1 /*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #ifndef OMIT_MULTI_VER
17 #include "multi_ver_storage_engine.h"
18
19 #include "multi_ver_storage_executor.h"
20
21 #include "db_errno.h"
22
23 namespace DistributedDB {
MultiVerStorageEngine()24 MultiVerStorageEngine::MultiVerStorageEngine()
25 : kvDB_(nullptr),
26 dataStorage_(nullptr),
27 commitStorage_(nullptr),
28 kvDataStorage_(nullptr)
29 {}
30
~MultiVerStorageEngine()31 MultiVerStorageEngine::~MultiVerStorageEngine()
32 {
33 kvDB_ = nullptr;
34 dataStorage_ = nullptr;
35 commitStorage_ = nullptr;
36 kvDataStorage_ = nullptr;
37 }
38
InitDatabases(IKvDB * kvDB,IKvDBMultiVerDataStorage * dataStorage,IKvDBCommitStorage * commitStorage,MultiVerKvDataStorage * kvDataStorage,const StorageEngineAttr & poolSize)39 int MultiVerStorageEngine::InitDatabases(IKvDB *kvDB, IKvDBMultiVerDataStorage *dataStorage,
40 IKvDBCommitStorage *commitStorage, MultiVerKvDataStorage *kvDataStorage, const StorageEngineAttr &poolSize)
41 {
42 if (StorageEngine::CheckEngineAttr(poolSize)) {
43 return -E_INVALID_ARGS;
44 }
45 if (kvDB == nullptr || dataStorage == nullptr ||
46 commitStorage == nullptr || kvDataStorage == nullptr) {
47 return -E_INVALID_DB;
48 }
49 engineAttr_ = poolSize;
50 kvDB_ = kvDB;
51 dataStorage_ = dataStorage;
52 commitStorage_ = commitStorage;
53 kvDataStorage_ = kvDataStorage;
54 return Init();
55 }
56
CreateNewExecutor(bool isWrite,StorageExecutor * & handle)57 int MultiVerStorageEngine::CreateNewExecutor(bool isWrite, StorageExecutor *&handle)
58 {
59 handle = new (std::nothrow) MultiVerStorageExecutor(kvDB_, dataStorage_, commitStorage_, kvDataStorage_, isWrite);
60 if (handle == nullptr) {
61 return -E_OUT_OF_MEMORY;
62 }
63 return E_OK;
64 }
65 }
66 #endif