[#521] *: use stdlib errors package

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

pkg/util/locode/db/airports/calls.go

@@ -2,13 +2,14 @@ package airportsdb
 
 import (
 	"encoding/csv"
+	"errors"
+	"fmt"
 	"io"
 	"os"
 	"strconv"
 
 	"github.com/nspcc-dev/neofs-node/pkg/util/locode"
 	locodedb "github.com/nspcc-dev/neofs-node/pkg/util/locode/db"
-	"github.com/pkg/errors"
 )
 
 const (
@@ -177,7 +178,7 @@ func (db *DB) scanWords(pm pathMode, num int, wordsHandler func([]string) error)
 
 			return err
 		} else if ln := len(words); ln != num {
-			return errors.Errorf("unexpected number of words %d", ln)
+			return fmt.Errorf("unexpected number of words %d", ln)
 		}
 
 		if err := wordsHandler(words); err != nil {

pkg/util/locode/db/boltdb/calls.go

@@ -2,11 +2,12 @@ package locodebolt
 
 import (
 	"encoding/json"
+	"errors"
+	"fmt"
 	"os"
 	"path"
 
 	locodedb "github.com/nspcc-dev/neofs-node/pkg/util/locode/db"
-	"github.com/pkg/errors"
 	"go.etcd.io/bbolt"
 )
 
@@ -21,12 +22,12 @@ func (db *DB) Open() error {
 
 	err := os.MkdirAll(path.Dir(db.path), db.mode)
 	if err != nil {
-		return errors.Wrap(err, "could not create dir for BoltDB")
+		return fmt.Errorf("could not create dir for BoltDB: %w", err)
 	}
 
 	db.bolt, err = bbolt.Open(db.path, db.mode, db.boltOpts)
 	if err != nil {
-		return errors.Wrap(err, "could not open BoltDB")
+		return fmt.Errorf("could not open BoltDB: %w", err)
 	}
 
 	return nil
@@ -110,7 +111,7 @@ func (db *DB) Put(key locodedb.Key, rec locodedb.Record) error {
 
 		bktCountry, err := tx.CreateBucketIfNotExists(countryKey)
 		if err != nil {
-			return errors.Wrap(err, "could not create country bucket")
+			return fmt.Errorf("could not create country bucket: %w", err)
 		}
 
 		// TODO: write country name once in Country bucket

pkg/util/locode/db/continents/geojson/calls.go

@@ -1,13 +1,13 @@
 package continentsdb
 
 import (
+	"fmt"
 	"io/ioutil"
 
 	locodedb "github.com/nspcc-dev/neofs-node/pkg/util/locode/db"
 	"github.com/paulmach/orb"
 	"github.com/paulmach/orb/geojson"
 	"github.com/paulmach/orb/planar"
-	"github.com/pkg/errors"
 )
 
 const continentProperty = "Continent"
@@ -55,12 +55,12 @@ func (db *DB) PointContinent(point *locodedb.Point) (*locodedb.Continent, error)
 func (db *DB) init() error {
 	data, err := ioutil.ReadFile(db.path)
 	if err != nil {
-		return errors.Wrap(err, "could not read data file")
+		return fmt.Errorf("could not read data file: %w", err)
 	}
 
 	features, err := geojson.UnmarshalFeatureCollection(data)
 	if err != nil {
-		return errors.Wrap(err, "could not unmarshal GeoJSON feature collection")
+		return fmt.Errorf("could not unmarshal GeoJSON feature collection: %w", err)
 	}
 
 	db.features = features.Features

pkg/util/locode/db/country.go

@@ -1,8 +1,9 @@
 package locodedb
 
 import (
+	"fmt"
+
 	locodecolumn "github.com/nspcc-dev/neofs-node/pkg/util/locode/column"
-	"github.com/pkg/errors"
 )
 
 // CountryCode represents country code for
@@ -14,7 +15,7 @@ type CountryCode locodecolumn.CountryCode
 func CountryCodeFromString(s string) (*CountryCode, error) {
 	cc, err := locodecolumn.CountryCodeFromString(s)
 	if err != nil {
-		return nil, errors.Wrap(err, "could not parse country code")
+		return nil, fmt.Errorf("could not parse country code: %w", err)
 	}
 
 	return CountryFromColumn(cc)

pkg/util/locode/db/db.go

@@ -1,8 +1,10 @@
 package locodedb
 
 import (
+	"errors"
+	"fmt"
+
 	"github.com/nspcc-dev/neofs-node/pkg/util/locode"
-	"github.com/pkg/errors"
 )
 
 // SourceTable is an interface of the UN/LOCODE table.
@@ -139,7 +141,7 @@ func FillDatabase(table SourceTable, airports AirportDB, continents ContinentsDB
 
 		continent, err := continents.PointContinent(geoPoint)
 		if err != nil {
-			return errors.Wrap(err, "could not calculate continent geo point")
+			return fmt.Errorf("could not calculate continent geo point: %w", err)
 		} else if continent.Is(ContinentUnknown) {
 			return nil
 		}
@@ -155,7 +157,7 @@ func FillDatabase(table SourceTable, airports AirportDB, continents ContinentsDB
 func LocodeRecord(db DB, sLocode string) (*Record, error) {
 	lc, err := locode.FromString(sLocode)
 	if err != nil {
-		return nil, errors.Wrap(err, "could not parse locode")
+		return nil, fmt.Errorf("could not parse locode: %w", err)
 	}
 
 	key, err := NewKey(*lc)

pkg/util/locode/db/location.go

@@ -1,8 +1,9 @@
 package locodedb
 
 import (
+	"fmt"
+
 	locodecolumn "github.com/nspcc-dev/neofs-node/pkg/util/locode/column"
-	"github.com/pkg/errors"
 )
 
 // LocationCode represents location code for
@@ -14,7 +15,7 @@ type LocationCode locodecolumn.LocationCode
 func LocationCodeFromString(s string) (*LocationCode, error) {
 	lc, err := locodecolumn.LocationCodeFromString(s)
 	if err != nil {
-		return nil, errors.Wrap(err, "could not parse location code")
+		return nil, fmt.Errorf("could not parse location code: %w", err)
 	}
 
 	return LocationFromColumn(lc)

pkg/util/locode/db/record.go

@@ -1,9 +1,11 @@
 package locodedb
 
 import (
+	"errors"
+	"fmt"
+
 	"github.com/nspcc-dev/neofs-node/pkg/util/locode"
 	locodecolumn "github.com/nspcc-dev/neofs-node/pkg/util/locode/column"
-	"github.com/pkg/errors"
 )
 
 // Key represents the key in NeoFS location database.
@@ -17,12 +19,12 @@ type Key struct {
 func NewKey(lc locode.LOCODE) (*Key, error) {
 	country, err := CountryCodeFromString(lc.CountryCode())
 	if err != nil {
-		return nil, errors.Wrap(err, "could not parse country")
+		return nil, fmt.Errorf("could not parse country: %w", err)
 	}
 
 	location, err := LocationCodeFromString(lc.LocationCode())
 	if err != nil {
-		return nil, errors.Wrap(err, "could not parse location")
+		return nil, fmt.Errorf("could not parse location: %w", err)
 	}
 
 	return &Key{
@@ -62,12 +64,12 @@ var errParseCoordinates = errors.New("invalid coordinates")
 func NewRecord(r locode.Record) (*Record, error) {
 	crd, err := locodecolumn.CoordinatesFromString(r.Coordinates)
 	if err != nil {
-		return nil, errors.Wrap(errParseCoordinates, err.Error())
+		return nil, fmt.Errorf("%w: %v", errParseCoordinates, err)
 	}
 
 	point, err := PointFromCoordinates(crd)
 	if err != nil {
-		return nil, errors.Wrap(err, "could not parse geo point")
+		return nil, fmt.Errorf("could not parse geo point: %w", err)
 	}
 
 	return &Record{