mirror of
https://github.com/go-gitea/gitea.git
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* 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
183 lines
3.9 KiB
Go
183 lines
3.9 KiB
Go
// Copyright 2015 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package hbasekv
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import (
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"fmt"
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"github.com/juju/errors"
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"github.com/ngaut/log"
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"github.com/pingcap/go-hbase"
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"github.com/pingcap/go-themis"
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"github.com/pingcap/tidb/kv"
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)
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var (
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_ kv.Transaction = (*hbaseTxn)(nil)
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)
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// dbTxn implements kv.Transacton. It is not thread safe.
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type hbaseTxn struct {
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us kv.UnionStore
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txn themis.Txn
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store *hbaseStore // for commit
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storeName string
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tid uint64
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valid bool
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version kv.Version // commit version
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dirty bool
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}
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func newHbaseTxn(t themis.Txn, storeName string) *hbaseTxn {
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return &hbaseTxn{
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txn: t,
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valid: true,
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storeName: storeName,
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tid: t.GetStartTS(),
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us: kv.NewUnionStore(newHbaseSnapshot(t, storeName)),
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}
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}
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// Implement transaction interface
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func (txn *hbaseTxn) Get(k kv.Key) ([]byte, error) {
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log.Debugf("[kv] get key:%q, txn:%d", k, txn.tid)
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return txn.us.Get(k)
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}
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func (txn *hbaseTxn) Set(k kv.Key, v []byte) error {
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log.Debugf("[kv] set %q txn:%d", k, txn.tid)
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txn.dirty = true
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return txn.us.Set(k, v)
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}
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func (txn *hbaseTxn) String() string {
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return fmt.Sprintf("%d", txn.tid)
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}
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func (txn *hbaseTxn) Seek(k kv.Key) (kv.Iterator, error) {
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log.Debugf("[kv] seek %q txn:%d", k, txn.tid)
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return txn.us.Seek(k)
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}
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func (txn *hbaseTxn) Delete(k kv.Key) error {
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log.Debugf("[kv] delete %q txn:%d", k, txn.tid)
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txn.dirty = true
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return txn.us.Delete(k)
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}
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func (txn *hbaseTxn) SetOption(opt kv.Option, val interface{}) {
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txn.us.SetOption(opt, val)
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}
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func (txn *hbaseTxn) DelOption(opt kv.Option) {
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txn.us.DelOption(opt)
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}
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func (txn *hbaseTxn) doCommit() error {
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if err := txn.us.CheckLazyConditionPairs(); err != nil {
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return errors.Trace(err)
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}
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err := txn.us.WalkBuffer(func(k kv.Key, v []byte) error {
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row := append([]byte(nil), k...)
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if len(v) == 0 { // Deleted marker
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d := hbase.NewDelete(row)
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d.AddStringColumn(hbaseColFamily, hbaseQualifier)
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err := txn.txn.Delete(txn.storeName, d)
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if err != nil {
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return errors.Trace(err)
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}
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} else {
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val := append([]byte(nil), v...)
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p := hbase.NewPut(row)
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p.AddValue(hbaseColFamilyBytes, hbaseQualifierBytes, val)
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txn.txn.Put(txn.storeName, p)
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}
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return nil
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})
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if err != nil {
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return errors.Trace(err)
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}
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err = txn.txn.Commit()
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if err != nil {
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log.Error(err)
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return errors.Trace(err)
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}
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txn.version = kv.NewVersion(txn.txn.GetCommitTS())
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log.Debugf("[kv] commit successfully, txn.version:%d", txn.version.Ver)
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return nil
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}
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func (txn *hbaseTxn) Commit() error {
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if !txn.valid {
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return kv.ErrInvalidTxn
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}
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log.Debugf("[kv] start to commit txn %d", txn.tid)
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defer func() {
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txn.close()
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}()
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return txn.doCommit()
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}
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func (txn *hbaseTxn) close() error {
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txn.us.Release()
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txn.valid = false
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return nil
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}
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//if fail, themis auto rollback
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func (txn *hbaseTxn) Rollback() error {
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if !txn.valid {
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return kv.ErrInvalidTxn
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}
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log.Warnf("[kv] Rollback txn %d", txn.tid)
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return txn.close()
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}
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func (txn *hbaseTxn) LockKeys(keys ...kv.Key) error {
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for _, key := range keys {
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if err := txn.txn.LockRow(txn.storeName, key); err != nil {
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return errors.Trace(err)
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}
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}
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return nil
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}
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func (txn *hbaseTxn) IsReadOnly() bool {
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return !txn.dirty
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}
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func (txn *hbaseTxn) StartTS() int64 {
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return int64(txn.tid)
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}
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func (txn *hbaseTxn) GetClient() kv.Client {
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return nil
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}
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type hbaseClient struct {
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}
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func (c *hbaseClient) SupportRequestType(reqType, subType int64) bool {
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return false
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}
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func (c *hbaseClient) Send(req *kv.Request) kv.Response {
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return nil
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}
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