diff options
Diffstat (limited to 'src/map.cpp')
| -rw-r--r-- | src/map.cpp | 251 |
1 files changed, 242 insertions, 9 deletions
diff --git a/src/map.cpp b/src/map.cpp index 27a491428..41c4e17d2 100644 --- a/src/map.cpp +++ b/src/map.cpp @@ -29,12 +29,21 @@ with this program; if not, write to the Free Software Foundation, Inc., #include "mapgen.h" #include "nodemetadata.h" -extern "C" { - #include "sqlite3.h" -} /* SQLite format specification: - Initially only replaces sectors/ and sectors2/ + + If map.sqlite does not exist in the save dir + or the block was not found in the database + the map will try to load from sectors folder. + In either case, map.sqlite will be created + and all future saves will save there. + + Structure of map.sqlite: + Tables: + blocks + (PK) INT pos + BLOB data */ /* @@ -1408,6 +1417,8 @@ void Map::timerUpdate(float dtime, float unload_timeout, core::list<MapBlock*> blocks; sector->getBlocks(blocks); + + beginSave(); for(core::list<MapBlock*>::Iterator i = blocks.begin(); i != blocks.end(); i++) { @@ -1440,6 +1451,7 @@ void Map::timerUpdate(float dtime, float unload_timeout, all_blocks_deleted = false; } } + endSave(); if(all_blocks_deleted) { @@ -1873,7 +1885,10 @@ void Map::nodeMetadataStep(float dtime, ServerMap::ServerMap(std::string savedir): Map(dout_server), m_seed(0), - m_map_metadata_changed(true) + m_map_metadata_changed(true), + m_database(NULL), + m_database_read(NULL), + m_database_write(NULL) { dstream<<__FUNCTION_NAME<<std::endl; @@ -1994,6 +2009,16 @@ ServerMap::~ServerMap() <<", exception: "<<e.what()<<std::endl; } + /* + Close database if it was opened + */ + if(m_database_read) + sqlite3_finalize(m_database_read); + if(m_database_write) + sqlite3_finalize(m_database_write); + if(m_database) + sqlite3_close(m_database); + #if 0 /* Free all MapChunks @@ -2307,6 +2332,7 @@ ServerMapSector * ServerMap::createSector(v2s16 p2d) /* Try to load metadata from disk */ +#if 0 if(loadSectorMeta(p2d) == true) { ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d); @@ -2317,7 +2343,7 @@ ServerMapSector * ServerMap::createSector(v2s16 p2d) } return sector; } - +#endif /* Do not create over-limit */ @@ -2759,6 +2785,74 @@ plan_b: //return (s16)level; } +void ServerMap::createDatabase() { + int e; + assert(m_database); + e = sqlite3_exec(m_database, + "CREATE TABLE IF NOT EXISTS `blocks` (" + "`pos` INT NOT NULL PRIMARY KEY," + "`data` BLOB" + ");" + , NULL, NULL, NULL); + if(e == SQLITE_ABORT) + throw FileNotGoodException("Could not create database structure"); + else + dstream<<"Server: Database structure was created"; +} + +void ServerMap::verifyDatabase() { + if(m_database) + return; + + { + std::string dbp = m_savedir + "/map.sqlite"; + bool needs_create = false; + int d; + + /* + Open the database connection + */ + + createDirs(m_savedir); + + if(!fs::PathExists(dbp)) + needs_create = true; + + d = sqlite3_open_v2(dbp.c_str(), &m_database, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL); + if(d != SQLITE_OK) { + dstream<<"WARNING: Database failed to open: "<<sqlite3_errmsg(m_database)<<std::endl; + throw FileNotGoodException("Cannot open database file"); + } + + if(needs_create) + createDatabase(); + + d = sqlite3_prepare(m_database, "SELECT `data` FROM `blocks` WHERE `pos`=? LIMIT 1", -1, &m_database_read, NULL); + if(d != SQLITE_OK) { + dstream<<"WARNING: Database read statment failed to prepare: "<<sqlite3_errmsg(m_database)<<std::endl; + throw FileNotGoodException("Cannot prepare read statement"); + } + + d = sqlite3_prepare(m_database, "REPLACE INTO `blocks` VALUES(?, ?)", -1, &m_database_write, NULL); + if(d != SQLITE_OK) { + dstream<<"WARNING: Database write statment failed to prepare: "<<sqlite3_errmsg(m_database)<<std::endl; + throw FileNotGoodException("Cannot prepare write statement"); + } + + dstream<<"Server: Database opened"<<std::endl; + } +} + +bool ServerMap::loadFromFolders() { + if(!m_database && !fs::PathExists(m_savedir + "/map.sqlite")) + return true; + return false; +} + +int ServerMap::getBlockAsInteger(const v3s16 pos) { + return (pos.Z+2048)*16777216 + (pos.Y+2048)*4096 + pos.X; +} + void ServerMap::createDirs(std::string path) { if(fs::CreateAllDirs(path) == false) @@ -2862,6 +2956,7 @@ void ServerMap::save(bool only_changed) u32 block_count = 0; u32 block_count_all = 0; // Number of blocks in memory + beginSave(); core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator(); for(; i.atEnd() == false; i++) { @@ -2876,6 +2971,8 @@ void ServerMap::save(bool only_changed) core::list<MapBlock*> blocks; sector->getBlocks(blocks); core::list<MapBlock*>::Iterator j; + + //sqlite3_exec(m_database, "BEGIN;", NULL, NULL, NULL); for(j=blocks.begin(); j!=blocks.end(); j++) { MapBlock *block = *j; @@ -2894,8 +2991,10 @@ void ServerMap::save(bool only_changed) <<block->getPos().Z<<")" <<std::endl;*/ } + //sqlite3_exec(m_database, "COMMIT;", NULL, NULL, NULL); } } + endSave(); /* Only print if something happened or saved whole map @@ -3154,6 +3253,18 @@ bool ServerMap::loadSectorFull(v2s16 p2d) } #endif +void ServerMap::beginSave() { + verifyDatabase(); + if(sqlite3_exec(m_database, "BEGIN;", NULL, NULL, NULL) != SQLITE_OK) + dstream<<"WARNING: beginSave() failed, saving might be slow."; +} + +void ServerMap::endSave() { + verifyDatabase(); + if(sqlite3_exec(m_database, "COMMIT;", NULL, NULL, NULL) != SQLITE_OK) + dstream<<"WARNING: endSave() failed, map might not have saved."; +} + void ServerMap::saveBlock(MapBlock *block) { DSTACK(__FUNCTION_NAME); @@ -3173,6 +3284,8 @@ void ServerMap::saveBlock(MapBlock *block) // Get destination v3s16 p3d = block->getPos(); + +#if 0 v2s16 p2d(p3d.X, p3d.Z); std::string sectordir = getSectorDir(p2d); @@ -3182,11 +3295,16 @@ void ServerMap::saveBlock(MapBlock *block) std::ofstream o(fullpath.c_str(), std::ios_base::binary); if(o.good() == false) throw FileNotGoodException("Cannot open block data"); - +#endif /* [0] u8 serialization version [1] data */ + + verifyDatabase(); + + std::ostringstream o(std::ios_base::binary); + o.write((char*)&version, 1); // Write basic data @@ -3194,7 +3312,23 @@ void ServerMap::saveBlock(MapBlock *block) // Write extra data stored on disk block->serializeDiskExtra(o, version); - + + // Write block to database + + std::string tmp = o.str(); + const char *bytes = tmp.c_str(); + + if(sqlite3_bind_int(m_database_write, 1, getBlockAsInteger(p3d)) != SQLITE_OK) + dstream<<"WARNING: Block position failed to bind: "<<sqlite3_errmsg(m_database)<<std::endl; + if(sqlite3_bind_blob(m_database_write, 2, (void *)bytes, o.tellp(), NULL) != SQLITE_OK) // TODO this mught not be the right length + dstream<<"WARNING: Block data failed to bind: "<<sqlite3_errmsg(m_database)<<std::endl; + int written = sqlite3_step(m_database_write); + if(written != SQLITE_DONE) + dstream<<"WARNING: Block failed to save ("<<p3d.X<<", "<<p3d.Y<<", "<<p3d.Z<<") " + <<sqlite3_errmsg(m_database)<<std::endl; + // Make ready for later reuse + sqlite3_reset(m_database_write); + // We just wrote it to the disk so clear modified flag block->resetModified(); } @@ -3275,12 +3409,111 @@ void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSecto } } +void ServerMap::loadBlock(std::string *blob, v3s16 p3d, MapSector *sector, bool save_after_load) +{ + DSTACK(__FUNCTION_NAME); + + try { + std::istringstream is(*blob, std::ios_base::binary); + + u8 version = SER_FMT_VER_INVALID; + is.read((char*)&version, 1); + + if(is.fail()) + throw SerializationError("ServerMap::loadBlock(): Failed" + " to read MapBlock version"); + + /*u32 block_size = MapBlock::serializedLength(version); + SharedBuffer<u8> data(block_size); + is.read((char*)*data, block_size);*/ + + // This will always return a sector because we're the server + //MapSector *sector = emergeSector(p2d); + + MapBlock *block = NULL; + bool created_new = false; + block = sector->getBlockNoCreateNoEx(p3d.Y); + if(block == NULL) + { + block = sector->createBlankBlockNoInsert(p3d.Y); + created_new = true; + } + + // Read basic data + block->deSerialize(is, version); + + // Read extra data stored on disk + block->deSerializeDiskExtra(is, version); + + // If it's a new block, insert it to the map + if(created_new) + sector->insertBlock(block); + + /* + Save blocks loaded in old format in new format + */ + + if(version < SER_FMT_VER_HIGHEST || save_after_load) + { + saveBlock(block); + } + + // We just loaded it from, so it's up-to-date. + block->resetModified(); + + } + catch(SerializationError &e) + { + dstream<<"WARNING: Invalid block data in database " + <<" (SerializationError). " + <<"what()="<<e.what() + <<std::endl; + //" Ignoring. A new one will be generated. + assert(0); + + // TODO: Copy to a backup database. + } +} + MapBlock* ServerMap::loadBlock(v3s16 blockpos) { DSTACK(__FUNCTION_NAME); v2s16 p2d(blockpos.X, blockpos.Z); + if(!loadFromFolders()) { + verifyDatabase(); + + if(sqlite3_bind_int(m_database_read, 1, getBlockAsInteger(blockpos)) != SQLITE_OK) + dstream<<"WARNING: Could not bind block position for load: " + <<sqlite3_errmsg(m_database)<<std::endl; + if(sqlite3_step(m_database_read) == SQLITE_ROW) { + /* + Make sure sector is loaded + */ + MapSector *sector = createSector(p2d); + + /* + Load block + */ + const char * data = (const char *)sqlite3_column_blob(m_database_read, 0); + size_t len = sqlite3_column_bytes(m_database_read, 0); + + std::string datastr(data, len); + + loadBlock(&datastr, blockpos, sector, false); + + sqlite3_step(m_database_read); + // We should never get more than 1 row, so ok to reset + sqlite3_reset(m_database_read); + + return getBlockNoCreateNoEx(blockpos); + } + sqlite3_reset(m_database_read); + + // Not found in database, try the files + } + // The directory layout we're going to load from. // 1 - original sectors/xxxxzzzz/ // 2 - new sectors2/xxx/zzz/ @@ -3331,9 +3564,9 @@ MapBlock* ServerMap::loadBlock(v3s16 blockpos) return NULL; /* - Load block + Load block and save it to the database */ - loadBlock(sectordir, blockfilename, sector, loadlayout != 2); + loadBlock(sectordir, blockfilename, sector, true); return getBlockNoCreateNoEx(blockpos); } |