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load.go
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load.go
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package config
import (
"fmt"
"os"
"github.com/jessevdk/go-flags"
)
type ConfigPath struct {
ConfigPath string `long:"config" description:"yaml config file path"`
}
type Validator interface {
Validate() error
}
func LoadAndValidateConfig(v Validator) error {
err := Load(v)
if err != nil {
return err
}
err = v.Validate()
if err != nil {
return fmt.Errorf("invalid value: %w", err)
}
return nil
}
// Load loads config from ENV config or arguments config.
func Load(config interface{}) error {
var c ConfigPath
_, err := flags.NewParser(&c, flags.Default|flags.IgnoreUnknown).Parse()
if err != nil {
return err
}
return Read(c.ConfigPath, config)
}
// Read reads config from file.
func Read(filename string, config interface{}) error {
cfg, err := os.ReadFile(filename)
if err != nil {
return err
}
return Parse(cfg, config)
}