frostfs-node/pkg/util/config/dir.go

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package config
import (
"fmt"
"os"
"path"
"github.com/spf13/viper"
)
// ReadConfigDir reads all config files from provided directory in alphabetical order
// and merge its content with current viper configuration.
func ReadConfigDir(v *viper.Viper, configDir string) error {
entries, err := os.ReadDir(configDir)
if err != nil {
return err
}
for _, entry := range entries {
if entry.IsDir() {
continue
}
ext := path.Ext(entry.Name())
if ext != ".yaml" && ext != ".yml" && ext != ".json" {
continue
}
if err = mergeConfig(v, path.Join(configDir, entry.Name())); err != nil {
return err
}
}
return nil
}
// mergeConfig reads config file and merge its content with current viper.
func mergeConfig(v *viper.Viper, fileName string) error {
cv := viper.New()
cv.SetConfigFile(fileName)
err := cv.ReadInConfig()
if err != nil {
return fmt.Errorf("failed to read config: %w", err)
}
if err = v.MergeConfigMap(cv.AllSettings()); err != nil {
return fmt.Errorf("failed to merge config: %w", err)
}
return nil
}