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- /*
- Minetest
- Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 3.0 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #include "config.h"
- #if USE_LEVELDB
- #include "database-leveldb.h"
- #include "log.h"
- #include "filesys.h"
- #include "exceptions.h"
- #include "util/string.h"
- #include "leveldb/db.h"
- #define ENSURE_STATUS_OK(s) \
- if (!(s).ok()) { \
- throw DatabaseException(std::string("LevelDB error: ") + \
- (s).ToString()); \
- }
- Database_LevelDB::Database_LevelDB(const std::string &savedir)
- {
- leveldb::Options options;
- options.create_if_missing = true;
- leveldb::Status status = leveldb::DB::Open(options,
- savedir + DIR_DELIM + "map.db", &m_database);
- ENSURE_STATUS_OK(status);
- }
- Database_LevelDB::~Database_LevelDB()
- {
- delete m_database;
- }
- bool Database_LevelDB::saveBlock(const v3s16 &pos, const std::string &data)
- {
- leveldb::Status status = m_database->Put(leveldb::WriteOptions(),
- i64tos(getBlockAsInteger(pos)), data);
- if (!status.ok()) {
- warningstream << "saveBlock: LevelDB error saving block "
- << PP(pos) << ": " << status.ToString() << std::endl;
- return false;
- }
- return true;
- }
- void Database_LevelDB::loadBlock(const v3s16 &pos, std::string *block)
- {
- std::string datastr;
- leveldb::Status status = m_database->Get(leveldb::ReadOptions(),
- i64tos(getBlockAsInteger(pos)), &datastr);
- *block = (status.ok()) ? datastr : "";
- }
- bool Database_LevelDB::deleteBlock(const v3s16 &pos)
- {
- leveldb::Status status = m_database->Delete(leveldb::WriteOptions(),
- i64tos(getBlockAsInteger(pos)));
- if (!status.ok()) {
- warningstream << "deleteBlock: LevelDB error deleting block "
- << PP(pos) << ": " << status.ToString() << std::endl;
- return false;
- }
- return true;
- }
- void Database_LevelDB::listAllLoadableBlocks(std::vector<v3s16> &dst)
- {
- leveldb::Iterator* it = m_database->NewIterator(leveldb::ReadOptions());
- for (it->SeekToFirst(); it->Valid(); it->Next()) {
- dst.push_back(getIntegerAsBlock(stoi64(it->key().ToString())));
- }
- ENSURE_STATUS_OK(it->status()); // Check for any errors found during the scan
- delete it;
- }
- #endif // USE_LEVELDB
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