bool Cache::store() {
if(!initialized_)
return false;
std::string dir = getCurrentCacheDir();
if (!FileSys.dirExists(dir)) {
if(!FileSys.createDirectoryRecursive(dir))
return false;
//write property state:
std::string propertyState = getPropertyState();
std::string fname = dir + "/propertystate.txt";
std::fstream out(fname.c_str(), std::ios::out | std::ios::binary);
if (out.is_open() || !out.bad()) {
out.write(propertyState.c_str(), propertyState.length());
}
else {
LERROR("Could not write propertystate file!");
FileSys.deleteDirectoryRecursive(dir);
return false;
}
out.close();
return storeOutportsToDir(dir);
}
else {
std::string fname = dir + "/propertystate.txt";
if(FileSys.fileExists(fname)) {
std::string propertyState = getPropertyState();
if(stringEqualsFileContent(propertyState, fname))
return true;
else {
LWARNING("PropertyState Collision! Deleting cache entry.");
FileSys.deleteDirectoryRecursive(dir);
return storeOutportsToDir(dir);
}
}
else {
LWARNING("No PropertyState in cache entry! Deleting.");
FileSys.deleteDirectoryRecursive(dir);
return storeOutportsToDir(dir);
}
}
}
bool Cache::writePropertyState(std::string dir) {
//write property state:
std::string propertyState = getPropertyState();
std::string fname = dir + "/propertystate.txt";
std::fstream out(fname.c_str(), std::ios::out | std::ios::binary);
if (out.is_open() || !out.bad())
out.write(propertyState.c_str(), propertyState.length());
else
return false;
out.close();
return true;
}
bool Cache::restore() {
if(!initialized_)
return false;
//check for collisions
std::string dir = getCurrentCacheDir();
if(FileSys.dirExists(dir)) {
std::string fname = dir + "/propertystate.txt";
if(!FileSys.fileExists(fname))
return false;
std::string propertyState = getPropertyState();
if(stringEqualsFileContent(propertyState, fname))
return restoreOutportsFromDir(dir);
else {
LWARNING("PropertyState Collision! Deleting cache entry.");
FileSys.deleteDirectoryRecursive(dir);
return false;
}
}
else
return false;
}
std::string Cache::getPropertyStateHash() {
return VoreenHash::getHash(getPropertyState());
}