private string getDataDir(DataBaseConfig config)
{
if (config.getTestnet())
{
return(config.getDataDir() + '/' + GlobalMembers.TESTNET_DB_NAME);
}
else
{
return(config.getDataDir() + '/' + GlobalMembers.DB_NAME);
}
}
private rocksdb.Options getDBOptions(DataBaseConfig config)
{
rocksdb.DBOptions dbOptions = new rocksdb.DBOptions();
dbOptions.IncreaseParallelism(config.getBackgroundThreadsCount());
dbOptions.info_log_level = rocksdb.InfoLogLevel.WARN_LEVEL;
dbOptions.max_open_files = config.getMaxOpenFiles();
rocksdb.ColumnFamilyOptions fOptions = new rocksdb.ColumnFamilyOptions();
//C++ TO C# CONVERTER TODO TASK: The following line was determined to be a copy assignment (rather than a reference assignment) - this should be verified and a 'CopyFrom' method should be created:
//ORIGINAL LINE: fOptions.write_buffer_size = static_cast<uint>(config.getWriteBufferSize());
fOptions.write_buffer_size.CopyFrom((uint)config.getWriteBufferSize());
// merge two memtables when flushing to L0
fOptions.min_write_buffer_number_to_merge = 2;
// this means we'll use 50% extra memory in the worst case, but will reduce
// write stalls.
fOptions.max_write_buffer_number = 6;
// start flushing L0->L1 as soon as possible. each file on level0 is
// (memtable_memory_budget / 2). This will flush level 0 when it's bigger than
// memtable_memory_budget.
fOptions.level0_file_num_compaction_trigger = 20;
fOptions.level0_slowdown_writes_trigger = 30;
fOptions.level0_stop_writes_trigger = 40;
// doesn't really matter much, but we don't want to create too many files
//C++ TO C# CONVERTER TODO TASK: The following line was determined to be a copy assignment (rather than a reference assignment) - this should be verified and a 'CopyFrom' method should be created:
//ORIGINAL LINE: fOptions.target_file_size_base = config.getWriteBufferSize() / 10;
fOptions.target_file_size_base.CopyFrom(config.getWriteBufferSize() / 10);
// make Level1 size equal to Level0 size, so that L0->L1 compactions are fast
//C++ TO C# CONVERTER TODO TASK: The following line was determined to be a copy assignment (rather than a reference assignment) - this should be verified and a 'CopyFrom' method should be created:
//ORIGINAL LINE: fOptions.max_bytes_for_level_base = config.getWriteBufferSize();
fOptions.max_bytes_for_level_base.CopyFrom(config.getWriteBufferSize());
fOptions.num_levels = 10;
fOptions.target_file_size_multiplier = 2;
// level style compaction
fOptions.compaction_style = rocksdb.CompactionStyle.kCompactionStyleLevel;
fOptions.compression_per_level.Resize(fOptions.num_levels);
for (int i = 0; i < fOptions.num_levels; ++i)
{
fOptions.compression_per_level[i] = rocksdb.CompressionType.kNoCompression;
}
rocksdb.BlockBasedTableOptions tableOptions = new rocksdb.BlockBasedTableOptions();
tableOptions.block_cache = rocksdb.NewLRUCache(config.getReadCacheSize());
rocksdb.TableFactory tfp = new rocksdb.TableFactory(NewBlockBasedTableFactory(tableOptions));
fOptions.table_factory = tfp;
return(new rocksdb.Options(dbOptions, fOptions));
}
//C++ TO C# CONVERTER TODO TASK: C# has no equivalent to ' = delete':
// RocksDBWrapper(const RocksDBWrapper&) = delete;
//C++ TO C# CONVERTER TODO TASK: C# has no equivalent to ' = delete':
// RocksDBWrapper(RocksDBWrapper&&) = delete;
//C++ TO C# CONVERTER TODO TASK: C# has no equivalent to ' = delete':
// RocksDBWrapper& operator =(const RocksDBWrapper&) = delete;
//C++ TO C# CONVERTER TODO TASK: C# has no equivalent to ' = delete':
// RocksDBWrapper& operator =(RocksDBWrapper&&) = delete;
public void init(DataBaseConfig config)
{
if (state.load() != State.NOT_INITIALIZED)
{
throw std::system_error(GlobalMembers.make_error_code(CryptoNote.error.DataBaseErrorCodes.ALREADY_INITIALIZED));
}
string dataDir = getDataDir(config);
logger(INFO) << "Opening DB in " << dataDir;
rocksdb.DB dbPtr;
rocksdb.Options dbOptions = getDBOptions(config);
rocksdb.Status status = rocksdb.DB.Open(dbOptions, dataDir, dbPtr);
if (status.ok())
{
logger(INFO) << "DB opened in " << dataDir;
}
else if (!status.ok() && status.IsInvalidArgument())
{
logger(INFO) << "DB not found in " << dataDir << ". Creating new DB...";
dbOptions.create_if_missing = true;
rocksdb.Status status = rocksdb.DB.Open(dbOptions, dataDir, dbPtr);
if (!status.ok())
{
logger(ERROR) << "DB Error. DB can't be created in " << dataDir << ". Error: " << status.ToString();
throw std::system_error(GlobalMembers.make_error_code(CryptoNote.error.DataBaseErrorCodes.INTERNAL_ERROR));
}
}
else if (status.IsIOError())
{
logger(ERROR) << "DB Error. DB can't be opened in " << dataDir << ". Error: " << status.ToString();
throw std::system_error(GlobalMembers.make_error_code(CryptoNote.error.DataBaseErrorCodes.IO_ERROR));
}
else
{
logger(ERROR) << "DB Error. DB can't be opened in " << dataDir << ". Error: " << status.ToString();
throw std::system_error(GlobalMembers.make_error_code(CryptoNote.error.DataBaseErrorCodes.INTERNAL_ERROR));
}
db.reset(dbPtr);
state.store(State.INITIALIZED);
}
public void destroy(DataBaseConfig config)
{
if (state.load() != State.NOT_INITIALIZED)
{
throw std::system_error(GlobalMembers.make_error_code(CryptoNote.error.DataBaseErrorCodes.ALREADY_INITIALIZED));
}
string dataDir = getDataDir(config);
logger(WARNING) << "Destroying DB in " << dataDir;
rocksdb.Options dbOptions = getDBOptions(config);
rocksdb.Status status = rocksdb.DestroyDB(dataDir, dbOptions);
if (status.ok())
{
logger(WARNING) << "DB destroyed in " << dataDir;
}
else
{
logger(ERROR) << "DB Error. DB can't be destroyed in " << dataDir << ". Error: " << status.ToString();
throw std::system_error(GlobalMembers.make_error_code(CryptoNote.error.DataBaseErrorCodes.INTERNAL_ERROR));
}
}