Moved config package to internal

internal/config/config.go

@@ -0,0 +1,58 @@
+package config
+
+import (
+	"time"
+
+	"github.com/spf13/viper"
+)
+
+// Provider defines a set of read-only methods for accessing the application
+// configuration params as defined in one of the config files.
+type Provider interface {
+	ConfigFileUsed() string
+	Get(key string) interface{}
+	GetBool(key string) bool
+	GetDuration(key string) time.Duration
+	GetFloat64(key string) float64
+	GetInt(key string) int
+	GetInt64(key string) int64
+	GetSizeInBytes(key string) uint
+	GetString(key string) string
+	GetStringMap(key string) map[string]interface{}
+	GetStringMapString(key string) map[string]string
+	GetStringMapStringSlice(key string) map[string][]string
+	GetStringSlice(key string) []string
+	GetTime(key string) time.Time
+	InConfig(key string) bool
+	IsSet(key string) bool
+}
+
+var defaultConfig *viper.Viper
+
+// Config returns a default config providers
+func Config() Provider {
+	return defaultConfig
+}
+
+// LoadConfigProvider returns a configured viper instance
+func LoadConfigProvider(appName string) Provider {
+	return readViperConfig(appName)
+}
+
+func init() {
+	defaultConfig = readViperConfig("DIRECTDNSONLY")
+}
+
+func readViperConfig(appName string) *viper.Viper {
+	v := viper.New()
+	v.SetEnvPrefix(appName)
+	v.AutomaticEnv()
+
+	// global defaults
+	
+	v.SetDefault("json_logs", false)
+	v.SetDefault("loglevel", "debug")
+	
+
+	return v
+}