Task <BlockData> LoadBlock(long blockid)
{
BlockData result = null;
try
{
if (blockid >= Protocol.GenesisBlockId)
{
var sliceIndex = BlockSliceInfo.GetSliceIndex(blockid);
var blockStorage = _blocksStorage.Get(sliceIndex);
if (blockStorage == null)
{
blockStorage = new BlockDiscStorage(_storage, ChainType, ChainId, ChainIndex, sliceIndex, true);
if (blockStorage.Length > 0)
{
_blocksStorage.Add(sliceIndex, blockStorage);
}
}
if (blockStorage.Length > 0)
{
var blockData = blockStorage.GetBlockData(blockid);
if (blockData != null)
{
result = BlockData.Restore(blockData);
_blockData.Add(blockid, result);
}
}
}
}
catch (Exception ex)
{
Log.HandleException(ex, this);
}
return(Task.FromResult(result));
}
public async Task <BlockConsumeResult> StoreBlock(BlockData blockData)
{
var block = blockData.Block;
lock (_lock)
{
if (!_active)
{
return(BlockConsumeResult.NotActive);
}
}
await _consuming.WaitAsync();
var next = LastStoredBlockId + 1;
if (block.BlockId > next)
{
_consuming.Release();
return(BlockConsumeResult.SyncRequired);
}
if (block.BlockId < next)
{
lock (_lock)
{
if (_blockSlices.Count > 0)
{
if (block.BlockId != (next - 1))
{
_consuming.Release();
return(BlockConsumeResult.MissingBlock);
}
}
}
}
if (block.BlockId < next)
{
_consuming.Release();
return(BlockConsumeResult.Ok);
}
if (LastBlock != null)
{
if (block.PreviousBlockHash != LastBlock.BlockHash)
{
_consuming.Release();
return(BlockConsumeResult.InvalidHash);
}
}
var sliceIndex = BlockSliceInfo.GetSliceIndex(block.BlockId);
if (_blockDiscStorage == null)
{
_blockDiscStorage = new BlockDiscStorage(_storage, ChainType, ChainId, ChainIndex, sliceIndex, false);
}
if (sliceIndex != _blockDiscStorage.SliceIndex)
{
_blockDiscStorage.Dispose();
DiscStorage.BuildChecksum(_storage, Path.Combine(_blocksPath, _blockDiscStorage.SliceIndex.ToString()));
_blockDiscStorage = new BlockDiscStorage(_storage, ChainType, ChainId, ChainIndex, sliceIndex, false);
}
_blockDiscStorage.AddEntry(block.BlockId, blockData.ToByteArray());
_blockDiscStorage.Commit();
_blockData.Add(block.BlockId, blockData);
lock (_lock)
{
if (_blockSlices.TryGetValue(sliceIndex, out var blockStorageInfo))
{
blockStorageInfo.LastBlockId = block.BlockId;
}
else
{
blockStorageInfo = new BlockSliceInfo(sliceIndex)
{
FirstBlockId = block.BlockId,
LastBlockId = block.BlockId
};
_blockSlices.Add(sliceIndex, blockStorageInfo);
}
}
if (!await History.Update(blockData))
{
await History.Init(blockData);
}
lock (_lock)
{
LastBlock = block;
LastBlockData = blockData;
}
_consuming.Release();
return(BlockConsumeResult.Ok);
}