refactor(storage): move interface to core package

core/storage.go

@@ -0,0 +1,33 @@
+package core
+
+const (
+	// TotalCountKey is key name for total count of storage
+	TotalCountKey = "gorush-total-count"
+
+	// IosSuccessKey is key name or ios success count of storage
+	IosSuccessKey = "gorush-ios-success-count"
+
+	// IosErrorKey is key name or ios success error of storage
+	IosErrorKey = "gorush-ios-error-count"
+
+	// AndroidSuccessKey is key name for android success count of storage
+	AndroidSuccessKey = "gorush-android-success-count"
+
+	// AndroidErrorKey is key name for android error count of storage
+	AndroidErrorKey = "gorush-android-error-count"
+
+	// HuaweiSuccessKey is key name for huawei success count of storage
+	HuaweiSuccessKey = "gorush-huawei-success-count"
+
+	// HuaweiErrorKey is key name for huawei error count of storage
+	HuaweiErrorKey = "gorush-huawei-error-count"
+)
+
+// Storage interface
+type Storage interface {
+	Init() error
+	Add(key string, count int64)
+	Set(key string, count int64)
+	Get(key string) int64
+	Close() error
+}