mirror of
https://github.com/go-gitea/gitea
synced 2024-11-28 18:32:58 +01:00
b6a95a8cb3
* Dropped unused codekit config * Integrated dynamic and static bindata for public * Ignore public bindata * Add a general generate make task * Integrated flexible public assets into web command * Updated vendoring, added all missiong govendor deps * Made the linter happy with the bindata and dynamic code * Moved public bindata definition to modules directory * Ignoring the new bindata path now * Updated to the new public modules import path * Updated public bindata command and drop the new prefix
106 lines
2.5 KiB
Go
106 lines
2.5 KiB
Go
// Copyright 2015 PingCAP, Inc.
|
|
//
|
|
// Copyright 2015 Wenbin Xiao
|
|
//
|
|
// 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,
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package kv
|
|
|
|
import (
|
|
"github.com/juju/errors"
|
|
"github.com/pingcap/tidb/terror"
|
|
"github.com/syndtr/goleveldb/leveldb"
|
|
"github.com/syndtr/goleveldb/leveldb/comparer"
|
|
"github.com/syndtr/goleveldb/leveldb/iterator"
|
|
"github.com/syndtr/goleveldb/leveldb/memdb"
|
|
"github.com/syndtr/goleveldb/leveldb/util"
|
|
)
|
|
|
|
type memDbBuffer struct {
|
|
db *memdb.DB
|
|
}
|
|
|
|
type memDbIter struct {
|
|
iter iterator.Iterator
|
|
}
|
|
|
|
// NewMemDbBuffer creates a new memDbBuffer.
|
|
func NewMemDbBuffer() MemBuffer {
|
|
return &memDbBuffer{db: memdb.New(comparer.DefaultComparer, 4*1024)}
|
|
}
|
|
|
|
// Seek creates an Iterator.
|
|
func (m *memDbBuffer) Seek(k Key) (Iterator, error) {
|
|
var i Iterator
|
|
if k == nil {
|
|
i = &memDbIter{iter: m.db.NewIterator(&util.Range{})}
|
|
} else {
|
|
i = &memDbIter{iter: m.db.NewIterator(&util.Range{Start: []byte(k)})}
|
|
}
|
|
i.Next()
|
|
return i, nil
|
|
}
|
|
|
|
// Get returns the value associated with key.
|
|
func (m *memDbBuffer) Get(k Key) ([]byte, error) {
|
|
v, err := m.db.Get(k)
|
|
if terror.ErrorEqual(err, leveldb.ErrNotFound) {
|
|
return nil, ErrNotExist
|
|
}
|
|
return v, nil
|
|
}
|
|
|
|
// Set associates key with value.
|
|
func (m *memDbBuffer) Set(k Key, v []byte) error {
|
|
if len(v) == 0 {
|
|
return errors.Trace(ErrCannotSetNilValue)
|
|
}
|
|
err := m.db.Put(k, v)
|
|
return errors.Trace(err)
|
|
}
|
|
|
|
// Delete removes the entry from buffer with provided key.
|
|
func (m *memDbBuffer) Delete(k Key) error {
|
|
err := m.db.Put(k, nil)
|
|
return errors.Trace(err)
|
|
}
|
|
|
|
// Release reset the buffer.
|
|
func (m *memDbBuffer) Release() {
|
|
m.db.Reset()
|
|
}
|
|
|
|
// Next implements the Iterator Next.
|
|
func (i *memDbIter) Next() error {
|
|
i.iter.Next()
|
|
return nil
|
|
}
|
|
|
|
// Valid implements the Iterator Valid.
|
|
func (i *memDbIter) Valid() bool {
|
|
return i.iter.Valid()
|
|
}
|
|
|
|
// Key implements the Iterator Key.
|
|
func (i *memDbIter) Key() Key {
|
|
return i.iter.Key()
|
|
}
|
|
|
|
// Value implements the Iterator Value.
|
|
func (i *memDbIter) Value() []byte {
|
|
return i.iter.Value()
|
|
}
|
|
|
|
// Close Implements the Iterator Close.
|
|
func (i *memDbIter) Close() {
|
|
i.iter.Release()
|
|
}
|