public async Task <List <DltBlock> > GetRecentBlocks(int numberOfBlocks)
{
ulong blockCount = (ulong)numberOfBlocks;
var web3 = new Nethereum.Geth.Web3Geth();
ulong startBlockNumber = 0;
ulong endBlockNumber = startBlockNumber + blockCount;
var maxBlockNumber = await this.GetLatestBlockNumber();
startBlockNumber = maxBlockNumber < blockCount ? 1 : maxBlockNumber - blockCount;
endBlockNumber = maxBlockNumber;
List <DltBlock> dltBlocks = new List <DltBlock>();
Dictionary <string, SmartContractTransaction> databaseDataDict = new Dictionary <string, SmartContractTransaction>();
List <string> transactionHashesList = new List <string>();
for (ulong blockNumber = startBlockNumber; blockNumber <= endBlockNumber; blockNumber++)
{
var blockParameter = new BlockParameter(blockNumber);
var blockEth = await web3.Eth.Blocks.GetBlockWithTransactionsByNumber.SendRequestAsync(blockParameter);
var trans = blockEth.Transactions;
int txCount = trans.Length;
DltBlock block = null;
DateTime blockDatetime = Helper.UnixTimeStampToDateTime((double)blockEth.Timestamp.Value);
block = new DltBlock
{
BlockNumber = blockNumber,
TransactionCount = txCount,
BlockDatetime = blockDatetime,
BlockHash = blockEth.BlockHash,
Difficulty = (ulong)blockEth.Difficulty.Value,
GasLimit = (ulong)blockEth.GasLimit.Value,
GasUsed = (ulong)blockEth.GasUsed.Value,
Size = (ulong)blockEth.Size.Value
};
if (block.TransactionCount > 0)
{
block.DltTransactions = new List <DltBlockTransaction>();
foreach (var transaction in blockEth.Transactions)
{
DltBlockTransaction dltTransaction = new DltBlockTransaction()
{
From = transaction.From,
To = transaction.To,
Gas = (ulong)transaction.Gas.Value,
GasPrice = (ulong)transaction.GasPrice.Value,
Nonce = (ulong)transaction.Nonce.Value,
Value = (ulong)transaction.Value.Value,
TransactionHash = transaction.TransactionHash
};
block.DltTransactions.Add(dltTransaction);
transactionHashesList.Add(transaction.TransactionHash);
}
}
dltBlocks.Add(block);
}
dltBlocks = await AddDatabaseDataToDltBlock(dltBlocks, transactionHashesList);
return(dltBlocks.OrderByDescending(block => block.BlockNumber).ToList());
}
public async Task <DltBlock> GetLatestBlock()
{
var web3 = new Nethereum.Geth.Web3Geth();
ulong blockNumber = await this.GetLatestBlockNumber();
var blockParameter = new BlockParameter(blockNumber);
var blockEth = await web3.Eth.Blocks.GetBlockWithTransactionsByNumber.SendRequestAsync(blockParameter);
var trans = blockEth.Transactions;
int txCount = trans.Length;
DltBlock block = null;
DateTime blockDatetime = Helper.UnixTimeStampToDateTime((double)blockEth.Timestamp.Value);
block = new DltBlock
{
BlockNumber = blockNumber,
TransactionCount = txCount,
BlockDatetime = blockDatetime,
BlockHash = blockEth.BlockHash,
Difficulty = (ulong)blockEth.Difficulty.Value,
GasLimit = (ulong)blockEth.GasLimit.Value,
GasUsed = (ulong)blockEth.GasUsed.Value,
Size = (ulong)blockEth.Size.Value
};
if (block.TransactionCount > 0)
{
block.DltTransactions = new List <DltBlockTransaction>();
foreach (var transaction in blockEth.Transactions)
{
DltBlockTransaction dltTransaction = new DltBlockTransaction()
{
From = transaction.From,
To = transaction.To,
Gas = (ulong)transaction.Gas.Value,
GasPrice = (ulong)transaction.GasPrice.Value,
Nonce = (ulong)transaction.Nonce.Value,
Value = (ulong)transaction.Value.Value,
TransactionHash = transaction.TransactionHash
};
block.DltTransactions.Add(dltTransaction);
}
}
return(block);
}
