oc-schedulerd/conf/conf.go

package conf

import (
	"sync"

	"github.com/beego/beego/logs"
	"github.com/goraz/onion"
)

type Config struct {
	MonitorPath  string
	OcCatalogUrl string
	MongoUrl     string
	DBName       string
	Logs         string
	LokiUrl      string
	NatsUrl      string
}

var instance *Config
var once sync.Once

const defaultConfigFile = "/etc/oc/schedulerd.json"
const localConfigFile = "./conf/local_schedulerd.json"

func init() {
	configFile := ""
	var o *onion.Onion

	l3 := onion.NewEnvLayerPrefix("_", "OCSCHEDULERD_")
	l2, err := onion.NewFileLayer(defaultConfigFile, nil)
	if err == nil {
		logs.Info("Config file found : " + defaultConfigFile)
		configFile = defaultConfigFile
	}
	l1, err := onion.NewFileLayer(localConfigFile, nil)
	if err == nil {
		logs.Info("Local config file found " + localConfigFile + ", overriding default file")
		configFile = localConfigFile
	}
	if configFile == "" {
		logs.Info("No config file found, using env")
		o = onion.New(l3)
	} else if l1 == nil && l2 == nil {
		o = onion.New(l1, l2, l3)
	} else if l1 == nil {
		o = onion.New(l2, l3)
	} else if l2 == nil {
		o = onion.New(l1, l3)
	}
	GetConfig().MonitorPath = o.GetStringDefault("MONITORD_PATH", "../oc-monitord/oc-monitord")
	GetConfig().OcCatalogUrl = o.GetStringDefault("oc-catalog", "https://localhost:49618")
	GetConfig().Logs = o.GetStringDefault("loglevel", "info")
	GetConfig().LokiUrl = o.GetStringDefault("loki_url", "http://127.0.0.1:3100")
	GetConfig().NatsUrl = o.GetStringDefault("nats_url", "http://127.0.0.1:4222")
	GetConfig().MongoUrl = o.GetStringDefault("mongo_url", "mongodb://127.0.0.1:27017")
	GetConfig().DBName = o.GetStringDefault("database_name", "DC_myDC")

}

func GetConfig() *Config {
	once.Do(func() {
		instance = &Config{}
	})
	return instance
}