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Allow an optional readonly base database (#7544)

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* Allow an optional readonly base database

* Added basic documentation
This commit is contained in:
lhofhansl
2018-07-25 17:54:23 +02:00
committed by GitHub
parent 9537cfd3f8
commit 7454deb1bf
3 changed files with 23 additions and 3 deletions
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14
src/map.cpp
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@@ -1159,7 +1159,10 @@ ServerMap::ServerMap(const std::string &savedir, IGameDef *gamedef,
}
std::string backend = conf.get("backend");
dbase = createDatabase(backend, savedir, conf);
if (conf.exists("readonly_backend")) {
std::string readonly_dir = savedir + DIR_DELIM + "readonly";
dbase_ro = createDatabase(conf.get("readonly_backend"), readonly_dir, conf);
}
if (!conf.updateConfigFile(conf_path.c_str()))
errorstream << "ServerMap::ServerMap(): Failed to update world.mt!" << std::endl;
@@ -1230,6 +1233,8 @@ ServerMap::~ServerMap()
Close database if it was opened
*/
delete dbase;
if (dbase_ro)
delete dbase_ro;
#if 0
/*
@@ -1869,6 +1874,8 @@ void ServerMap::listAllLoadableBlocks(std::vector<v3s16> &dst)
<< "all blocks that are stored in flat files." << std::endl;
}
dbase->listAllLoadableBlocks(dst);
if (dbase_ro)
dbase_ro->listAllLoadableBlocks(dst);
}
void ServerMap::listAllLoadedBlocks(std::vector<v3s16> &dst)
@@ -2107,6 +2114,11 @@ MapBlock* ServerMap::loadBlock(v3s16 blockpos)
dbase->loadBlock(blockpos, &ret);
if (!ret.empty()) {
loadBlock(&ret, blockpos, createSector(p2d), false);
} else if (dbase_ro) {
dbase_ro->loadBlock(blockpos, &ret);
if (!ret.empty()) {
loadBlock(&ret, blockpos, createSector(p2d), false);
}
} else {
// Not found in database, try the files