Go parse yaml file

Question

I\'m trying to parse a yaml file with Go. Unfortunately I can\'t figure out how. The yaml file I have is this:

---
firewall_network_rules:
  rule1:
    src:          


        

Answer 1

If your YAML file is simple (single nesting) like following

mongo:
    DB: database
    COL: collection
log:
    error: log/error/error.log
api:
    key: jhgwewbcjwefwjfg

Here, you can use interface instead of declaring struct.

main(){
  config := Config()
  mongoConfig := config["mongo"]

  mongo.MongoDial(
    String(
        Get(mongoConfig, "DB")
    ), 
    String(
        Get(mongoConfig, "COL")
    )
  )
}

func Config() map[string]interface{} {
    filename, _ := filepath.Abs("configs/config.yaml")
    yamlFile, err := ioutil.ReadFile(filename)

    if err != nil {
        panic(err)
    }

    var config map[string]interface{}

    err = yaml.Unmarshal(yamlFile, &config)
    if err != nil {
        panic(err)
    }

    return config
}
func Get(this interface{}, key string) interface{}  {
    return this.(map[interface{}]interface{})[key]
}
func String(payload interface{}) string  {
    var load string
    if pay, oh := payload.(string); oh {
        load = pay
    }else{
        load = ""
    }
    return load
}

This works fine for level 1 nesting, if you have complex nesting then it is recommended to use struct.