update opentelemetry version (#6)

Co-authored-by: andrey1s <andrey@4devs.pro>
Reviewed-on: #6
Co-authored-by: andrey <andrey@4devs.io>
Co-committed-by: andrey <andrey@4devs.io>

.drone.yml

@@ -3,7 +3,7 @@ name: default
 
 steps:
 - name: test 
-  image: golang:1.14.2
+  image: golang:1.18.1
   volumes:
   - name: deps
     path: /go/src/mod
@@ -11,40 +11,10 @@ steps:
   - go test 
 
 - name: golangci-lint
-  image: golangci/golangci-lint:v1.29
+  image: golangci/golangci-lint:v1.49
   commands:
   - golangci-lint run
 
-- name: logrus golangci-lint
-  image: golangci/golangci-lint:v1.29
-  commands:
-  - cd logrus
-  - golangci-lint run
-
-- name: logrus test
-  image: golang:1.14.2
-  volumes:
-    - name: deps
-      path: /go/src/mod
-  commands:
-  - cd logrus
-  - go test 
-
-- name: zap golangci-lint
-  image: golangci/golangci-lint:v1.29
-  commands:
-  - cd zap
-  - golangci-lint run
-
-- name: zap test
-  image: golang:1.14.2
-  volumes:
-    - name: deps
-      path: /go/src/mod
-  commands:
-  - cd zap
-  - go test
-
 volumes:
 - name: deps
   temp: {}

.golangci.yml

@@ -9,21 +9,45 @@ linters-settings:
       min-occurrences: 2
     gocyclo:
       min-complexity: 15
-    golint:
-      min-confidence: 0
     govet:
       check-shadowing: true
     lll:
       line-length: 140
-    maligned:
+    fieldalignment:
       suggest-new: true
     misspell:
       locale: US  
     exhaustive:
       default-signifies-exhaustive: true
+    varnamelen:
+      min-name-length: 2
+      ignore-names:
+        - err
+        - "n"
+        - i
+    tagliatelle:
+      case:
+        use-field-name: true
+        rules:
+          json: snake
+          yaml: camel
+          xml: camel
+          bson: camel
+          avro: snake
 
 linters:
     enable-all: true
+    disable:
+      - exhaustivestruct
+      - maligned
+      - deadcode
+      - interfacer
+      - golint
+      - varcheck
+      - nosnakecase
+      - scopelint
+      - ifshort
+      - structcheck
 
 issues:
   # Excluding configuration per-path, per-linter, per-text and per-source
@@ -31,3 +55,5 @@ issues:
     - path: _test\.go
       linters:
         - gomnd
+        - ireturn
+        - exhaustruct

LICENSE

@@ -1,4 +1,4 @@
-MIT License Copyright (c) 2020 go-4devs
+MIT License Copyright (c) 2020-2022 4devs
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

bench_test.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"testing"
 	"time"
 
@@ -12,7 +12,7 @@ import (
 	"gitoa.ru/go-4devs/log/field"
 )
 
-// nolint: gochecknoglobals
+//nolint:gochecknoglobals
 var (
 	errExample  = errors.New("fail")
 	_messages   = fakeMessages(1000)
@@ -118,7 +118,7 @@ func fakeSugarFields() []interface{} {
 }
 
 func NewLogger() log.Logger {
-	return log.New(log.WithWriter(ioutil.Discard))
+	return log.New(log.WithWriter(io.Discard))
 }
 
 func BenchmarkDisabledWithoutFields(b *testing.B) {

entry/caller.go

@@ -7,14 +7,14 @@ import (
 )
 
 func Caller(depth int, full bool) string {
-	const offset = 4
+	const offset = 3
-	_, file, line, ok := runtime.Caller(depth + offset)
+	_, file, line, has := runtime.Caller(depth + offset)
 
-	if !ok {
+	if !has {
 		file, line = "???", 0
 	}
 
-	if !full && ok {
+	if !full && has {
 		file = filepath.Base(file)
 	}
 

entry/entry.go

@@ -1,6 +1,7 @@
 package entry
 
 import (
+	"fmt"
 	"strings"
 
 	"gitoa.ru/go-4devs/log/field"
@@ -13,9 +14,9 @@ const (
 
 type Option func(*Entry)
 
-func WithCapacity(cap int) Option {
+func WithCapacity(c int) Option {
 	return func(e *Entry) {
-		e.fields = make(field.Fields, 0, cap+1)
+		e.fields = make(field.Fields, 0, c+1)
 	}
 }
 
@@ -27,7 +28,14 @@ func WithFields(fields ...field.Field) Option {
 
 func WithMessage(msg string) Option {
 	return func(e *Entry) {
-		e.msg = msg
+		e.format = msg
+	}
+}
+
+func WithMessagef(format string, args ...interface{}) Option {
+	return func(e *Entry) {
+		e.format = format
+		e.args = args
 	}
 }
 
@@ -38,27 +46,32 @@ func WithLevel(lvl level.Level) Option {
 }
 
 func New(opts ...Option) *Entry {
-	e := &Entry{
+	entry := &Entry{
 		fields: make(field.Fields, 0, defaultCap+1),
 		level:  level.Debug,
+		format: "",
+		args:   make([]interface{}, 0, defaultCap+1),
 	}
 
 	for _, opt := range opts {
-		opt(e)
+		opt(entry)
 	}
 
-	return e
+	return entry
 }
 
 // Entry slice field.
 type Entry struct {
-	msg    string
+	format string
+	args   []interface{}
 	level  level.Level
 	fields field.Fields
 }
 
 func (e *Entry) Reset() {
 	e.fields = e.fields[:0]
+	e.args = e.args[:0]
+	e.format = ""
 }
 
 func (e *Entry) Fields() field.Fields {
@@ -72,7 +85,7 @@ func (e *Entry) String() string {
 	}
 
 	str := make([]string, len(e.fields)+1)
-	str[0] = e.msg
+	str[0] = e.Message()
 
 	for i, field := range e.fields {
 		str[i+1] = field.String()
@@ -82,7 +95,14 @@ func (e *Entry) String() string {
 }
 
 func (e *Entry) Message() string {
-	return e.msg
+	switch {
+	case len(e.args) > 0 && e.format != "":
+		return fmt.Sprintf(e.format, e.args...)
+	case len(e.args) > 0:
+		return fmt.Sprint(e.args...)
+	default:
+		return e.format
+	}
 }
 
 func (e *Entry) Level() level.Level {
@@ -108,7 +128,18 @@ func (e *Entry) SetMessage(msg string) *Entry {
 		return New().SetMessage(msg)
 	}
 
-	e.msg = msg
+	e.format = msg
+
+	return e
+}
+
+func (e *Entry) SetMessagef(format string, args ...interface{}) *Entry {
+	if e == nil {
+		return New().SetMessagef(format, args...)
+	}
+
+	e.format = format
+	e.args = append(e.args[:0], args...)
 
 	return e
 }

entry/pool.go

@@ -2,13 +2,14 @@ package entry
 
 import "sync"
 
-// nolint: gochecknoglobals
+//nolint:gochecknoglobals
 var pool = sync.Pool{
 	New: func() interface{} {
 		return New()
 	},
 }
 
+//nolint:forcetypeassert
 func Get() *Entry {
 	e := pool.Get().(*Entry)
 	e.Reset()

field/encoder.go

@@ -2,6 +2,7 @@ package field
 
 import "time"
 
+//nolint:interfacebloat
 type Encoder interface {
 	// Built-in types.
 	AddArray(key string, value Value)

field/field.go

@@ -255,13 +255,13 @@ type Field struct {
 	value Value
 }
 
-//nolint: gocyclo
+//nolint:gocyclo,cyclop
 func (f Field) AddTo(enc Encoder) {
 	key := string(f.key)
 
 	switch {
 	case f.value.IsArray():
-		enc.AddAny(key, f.value)
+		enc.AddArray(key, f.value)
 	case f.value.IsNil():
 		enc.AddNil(key)
 	case f.value.IsBool():

field/fields.go

@@ -19,11 +19,11 @@ func (f Fields) Len() int {
 }
 
 func (f Fields) AsMap() MapField {
-	m := make(MapField, len(f))
+	fields := make(MapField, len(f))
 
 	for _, field := range f {
-		m[field.Key()] = field.Value()
+		fields[field.Key()] = field.Value()
 	}
 
-	return m
+	return fields
 }

field/fields_test.go

@@ -0,0 +1,18 @@
+package field_test
+
+import (
+	"testing"
+
+	"gitoa.ru/go-4devs/log/field"
+)
+
+func TestFields_Append(t *testing.T) {
+	t.Parallel()
+
+	fields := field.Fields{field.Any("any", "value")}
+	fields = fields.Append(field.String("string", "value"))
+
+	if len(fields) != 2 {
+		t.Fatalf("require 2 field got %v", len(fields))
+	}
+}

field/key.go

@@ -6,122 +6,124 @@ import (
 
 type Key string
 
-//nolint: gocyclo, funlen
+//nolint:funlen,cyclop,gocyclo
 func (k Key) Any(value interface{}) Field {
-	switch v := value.(type) {
+	switch val := value.(type) {
 	case string:
-		return k.String(v)
+		return k.String(val)
 	case *string:
-		return k.Stringp(v)
+		return k.Stringp(val)
 	case []string:
-		return k.Strings(v...)
+		return k.Strings(val...)
 	case bool:
-		return k.Bool(v)
+		return k.Bool(val)
 	case *bool:
-		return k.Boolp(v)
+		return k.Boolp(val)
 	case []bool:
-		return k.Bools(v...)
+		return k.Bools(val...)
 	case int8:
-		return k.Int8(v)
+		return k.Int8(val)
 	case []int8:
-		return k.Int8s(v...)
+		return k.Int8s(val...)
 	case *int8:
-		return k.Int8p(v)
+		return k.Int8p(val)
 	case int16:
-		return k.Int16(v)
+		return k.Int16(val)
 	case []int16:
-		return k.Int16s(v...)
+		return k.Int16s(val...)
 	case *int16:
-		return k.Int16p(v)
+		return k.Int16p(val)
 	case int32:
-		return k.Int32(v)
+		return k.Int32(val)
 	case []int32:
-		return k.Int32s(v...)
+		return k.Int32s(val...)
 	case *int32:
-		return k.Int32p(v)
+		return k.Int32p(val)
 	case int64:
-		return k.Int64(v)
+		return k.Int64(val)
 	case []int64:
-		return k.Int64s(v...)
+		return k.Int64s(val...)
 	case *int64:
-		return k.Int64p(v)
+		return k.Int64p(val)
 	case uint:
-		return k.Uint(v)
+		return k.Uint(val)
 	case []uint:
-		return k.Uints(v...)
+		return k.Uints(val...)
 	case *uint:
-		return k.Uintp(v)
+		return k.Uintp(val)
 	case uint8:
-		return k.Uint8(v)
+		return k.Uint8(val)
 	case *uint8:
-		return k.Uint8p(v)
+		return k.Uint8p(val)
 	case uint16:
-		return k.Uint16(v)
+		return k.Uint16(val)
 	case []uint16:
-		return k.Uint16s(v...)
+		return k.Uint16s(val...)
 	case *uint16:
-		return k.Uint16p(v)
+		return k.Uint16p(val)
 	case uint32:
-		return k.Uint32(v)
+		return k.Uint32(val)
 	case []uint32:
-		return k.Uint32s(v...)
+		return k.Uint32s(val...)
 	case *uint32:
-		return k.Uint32p(v)
+		return k.Uint32p(val)
 	case uint64:
-		return k.Uint64(v)
+		return k.Uint64(val)
 	case []uint64:
-		return k.Uint64s(v...)
+		return k.Uint64s(val...)
 	case *uint64:
-		return k.Uint64p(v)
+		return k.Uint64p(val)
 	case float32:
-		return k.Float32(v)
+		return k.Float32(val)
 	case []float32:
-		return k.Float32s(v...)
+		return k.Float32s(val...)
 	case *float32:
-		return k.Float32p(v)
+		return k.Float32p(val)
 	case float64:
-		return k.Float64(v)
+		return k.Float64(val)
 	case []float64:
-		return k.Float64s(v...)
+		return k.Float64s(val...)
 	case *float64:
-		return k.Float64p(v)
+		return k.Float64p(val)
 	case complex64:
-		return k.Complex64(v)
+		return k.Complex64(val)
 	case []complex64:
-		return k.Complex64s(v...)
+		return k.Complex64s(val...)
 	case *complex64:
-		return k.Complex64p(v)
+		return k.Complex64p(val)
 	case uintptr:
-		return k.Uintptr(v)
+		return k.Uintptr(val)
 	case []uintptr:
-		return k.Uintptrs(v...)
+		return k.Uintptrs(val...)
 	case *uintptr:
-		return k.Uintptrp(v)
+		return k.Uintptrp(val)
 	case []byte:
-		return k.Bytes(v)
+		return k.Bytes(val)
 	case time.Duration:
-		return k.Dureation(v)
+		return k.Dureation(val)
 	case []time.Duration:
-		return k.Dureations(v)
+		return k.Dureations(val)
 	case *time.Duration:
-		return k.Dureationp(v)
+		return k.Dureationp(val)
 	case time.Time:
-		return k.Time(v)
+		return k.Time(val)
 	case []time.Time:
-		return k.Times(v...)
+		return k.Times(val...)
 	case *time.Time:
-		return k.Timep(v)
+		return k.Timep(val)
 	case error:
-		return k.Error(v)
+		return k.Error(val)
 	case []error:
-		return k.Errors(v...)
+		return k.Errors(val...)
 	}
 
 	return Field{
 		key: k,
 		value: Value{
-			value: value,
+			value:    value,
-			vtype: TypeAny,
+			vtype:    TypeAny,
+			numeric:  0,
+			stringly: "",
 		},
 	}
 }

field/value.go

@@ -16,10 +16,15 @@ type Value struct {
 }
 
 func (v Value) MarshalJSON() ([]byte, error) {
-	return json.Marshal(v.AsInterface())
+	b, err := json.Marshal(v.AsInterface())
+	if err != nil {
+		return nil, fmt.Errorf("marshal err: %w", err)
+	}
+
+	return b, nil
 }
 
-//nolint: gocyclo
+//nolint:gocyclo,gomnd,cyclop
 func (v Value) String() string {
 	switch {
 	case v.vtype.IsArray(), v.vtype.IsAny():
@@ -57,7 +62,7 @@ func (v Value) String() string {
 	return fmt.Sprintf("%+v", v.AsInterface())
 }
 
-//nolint: gocyclo
+//nolint:gocyclo,cyclop
 func (v Value) AsInterface() interface{} {
 	switch {
 	case v.vtype.IsArray():
@@ -260,48 +265,71 @@ func (v Value) asFloat64() float64 {
 }
 
 func (v Value) asComplex64() complex64 {
-	return v.value.(complex64)
+	cmplex, _ := v.value.(complex64)
+
+	return cmplex
 }
 
 func (v Value) asComplex128() complex128 {
-	return v.value.(complex128)
+	cmplex, _ := v.value.(complex128)
+
+	return cmplex
 }
 
 func (v Value) asUintptr() uintptr {
-	return v.value.(uintptr)
+	val, _ := v.value.(uintptr)
+
+	return val
 }
 
 func (v Value) asBinary() []byte {
-	return v.value.([]byte)
+	bytes, _ := v.value.([]byte)
+
+	return bytes
 }
 
 func (v Value) asDuration() time.Duration {
-	return v.value.(time.Duration)
+	duration, _ := v.value.(time.Duration)
+
+	return duration
 }
 
 func (v Value) asTime() time.Time {
-	return v.value.(time.Time)
+	value, _ := v.value.(time.Time)
+
+	return value
 }
 
 func (v Value) asError() error {
-	return v.value.(error)
+	err, _ := v.value.(error)
+
+	return err
 }
 
 func nilValue(t Type) Value {
-	return Value{vtype: t | TypeNil}
+	return Value{
+		vtype:    t | TypeNil,
+		value:    nil,
+		numeric:  0,
+		stringly: "",
+	}
 }
 
 func stringValue(v string) Value {
 	return Value{
 		stringly: v,
 		vtype:    TypeString,
+		numeric:  0,
+		value:    nil,
 	}
 }
 
 func stringsValue(v []string) Value {
 	return Value{
-		value: v,
+		value:    v,
-		vtype: TypeString | TypeArray,
+		vtype:    TypeString | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -316,20 +344,27 @@ func stringpValue(v *string) Value {
 func boolValue(b bool) Value {
 	if b {
 		return Value{
-			numeric: 1,
+			numeric:  1,
-			vtype:   TypeBool,
+			vtype:    TypeBool,
+			value:    nil,
+			stringly: "",
 		}
 	}
 
 	return Value{
-		vtype: TypeBool,
+		vtype:    TypeBool,
+		value:    nil,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
 func boolsValue(b []bool) Value {
 	return Value{
-		value: b,
+		value:    b,
-		vtype: TypeBool | TypeArray,
+		vtype:    TypeBool | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -343,15 +378,19 @@ func boolpValue(b *bool) Value {
 
 func intValue(i int) Value {
 	return Value{
-		vtype:   TypeInt,
+		vtype:    TypeInt,
-		numeric: uint64(i),
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func intsValue(i []int) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeInt | TypeArray,
+		vtype:    TypeInt | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -365,15 +404,19 @@ func intpValue(in *int) Value {
 
 func int8Value(i int8) Value {
 	return Value{
-		vtype:   TypeInt8,
+		vtype:    TypeInt8,
-		numeric: uint64(i),
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func int8sValue(i []int8) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeInt8 | TypeArray,
+		vtype:    TypeInt8 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -387,15 +430,19 @@ func int8pValue(in *int8) Value {
 
 func int16Value(i int16) Value {
 	return Value{
-		vtype:   TypeInt16,
+		vtype:    TypeInt16,
-		numeric: uint64(i),
+		numeric:  uint64(i),
+		value:    0,
+		stringly: "",
 	}
 }
 
 func int16sValue(i []int16) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeInt16 | TypeArray,
+		vtype:    TypeInt16 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -409,15 +456,19 @@ func int16pValue(in *int16) Value {
 
 func int32Value(i int32) Value {
 	return Value{
-		vtype:   TypeInt32,
+		vtype:    TypeInt32,
-		numeric: uint64(i),
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func int32sValue(i []int32) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeInt32 | TypeArray,
+		vtype:    TypeInt32 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -431,15 +482,19 @@ func int32pValue(in *int32) Value {
 
 func int64Value(i int64) Value {
 	return Value{
-		vtype:   TypeInt64,
+		vtype:    TypeInt64,
-		numeric: uint64(i),
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func int64sValue(i []int64) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeInt64 | TypeArray,
+		vtype:    TypeInt64 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -453,15 +508,19 @@ func int64pValue(in *int64) Value {
 
 func uintValue(i uint) Value {
 	return Value{
-		vtype:   TypeUint,
+		vtype:    TypeUint,
-		numeric: uint64(i),
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func uintsValue(i []uint) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeUint | TypeArray,
+		vtype:    TypeUint | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -475,15 +534,19 @@ func uintpValue(in *uint) Value {
 
 func uint8Value(i uint8) Value {
 	return Value{
-		vtype:   TypeUint8,
+		vtype:    TypeUint8,
-		numeric: uint64(i),
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func uint8sValue(i []uint8) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeUint8 | TypeArray,
+		vtype:    TypeUint8 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -497,15 +560,19 @@ func uint8pValue(in *uint8) Value {
 
 func uint16Value(i uint16) Value {
 	return Value{
-		vtype:   TypeUint16,
+		vtype:    TypeUint16,
-		numeric: uint64(i),
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func uint16sValue(i []uint16) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeUint16 | TypeArray,
+		vtype:    TypeUint16 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -519,15 +586,19 @@ func uint16pValue(in *uint16) Value {
 
 func uint32Value(i uint32) Value {
 	return Value{
-		vtype:   TypeUint32,
+		vtype:    TypeUint32,
-		numeric: uint64(i),
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func uint32sValue(i []uint32) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeUint32 | TypeArray,
+		vtype:    TypeUint32 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -541,15 +612,19 @@ func uint32pValue(in *uint32) Value {
 
 func uint64Value(i uint64) Value {
 	return Value{
-		vtype:   TypeUint64,
+		vtype:    TypeUint64,
-		numeric: i,
+		numeric:  i,
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func uint64sValue(i []uint64) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeUint64 | TypeArray,
+		vtype:    TypeUint64 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -563,15 +638,19 @@ func uint64pValue(in *uint64) Value {
 
 func float32Value(i float32) Value {
 	return Value{
-		vtype:   TypeFloat32,
+		vtype:    TypeFloat32,
-		numeric: uint64(math.Float32bits(i)),
+		numeric:  uint64(math.Float32bits(i)),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func float32sValue(i []float32) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeFloat32 | TypeArray,
+		vtype:    TypeFloat32 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -585,15 +664,19 @@ func float32pValue(in *float32) Value {
 
 func float64Value(i float64) Value {
 	return Value{
-		vtype:   TypeFloat64,
+		vtype:    TypeFloat64,
-		numeric: math.Float64bits(i),
+		numeric:  math.Float64bits(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func float64sValue(i []float64) Value {
 	return Value{
-		value: i,
+		value:    i,
-		vtype: TypeFloat64 | TypeArray,
+		vtype:    TypeFloat64 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -607,15 +690,19 @@ func float64pValue(in *float64) Value {
 
 func complex64Value(in complex64) Value {
 	return Value{
-		vtype: TypeComplex64,
+		vtype:    TypeComplex64,
-		value: in,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
 func complex64sValue(in []complex64) Value {
 	return Value{
-		vtype: TypeComplex64 | TypeArray,
+		vtype:    TypeComplex64 | TypeArray,
-		value: in,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -629,15 +716,19 @@ func complex64pValue(in *complex64) Value {
 
 func complex128Value(in complex128) Value {
 	return Value{
-		vtype: TypeComplex64,
+		vtype:    TypeComplex64,
-		value: in,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
 func complex128sValue(in []complex128) Value {
 	return Value{
-		vtype: TypeComplex128 | TypeArray,
+		vtype:    TypeComplex128 | TypeArray,
-		value: in,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -651,15 +742,19 @@ func complex128pValue(in *complex128) Value {
 
 func uintptrValue(in uintptr) Value {
 	return Value{
-		vtype: TypeUintptr,
+		vtype:    TypeUintptr,
-		value: in,
+		numeric:  0,
+		stringly: "",
+		value:    in,
 	}
 }
 
 func uintptrsValue(in []uintptr) Value {
 	return Value{
-		vtype: TypeUintptr | TypeArray,
+		vtype:    TypeUintptr | TypeArray,
-		value: in,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -673,22 +768,28 @@ func uintptrpValue(in *uintptr) Value {
 
 func bytesValue(in []byte) Value {
 	return Value{
-		vtype: TypeBinary,
+		vtype:    TypeBinary,
-		value: in,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
 func durationValue(in time.Duration) Value {
 	return Value{
-		vtype: TypeDuration,
+		vtype:    TypeDuration,
-		value: in,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
 func durationsValue(in []time.Duration) Value {
 	return Value{
-		vtype: TypeDuration | TypeArray,
+		vtype:    TypeDuration | TypeArray,
-		value: in,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -717,6 +818,7 @@ func formatTimeValue(format string, in time.Time) Value {
 		vtype:    TypeTime,
 		value:    in,
 		stringly: format,
+		numeric:  0,
 	}
 }
 
@@ -725,6 +827,7 @@ func formatTimesValue(format string, in []time.Time) Value {
 		vtype:    TypeTime | TypeArray,
 		value:    in,
 		stringly: format,
+		numeric:  0,
 	}
 }
 
@@ -739,8 +842,10 @@ func formatTimepValue(format string, in *time.Time) Value {
 func errorValue(in error) Value {
 	if in != nil {
 		return Value{
-			vtype: TypeError,
+			vtype:    TypeError,
-			value: in,
+			value:    in,
+			numeric:  0,
+			stringly: "",
 		}
 	}
 
@@ -749,7 +854,9 @@ func errorValue(in error) Value {
 
 func errorsValue(in []error) Value {
 	return Value{
-		vtype: TypeError | TypeArray,
+		vtype:    TypeError | TypeArray,
-		value: in,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }

go.mod

@@ -1,10 +1,19 @@
 module gitoa.ru/go-4devs/log
 
-go 1.15
+go 1.17
 
 require (
-	github.com/sirupsen/logrus v1.7.0
+	github.com/sirupsen/logrus v1.8.1
-	go.opentelemetry.io/otel v0.13.0
+	go.opentelemetry.io/otel v1.9.0
-	go.opentelemetry.io/otel/sdk v0.13.0
+	go.opentelemetry.io/otel/sdk v1.9.0
-	go.uber.org/zap v1.16.0
+	go.opentelemetry.io/otel/trace v1.9.0
+	go.uber.org/zap v1.21.0
+)
+
+require (
+	github.com/go-logr/logr v1.2.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.6.0 // indirect
+	golang.org/x/sys v0.0.0-20210510120138-977fb7262007 // indirect
 )

go.sum

@@ -1,76 +1,77 @@
-github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
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-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
-github.com/DataDog/sketches-go v0.0.1/go.mod h1:Q5DbzQ+3AkgGwymQO7aZFNP7ns2lZKGtvRBzRXfdi60=
-github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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-github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
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 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007 h1:gG67DSER+11cZvqIMb8S8bt0vZtiN6xWYARwirrOSfE=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5 h1:hKsoRgsbwY1NafxrwTs+k64bikrLBkAgPir1TNCj3Zs=
-golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
-honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

handler/logrus/logger.go

@@ -9,82 +9,36 @@ import (
 	"gitoa.ru/go-4devs/log/level"
 )
 
-// Option configure logger.
+// Standard create new standart logrus handler.
-type Option func(*logger)
+func Standard() log.Logger {
-
+	return New(logrus.StandardLogger())
-// WithLevel sets callback level to log level.
-func WithLevel(level level.Level, c func(*logrus.Entry, string)) Option {
-	return func(l *logger) {
-		l.levels[level] = c
-	}
-}
-
-// WithLogrus sets logrus logger.
-func WithLogrus(logrus *logrus.Logger) Option {
-	return func(l *logger) {
-		l.logrus = logrus
-	}
 }
 
 // New create new logrus handler.
-func New(opts ...Option) log.Logger {
+func New(log *logrus.Logger) log.Logger {
-	log := logger{
+	return func(ctx context.Context, data *entry.Entry) (int, error) {
-		logrus: logrus.StandardLogger(),
+		lrgFields := make(logrus.Fields, data.Fields().Len())
-		levels: map[level.Level]func(*logrus.Entry, string){
+		for _, field := range data.Fields() {
-			level.Emergency: panicLog,
+			lrgFields[string(field.Key())] = field.AsInterface()
-			level.Alert:     fatalLog,
+		}
-			level.Critical:  errorLog,
+
-			level.Error:     errorLog,
+		entry := log.WithContext(ctx).WithFields(lrgFields)
-			level.Warning:   warnLog,
+
-			level.Notice:    infoLog,
+		switch data.Level() {
-			level.Info:      infoLog,
+		case level.Emergency:
-			level.Debug:     debugLog,
+			entry.Panic(data.Message())
-		},
+		case level.Alert:
+			entry.Fatal(data.Message())
+		case level.Critical, level.Error:
+			entry.Error(data.Message())
+		case level.Warning:
+			entry.Warn(data.Message())
+		case level.Notice, level.Info:
+			entry.Info(data.Message())
+		case level.Debug:
+			entry.Debug(data.Message())
+		}
+
+		return 0, nil
 	}
-
-	for _, o := range opts {
-		o(&log)
-	}
-
-	return log.log
-}
-
-type logger struct {
-	levels map[level.Level]func(l *logrus.Entry, msg string)
-	logrus *logrus.Logger
-}
-
-func (l *logger) log(ctx context.Context, e *entry.Entry) (int, error) {
-	lrgFields := make(logrus.Fields, e.Fields().Len())
-	for _, field := range e.Fields() {
-		lrgFields[string(field.Key())] = field.AsInterface()
-	}
-
-	l.levels[e.Level()](l.logrus.WithFields(lrgFields), e.Message())
-
-	return 0, nil
-}
-
-func panicLog(e *logrus.Entry, msg string) {
-	e.Panic(msg)
-}
-
-func fatalLog(e *logrus.Entry, msg string) {
-	e.Fatal(msg)
-}
-
-func errorLog(e *logrus.Entry, msg string) {
-	e.Error(msg)
-}
-
-func warnLog(e *logrus.Entry, msg string) {
-	e.Warn(msg)
-}
-
-func infoLog(e *logrus.Entry, msg string) {
-	e.Info(msg)
-}
-
-func debugLog(e *logrus.Entry, msg string) {
-	e.Debug(msg)
 }

handler/logrus/logger_test.go

@@ -13,6 +13,8 @@ import (
 )
 
 func TestNew(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 	buf := &bytes.Buffer{}
 
@@ -23,7 +25,7 @@ func TestNew(t *testing.T) {
 		DisableTimestamp: true,
 	})
 
-	handler := logrus.New(logrus.WithLogrus(lgrus))
+	handler := logrus.New(lgrus)
 	expect := "level=info msg=\"handle logrus message\"\n"
 
 	if _, err := handler(ctx, entry.New(entry.WithLevel(level.Info), entry.WithMessage("handle logrus message"))); err != nil {

handler/otel/helpers.go

@@ -5,8 +5,8 @@ import (
 
 	"gitoa.ru/go-4devs/log/entry"
 	"gitoa.ru/go-4devs/log/level"
-	"go.opentelemetry.io/otel/api/trace"
+	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/label"
+	"go.opentelemetry.io/otel/trace"
 )
 
 const (
@@ -38,19 +38,19 @@ func levels(lvl level.Level) Level {
 	return 0
 }
 
-func addEvent(ctx context.Context, e *entry.Entry) {
+func addEvent(ctx context.Context, data *entry.Entry) {
 	span := trace.SpanFromContext(ctx)
-	attrs := make([]label.KeyValue, 0, e.Fields().Len()+levelFields)
+	attrs := make([]attribute.KeyValue, 0, data.Fields().Len()+levelFields)
 
-	lvl := levels(e.Level())
+	lvl := levels(data.Level())
 	attrs = append(attrs,
-		label.String(fieldSeverityText, lvl.String()),
+		attribute.String(fieldSeverityText, lvl.String()),
-		label.Int(fieldSeverityNumber, int(lvl)),
+		attribute.Int(fieldSeverityNumber, int(lvl)),
 	)
 
-	for _, field := range e.Fields() {
+	for _, field := range data.Fields() {
-		attrs = append(attrs, label.String(string(field.Key()), field.Value().String()))
+		attrs = append(attrs, attribute.String(string(field.Key()), field.Value().String()))
 	}
 
-	span.AddEvent(ctx, e.Message(), attrs...)
+	span.AddEvent(data.Message(), trace.WithAttributes(attrs...))
 }

handler/zap/logger.go

@@ -9,87 +9,55 @@ import (
 	"go.uber.org/zap"
 )
 
-// Option configure logger.
+func Nop() log.Logger {
-type Option func(*logger)
+	return New(zap.NewNop())
-
-// WithLevel sets level logged message.
-func WithLevel(level level.Level, f func(z *zap.Logger, msg string, fields ...zap.Field)) Option {
-	return func(l *logger) {
-		l.levels[level] = f
-	}
 }
 
-// WithZap sets zap logger.
+func Example(options ...zap.Option) log.Logger {
-func WithZap(z *zap.Logger) Option {
+	return New(zap.NewExample(options...))
-	return func(l *logger) {
-		l.zap = z
-	}
 }
 
-// New create handler by zap logger.
+func Production(options ...zap.Option) log.Logger {
-func New(opts ...Option) log.Logger {
+	z, err := zap.NewProduction(options...)
-	z, err := zap.NewDevelopment()
 	if err != nil {
 		panic(err)
 	}
 
-	log := logger{
+	return New(z)
-		zap: z,
+}
-		levels: map[level.Level]func(z *zap.Logger, msg string, fields ...zap.Field){
+
-			level.Emergency: fatalLog,
+func Development(options ...zap.Option) log.Logger {
-			level.Alert:     panicLog,
+	z, err := zap.NewDevelopment(options...)
-			level.Critical:  errorLog,
+	if err != nil {
-			level.Error:     errorLog,
+		panic(err)
-			level.Warning:   warnLog,
-			level.Notice:    infoLog,
-			level.Info:      infoLog,
-			level.Debug:     debugLog,
-		},
 	}
 
-	for _, opt := range opts {
+	return New(z)
-		opt(&log)
+}
+
+// New create handler by zap logger.
+func New(logger *zap.Logger) log.Logger {
+	return func(ctx context.Context, data *entry.Entry) (int, error) {
+		zf := make([]zap.Field, data.Fields().Len())
+		for i, field := range data.Fields() {
+			zf[i] = zap.Any(string(field.Key()), field.AsInterface())
+		}
+
+		switch data.Level() {
+		case level.Emergency:
+			logger.Fatal(data.Message(), zf...)
+		case level.Alert:
+			logger.Panic(data.Message(), zf...)
+		case level.Critical, level.Error:
+			logger.Error(data.Message(), zf...)
+		case level.Warning:
+			logger.Warn(data.Message(), zf...)
+		case level.Notice, level.Info:
+			logger.Info(data.Message(), zf...)
+		case level.Debug:
+			logger.Debug(data.Message(), zf...)
+		}
+
+		return 0, nil
 	}
-
-	return log.log
-}
-
-type logger struct {
-	zap    *zap.Logger
-	levels map[level.Level]func(z *zap.Logger, msg string, fields ...zap.Field)
-}
-
-func (l *logger) log(ctx context.Context, e *entry.Entry) (int, error) {
-	zf := make([]zap.Field, e.Fields().Len())
-	for i, field := range e.Fields() {
-		zf[i] = zap.Any(string(field.Key()), field.AsInterface())
-	}
-
-	l.levels[e.Level()](l.zap, e.Message(), zf...)
-
-	return 0, nil
-}
-
-func panicLog(z *zap.Logger, msg string, fields ...zap.Field) {
-	z.Panic(msg, fields...)
-}
-
-func fatalLog(z *zap.Logger, msg string, fields ...zap.Field) {
-	z.Fatal(msg, fields...)
-}
-
-func errorLog(z *zap.Logger, msg string, fields ...zap.Field) {
-	z.Error(msg, fields...)
-}
-
-func warnLog(z *zap.Logger, msg string, fields ...zap.Field) {
-	z.Warn(msg, fields...)
-}
-
-func infoLog(z *zap.Logger, msg string, fields ...zap.Field) {
-	z.Info(msg, fields...)
-}
-
-func debugLog(z *zap.Logger, msg string, fields ...zap.Field) {
-	z.Debug(msg, fields...)
 }

handler/zap/logger_test.go

@@ -14,6 +14,8 @@ import (
 )
 
 func TestNew(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 	buf := &bytes.Buffer{}
 	core := zapcore.NewCore(zapcore.NewJSONEncoder(zapcore.EncoderConfig{
@@ -24,7 +26,7 @@ func TestNew(t *testing.T) {
 		EncodeTime:     zapcore.ISO8601TimeEncoder,
 		EncodeDuration: zapcore.StringDurationEncoder,
 	}), zapcore.AddSync(buf), zapcore.DebugLevel)
-	logger := zlog.New(zlog.WithZap(zap.New(core)))
+	logger := zlog.New(zap.New(core))
 	expect := `{"level":"info","msg":"handle zap message","env":"test"}` + "\n"
 
 	if _, err := logger(ctx, entry.New(

level/level.go

@@ -2,6 +2,7 @@ package level
 
 import (
 	"encoding/json"
+	"fmt"
 	"strings"
 )
 
@@ -28,7 +29,12 @@ const (
 )
 
 func (l Level) MarshalJSON() ([]byte, error) {
-	return json.Marshal(l.String())
+	b, err := json.Marshal(l.String())
+	if err != nil {
+		return nil, fmt.Errorf("marshal err: %w", err)
+	}
+
+	return b, nil
 }
 
 func (l Level) Is(level Level) bool {
@@ -42,7 +48,7 @@ func (l Level) Enabled(level Level) bool {
 func (l *Level) UnmarshalJSON(in []byte) error {
 	var v string
 	if err := json.Unmarshal(in, &v); err != nil {
-		return err
+		return fmt.Errorf("unmarshal err: %w", err)
 	}
 
 	lvl := Parse(v)

logger.go

@@ -28,56 +28,46 @@ func writeOutput(_ int, err error) {
 // Logger logged message.
 type Logger func(ctx context.Context, entry *entry.Entry) (int, error)
 
-func (l Logger) log(ctx context.Context, level level.Level, args ...interface{}) {
-	writeOutput(l.write(ctx, level, fmt.Sprint(args...)))
-}
-
 func (l Logger) Write(in []byte) (int, error) {
 	return l.write(context.Background(), level.Info, string(in))
 }
 
 func (l Logger) write(ctx context.Context, level level.Level, msg string, fields ...field.Field) (int, error) {
-	e := entry.Get()
+	data := entry.Get()
 
 	defer func() {
-		entry.Put(e)
+		entry.Put(data)
 	}()
 
-	return l(ctx, e.SetLevel(level).SetMessage(msg).Add(fields...))
+	return l(ctx, data.SetLevel(level).SetMessage(msg).Add(fields...))
 }
 
-func (l Logger) logKVs(ctx context.Context, level level.Level, msg string, args ...interface{}) {
+func (l Logger) writef(ctx context.Context, level level.Level, format string, args ...interface{}) (int, error) {
-	writeOutput(l.write(ctx, level, msg, l.kv(ctx, args...)...))
+	data := entry.Get()
-}
 
-func (l Logger) logKV(ctx context.Context, level level.Level, msg string, fields ...field.Field) {
+	defer func() {
-	writeOutput(l.write(ctx, level, msg, fields...))
+		entry.Put(data)
-}
+	}()
 
-func (l Logger) logf(ctx context.Context, level level.Level, format string, args ...interface{}) {
+	return l(ctx, data.SetLevel(level).SetMessagef(format, args...))
-	writeOutput(l.write(ctx, level, fmt.Sprintf(format, args...)))
-}
-
-func (l Logger) logln(ctx context.Context, level level.Level, args ...interface{}) {
-	writeOutput(l.write(ctx, level, fmt.Sprintln(args...)))
 }
 
 func (l Logger) kv(ctx context.Context, args ...interface{}) field.Fields {
-	e := entry.Get()
+	kvEntry := entry.Get()
 
 	defer func() {
-		entry.Put(e)
+		entry.Put(kvEntry)
 	}()
 
 	for i := 0; i < len(args); i++ {
 		if f, ok := args[i].(field.Field); ok {
-			e = e.Add(f)
+			kvEntry = kvEntry.Add(f)
 
 			continue
 		}
 
 		if i == len(args)-1 {
-			l.logKV(ctx, level.Critical, fmt.Sprint("Ignored key without a value.", args[i]), e.Fields()...)
+			writeOutput(l.write(ctx, level.Critical, fmt.Sprint("Ignored key without a value.", args[i]), kvEntry.Fields()...))
 
 			break
 		}
@@ -86,15 +76,15 @@ func (l Logger) kv(ctx context.Context, args ...interface{}) field.Fields {
 
 		key, val := args[i-1], args[i]
 		if keyStr, ok := key.(string); ok {
-			e = e.AddAny(keyStr, val)
+			kvEntry = kvEntry.AddAny(keyStr, val)
 
 			continue
 		}
 
-		l.logKV(ctx, level.Critical, fmt.Sprint("Ignored key-value pairs with non-string keys.", key, val), e.Fields()...)
+		writeOutput(l.write(ctx, level.Critical, fmt.Sprint("Ignored key-value pairs with non-string keys.", key, val), kvEntry.Fields()...))
 	}
 
-	return e.Fields()
+	return kvEntry.Fields()
 }
 
 // With adds middlewares to logger.
@@ -104,207 +94,207 @@ func (l Logger) With(mw ...Middleware) Logger {
 
 // Emerg log by emergency level.
 func (l Logger) Emerg(ctx context.Context, args ...interface{}) {
-	l.log(ctx, level.Emergency, args...)
+	writeOutput(l.writef(ctx, level.Emergency, "", args...))
 }
 
 // Alert log by alert level.
 func (l Logger) Alert(ctx context.Context, args ...interface{}) {
-	l.log(ctx, level.Alert, args...)
+	writeOutput(l.writef(ctx, level.Alert, "", args...))
 }
 
 // Crit log by critical level.
 func (l Logger) Crit(ctx context.Context, args ...interface{}) {
-	l.log(ctx, level.Critical, args...)
+	writeOutput(l.writef(ctx, level.Critical, "", args...))
 }
 
 // Err log by error level.
 func (l Logger) Err(ctx context.Context, args ...interface{}) {
-	l.log(ctx, level.Error, args...)
+	writeOutput(l.writef(ctx, level.Error, "", args...))
 }
 
 // Warn log by warning level.
 func (l Logger) Warn(ctx context.Context, args ...interface{}) {
-	l.log(ctx, level.Warning, args...)
+	writeOutput(l.writef(ctx, level.Warning, "", args...))
 }
 
 // Notice log by notice level.
 func (l Logger) Notice(ctx context.Context, args ...interface{}) {
-	l.log(ctx, level.Notice, args...)
+	writeOutput(l.writef(ctx, level.Notice, "", args...))
 }
 
 // Info log by info level.
 func (l Logger) Info(ctx context.Context, args ...interface{}) {
-	l.log(ctx, level.Info, args...)
+	writeOutput(l.writef(ctx, level.Info, "", args...))
 }
 
 // Debug log by debug level.
 func (l Logger) Debug(ctx context.Context, args ...interface{}) {
-	l.log(ctx, level.Debug, args...)
+	writeOutput(l.writef(ctx, level.Debug, "", args...))
 }
 
 // Print log by info level and arguments.
 func (l Logger) Print(args ...interface{}) {
-	l.log(context.Background(), level.Info, args...)
+	writeOutput(l.writef(context.Background(), level.Info, "", args...))
 }
 
 // Fatal log by alert level and arguments.
 func (l Logger) Fatal(args ...interface{}) {
-	l.log(context.Background(), level.Alert, args...)
+	writeOutput(l.writef(context.Background(), level.Alert, "", args...))
 }
 
 // Panic log by emergency level and arguments.
 func (l Logger) Panic(args ...interface{}) {
-	l.log(context.Background(), level.Emergency, args...)
+	writeOutput(l.writef(context.Background(), level.Emergency, "", args...))
 }
 
 // Println log by info level and arguments.
 func (l Logger) Println(args ...interface{}) {
-	l.logln(context.Background(), level.Info, args...)
+	writeOutput(l.write(context.Background(), level.Info, fmt.Sprintln(args...)))
 }
 
 // Fatalln log by alert level and arguments.
 func (l Logger) Fatalln(args ...interface{}) {
-	l.logln(context.Background(), level.Alert, args...)
+	writeOutput(l.write(context.Background(), level.Alert, fmt.Sprintln(args...)))
 }
 
 // Panicln log by emergency level and arguments.
 func (l Logger) Panicln(args ...interface{}) {
-	l.logln(context.Background(), level.Emergency, args...)
+	writeOutput(l.write(context.Background(), level.Emergency, fmt.Sprintln(args...)))
 }
 
 // EmergKVs sugared log by emergency level and key-values.
 func (l Logger) EmergKVs(ctx context.Context, msg string, args ...interface{}) {
-	l.logKVs(ctx, level.Emergency, msg, args...)
+	writeOutput(l.write(ctx, level.Emergency, msg, l.kv(ctx, args...)...))
 }
 
 // AlertKVs sugared log by alert level and key-values.
 func (l Logger) AlertKVs(ctx context.Context, msg string, args ...interface{}) {
-	l.logKVs(ctx, level.Alert, msg, args...)
+	writeOutput(l.write(ctx, level.Alert, msg, l.kv(ctx, args...)...))
 }
 
 // CritKVs sugared log by critcal level and key-values.
 func (l Logger) CritKVs(ctx context.Context, msg string, args ...interface{}) {
-	l.logKVs(ctx, level.Critical, msg, args...)
+	writeOutput(l.write(ctx, level.Critical, msg, l.kv(ctx, args...)...))
 }
 
 // ErrKVs sugared log by error level and key-values.
 func (l Logger) ErrKVs(ctx context.Context, msg string, args ...interface{}) {
-	l.logKVs(ctx, level.Error, msg, args...)
+	writeOutput(l.write(ctx, level.Error, msg, l.kv(ctx, args...)...))
 }
 
 // WarnKVs sugared log by warning level and key-values.
 func (l Logger) WarnKVs(ctx context.Context, msg string, args ...interface{}) {
-	l.logKVs(ctx, level.Warning, msg, args...)
+	writeOutput(l.write(ctx, level.Warning, msg, l.kv(ctx, args...)...))
 }
 
 // NoticeKVs sugared log by notice level and key-values.
 func (l Logger) NoticeKVs(ctx context.Context, msg string, args ...interface{}) {
-	l.logKVs(ctx, level.Notice, msg, args...)
+	writeOutput(l.write(ctx, level.Notice, msg, l.kv(ctx, args...)...))
 }
 
 // InfoKVs sugared log by info level and key-values.
 func (l Logger) InfoKVs(ctx context.Context, msg string, args ...interface{}) {
-	l.logKVs(ctx, level.Info, msg, args...)
+	writeOutput(l.write(ctx, level.Info, msg, l.kv(ctx, args...)...))
 }
 
 // DebugKVs sugared log by debug level and key-values.
 func (l Logger) DebugKVs(ctx context.Context, msg string, args ...interface{}) {
-	l.logKVs(ctx, level.Debug, msg, args...)
+	writeOutput(l.write(ctx, level.Debug, msg, l.kv(ctx, args...)...))
 }
 
 // EmergKV log by emergency level and key-values.
 func (l Logger) EmergKV(ctx context.Context, msg string, args ...field.Field) {
-	l.logKV(ctx, level.Emergency, msg, args...)
+	writeOutput(l.write(ctx, level.Emergency, msg, args...))
 }
 
 // AlertKV log by alert level and key-values.
 func (l Logger) AlertKV(ctx context.Context, msg string, args ...field.Field) {
-	l.logKV(ctx, level.Alert, msg, args...)
+	writeOutput(l.write(ctx, level.Alert, msg, args...))
 }
 
 // CritKV log by critcal level and key-values.
 func (l Logger) CritKV(ctx context.Context, msg string, args ...field.Field) {
-	l.logKV(ctx, level.Critical, msg, args...)
+	writeOutput(l.write(ctx, level.Critical, msg, args...))
 }
 
 // ErrKV log by error level and key-values.
 func (l Logger) ErrKV(ctx context.Context, msg string, args ...field.Field) {
-	l.logKV(ctx, level.Error, msg, args...)
+	writeOutput(l.write(ctx, level.Error, msg, args...))
 }
 
 // WarnKV log by warning level and key-values.
 func (l Logger) WarnKV(ctx context.Context, msg string, args ...field.Field) {
-	l.logKV(ctx, level.Warning, msg, args...)
+	writeOutput(l.write(ctx, level.Warning, msg, args...))
 }
 
 // NoticeKV log by notice level and key-values.
 func (l Logger) NoticeKV(ctx context.Context, msg string, args ...field.Field) {
-	l.logKV(ctx, level.Notice, msg, args...)
+	writeOutput(l.write(ctx, level.Notice, msg, args...))
 }
 
 // InfoKV log by info level and key-values.
 func (l Logger) InfoKV(ctx context.Context, msg string, args ...field.Field) {
-	l.logKV(ctx, level.Info, msg, args...)
+	writeOutput(l.write(ctx, level.Info, msg, args...))
 }
 
 // DebugKV log by debug level and key-values.
 func (l Logger) DebugKV(ctx context.Context, msg string, args ...field.Field) {
-	l.logKV(ctx, level.Debug, msg, args...)
+	writeOutput(l.write(ctx, level.Debug, msg, args...))
 }
 
 // Emergf log by emergency level by format and arguments.
 func (l Logger) Emergf(ctx context.Context, format string, args ...interface{}) {
-	l.logf(ctx, level.Emergency, format, args...)
+	writeOutput(l.writef(ctx, level.Emergency, format, args...))
 }
 
 // Alertf log by alert level by format and arguments.
 func (l Logger) Alertf(ctx context.Context, format string, args ...interface{}) {
-	l.logf(ctx, level.Alert, format, args...)
+	writeOutput(l.writef(ctx, level.Alert, format, args...))
 }
 
 // Critf log by critical level by format and arguments.
 func (l Logger) Critf(ctx context.Context, format string, args ...interface{}) {
-	l.logf(ctx, level.Critical, format, args...)
+	writeOutput(l.writef(ctx, level.Critical, format, args...))
 }
 
 // Errf log by error level by format and arguments.
 func (l Logger) Errf(ctx context.Context, format string, args ...interface{}) {
-	l.logf(ctx, level.Error, format, args...)
+	writeOutput(l.writef(ctx, level.Error, format, args...))
 }
 
 // Warnf log by warning level by format and arguments.
 func (l Logger) Warnf(ctx context.Context, format string, args ...interface{}) {
-	l.logf(ctx, level.Warning, format, args...)
+	writeOutput(l.writef(ctx, level.Warning, format, args...))
 }
 
 // Noticef log by notice level by format and arguments.
 func (l Logger) Noticef(ctx context.Context, format string, args ...interface{}) {
-	l.logf(ctx, level.Notice, format, args...)
+	writeOutput(l.writef(ctx, level.Notice, format, args...))
 }
 
 // Infof log by info level by format and arguments.
 func (l Logger) Infof(ctx context.Context, format string, args ...interface{}) {
-	l.logf(ctx, level.Info, format, args...)
+	writeOutput(l.writef(ctx, level.Info, format, args...))
 }
 
 // Debugf log by debug level by format and arguments.
 func (l Logger) Debugf(ctx context.Context, format string, args ...interface{}) {
-	l.logf(ctx, level.Debug, format, args...)
+	writeOutput(l.writef(ctx, level.Debug, format, args...))
 }
 
 // Printf log by info level by format and arguments without context.
 func (l Logger) Printf(format string, args ...interface{}) {
-	l.logf(context.Background(), level.Info, format, args...)
+	writeOutput(l.writef(context.Background(), level.Info, format, args...))
 }
 
 // Fatalf log by alert level by format and arguments without context.
 func (l Logger) Fatalf(format string, args ...interface{}) {
-	l.logf(context.Background(), level.Alert, format, args...)
+	writeOutput(l.writef(context.Background(), level.Alert, format, args...))
 }
 
 // Panicf log by emergency level and arguments without context.
 func (l Logger) Panicf(format string, args ...interface{}) {
-	l.logf(context.Background(), level.Emergency, format, args...)
+	writeOutput(l.writef(context.Background(), level.Emergency, format, args...))
 }
 
 func (l Logger) Writer(ctx context.Context, level level.Level, fields ...field.Field) io.Writer {
@@ -316,6 +306,7 @@ func (l Logger) Writer(ctx context.Context, level level.Level, fields ...field.F
 	}
 }
 
+//nolint:containedctx
 type writer struct {
 	ctx    context.Context
 	level  level.Level
@@ -323,6 +314,33 @@ type writer struct {
 	Logger
 }
 
+func (w writer) WithLevel(level level.Level) writer {
+	return writer{
+		level:  level,
+		Logger: w.Logger,
+		ctx:    w.ctx,
+		fields: w.fields,
+	}
+}
+
+func (w writer) WithContext(ctx context.Context) writer {
+	return writer{
+		level:  w.level,
+		Logger: w.Logger,
+		ctx:    ctx,
+		fields: w.fields,
+	}
+}
+
+func (w writer) WithFields(fields ...field.Field) writer {
+	return writer{
+		level:  w.level,
+		Logger: w.Logger,
+		ctx:    w.ctx,
+		fields: fields,
+	}
+}
+
 func (w writer) Write(in []byte) (int, error) {
 	return w.write(w.ctx, w.level, string(in), w.fields...)
 }

logger_example_caller_test.go

@@ -13,8 +13,10 @@ func ExampleNew_withCaller() {
 	)
 	logger.Err(ctx, "same error message")
 	logger.InfoKVs(ctx, "same info message", "api-version", 0.1)
+	_, _ = logger.Write([]byte("same write message"))
 
 	// Output:
 	// msg="same error message" level=error caller=logger_example_caller_test.go:14
 	// msg="same info message" api-version=0.1 level=info caller=logger_example_caller_test.go:15
+	// msg="same write message" level=info caller=logger_example_caller_test.go:16
 }

logger_example_logrus_test.go

@@ -2,20 +2,27 @@ package log_test
 
 import (
 	"io"
+	"os"
 
+	slogrus "github.com/sirupsen/logrus"
 	"gitoa.ru/go-4devs/log/field"
-	"gitoa.ru/go-4devs/log/handler/zap"
+	"gitoa.ru/go-4devs/log/handler/logrus"
-	uzap "go.uber.org/zap"
 )
 
-func ExampleNew_zapHandler() {
+func ExampleNew_logrusHandler() {
-	log := zap.New(zap.WithZap(uzap.NewExample()))
+	lgrs := slogrus.New()
-	log.Err(ctx, "log zap")
+	lgrs.SetOutput(os.Stdout)
-	log.ErrKV(ctx, "log zap kv", field.Int("int", 42))
+	lgrs.SetFormatter(&slogrus.TextFormatter{
-	log.ErrKVs(ctx, "log zap kv sugar", "err", io.EOF)
+		DisableTimestamp: true,
+	})
+
+	log := logrus.New(lgrs)
+	log.Err(ctx, "log logrus")
+	log.ErrKV(ctx, "log logrus kv", field.Int("int", 42))
+	log.ErrKVs(ctx, "log logrus kv sugar", "err", io.EOF)
 
 	// Output:
-	// {"level":"error","msg":"log zap"}
+	// level=error msg="log logrus"
-	// {"level":"error","msg":"log zap kv","int":42}
+	// level=error msg="log logrus kv" int=42
-	// {"level":"error","msg":"log zap kv sugar","err":"EOF"}
+	// level=error msg="log logrus kv sugar" err=EOF
 }

logger_example_test.go

@@ -52,13 +52,16 @@ func ExampleNew_debugKV() {
 
 func ExampleNew_level() {
 	logger := log.New(log.WithStdout()).With(log.WithLevel("level", level.Error))
-	logger.Info(ctx, "same message")
-	// Output:
-
 	logger.Err(ctx, "same error message")
 	// Output: msg="same error message" level=error
 }
 
+func ExampleNew_level_info() {
+	logger := log.New(log.WithStdout()).With(log.WithLevel("level", level.Error))
+	logger.Info(ctx, "same message")
+	// Output:
+}
+
 func ExampleNew_jsonFormat() {
 	logger := log.New(log.WithStdout(), log.WithJSONFormat()).
 		With(
@@ -66,7 +69,7 @@ func ExampleNew_jsonFormat() {
 			log.GoVersion("go-version"),
 		)
 	logger.Err(ctx, "same error message")
-	// Output: {"go-version":"go1.15.2","level":"error","msg":"same error message"}
+	// Output: {"go-version":"go1.18.1","level":"error","msg":"same error message"}
 }
 
 func ExampleNew_textEncoding() {
@@ -79,8 +82,8 @@ func ExampleNew_textEncoding() {
 	logger.InfoKVs(ctx, "same info message", "api-version", 0.1)
 
 	// Output:
-	// msg="same error message" level=error go-version=go1.15.2
+	// msg="same error message" level=error go-version=go1.18.1
-	// msg="same info message" api-version=0.1 level=info go-version=go1.15.2
+	// msg="same info message" api-version=0.1 level=info go-version=go1.18.1
 }
 
 type ctxKey string
@@ -102,7 +105,7 @@ func ExampleWith() {
 		levelInfo, log.WithContextValue(requestID), log.KeyValue("api", "0.1.0"), log.GoVersion("go"),
 	)
 	logger.Info(vctx, "same message")
-	// Output: msg="same message" level=info requestID=6a5fa048-7181-11ea-bc55-0242ac130003 api=0.1.0 go=go1.15.2
+	// Output: msg="same message" level=info requestID=6a5fa048-7181-11ea-bc55-0242ac130003 api=0.1.0 go=go1.18.1
 }
 
 func ExampleLogger_Print() {
@@ -111,7 +114,7 @@ func ExampleLogger_Print() {
 		levelInfo, log.KeyValue("client", "http"), log.KeyValue("api", "0.1.0"), log.GoVersion("go"),
 	)
 	logger.Print("same message")
-	// Output: msg="same message" level=info client=http api=0.1.0 go=go1.15.2
+	// Output: msg="same message" level=info client=http api=0.1.0 go=go1.18.1
 }
 
 func ExamplePrint() {

logger_example_trace_test.go

@@ -8,9 +8,8 @@ import (
 	"gitoa.ru/go-4devs/log"
 	"gitoa.ru/go-4devs/log/field"
 	"gitoa.ru/go-4devs/log/handler/otel"
-	apitrace "go.opentelemetry.io/otel/api/trace"
-	"go.opentelemetry.io/otel/sdk/export/trace"
 	sdktrace "go.opentelemetry.io/otel/sdk/trace"
+	"go.opentelemetry.io/otel/trace"
 )
 
 func ExampleNew_withTrace() {
@@ -33,7 +32,7 @@ func ExampleNew_withTrace() {
 	// event: log logrus kv sugar, SeverityText = ERROR, SeverityNumber = 17, err = EOF
 }
 
-func startSpan(ctx context.Context) (context.Context, apitrace.Span) {
+func startSpan(ctx context.Context) (context.Context, trace.Span) {
 	tp := sdktrace.NewTracerProvider(sdktrace.WithSyncer(exporter{}))
 
 	return tp.Tracer("logger").Start(ctx, "operation")
@@ -45,9 +44,9 @@ func (e exporter) Shutdown(_ context.Context) error {
 	return nil
 }
 
-func (e exporter) ExportSpans(ctx context.Context, spanData []*trace.SpanData) error {
+func (e exporter) ExportSpans(ctx context.Context, spanData []sdktrace.ReadOnlySpan) error {
 	for _, data := range spanData {
-		for _, events := range data.MessageEvents {
+		for _, events := range data.Events() {
 			fmt.Print("event: ", events.Name)
 
 			for _, attr := range events.Attributes {

logger_example_zap_test.go

@@ -2,27 +2,20 @@ package log_test
 
 import (
 	"io"
-	"os"
 
-	slogrus "github.com/sirupsen/logrus"
 	"gitoa.ru/go-4devs/log/field"
-	"gitoa.ru/go-4devs/log/handler/logrus"
+	"gitoa.ru/go-4devs/log/handler/zap"
+	uzap "go.uber.org/zap"
 )
 
-func ExampleNew_logrusHandler() {
+func ExampleNew_zapHandler() {
-	lgrs := slogrus.New()
+	log := zap.New(uzap.NewExample())
-	lgrs.SetOutput(os.Stdout)
+	log.Err(ctx, "log zap")
-	lgrs.SetFormatter(&slogrus.TextFormatter{
+	log.ErrKV(ctx, "log zap kv", field.Int("int", 42))
-		DisableTimestamp: true,
+	log.ErrKVs(ctx, "log zap kv sugar", "err", io.EOF)
-	})
-
-	log := logrus.New(logrus.WithLogrus(lgrs))
-	log.Err(ctx, "log logrus")
-	log.ErrKV(ctx, "log logrus kv", field.Int("int", 42))
-	log.ErrKVs(ctx, "log logrus kv sugar", "err", io.EOF)
 
 	// Output:
-	// level=error msg="log logrus"
+	// {"level":"error","msg":"log zap"}
-	// level=error msg="log logrus kv" int=42
+	// {"level":"error","msg":"log zap kv","int":42}
-	// level=error msg="log logrus kv sugar" err=EOF
+	// {"level":"error","msg":"log zap kv sugar","err":"EOF"}
 }

logger_test.go

@@ -17,6 +17,8 @@ import (
 var requestID ctxKey = "requestID"
 
 func TestFields(t *testing.T) {
+	t.Parallel()
+
 	type rObj struct {
 		id string
 	}
@@ -58,6 +60,8 @@ func TestFields(t *testing.T) {
 }
 
 func TestWriter(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 
 	success := "msg=\"info message\" err=file already exists requestID=6a5fa048-7181-11ea-bc55-0242ac1311113 level=info\n"
@@ -84,6 +88,8 @@ func TestWriter(t *testing.T) {
 }
 
 func TestLogger(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 	buf := &bytes.Buffer{}
 	logger := log.New(log.WithWriter(buf)).With(log.WithContextValue(requestID), log.WithLevel("level", level.Info))

middleware.go

@@ -30,7 +30,7 @@ func With(logger Logger, mw ...Middleware) Logger {
 
 	lastI := len(mw) - 1
 
-	return func(ctx context.Context, e *entry.Entry) (int, error) {
+	return func(ctx context.Context, data *entry.Entry) (int, error) {
 		var (
 			chainHandler func(context.Context, *entry.Entry) (int, error)
 			curI         int
@@ -47,7 +47,7 @@ func With(logger Logger, mw ...Middleware) Logger {
 			return n, err
 		}
 
-		return mw[0](ctx, e, chainHandler)
+		return mw[0](ctx, data, chainHandler)
 	}
 }
 
@@ -62,16 +62,16 @@ func WithLevel(key string, lvl level.Level) Middleware {
 	}
 }
 
-func WithClosure(ctx context.Context, e *entry.Entry, handler Logger) (int, error) {
+func WithClosure(ctx context.Context, data *entry.Entry, handler Logger) (int, error) {
-	for i, field := range e.Fields() {
+	for i, field := range data.Fields() {
 		if field.Type().IsAny() {
 			if f, ok := field.AsInterface().(func() string); ok {
-				e.Fields().Set(i, field.Key().String(f()))
+				data.Fields().Set(i, field.Key().String(f()))
 			}
 		}
 	}
 
-	return handler(ctx, e)
+	return handler(ctx, data)
 }
 
 // KeyValue add field by const key value.

writter.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"fmt"
 	"io"
 	"os"
 	"strings"
@@ -14,19 +15,24 @@ import (
 
 // New creates standart logger.
 func New(opts ...Option) Logger {
-	l := log{e: stringFormat(), w: os.Stderr}
+	logger := log{e: stringFormat(), w: os.Stderr}
 
 	for _, opt := range opts {
-		opt(&l)
+		opt(&logger)
 	}
 
 	return func(_ context.Context, entry *entry.Entry) (int, error) {
-		b, err := l.e(entry)
+		b, err := logger.e(entry)
 		if err != nil {
-			return 0, err
+			return 0, fmt.Errorf("enode err: %w", err)
 		}
 
-		return l.w.Write(b)
+		n, err := logger.w.Write(b)
+		if err != nil {
+			return 0, fmt.Errorf("failed write: %w", err)
+		}
+
+		return n, nil
 	}
 }
 
@@ -50,9 +56,7 @@ func WithWriter(writer io.Writer) Option {
 
 // WithStdout sets logged to os.Stdout.
 func WithStdout() Option {
-	return func(l *log) {
+	return WithWriter(os.Stdout)
-		l.w = os.Stdout
-	}
 }
 
 // WithEncode sets format log.
@@ -64,18 +68,15 @@ func WithEncode(e Encode) Option {
 
 // WithStringFormat sets format as simple string.
 func WithStringFormat() Option {
-	return func(l *log) {
+	return WithEncode(stringFormat())
-		l.e = stringFormat()
-	}
 }
 
 // WithJSONFormat sets json output format.
 func WithJSONFormat() Option {
-	return func(l *log) {
+	return WithEncode(jsonFormat)
-		l.e = jsonFormat
-	}
 }
 
+//nolint:forcetypeassert
 func stringFormat() func(entry *entry.Entry) ([]byte, error) {
 	pool := sync.Pool{
 		New: func() interface{} {
@@ -84,34 +85,34 @@ func stringFormat() func(entry *entry.Entry) ([]byte, error) {
 	}
 
 	return func(entry *entry.Entry) ([]byte, error) {
-		b := pool.Get().(*bytes.Buffer)
+		buf := pool.Get().(*bytes.Buffer)
-		b.Reset()
+		buf.Reset()
 
 		defer func() {
-			pool.Put(b)
+			pool.Put(buf)
 		}()
 
-		b.WriteString("msg=\"")
+		buf.WriteString("msg=\"")
-		b.WriteString(strings.TrimSpace(entry.Message()))
+		buf.WriteString(strings.TrimSpace(entry.Message()))
-		b.WriteString("\"")
+		buf.WriteString("\"")
 
 		for _, field := range entry.Fields() {
-			b.WriteString(" ")
+			buf.WriteString(" ")
-			b.WriteString(string(field.Key()))
+			buf.WriteString(string(field.Key()))
-			b.WriteString("=")
+			buf.WriteString("=")
-			b.WriteString(field.Value().String())
+			buf.WriteString(field.Value().String())
 		}
 
-		b.WriteString("\n")
+		buf.WriteString("\n")
 
-		return b.Bytes(), nil
+		return buf.Bytes(), nil
 	}
 }
 
 func jsonFormat(entry *entry.Entry) ([]byte, error) {
 	res, err := json.Marshal(entry.AddString("msg", entry.Message()).Fields().AsMap())
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("marshal err: %w", err)
 	}
 
 	return append(res, []byte("\n")...), nil