public void GetWithHigestFee()
{
var pool = new TransactionPool();
var tx1 = new Transaction()
{
fee = 1
};
var tx2 = new Transaction()
{
fee = 2
};
var tx3 = new Transaction()
{
fee = 3
};
var tx4 = new Transaction()
{
fee = 4
};
pool.AddTransaction(tx1);
pool.AddTransaction(tx2);
pool.AddTransaction(tx3);
pool.AddTransaction(tx4);
var txs = pool.GetTransactionsWithHighestFee(3);
Assert.AreEqual(3, txs.Length);
Assert.AreEqual(4, txs[0].fee);
Assert.AreEqual(3, txs[1].fee);
Assert.AreEqual(2, txs[2].fee);
}
public void CannotAddDuplicatedTransaction()
{
var pool = new TransactionPool();
var tx = new Transaction()
{
};
pool.AddTransaction(tx);
pool.AddTransaction(tx);
pool.AddTransaction(tx);
Assert.AreEqual(pool.count, 1);
}
public void AddTransactionTwice()
{
var sender = new Address();
var receiver = new Address();
Transaction transaction = new Transaction(sender, receiver, new BigInteger(100));
TransactionPool pool = new TransactionPool();
pool.AddTransaction(transaction);
pool.AddTransaction(transaction);
Assert.AreEqual(1, pool.Transactions.Count);
Assert.IsTrue(pool.Transactions.Contains(transaction));
}
private void Arrange()
{
var txn1 = new ClaimSettlement("ABC123", 1000.00m, DateTime.Now, "QWE123", 10000, ClaimType.TotalLoss);
var txn2 = new ClaimSettlement("VBG345", 2000.00m, DateTime.Now, "JKH567", 20000, ClaimType.TotalLoss);
var txn3 = new ClaimSettlement("XCF234", 3000.00m, DateTime.Now, "DH23ED", 30000, ClaimType.TotalLoss);
var txn4 = new ClaimSettlement("CBHD45", 4000.00m, DateTime.Now, "DH34K6", 40000, ClaimType.TotalLoss);
txnPool.AddTransaction(txn1);
txnPool.AddTransaction(txn2);
txnPool.AddTransaction(txn3);
txnPool.AddTransaction(txn4);
block1.Add(txnPool.GetTransaction());
block1.Add(txnPool.GetTransaction());
block2.Add(txnPool.GetTransaction());
block2.Add(txnPool.GetTransaction());
}
public void CanUpdateTransaction()
{
var pool = new TransactionPool();
var txV1 = new Transaction()
{
version = 0, fee = 0
};
pool.AddTransaction(txV1);
// update transaction
txV1.version = 1;
txV1.fee = 1;
pool.AddTransaction(txV1);
Assert.AreEqual(pool.count, 1);
Assert.AreEqual(
pool.GetTransactionsWithHighestFee(1)[0].fee,
1);
}
public void MineBlockWithTwoTransactions()
{
TransactionPool transactionPool = new TransactionPool();
Transaction transaction1 = FactoryHelper.CreateTransaction(1000);
Transaction transaction2 = FactoryHelper.CreateTransaction(2000);
transactionPool.AddTransaction(transaction1);
transactionPool.AddTransaction(transaction2);
MinerProcessor processor = new MinerProcessor(transactionPool);
Block genesis = FactoryHelper.CreateGenesisBlock();
Block block = processor.MineBlock(genesis);
Assert.IsNotNull(block);
Assert.AreEqual(1ul, block.Number);
Assert.AreEqual(2, block.Transactions.Count);
Assert.IsTrue(block.Transactions.Contains(transaction1));
Assert.IsTrue(block.Transactions.Contains(transaction2));
}
public void MineBlockWithTransaction()
{
TransactionPool transactionPool = new TransactionPool();
Transaction transaction = FactoryHelper.CreateTransaction(1000);
transactionPool.AddTransaction(transaction);
MinerProcessor processor = new MinerProcessor(transactionPool);
Block genesis = FactoryHelper.CreateGenesisBlock();
Block block = processor.MineBlock(genesis);
Assert.IsNotNull(block);
Assert.AreEqual(1ul, block.Number);
Assert.AreEqual(1, block.Transactions.Count);
Assert.AreSame(transaction, block.Transactions[0]);
Assert.AreEqual(genesis.Hash, block.ParentHash);
}
// Composition Root - 组合根：
// 设计模式。在程序的入口处进行抽象-具体的依赖关系配置。
// Pure DI
public static void Main()
{
// 出创世区块：通过执行一批交易来初始化整条链，一般包括部署系统合约，如共识合约，多资产合约等，并对系统合约做初步配置
// 准备交易
var transactionPool = new TransactionPool
{
Logger = new ConsoleLogger()
};
foreach (var genesisTransaction in TransactionGenerationHelper.GetGenesisTransactions())
{
transactionPool.AddTransaction(genesisTransaction);
}
// 打包创世区块
// 准备MineService
var blockValidationService = new BlockValidationService(new List <IBlockValidationProvider>
{
new BlockTransactionValidationProvider
{
Logger = new ConsoleLogger()
},
new BlockBasicInformationValidationProvider
{
Logger = new ConsoleLogger()
}
})
{
Logger = new ConsoleLogger()
};
var blockChainService = new BlockChainService(new PureDIChainIdProvider(), blockValidationService)
{
Logger = new ConsoleLogger()
};
var transactionExecutingService = new TransactionExecutingService
{
Logger = new ConsoleLogger()
};
var mineService = new MineService(transactionPool, blockChainService, transactionExecutingService);
// 生产创世区块
var genesisBlock = mineService.Mine();
// 把创世区块添加到链上
blockChainService.AppendBlock(genesisBlock);
// 创世区块不广播，每一个节点都独立生成创世区块
// 所以NetworkService实例较晚才出现
var networkService = new NetworkService
{
Logger = new ConsoleLogger()
};
// 开始产生其他区块 - 挖矿
// Demo: 出2个块
var count = 2;
while (count > 0)
{
// 交易应该是从网络收取的，这里随机生成一些
var txs = TransactionGenerationHelper.GetSomeRandomTransactions();
// 正常流程：从网络中收到交易，验证交易，然后丢进交易池
foreach (var tx in txs)
{
transactionPool.AddTransaction(tx);
}
// 交易池里已经有交易了，然后开始出块
var block = mineService.Mine();
// 拿到区块以后，自己做一些列验证，没问题的话就广播，并添加到本地的链上
networkService.BroadcastBlock(block);
blockChainService.AppendBlock(block);
count--;
}
// 实际上，共识决定了谁应该在什么时候出块，以及收到一个区块以后该怎么验证这个区块的合法性
}
private static ITransaction SetupTransactions()
{
var txn1 = new ClaimSettlement("ABC123", 1000.00m, DateTime.Now, "QWE123", 10000, ClaimType.TotalLoss);
var txn2 = new ClaimSettlement("VBG345", 2000.00m, DateTime.Now, "JKH567", 20000, ClaimType.TotalLoss);
var txn3 = new ClaimSettlement("XCF234", 3000.00m, DateTime.Now, "DH23ED", 30000, ClaimType.TotalLoss);
var txn4 = new ClaimSettlement("CBHD45", 4000.00m, DateTime.Now, "DH34K6", 40000, ClaimType.TotalLoss);
var txn5 = new ClaimSettlement("AJD345", 5000.00m, DateTime.Now, "28FNF4", 50000, ClaimType.TotalLoss);
var txn6 = new ClaimSettlement("QAX367", 6000.00m, DateTime.Now, "FJK676", 60000, ClaimType.TotalLoss);
var txn7 = new ClaimSettlement("CGO444", 7000.00m, DateTime.Now, "LKU234", 70000, ClaimType.TotalLoss);
var txn8 = new ClaimSettlement("PLO254", 8000.00m, DateTime.Now, "VBN456", 80000, ClaimType.TotalLoss);
var txn9 = new ClaimSettlement("ABC123", 1000.00m, DateTime.Now, "QWE123", 10000, ClaimType.TotalLoss);
var txn10 = new ClaimSettlement("VBG345", 2000.00m, DateTime.Now, "JKH567", 20000, ClaimType.TotalLoss);
var txn11 = new ClaimSettlement("XCF234", 3000.00m, DateTime.Now, "DH23ED", 30000, ClaimType.TotalLoss);
var txn12 = new ClaimSettlement("CBHD45", 4000.00m, DateTime.Now, "DH34K6", 40000, ClaimType.TotalLoss);
var txn13 = new ClaimSettlement("AJD345", 5000.00m, DateTime.Now, "28FNF4", 50000, ClaimType.TotalLoss);
var txn14 = new ClaimSettlement("QAX367", 6000.00m, DateTime.Now, "FJK676", 60000, ClaimType.TotalLoss);
var txn15 = new ClaimSettlement("CGO444", 7000.00m, DateTime.Now, "LKU234", 70000, ClaimType.TotalLoss);
var txn16 = new ClaimSettlement("PLO254", 8000.00m, DateTime.Now, "VBN456", 80000, ClaimType.TotalLoss);
txnPool.AddTransaction(txn1);
txnPool.AddTransaction(txn2);
txnPool.AddTransaction(txn3);
txnPool.AddTransaction(txn4);
txnPool.AddTransaction(txn5);
txnPool.AddTransaction(txn6);
txnPool.AddTransaction(txn7);
txnPool.AddTransaction(txn8);
txnPool.AddTransaction(txn9);
txnPool.AddTransaction(txn10);
txnPool.AddTransaction(txn11);
txnPool.AddTransaction(txn12);
txnPool.AddTransaction(txn13);
txnPool.AddTransaction(txn14);
txnPool.AddTransaction(txn15);
txnPool.AddTransaction(txn16);
return(txn5);
}