private async Task TransfertInternal(string from, string to, long amount, string asset)
{
var lAsset = LedgerPath.Parse(asset);
var aFrom = new AccountKey(LedgerPath.Parse(from), lAsset);
var aTo = new AccountKey(LedgerPath.Parse(to), lAsset);
var accounts = await Engine.GetAccounts(new[] { aFrom, aTo });
var adFrom = accounts[aFrom];
var adTo = accounts[aTo];
var rFrom = new Record(aFrom.Key.ToBinary(), LongToByteString(adFrom.Balance - amount), adFrom.Version);
var rTo = new Record(aTo.Key.ToBinary(), LongToByteString(adTo.Balance + amount), adTo.Version);
Mutation m = new Mutation(ByteString.Empty, new[] { rFrom, rTo }, ByteString.Empty);
int c = System.Threading.Interlocked.Increment(ref gcounter);
Transaction t = new Transaction(
new ByteString(MessageSerializer.SerializeMutation(m)),
DateTime.UtcNow,
new ByteString(BitConverter.GetBytes(c))
);
await Engine.AddTransactions(new[] { new ByteString(MessageSerializer.SerializeTransaction(t)) });
//Output.WriteLine($"{prefix} - {from} ==> {to} Success Retry : {tryCount}");
}
public async Task <ByteString> PostTransaction(ByteString rawMutation, IReadOnlyList <SignatureEvidence> authentication)
{
Mutation mutation;
try
{
// Verify that the mutation can be deserialized
mutation = MessageSerializer.DeserializeMutation(rawMutation);
}
catch (InvalidProtocolBufferException)
{
throw new TransactionInvalidException("InvalidMutation");
}
ParsedMutation parsedMutation = ParsedMutation.Parse(mutation);
IReadOnlyDictionary <AccountKey, AccountStatus> accounts = await ValidateMutation(mutation, parsedMutation);
ValidateAuthentication(authentication, MessageSerializer.ComputeHash(rawMutation.ToByteArray()));
DateTime date = DateTime.UtcNow;
IList <Mutation> generatedMutations = await this.validator.Validate(parsedMutation, authentication, accounts);
TransactionMetadata metadata = new TransactionMetadata(authentication);
byte[] rawMetadata = SerializeMetadata(metadata);
Transaction transaction = new Transaction(rawMutation, date, new ByteString(rawMetadata));
byte[] serializedTransaction = MessageSerializer.SerializeTransaction(transaction);
List <ByteString> transactions = new List <ByteString>()
{
new ByteString(serializedTransaction)
};
transactions.AddRange(await Task.WhenAll(generatedMutations.Select(async generatedMutation =>
{
await ValidateMutation(generatedMutation, ParsedMutation.Parse(generatedMutation));
Transaction generatedTransaction = new Transaction(new ByteString(MessageSerializer.SerializeMutation(generatedMutation)), date, ByteString.Empty);
return(new ByteString(MessageSerializer.SerializeTransaction(generatedTransaction)));
})));
try
{
await this.store.AddTransactions(transactions);
}
catch (ConcurrentMutationException)
{
throw new TransactionInvalidException("OptimisticConcurrency");
}
return(new ByteString(MessageSerializer.ComputeHash(serializedTransaction)));
}
private async Task <ByteString> AddTransaction(params Record[] records)
{
Mutation mutation = new Mutation(ByteString.Parse("0123"), records, ByteString.Parse("4567"));
ByteString serializedMutation = new ByteString(MessageSerializer.SerializeMutation(mutation));
Transaction transaction = new Transaction(
serializedMutation,
new DateTime(1, 2, 3, 4, 5, 6),
ByteString.Parse("abcdef"));
await this.Store.AddTransactions(new[] { new ByteString(MessageSerializer.SerializeTransaction(transaction)) });
return(new ByteString(MessageSerializer.ComputeHash(serializedMutation.ToByteArray())));
}
public void Transaction_Success()
{
Transaction transaction = new Transaction(
binaryData[0],
new DateTime(1, 2, 3, 4, 5, 6),
binaryData[1]);
byte[] result = MessageSerializer.SerializeTransaction(transaction);
Transaction finalTransaction = MessageSerializer.DeserializeTransaction(new ByteString(result));
Assert.Equal(79, result.Length);
Assert.Equal(transaction.Mutation, finalTransaction.Mutation);
Assert.Equal(transaction.Timestamp, finalTransaction.Timestamp);
Assert.Equal(transaction.TransactionMetadata, finalTransaction.TransactionMetadata);
}
private ByteString AddRecord(string key)
{
Mutation mutation = new Mutation(
ByteString.Empty,
new Record[] { new Record(new ByteString(Encoding.UTF8.GetBytes(key)), ByteString.Empty, ByteString.Empty) },
ByteString.Empty);
Transaction transaction = new Transaction(
new ByteString(MessageSerializer.SerializeMutation(mutation)),
new DateTime(),
ByteString.Empty);
this.transactions.Add(new ByteString(MessageSerializer.SerializeTransaction(transaction)));
return(new ByteString(MessageSerializer.ComputeHash(MessageSerializer.SerializeTransaction(transaction))));
}
private async Task AddRecords(params string[] keys)
{
Mutation mutation = new Mutation(
ByteString.Empty,
keys.Select(key => new Record(
new ByteString(Encoding.UTF8.GetBytes(key)),
ByteString.Empty,
ByteString.Empty)),
ByteString.Empty);
Transaction transaction = new Transaction(
new ByteString(MessageSerializer.SerializeMutation(mutation)),
new DateTime(),
ByteString.Empty);
await store.AddTransactions(new[] { new ByteString(MessageSerializer.SerializeTransaction(transaction)) });
}
private ByteString CreateTransaction(params string[] keys)
{
Mutation mutation = new Mutation(
ByteString.Empty,
keys.Select(key => new Record(
new ByteString(Encoding.UTF8.GetBytes(key)),
ByteString.Parse("ab"),
ByteString.Parse("cd"))),
ByteString.Empty);
byte[] serializedMutation = MessageSerializer.SerializeMutation(mutation);
Transaction transaction = new Transaction(
new ByteString(MessageSerializer.SerializeMutation(mutation)),
new DateTime(),
ByteString.Empty);
return(new ByteString(MessageSerializer.SerializeTransaction(transaction)));
}
private async Task <ByteString> AddRecords(ByteString version, ByteString value, params string[] keys)
{
Mutation mutation = new Mutation(
ByteString.Empty,
keys.Select(key => new Record(
new ByteString(Encoding.UTF8.GetBytes(key)),
value,
version)),
ByteString.Empty);
byte[] serializedMutation = MessageSerializer.SerializeMutation(mutation);
Transaction transaction = new Transaction(
new ByteString(MessageSerializer.SerializeMutation(mutation)),
new DateTime(),
ByteString.Empty);
await Engine.AddTransactions(new[] { new ByteString(MessageSerializer.SerializeTransaction(transaction)) });
return(new ByteString(MessageSerializer.ComputeHash(serializedMutation)));
}
public async Task AddTransaction_MultipleTransactionsSuccess()
{
IList <Record> records1 = new Record[]
{
new Record(binaryData[0], binaryData[1], ByteString.Empty),
new Record(binaryData[2], binaryData[3], ByteString.Empty),
};
ByteString mutation1 = new ByteString(MessageSerializer.SerializeMutation(new Mutation(ByteString.Empty, records1, ByteString.Empty)));
ByteString mutationHash1 = new ByteString(MessageSerializer.ComputeHash(mutation1.ToByteArray()));
IList <Record> records2 = new Record[]
{
new Record(binaryData[2], binaryData[5], mutationHash1),
new Record(binaryData[6], binaryData[7], ByteString.Empty),
};
ByteString mutation2 = new ByteString(MessageSerializer.SerializeMutation(new Mutation(ByteString.Empty, records2, ByteString.Empty)));
ByteString mutationHash2 = new ByteString(MessageSerializer.ComputeHash(mutation2.ToByteArray()));
// Submit both transactions at once
await this.Store.AddTransactions(new[]
{
new ByteString(MessageSerializer.SerializeTransaction(new Transaction(mutation1, new DateTime(), ByteString.Empty))),
new ByteString(MessageSerializer.SerializeTransaction(new Transaction(mutation2, new DateTime(), ByteString.Empty)))
});
IReadOnlyList <Record> result1 = await this.Store.GetRecords(new[] { binaryData[0] });
IReadOnlyList <Record> result2 = await this.Store.GetRecords(new[] { binaryData[2] });
IReadOnlyList <Record> result3 = await this.Store.GetRecords(new[] { binaryData[6] });
AssertRecord(result1[0], binaryData[0], binaryData[1], mutationHash1);
AssertRecord(result2[0], binaryData[2], binaryData[5], mutationHash2);
AssertRecord(result3[0], binaryData[6], binaryData[7], mutationHash2);
}
public async Task AddTransaction_MultipleTransactionsError()
{
IList <Record> records1 = new Record[]
{
new Record(binaryData[0], binaryData[1], ByteString.Empty),
new Record(binaryData[2], binaryData[3], ByteString.Empty),
};
ByteString mutation1 = new ByteString(MessageSerializer.SerializeMutation(new Mutation(ByteString.Empty, records1, ByteString.Empty)));
IList <Record> records2 = new Record[]
{
new Record(binaryData[2], binaryData[5], ByteString.Empty),
new Record(binaryData[6], binaryData[7], ByteString.Empty),
};
ByteString mutation2 = new ByteString(MessageSerializer.SerializeMutation(new Mutation(ByteString.Empty, records2, ByteString.Empty)));
// Submit both transactions at once
ConcurrentMutationException exception = await Assert.ThrowsAsync <ConcurrentMutationException>(() => this.Store.AddTransactions(new[]
{
new ByteString(MessageSerializer.SerializeTransaction(new Transaction(mutation1, new DateTime(), ByteString.Empty))),
new ByteString(MessageSerializer.SerializeTransaction(new Transaction(mutation2, new DateTime(), ByteString.Empty)))
}));
IReadOnlyList <Record> result1 = await this.Store.GetRecords(new[] { binaryData[0] });
IReadOnlyList <Record> result2 = await this.Store.GetRecords(new[] { binaryData[2] });
IReadOnlyList <Record> result3 = await this.Store.GetRecords(new[] { binaryData[6] });
AssertRecord(exception.FailedMutation, binaryData[2], binaryData[5], ByteString.Empty);
AssertRecord(result1[0], binaryData[0], ByteString.Empty, ByteString.Empty);
AssertRecord(result2[0], binaryData[2], ByteString.Empty, ByteString.Empty);
AssertRecord(result3[0], binaryData[6], ByteString.Empty, ByteString.Empty);
}
public async Task <ByteString> PostTransaction(ByteString rawMutation, IReadOnlyList <SignatureEvidence> authentication)
{
Mutation mutation;
try
{
// Verify that the mutation can be deserialized
mutation = MessageSerializer.DeserializeMutation(rawMutation);
}
catch (InvalidProtocolBufferException)
{
throw new TransactionInvalidException("InvalidMutation");
}
if (!mutation.Namespace.Equals(this.Namespace))
{
throw new TransactionInvalidException("InvalidNamespace");
}
if (mutation.Records.Count == 0)
{
throw new TransactionInvalidException("InvalidMutation");
}
if (mutation.Records.Any(record => record.Key.Value.Count > MaxKeySize))
{
throw new TransactionInvalidException("InvalidMutation");
}
ValidateAuthentication(authentication, MessageSerializer.ComputeHash(rawMutation.ToByteArray()));
ParsedMutation parsedMutation = ParsedMutation.Parse(mutation);
// All assets must have an overall zero balance
IReadOnlyDictionary <AccountKey, AccountStatus> accounts =
await this.store.GetAccounts(parsedMutation.AccountMutations.Select(entry => entry.AccountKey));
var groups = parsedMutation.AccountMutations
.GroupBy(account => account.AccountKey.Asset.FullPath)
.Select(group => group.Sum(entry => entry.Balance - accounts[entry.AccountKey].Balance));
if (groups.Any(group => group != 0))
{
throw new TransactionInvalidException("UnbalancedTransaction");
}
DateTime date = DateTime.UtcNow;
await this.validator.Validate(parsedMutation, authentication, accounts);
TransactionMetadata metadata = new TransactionMetadata(authentication);
byte[] rawMetadata = SerializeMetadata(metadata);
Transaction transaction = new Transaction(rawMutation, date, new ByteString(rawMetadata));
byte[] serializedTransaction = MessageSerializer.SerializeTransaction(transaction);
try
{
await this.store.AddTransactions(new[] { new ByteString(serializedTransaction) });
}
catch (ConcurrentMutationException)
{
throw new TransactionInvalidException("OptimisticConcurrency");
}
return(new ByteString(MessageSerializer.ComputeHash(serializedTransaction)));
}