]> git.lizzy.rs Git - minetest.git/blob - src/database-leveldb.cpp
Replace std::list by std::vector into ServerMap::listAllLoadableBlocks ServerMap...
[minetest.git] / src / database-leveldb.cpp
1 /*
2 Minetest
3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 GNU Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #include "config.h"
21
22 #if USE_LEVELDB
23
24 #include "database-leveldb.h"
25 #include "leveldb/db.h"
26
27 #include "map.h"
28 #include "mapsector.h"
29 #include "mapblock.h"
30 #include "serialization.h"
31 #include "main.h"
32 #include "settings.h"
33 #include "log.h"
34 #include "filesys.h"
35
36 #define ENSURE_STATUS_OK(s) \
37         if (!(s).ok()) { \
38                 throw FileNotGoodException(std::string("LevelDB error: ") + (s).ToString()); \
39         }
40
41 Database_LevelDB::Database_LevelDB(ServerMap *map, std::string savedir)
42 {
43         leveldb::Options options;
44         options.create_if_missing = true;
45         leveldb::Status status = leveldb::DB::Open(options, savedir + DIR_DELIM + "map.db", &m_database);
46         ENSURE_STATUS_OK(status);
47         srvmap = map;
48 }
49
50 int Database_LevelDB::Initialized(void)
51 {
52         return 1;
53 }
54
55 void Database_LevelDB::beginSave() {}
56 void Database_LevelDB::endSave() {}
57
58 bool Database_LevelDB::saveBlock(v3s16 blockpos, std::string &data)
59 {
60         leveldb::Status status = m_database->Put(leveldb::WriteOptions(),
61                         i64tos(getBlockAsInteger(blockpos)), data);
62         if (!status.ok()) {
63                 errorstream << "WARNING: saveBlock: LevelDB error saving block "
64                         << PP(blockpos) << ": " << status.ToString() << std::endl;
65                 return false;
66         }
67
68         return true;
69 }
70
71 std::string Database_LevelDB::loadBlock(v3s16 blockpos)
72 {
73         std::string datastr;
74         leveldb::Status status = m_database->Get(leveldb::ReadOptions(),
75                 i64tos(getBlockAsInteger(blockpos)), &datastr);
76
77         if(status.ok())
78                 return datastr;
79         else
80                 return "";
81 }
82
83 bool Database_LevelDB::deleteBlock(v3s16 blockpos)
84 {
85         leveldb::Status status = m_database->Delete(leveldb::WriteOptions(),
86                         i64tos(getBlockAsInteger(blockpos)));
87         if (!status.ok()) {
88                 errorstream << "WARNING: deleteBlock: LevelDB error deleting block "
89                         << PP(blockpos) << ": " << status.ToString() << std::endl;
90                 return false;
91         }
92
93         return true;
94 }
95
96 void Database_LevelDB::listAllLoadableBlocks(std::vector<v3s16> &dst)
97 {
98         leveldb::Iterator* it = m_database->NewIterator(leveldb::ReadOptions());
99         for (it->SeekToFirst(); it->Valid(); it->Next()) {
100                 dst.push_back(getIntegerAsBlock(stoi64(it->key().ToString())));
101         }
102         ENSURE_STATUS_OK(it->status());  // Check for any errors found during the scan
103         delete it;
104 }
105
106 Database_LevelDB::~Database_LevelDB()
107 {
108         delete m_database;
109 }
110 #endif