public SozuFactory(ILineage lineage,
Hash256 start, Hash256 end, SozuFactoryConfig[] sozuFactoryConfig,
string path)
{
_lineage = lineage;
_start = start;
_end = end;
_sozuFactoryConfig = sozuFactoryConfig;
_path = path;
}
public CoinChangeStatus Remove(ulong outpointHash, ref Outpoint outpoint, BlockAlias context, CoinRemoveOption option,
ILineage lineage)
{
if (!_coins.TryGetValue(outpoint, out var fatCoin))
{
return(CoinChangeStatus.OutpointNotFound);
}
fatCoin.Events.RemoveAll(ev => ev.BlockAlias == context &&
(((option & CoinRemoveOption.RemoveProduction) != 0 &&
ev.Kind == CoinEventKind.Production) ||
((option & CoinRemoveOption.RemoveConsumption) != 0 &&
ev.Kind == CoinEventKind.Consumption)));
return(CoinChangeStatus.Success);
}
public CoinChangeStatus AddConsumption(ulong outpointHash, ref Outpoint outpoint, BlockAlias context,
ILineage lineage)
{
if (!_coins.TryGetValue(outpoint, out var fatCoin))
{
return(CoinChangeStatus.OutpointNotFound);
}
var consumption = new CoinEvent(context, CoinEventKind.Consumption);
if (fatCoin.Events.Contains(consumption))
{
return(CoinChangeStatus.Success);
}
fatCoin.Events.Add(consumption);
return(CoinChangeStatus.Success);
}
/// <param name="config"></param>
/// <param name="lineage"></param>
/// <param name="store"></param>
/// <param name="subTable"></param>
public SozuTable(SozuConfig config, ILineage lineage, ISectorStore store, SozuTable subTable = null)
{
_config = config;
_lineage = lineage;
_store = store;
_subTable = subTable;
_residue = TxoPack.Create();
_rangeOutputs = TxoPack.Create();
_deserialized = TxoPack.Create();
_complement = TxoPack.Create();
_kept = TxoPack.Create();
_flowDown = TxoPack.Create();
_merged = TxoPack.Create(2);
store.Initialize();
if (config.ImplicitSectors && !store.HasSectors())
{
store.AllocateSectors(1 << config.SectorBitDepth);
EnsurePersistence();
}
}
public CoinChangeStatus AddProduction(ulong outpointHash, ref Outpoint outpoint, bool isCoinBase, Payload payload,
BlockAlias context, ILineage lineage)
{
var production = new CoinEvent(context, CoinEventKind.Production);
if (_coins.TryGetValue(outpoint, out var fatCoin))
{
if (fatCoin.Events.Contains(production))
{
return(CoinChangeStatus.Success); // done
}
fatCoin.Events.Add(production);
return(CoinChangeStatus.Success);
}
var coin = new Coin(ref outpoint, isCoinBase, payload, production, _pool);
_coins.Add(outpoint, new FatCoin(coin, production));
return(CoinChangeStatus.Success);
}
// HACK: [vermorel] Constructor used as the setup of the unit tests, should be refactored.
public LineageTests()
{
var store = new VolatileChainStore();
//var chain = new SimpleBlockchain();
store.TryOpenBlock(CommittedBlockId.GenesisParent, out var b0);
var id = b0.Alias;
// U(0)
store.TryCommitBlock(id, CommittedBlockId.Genesis, out _);
// C(0)
store.TryOpenBlock(CommittedBlockId.Genesis, out var b1);
Assert.Equal(_1, b1.Alias);
// C(0) -> U(1)
store.TryCommitBlock(_1, _id_1, out _);
// C(0) -> C(1)
store.TryOpenBlock(_id_1, out var b2);
Assert.Equal(_2_0, b2.Alias);
// C(0) -> C(1) -> U(2)
store.TryCommitBlock(_2_0, _id_2_0, out _);
// C(0) -> C(1) -> C(2)
// Second child for second block
store.TryOpenBlock(_id_1, out var b21);
Assert.Equal(_2_1, b21.Alias);
// C(0) -> C(1) -> C(2)
// \-> U(2-1)
store.TryCommitBlock(_2_1, _id_2_1, out _);
// C(0) -> C(1) -> C(2)
// \-> C(2-1)
var lineage = (Lineage)store.GetLineage();
lineage.CoinPruneHeight = _1.BlockHeight;
_lineage = lineage;
}
public CoinChangeStatus AddProduction(
ulong outpointHash,
ref Outpoint outpoint,
bool isCoinBase,
Payload payload,
BlockAlias context,
ILineage lineage)
{
try
{
var sectorIndex = (uint)(outpointHash % (uint)_store.SectorCount);
var sig = OutpointSig.From(outpointHash);
var evt = new CoinEvent(context, CoinEventKind.Production);
// Oversized payload, insert in the last layer directly.
if (payload.SizeInBytes > PayloadOversizeInBytes)
{
// HACK: [vermorel] edge-case, is-it possible to have an oversized coinbase?
return(AddOversizedProduction(sectorIndex, sig, ref outpoint, isCoinBase, payload, evt, lineage));
}
// Layer 0, the only layer to have outpoint signatures.
var pack0 = _store.Read(layerIndex: 0, sectorIndex);
var extendedPack = CoinPack.Empty;
// The coin already exists on another chain.
if (pack0.TryGet(ref outpoint, out var coin, out var coinOffset))
{
if (coin.HasEvent(evt))
{
return(CoinChangeStatus.Success);
}
if (!lineage.IsAddConsistent(coin.Events, evt))
{
return(CoinChangeStatus.InvalidContext);
}
// HACK: [vermorel] edge-case, is-it possible to have the same coinbase on multiple chains?
extendedPack = CoinPack.WithExtraCoinEvent(pack0, coin, coinOffset, evt, _pool);
}
// A probabilistic match exists, checking deeper layers.
else if (pack0.PositiveMatch(sig))
{
for (var layerIndex = 1; layerIndex < _store.LayerCount; layerIndex++)
{
// Check deeper layers
var packN = _store.Read(layerIndex: layerIndex, sectorIndex);
if (packN.TryGet(ref outpoint, out coin, out coinOffset))
{
if (coin.HasEvent(evt))
{
return(CoinChangeStatus.Success);
}
if (!lineage.IsAddConsistent(coin.Events, evt))
{
return(CoinChangeStatus.InvalidContext);
}
extendedPack = CoinPack.WithExtraCoinEvent(packN, coin, coinOffset, evt, _pool);
break;
}
// False-positive match, adding the coin as new in layer 0.
if (layerIndex == _store.LayerCount - 1)
{
var newCoin = new Coin(ref outpoint, isCoinBase, payload, evt, _pool);
extendedPack = CoinPack.WithExtraCoin(pack0, newCoin, _pool);
}
}
// 'for' loop above should not exit without assigned a value to 'extendedPack'.
Debug.Assert(!extendedPack.IsEmpty);
}
else // The coin does not exist on any chain.
{
var newCoin = new Coin(ref outpoint, isCoinBase, payload, evt, _pool);
extendedPack = CoinPack.WithExtraCoin(pack0, newCoin, _pool);
}
// Check of overflow
var packs = extendedPack.SizeInBytes < _store.SectorSizeInBytes[extendedPack.LayerIndex]
? new ShortCoinPackCollection(extendedPack)
: GetOverflow(extendedPack, lineage, _hash);
// Persist the pack(s), several coin packs in case of overflow.
_store.Write(packs);
return(CoinChangeStatus.Success);
}
public bool TryGet(ulong outpointHash, ref Outpoint outpoint, BlockAlias context, ILineage lineage,
out Coin coin, out BlockAlias production, out BlockAlias consumption)
{
var sectorIndex = (uint)(outpointHash % (uint)_store.SectorCount);
production = BlockAlias.Undefined;
consumption = BlockAlias.Undefined;
// Check layer 0.
var pack0 = _store.Read(layerIndex: 0, sectorIndex);
if (pack0.TryGet(ref outpoint, out coin))
{
return(lineage.TryGetEventsInContext(coin.Events, context, out production, out consumption));
}
var sig = OutpointSig.From(outpointHash);
// Layer 0 has a probabilistic filter. No false negative are possible.
if (!pack0.PositiveMatch(sig))
{
return(false);
}
// Check next layers.
for (var layerIndex = 1; layerIndex < _store.LayerCount; layerIndex++)
{
var packN = _store.Read(layerIndex: layerIndex, sectorIndex);
if (packN.TryGet(ref outpoint, out coin))
{
return(lineage.TryGetEventsInContext(coin.Events, context, out production, out consumption));
}
}
// Not found, it was a false positive on the probabilistic filter.
return(false);
}
// HACK: [vermorel] Constructor used as the setup of the unit tests, should be refactored.
public LineagePruneTests()
{
var store = new VolatileChainStore();
UncommittedBlock freshBlock;
store.TryOpenBlock(CommittedBlockId.GenesisParent, out var b0);
var id = b0.Alias;
// U(0)
store.TryCommitBlock(id, CommittedBlockId.Genesis, out _);
// C(0)
store.TryOpenBlock(CommittedBlockId.Genesis, out freshBlock);
Assert.Equal(_1, freshBlock.Alias);
// C(0) -> U(1)
store.TryCommitBlock(_1, _id_1, out _);
// C(0) -> C(1)
store.TryOpenBlock(_id_1, out freshBlock);
Assert.Equal(_2, freshBlock.Alias);
// C(0) -> C(1) -> U(2)
store.TryCommitBlock(_2, _id_2, out _);
// C(0) -> C(1) -> C(2)
// Second child for second block
store.TryOpenBlock(_id_1, out freshBlock);
Assert.Equal(_2_1, freshBlock.Alias);
// C(0) -> C(1) -> C(2)
// \-> U(2-1)
store.TryCommitBlock(_2_1, _id_2_1, out _);
// C(0) -> C(1) -> C(2)
// \-> C(2-1)
store.TryOpenBlock(_id_2, out freshBlock);
Assert.Equal(_3, freshBlock.Alias);
store.TryCommitBlock(_3, _id_3, out _);
store.TryOpenBlock(_id_2_1, out freshBlock);
Assert.Equal(_3_1, freshBlock.Alias);
store.TryCommitBlock(_3_1, _id_3_1, out _);
// C(0) -> C(1) -> C(2) -> C(3)
// \-> C(2-1) -> C(3-1)
store.TryOpenBlock(_id_3_1, out freshBlock);
Assert.Equal(_4, freshBlock.Alias);
store.TryCommitBlock(_4, _id_4, out _);
store.TryOpenBlock(_id_4, out freshBlock);
Assert.Equal(_5, freshBlock.Alias);
store.TryCommitBlock(_5, _id_5, out _);
store.TryOpenBlock(_id_4, out freshBlock);
Assert.Equal(_5_1, freshBlock.Alias);
store.TryCommitBlock(_5_1, _id_5_1, out _);
// C(0) -> C(1) -> C(2) -> C(3)
// \-> C(2-1) -> C(3-1) -> C(4) -> C(5)
// \ -> C(5-1)
// pruning limit is _3_1
var lineage = (Lineage)store.GetLineage();
lineage.CoinPruneHeight = _3_1.BlockHeight;
_lineage = lineage;
}
private void RefreshAndPropagateLineage()
{
_lineage = _store.GetLineage();
_propagateLineage(_lineage);
}
public bool TryGet(ulong outpointHash, ref Outpoint outpoint, BlockAlias context, ILineage lineage, out Coin coin,
out BlockAlias production, out BlockAlias consumption)
{
production = BlockAlias.Undefined;
consumption = BlockAlias.Undefined;
if (_coins.TryGetValue(outpoint, out var fatCoin))
{
foreach (var ev in fatCoin.Events)
{
if (ev.Kind == CoinEventKind.Production)
{
production = ev.BlockAlias;
}
if (ev.Kind == CoinEventKind.Consumption)
{
consumption = ev.BlockAlias;
}
}
if (lineage == null || lineage.TryGetEventsInContext(fatCoin.Events.ToArray(), context, out production, out consumption))
{
coin = fatCoin.Coin;
return(true);
}
}
coin = Coin.Empty;
return(false);
}