-at [pkg.go.dev](https://pkg.go.dev/git.frostfs.info/TrueCloudLab/frostfs-observability)
-
-## License and copyright
-
-Copyright 2023-2024 FrostFS contributors
-
-```
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-```

testdata/tracing/invalid_root_ca.pem

@@ -1 +0,0 @@
-invalid content

testdata/tracing/valid_google_globalsign_r4_rsa_root_ca.pem

@@ -1,12 +0,0 @@
------BEGIN CERTIFICATE-----
-MIIB3DCCAYOgAwIBAgINAgPlfvU/k/2lCSGypjAKBggqhkjOPQQDAjBQMSQwIgYD
-VQQLExtHbG9iYWxTaWduIEVDQyBSb290IENBIC0gUjQxEzARBgNVBAoTCkdsb2Jh
-bFNpZ24xEzARBgNVBAMTCkdsb2JhbFNpZ24wHhcNMTIxMTEzMDAwMDAwWhcNMzgw
-MTE5MDMxNDA3WjBQMSQwIgYDVQQLExtHbG9iYWxTaWduIEVDQyBSb290IENBIC0g
-UjQxEzARBgNVBAoTCkdsb2JhbFNpZ24xEzARBgNVBAMTCkdsb2JhbFNpZ24wWTAT
-BgcqhkjOPQIBBggqhkjOPQMBBwNCAAS4xnnTj2wlDp8uORkcA6SumuU5BwkWymOx
-uYb4ilfBV85C+nOh92VC/x7BALJucw7/xyHlGKSq2XE/qNS5zowdo0IwQDAOBgNV
-HQ8BAf8EBAMCAYYwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUVLB7rUW44kB/
-+wpu+74zyTyjhNUwCgYIKoZIzj0EAwIDRwAwRAIgIk90crlgr/HmnKAWBVBfw147
-bmF0774BxL4YSFlhgjICICadVGNA3jdgUM/I2O2dgq43mLyjj0xMqTQrbO/7lZsm
------END CERTIFICATE-----

testdata/tracing/valid_google_gts_r4_ecdsa_root_ca.pem

@@ -1,13 +0,0 @@
------BEGIN CERTIFICATE-----
-MIICCTCCAY6gAwIBAgINAgPlwGjvYxqccpBQUjAKBggqhkjOPQQDAzBHMQswCQYD
-VQQGEwJVUzEiMCAGA1UEChMZR29vZ2xlIFRydXN0IFNlcnZpY2VzIExMQzEUMBIG
-A1UEAxMLR1RTIFJvb3QgUjQwHhcNMTYwNjIyMDAwMDAwWhcNMzYwNjIyMDAwMDAw
-WjBHMQswCQYDVQQGEwJVUzEiMCAGA1UEChMZR29vZ2xlIFRydXN0IFNlcnZpY2Vz
-IExMQzEUMBIGA1UEAxMLR1RTIFJvb3QgUjQwdjAQBgcqhkjOPQIBBgUrgQQAIgNi
-AATzdHOnaItgrkO4NcWBMHtLSZ37wWHO5t5GvWvVYRg1rkDdc/eJkTBa6zzuhXyi
-QHY7qca4R9gq55KRanPpsXI5nymfopjTX15YhmUPoYRlBtHci8nHc8iMai/lxKvR
-HYqjQjBAMA4GA1UdDwEB/wQEAwIBhjAPBgNVHRMBAf8EBTADAQH/MB0GA1UdDgQW
-BBSATNbrdP9JNqPV2Py1PsVq8JQdjDAKBggqhkjOPQQDAwNpADBmAjEA6ED/g94D
-9J+uHXqnLrmvT/aDHQ4thQEd0dlq7A/Cr8deVl5c1RxYIigL9zC2L7F8AjEA8GE8
-p/SgguMh1YQdc4acLa/KNJvxn7kjNuK8YAOdgLOaVsjh4rsUecrNIdSUtUlD
------END CERTIFICATE-----

tracing/config.go

@@ -1,10 +1,6 @@
 package tracing
 
-import (
+import "fmt"
-	"crypto/x509"
-	"fmt"
-	"maps"
-)
 
 // Exporter is type of tracing target.
 type Exporter string
@@ -22,8 +18,6 @@ type Config struct {
 	Exporter Exporter
 	// Endpoint is collector endpoint for OTLP exporters.
 	Endpoint string
-	// ServerCaCertPool is cert pool of the remote server CA certificate. Use for TLS setup.
-	ServerCaCertPool *x509.CertPool
 
 	// Service is service name that will be used in tracing.
 	// Mandatory.
@@ -34,9 +28,6 @@ type Config struct {
 	// Version is version of service instance.
 	// Optional.
 	Version string
-	// Attributes is KV list of attributes.
-	// Optional.
-	Attributes map[string]string
 }
 
 func (c *Config) validate() error {
@@ -73,10 +64,6 @@ func (c *Config) hasChange(other *Config) bool {
 		return !c.serviceInfoEqual(other)
 	}
 
-	if other.Exporter == OTLPgRPCExporter && !c.ServerCaCertPool.Equal(other.ServerCaCertPool) {
-		return true
-	}
-
 	return c.Exporter != other.Exporter ||
 		c.Endpoint != other.Endpoint ||
 		!c.serviceInfoEqual(other)
@@ -85,6 +72,5 @@ func (c *Config) hasChange(other *Config) bool {
 func (c *Config) serviceInfoEqual(other *Config) bool {
 	return c.Service == other.Service &&
 		c.InstanceID == other.InstanceID &&
-		c.Version == other.Version &&
+		c.Version == other.Version
-		maps.Equal(c.Attributes, other.Attributes)
 }

tracing/config_test.go

@@ -1,11 +1,7 @@
 package tracing
 
 import (
-	"crypto/x509"
-	"os"
 	"testing"
-
-	"github.com/stretchr/testify/require"
 )
 
 func TestConfig_validate(t *testing.T) {
@@ -236,28 +232,6 @@ func TestConfig_hasChange(t *testing.T) {
 				Version:    "v1.0.0",
 			},
 		},
-		{
-			name: "use tls root ca certificate for grpc",
-			want: true,
-			config: Config{
-				Enabled:          true,
-				Exporter:         OTLPgRPCExporter,
-				Endpoint:         "localhost:4717",
-				Service:          "test",
-				InstanceID:       "s01",
-				Version:          "v1.0.0",
-				ServerCaCertPool: readCertPoolByPath(t, "../testdata/tracing/valid_google_globalsign_r4_rsa_root_ca.pem"),
-			},
-			other: Config{
-				Enabled:          true,
-				Exporter:         OTLPgRPCExporter,
-				Endpoint:         "localhost:4717",
-				Service:          "test",
-				InstanceID:       "s01",
-				Version:          "v1.0.0",
-				ServerCaCertPool: readCertPoolByPath(t, "../testdata/tracing/valid_google_gts_r4_ecdsa_root_ca.pem"),
-			},
-		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -267,12 +241,3 @@ func TestConfig_hasChange(t *testing.T) {
 		})
 	}
 }
-
-func readCertPoolByPath(t *testing.T, path string) *x509.CertPool {
-	ca, err := os.ReadFile(path)
-	require.NoError(t, err)
-	roots := x509.NewCertPool()
-	ok := roots.AppendCertsFromPEM(ca)
-	require.True(t, ok)
-	return roots
-}

tracing/grpc/client.go

@@ -2,10 +2,7 @@ package grpc
 
 import (
 	"context"
-	"fmt"
 
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/trace"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/metadata"
 )
@@ -13,16 +10,14 @@ import (
 type clientStream struct {
 	originalStream grpc.ClientStream
 	desc           *grpc.StreamDesc
-	span           trace.Span
 	finished       chan<- error
 	done           <-chan struct{}
 }
 
-func newgRPCClientStream(originalStream grpc.ClientStream, desc *grpc.StreamDesc, span trace.Span, finished chan<- error, done <-chan struct{}) grpc.ClientStream {
+func newgRPCClientStream(originalStream grpc.ClientStream, desc *grpc.StreamDesc, finished chan<- error, done <-chan struct{}) grpc.ClientStream {
 	return &clientStream{
 		originalStream: originalStream,
 		desc:           desc,
-		span:           span,
 		finished:       finished,
 		done:           done,
 	}
@@ -44,7 +39,6 @@ func (cs *clientStream) Trailer() metadata.MD {
 }
 
 func (cs *clientStream) CloseSend() error {
-	cs.span.AddEvent("client.stream.close.send.start")
 	err := cs.originalStream.CloseSend()
 	if err != nil {
 		select {
@@ -52,7 +46,6 @@ func (cs *clientStream) CloseSend() error {
 		case cs.finished <- err:
 		}
 	}
-	cs.span.AddEvent("client.stream.close.send.finish")
 	return err
 }
 
@@ -61,9 +54,6 @@ func (cs *clientStream) Context() context.Context {
 }
 
 func (cs *clientStream) SendMsg(m any) error {
-	cs.span.AddEvent("client.stream.send.msg.start", trace.WithAttributes(
-		attribute.String("message.type", fmt.Sprintf("%T", m))),
-	)
 	err := cs.originalStream.SendMsg(m)
 	if err != nil {
 		select {
@@ -71,16 +61,10 @@ func (cs *clientStream) SendMsg(m any) error {
 		case cs.finished <- err:
 		}
 	}
-	cs.span.AddEvent("client.stream.send.msg.finish", trace.WithAttributes(
-		attribute.String("message.type", fmt.Sprintf("%T", m))),
-	)
 	return err
 }
 
 func (cs *clientStream) RecvMsg(m any) error {
-	cs.span.AddEvent("client.stream.receive.msg.start", trace.WithAttributes(
-		attribute.String("message.type", fmt.Sprintf("%T", m))),
-	)
 	err := cs.originalStream.RecvMsg(m)
 	if err != nil || !cs.desc.ServerStreams {
 		select {
@@ -88,8 +72,5 @@ func (cs *clientStream) RecvMsg(m any) error {
 		case cs.finished <- err:
 		}
 	}
-	cs.span.AddEvent("client.stream.receive.msg.finish", trace.WithAttributes(
-		attribute.String("message.type", fmt.Sprintf("%T", m))),
-	)
 	return err
 }

tracing/grpc/interceptors.go

@@ -50,7 +50,7 @@ func NewStreamClientInterceptor() grpc.StreamClientInterceptor {
 
 		finished := make(chan error)
 		done := make(chan struct{})
-		strWrp := newgRPCClientStream(str, desc, span, finished, done)
+		strWrp := newgRPCClientStream(str, desc, finished, done)
 
 		go func() {
 			defer close(done)
@@ -107,7 +107,7 @@ func NewStreamServerInterceptor() grpc.StreamServerInterceptor {
 			trace.WithSpanKind(trace.SpanKindServer))
 		defer span.End()
 
-		err := handler(srv, newgRPCServerStream(ctx, ss, span))
+		err := handler(srv, newgRPCServerStream(ctx, ss))
 
 		setGRPCSpanStatus(span, err)
 		return err

tracing/grpc/server.go

@@ -2,10 +2,7 @@ package grpc
 
 import (
 	"context"
-	"fmt"
 
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/trace"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/metadata"
 )
@@ -13,14 +10,12 @@ import (
 type serverStream struct {
 	originalStream grpc.ServerStream
 	ctx            context.Context // nolint:containedctx
-	span           trace.Span
 }
 
-func newgRPCServerStream(ctx context.Context, originalStream grpc.ServerStream, span trace.Span) grpc.ServerStream {
+func newgRPCServerStream(ctx context.Context, originalStream grpc.ServerStream) grpc.ServerStream {
 	return &serverStream{
 		originalStream: originalStream,
 		ctx:            ctx,
-		span:           span,
 	}
 }
 
@@ -41,23 +36,9 @@ func (ss *serverStream) Context() context.Context {
 }
 
 func (ss *serverStream) SendMsg(m any) error {
-	ss.span.AddEvent("server.stream.send.msg.start", trace.WithAttributes(
+	return ss.originalStream.SendMsg(m)
-		attribute.String("message.type", fmt.Sprintf("%T", m))),
-	)
-	err := ss.originalStream.SendMsg(m)
-	ss.span.AddEvent("server.stream.send.msg.finish", trace.WithAttributes(
-		attribute.String("message.type", fmt.Sprintf("%T", m))),
-	)
-	return err
 }
 
 func (ss *serverStream) RecvMsg(m any) error {
-	ss.span.AddEvent("server.stream.receive.msg.start", trace.WithAttributes(
+	return ss.originalStream.RecvMsg(m)
-		attribute.String("message.type", fmt.Sprintf("%T", m))),
-	)
-	err := ss.originalStream.RecvMsg(m)
-	ss.span.AddEvent("server.stream.receive.msg.finish", trace.WithAttributes(
-		attribute.String("message.type", fmt.Sprintf("%T", m))),
-	)
-	return err
 }

tracing/setup.go

@@ -2,8 +2,6 @@ package tracing
 
 import (
 	"context"
-	"crypto/x509"
-	"errors"
 	"fmt"
 	"sync"
 	"sync/atomic"
@@ -17,12 +15,8 @@ import (
 	semconv "go.opentelemetry.io/otel/semconv/v1.17.0"
 	"go.opentelemetry.io/otel/trace"
 	"go.opentelemetry.io/otel/trace/noop"
-	"google.golang.org/grpc/credentials"
 )
 
-// ErrEmptyServerRootCaPool indicates that cert pool is empty and does not have any certificates inside.
-var ErrEmptyServerRootCaPool = errors.New("empty server root ca cert pool")
-
 var (
 	// tracingLock protects provider, done, config and tracer from concurrent update.
 	// These fields change when the config is updated or the application is shutdown.
@@ -141,14 +135,7 @@ func getExporter(ctx context.Context, cfg *Config) (sdktrace.SpanExporter, error
 	case NoOpExporter:
 		return tracetest.NewNoopExporter(), nil
 	case OTLPgRPCExporter:
-		securityOption := otlptracegrpc.WithInsecure()
+		return otlptracegrpc.New(ctx, otlptracegrpc.WithEndpoint(cfg.Endpoint), otlptracegrpc.WithInsecure())
-		if cfg.ServerCaCertPool != nil {
-			if cfg.ServerCaCertPool.Equal(x509.NewCertPool()) {
-				return nil, fmt.Errorf("failed to setup tracing: %w", ErrEmptyServerRootCaPool)
-			}
-			securityOption = otlptracegrpc.WithTLSCredentials(credentials.NewClientTLSFromCert(cfg.ServerCaCertPool, ""))
-		}
-		return otlptracegrpc.New(ctx, otlptracegrpc.WithEndpoint(cfg.Endpoint), securityOption)
 	}
 }
 
@@ -162,9 +149,6 @@ func newResource(cfg *Config) *resource.Resource {
 	if len(cfg.InstanceID) > 0 {
 		attrs = append(attrs, semconv.ServiceInstanceID(cfg.InstanceID))
 	}
-	for k, v := range cfg.Attributes {
-		attrs = append(attrs, attribute.String(k, v))
-	}
 	return resource.NewWithAttributes(
 		semconv.SchemaURL,
 		attrs...,

tracing/setup_test.go

@@ -1,118 +0,0 @@
-package tracing_test
-
-import (
-	"context"
-	"crypto/x509"
-	"os"
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
-	"github.com/stretchr/testify/require"
-)
-
-func TestSetup(t *testing.T) {
-	tests := []struct {
-		name   string
-		config tracing.Config
-		want   bool
-		expErr error
-	}{
-		{
-			name: "setup stdout exporter",
-			config: tracing.Config{
-				Enabled:  true,
-				Exporter: tracing.StdoutExporter,
-				Service:  "service-name",
-			},
-			want:   true,
-			expErr: nil,
-		},
-		{
-			name: "setup noop exporter",
-			config: tracing.Config{
-				Enabled:  true,
-				Exporter: tracing.NoOpExporter,
-				Service:  "service-name",
-			},
-
-			want:   true,
-			expErr: nil,
-		},
-		{
-			name: "setup otlp_grpc insecure exporter",
-			config: tracing.Config{
-				Enabled:  true,
-				Exporter: tracing.OTLPgRPCExporter,
-				Service:  "service-name",
-				Endpoint: "test-endpoint.com:4317",
-			},
-			want:   true,
-			expErr: nil,
-		},
-		{
-			name: "setup otlp_grpc secure exporter with valid rsa root ca certificate",
-			config: tracing.Config{
-				Enabled:          true,
-				Exporter:         tracing.OTLPgRPCExporter,
-				Service:          "service-name",
-				Endpoint:         "test-endpoint.com:4317",
-				ServerCaCertPool: readCertPoolByPath(t, "../testdata/tracing/valid_google_globalsign_r4_rsa_root_ca.pem"),
-			},
-			want:   true,
-			expErr: nil,
-		},
-		{
-			name: "setup otlp_grpc secure exporter with valid ecdsa root ca certificate",
-			config: tracing.Config{
-				Enabled:          true,
-				Exporter:         tracing.OTLPgRPCExporter,
-				Service:          "service-name",
-				Endpoint:         "test-endpoint.com:4317",
-				ServerCaCertPool: readCertPoolByPath(t, "../testdata/tracing/valid_google_gts_r4_ecdsa_root_ca.pem"),
-			},
-			want:   true,
-			expErr: nil,
-		},
-		{
-			name: "setup otlp_grpc secure exporter with invalid root ca certificate",
-			config: tracing.Config{
-				Enabled:          true,
-				Exporter:         tracing.OTLPgRPCExporter,
-				Service:          "service-name",
-				Endpoint:         "test-endpoint.com:4317",
-				ServerCaCertPool: readCertPoolByPath(t, "../testdata/tracing/invalid_root_ca.pem"),
-			},
-			want:   false,
-			expErr: tracing.ErrEmptyServerRootCaPool,
-		},
-		{
-			name: "setup otlp_grpc secure exporter with empty root ca certificate",
-			config: tracing.Config{
-				Enabled:          true,
-				Exporter:         tracing.OTLPgRPCExporter,
-				Service:          "service-name",
-				Endpoint:         "test-endpoint.com:4317",
-				ServerCaCertPool: readCertPoolByPath(t, "../testdata/tracing/invalid_empty_root_ca.pem"),
-			},
-			want:   false,
-			expErr: tracing.ErrEmptyServerRootCaPool,
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			got, err := tracing.Setup(context.Background(), tt.config)
-			require.ErrorIs(t, err, tt.expErr)
-			if got != tt.want {
-				t.Errorf("Setup config = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}
-
-func readCertPoolByPath(t *testing.T, path string) *x509.CertPool {
-	ca, err := os.ReadFile(path)
-	require.NoError(t, err)
-	roots := x509.NewCertPool()
-	_ = roots.AppendCertsFromPEM(ca)
-	return roots
-}