Refactoring to a cleaner architecture

persistence/ledis_utils.go

@@ -0,0 +1,35 @@
+package persistence
+
+import (
+	"sync"
+	"github.com/astaxie/beego"
+	"github.com/siddontang/ledisdb/ledis"
+	"github.com/siddontang/ledisdb/config"
+)
+
+var (
+	_ledisInstance *ledis.Ledis
+	_dbInstance *ledis.DB
+	once sync.Once
+)
+
+func db() *ledis.DB {
+	once.Do(func() {
+		config := config.NewConfigDefault()
+		config.DataDir = beego.AppConfig.String("dbPath")
+		l, _ := ledis.Open(config)
+		instance, err := l.Select(0)
+		if err != nil {
+			panic(err)
+		}
+		_ledisInstance = l
+		_dbInstance = instance
+	})
+	return _dbInstance
+}
+
+
+func dropDb() {
+	db()
+	_ledisInstance.FlushAll()
+}