linter fixes

cmd/transport-core-tool/main.go

@@ -32,8 +32,7 @@ func main() {
 	if _, err := parser.Parse(); err != nil {
 		if flagsErr, ok := err.(*flags.Error); ok && flagsErr.Type == flags.ErrHelp { // nolint:errorlint
 			os.Exit(0)
-		} else {
+		}
 		os.Exit(1)
 	}
-	}
 }

core/config/config.go

@@ -1,7 +1,7 @@
 package config
 
 import (
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"time"
 
@@ -132,7 +132,7 @@ func (c *Config) GetConfigData(path string) []byte {
 		panic(err)
 	}
 
-	source, err := ioutil.ReadFile(path)
+	source, err := os.ReadFile(path)
 	if err != nil {
 		panic(err)
 	}

core/config/config_test.go

@@ -1,7 +1,6 @@
 package config
 
 import (
-	"io/ioutil"
 	"os"
 	"path"
 	"testing"
@@ -54,7 +53,7 @@ config_aws:
     bucket: bucket
     folder_name: folder
     content_type: image/jpeg`)
-	err := ioutil.WriteFile(testConfigFile, c.data, os.ModePerm)
+	err := os.WriteFile(testConfigFile, c.data, os.ModePerm)
 	require.Nil(c.T(), err)
 
 	c.config = NewConfig(testConfigFile)

core/db/migration_generator.go

@@ -51,7 +51,7 @@ func (x *NewMigrationCommand) FileExists(filename string) bool {
 }
 
 // Execute migration generator command.
-func (x *NewMigrationCommand) Execute(args []string) error {
+func (x *NewMigrationCommand) Execute(_ []string) error {
 	tpl, err := template.New("migration").Parse(migrationTemplate)
 	if err != nil {
 		return fmt.Errorf("fatal: cannot parse base migration template: %w", err)

core/db/migration_generator_test.go

@@ -2,7 +2,6 @@ package db
 
 import (
 	"fmt"
-	"io/ioutil"
 	"log"
 	"math/rand"
 	"os"
@@ -36,7 +35,7 @@ func (s *MigrationGeneratorSuite) Test_FileExists() {
 func (s *MigrationGeneratorSuite) Test_Execute() {
 	found := false
 	assert.NoError(s.T(), s.command.Execute([]string{}))
-	files, err := ioutil.ReadDir(s.command.Directory)
+	files, err := os.ReadDir(s.command.Directory)
 	if err != nil {
 		log.Fatal(err)
 	}

core/db/models/user.go

@@ -14,8 +14,11 @@ type User struct {
 
 // TableName will return table name for User
 // It will not work if User is not embedded, but mapped as another type
+//
 //	type MyUser User // will not work
+//
 // but
+//
 //	type MyUser struct { // will work
 //	    User
 //	}

core/doc.go

@@ -2,6 +2,7 @@
 Package core provides different functions like error-reporting, logging, localization, etc.
 to make it easier to create transports.
 Usage:
+
 	package main
 
 	import (
@@ -36,14 +37,19 @@ Usage:
 	    }
 	}
 
-Resource embedding
+# Resource embedding
 
 packr can be used to provide resource embedding, see:
+
 	https://github.com/gobuffalo/packr/tree/master/v2
+
 In order to use packr you must follow instruction, and provide boxes with templates, translations and assets to library.
 You can find instruction here:
+
 	https://github.com/gobuffalo/packr/tree/master/v2#library-installation
+
 Example of usage:
+
 	package main
 
 	import (
@@ -104,10 +110,12 @@ Example of usage:
 	    }
 	}
 
-Migration generator
+# Migration generator
 
 This library contains helper tool for transports. You can install it via go:
+
 	$ go get -u github.com/retailcrm/mg-transport-core/cmd/transport-core-tool
+
 Currently, it only can generate new migrations for your transport.
 
 Copyright (c) 2019 RetailDriver LLC. Usage of this source code is governed by a MIT license.

core/domains.go

@@ -2,7 +2,7 @@ package core
 
 import (
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"net/http"
 )
 
@@ -40,7 +40,7 @@ func getDomainsByStore(store string) []Domain {
 		return nil
 	}
 
-	respBody, readErr := ioutil.ReadAll(resp.Body)
+	respBody, readErr := io.ReadAll(resp.Body)
 
 	if readErr != nil {
 		return nil

core/engine.go

@@ -7,6 +7,7 @@ import (
 	"io/fs"
 	"net/http"
 	"sync"
+	"time"
 
 	"github.com/blacked/go-zabbix"
 	"github.com/getsentry/sentry-go"
@@ -26,12 +27,14 @@ import (
 	"github.com/retailcrm/mg-transport-core/v2/core/logger"
 )
 
+const DefaultHTTPClientTimeout time.Duration = 30
+
 var boolTrue = true
 
 // DefaultHTTPClientConfig is a default config for HTTP client. It will be used by Engine for building HTTP client
 // if HTTP client config is not present in the configuration.
 var DefaultHTTPClientConfig = &config.HTTPClientConfig{
-	Timeout:         30,
+	Timeout:         DefaultHTTPClientTimeout,
 	SSLVerification: &boolTrue,
 }
 
@@ -279,10 +282,9 @@ func (e *Engine) BuildHTTPClient(certs *x509.CertPool, replaceDefault ...bool) *
 
 	if err != nil {
 		panic(err)
-	} else {
-		e.httpClient = client
 	}
 
+	e.httpClient = client
 	return e
 }
 

core/engine_test.go

@@ -6,7 +6,7 @@ import (
 	"database/sql"
 	"fmt"
 	"html/template"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"os"
@@ -365,7 +365,7 @@ func (e *EngineTest) Test_GetCSRFToken() {
 		URL: &url.URL{
 			RawQuery: "",
 		},
-		Body:   ioutil.NopCloser(bytes.NewReader([]byte{})),
+		Body:   io.NopCloser(bytes.NewReader([]byte{})),
 		Header: http.Header{"X-CSRF-Token": []string{"token"}},
 	}}
 	c.Set("csrf_token", "token")

core/healthcheck/counter.go

@@ -10,7 +10,7 @@ import (
 const DefaultResetPeriod = time.Minute * 15
 
 // AtomicCounter is a default Counter implementation.
-// It uses atomics under the hood (hence the name) and can be configured with custom reset timeout and
+// It uses atomics under the hood (hence the name) and can be configured with custom reset timeout and.
 type AtomicCounter struct {
 	name              atomic.String
 	msg               atomic.String

core/healthcheck/iface.go

@@ -1,7 +1,7 @@
 package healthcheck
 
 var (
-	// compile-time checks to ensure that implementations are compatible with the interface
+	// compile-time checks to ensure that implementations are compatible with the interface.
 	_ = Storage(&SyncMapStorage{})
 	_ = Counter(&AtomicCounter{})
 	_ = Processor(CounterProcessor{})

core/job_manager_test.go

@@ -44,7 +44,7 @@ type callbackLogger struct {
 	fn     callbackLoggerFunc
 }
 
-func (n *callbackLogger) Check(lvl zapcore.Level, msg string) *zapcore.CheckedEntry {
+func (n *callbackLogger) Check(_ zapcore.Level, _ string) *zapcore.CheckedEntry {
 	return &zapcore.CheckedEntry{}
 }
 
@@ -75,7 +75,7 @@ func (n *callbackLogger) cloneWithFields(fields []zap.Field) *callbackLogger {
 		cl.fields = fields
 		return cl
 	}
-	cl.fields = append(existing, fields...)
+	cl.fields = append(existing, fields...) // nolint:gocritic
 	return cl
 }
 
@@ -91,19 +91,19 @@ func (n *callbackLogger) WithLazy(args ...zap.Field) logger.Logger {
 	return n.cloneWithFields(args)
 }
 
-func (n *callbackLogger) WithGroup(name string) logger.Logger {
+func (n *callbackLogger) WithGroup(_ string) logger.Logger {
 	return n
 }
 
-func (n *callbackLogger) ForHandler(handler any) logger.Logger {
+func (n *callbackLogger) ForHandler(_ any) logger.Logger {
 	return n
 }
 
-func (n *callbackLogger) ForConnection(conn any) logger.Logger {
+func (n *callbackLogger) ForConnection(_ any) logger.Logger {
 	return n
 }
 
-func (n *callbackLogger) ForAccount(acc any) logger.Logger {
+func (n *callbackLogger) ForAccount(_ any) logger.Logger {
 	return n
 }
 
@@ -288,11 +288,11 @@ func (t *JobTest) oncePanicJob() {
 }
 
 func (t *JobTest) regularJob() {
-	rand.Seed(time.Now().UnixNano())
+	r := rand.New(rand.NewSource(time.Now().UnixNano())) // nolint:gosec
 	t.job = &Job{
 		Command: func(log logger.Logger) error {
 			t.executedChan <- true
-			t.randomNumber <- rand.Int() // nolint:gosec
+			t.randomNumber <- r.Int() // nolint:gosec
 			return nil
 		},
 		ErrorHandler: t.testErrorHandler(),
@@ -303,7 +303,6 @@ func (t *JobTest) regularJob() {
 }
 
 func (t *JobTest) regularSyncJob() {
-	rand.Seed(time.Now().UnixNano())
 	t.job = &Job{
 		Command: func(log logger.Logger) error {
 			t.syncBool = true

core/localizer.go

@@ -3,7 +3,7 @@ package core
 import (
 	"html/template"
 	"io/fs"
-	"io/ioutil"
+	"os"
 	"path"
 	"sync"
 
@@ -90,6 +90,7 @@ type CloneableLocalizer interface {
 
 // NewLocalizer returns localizer instance with specified parameters.
 // Usage:
+//
 //	NewLocalizer(language.English, DefaultLocalizerMatcher(), "translations")
 func NewLocalizer(locale language.Tag, matcher language.Matcher, translationsPath string) LocalizerInterface {
 	localizer := &Localizer{
@@ -106,7 +107,9 @@ func NewLocalizer(locale language.Tag, matcher language.Matcher, translationsPat
 
 // NewLocalizerFS returns localizer instance with specified parameters.
 // Usage:
+//
 //	NewLocalizerFS(language.English, DefaultLocalizerMatcher(), translationsFS)
+//
 // TODO This code should be covered with tests.
 func NewLocalizerFS(
 	locale language.Tag, matcher language.Matcher, translationsFS fs.FS,
@@ -161,6 +164,7 @@ func (l *Localizer) Clone() CloneableLocalizer {
 // Because of that all Localizer instances from this middleware will share *same* mutex. This mutex is used to wrap
 // i18n.Bundle methods (those aren't goroutine-safe to use).
 // Usage:
+//
 //	engine := gin.New()
 //	localizer := NewLocalizer("en", DefaultLocalizerMatcher(), "translations")
 //	engine.Use(localizer.LocalizationMiddleware())
@@ -174,15 +178,21 @@ func (l *Localizer) LocalizationMiddleware() gin.HandlerFunc {
 
 // LocalizationFuncMap returns template.FuncMap (html template is used) with one method - trans
 // Usage in code:
+//
 //	engine := gin.New()
 //	engine.FuncMap = localizer.LocalizationFuncMap()
+//
 // or (with multitemplate)
+//
 //	renderer := multitemplate.NewRenderer()
 //	funcMap := localizer.LocalizationFuncMap()
 //	renderer.AddFromFilesFuncs("index", funcMap, "template/index.html")
+//
 // funcMap must be passed for every .AddFromFilesFuncs call
 // Usage in templates:
+//
 //	<p class="info">{{"need_login_msg" | trans}}
+//
 // You can borrow FuncMap from this method and add your functions to it.
 func (l *Localizer) LocalizationFuncMap() template.FuncMap {
 	return template.FuncMap{
@@ -196,7 +206,7 @@ func (l *Localizer) LocalizationFuncMap() template.FuncMap {
 				parts = append(parts, "")
 			}
 
-			partsMap := make(map[string]interface{}, len(parts)/2)
+			partsMap := make(map[string]interface{}, len(parts)/2) // nolint:gomnd
 
 			for i := 0; i < len(parts)-1; i += 2 {
 				partsMap[parts[i]] = parts[i+1]
@@ -239,7 +249,7 @@ func (l *Localizer) loadTranslationsToBundle(i18nBundle *i18n.Bundle) {
 
 // LoadTranslations will load all translation files from translations directory.
 func (l *Localizer) loadFromDirectory(i18nBundle *i18n.Bundle) error {
-	files, err := ioutil.ReadDir(l.TranslationsPath)
+	files, err := os.ReadDir(l.TranslationsPath)
 	if err != nil {
 		return err
 	}

core/localizer_test.go

@@ -1,7 +1,6 @@
 package core
 
 import (
-	"io/ioutil"
 	"math/rand"
 	"net/http"
 	"net/http/httptest"
@@ -40,7 +39,7 @@ func createTestLangFiles(t *testing.T) {
 		}
 
 		if _, err := os.Stat(fileName); err != nil && os.IsNotExist(err) {
-			err = ioutil.WriteFile(fileName, data, os.ModePerm)
+			err = os.WriteFile(fileName, data, os.ModePerm)
 			require.Nil(t, err)
 		}
 	}
@@ -103,7 +102,7 @@ func (l *LocalizerTest) Test_LocalizationMiddleware_Context() {
 
 func (l *LocalizerTest) Test_LocalizationMiddleware_Httptest() {
 	var wg sync.WaitGroup
-	rand.Seed(time.Now().UnixNano())
+	r := rand.New(rand.NewSource(time.Now().UnixNano())) // nolint:gosec
 	l.localizer.Preload(DefaultLanguages)
 	langMsgMap := map[language.Tag]string{
 		language.English: "Test message",
@@ -122,7 +121,7 @@ func (l *LocalizerTest) Test_LocalizationMiddleware_Httptest() {
 		wg.Add(1)
 		go func(m map[language.Tag]string, wg *sync.WaitGroup) {
 			var tag language.Tag
-			switch rand.Intn(3-1) + 1 { // nolint:gosec
+			switch r.Intn(3-1) + 1 { // nolint:gosec
 			case 1:
 				tag = language.English
 			case 2:

core/logger/api_client_adapter.go

@@ -2,6 +2,7 @@ package logger
 
 import (
 	"fmt"
+
 	"go.uber.org/zap"
 
 	retailcrm "github.com/retailcrm/api-client-go/v2"

core/logger/api_client_adapter_test.go

@@ -1,12 +1,13 @@
 package logger
 
 import (
+	"net/http"
+	"testing"
+
 	"github.com/h2non/gock"
 	retailcrm "github.com/retailcrm/api-client-go/v2"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"net/http"
-	"testing"
 )
 
 func TestAPIClientAdapter(t *testing.T) {

core/logger/attrs.go

@@ -2,10 +2,11 @@ package logger
 
 import (
 	"fmt"
-	json "github.com/goccy/go-json"
 	"io"
 	"net/http"
 
+	json "github.com/goccy/go-json"
+
 	"go.uber.org/zap"
 )
 

core/logger/attrs_test.go

@@ -4,11 +4,12 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/mock"
 	"io"
 	"net/http"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
 )
 
 func TestErr(t *testing.T) {

core/logger/buffer_logger_test.go

@@ -4,11 +4,12 @@ import (
 	"bufio"
 	"bytes"
 	"encoding/json"
-	"github.com/guregu/null/v5"
 	"io"
 	"os"
 	"sync"
 
+	"github.com/guregu/null/v5"
+
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 )

core/logger/default.go

@@ -27,7 +27,8 @@ type Logger interface {
 	Warn(msg string, fields ...zap.Field)
 	// Error logs an error-level message with the given fields.
 	Error(msg string, fields ...zap.Field)
-	// DPanic logs a debug-panic-level message with the given fields and panics if the logger's panic level is set to a non-zero value.
+	// DPanic logs a debug-panic-level message with the given fields and panics
+	// if the logger's panic level is set to a non-zero value.
 	DPanic(msg string, fields ...zap.Field)
 	// Panic logs a panic-level message with the given fields and panics immediately.
 	Panic(msg string, fields ...zap.Field)

core/logger/default_test.go

@@ -1,11 +1,12 @@
 package logger
 
 import (
+	"testing"
+
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
 	"go.uber.org/zap"
-	"testing"
 )
 
 type TestDefaultSuite struct {

core/logger/gin_test.go

@@ -1,12 +1,13 @@
 package logger
 
 import (
-	"github.com/gin-gonic/gin"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
 	"net/http"
 	"net/http/httptest"
 	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestGinMiddleware(t *testing.T) {

core/logger/json_with_context_encoder.go

@@ -18,19 +18,21 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
+// nolint
 package logger
 
 import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"go.uber.org/zap"
-	"go.uber.org/zap/zapcore"
 	"io"
 	"math"
 	"time"
 	"unicode/utf8"
 
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+
 	"go.uber.org/zap/buffer"
 )
 

core/logger/mg_transport_client_adapter.go

@@ -2,8 +2,10 @@ package logger
 
 import (
 	"fmt"
-	v1 "github.com/retailcrm/mg-transport-api-client-go/v1"
+
 	"go.uber.org/zap"
+
+	v1 "github.com/retailcrm/mg-transport-api-client-go/v1"
 )
 
 const (
@@ -36,10 +38,10 @@ func (m *mgTransportClientAdapter) Debugf(msg string, args ...interface{}) {
 		if len(args) > 1 {
 			uri = fmt.Sprint(args[1])
 		}
-		if len(args) > 2 {
+		if len(args) > 2 { // nolint:gomnd
 			token = fmt.Sprint(args[2])
 		}
-		if len(args) > 3 {
+		if len(args) > 3 { // nolint:gomnd
 			body = args[3]
 		}
 		m.log.Debug("MG TRANSPORT API Request",

core/logger/mg_transport_client_adapter_test.go

@@ -1,12 +1,14 @@
 package logger
 
 import (
-	"github.com/h2non/gock"
-	v1 "github.com/retailcrm/mg-transport-api-client-go/v1"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
 	"net/http"
 	"testing"
+
+	"github.com/h2non/gock"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	v1 "github.com/retailcrm/mg-transport-api-client-go/v1"
 )
 
 func TestMGTransportClientAdapter(t *testing.T) {

core/logger/nil.go

@@ -13,11 +13,11 @@ func NewNil() Logger {
 	return &Nil{}
 }
 
-func (l *Nil) With(fields ...zap.Field) Logger {
+func (l *Nil) With(_ ...zap.Field) Logger {
 	return l
 }
 
-func (l *Nil) WithLazy(fields ...zap.Field) Logger {
+func (l *Nil) WithLazy(_ ...zap.Field) Logger {
 	return l
 }
 
@@ -25,35 +25,35 @@ func (l *Nil) Level() zapcore.Level {
 	return zapcore.DebugLevel
 }
 
-func (l *Nil) Check(lvl zapcore.Level, msg string) *zapcore.CheckedEntry {
+func (l *Nil) Check(_ zapcore.Level, _ string) *zapcore.CheckedEntry {
 	return &zapcore.CheckedEntry{}
 }
 
-func (l *Nil) Log(lvl zapcore.Level, msg string, fields ...zap.Field) {}
+func (l *Nil) Log(_ zapcore.Level, _ string, _ ...zap.Field) {}
 
-func (l *Nil) Debug(msg string, fields ...zap.Field) {}
+func (l *Nil) Debug(_ string, _ ...zap.Field) {}
 
-func (l *Nil) Info(msg string, fields ...zap.Field) {}
+func (l *Nil) Info(_ string, _ ...zap.Field) {}
 
-func (l *Nil) Warn(msg string, fields ...zap.Field) {}
+func (l *Nil) Warn(_ string, _ ...zap.Field) {}
 
-func (l *Nil) Error(msg string, fields ...zap.Field) {}
+func (l *Nil) Error(_ string, _ ...zap.Field) {}
 
-func (l *Nil) DPanic(msg string, fields ...zap.Field) {}
+func (l *Nil) DPanic(_ string, _ ...zap.Field) {}
 
-func (l *Nil) Panic(msg string, fields ...zap.Field) {}
+func (l *Nil) Panic(_ string, _ ...zap.Field) {}
 
-func (l *Nil) Fatal(msg string, fields ...zap.Field) {}
+func (l *Nil) Fatal(_ string, _ ...zap.Field) {}
 
-func (l *Nil) ForHandler(handler any) Logger {
+func (l *Nil) ForHandler(_ any) Logger {
 	return l
 }
 
-func (l *Nil) ForConnection(conn any) Logger {
+func (l *Nil) ForConnection(_ any) Logger {
 	return l
 }
 
-func (l *Nil) ForAccount(acc any) Logger {
+func (l *Nil) ForAccount(_ any) Logger {
 	return l
 }
 

core/logger/pool_test.go

@@ -1,8 +1,9 @@
 package logger
 
 import (
-	"github.com/stretchr/testify/assert"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestPool(t *testing.T) {

core/logger/writer_adapter_test.go

@@ -1,10 +1,11 @@
 package logger
 
 import (
+	"testing"
+
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap"
-	"testing"
 )
 
 func TestWriterAdapter(t *testing.T) {

core/logger/zabbix_collector_adapter_test.go

@@ -2,9 +2,10 @@ package logger
 
 import (
 	"errors"
+	"testing"
+
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"testing"
 )
 
 func TestZabbixCollectorAdapter(t *testing.T) {

core/middleware/csrf.go

@@ -6,7 +6,6 @@ import (
 	"crypto/sha1"
 	"encoding/base64"
 	"io"
-	"io/ioutil"
 	"math/rand"
 	"time"
 
@@ -57,10 +56,10 @@ var DefaultCSRFTokenGetter = func(c *gin.Context) string {
 	} else if t := r.Header.Get("X-XSRF-Token"); len(t) > 0 {
 		return t
 	} else if c.Request.Body != nil {
-		data, _ := ioutil.ReadAll(c.Request.Body)
-		c.Request.Body = ioutil.NopCloser(bytes.NewReader(data))
+		data, _ := io.ReadAll(c.Request.Body)
+		c.Request.Body = io.NopCloser(bytes.NewReader(data))
 		t := r.FormValue("csrf_token")
-		c.Request.Body = ioutil.NopCloser(bytes.NewReader(data))
+		c.Request.Body = io.NopCloser(bytes.NewReader(data))
 
 		if len(t) > 0 {
 			return t
@@ -91,6 +90,7 @@ type CSRF struct {
 // csrfTokenGetter will be used to obtain token.
 //
 // Usage (with random salt):
+//
 //	core.NewCSRF("", "super secret", "csrf_session", store, func (c *gin.Context, reason core.CSRFErrorReason) {
 //		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid CSRF token"})
 //	}, core.DefaultCSRFTokenGetter)
@@ -99,9 +99,11 @@ type CSRF struct {
 // - don't forget to restore Body data!
 //
 // Body in http.Request is io.ReadCloser instance. Reading CSRF token from form like that:
+//
 //	if t := r.FormValue("csrf_token"); len(t) > 0 {
 //		return t
 //	}
+//
 // will close body - and all next middlewares won't be able to read body at all!
 //
 // Use DefaultCSRFTokenGetter as example to implement your own token getter.
@@ -185,11 +187,11 @@ func (x *CSRF) generateSalt() string {
 
 // pseudoRandomString generates pseudo-random string with specified length.
 func (x *CSRF) pseudoRandomString(length int) string {
-	rand.Seed(time.Now().UnixNano())
+	r := rand.New(rand.NewSource(time.Now().UnixNano())) // nolint:gosec
 	data := make([]byte, length)
 
 	for i := 0; i < length; i++ { // it is supposed to use pseudo-random data.
-		data[i] = byte(65 + rand.Intn(90-65)) // nolint:gosec,gomnd
+		data[i] = byte(65 + r.Intn(90-65)) // nolint:gosec,gomnd
 	}
 
 	return string(data)
@@ -209,6 +211,7 @@ func (x *CSRF) CSRFFromContext(c *gin.Context) string {
 
 // GenerateCSRFMiddleware returns gin.HandlerFunc which will generate CSRF token
 // Usage:
+//
 //	engine := gin.New()
 //	csrf := NewCSRF("salt", "secret", "not_found", "incorrect", localizer)
 //	engine.Use(csrf.GenerateCSRFMiddleware())
@@ -216,8 +219,8 @@ func (x *CSRF) GenerateCSRFMiddleware() gin.HandlerFunc {
 	return func(c *gin.Context) {
 		session, _ := x.store.Get(c.Request, x.sessionName)
 
-		if i, ok := session.Values["csrf_token"]; ok {
-			if i, ok := i.(string); !ok || i == "" {
+		if i, ok := session.Values["csrf_token"]; ok { // nolint:nestif
+			if i, ok := i.(string); !ok || i == "" { // nolint:nestif
 				if x.fillToken(session, c) != nil {
 					x.abortFunc(c, CSRFErrorCannotStoreTokenInSession)
 					c.Abort()
@@ -243,6 +246,7 @@ func (x *CSRF) fillToken(s *sessions.Session, c *gin.Context) error {
 
 // VerifyCSRFMiddleware verifies CSRF token
 // Usage:
+//
 //	engine := gin.New()
 //	engine.Use(csrf.VerifyCSRFMiddleware())
 func (x *CSRF) VerifyCSRFMiddleware(ignoredMethods []string) gin.HandlerFunc {
@@ -254,9 +258,9 @@ func (x *CSRF) VerifyCSRFMiddleware(ignoredMethods []string) gin.HandlerFunc {
 		var token string
 		session, _ := x.store.Get(c.Request, x.sessionName)
 
-		if i, ok := session.Values["csrf_token"]; ok {
+		if i, ok := session.Values["csrf_token"]; ok { // nolint:nestif
 			var v string
-			if v, ok = i.(string); !ok || v == "" {
+			if v, ok = i.(string); !ok || v == "" { // nolint:nestif
 				if !ok {
 					x.abortFunc(c, CSRFErrorIncorrectTokenType)
 				} else if v == "" {

core/middleware/csrf_test.go

@@ -3,7 +3,6 @@ package middleware
 import (
 	"bytes"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@@ -32,7 +31,7 @@ func TestCSRF_DefaultCSRFTokenGetter_Empty(t *testing.T) {
 		URL: &url.URL{
 			RawQuery: "",
 		},
-		Body: ioutil.NopCloser(bytes.NewReader([]byte(""))),
+		Body: io.NopCloser(bytes.NewReader([]byte(""))),
 	}}
 
 	assert.Empty(t, DefaultCSRFTokenGetter(c))
@@ -85,14 +84,14 @@ func TestCSRF_DefaultCSRFTokenGetter_Form(t *testing.T) {
 			RawQuery: "",
 		},
 		Header: headers,
-		Body:   ioutil.NopCloser(bytes.NewReader([]byte(""))),
+		Body:   io.NopCloser(bytes.NewReader([]byte(""))),
 	}}
 	c.Request.PostForm = url.Values{"csrf_token": {"token"}}
 
 	assert.NotEmpty(t, DefaultCSRFTokenGetter(c))
 	assert.Equal(t, "token", DefaultCSRFTokenGetter(c))
 
-	_, err := ioutil.ReadAll(c.Request.Body)
+	_, err := io.ReadAll(c.Request.Body)
 	assert.NoError(t, err)
 }
 

core/sentry.go

@@ -23,6 +23,8 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
+const recoveryMiddlewareSkipFrames = 3
+
 // ErrorHandlerFunc will handle errors.
 type ErrorHandlerFunc func(recovery interface{}, c *gin.Context)
 
@@ -249,7 +251,7 @@ func (s *Sentry) recoveryMiddleware() gin.HandlerFunc { // nolint
 				}
 				if l != nil {
 					// TODO: Check if we can output stacktraces with prefix data like before if we really need it.
-					stack := stacktrace.FormattedStack(3, "trace: ")
+					stack := stacktrace.FormattedStack(recoveryMiddlewareSkipFrames, "trace: ")
 					formattedErr := logger.Err(err)
 					httpRequest, _ := httputil.DumpRequest(c.Request, false)
 					headers := strings.Split(string(httpRequest), "\r\n")

core/sentry_test.go

@@ -31,12 +31,12 @@ type sentryMockTransport struct {
 	sending   sync.RWMutex
 }
 
-func (s *sentryMockTransport) Flush(timeout time.Duration) bool {
+func (s *sentryMockTransport) Flush(_ time.Duration) bool {
 	// noop
 	return true
 }
 
-func (s *sentryMockTransport) Configure(options sentry.ClientOptions) {
+func (s *sentryMockTransport) Configure(_ sentry.ClientOptions) {
 	// noop
 }
 

core/stacktrace/error_test.go

@@ -18,7 +18,7 @@ func TestError(t *testing.T) {
 
 func (t *ErrorTest) TestAppendToError() {
 	err := errors.New("test error")
-	_, ok := err.(StackTraced)
+	_, ok := err.(StackTraced) // nolint:errorlint
 
 	t.Assert().False(ok)
 
@@ -28,16 +28,16 @@ func (t *ErrorTest) TestAppendToError() {
 	t.Assert().Nil(AppendToError(nil))
 	t.Assert().Implements((*StackTraced)(nil), withTrace)
 	t.Assert().Implements((*StackTraced)(nil), twiceTrace)
-	t.Assert().Equal(withTrace.(StackTraced).StackTrace(), twiceTrace.(StackTraced).StackTrace())
+	t.Assert().Equal(withTrace.(StackTraced).StackTrace(), twiceTrace.(StackTraced).StackTrace()) // nolint:errorlint
 }
 
 func (t *ErrorTest) TestCauseUnwrap() {
 	err := errors.New("test error")
 	wrapped := AppendToError(err)
 
-	t.Assert().Equal(err, wrapped.(*withStack).Cause())
+	t.Assert().Equal(err, wrapped.(*withStack).Cause()) // nolint:errorlint
 	t.Assert().Equal(err, errors.Unwrap(wrapped))
-	t.Assert().Equal(wrapped.(*withStack).Cause(), errors.Unwrap(wrapped))
+	t.Assert().Equal(wrapped.(*withStack).Cause(), errors.Unwrap(wrapped)) // nolint:errorlint
 }
 
 func (t *ErrorTest) TestFormat() {

core/stacktrace/stack.go

@@ -5,7 +5,7 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
+	"os"
 	"path"
 	"runtime"
 	"strconv"
@@ -78,19 +78,19 @@ func (f Frame) Format(s fmt.State, verb rune) {
 	case 's':
 		switch {
 		case s.Flag('+'):
-			io.WriteString(s, f.name())
-			io.WriteString(s, "\n\t")
-			io.WriteString(s, f.file())
+			_, _ = io.WriteString(s, f.name())
+			_, _ = io.WriteString(s, "\n\t")
+			_, _ = io.WriteString(s, f.file())
 		default:
-			io.WriteString(s, path.Base(f.file()))
+			_, _ = io.WriteString(s, path.Base(f.file()))
 		}
 	case 'd':
-		io.WriteString(s, strconv.Itoa(f.line()))
+		_, _ = io.WriteString(s, strconv.Itoa(f.line()))
 	case 'n':
-		io.WriteString(s, funcname(f.name()))
+		_, _ = io.WriteString(s, funcname(f.name()))
 	case 'v':
 		f.Format(s, 's')
-		io.WriteString(s, ":")
+		_, _ = io.WriteString(s, ":")
 		f.Format(s, 'd')
 	}
 }
@@ -122,11 +122,11 @@ func (st StackTrace) Format(s fmt.State, verb rune) {
 		switch {
 		case s.Flag('+'):
 			for _, f := range st {
-				io.WriteString(s, "\n")
+				_, _ = io.WriteString(s, "\n")
 				f.Format(s, verb)
 			}
 		case s.Flag('#'):
-			fmt.Fprintf(s, "%#v", []Frame(st))
+			_, _ = fmt.Fprintf(s, "%#v", []Frame(st))
 		default:
 			st.formatSlice(s, verb)
 		}
@@ -138,14 +138,14 @@ func (st StackTrace) Format(s fmt.State, verb rune) {
 // formatSlice will format this StackTrace into the given buffer as a slice of
 // Frame, only valid when called with '%s' or '%v'.
 func (st StackTrace) formatSlice(s fmt.State, verb rune) {
-	io.WriteString(s, "[")
+	_, _ = io.WriteString(s, "[")
 	for i, f := range st {
 		if i > 0 {
-			io.WriteString(s, " ")
+			_, _ = io.WriteString(s, " ")
 		}
 		f.Format(s, verb)
 	}
-	io.WriteString(s, "]")
+	_, _ = io.WriteString(s, "]")
 }
 
 // stack represents a stack of program counters.
@@ -159,7 +159,7 @@ func (s *stack) Format(st fmt.State, verb rune) {
 	if verb == 'v' && st.Flag('+') {
 		for _, pc := range *s {
 			f := Frame(pc)
-			fmt.Fprintf(st, "\n%+v", f)
+			_, _ = fmt.Fprintf(st, "\n%+v", f)
 		}
 	}
 }
@@ -185,16 +185,16 @@ func FormattedStack(skip int, prefix string) []byte {
 			break
 		}
 		// Print this much at least.  If we can't find the source, it won't show.
-		fmt.Fprintf(buf, "%s%s:%d (0x%x)\n", prefix, file, line, pc)
+		_, _ = fmt.Fprintf(buf, "%s%s:%d (0x%x)\n", prefix, file, line, pc)
 		if file != lastFile {
-			data, err := ioutil.ReadFile(file)
+			data, err := os.ReadFile(file)
 			if err != nil {
 				continue
 			}
 			lines = bytes.Split(data, []byte{'\n'})
 			lastFile = file
 		}
-		fmt.Fprintf(buf, "%s\t%s: %s\n", prefix, function(pc), source(lines, line))
+		_, _ = fmt.Fprintf(buf, "%s\t%s: %s\n", prefix, function(pc), source(lines, line))
 	}
 	return buf.Bytes()
 }

core/template_test.go

@@ -3,7 +3,6 @@ package core
 import (
 	"fmt"
 	"html/template"
-	"io/ioutil"
 	"os"
 	"path"
 	"testing"
@@ -37,8 +36,8 @@ func (t *TemplateTest) initTestData() {
 		require.Nil(t.T(), err)
 		data1 := []byte(`data {{template "body" .}}`)
 		data2 := []byte(`{{define "body"}}test {{"test" | trans}}{{end}}`)
-		err1 := ioutil.WriteFile(fmt.Sprintf(testTemplatesFile, 1), data1, os.ModePerm)
-		err2 := ioutil.WriteFile(fmt.Sprintf(testTemplatesFile, 2), data2, os.ModePerm)
+		err1 := os.WriteFile(fmt.Sprintf(testTemplatesFile, 1), data1, os.ModePerm)
+		err2 := os.WriteFile(fmt.Sprintf(testTemplatesFile, 2), data2, os.ModePerm)
 		require.Nil(t.T(), err1)
 		require.Nil(t.T(), err2)
 	}

core/util/errorutil/err_collector.go

@@ -18,6 +18,7 @@ import (
 // because AsError() returns nil if there are no errors in the list.
 //
 // Example:
+//
 //	err := errorutil.NewCollector().
 //	            Do(errors.New("error 1")).
 //	            Do(errors.New("error 2"), errors.New("error 3"))
@@ -25,11 +26,13 @@ import (
 //	fmt.Println(err)
 //
 // This code will produce something like this:
+//
 //	#1 err at /home/user/main.go:62: error 1
 //	#2 err at /home/user/main.go:63: error 2
 //	#3 err at /home/user/main.go:64: error 3
 //
 // You can also iterate over the error to use their data instead of using predefined message:
+//
 //	err := errorutil.NewCollector().
 //	            Do(errors.New("error 1")).
 //	            Do(errors.New("error 2"), errors.New("error 3"))
@@ -39,11 +42,13 @@ import (
 //	}
 //
 // This code will produce output that looks like this:
+//
 //	Error at /home/user/main.go:164: error 0
 //	Error at /home/user/main.go:164: error 1
 //	Error at /home/user/main.go:164: error 2
 //
 // Example with GORM migration (Collector is returned as an error here).
+//
 //	return errorutil.NewCollector().Do(
 //	    db.CreateTable(models.Account{}, models.Connection{}).Error,
 //	    db.Table("account").AddUniqueIndex("account_key", "channel").Error,

core/util/errorutil/handler_errors.go

@@ -14,6 +14,7 @@ type ListResponse struct {
 
 // GetErrorResponse returns ErrorResponse with specified status code
 // Usage (with gin):
+//
 //	context.JSON(GetErrorResponse(http.StatusPaymentRequired, "Not enough money"))
 func GetErrorResponse(statusCode int, err string) (int, interface{}) {
 	return statusCode, Response{
@@ -23,6 +24,7 @@ func GetErrorResponse(statusCode int, err string) (int, interface{}) {
 
 // BadRequest returns ErrorResponse with code 400
 // Usage (with gin):
+//
 //	context.JSON(BadRequest("invalid data"))
 func BadRequest(err string) (int, interface{}) {
 	return GetErrorResponse(http.StatusBadRequest, err)
@@ -30,6 +32,7 @@ func BadRequest(err string) (int, interface{}) {
 
 // Unauthorized returns ErrorResponse with code 401
 // Usage (with gin):
+//
 //	context.JSON(Unauthorized("invalid credentials"))
 func Unauthorized(err string) (int, interface{}) {
 	return GetErrorResponse(http.StatusUnauthorized, err)
@@ -37,6 +40,7 @@ func Unauthorized(err string) (int, interface{}) {
 
 // Forbidden returns ErrorResponse with code 403
 // Usage (with gin):
+//
 //	context.JSON(Forbidden("forbidden"))
 func Forbidden(err string) (int, interface{}) {
 	return GetErrorResponse(http.StatusForbidden, err)
@@ -44,6 +48,7 @@ func Forbidden(err string) (int, interface{}) {
 
 // InternalServerError returns ErrorResponse with code 500
 // Usage (with gin):
+//
 //	context.JSON(BadRequest("invalid data"))
 func InternalServerError(err string) (int, interface{}) {
 	return GetErrorResponse(http.StatusInternalServerError, err)

core/util/httputil/http_client_builder.go

@@ -5,12 +5,13 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"fmt"
-	"go.uber.org/zap"
 	"net"
 	"net/http"
 	"net/url"
 	"time"
 
+	"go.uber.org/zap"
+
 	"github.com/pkg/errors"
 	"github.com/retailcrm/mg-transport-core/v2/core/config"
 	"github.com/retailcrm/mg-transport-core/v2/core/logger"
@@ -229,7 +230,7 @@ func (b *HTTPClientBuilder) buildMocks() error {
 		return errors.New("dialer must be built first")
 	}
 
-	if b.mockHost != "" && b.mockPort != "" && len(b.mockedDomains) > 0 {
+	if b.mockHost != "" && b.mockPort != "" && len(b.mockedDomains) > 0 { // nolint:nestif
 		b.log("Mock address has been set", zap.String("address", net.JoinHostPort(b.mockHost, b.mockPort)))
 		b.log("Mocked domains: ")
 

core/util/httputil/http_client_builder_test.go

@@ -7,7 +7,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
@@ -209,6 +208,7 @@ x5porosgI2RgOTTwmiYOcYQTS2650jYydHhK16Gu2b3UKernO16mAWXNDWfvS2bk
 nAI2GL2ACEdOCyRvgq16AycJJYU7nYQ+t9aveefx0uhbYYIVeYub9NxmCfD3MojI
 saG/63vo0ng851n90DVoMRWx9n1CjEvss/vvz+jXIl9njaCtizN3WUf1NwUB
 -----END CERTIFICATE-----`
+	// nolint:gosec
 	keyFileData := `-----BEGIN RSA PRIVATE KEY-----
 MIIEogIBAAKCAQEArcVIOmlAXGS4xGBIM8xPgfMALMiunU/X22w3zv+Z/T4R48UC
 5402K7PcQAJe0Qmo/J1INEc319/Iw9UxsJBawtbtaYzn++DlTF7MNsWu4JmZZyXn
@@ -237,9 +237,9 @@ weywTxDl/OD5ybNkZIRKsIXciFYG1VCGO2HNGN9qJcV+nJ63kyrIBauwUkuEhiN5
 uf/TQPpjrGW5nxOf94qn6FzV2WSype9BcM5MD7z7rk202Fs7Zqc=
 -----END RSA PRIVATE KEY-----`
 
-	certFile, err := ioutil.TempFile("/tmp", "cert_")
+	certFile, err := os.CreateTemp("/tmp", "cert_")
 	require.NoError(t.T(), err, "cannot create temp cert file")
-	keyFile, err := ioutil.TempFile("/tmp", "key_")
+	keyFile, err := os.CreateTemp("/tmp", "key_")
 	require.NoError(t.T(), err, "cannot create temp key file")
 
 	_, err = certFile.WriteString(certFileData)
@@ -252,7 +252,7 @@ uf/TQPpjrGW5nxOf94qn6FzV2WSype9BcM5MD7z7rk202Fs7Zqc=
 		errorutil.Collect(keyFile.Sync(), keyFile.Close()), "cannot sync and close temp key file")
 
 	mux := &http.ServeMux{}
-	srv := &http.Server{Addr: mockServerAddr, Handler: mux}
+	srv := &http.Server{Addr: mockServerAddr, Handler: mux, ReadHeaderTimeout: defaultDialerTimeout}
 	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusCreated)
 		_, _ = io.WriteString(w, "ok")
@@ -307,7 +307,7 @@ uf/TQPpjrGW5nxOf94qn6FzV2WSype9BcM5MD7z7rk202Fs7Zqc=
 
 	defer resp.Body.Close()
 
-	data, err := ioutil.ReadAll(resp.Body)
+	data, err := io.ReadAll(resp.Body)
 	require.NoError(t.T(), err, "error while reading body")
 
 	assert.Equal(t.T(), http.StatusCreated, resp.StatusCode, "invalid status code")

core/util/testutil/gock.go

@@ -46,7 +46,7 @@ func printRequestData(t UnmatchedRequestsTestingT, r *http.Request) {
 		}
 	}
 
-	if r.Body == nil {
+	if r.Body == nil { // nolint:nestif
 		t.Log("No body is present.")
 	} else {
 		data, err := io.ReadAll(r.Body)

core/util/testutil/json_record_scanner.go

@@ -3,8 +3,9 @@ package testutil
 import (
 	"bufio"
 	"encoding/json"
-	"github.com/guregu/null/v5"
 	"io"
+
+	"github.com/guregu/null/v5"
 )
 
 type LogRecord struct {

core/util/testutil/json_record_scanner_test.go

@@ -2,11 +2,12 @@ package testutil
 
 import (
 	"bytes"
-	"github.com/stretchr/testify/suite"
 	"io"
 	"strings"
 	"testing"
 	"time"
+
+	"github.com/stretchr/testify/suite"
 )
 
 type JSONRecordScannerTest struct {

core/util/testutil/translations_extractor.go

@@ -3,7 +3,6 @@ package testutil
 import (
 	"errors"
 	"io/fs"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sort"
@@ -63,8 +62,8 @@ func (t *TranslationsExtractor) loadYAMLFile(fileName string) (map[string]interf
 		err     error
 	)
 
-	if info, err = os.Stat(fileName); err == nil {
-		if !info.IsDir() {
+	if info, err = os.Stat(fileName); err == nil { // nolint:nestif
+		if !info.IsDir() { // nolint:nestif
 			var (
 				path   string
 				source []byte
@@ -75,7 +74,7 @@ func (t *TranslationsExtractor) loadYAMLFile(fileName string) (map[string]interf
 				return dataMap, err
 			}
 
-			if source, err = ioutil.ReadFile(path); err != nil {
+			if source, err = os.ReadFile(path); err != nil {
 				return dataMap, err
 			}
 

core/util/testutil/translations_extractor_test.go

@@ -1,7 +1,6 @@
 package testutil
 
 import (
-	"io/ioutil"
 	"os"
 	"reflect"
 	"sort"
@@ -40,7 +39,7 @@ func (t *TranslationsExtractorTest) SetupSuite() {
 	data, _ := yaml.Marshal(translation)
 	// It's not regular temporary file. Little hack in order to test translations extractor.
 	// nolint:gosec
-	errWrite := ioutil.WriteFile("/tmp/translate.en.yml", data, os.ModePerm)
+	errWrite := os.WriteFile("/tmp/translate.en.yml", data, os.ModePerm)
 	require.NoError(t.T(), errWrite)
 
 	t.extractor = NewTranslationsExtractor("translate.{}.yml")

core/util/utils.go

@@ -20,9 +20,10 @@ import (
 	"github.com/aws/aws-sdk-go/service/s3/s3manager"
 	"github.com/gin-gonic/gin"
 	retailcrm "github.com/retailcrm/api-client-go/v2"
-	v1 "github.com/retailcrm/mg-transport-api-client-go/v1"
 	"github.com/retailcrm/mg-transport-core/v2/core/config"
 
+	v1 "github.com/retailcrm/mg-transport-api-client-go/v1"
+
 	"github.com/retailcrm/mg-transport-core/v2/core/logger"
 
 	"github.com/retailcrm/mg-transport-core/v2/core/util/errorutil"

core/util/utils_test.go

@@ -11,11 +11,12 @@ import (
 	"github.com/h2non/gock"
 
 	retailcrm "github.com/retailcrm/api-client-go/v2"
-	v1 "github.com/retailcrm/mg-transport-api-client-go/v1"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
 
+	v1 "github.com/retailcrm/mg-transport-api-client-go/v1"
+
 	"github.com/retailcrm/mg-transport-core/v2/core/config"
 
 	"github.com/retailcrm/mg-transport-core/v2/core/logger"