[#17 ] config: Add resource attributes

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
[#11 ] Add license and README
2024-11-12 11:23:07 +03:00 · 2024-11-08 15:06:58 +03:00 · 2024-09-09 14:43:14 +03:00 · 2024-07-05 10:37:41 +03:00 · 2024-07-05 10:37:40 +03:00 · 2024-07-05 10:35:11 +03:00
39 changed files with 3140 additions and 22 deletions
--- a/.forgejo/workflows/dco.yml
+++ b/.forgejo/workflows/dco.yml
@ -0,0 +1,21 @@
+name: DCO action
+on: [pull_request]
+
+jobs:
+  dco:
+    name: DCO
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.22'
+
+      - name: Run commit format checker
+        uses: https://git.frostfs.info/TrueCloudLab/dco-go@v3
+        with:
+          from: 'origin/${{ github.event.pull_request.base.ref }}'
--- a/.forgejo/workflows/tests.yml
+++ b/.forgejo/workflows/tests.yml
@ -0,0 +1,73 @@
+name: Tests and linters
+on: [pull_request]
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.22'
+          cache: true
+
+      - name: Install linters
+        run: make lint-install
+
+      - name: Run linters
+        run: make lint
+
+  tests:
+    name: Tests
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go_versions: [ '1.21', '1.22' ]
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '${{ matrix.go_versions }}'
+          cache: true
+
+      - name: Run tests
+        run: make test
+
+  tests-race:
+    name: Tests with -race
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.22'
+          cache: true
+
+      - name: Run tests
+        run: go test ./... -count=1 -race
+
+  staticcheck:
+    name: Staticcheck
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.22'
+          cache: true
+
+      - name: Install staticcheck
+        run: make staticcheck-install
+
+      - name: Run staticcheck
+        run: make staticcheck-run
--- a/.gitlint
+++ b/.gitlint
@ -1,11 +0,0 @@
-[general]
-fail-without-commits=True
-regex-style-search=True
-contrib=CC1
-
-[title-match-regex]
-regex=^\[\#[0-9Xx]+\]\s
-
-[ignore-by-title]
-regex=^Release(.*)
-ignore=title-match-regex
--- a/.golangci.yml
+++ b/.golangci.yml
@ -25,7 +25,7 @@ linters-settings:
    # report about shadowed variables
    check-shadowing: false
  staticcheck:
-    checks: ["all", "-SA1019"] # TODO Enable SA1019 after deprecated warning are fixed.
+    checks: ["all"]
  funlen:
    lines: 80 # default 60
    statements: 60 # default 40
@ -52,7 +52,7 @@ linters:
    - durationcheck
    - exhaustive
    - exportloopref
-    - gofmt
+    - gofumpt
    - goimports
    - misspell
    - predeclared
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@ -2,13 +2,6 @@ ci:
  autofix_prs: false

 repos:
-  - repo: https://github.com/jorisroovers/gitlint
-    rev:  v0.19.1
-    hooks:
-      - id: gitlint
-        stages: [commit-msg]
-      - id: gitlint-ci
-
  - repo: https://github.com/pre-commit/pre-commit-hooks
    rev: v4.4.0
    hooks:
@ -31,7 +24,7 @@ repos:
      - id: shellcheck

  - repo: https://github.com/golangci/golangci-lint
-    rev: v1.51.2
+    rev: v1.59.1
    hooks:
      - id: golangci-lint

@ -39,7 +32,7 @@ repos:
    hooks:
       - id: go-unit-tests
         name: go unit tests
-         entry: make test
+         entry: make test GOFLAGS=''
         pass_filenames: false
         types: [go]
         language: system
--- a/201
+++ b/201
@ -0,0 +1,201 @@
+                                 Apache License
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+                        http://www.apache.org/licenses/
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+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+   2. Grant of Copyright License. Subject to the terms and conditions of
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+      the terms of any separate license agreement you may have executed
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+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
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+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      PARTICULAR PURPOSE. You are solely responsible for determining the
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+      risks associated with Your exercise of permissions under this License.
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
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+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
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+      Work (including but not limited to damages for loss of goodwill,
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+      has been advised of the possibility of such damages.
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+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
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+
+   Unless required by applicable law or agreed to in writing, software
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--- a/64
+++ b/64
@ -0,0 +1,64 @@
+#!/usr/bin/make -f
+SHELL = bash
+
+TRUECLOUDLAB_LINT_VERSION ?= 0.0.3
+TMP_DIR := .cache
+OUTPUT_LINT_DIR ?= $(shell pwd)/bin
+LINT_VERSION ?= 1.59.1
+LINT_DIR = $(OUTPUT_LINT_DIR)/golangci-lint-$(LINT_VERSION)-v$(TRUECLOUDLAB_LINT_VERSION)
+
+# Run all code formatters
+fmts: fmt imports
+
+# Reformat code
+fmt:
+	@echo "⇒ Processing gofmt check"
+	@gofumpt -s -w .
+
+# Reformat imports
+imports:
+	@echo "⇒ Processing goimports check"
+	@goimports -w .
+
+# Run Unit Test with go test
+test: GOFLAGS ?= "-count=1"
+test:
+	@echo "⇒ Running go test"
+	@GOFLAGS="$(GOFLAGS)" go test ./...
+
+# Activate pre-commit hooks
+pre-commit:
+	pre-commit install -t pre-commit -t commit-msg
+
+# Deactivate pre-commit hooks
+unpre-commit:
+	pre-commit uninstall -t pre-commit -t commit-msg
+
+pre-commit-run:
+	@pre-commit run -a --hook-stage manual
+
+# Install linters
+lint-install:
+	@mkdir -p $(TMP_DIR)
+	@rm -rf $(TMP_DIR)/linters
+	@git -c advice.detachedHead=false clone --branch v$(TRUECLOUDLAB_LINT_VERSION) https://git.frostfs.info/TrueCloudLab/linters.git $(TMP_DIR)/linters
+	@make -C $(TMP_DIR)/linters lib CGO_ENABLED=1 OUT_DIR=$(OUTPUT_LINT_DIR)
+	@rm -rf $(TMP_DIR)/linters
+	@rmdir $(TMP_DIR) 2>/dev/null || true
+	@CGO_ENABLED=1 GOBIN=$(LINT_DIR) go install github.com/golangci/golangci-lint/cmd/golangci-lint@v$(LINT_VERSION)
+
+# Run linters
+lint:
+	@if [ ! -d "$(LINT_DIR)" ]; then \
+		echo "Run make lint-install"; \
+		exit 1; \
+	fi
+	@$(LINT_DIR)/golangci-lint run
+
+# Install staticcheck
+staticcheck-install:
+	@go install honnef.co/go/tools/cmd/staticcheck@latest
+
+# Run staticcheck
+staticcheck-run:
+	@staticcheck ./...
--- a/README.md
+++ b/README.md
@ -0,0 +1,22 @@
+# 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.
+```
--- a/go.mod
+++ b/go.mod
@ -0,0 +1,47 @@
+module git.frostfs.info/TrueCloudLab/frostfs-observability
+
+go 1.21
+
+require (
+	github.com/grpc-ecosystem/go-grpc-middleware/providers/prometheus v1.0.0-rc.0
+	github.com/prometheus/client_golang v1.15.1
+	github.com/prometheus/client_model v0.3.0
+	github.com/stretchr/testify v1.9.0
+	go.opentelemetry.io/otel v1.28.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.28.0
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.28.0
+	go.opentelemetry.io/otel/sdk v1.28.0
+	go.opentelemetry.io/otel/trace v1.28.0
+	google.golang.org/grpc v1.64.0
+	google.golang.org/protobuf v1.34.2
+)
+
+require (
+	github.com/google/uuid v1.6.0 // indirect
+	go.uber.org/multierr v1.10.0 // indirect
+)
+
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.0.0-rc.3 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/common v0.42.0 // indirect
+	github.com/prometheus/procfs v0.9.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.28.0 // indirect
+	go.opentelemetry.io/otel/metric v1.28.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.3.1 // indirect
+	go.uber.org/zap v1.26.0
+	golang.org/x/net v0.26.0 // indirect
+	golang.org/x/sys v0.22.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
+	google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,458 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
+cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
+cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
+cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
+cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
+cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
+cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
+cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
+cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
+cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
+cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
+cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
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--- a/logging/lokicore/core.go
+++ b/logging/lokicore/core.go
@ -0,0 +1,67 @@
+package lokicore
+
+import (
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/logging/lokicore/loki"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+)
+
+// Zap Core for loki.
+// Expands the zapcore.Core interface with calls to export logs to Loki.
+type LokiCore struct {
+	original zapcore.Core
+	encoder  zapcore.Encoder
+	loki     *loki.Client
+}
+
+func New(original zapcore.Core, lokiCfg loki.Config) *LokiCore {
+	encoderConfig := zap.NewProductionEncoderConfig()
+	encoder := zapcore.NewJSONEncoder(encoderConfig)
+	encoderConfig.EncodeTime = zapcore.TimeEncoderOfLayout(time.RFC3339Nano)
+
+	return &LokiCore{
+		original: original,
+		encoder:  encoder,
+		loki:     loki.Setup(lokiCfg),
+	}
+}
+
+func (c *LokiCore) With(fields []zapcore.Field) zapcore.Core {
+	return &LokiCore{
+		original: c.original.With(fields),
+		encoder:  c.encoder,
+		loki:     c.loki,
+	}
+}
+
+func (c *LokiCore) Write(entry zapcore.Entry, fields []zapcore.Field) error {
+	if err := c.original.Write(entry, fields); err != nil {
+		return err
+	}
+
+	buffer, err := c.encoder.EncodeEntry(entry, fields)
+	defer buffer.Free()
+
+	if err != nil {
+		return err
+	}
+
+	return c.loki.Send(buffer.String(), entry.Time)
+}
+
+func (c *LokiCore) Check(entry zapcore.Entry, checked *zapcore.CheckedEntry) *zapcore.CheckedEntry {
+	if c.Enabled(entry.Level) {
+		return checked.AddCore(entry, c)
+	}
+	return checked
+}
+
+func (c *LokiCore) Sync() error {
+	return c.original.Sync()
+}
+
+func (c *LokiCore) Enabled(level zapcore.Level) bool {
+	return c.original.Enabled(level)
+}
--- a/logging/lokicore/loki/README.md
+++ b/logging/lokicore/loki/README.md
@ -0,0 +1,32 @@
+# git.frostfs.info/TrueCloudLab/frostfs-observability/loki"
+
+A simple asynchronous client in Go for sending logs to Loki.
+
+## Usage
+
+```go
+package main
+
+import (
+
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/logging/lokicore/loki"
+)
+
+func main() {
+	loki := loki.Setup(loki.Config{
+		Address: "localhost:3100/api/prom/push",
+		Labels: map[string]string{
+			"label": "test",
+		},
+		BatchWait:          1000,
+		BatchEntriesNumber: 200,
+		Enabled:            true,
+	})
+    defer loki.Shutdown()
+
+    loki.Send("log message", time.Now())
+}
+
+```
--- a/logging/lokicore/loki/example/main.go
+++ b/logging/lokicore/loki/example/main.go
@ -0,0 +1,50 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"sync"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/logging/lokicore/loki"
+)
+
+var wg sync.WaitGroup
+
+const (
+	countMsgGroup = 100
+	countMsg      = 500000
+)
+
+func send(loki *loki.Client) {
+	wg.Add(1)
+	defer wg.Done()
+
+	for j := 0; j < countMsg/countMsgGroup; j++ {
+		for i := 0; i < countMsgGroup; i++ {
+			err := loki.Send(strconv.Itoa(j)+" "+strconv.Itoa(i)+" test log message", time.Now())
+			if err != nil {
+				fmt.Fprintf(os.Stderr, "send: %v", err)
+			}
+		}
+		time.Sleep(20 * time.Millisecond)
+	}
+}
+
+func main() {
+	loki := loki.Setup(loki.Config{
+		Endpoint: "localhost:3100/api/prom/push",
+		Labels: map[string]string{
+			"label": "test",
+		},
+		BatchWait:          1000,
+		BatchEntriesNumber: 200,
+		Enabled:            true,
+	})
+	go send(loki)
+	send(loki)
+
+	wg.Wait()
+	loki.Shutdown()
+}
--- a/logging/lokicore/loki/log.go
+++ b/logging/lokicore/loki/log.go
@ -0,0 +1,108 @@
+package loki
+
+import (
+	"errors"
+	"strconv"
+	"time"
+)
+
+// Send sends the message to the loki server.
+// If the client is disabled, it returns error.
+// If the entries channel is full, the message is discarded and returns error.
+func (client *Client) Send(msg string, timestamp time.Time) error {
+	if !client.IsEnabled() {
+		client.missedMessages++
+		return errors.New("client disabled")
+	}
+
+	if client.addToEntries(timestamp, msg) {
+		if client.missedMessages > 0 {
+			client.addToEntries(time.Now(), strconv.FormatInt(client.missedMessages, 10)+" messages missed")
+			client.missedMessages = 0
+		}
+	} else {
+		client.missedMessages++
+		return errors.New("channel is full")
+	}
+
+	return nil
+}
+
+// addToEntries attempts to add a log entry to the entries channel.
+// It returns true if the entry was added successfully, and false otherwise.
+func (client *Client) addToEntries(timestamp time.Time, msg string) bool {
+	select {
+	case client.entries <- logEntry{
+		Ts:   timestamp,
+		Line: msg,
+	}:
+		return true
+	default:
+		return false
+	}
+}
+
+// run manages the sending of log batches to Loki.
+// It collects log entries into batches and sends them either when a batch is full,
+// or when the maximum wait time has elapsed.
+func (client *Client) run() {
+	if !client.IsEnabled() {
+		client.drainEntries()
+		return
+	}
+
+	client.waitGroup.Add(1)
+	defer client.waitGroup.Done()
+
+	var batch []logEntry
+	maxWait := time.NewTimer(client.config.BatchWait)
+
+	for {
+		select {
+		case <-client.quit:
+			for len(client.entries) > 0 {
+				entry := <-client.entries
+				batch = append(batch, entry)
+			}
+			batch = client.processMissedMessages(batch)
+			client.processBatch(batch)
+			return
+
+		case entry := <-client.entries:
+			batch = append(batch, entry)
+			if len(batch) >= client.config.BatchEntriesNumber {
+				batch = client.processBatch(batch)
+				maxWait.Reset(client.config.BatchWait)
+			}
+
+		case <-maxWait.C:
+			batch = client.processBatch(batch)
+			maxWait.Reset(client.config.BatchWait)
+		}
+	}
+}
+
+func (client *Client) drainEntries() {
+	for len(client.entries) > 0 {
+		<-client.entries
+	}
+}
+
+func (client *Client) processBatch(batch []logEntry) []logEntry {
+	if len(batch) > 0 {
+		client.sendLogs(batch)
+		batch = batch[:0]
+	}
+	return batch
+}
+
+func (client *Client) processMissedMessages(batch []logEntry) []logEntry {
+	if client.missedMessages > 0 {
+		batch = append(batch, logEntry{
+			Ts:   time.Now(),
+			Line: strconv.FormatInt(client.missedMessages, 10) + " messages missed",
+		})
+		client.missedMessages = 0
+	}
+	return batch
+}
--- a/logging/lokicore/loki/send.go
+++ b/logging/lokicore/loki/send.go
@ -0,0 +1,66 @@
+package loki
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+func (client *Client) sendLogs(entries []logEntry) {
+	if len(entries) == 0 {
+		return
+	}
+
+	var streams []stream
+	stream := stream{
+		Labels:  client.config.Labels,
+		Entries: entries,
+	}
+	streams = append(streams, stream)
+
+	msg := promtailMsg{Streams: streams}
+	jsonMsg, err := json.Marshal(msg)
+	if err != nil {
+		return
+	}
+
+	client.mutex.RLock()
+	endpoint := client.config.Endpoint
+	client.mutex.RUnlock()
+
+	client.sendRequest("POST", endpoint, "application/json", jsonMsg)
+}
+
+func (client *Client) sendRequest(method, url string, ctype string, reqBody []byte) {
+	req, err := http.NewRequest(method, url, bytes.NewBuffer(reqBody))
+	if err != nil {
+		return
+	}
+
+	req.Header.Set("Content-Type", ctype)
+
+	resp, _ := client.client.Do(req)
+	if resp != nil {
+		defer resp.Body.Close()
+	}
+}
+
+func (p *stream) MarshalJSON() ([]byte, error) {
+	return json.Marshal(&struct {
+		Labels  string     `json:"labels"`
+		Entries []logEntry `json:"entries"`
+	}{
+		Labels:  p.Labels.String(),
+		Entries: p.Entries,
+	})
+}
+
+func (l labels) String() string {
+	var labelPairs []string
+	for key, value := range l {
+		labelPairs = append(labelPairs, fmt.Sprintf(`%s="%s"`, key, value))
+	}
+	return fmt.Sprintf("{%s}", strings.Join(labelPairs, ","))
+}
--- a/logging/lokicore/loki/setup.go
+++ b/logging/lokicore/loki/setup.go
@ -0,0 +1,96 @@
+package loki
+
+import (
+	"net/http"
+	"regexp"
+	"sync"
+	"time"
+)
+
+const logEntriesChanSize = 5000
+
+// Represents a single log entry.
+type logEntry struct {
+	Ts   time.Time `json:"ts"`
+	Line string    `json:"line"`
+}
+
+type labels map[string]string
+
+// Stream represents a stream of log entries with associated labels.
+type stream struct {
+	Labels  labels     `json:"-"`
+	Entries []logEntry `json:"entries"`
+}
+
+type promtailMsg struct {
+	Streams []stream `json:"streams"`
+}
+
+// Client is a client for sending log entries.
+type Client struct {
+	config         Config
+	quit           chan struct{}
+	entries        chan logEntry
+	waitGroup      sync.WaitGroup
+	client         http.Client
+	missedMessages int64
+	mutex          sync.RWMutex
+}
+
+type Config struct {
+	Enabled bool
+	// E.g. localhost:3100/api/prom/push.
+	Endpoint string
+	Labels   map[string]string
+	// Maximum message buffering time.
+	BatchWait time.Duration
+	// Maximum number of messages in the queue.
+	BatchEntriesNumber int
+}
+
+// Setup initializes the client with the given configuration and starts the processing goroutine.
+// It is the caller's responsibility to call Shutdown() to free resources.
+func Setup(conf Config) *Client {
+	client := newClient()
+	client.config = conf
+	client.config.Endpoint = normalizeURL(client.config.Endpoint)
+	go client.run()
+	return client
+}
+
+// Shutdown stops the client and waits for all logs to be sent.
+func (client *Client) Shutdown() {
+	client.mutex.Lock()
+	client.config.Enabled = false
+	client.mutex.Unlock()
+
+	close(client.quit)
+	client.waitGroup.Wait()
+}
+
+// IsEnabled checks whether the client is enabled.
+func (client *Client) IsEnabled() bool {
+	client.mutex.RLock()
+	defer client.mutex.RUnlock()
+	return client.config.Enabled
+}
+
+func newClient() *Client {
+	return &Client{
+		quit:      make(chan struct{}),
+		entries:   make(chan logEntry, logEntriesChanSize),
+		client:    http.Client{},
+		config:    Config{Enabled: false},
+		mutex:     sync.RWMutex{},
+		waitGroup: sync.WaitGroup{},
+	}
+}
+
+func normalizeURL(host string) string {
+	if !regexp.MustCompile(`^https?:\/\/`).MatchString(host) {
+		host = "http://" + host
+	}
+
+	return host
+}
--- a/metrics/desc.go
+++ b/metrics/desc.go
@ -0,0 +1,105 @@
+package metrics
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+)
+
+// Descriptions contains metric Description suitable for further processing.
+// The only reason for it to exist is `prometheus.Desc` disallowing field access directly.
+// https://github.com/prometheus/client_golang/pull/326
+// https://github.com/prometheus/client_golang/issues/516
+// https://github.com/prometheus/client_golang/issues/222
+type Description struct {
+	Name           string            `json:"name"`
+	Help           string            `json:"help"`
+	Type           string            `json:"type"`
+	ConstantLabels prometheus.Labels `json:"constant_labels,omitempty"`
+	VariableLabels []string          `json:"variable_labels,omitempty"`
+}
+
+// NewGauge returns new registered prometheus.Gauge.
+func NewGauge(opts prometheus.GaugeOpts) prometheus.Gauge {
+	value := prometheus.NewGauge(opts)
+	MustRegister(value, Description{
+		Name:           prometheus.BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		Type:           dto.MetricType_GAUGE.String(),
+		Help:           opts.Help,
+		ConstantLabels: opts.ConstLabels,
+	})
+	return value
+}
+
+// NewGaugeVec returns new registered *prometheus.GaugeVec.
+func NewGaugeVec(opts prometheus.GaugeOpts, labelNames []string) *prometheus.GaugeVec {
+	value := prometheus.NewGaugeVec(opts, labelNames)
+	MustRegister(value, Description{
+		Name:           prometheus.BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		Type:           dto.MetricType_GAUGE.String(),
+		Help:           opts.Help,
+		ConstantLabels: opts.ConstLabels,
+		VariableLabels: labelNames,
+	})
+
+	return value
+}
+
+// NewGaugeFunc returns new registered prometheus.GaugeFunc.
+func NewGaugeFunc(opts prometheus.GaugeOpts, f func() float64) prometheus.GaugeFunc {
+	value := prometheus.NewGaugeFunc(opts, f)
+	MustRegister(value, Description{
+		Name:           prometheus.BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		Type:           dto.MetricType_GAUGE.String(),
+		Help:           opts.Help,
+		ConstantLabels: opts.ConstLabels,
+	})
+	return value
+}
+
+// NewCounter returns new registered prometheus.Counter.
+func NewCounter(opts prometheus.CounterOpts) prometheus.Counter {
+	value := prometheus.NewCounter(opts)
+	MustRegister(value, Description{
+		Name:           prometheus.BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		Type:           dto.MetricType_COUNTER.String(),
+		Help:           opts.Help,
+		ConstantLabels: opts.ConstLabels,
+	})
+	return value
+}
+
+// NewCounterVec returns new registered *prometheus.CounterVec.
+func NewCounterVec(opts prometheus.CounterOpts, labels []string) *prometheus.CounterVec {
+	value := prometheus.NewCounterVec(opts, labels)
+	MustRegister(value, Description{
+		Name:           prometheus.BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		Type:           dto.MetricType_COUNTER.String(),
+		Help:           opts.Help,
+		ConstantLabels: opts.ConstLabels,
+		VariableLabels: labels,
+	})
+	return value
+}
+
+// NewHistogramVec returns new registered *prometheus.HistogramVec.
+func NewHistogramVec(opts prometheus.HistogramOpts, labelNames []string) *prometheus.HistogramVec {
+	value := prometheus.NewHistogramVec(opts, labelNames)
+	MustRegister(value, Description{
+		Name:           prometheus.BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
+		Type:           dto.MetricType_HISTOGRAM.String(),
+		Help:           opts.Help,
+		ConstantLabels: opts.ConstLabels,
+		VariableLabels: labelNames,
+	})
+	return value
+}
+
+// DescribeAll returns descriptions for all registered metrics.
+func DescribeAll() []Description {
+	registeredDescriptionsMtx.Lock()
+	defer registeredDescriptionsMtx.Unlock()
+
+	ds := make([]Description, len(registeredDescriptions))
+	copy(ds, registeredDescriptions)
+	return ds
+}
--- a/metrics/desc_test.go
+++ b/metrics/desc_test.go
@ -0,0 +1,64 @@
+package metrics
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/stretchr/testify/require"
+)
+
+func TestDescribeAll(t *testing.T) {
+	const (
+		namespace = "my_ns"
+		subsystem = "mysub"
+	)
+	NewCounter(prometheus.CounterOpts{
+		Namespace: namespace,
+		Subsystem: subsystem,
+		Name:      "my_counter",
+	})
+
+	labels := []string{"label1", "label2"}
+	NewGaugeVec(prometheus.GaugeOpts{
+		Namespace: namespace,
+		Subsystem: subsystem,
+		Name:      "my_gauge",
+	}, labels)
+
+	constLabels := prometheus.Labels{
+		"const1": "abc",
+		"const2": "xyz",
+	}
+	NewCounter(prometheus.CounterOpts{
+		Namespace:   namespace,
+		Subsystem:   subsystem,
+		Name:        "with_const_labels",
+		ConstLabels: constLabels,
+	})
+
+	descriptions := DescribeAll()
+
+	seen := make(map[string]bool)
+	for i := range descriptions {
+		if !strings.HasPrefix(descriptions[i].Name, namespace) {
+			continue
+		}
+
+		require.False(t, seen[descriptions[i].Name], "metric %s was seen twice", descriptions[i].Name)
+		seen[descriptions[i].Name] = true
+
+		switch descriptions[i].Name {
+		case prometheus.BuildFQName(namespace, subsystem, "my_counter"):
+			require.True(t, len(descriptions[i].VariableLabels) == 0)
+		case prometheus.BuildFQName(namespace, subsystem, "my_gauge"):
+			require.Equal(t, labels, descriptions[i].VariableLabels)
+		case prometheus.BuildFQName(namespace, subsystem, "with_const_labels"):
+			require.Equal(t, len(constLabels), len(descriptions[i].ConstantLabels))
+			require.Equal(t, constLabels, descriptions[i].ConstantLabels)
+		default:
+			require.FailNow(t, "unexpected metric name: %s", descriptions[i].Name)
+		}
+	}
+	require.Equal(t, 3, len(seen), "not all registered metrics were iterated over")
+}
--- a/metrics/grpc/client.go
+++ b/metrics/grpc/client.go
@ -0,0 +1,72 @@
+package grpc
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/metrics"
+	grpcprom "github.com/grpc-ecosystem/go-grpc-middleware/providers/prometheus"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"google.golang.org/grpc"
+)
+
+var clientMetrics = grpcprom.NewClientMetrics(
+	grpcprom.WithClientHandlingTimeHistogram(
+		grpcprom.WithHistogramBuckets(prometheus.DefBuckets),
+	),
+	grpcprom.WithClientStreamRecvHistogram(
+		grpcprom.WithHistogramBuckets(prometheus.DefBuckets),
+	),
+)
+
+func init() {
+	// Description copied from repository of grpc-ecosystem
+	// https://github.com/grpc-ecosystem/go-grpc-middleware/blob/71d7422112b1d7fadd4b8bf12a6f33ba6d22e98e/providers/prometheus/client_metrics.go#L31
+	descs := []metrics.Description{
+		{
+			Name:           "grpc_client_started_total",
+			Type:           dto.MetricType_COUNTER.String(),
+			Help:           "Total number of RPCs started on the client.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
+		},
+		{
+			Name:           "grpc_client_handled_total",
+			Type:           dto.MetricType_COUNTER.String(),
+			Help:           "Total number of RPCs completed by the client, regardless of success or failure.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method", "grpc_code"},
+		},
+		{
+			Name:           "grpc_client_msg_received_total",
+			Type:           dto.MetricType_COUNTER.String(),
+			Help:           "Total number of RPC stream messages received by the client.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
+		},
+		{
+			Name:           "grpc_client_msg_sent_total",
+			Type:           dto.MetricType_COUNTER.String(),
+			Help:           "Total number of gRPC stream messages sent by the client.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
+		},
+		{
+			Name:           "grpc_client_handling_seconds",
+			Type:           dto.MetricType_HISTOGRAM.String(),
+			Help:           "Histogram of response latency (seconds) of the gRPC until it is finished by the application.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
+		},
+		{
+			Name:           "grpc_client_msg_recv_handling_seconds",
+			Type:           dto.MetricType_HISTOGRAM.String(),
+			Help:           "Histogram of response latency (seconds) of the gRPC single message receive.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
+		},
+	}
+	metrics.MustRegister(clientMetrics, descs...)
+}
+
+// NewUnaryClientInterceptor returns client interceptor to collect metrics from unary RPCs.
+func NewUnaryClientInterceptor() grpc.UnaryClientInterceptor {
+	return clientMetrics.UnaryClientInterceptor()
+}
+
+// NewStreamClientInterceptor returns client interceptor to collect metrics from stream RPCs.
+func NewStreamClientInterceptor() grpc.StreamClientInterceptor {
+	return clientMetrics.StreamClientInterceptor()
+}
--- a/metrics/grpc/server.go
+++ b/metrics/grpc/server.go
@ -0,0 +1,63 @@
+package grpc
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/metrics"
+	grpcprom "github.com/grpc-ecosystem/go-grpc-middleware/providers/prometheus"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"google.golang.org/grpc"
+)
+
+var serverMetrics = grpcprom.NewServerMetrics(
+	grpcprom.WithServerHandlingTimeHistogram(
+		grpcprom.WithHistogramBuckets(prometheus.DefBuckets),
+	),
+)
+
+func init() {
+	// Description copied from grpc-ecosystem:
+	// https://github.com/grpc-ecosystem/go-grpc-middleware/blob/71d7422112b1d7fadd4b8bf12a6f33ba6d22e98e/providers/prometheus/server_metrics.go#L26
+	descs := []metrics.Description{
+		{
+			Name:           "grpc_server_started_total",
+			Type:           dto.MetricType_COUNTER.String(),
+			Help:           "Total number of RPCs started on the server.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
+		},
+		{
+			Name:           "grpc_server_handled_total",
+			Type:           dto.MetricType_COUNTER.String(),
+			Help:           "Total number of RPCs completed on the server, regardless of success or failure.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method", "grpc_code"},
+		},
+		{
+			Name:           "grpc_server_msg_received_total",
+			Type:           dto.MetricType_COUNTER.String(),
+			Help:           "Total number of RPC stream messages received on the server.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
+		},
+		{
+			Name:           "grpc_server_msg_sent_total",
+			Type:           dto.MetricType_COUNTER.String(),
+			Help:           "Total number of gRPC stream messages sent by the server.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
+		},
+		{
+			Name:           "grpc_server_handling_seconds",
+			Type:           dto.MetricType_HISTOGRAM.String(),
+			Help:           "Histogram of response latency (seconds) of gRPC that had been application-level handled by the server.",
+			VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
+		},
+	}
+	metrics.MustRegister(serverMetrics, descs...)
+}
+
+// NewUnaryServerInterceptor returns server interceptor to collect metrics from unary RPCs.
+func NewUnaryServerInterceptor() grpc.UnaryServerInterceptor {
+	return serverMetrics.UnaryServerInterceptor()
+}
+
+// NewStreamServerInterceptor returns server interceptor to collect metrics from stream RPCs.
+func NewStreamServerInterceptor() grpc.StreamServerInterceptor {
+	return serverMetrics.StreamServerInterceptor()
+}
--- a/metrics/registry.go
+++ b/metrics/registry.go
@ -0,0 +1,44 @@
+package metrics
+
+import (
+	"net/http"
+	"sync"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/collectors"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+var (
+	registry = prometheus.NewRegistry()
+	// registeredDescriptionsMtx protects collectors slice.
+	// It should not be acessed concurrently, but we can easily forget this in future, thus this mutex.
+	registeredDescriptionsMtx sync.Mutex
+	registeredDescriptions    []Description
+)
+
+func init() {
+	registry.MustRegister(collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}))
+	registry.MustRegister(collectors.NewGoCollector())
+}
+
+// Register registers custom collectors to registry.
+// Should be used with metrics from other packages.
+func Register(customCollectors ...prometheus.Collector) {
+	registry.MustRegister(customCollectors...)
+}
+
+func MustRegister(c prometheus.Collector, descs ...Description) {
+	registry.MustRegister(c)
+	registeredDescriptionsMtx.Lock()
+	defer registeredDescriptionsMtx.Unlock()
+	registeredDescriptions = append(registeredDescriptions, descs...)
+}
+
+// Handler returns an http.Handler for the local registry.
+func Handler() http.Handler {
+	promhttp.Handler()
+	return promhttp.InstrumentMetricHandler(
+		registry,
+		promhttp.HandlerFor(registry, promhttp.HandlerOpts{}))
+}
--- a/testdata/tracing/invalid_empty_root_ca.pem
+++ b/testdata/tracing/invalid_empty_root_ca.pem
--- a/testdata/tracing/invalid_root_ca.pem
+++ b/testdata/tracing/invalid_root_ca.pem
@ -0,0 +1 @@
+invalid content
--- a/testdata/tracing/valid_google_globalsign_r4_rsa_root_ca.pem
+++ b/testdata/tracing/valid_google_globalsign_r4_rsa_root_ca.pem
@ -0,0 +1,12 @@
+-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
--- a/testdata/tracing/valid_google_gts_r4_ecdsa_root_ca.pem
+++ b/testdata/tracing/valid_google_gts_r4_ecdsa_root_ca.pem
@ -0,0 +1,13 @@
+-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
--- a/tracing/config.go
+++ b/tracing/config.go
@ -0,0 +1,90 @@
+package tracing
+
+import (
+	"crypto/x509"
+	"fmt"
+	"maps"
+)
+
+// Exporter is type of tracing target.
+type Exporter string
+
+const (
+	StdoutExporter   Exporter = "stdout"
+	OTLPgRPCExporter Exporter = "otlp_grpc"
+	NoOpExporter     Exporter = "noop"
+)
+
+type Config struct {
+	// Enabled is true, if tracing enabled.
+	Enabled bool
+	// Exporter is collector type.
+	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.
+	Service string
+	// InstanceID is identity of service instance.
+	// Optional.
+	InstanceID string
+	// 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 {
+	if !c.Enabled {
+		return nil
+	}
+
+	if c.Exporter != StdoutExporter && c.Exporter != OTLPgRPCExporter && c.Exporter != NoOpExporter {
+		return fmt.Errorf("tracing config error: unknown exporter '%s', valid values are %v",
+			c.Exporter, []string{string(StdoutExporter), string(OTLPgRPCExporter), string(NoOpExporter)})
+	}
+
+	if len(c.Service) == 0 {
+		return fmt.Errorf("tracing config error: service name must be specified")
+	}
+
+	if c.Exporter == OTLPgRPCExporter && len(c.Endpoint) == 0 {
+		return fmt.Errorf("tracing config error: exporter '%s' requires endpoint", c.Exporter)
+	}
+
+	return nil
+}
+
+func (c *Config) hasChange(other *Config) bool {
+	if !c.Enabled && !other.Enabled {
+		return false
+	}
+	if c.Enabled != other.Enabled {
+		return true
+	}
+
+	if (c.Exporter == StdoutExporter && other.Exporter == StdoutExporter) ||
+		(c.Exporter == NoOpExporter && other.Exporter == NoOpExporter) {
+		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)
+}
+
+func (c *Config) serviceInfoEqual(other *Config) bool {
+	return c.Service == other.Service &&
+		c.InstanceID == other.InstanceID &&
+		c.Version == other.Version &&
+		maps.Equal(c.Attributes, other.Attributes)
+}
--- a/tracing/config_test.go
+++ b/tracing/config_test.go
@ -0,0 +1,278 @@
+package tracing
+
+import (
+	"crypto/x509"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestConfig_validate(t *testing.T) {
+	tests := []struct {
+		name    string
+		config  Config
+		wantErr bool
+	}{
+		{
+			name:    "disabled",
+			wantErr: false,
+			config: Config{
+				Enabled: false,
+			},
+		},
+		{
+			name:    "stdout",
+			wantErr: false,
+			config: Config{
+				Enabled:    true,
+				Exporter:   StdoutExporter,
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v0.0.1",
+			},
+		},
+		{
+			name:    "noop",
+			wantErr: false,
+			config: Config{
+				Enabled:    true,
+				Exporter:   StdoutExporter,
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v0.0.1",
+			},
+		},
+		{
+			name:    "OTLP gRPC",
+			wantErr: false,
+			config: Config{
+				Enabled:    true,
+				Exporter:   OTLPgRPCExporter,
+				Service:    "test",
+				Endpoint:   "localhost:4717",
+				InstanceID: "s01",
+				Version:    "v0.0.1",
+			},
+		},
+		{
+			name:    "unknown exporter",
+			wantErr: true,
+			config: Config{
+				Enabled:    true,
+				Exporter:   "unknown",
+				Service:    "test",
+				Endpoint:   "localhost:4717",
+				InstanceID: "s01",
+				Version:    "v0.0.1",
+			},
+		},
+		{
+			name:    "no exporter",
+			wantErr: true,
+			config: Config{
+				Enabled:    true,
+				Service:    "test",
+				Endpoint:   "localhost:4717",
+				InstanceID: "s01",
+				Version:    "v0.0.1",
+			},
+		},
+		{
+			name:    "no service",
+			wantErr: true,
+			config: Config{
+				Enabled:    true,
+				Exporter:   OTLPgRPCExporter,
+				Endpoint:   "localhost:4717",
+				InstanceID: "s01",
+				Version:    "v0.0.1",
+			},
+		},
+		{
+			name:    "no endpoint for grpc",
+			wantErr: true,
+			config: Config{
+				Enabled:    true,
+				Exporter:   OTLPgRPCExporter,
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v0.0.1",
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if err := tt.config.validate(); (err != nil) != tt.wantErr {
+				t.Errorf("Config.validate() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}
+
+func TestConfig_hasChange(t *testing.T) {
+	tests := []struct {
+		name   string
+		config Config
+		other  Config
+		want   bool
+	}{
+		{
+			name: "disabled configs always equal",
+			want: false,
+			config: Config{
+				Enabled:    false,
+				Exporter:   StdoutExporter,
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+			other: Config{
+				Enabled:    false,
+				Exporter:   OTLPgRPCExporter,
+				Endpoint:   "localhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+		},
+		{
+			name: "enabled",
+			want: true,
+			config: Config{
+				Enabled:    false,
+				Exporter:   OTLPgRPCExporter,
+				Endpoint:   "localhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+			other: Config{
+				Enabled:    true,
+				Exporter:   OTLPgRPCExporter,
+				Endpoint:   "localhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+		},
+		{
+			name: "disabled",
+			want: true,
+			config: Config{
+				Enabled:    true,
+				Exporter:   OTLPgRPCExporter,
+				Endpoint:   "localhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+			other: Config{
+				Enabled:    false,
+				Exporter:   OTLPgRPCExporter,
+				Endpoint:   "localhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+		},
+		{
+			name: "do not use endpoint for stdout",
+			want: false,
+			config: Config{
+				Enabled:    true,
+				Exporter:   StdoutExporter,
+				Endpoint:   "localhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+			other: Config{
+				Enabled:    true,
+				Exporter:   StdoutExporter,
+				Endpoint:   "otherhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+		},
+		{
+			name: "do not use endpoint for noop",
+			want: false,
+			config: Config{
+				Enabled:    true,
+				Exporter:   NoOpExporter,
+				Endpoint:   "localhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+			other: Config{
+				Enabled:    true,
+				Exporter:   NoOpExporter,
+				Endpoint:   "otherhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+		},
+		{
+			name: "use endpoint for grpc",
+			want: true,
+			config: Config{
+				Enabled:    true,
+				Exporter:   OTLPgRPCExporter,
+				Endpoint:   "localhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				Version:    "v1.0.0",
+			},
+			other: Config{
+				Enabled:    true,
+				Exporter:   OTLPgRPCExporter,
+				Endpoint:   "otherhost:4717",
+				Service:    "test",
+				InstanceID: "s01",
+				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) {
+			if got := tt.config.hasChange(&tt.other); got != tt.want {
+				t.Errorf("Config.equal() = %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()
+	ok := roots.AppendCertsFromPEM(ca)
+	require.True(t, ok)
+	return roots
+}
--- a/tracing/examples/grpc/main.go
+++ b/tracing/examples/grpc/main.go
@ -0,0 +1,107 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net"
+	"sync"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
+	srv "git.frostfs.info/TrueCloudLab/frostfs-observability/tracing/examples/grpc/server"
+	tracing_grpc "git.frostfs.info/TrueCloudLab/frostfs-observability/tracing/grpc"
+	"go.opentelemetry.io/otel/trace"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+type server struct {
+	srv.UnimplementedServerServer
+}
+
+func (s *server) Echo(ctx context.Context, req *srv.Request) (*srv.Response, error) {
+	sc := trace.SpanFromContext(ctx).SpanContext()
+	if !sc.TraceID().IsValid() || !sc.SpanID().IsValid() {
+		return nil, fmt.Errorf("no trace id or span id on server side")
+	}
+	log.Printf("server trace id: %v", sc.TraceID())
+	log.Printf("server span id: %v", sc.SpanID())
+	return &srv.Response{
+		Value: req.GetValue(),
+	}, nil
+}
+
+func verifyClientTraceID(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+	sc := trace.SpanFromContext(ctx).SpanContext()
+	if !sc.TraceID().IsValid() || !sc.SpanID().IsValid() {
+		return fmt.Errorf("no trace id or span id on client side")
+	}
+	log.Printf("client trace id: %v", sc.TraceID())
+	log.Printf("client span id: %v", sc.SpanID())
+	return invoker(ctx, method, req, reply, cc, opts...)
+}
+
+func main() {
+	ctx := context.Background()
+
+	tracingCfg := tracing.Config{
+		Enabled:  true,
+		Exporter: tracing.NoOpExporter,
+		Service:  "example-grpc",
+	}
+	enabled, err := tracing.Setup(ctx, tracingCfg)
+	if err != nil {
+		log.Fatalf("failed to setup tracing: %v", err)
+	}
+	if !enabled {
+		log.Fatalf("failed to enable tracing")
+	}
+
+	lis, err := net.Listen("tcp", ":7000")
+	if err != nil {
+		log.Fatalf("failed to listen: %v", err)
+	}
+	s := grpc.NewServer(
+		grpc.ChainStreamInterceptor(tracing_grpc.NewStreamServerInterceptor()),
+		grpc.ChainUnaryInterceptor(tracing_grpc.NewUnaryServerInterceptor()),
+	)
+	srv.RegisterServerServer(s, &server{})
+
+	wg := &sync.WaitGroup{}
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		if err := s.Serve(lis); err != nil {
+			log.Fatalf("failed to serve: %v", err)
+		}
+	}()
+
+	time.Sleep(1 * time.Second)
+
+	cc, err := grpc.NewClient(":7000",
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithChainUnaryInterceptor(
+			tracing_grpc.NewUnaryClientInteceptor(),
+			verifyClientTraceID,
+		),
+		grpc.WithChainStreamInterceptor(
+			tracing_grpc.NewStreamClientInterceptor(),
+		),
+	)
+	if err != nil {
+		log.Fatalf("failed to dial: %v", err)
+	}
+	client := srv.NewServerClient(cc)
+	resp, err := client.Echo(ctx, &srv.Request{
+		Value: "Hello!",
+	})
+	if err != nil {
+		log.Fatalf("failed to get response: %v", err)
+	}
+	log.Printf("response received: %s", resp.GetValue())
+
+	s.GracefulStop()
+
+	wg.Wait()
+}
--- a/tracing/examples/grpc/server/server.pb.go
+++ b/tracing/examples/grpc/server/server.pb.go
--- a/tracing/examples/grpc/server/server.proto
+++ b/tracing/examples/grpc/server/server.proto
@ -0,0 +1,17 @@
+syntax = "proto3";
+
+package server;
+
+option go_package = "git.frostfs.info/TrueCloudLab/frostfs-observability/tracing/example_grpc/server";
+
+service Server {
+    rpc Echo(Request) returns (Response);
+}
+
+message Request {
+    string value = 1;
+}
+
+message Response {
+    string value = 1;
+}
--- a/tracing/grpc/carrier.go
+++ b/tracing/grpc/carrier.go
@ -0,0 +1,29 @@
+package grpc
+
+import (
+	"google.golang.org/grpc/metadata"
+)
+
+type grpcMetadataCarrier struct {
+	md *metadata.MD
+}
+
+func (c *grpcMetadataCarrier) Get(key string) string {
+	values := c.md.Get(key)
+	if len(values) > 0 {
+		return values[0]
+	}
+	return ""
+}
+
+func (c *grpcMetadataCarrier) Set(key string, value string) {
+	c.md.Set(key, value)
+}
+
+func (c *grpcMetadataCarrier) Keys() []string {
+	result := make([]string, 0, c.md.Len())
+	for key := range *c.md {
+		result = append(result, key)
+	}
+	return result
+}
--- a/tracing/grpc/client.go
+++ b/tracing/grpc/client.go
@ -0,0 +1,76 @@
+package grpc
+
+import (
+	"context"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/metadata"
+)
+
+type clientStream struct {
+	originalStream grpc.ClientStream
+	desc           *grpc.StreamDesc
+	finished       chan<- error
+	done           <-chan struct{}
+}
+
+func newgRPCClientStream(originalStream grpc.ClientStream, desc *grpc.StreamDesc, finished chan<- error, done <-chan struct{}) grpc.ClientStream {
+	return &clientStream{
+		originalStream: originalStream,
+		desc:           desc,
+		finished:       finished,
+		done:           done,
+	}
+}
+
+func (cs *clientStream) Header() (metadata.MD, error) {
+	md, err := cs.originalStream.Header()
+	if err != nil {
+		select {
+		case <-cs.done:
+		case cs.finished <- err:
+		}
+	}
+	return md, err
+}
+
+func (cs *clientStream) Trailer() metadata.MD {
+	return cs.originalStream.Trailer()
+}
+
+func (cs *clientStream) CloseSend() error {
+	err := cs.originalStream.CloseSend()
+	if err != nil {
+		select {
+		case <-cs.done:
+		case cs.finished <- err:
+		}
+	}
+	return err
+}
+
+func (cs *clientStream) Context() context.Context {
+	return cs.originalStream.Context()
+}
+
+func (cs *clientStream) SendMsg(m any) error {
+	err := cs.originalStream.SendMsg(m)
+	if err != nil {
+		select {
+		case <-cs.done:
+		case cs.finished <- err:
+		}
+	}
+	return err
+}
+
+func (cs *clientStream) RecvMsg(m any) error {
+	err := cs.originalStream.RecvMsg(m)
+	if err != nil || !cs.desc.ServerStreams {
+		select {
+		case <-cs.done:
+		case cs.finished <- err:
+		}
+	}
+	return err
+}
--- a/tracing/grpc/interceptors.go
+++ b/tracing/grpc/interceptors.go
@ -0,0 +1,160 @@
+package grpc
+
+import (
+	"context"
+	"io"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	semconv "go.opentelemetry.io/otel/semconv/v1.17.0"
+	"go.opentelemetry.io/otel/trace"
+	"google.golang.org/grpc"
+	grpc_codes "google.golang.org/grpc/codes"
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/status"
+)
+
+// NewUnaryClientInteceptor creates new gRPC unary interceptor to save gRPC client traces.
+func NewUnaryClientInteceptor() grpc.UnaryClientInterceptor {
+	return func(ctx context.Context, method string, req, reply any, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+		ctx, span := startClientSpan(ctx, cc, method)
+		defer span.End()
+
+		err := invoker(ctx, method, req, reply, cc, opts...)
+		if err != nil {
+			grpcStatus, _ := status.FromError(err)
+			span.SetStatus(codes.Error, grpcStatus.Message())
+			span.SetAttributes(semconv.RPCGRPCStatusCodeKey.Int64(int64(grpcStatus.Code())))
+		} else {
+			span.SetStatus(codes.Ok, "")
+			span.SetAttributes(semconv.RPCGRPCStatusCodeKey.Int64(int64(grpc_codes.OK)))
+		}
+
+		return err
+	}
+}
+
+// NewStreamClientInterceptor creates new gRPC stream interceptor to save gRPC client traces.
+func NewStreamClientInterceptor() grpc.StreamClientInterceptor {
+	return func(ctx context.Context, desc *grpc.StreamDesc, cc *grpc.ClientConn, method string, streamer grpc.Streamer, opts ...grpc.CallOption) (grpc.ClientStream, error) {
+		ctx, span := startClientSpan(ctx, cc, method)
+		str, err := streamer(ctx, desc, cc, method, opts...)
+		if err != nil {
+			grpcStatus, _ := status.FromError(err)
+			span.SetStatus(codes.Error, grpcStatus.Message())
+			span.SetAttributes(semconv.RPCGRPCStatusCodeKey.Int64(int64(grpcStatus.Code())))
+			span.End()
+			return str, err
+		}
+
+		finished := make(chan error)
+		done := make(chan struct{})
+		strWrp := newgRPCClientStream(str, desc, finished, done)
+
+		go func() {
+			defer close(done)
+			defer span.End()
+
+			select {
+			case err := <-finished:
+				if err == nil || err == io.EOF {
+					setGRPCSpanStatus(span, nil)
+				} else {
+					setGRPCSpanStatus(span, err)
+				}
+				return
+			case <-ctx.Done():
+				setGRPCSpanStatus(span, ctx.Err())
+				return
+			}
+		}()
+
+		return strWrp, nil
+	}
+}
+
+// NewUnaryServerInterceptor creates new gRPC unary interceptor to save gRPC server traces.
+func NewUnaryServerInterceptor() grpc.UnaryServerInterceptor {
+	return func(ctx context.Context, req any, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
+		ctx = extractGRPCTraceInfo(ctx)
+		var span trace.Span
+		ctx, span = tracing.StartSpanFromContext(ctx, info.FullMethod,
+			trace.WithAttributes(
+				semconv.RPCSystemGRPC,
+				semconv.RPCMethod(info.FullMethod),
+			),
+			trace.WithSpanKind(trace.SpanKindServer))
+		defer span.End()
+
+		resp, err = handler(ctx, req)
+
+		setGRPCSpanStatus(span, err)
+		return
+	}
+}
+
+// NewStreamServerInterceptor creates new gRPC stream interceptor to save gRPC server traces.
+func NewStreamServerInterceptor() grpc.StreamServerInterceptor {
+	return func(srv any, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
+		ctx := extractGRPCTraceInfo(ss.Context())
+		var span trace.Span
+		ctx, span = tracing.StartSpanFromContext(ctx, info.FullMethod,
+			trace.WithAttributes(
+				semconv.RPCSystemGRPC,
+				semconv.RPCMethod(info.FullMethod),
+			),
+			trace.WithSpanKind(trace.SpanKindServer))
+		defer span.End()
+
+		err := handler(srv, newgRPCServerStream(ctx, ss))
+
+		setGRPCSpanStatus(span, err)
+		return err
+	}
+}
+
+func startClientSpan(ctx context.Context, cc *grpc.ClientConn, method string) (context.Context, trace.Span) {
+	ctx, span := tracing.StartSpanFromContext(ctx, method, trace.WithAttributes(
+		semconv.RPCSystemGRPC,
+		semconv.RPCMethod(method),
+		attribute.String("rpc.grpc.target", cc.Target())),
+		trace.WithSpanKind(trace.SpanKindClient),
+	)
+	ctx = setGRPCTraceInfo(ctx)
+	return ctx, span
+}
+
+func setGRPCSpanStatus(span trace.Span, err error) {
+	if err != nil {
+		grpcStatus, _ := status.FromError(err)
+		span.SetStatus(codes.Error, grpcStatus.Message())
+		span.SetAttributes(semconv.RPCGRPCStatusCodeKey.Int64(int64(grpcStatus.Code())))
+	} else {
+		span.SetStatus(codes.Ok, "")
+		span.SetAttributes(semconv.RPCGRPCStatusCodeKey.Int64(int64(grpc_codes.OK)))
+	}
+}
+
+func extractGRPCTraceInfo(ctx context.Context) context.Context {
+	md, ok := metadata.FromIncomingContext(ctx)
+	if !ok {
+		return ctx
+	}
+	carrier := &grpcMetadataCarrier{
+		md: &md,
+	}
+	return tracing.Propagator.Extract(ctx, carrier)
+}
+
+func setGRPCTraceInfo(ctx context.Context) context.Context {
+	md, ok := metadata.FromOutgoingContext(ctx)
+	if !ok {
+		md = metadata.MD{}
+	}
+	carrier := &grpcMetadataCarrier{
+		md: &md,
+	}
+	tracing.Propagator.Inject(ctx, carrier)
+	return metadata.NewOutgoingContext(ctx, md)
+}
--- a/tracing/grpc/server.go
+++ b/tracing/grpc/server.go
@ -0,0 +1,44 @@
+package grpc
+
+import (
+	"context"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/metadata"
+)
+
+type serverStream struct {
+	originalStream grpc.ServerStream
+	ctx            context.Context // nolint:containedctx
+}
+
+func newgRPCServerStream(ctx context.Context, originalStream grpc.ServerStream) grpc.ServerStream {
+	return &serverStream{
+		originalStream: originalStream,
+		ctx:            ctx,
+	}
+}
+
+func (ss *serverStream) SetHeader(md metadata.MD) error {
+	return ss.originalStream.SendHeader(md)
+}
+
+func (ss *serverStream) SendHeader(md metadata.MD) error {
+	return ss.originalStream.SendHeader(md)
+}
+
+func (ss *serverStream) SetTrailer(md metadata.MD) {
+	ss.originalStream.SetTrailer(md)
+}
+
+func (ss *serverStream) Context() context.Context {
+	return ss.ctx
+}
+
+func (ss *serverStream) SendMsg(m any) error {
+	return ss.originalStream.SendMsg(m)
+}
+
+func (ss *serverStream) RecvMsg(m any) error {
+	return ss.originalStream.RecvMsg(m)
+}
--- a/tracing/propagator.go
+++ b/tracing/propagator.go
@ -0,0 +1,94 @@
+package tracing
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/trace"
+)
+
+const (
+	traceIDHeader = "x-frostfs-trace-id"
+	spanIDHeader  = "x-frostfs-span-id"
+	flagsHeader   = "x-frostfs-trace-flags"
+)
+
+const (
+	flagsSampled = 1 << iota
+)
+
+// propagator serializes SpanContext to/from headers.
+// x-frostfs-trace-id - TraceID, 16 bytes, hex-string (32 bytes).
+// x-frostfs-span-id - SpanID, 8 bytes, hexstring (16 bytes).
+// x-frostfs-trace-flags - trace flags (now sampled only).
+type propagator struct{}
+
+// Propagator is propagation.TextMapPropagator instance, used to extract/inject trace info from/to remote context.
+var Propagator propagation.TextMapPropagator = &propagator{}
+
+// Inject injects tracing info to carrier.
+func (p *propagator) Inject(ctx context.Context, carrier propagation.TextMapCarrier) {
+	sc := trace.SpanFromContext(ctx).SpanContext()
+	if !sc.TraceID().IsValid() || !sc.SpanID().IsValid() {
+		return
+	}
+
+	var flags int
+	if sc.IsSampled() {
+		flags |= flagsSampled
+	}
+
+	carrier.Set(traceIDHeader, sc.TraceID().String())
+	carrier.Set(spanIDHeader, sc.SpanID().String())
+	carrier.Set(flagsHeader, fmt.Sprintf("%x", flags))
+}
+
+// Extract extracts tracing info from carrier and returns context with tracing info.
+// In case of error returns ctx.
+func (p *propagator) Extract(ctx context.Context, carrier propagation.TextMapCarrier) context.Context {
+	spanConfig := trace.SpanContextConfig{}
+	var err error
+
+	traceIDStr := carrier.Get(traceIDHeader)
+	traceIDDefined := traceIDStr != ""
+	if traceIDDefined {
+		spanConfig.TraceID, err = trace.TraceIDFromHex(traceIDStr)
+		if err != nil {
+			return ctx
+		}
+	}
+
+	spanIDstr := carrier.Get(spanIDHeader)
+	spanIDDefined := spanIDstr != ""
+	if spanIDDefined {
+		spanConfig.SpanID, err = trace.SpanIDFromHex(spanIDstr)
+		if err != nil {
+			return ctx
+		}
+	}
+
+	if traceIDDefined != spanIDDefined {
+		return ctx // traceID + spanID must be defined OR no traceID and no spanID
+	}
+
+	flagsStr := carrier.Get(flagsHeader)
+	if flagsStr != "" {
+		var v int64
+		v, err = strconv.ParseInt(flagsStr, 16, 32)
+		if err != nil {
+			return ctx
+		}
+		if v&flagsSampled == flagsSampled {
+			spanConfig.TraceFlags = trace.FlagsSampled
+		}
+	}
+
+	return trace.ContextWithRemoteSpanContext(ctx, trace.NewSpanContext(spanConfig))
+}
+
+// Fields returns the keys whose values are set with Inject.
+func (p *propagator) Fields() []string {
+	return []string{traceIDHeader, spanIDHeader, flagsHeader}
+}
--- a/tracing/propagator_test.go
+++ b/tracing/propagator_test.go
@ -0,0 +1,256 @@
+package tracing
+
+import (
+	"context"
+	"crypto/rand"
+	"encoding/hex"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"go.opentelemetry.io/otel/trace"
+)
+
+type testCarrier struct {
+	Values map[string]string
+}
+
+func (c *testCarrier) Get(key string) string {
+	return c.Values[key]
+}
+
+func (c *testCarrier) Set(key string, value string) {
+	c.Values[key] = value
+}
+
+func (c *testCarrier) Keys() []string {
+	res := make([]string, 0, len(c.Values))
+	for k := range c.Values {
+		res = append(res, k)
+	}
+	return res
+}
+
+var p = &propagator{}
+
+func TestPropagator_Inject(t *testing.T) {
+	t.Run("injects trace_id and span_id if valid", func(t *testing.T) {
+		traceIDBytes := make([]byte, 16)
+		rand.Read(traceIDBytes)
+		traceIDHex := hex.EncodeToString(traceIDBytes)
+
+		spanIDBytes := make([]byte, 8)
+		rand.Read(spanIDBytes)
+		spanIDHex := hex.EncodeToString(spanIDBytes)
+
+		spanConfig := trace.SpanContextConfig{}
+		spanConfig.TraceID, _ = trace.TraceIDFromHex(traceIDHex)
+		spanConfig.SpanID, _ = trace.SpanIDFromHex(spanIDHex)
+		spanConfig.TraceFlags = trace.FlagsSampled
+
+		ctx := trace.ContextWithRemoteSpanContext(context.Background(), trace.NewSpanContext(spanConfig))
+		c := &testCarrier{
+			Values: make(map[string]string),
+		}
+		p.Inject(ctx, c)
+
+		require.Equal(t, 3, len(c.Values), "not all headers were saved")
+		require.Equal(t, traceIDHex, c.Values[traceIDHeader], "unexpected trace id")
+		require.Equal(t, spanIDHex, c.Values[spanIDHeader], "unexpected span id")
+		require.Equal(t, "1", c.Values[flagsHeader], "unexpected flags")
+	})
+	t.Run("doesn't injects if trace_id is invalid", func(t *testing.T) {
+		traceIDBytes := make([]byte, 16)
+		traceIDHex := hex.EncodeToString(traceIDBytes)
+
+		spanIDBytes := make([]byte, 8)
+		rand.Read(spanIDBytes)
+		spanIDHex := hex.EncodeToString(spanIDBytes)
+
+		spanConfig := trace.SpanContextConfig{}
+		spanConfig.TraceID, _ = trace.TraceIDFromHex(traceIDHex)
+		spanConfig.SpanID, _ = trace.SpanIDFromHex(spanIDHex)
+		spanConfig.TraceFlags = trace.FlagsSampled
+
+		ctx := trace.ContextWithRemoteSpanContext(context.Background(), trace.NewSpanContext(spanConfig))
+		c := &testCarrier{
+			Values: make(map[string]string),
+		}
+		p.Inject(ctx, c)
+
+		require.Equal(t, 0, len(c.Values), "some headers were saved")
+	})
+	t.Run("doesn't injects if span_id is invalid", func(t *testing.T) {
+		traceIDBytes := make([]byte, 16)
+		rand.Read(traceIDBytes)
+		traceIDHex := hex.EncodeToString(traceIDBytes)
+
+		spanIDBytes := make([]byte, 8)
+		spanIDHex := hex.EncodeToString(spanIDBytes)
+
+		spanConfig := trace.SpanContextConfig{}
+		spanConfig.TraceID, _ = trace.TraceIDFromHex(traceIDHex)
+		spanConfig.SpanID, _ = trace.SpanIDFromHex(spanIDHex)
+		spanConfig.TraceFlags = trace.FlagsSampled
+
+		ctx := trace.ContextWithRemoteSpanContext(context.Background(), trace.NewSpanContext(spanConfig))
+		c := &testCarrier{
+			Values: make(map[string]string),
+		}
+		p.Inject(ctx, c)
+
+		require.Equal(t, 0, len(c.Values), "some headers were saved")
+	})
+	t.Run("injects flags if no flags specified", func(t *testing.T) {
+		traceIDBytes := make([]byte, 16)
+		rand.Read(traceIDBytes)
+		traceIDHex := hex.EncodeToString(traceIDBytes)
+
+		spanIDBytes := make([]byte, 8)
+		rand.Read(spanIDBytes)
+		spanIDHex := hex.EncodeToString(spanIDBytes)
+
+		spanConfig := trace.SpanContextConfig{}
+		spanConfig.TraceID, _ = trace.TraceIDFromHex(traceIDHex)
+		spanConfig.SpanID, _ = trace.SpanIDFromHex(spanIDHex)
+
+		ctx := trace.ContextWithRemoteSpanContext(context.Background(), trace.NewSpanContext(spanConfig))
+		c := &testCarrier{
+			Values: make(map[string]string),
+		}
+		p.Inject(ctx, c)
+
+		require.Equal(t, 3, len(c.Values), "not all headers were saved")
+		require.Equal(t, traceIDHex, c.Values[traceIDHeader], "unexpected trace id")
+		require.Equal(t, spanIDHex, c.Values[spanIDHeader], "unexpected span id")
+		require.Equal(t, "0", c.Values[flagsHeader], "unexpected flags")
+	})
+}
+
+func TestPropagator_Extract(t *testing.T) {
+	t.Run("extracts if set", func(t *testing.T) {
+		c := &testCarrier{
+			Values: make(map[string]string),
+		}
+
+		traceIDBytes := make([]byte, 16)
+		rand.Read(traceIDBytes)
+		traceIDHex := hex.EncodeToString(traceIDBytes)
+		c.Values[traceIDHeader] = traceIDHex
+
+		spanIDBytes := make([]byte, 8)
+		rand.Read(spanIDBytes)
+		spanIDHex := hex.EncodeToString(spanIDBytes)
+		c.Values[spanIDHeader] = spanIDHex
+
+		c.Values[flagsHeader] = "1"
+
+		ctx := p.Extract(context.Background(), c)
+
+		sc := trace.SpanFromContext(ctx).SpanContext()
+		require.True(t, sc.HasTraceID(), "trace_id was not set")
+		require.Equal(t, traceIDHex, sc.TraceID().String(), "trace_id doesn't match")
+		require.True(t, sc.HasSpanID(), "span_id was not set")
+		require.Equal(t, spanIDHex, sc.SpanID().String(), "span_id doesn't match")
+		require.True(t, sc.IsSampled(), "sampled was not set")
+	})
+	t.Run("not extracts if only trace_id defined", func(t *testing.T) {
+		c := &testCarrier{
+			Values: make(map[string]string),
+		}
+
+		traceIDBytes := make([]byte, 16)
+		rand.Read(traceIDBytes)
+		traceIDHex := hex.EncodeToString(traceIDBytes)
+		c.Values[traceIDHeader] = traceIDHex
+		c.Values[flagsHeader] = "1"
+
+		ctx := p.Extract(context.Background(), c)
+
+		sc := trace.SpanFromContext(ctx).SpanContext()
+		require.False(t, sc.HasTraceID(), "trace_id was set")
+		require.False(t, sc.HasSpanID(), "span_id was set")
+		require.False(t, sc.IsSampled(), "sampled was set")
+	})
+	t.Run("not extracts if only span_id defined", func(t *testing.T) {
+		c := &testCarrier{
+			Values: make(map[string]string),
+		}
+
+		spanIDBytes := make([]byte, 8)
+		rand.Read(spanIDBytes)
+		spanIDHex := hex.EncodeToString(spanIDBytes)
+		c.Values[spanIDHeader] = spanIDHex
+		c.Values[flagsHeader] = "1"
+
+		ctx := p.Extract(context.Background(), c)
+
+		sc := trace.SpanFromContext(ctx).SpanContext()
+		require.False(t, sc.HasTraceID(), "trace_id was set")
+		require.False(t, sc.HasSpanID(), "span_id was set")
+		require.False(t, sc.IsSampled(), "sampled was set")
+	})
+	t.Run("not extracts if trace_id is in invalid", func(t *testing.T) {
+		c := &testCarrier{
+			Values: make(map[string]string),
+		}
+
+		c.Values[traceIDHeader] = "loren ipsum"
+
+		spanIDBytes := make([]byte, 8)
+		rand.Read(spanIDBytes)
+		spanIDHex := hex.EncodeToString(spanIDBytes)
+		c.Values[spanIDHeader] = spanIDHex
+		c.Values[flagsHeader] = "1"
+
+		ctx := p.Extract(context.Background(), c)
+
+		sc := trace.SpanFromContext(ctx).SpanContext()
+		require.False(t, sc.HasTraceID(), "trace_id was set")
+		require.False(t, sc.HasSpanID(), "span_id was set")
+		require.False(t, sc.IsSampled(), "sampled was set")
+	})
+	t.Run("not extracts if span_id is invalid", func(t *testing.T) {
+		c := &testCarrier{
+			Values: make(map[string]string),
+		}
+
+		c.Values[spanIDHeader] = "loren ipsum"
+
+		traceIDBytes := make([]byte, 16)
+		rand.Read(traceIDBytes)
+		traceIDHex := hex.EncodeToString(traceIDBytes)
+		c.Values[traceIDHeader] = traceIDHex
+		c.Values[flagsHeader] = "1"
+
+		ctx := p.Extract(context.Background(), c)
+
+		sc := trace.SpanFromContext(ctx).SpanContext()
+		require.False(t, sc.HasTraceID(), "trace_id was set")
+		require.False(t, sc.HasSpanID(), "span_id was set")
+		require.False(t, sc.IsSampled(), "sampled was set")
+	})
+	t.Run("not extracts if flags is invalid", func(t *testing.T) {
+		c := &testCarrier{
+			Values: make(map[string]string),
+		}
+
+		traceIDBytes := make([]byte, 16)
+		rand.Read(traceIDBytes)
+		traceIDHex := hex.EncodeToString(traceIDBytes)
+		c.Values[traceIDHeader] = traceIDHex
+
+		spanIDBytes := make([]byte, 8)
+		rand.Read(spanIDBytes)
+		spanIDHex := hex.EncodeToString(spanIDBytes)
+		c.Values[spanIDHeader] = spanIDHex
+
+		c.Values[flagsHeader] = "loren ipsum"
+
+		ctx := p.Extract(context.Background(), c)
+
+		sc := trace.SpanFromContext(ctx).SpanContext()
+		require.False(t, sc.HasTraceID(), "trace_id was set")
+		require.False(t, sc.HasSpanID(), "span_id was set")
+		require.False(t, sc.IsSampled(), "sampled was set")
+	})
+}
--- a/tracing/setup.go
+++ b/tracing/setup.go
@ -0,0 +1,176 @@
+package tracing
+
+import (
+	"context"
+	"crypto/x509"
+	"errors"
+	"fmt"
+	"sync"
+	"sync/atomic"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
+	"go.opentelemetry.io/otel/exporters/stdout/stdouttrace"
+	"go.opentelemetry.io/otel/sdk/resource"
+	sdktrace "go.opentelemetry.io/otel/sdk/trace"
+	"go.opentelemetry.io/otel/sdk/trace/tracetest"
+	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.
+	tracingLock = &sync.Mutex{}
+
+	provider *sdktrace.TracerProvider
+	done     bool
+
+	config = Config{}
+	tracer = getDefaultTracer()
+)
+
+// Setup initializes global tracer.
+// Returns true if global tracer was updated.
+// Shutdown method must be called for graceful shutdown.
+func Setup(ctx context.Context, cfg Config) (bool, error) {
+	if err := cfg.validate(); err != nil {
+		return false, err
+	}
+
+	tracingLock.Lock()
+	defer tracingLock.Unlock()
+
+	if done {
+		return false, fmt.Errorf("failed to setup tracing: already shutdown")
+	}
+
+	if !config.hasChange(&cfg) {
+		return false, nil
+	}
+
+	if !cfg.Enabled {
+		config = cfg
+		tracer.Store(&tracerHolder{Tracer: noop.NewTracerProvider().Tracer("")})
+		return true, flushAndShutdown(ctx)
+	}
+
+	exp, err := getExporter(ctx, &cfg)
+	if err != nil {
+		return false, err
+	}
+
+	prevProvider := provider
+
+	provider = sdktrace.NewTracerProvider(
+		sdktrace.WithBatcher(exp),
+		sdktrace.WithResource(newResource(&cfg)),
+	)
+
+	config = cfg
+	tracer.Store(&tracerHolder{Tracer: provider.Tracer(cfg.Service)})
+
+	var retErr error
+	if prevProvider != nil {
+		retErr = prevProvider.ForceFlush(ctx)
+		if err := prevProvider.Shutdown(ctx); err != nil {
+			if retErr == nil {
+				retErr = err
+			} else {
+				retErr = fmt.Errorf("%v ; %v", retErr, err)
+			}
+		}
+	}
+
+	return true, retErr
+}
+
+// Shutdown shutdowns tracing.
+func Shutdown(ctx context.Context) error {
+	tracingLock.Lock()
+	defer tracingLock.Unlock()
+
+	if done {
+		return nil
+	}
+
+	done = true
+
+	config = Config{}
+	tracer.Store(&tracerHolder{Tracer: noop.NewTracerProvider().Tracer("")})
+
+	return flushAndShutdown(ctx)
+}
+
+func getDefaultTracer() *atomic.Pointer[tracerHolder] {
+	v := new(atomic.Pointer[tracerHolder])
+	v.Store(&tracerHolder{Tracer: noop.NewTracerProvider().Tracer("")})
+	return v
+}
+
+func flushAndShutdown(ctx context.Context) error {
+	if provider == nil {
+		return nil
+	}
+
+	tmp := provider
+	provider = nil
+	var retErr error
+	retErr = tmp.ForceFlush(ctx)
+	if err := tmp.Shutdown(ctx); err != nil {
+		if retErr == nil {
+			retErr = err
+		} else {
+			retErr = fmt.Errorf("%v ; %v", retErr, err)
+		}
+	}
+	return retErr
+}
+
+func getExporter(ctx context.Context, cfg *Config) (sdktrace.SpanExporter, error) {
+	switch cfg.Exporter {
+	default:
+		return nil, fmt.Errorf("failed to setup tracing: unknown tracing exporter (%s)", cfg.Exporter)
+	case StdoutExporter:
+		return stdouttrace.New()
+	case NoOpExporter:
+		return tracetest.NewNoopExporter(), nil
+	case OTLPgRPCExporter:
+		securityOption := 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)
+	}
+}
+
+func newResource(cfg *Config) *resource.Resource {
+	attrs := []attribute.KeyValue{
+		semconv.ServiceName(cfg.Service),
+	}
+	if len(cfg.Version) > 0 {
+		attrs = append(attrs, semconv.ServiceVersion(cfg.Version))
+	}
+	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...,
+	)
+}
+
+type tracerHolder struct {
+	Tracer trace.Tracer
+}
--- a/tracing/setup_test.go
+++ b/tracing/setup_test.go
@ -0,0 +1,118 @@
+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
+}
--- a/tracing/span.go
+++ b/tracing/span.go
@ -0,0 +1,12 @@
+package tracing
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/trace"
+)
+
+// StartSpanFromContext creates a span and a context.Context containing the newly-created span.
+func StartSpanFromContext(ctx context.Context, operationName string, opts ...trace.SpanStartOption) (context.Context, trace.Span) {
+	return tracer.Load().Tracer.Start(ctx, operationName, opts...)
+}
Author	SHA1	Message	Date
Dmitrii Stepanov	f17779933e	[#17 ] config: Add resource attributes Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>	2024-11-12 11:23:07 +03:00
Vitaliy Potyarkin	486af9e0d8	[#11 ] Add license and README (close #11) Signed-off-by: Vitaliy Potyarkin <v.potyarkin@yadro.com>	2024-11-08 15:06:58 +03:00
Aleksey Savaitan	666d326cc5	[#13 ] support tls over grpc for otlp_grpc exporter type Signed-off-by: Aleksey Savaitan <a.savaitan@yadro.com>	2024-09-09 14:43:14 +03:00
Evgenii Stratonikov	6dd265d949	[#12 ] tracing: Optimize noop exporter Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-07-05 10:37:41 +03:00
Evgenii Stratonikov	cb37f5975e	[#12 ] go.mod: Update otel dependencies Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-07-05 10:37:40 +03:00
Evgenii Stratonikov	4516209806	[#12 ] go.mod: Bump go version to 1.21 Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-07-05 10:35:11 +03:00
Evgenii Stratonikov	07d955b1d0	[#12 ] pre-commit: Use cached tests in hook Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-07-05 10:27:32 +03:00
Evgenii Stratonikov	3b672cf19e	[#12 ] Makefile: Allow to override testflags Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-07-05 10:27:32 +03:00
Evgenii Stratonikov	7a48a24c2a	[#12 ] pre-commit: Remove gitlint Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-07-05 10:27:32 +03:00
Evgenii Stratonikov	c094f8ec89	[#12 ] .golangci.yml: Reenable deprecated warnings Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-07-05 10:27:32 +03:00
Evgenii Stratonikov	f73432edd6	[#12 ] Makefile: Update golanci-lint to v1.59.1 Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-07-05 10:27:32 +03:00
Evgenii Stratonikov	44b526aaf8	[#12 ] go.mod: Tidy modules Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-07-05 10:27:32 +03:00
Evgenii Stratonikov	26ef0b79cf	[#7 ] Makefile: Update linter versions Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-01-31 15:06:10 +03:00
Evgenii Stratonikov	afb5f2b857	[#7 ] .forgejo: Add pre-commit Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-01-31 15:05:29 +03:00
Evgenii Stratonikov	99465e6639	[#7 ] loki: Fix linter issues Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>	2024-01-31 14:54:34 +03:00
Alexander Chuprov	b3ad3335ff	[#5 ] logs: Add Loki Signed-off-by: Alexander Chuprov <a.chuprov@yadro.com>	2023-11-01 14:17:34 +03:00
Anton Nikiforov	7960099809	[#4 ] Export gRPC client and server metrics Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>	2023-10-19 10:51:18 +03:00
Dmitrii Stepanov	c97d21411e	[#3 ] metrics: Add gRPC middleware Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>	2023-05-31 11:27:42 +03:00
Dmitrii Stepanov	3c1b76ee51	[#3 ] metrics: Move from node Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>	2023-05-31 11:27:42 +03:00
Dmitrii Stepanov	7f9eba1b19	[#3 ] tracing: Move from api-go Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>	2023-05-31 11:27:42 +03:00