public BlockchainTree GetLongestBlockchain()
{
return(_cache.GetOrCreate(CacheKeys.LongestBlockchain, entry =>
{
var blockchainTree = GetBlockchainTree();
if (blockchainTree?.Blocks == null)
{
return null;
}
var blockchain = new BlockchainTree {
Blocks = new List <BlockBase>()
};
BlockBase block = null;
do
{
block = block == null
? blockchainTree.Blocks.OrderByDescending(b => b.Depth).FirstOrDefault()
: blockchainTree.Blocks.FirstOrDefault(b =>
// ReSharper disable once AccessToModifiedClosure
block is Block current && b.UniqueId == current.ParentUniqueId);
if (block != null)
{
blockchain.Blocks.Add(block);
}
} while (block != null);
return blockchain;
}));
}
private void SaveBlockchain(BlockchainTree blockchainTree)
{
_cache.Remove(CacheKeys.LastBlock);
_cache.Remove(CacheKeys.BlockchainTree);
_cache.Remove(CacheKeys.LongestBlockchain);
_cache.Set(CacheKeys.BlockchainTree, blockchainTree);
using (var streamWriter = _fileRepository.GetFileWriter(_blockchainFileName))
using (var jsonWriter = new JsonTextWriter(streamWriter))
{
_serializer.Serialize(jsonWriter, blockchainTree);
jsonWriter.Flush();
}
}
public static BlockBase ManualMap(this IMapper mapper, BlockchainTree blockchainTree)
{
if (blockchainTree == null)
{
return(null);
}
var blocks = mapper.Map <List <BlockBase> >(blockchainTree.Blocks);
blocks.Where(b => !b.IsGenesis).Cast <Block.Block>().ToList()
.ForEach(b => b.Parent = blocks.FirstOrDefault(bl => b.ParentUniqueId == bl.UniqueId));
blocks.ForEach(b => SetupTransactions(b.Body.MerkleTree, b.Body.Transactions));
return(blocks.OrderByDescending(b => (b as Block.Block)?.Depth ?? 0).FirstOrDefault());
}
public BlockchainTree GetBlockchainFromBranch(string uniqueId)
{
if (uniqueId == null)
{
return(null);
}
lock (_padlock)
{
var blockchainTree = GetBlockchainTree();
if (blockchainTree?.Blocks == null)
{
return(null);
}
var blockchain = new BlockchainTree {
Blocks = new List <BlockBase>()
};
BlockBase block = null;
do
{
block = block == null
? blockchainTree.Blocks.FirstOrDefault(b => b.UniqueId == uniqueId)
: blockchainTree.Blocks.FirstOrDefault(b =>
block is Block current && b.UniqueId == current.ParentUniqueId);
if (block != null)
{
blockchain.Blocks.Add(block);
}
} while (block != null);
blockchain.Blocks = blockchain.Blocks.OrderBy(b => b.Depth).ToList();
return(blockchain);
}
}
