Fix error log when loading issues caused by a xorm bug (#7271)

* fix error log when loading issues caused by a xorm bug

* upgrade packages

* fix fmt

* fix Consistency

* fix tests

vendor/xorm.io/core/cache.go

@@ -0,0 +1,91 @@
+// Copyright 2019 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package core
+
+import (
+	"bytes"
+	"encoding/gob"
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+)
+
+const (
+	// default cache expired time
+	CacheExpired = 60 * time.Minute
+	// not use now
+	CacheMaxMemory = 256
+	// evey ten minutes to clear all expired nodes
+	CacheGcInterval = 10 * time.Minute
+	// each time when gc to removed max nodes
+	CacheGcMaxRemoved = 20
+)
+
+var (
+	ErrCacheMiss = errors.New("xorm/cache: key not found.")
+	ErrNotStored = errors.New("xorm/cache: not stored.")
+)
+
+// CacheStore is a interface to store cache
+type CacheStore interface {
+	// key is primary key or composite primary key
+	// value is struct's pointer
+	// key format : <tablename>-p-<pk1>-<pk2>...
+	Put(key string, value interface{}) error
+	Get(key string) (interface{}, error)
+	Del(key string) error
+}
+
+// Cacher is an interface to provide cache
+// id format : u-<pk1>-<pk2>...
+type Cacher interface {
+	GetIds(tableName, sql string) interface{}
+	GetBean(tableName string, id string) interface{}
+	PutIds(tableName, sql string, ids interface{})
+	PutBean(tableName string, id string, obj interface{})
+	DelIds(tableName, sql string)
+	DelBean(tableName string, id string)
+	ClearIds(tableName string)
+	ClearBeans(tableName string)
+}
+
+func encodeIds(ids []PK) (string, error) {
+	buf := new(bytes.Buffer)
+	enc := gob.NewEncoder(buf)
+	err := enc.Encode(ids)
+
+	return buf.String(), err
+}
+
+func decodeIds(s string) ([]PK, error) {
+	pks := make([]PK, 0)
+
+	dec := gob.NewDecoder(strings.NewReader(s))
+	err := dec.Decode(&pks)
+
+	return pks, err
+}
+
+func GetCacheSql(m Cacher, tableName, sql string, args interface{}) ([]PK, error) {
+	bytes := m.GetIds(tableName, GenSqlKey(sql, args))
+	if bytes == nil {
+		return nil, errors.New("Not Exist")
+	}
+	return decodeIds(bytes.(string))
+}
+
+func PutCacheSql(m Cacher, ids []PK, tableName, sql string, args interface{}) error {
+	bytes, err := encodeIds(ids)
+	if err != nil {
+		return err
+	}
+	m.PutIds(tableName, GenSqlKey(sql, args), bytes)
+	return nil
+}
+
+func GenSqlKey(sql string, args interface{}) string {
+	return fmt.Sprintf("%v-%v", sql, args)
+}