增加vendor

vendor/github.com/silenceper/wechat/v2/cache/memcache.go

@@ -0,0 +1,57 @@
+package cache
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/bradfitz/gomemcache/memcache"
+)
+
+// Memcache struct contains *memcache.Client
+type Memcache struct {
+	conn *memcache.Client
+}
+
+// NewMemcache create new memcache
+func NewMemcache(server ...string) *Memcache {
+	mc := memcache.New(server...)
+	return &Memcache{mc}
+}
+
+// Get return cached value
+func (mem *Memcache) Get(key string) interface{} {
+	var err error
+	var item *memcache.Item
+	if item, err = mem.conn.Get(key); err != nil {
+		return nil
+	}
+	var result interface{}
+	if err = json.Unmarshal(item.Value, &result); err != nil {
+		return nil
+	}
+	return result
+}
+
+// IsExist check value exists in memcache.
+func (mem *Memcache) IsExist(key string) bool {
+	if _, err := mem.conn.Get(key); err != nil {
+		return false
+	}
+	return true
+}
+
+// Set cached value with key and expire time.
+func (mem *Memcache) Set(key string, val interface{}, timeout time.Duration) (err error) {
+	var data []byte
+	if data, err = json.Marshal(val); err != nil {
+		return err
+	}
+
+	item := &memcache.Item{Key: key, Value: data, Expiration: int32(timeout / time.Second)}
+	return mem.conn.Set(item)
+}
+
+// Delete delete value in memcache.
+func (mem *Memcache) Delete(key string) error {
+	return mem.conn.Delete(key)
+}