impl stubbed out scrape and push

config/config.go

@@ -3,12 +3,18 @@ package config
 import (
 	"encoding/json"
 	"io/ioutil"
+	"local/storage"
 	"os"
+	"sync"
 )
 
 type Config struct {
 	Interval Duration
 	States   []State
+	Storage  []string
+
+	lock sync.Mutex
+	db   storage.DB
 }
 
 var live Config
@@ -30,6 +36,24 @@ func Refresh() error {
 	return nil
 }
 
-func Get() Config {
-	return live
+func Get() *Config {
+	return &live
+}
+
+func (c *Config) DB() storage.DB {
+	if c.db == nil {
+		c.lock.Lock()
+		defer c.lock.Unlock()
+		if c.db == nil {
+			if len(c.Storage) == 0 {
+				c.Storage = []string{storage.MAP.String()}
+			}
+			db, err := storage.New(storage.TypeFromString(c.Storage[0]), c.Storage[1:]...)
+			if err != nil {
+				panic(err)
+			}
+			c.db = db
+		}
+	}
+	return c.db
 }