bool CMasternodeDB::Write(const CMasternodeMan& mnodemanToSave)
{
int64_t nStart = GetTimeMillis();
// serialize addresses, checksum data up to that point, then append csum
CDataStream ssMasternodes(SER_DISK, CLIENT_VERSION);
ssMasternodes << FLATDATA(Params().MessageStart());
ssMasternodes << mnodemanToSave;
uint256 hash = Hash(ssMasternodes.begin(), ssMasternodes.end());
ssMasternodes << hash;
// open output file, and associate with CAutoFile
FILE *file = fopen(pathMN.string().c_str(), "wb");
CAutoFile fileout = CAutoFile(file, SER_DISK, CLIENT_VERSION);
if (!fileout)
return error("%s : Failed to open file %s", __func__, pathMN.string());
// Write and commit header, data
try {
fileout << ssMasternodes;
}
catch (std::exception &e) {
return error("%s : Serialize or I/O error - %s", __func__, e.what());
}
FileCommit(fileout);
fileout.fclose();
LogPrintf("Written info to mncache.dat %dms\n", GetTimeMillis() - nStart);
LogPrintf(" %s\n", mnodemanToSave.ToString());
return true;
}
void CMempoolComponent::DumpMempool(void)
{
int64_t start = GetTimeMicros();
std::map<uint256, CAmount> mapDeltas;
std::vector<TxMempoolInfo> vinfo;
{
LOCK(cs);
for (const auto &i : mempool.mapDeltas)
{
mapDeltas[i.first] = i.second;
}
vinfo = mempool.infoAll();
}
int64_t mid = GetTimeMicros();
try
{
FILE *filestr = fsbridge::fopen(Args().GetDataDir() / "mempool.dat.new", "wb");
if (!filestr)
{
return;
}
CAutoFile file(filestr, SER_DISK, CLIENT_VERSION);
uint64_t version = MEMPOOL_DUMP_VERSION;
file << version;
file << (uint64_t)vinfo.size();
for (const auto &i : vinfo)
{
file << *(i.tx);
file << (int64_t)i.nTime;
file << (int64_t)i.nFeeDelta;
mapDeltas.erase(i.tx->GetHash());
}
file << mapDeltas;
FileCommit(file.Get());
file.fclose();
RenameOver(Args().GetDataDir() / "mempool.dat.new", Args().GetDataDir() / "mempool.dat");
int64_t last = GetTimeMicros();
NLogFormat("Dumped mempool: %gs to copy, %gs to dump", (mid - start) * 0.000001, (last - mid) * 0.000001);
} catch (const std::exception &e)
{
ELogFormat("Failed to dump mempool: %s. Continuing anyway", e.what());
}
}
bool CBanDB::Write(const banmap_t& banSet)
{
// Generate random temporary filename
unsigned short randv = 0;
GetRandBytes((unsigned char*)&randv, sizeof(randv));
std::string tmpfn = strprintf("banlist.dat.%04x", randv);
// serialize banlist, checksum data up to that point, then append csum
CDataStream ssBanlist(SER_DISK, CLIENT_VERSION);
ssBanlist << FLATDATA(Params().MessageStart());
ssBanlist << banSet;
uint256 hash = Hash(ssBanlist.begin(), ssBanlist.end());
ssBanlist << hash;
// open temp output file, and associate with CAutoFile
boost::filesystem::path pathTmp = GetDataDir() / tmpfn;
FILE *file = fopen(pathTmp.string().c_str(), "wb");
CAutoFile fileout(file, SER_DISK, CLIENT_VERSION);
if (fileout.IsNull())
return error("%s: Failed to open file %s", __func__, pathTmp.string());
// Write and commit header, data
try {
fileout << ssBanlist;
}
catch (const std::exception& e) {
return error("%s: Serialize or I/O error - %s", __func__, e.what());
}
FileCommit(fileout.Get());
fileout.fclose();
// replace existing banlist.dat, if any, with new banlist.dat.XXXX
if (!RenameOver(pathTmp, pathBanlist))
return error("%s: Rename-into-place failed", __func__);
return true;
}
