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package config
import (
"bytes"
"strings"
"github.com/spf13/viper"
"github.com/spiral/errors"
)
type Viper struct {
viper *viper.Viper
Path string
Prefix string
Type string
ReadInCfg []byte
}
// Inits config provider.
func (v *Viper) Init() error {
const op = errors.Op("viper plugin init")
v.viper = viper.New()
// If user provided []byte data with config, read it and ignore Path and Prefix
if v.ReadInCfg != nil && v.Type != "" {
v.viper.SetConfigType("yaml")
return v.viper.ReadConfig(bytes.NewBuffer(v.ReadInCfg))
}
// read in environment variables that match
v.viper.AutomaticEnv()
if v.Prefix == "" {
return errors.E(op, errors.Str("prefix should be set"))
}
v.viper.SetEnvPrefix(v.Prefix)
if v.Path == "" {
return errors.E(op, errors.Str("path should be set"))
}
v.viper.SetConfigFile(v.Path)
v.viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
return v.viper.ReadInConfig()
}
// Overwrite overwrites existing config with provided values
func (v *Viper) Overwrite(values map[string]interface{}) error {
if len(values) != 0 {
for key, value := range values {
v.viper.Set(key, value)
}
}
return nil
}
// UnmarshalKey reads configuration section into configuration object.
func (v *Viper) UnmarshalKey(name string, out interface{}) error {
const op = errors.Op("unmarshal key")
err := v.viper.UnmarshalKey(name, &out)
if err != nil {
return errors.E(op, err)
}
return nil
}
// Get raw config in a form of config section.
func (v *Viper) Get(name string) interface{} {
return v.viper.Get(name)
}
// Has checks if config section exists.
func (v *Viper) Has(name string) bool {
return v.viper.IsSet(name)
}
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