oc-schedulerd/conf/conf.go

package conf

import (
	"sync"

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

type Config struct {
	MonitorPath   string
	Logs          string
	KubeHost      string
	KubePort      string
	KubeCA        string
	KubeCert      string
	KubeData      string
	KubeNamespace string
	KubeImage     string
}

var instance *Config
var once sync.Once

const defaultConfigFile = "/etc/oc/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
	}
	if configFile == "" || l2 == nil {
		logs.Info("No config file found, using env")
		o = onion.New(l3)
	} else {
		o = onion.New(l2, l3)
	}
	GetConfig().MonitorPath = o.GetStringDefault("MONITORD_PATH", "../oc-monitord/oc-monitord")
	GetConfig().KubeHost = o.GetStringDefault("KUBE_HOST", "")
	GetConfig().KubePort = o.GetStringDefault("KUBE_PORT", "6443")
	GetConfig().KubeCA = o.GetStringDefault("KUBE_CA", "")
	GetConfig().KubeCert = o.GetStringDefault("KUBE_CERT", "")
	GetConfig().KubeData = o.GetStringDefault("KUBE_DATA", "")
	GetConfig().KubeNamespace = o.GetStringDefault("KUBE_NAMESPACE", "default")
	GetConfig().KubeImage = o.GetStringDefault("KUBE_IMAGE", "oc-monitord")
}

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