grain/utils/utils.go

package utils

import (
	"io/ioutil"

	"gopkg.in/yaml.v2"
)

type Config struct {
	MongoDB struct {
		URI      string `yaml:"uri"`
		Database string `yaml:"database"`
	} `yaml:"mongodb"`
	Collections struct {
		EventKind0 string `yaml:"event_kind0"`
		EventKind1 string `yaml:"event_kind1"`
	} `yaml:"collections"`
	Server struct {
		Address string `yaml:"address"`
	} `yaml:"server"`
}

func LoadConfig(filename string) (*Config, error) {
	data, err := ioutil.ReadFile(filename)
	if err != nil {
		return nil, err
	}

	var config Config
	err = yaml.Unmarshal(data, &config)
	if err != nil {
		return nil, err
	}

	return &config, nil
}