public long GetLatestConfirmedHeight() { var dac = new BlockDac(); var block = dac.SelectLastConfirmed(); if (block != null) { return(block.Height); } else { return(-1); } }
public void ProcessUncsonfirmedBlocks() { var blockDac = new BlockDac(); var txDac = new TransactionDac(); var txComponent = new TransactionComponent(); var utxoComponent = new UtxoComponent(); long lastHeight = this.GetLatestHeight(); long confirmedHeight = -1; var confirmedBlock = blockDac.SelectLastConfirmed(); var confirmedHash = Base16.Encode(HashHelper.EmptyHash()); if (confirmedBlock != null) { confirmedHeight = confirmedBlock.Height; confirmedHash = confirmedBlock.Hash; } if (lastHeight - confirmedHeight >= 6) { var blocks = blockDac.SelectByPreviousHash(confirmedHash); if (blocks.Count == 1) { blockDac.UpdateBlockStatusToConfirmed(blocks[0].Hash); this.ProcessUncsonfirmedBlocks(); } else if (blocks.Count > 1) { var countOfDescendants = new Dictionary <string, long>(); foreach (var block in blocks) { var count = blockDac.CountOfDescendants(block.Hash); if (!countOfDescendants.ContainsKey(block.Hash)) { countOfDescendants.Add(block.Hash, count); } } var dicSort = countOfDescendants.OrderBy(d => d.Value).ToList(); var lastItem = blocks.Where(b => b.Hash == dicSort[dicSort.Count - 1].Key).First(); var index = 0; while (index < dicSort.Count - 1) { var currentItem = blocks.Where(b => b.Hash == dicSort[index].Key).First(); if (lastHeight - currentItem.Height >= 6) { var txList = txDac.SelectByBlockHash(currentItem.Hash); //Skip coinbase tx for (int i = 1; i < txList.Count; i++) { var tx = txList[i]; var txMsg = txComponent.ConvertTxEntityToMsg(tx); txComponent.AddTransactionToPool(txMsg); } //remove coinbase from utxo UtxoSet.Instance.RemoveUtxoRecord(txList[0].Hash, 0); blockDac.UpdateBlockStatusToDiscarded(currentItem.Hash); index++; } else { break; } } if (dicSort.Count - index <= 1) { blockDac.UpdateBlockStatusToConfirmed(lastItem.Hash); this.ProcessUncsonfirmedBlocks(); } } } }