[#125] node: Remove redundant env from config/internal

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

cmd/frostfs-node/config/calls_test.go

@@ -2,10 +2,10 @@ package config_test
 
 import (
 	"os"
+	"strings"
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/internal"
 	configtest "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/test"
 	"github.com/stretchr/testify/require"
 )
@@ -35,7 +35,9 @@ func TestConfigEnv(t *testing.T) {
 		value   = "some value"
 	)
 
-	err := os.Setenv(internal.Env(section, name), value)
+	envName := strings.ToUpper(
+		strings.Join([]string{config.EnvPrefix, section, name}, config.EnvSeparator))
+	err := os.Setenv(envName, value)
 	require.NoError(t, err)
 
 	c := configtest.EmptyConfig()

cmd/frostfs-node/config/config.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"strings"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/internal"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/config"
 	"github.com/spf13/viper"
 )
@@ -24,7 +23,16 @@ type Config struct {
 	path        []string
 }
 
-const separator = "."
+const (
+	separator = "."
+
+	// EnvPrefix is a prefix of ENV variables related
+	// to storage node configuration.
+	EnvPrefix = "FROSTFS"
+
+	// EnvSeparator is a section separator in ENV variables.
+	EnvSeparator = "_"
+)
 
 // Prm groups required parameters of the Config.
 type Prm struct{}
@@ -37,9 +45,9 @@ type Prm struct{}
 func New(_ Prm, opts ...Option) *Config {
 	v := viper.New()
 
-	v.SetEnvPrefix(internal.EnvPrefix)
+	v.SetEnvPrefix(EnvPrefix)
 	v.AutomaticEnv()
-	v.SetEnvKeyReplacer(strings.NewReplacer(separator, internal.EnvSeparator))
+	v.SetEnvKeyReplacer(strings.NewReplacer(separator, EnvSeparator))
 
 	o := defaultOpts()
 	for i := range opts {

cmd/frostfs-node/config/internal/env.go

@@ -1,22 +0,0 @@
-package internal
-
-import (
-	"strings"
-)
-
-// EnvPrefix is a prefix of ENV variables related
-// to storage node configuration.
-const EnvPrefix = "FROSTFS"
-
-// EnvSeparator is a section separator in ENV variables.
-const EnvSeparator = "_"
-
-// Env returns ENV variable key for a particular config parameter.
-func Env(path ...string) string {
-	return strings.ToUpper(
-		strings.Join(
-			append([]string{EnvPrefix}, path...),
-			EnvSeparator,
-		),
-	)
-}

cmd/frostfs-node/config/internal/env_test.go

@@ -1,15 +0,0 @@
-package internal_test
-
-import (
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/internal"
-	"github.com/stretchr/testify/require"
-)
-
-func TestEnv(t *testing.T) {
-	require.Equal(t,
-		"FROSTFS_SECTION_PARAMETER",
-		internal.Env("section", "parameter"),
-	)
-}