first

lib/cache/cache.go

@@ -0,0 +1,71 @@
+package cache
+
+import (
+	"encoding/json"
+)
+
+type Handler interface {
+	Get(key string, value interface{}) error
+	Set(key string, value interface{}, exp int) error
+	Gc() error
+}
+
+// MaxTimeOut 最大超时时间
+
+const (
+	TypeMem    = "memory"
+	TypeRedis  = "redis"
+	TypeFile   = "file"
+	MaxTimeOut = 365 * 24 * 3600
+)
+
+func New(typ string) Handler {
+	var cache Handler
+	switch typ {
+	case TypeFile:
+		cache = NewFileCache()
+	case TypeRedis:
+		cache = new(RedisCache)
+	case TypeMem: // memory
+		cache = NewMemoryCache(0)
+	default:
+		cache = NewMemoryCache(0)
+	}
+	return cache
+}
+
+func EncodeValue(value interface{}) (string, error) {
+	/*if v, ok := value.(string); ok {
+		return v, nil
+	}
+	if v, ok := value.([]byte); ok {
+		return string(v), nil
+	}*/
+	b, err := json.Marshal(value)
+	if err != nil {
+		return "", err
+	}
+	return string(b), nil
+}
+
+func DecodeValue(value string, rtv interface{}) error {
+	//判断rtv的类型是否是string，如果是string，直接赋值并返回
+	/*switch rtv.(type) {
+	case *string:
+		*(rtv.(*string)) = value
+		return nil
+	case *[]byte:
+		*(rtv.(*[]byte)) = []byte(value)
+		return nil
+	//struct
+	case *interface{}:
+		err := json.Unmarshal(([]byte)(value), rtv)
+		return err
+	default:
+		err := json.Unmarshal(([]byte)(value), rtv)
+		return err
+	}
+	*/
+	err := json.Unmarshal(([]byte)(value), rtv)
+	return err
+}