node-api/common/config.go

package common

import (
	"log"

	"github.com/kelseyhightower/envconfig"
)

// Config keeps info about configuration of this daemon
type Config struct {
	Token          string `envconfig:"TOKEN" required:"true"`
	AppsPath       string `envconfig:"APPS_PATH" default:"/srv"`            // Where applications are located
	AppsBindIPHTTP string `envconfig:"APPS_BIND_IP_HTTP" default:"0.0.0.0"` // On what IP apps' HTTP port gonna be bound
	AppsBindIPSSH  string `envconfig:"APPS_BIND_IP_SSH" default:"0.0.0.0"`  // On what IP apps' SSH ports gonna be bound
	NATSURL        string `envconfig:"NATS_URL" required:"true"`
	NATSAlias      string `envconfig:"NATS_ALIAS" required:"true"` // name/alias of the instance, ex. node-18
	DatabasePath   string `envconfig:"DATABASE_PATH" default:"/var/lib/node-api/rosti.db"`
}

// GetConfig return configuration created based on environment variables
func GetConfig() *Config {
	var config Config

	err := envconfig.Process("", &config)
	if err != nil {
		log.Fatal(err.Error())
	}

	return &config
}