public void CreateStore()
{
var layers = new MemoryMappedFileSlim[_storesPath.Length];
for (var i = 0; i < _storesPath.Length; ++i)
{
layers[i] = new MemoryMappedFileSlim(_storesPath[i], _sectorsSize[i] * 64);
}
var journal = new MemoryMappedFileSlim(_journalPath, Constants.CoinStoreJournalCapacity);
_store = new PackStore(64, _sectorsSize, layers, journal, _genericStore);
_store.Initialize();
}
public void SetupStores(CashDBConfig config)
{
var secretPath = Path.Combine(config.Layer1Path, "secret.dat");
var secretStore = new MemoryMappedFileSlim(secretPath);
var secretSpan = secretStore.GetSpan(0, Constants.SecretStoreFileSize);
// HACK: secret initialization (would be better isolated)
if (secretSpan.ToArray().All(b => b == 0))
{
var rng = RandomNumberGenerator.Create();
rng.GetBytes(secretSpan);
}
OutpointHash = new SipHash(secretSpan);
var chainPath = Path.Combine(config.Layer1Path, "chains.dat");
ChainStore = new ChainStore(new MemoryMappedFileSlim(chainPath), _log);
ChainStore.Initialize();
CoinStores = new ICoinStore[Constants.CoinControllerCount];
for (var i = 0; i < Constants.CoinControllerCount; i++)
{
var journalPath = Path.Combine(config.Layer1Path, $"coins-journal-{i:x2}.dat");
var journalFile = new MemoryMappedFileSlim(journalPath);
var layer1CoinStorePath = Path.Combine(config.Layer1Path, $"coins-1-{i:x2}.dat");
var layer1File = new MemoryMappedFileSlim(layer1CoinStorePath);
var sectorCount = (int)(layer1File.FileLength / Constants.CoinStoreLayer1SectorSize);
// Last layer used for key-value store.
IKeyValueStore <uint> kvStore = null;
if (!string.IsNullOrEmpty(config.Layer3Path))
{
var layer3CoinStorePath = Path.Combine(config.Layer3Path, $"coins-3-{i:x2}.dat");
kvStore = new LightningStore <uint>(layer3CoinStorePath, "coins");
}
IPackStore packStore;
if (string.IsNullOrEmpty(config.Layer2Path))
{
// Layer 2 is omitted
packStore = new PackStore(
sectorCount,
new[] { Constants.CoinStoreLayer1SectorSize },
new[] { layer1File },
journalFile,
kvStore,
_log);
}
else
{
// Layer 2 is included
var layer2CoinStorePath = Path.Combine(config.Layer2Path, $"coins-2-{i:x2}.dat");
var layer2File = new MemoryMappedFileSlim(layer2CoinStorePath);
// Sector size on layer 2 is inferred from the sector count on layer 1.
if (layer2File.FileLength % sectorCount != 0)
{
throw new InvalidOperationException("Mismatch between sector counts across layers.");
}
var coinStoreLayer1SectorSize = (int)(layer2File.FileLength / sectorCount);
packStore = new PackStore(
sectorCount,
new[] { Constants.CoinStoreLayer1SectorSize, coinStoreLayer1SectorSize },
new[] { layer1File, layer2File },
journalFile,
kvStore,
_log);
}
packStore.Initialize();
CoinStores[i] = new SozuTable(packStore, OutpointHash);
}
_log?.Log(LogSeverity.Info, "CashDB store initialization completed successfully.");
}
