mirror of
https://github.com/go-gitea/gitea
synced 2024-11-19 00:24:31 +00:00
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
144 lines
3.2 KiB
Go
144 lines
3.2 KiB
Go
// Copyright 2015 PingCAP, Inc.
|
|
//
|
|
// 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 hbasekv
|
|
|
|
import (
|
|
"github.com/juju/errors"
|
|
"github.com/pingcap/go-hbase"
|
|
"github.com/pingcap/go-themis"
|
|
"github.com/pingcap/tidb/kv"
|
|
)
|
|
|
|
var (
|
|
_ kv.Snapshot = (*hbaseSnapshot)(nil)
|
|
_ kv.Iterator = (*hbaseIter)(nil)
|
|
)
|
|
|
|
// hbaseBatchSize is used for go-themis Scanner.
|
|
const hbaseBatchSize = 1000
|
|
|
|
// hbaseSnapshot implements MvccSnapshot interface.
|
|
type hbaseSnapshot struct {
|
|
txn themis.Txn
|
|
storeName string
|
|
}
|
|
|
|
// newHBaseSnapshot creates a snapshot of an HBase store.
|
|
func newHbaseSnapshot(txn themis.Txn, storeName string) *hbaseSnapshot {
|
|
return &hbaseSnapshot{
|
|
txn: txn,
|
|
storeName: storeName,
|
|
}
|
|
}
|
|
|
|
// Get gets the value for key k from snapshot.
|
|
func (s *hbaseSnapshot) Get(k kv.Key) ([]byte, error) {
|
|
g := hbase.NewGet([]byte(k))
|
|
g.AddColumn(hbaseColFamilyBytes, hbaseQualifierBytes)
|
|
v, err := internalGet(s, g)
|
|
if err != nil {
|
|
return nil, errors.Trace(err)
|
|
}
|
|
return v, nil
|
|
}
|
|
|
|
// BatchGet implements kv.Snapshot.BatchGet interface.
|
|
func (s *hbaseSnapshot) BatchGet(keys []kv.Key) (map[string][]byte, error) {
|
|
gets := make([]*hbase.Get, len(keys))
|
|
for i, key := range keys {
|
|
g := hbase.NewGet(key)
|
|
g.AddColumn(hbaseColFamilyBytes, hbaseQualifierBytes)
|
|
gets[i] = g
|
|
}
|
|
rows, err := s.txn.Gets(s.storeName, gets)
|
|
if err != nil {
|
|
return nil, errors.Trace(err)
|
|
}
|
|
|
|
m := make(map[string][]byte, len(rows))
|
|
for _, r := range rows {
|
|
k := string(r.Row)
|
|
v := r.Columns[hbaseFmlAndQual].Value
|
|
m[k] = v
|
|
}
|
|
return m, nil
|
|
}
|
|
|
|
func internalGet(s *hbaseSnapshot, g *hbase.Get) ([]byte, error) {
|
|
r, err := s.txn.Get(s.storeName, g)
|
|
if err != nil {
|
|
return nil, errors.Trace(err)
|
|
}
|
|
if r == nil || len(r.Columns) == 0 {
|
|
return nil, errors.Trace(kv.ErrNotExist)
|
|
}
|
|
return r.Columns[hbaseFmlAndQual].Value, nil
|
|
}
|
|
|
|
func (s *hbaseSnapshot) Seek(k kv.Key) (kv.Iterator, error) {
|
|
scanner := s.txn.GetScanner([]byte(s.storeName), []byte(k), nil, hbaseBatchSize)
|
|
return newInnerScanner(scanner), nil
|
|
}
|
|
|
|
func newInnerScanner(scanner *themis.ThemisScanner) kv.Iterator {
|
|
it := &hbaseIter{
|
|
ThemisScanner: scanner,
|
|
}
|
|
it.Next()
|
|
return it
|
|
}
|
|
|
|
func (s *hbaseSnapshot) Release() {
|
|
if s.txn != nil {
|
|
s.txn.Release()
|
|
s.txn = nil
|
|
}
|
|
}
|
|
|
|
type hbaseIter struct {
|
|
*themis.ThemisScanner
|
|
rs *hbase.ResultRow
|
|
}
|
|
|
|
func (it *hbaseIter) Next() error {
|
|
it.rs = it.ThemisScanner.Next()
|
|
return nil
|
|
}
|
|
|
|
func (it *hbaseIter) Valid() bool {
|
|
if it.rs == nil || len(it.rs.Columns) == 0 {
|
|
return false
|
|
}
|
|
if it.ThemisScanner.Closed() {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
func (it *hbaseIter) Key() kv.Key {
|
|
return it.rs.Row
|
|
}
|
|
|
|
func (it *hbaseIter) Value() []byte {
|
|
return it.rs.Columns[hbaseFmlAndQual].Value
|
|
}
|
|
|
|
func (it *hbaseIter) Close() {
|
|
if it.ThemisScanner != nil {
|
|
it.ThemisScanner.Close()
|
|
it.ThemisScanner = nil
|
|
}
|
|
it.rs = nil
|
|
}
|