Kubernetes fixups according to #157

server/config/config.go

@@ -0,0 +1,51 @@
+package config
+
+import (
+	"os"
+	"sync"
+
+	"gopkg.in/yaml.v3"
+)
+
+type Config struct {
+	CurrentLogFile  string
+	LogPath         string `yaml:"log_path"`
+	BaseURL         string `yaml:"base_url"`
+	Host            string `yaml:"host"`
+	Port            int    `yaml:"port"`
+	DownloadPath    string `yaml:"downloadPath"`
+	DownloaderPath  string `yaml:"downloaderPath"`
+	RequireAuth     bool   `yaml:"require_auth"`
+	Username        string `yaml:"username"`
+	Password        string `yaml:"password"`
+	QueueSize       int    `yaml:"queue_size"`
+	SessionFilePath string `yaml:"session_file_path"`
+}
+
+var (
+	instance     *Config
+	instanceOnce sync.Once
+)
+
+func Instance() *Config {
+	if instance == nil {
+		instanceOnce.Do(func() {
+			instance = &Config{}
+		})
+	}
+	return instance
+}
+
+// Initialises the Config struct given its config file
+func (c *Config) LoadFile(filename string) error {
+	fd, err := os.Open(filename)
+	if err != nil {
+		return err
+	}
+
+	if err := yaml.NewDecoder(fd).Decode(c); err != nil {
+		return err
+	}
+
+	return nil
+}