89 lines
1.7 KiB
Go
89 lines
1.7 KiB
Go
|
// Copyright © 2016 Abcum Ltd
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
package txn
|
||
|
|
|
||
|
|
import (
|
||
|
|
"sync"
|
||
|
|
|
||
|
|
"context"
|
||
|
|
|
||
|
|
"github.com/abcum/surreal/kvs"
|
||
|
|
)
|
||
|
|
|
||
|
|
type symbol int8
|
||
|
|
|
||
|
|
const (
|
||
|
|
_ns symbol = iota
|
||
|
|
_db
|
||
|
|
_tb
|
||
|
|
_fd
|
||
|
|
_ix
|
||
|
|
_ev
|
||
|
|
_ft
|
||
|
|
_lv
|
||
|
|
_kv
|
||
|
|
)
|
||
|
|
|
||
|
|
// --------------------------------------------------
|
||
|
|
|
||
|
|
type TX struct {
|
||
|
|
kvs.TX
|
||
|
|
lock sync.RWMutex
|
||
|
|
data map[symbol]map[string]interface{}
|
||
|
|
}
|
||
|
|
|
||
|
|
func New(ctx context.Context, rw bool) (*TX, error) {
|
||
|
|
txn, err := kvs.Begin(ctx, rw)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
return &TX{TX: txn}, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------
|
||
|
|
|
||
|
|
func (t *TX) mem(s symbol) {
|
||
|
|
t.lock.Lock()
|
||
|
|
if t.data == nil {
|
||
|
|
t.data = make(map[symbol]map[string]interface{}, 8)
|
||
|
|
}
|
||
|
|
if t.data[s] == nil {
|
||
|
|
t.data[s] = make(map[string]interface{}, 5)
|
||
|
|
}
|
||
|
|
t.lock.Unlock()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (t *TX) del(s symbol, key string) {
|
||
|
|
t.mem(s)
|
||
|
|
t.lock.Lock()
|
||
|
|
delete(t.data[s], key)
|
||
|
|
t.lock.Unlock()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (t *TX) set(s symbol, key string, val interface{}) {
|
||
|
|
t.mem(s)
|
||
|
|
t.lock.Lock()
|
||
|
|
t.data[s][key] = val
|
||
|
|
t.lock.Unlock()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (t *TX) get(s symbol, key string) (val interface{}, ok bool) {
|
||
|
|
t.mem(s)
|
||
|
|
t.lock.RLock()
|
||
|
|
val, ok = t.data[s][key]
|
||
|
|
t.lock.RUnlock()
|
||
|
|
return
|
||
|
|
}
|