protected override TReturn CallInternal <TReturn>(bool isStream, Type interfaceType, string methodName, object[] arguments)
{
var data = new CQRSRequestData()
{
ProviderType = interfaceType.Name,
ProviderMethod = methodName
};
data.AddProviderArguments(arguments);
switch (networkType)
{
case NetworkType.Internal:
data.AddClaims();
break;
case NetworkType.Api:
break;
default: throw new NotImplementedException();
}
var stopwatch = Stopwatch.StartNew();
var client = new TcpClient(endpoint.AddressFamily);
var bufferOwner = BufferArrayPool <byte> .Rent(TcpRawCommon.BufferLength);
var buffer = bufferOwner.AsMemory();
Stream stream = null;
Stream requestBodyStream = null;
FinalBlockStream requestBodyCryptoStream = null;
Stream responseBodyStream = null;
try
{
client.Connect(endpoint.Address, endpoint.Port);
stream = client.GetStream();
//Request Header
var requestHeaderLength = TcpRawCommon.BufferHeader(buffer, data.ProviderType, contentType);
#if NETSTANDARD2_0
stream.Write(bufferOwner, 0, requestHeaderLength);
#else
stream.Write(buffer.Span.Slice(0, requestHeaderLength));
#endif
requestBodyStream = new TcpRawProtocolBodyStream(stream, null, true);
if (encryptionKey != null)
{
requestBodyCryptoStream = SymmetricEncryptor.Encrypt(encryptionAlgorithm, encryptionKey, requestBodyStream, true, true);
ContentTypeSerializer.Serialize(contentType, requestBodyCryptoStream, data);
requestBodyCryptoStream.FlushFinalBlock();
requestBodyCryptoStream.Dispose();
requestBodyCryptoStream = null;
}
else
{
ContentTypeSerializer.Serialize(contentType, requestBodyStream, data);
requestBodyStream.Flush();
}
requestBodyStream.Dispose();
requestBodyStream = null;
//Response Header
var headerPosition = 0;
var headerLength = 0;
var requestHeaderEnd = false;
while (!requestHeaderEnd)
{
if (headerLength == buffer.Length)
{
throw new Exception($"{nameof(TcpRawCQRSClient)} Header Too Long");
}
#if NETSTANDARD2_0
var bytesRead = stream.Read(bufferOwner, headerPosition, buffer.Length - headerPosition);
#else
var bytesRead = stream.Read(buffer.Span.Slice(headerPosition, buffer.Length - headerPosition));
#endif
if (bytesRead == 0)
{
throw new EndOfStreamException();
}
headerLength += bytesRead;
requestHeaderEnd = TcpRawCommon.ReadToHeaderEnd(buffer, ref headerPosition, headerLength);
}
var responseHeader = TcpRawCommon.ReadHeader(buffer, headerPosition, headerLength);
responseBodyStream = new TcpRawProtocolBodyStream(stream, responseHeader.BodyStartBuffer, false);
if (encryptionKey != null)
{
responseBodyStream = SymmetricEncryptor.Decrypt(encryptionAlgorithm, encryptionKey, responseBodyStream, false, false);
}
if (responseHeader.IsError)
{
var responseException = ContentTypeSerializer.DeserializeException(contentType, responseBodyStream);
throw responseException;
}
stopwatch.Stop();
_ = Log.TraceAsync($"{nameof(TcpRawCQRSClient)} Query: {interfaceType.GetNiceName()}.{data.ProviderMethod} {stopwatch.ElapsedMilliseconds}");
if (isStream)
{
return((TReturn)(object)responseBodyStream); //TODO better way to convert type???
}
else
{
var model = ContentTypeSerializer.Deserialize <TReturn>(contentType, responseBodyStream);
responseBodyStream.Dispose();
client.Dispose();
return(model);
}
}
catch
{
try
{
//crypto stream can error, we want to throw the actual error
if (responseBodyStream != null)
{
responseBodyStream.Dispose();
}
}
catch { }
if (requestBodyStream != null)
{
requestBodyStream.Dispose();
}
if (requestBodyCryptoStream != null)
{
requestBodyCryptoStream.Dispose();
}
if (stream != null)
{
stream.Dispose();
}
client.Dispose();
throw;
}
finally
{
BufferArrayPool <byte> .Return(bufferOwner);
}
}
protected override async Task DispatchInternal(ICommand command, bool messageAwait)
{
var messageType = command.GetType();
var messageTypeName = messageType.GetNiceName();
var messageData = System.Text.Json.JsonSerializer.Serialize(command, messageType);
var data = new CQRSRequestData()
{
MessageType = messageTypeName,
MessageData = messageData,
MessageAwait = messageAwait
};
switch (networkType)
{
case NetworkType.Internal:
data.AddClaims();
break;
case NetworkType.Api:
break;
default:
throw new NotImplementedException();
}
var stopwatch = Stopwatch.StartNew();
var client = new TcpClient(endpoint.AddressFamily);
client.NoDelay = true;
var bufferOwner = BufferArrayPool <byte> .Rent(TcpRawCommon.BufferLength);
var buffer = bufferOwner.AsMemory();
Stream stream = null;
Stream requestBodyStream = null;
FinalBlockStream requestBodyCryptoStream = null;
Stream responseBodyStream = null;
try
{
await client.ConnectAsync(endpoint.Address, endpoint.Port);
stream = client.GetStream();
//Request Header
var requestHeaderLength = TcpRawCommon.BufferHeader(buffer, data.MessageType, contentType);
#if NETSTANDARD2_0
await stream.WriteAsync(bufferOwner, 0, requestHeaderLength);
#else
await stream.WriteAsync(buffer.Slice(0, requestHeaderLength));
#endif
requestBodyStream = new TcpRawProtocolBodyStream(stream, null, true);
if (encryptionKey != null)
{
requestBodyCryptoStream = SymmetricEncryptor.Encrypt(encryptionAlgorithm, encryptionKey, requestBodyStream, true, true);
await ContentTypeSerializer.SerializeAsync(contentType, requestBodyCryptoStream, data);
#if NET5_0_OR_GREATER
await requestBodyCryptoStream.FlushFinalBlockAsync();
#else
requestBodyCryptoStream.FlushFinalBlock();
#endif
#if NETSTANDARD2_0
requestBodyCryptoStream.Dispose();
#else
await requestBodyCryptoStream.DisposeAsync();
#endif
requestBodyCryptoStream = null;
}
else
{
await ContentTypeSerializer.SerializeAsync(contentType, requestBodyStream, data);
await requestBodyStream.FlushAsync();
}
#if NETSTANDARD2_0
requestBodyStream.Dispose();
#else
await requestBodyStream.DisposeAsync();
#endif
requestBodyStream = null;
//Response Header
var headerPosition = 0;
var headerLength = 0;
var requestHeaderEnd = false;
while (!requestHeaderEnd)
{
if (headerLength == buffer.Length)
{
throw new Exception($"{nameof(TcpRawCQRSClient)} Header Too Long");
}
#if NETSTANDARD2_0
var bytesRead = await stream.ReadAsync(bufferOwner, headerPosition, buffer.Length - headerPosition);
#else
var bytesRead = await stream.ReadAsync(buffer.Slice(headerPosition, buffer.Length - headerPosition));
#endif
if (bytesRead == 0)
{
throw new EndOfStreamException();
}
headerLength += bytesRead;
requestHeaderEnd = TcpRawCommon.ReadToHeaderEnd(buffer, ref headerPosition, headerLength);
}
var responseHeader = TcpRawCommon.ReadHeader(buffer, headerPosition, headerLength);
//Response Body
responseBodyStream = new TcpRawProtocolBodyStream(stream, responseHeader.BodyStartBuffer, false);
if (responseHeader.IsError)
{
if (encryptionKey != null)
{
responseBodyStream = SymmetricEncryptor.Decrypt(encryptionAlgorithm, encryptionKey, responseBodyStream, false, false);
}
var responseException = await ContentTypeSerializer.DeserializeExceptionAsync(contentType, responseBodyStream);
throw responseException;
}
if (responseBodyStream != null)
{
#if NETSTANDARD2_0
responseBodyStream.Dispose();
#else
await responseBodyStream.DisposeAsync();
#endif
}
client.Dispose();
stopwatch.Stop();
_ = Log.TraceAsync($"{nameof(TcpRawCQRSClient)}Sent: {messageTypeName} {stopwatch.ElapsedMilliseconds}");
}
catch
{
if (responseBodyStream != null)
{
#if NETSTANDARD2_0
responseBodyStream.Dispose();
#else
await responseBodyStream.DisposeAsync();
#endif
}
if (requestBodyStream != null)
{
#if NETSTANDARD2_0
requestBodyStream.Dispose();
#else
await requestBodyStream.DisposeAsync();
#endif
}
if (stream != null)
{
#if NETSTANDARD2_0
stream.Dispose();
#else
await stream.DisposeAsync();
#endif
}
client.Dispose();
throw;
}
finally
{
BufferArrayPool <byte> .Return(bufferOwner);
}
}
protected override async void Handle(TcpClient client, CancellationToken cancellationToken)
{
TcpRequestHeader requestHeader = null;
bool responseStarted = false;
var bufferOwner = BufferArrayPool <byte> .Rent(TcpRawCommon.BufferLength);
var buffer = bufferOwner.AsMemory();
Stream stream = null;
Stream requestBodyStream = null;
Stream responseBodyStream = null;
FinalBlockStream responseBodyCryptoStream = null;
try
{
stream = client.GetStream();
//Read Request Header
//------------------------------------------------------------------------------------------------------------
var headerPosition = 0;
var headerLength = 0;
var requestHeaderEnd = false;
while (!requestHeaderEnd)
{
if (headerLength == buffer.Length)
{
throw new Exception($"{nameof(TcpRawCQRSServer)} Header Too Long");
}
#if NETSTANDARD2_0
var bytesRead = await stream.ReadAsync(bufferOwner, headerLength, buffer.Length - headerLength, cancellationToken);
#else
var bytesRead = await stream.ReadAsync(buffer.Slice(headerLength, buffer.Length - headerLength), cancellationToken);
#endif
if (bytesRead == 0)
{
throw new EndOfStreamException();
}
headerLength += bytesRead;
requestHeaderEnd = TcpRawCommon.ReadToHeaderEnd(buffer, ref headerPosition, headerLength);
}
requestHeader = TcpRawCommon.ReadHeader(buffer, headerPosition, headerLength);
if (!requestHeader.ContentType.HasValue || (contentType.HasValue && requestHeader.ContentType.HasValue && requestHeader.ContentType != contentType))
{
_ = Log.ErrorAsync($"{nameof(TcpRawCQRSServer)} Received Invalid Content Type {requestHeader.ContentType}");
throw new Exception("Invalid Content Type");
}
_ = Log.TraceAsync($"{nameof(TcpRawCQRSServer)} Received On {client.Client.LocalEndPoint} From {client.Client.RemoteEndPoint} {requestHeader.ProviderType}");
//Read Request Body
//------------------------------------------------------------------------------------------------------------
requestBodyStream = new TcpRawProtocolBodyStream(stream, requestHeader.BodyStartBuffer, true);
if (encryptionKey != null)
{
requestBodyStream = networkType switch
{
NetworkType.Internal => SymmetricEncryptor.Decrypt(encryptionAlgorithm, encryptionKey, requestBodyStream, false, false),
NetworkType.Api => throw new NotSupportedException($"Encryption Not Supported for Network Type {EnumName.GetEnumName(networkType)}"),
_ => throw new NotImplementedException(),
};
}
var data = await ContentTypeSerializer.DeserializeAsync <CQRSRequestData>(requestHeader.ContentType.Value, requestBodyStream);
if (data == null)
{
throw new Exception("Empty request body");
}
#if NETSTANDARD2_0
requestBodyStream.Dispose();
#else
await requestBodyStream.DisposeAsync();
#endif
requestBodyStream = null;
//Authroize
//------------------------------------------------------------------------------------------------------------
switch (networkType)
{
case NetworkType.Internal:
if (data.Claims != null)
{
var claimsIdentity = new ClaimsIdentity(data.Claims.Select(x => new Claim(x.Type, x.Value)), "CQRS");
Thread.CurrentPrincipal = new ClaimsPrincipal(claimsIdentity);
}
else
{
Thread.CurrentPrincipal = null;
}
break;
case NetworkType.Api:
break;
default:
throw new NotImplementedException();
}
//Process and Respond
//----------------------------------------------------------------------------------------------------
if (!String.IsNullOrWhiteSpace(data.ProviderType))
{
var providerType = Discovery.GetTypeFromName(data.ProviderType);
var typeDetail = TypeAnalyzer.GetTypeDetail(providerType);
if (!this.interfaceTypes.Contains(providerType))
{
throw new Exception($"Unhandled Provider Type {providerType.FullName}");
}
bool exposed = typeDetail.Attributes.Any(x => x is ServiceExposedAttribute attribute && (!attribute.NetworkType.HasValue || attribute.NetworkType == networkType)) &&
!typeDetail.Attributes.Any(x => x is ServiceBlockedAttribute attribute && (!attribute.NetworkType.HasValue || attribute.NetworkType == networkType));
if (!exposed)
{
throw new Exception($"Provider {data.MessageType} is not exposed to {networkType}");
}
_ = Log.TraceAsync($"Received Call: {providerType.GetNiceName()}.{data.ProviderMethod}");
var result = await this.providerHandlerAsync.Invoke(providerType, data.ProviderMethod, data.ProviderArguments);
//Response Header
var responseHeaderLength = TcpRawCommon.BufferHeader(buffer, requestHeader.ProviderType, requestHeader.ContentType.Value);
#if NETSTANDARD2_0
await stream.WriteAsync(bufferOwner, 0, responseHeaderLength, cancellationToken);
#else
await stream.WriteAsync(buffer.Slice(0, responseHeaderLength), cancellationToken);
#endif
//Response Body
responseBodyStream = new TcpRawProtocolBodyStream(stream, null, true);
int bytesRead;
if (result.Stream != null)
{
if (encryptionKey != null)
{
responseBodyCryptoStream = networkType switch
{
NetworkType.Internal => SymmetricEncryptor.Encrypt(encryptionAlgorithm, encryptionKey, responseBodyStream, true, false),
NetworkType.Api => throw new NotSupportedException($"Encryption Not Supported for Network Type {EnumName.GetEnumName(networkType)}"),
_ => throw new NotImplementedException(),
};
#if NETSTANDARD2_0
while ((bytesRead = await result.Stream.ReadAsync(bufferOwner, 0, bufferOwner.Length, cancellationToken)) > 0)
{
await responseBodyCryptoStream.WriteAsync(bufferOwner, 0, bytesRead, cancellationToken);
}
#else
while ((bytesRead = await result.Stream.ReadAsync(buffer, cancellationToken)) > 0)
{
await responseBodyCryptoStream.WriteAsync(buffer.Slice(0, bytesRead), cancellationToken);
}
#endif
#if NET5_0_OR_GREATER
await responseBodyCryptoStream.FlushFinalBlockAsync();
#else
responseBodyCryptoStream.FlushFinalBlock();
#endif
#if NETSTANDARD2_0
responseBodyCryptoStream.Dispose();
#else
await responseBodyCryptoStream.DisposeAsync();
#endif
responseBodyCryptoStream = null;
}
else
{
#if NETSTANDARD2_0
while ((bytesRead = await result.Stream.ReadAsync(bufferOwner, 0, bufferOwner.Length, cancellationToken)) > 0)
{
await responseBodyStream.WriteAsync(bufferOwner, 0, bytesRead, cancellationToken);
}
#else
while ((bytesRead = await result.Stream.ReadAsync(buffer, cancellationToken)) > 0)
{
await responseBodyStream.WriteAsync(buffer.Slice(0, bytesRead), cancellationToken);
}
#endif
await responseBodyStream.FlushAsync(cancellationToken);
#if NETSTANDARD2_0
responseBodyStream.Dispose();
#else
await responseBodyStream.DisposeAsync();
#endif
}
client.Dispose();
return;
}
else
{
if (encryptionKey != null)
{
responseBodyCryptoStream = networkType switch
{
NetworkType.Internal => SymmetricEncryptor.Encrypt(encryptionAlgorithm, encryptionKey, responseBodyStream, true, false),
NetworkType.Api => throw new NotSupportedException($"Encryption Not Supported for Network Type {EnumName.GetEnumName(networkType)}"),
_ => throw new NotImplementedException(),
};
await ContentTypeSerializer.SerializeAsync(requestHeader.ContentType.Value, responseBodyCryptoStream, result.Model);
#if NET5_0_OR_GREATER
await responseBodyCryptoStream.FlushFinalBlockAsync();
#else
responseBodyCryptoStream.FlushFinalBlock();
#endif
#if NETSTANDARD2_0
responseBodyCryptoStream.Dispose();
#else
await responseBodyCryptoStream.DisposeAsync();
#endif
responseBodyCryptoStream = null;
return;
}
else
{
await ContentTypeSerializer.SerializeAsync(requestHeader.ContentType.Value, responseBodyStream, result.Model);
await responseBodyStream.FlushAsync(cancellationToken);
#if NETSTANDARD2_0
responseBodyStream.Dispose();
#else
await responseBodyStream.DisposeAsync();
#endif
return;
}
}
}
else if (!String.IsNullOrWhiteSpace(data.MessageType))
{
var commandType = Discovery.GetTypeFromName(data.MessageType);
var typeDetail = TypeAnalyzer.GetTypeDetail(commandType);
if (!typeDetail.Interfaces.Contains(typeof(ICommand)))
{
throw new Exception($"Type {data.MessageType} is not a command");
}
bool exposed = typeDetail.Attributes.Any(x => x is ServiceExposedAttribute attribute && (!attribute.NetworkType.HasValue || attribute.NetworkType == networkType)) &&
!typeDetail.Attributes.Any(x => x is ServiceBlockedAttribute attribute && (!attribute.NetworkType.HasValue || attribute.NetworkType == networkType));
if (!exposed)
{
throw new Exception($"Command {data.MessageType} is not exposed to {networkType}");
}
var command = (ICommand)System.Text.Json.JsonSerializer.Deserialize(data.MessageData, commandType);
if (data.MessageAwait)
{
await handlerAwaitAsync(command);
}
else
{
await handlerAsync(command);
}
//Response Header
var responseHeaderLength = TcpRawCommon.BufferHeader(buffer, requestHeader.ProviderType, requestHeader.ContentType.Value);
#if NETSTANDARD2_0
await stream.WriteAsync(bufferOwner, 0, responseHeaderLength, cancellationToken);
#else
await stream.WriteAsync(buffer.Slice(0, responseHeaderLength), cancellationToken);
#endif
//Response Body Empty
responseBodyStream = new TcpRawProtocolBodyStream(stream, null, true);
await responseBodyStream.FlushAsync(cancellationToken);
#if NETSTANDARD2_0
responseBodyStream.Dispose();
#else
await responseBodyStream.DisposeAsync();
#endif
client.Dispose();
return;
}
throw new Exception("Invalid Request");
}
catch (Exception ex)
{
if (ex is IOException ioException)
{
if (ioException.InnerException != null && ioException.InnerException is SocketException socketException)
{
if (socketException.SocketErrorCode == SocketError.ConnectionAborted)
{
if (responseBodyStream != null)
{
#if NETSTANDARD2_0
responseBodyStream.Dispose();
#else
await responseBodyStream.DisposeAsync();
#endif
}
if (requestBodyStream != null)
{
#if NETSTANDARD2_0
requestBodyStream.Dispose();
#else
await requestBodyStream.DisposeAsync();
#endif
}
if (stream != null)
{
#if NETSTANDARD2_0
stream.Dispose();
#else
await stream.DisposeAsync();
#endif
}
return;
}
}
}
_ = Log.ErrorAsync(null, ex);
if (client.Connected && !responseStarted && requestHeader != null && requestHeader.ContentType.HasValue)
{
try
{
//Response Header for Error
var responseHeaderLength = TcpRawCommon.BufferErrorHeader(buffer, requestHeader.ProviderType, requestHeader.ContentType.Value);
#if NETSTANDARD2_0
await stream.WriteAsync(bufferOwner, 0, responseHeaderLength, cancellationToken);
#else
await stream.WriteAsync(buffer.Slice(0, responseHeaderLength), cancellationToken);
#endif
//Response Body
responseBodyStream = new TcpRawProtocolBodyStream(stream, null, true);
if (encryptionKey != null)
{
responseBodyCryptoStream = networkType switch
{
NetworkType.Internal => SymmetricEncryptor.Encrypt(encryptionAlgorithm, encryptionKey, responseBodyStream, true, false),
NetworkType.Api => throw new NotSupportedException($"Encryption Not Supported for Network Type {EnumName.GetEnumName(networkType)}"),
_ => throw new NotImplementedException(),
};
await ContentTypeSerializer.SerializeExceptionAsync(requestHeader.ContentType.Value, responseBodyCryptoStream, ex);
#if NET5_0_OR_GREATER
await responseBodyCryptoStream.FlushFinalBlockAsync();
#else
responseBodyCryptoStream.FlushFinalBlock();
#endif
#if NETSTANDARD2_0
responseBodyCryptoStream.Dispose();
#else
await responseBodyCryptoStream.DisposeAsync();
#endif
}
else
{
await ContentTypeSerializer.SerializeExceptionAsync(requestHeader.ContentType.Value, responseBodyStream, ex);
#if NETSTANDARD2_0
responseBodyStream.Dispose();
#else
await responseBodyStream.DisposeAsync();
#endif
}
client.Dispose();
}
catch (Exception ex2)
{
if (responseBodyStream != null)
{
#if NETSTANDARD2_0
responseBodyStream.Dispose();
#else
await responseBodyStream.DisposeAsync();
#endif
}
if (stream != null)
{
#if NETSTANDARD2_0
stream.Dispose();
#else
await stream.DisposeAsync();
#endif
}
client.Dispose();
_ = Log.ErrorAsync($"{nameof(TcpRawCQRSServer)} Error {client.Client.RemoteEndPoint}", ex2);
}
return;
}
if (responseBodyStream != null)
{
#if NETSTANDARD2_0
responseBodyStream.Dispose();
#else
await responseBodyStream.DisposeAsync();
#endif
}
if (requestBodyStream != null)
{
#if NETSTANDARD2_0
requestBodyStream.Dispose();
#else
await requestBodyStream.DisposeAsync();
#endif
}
if (stream != null)
{
#if NETSTANDARD2_0
stream.Dispose();
#else
await stream.DisposeAsync();
#endif
}
client.Dispose();
}
finally
{
BufferArrayPool <byte> .Return(bufferOwner);
}
}
private async Task ListeningThread(IConnection connection, Func <IEvent, Task> handlerAsync)
{
canceller = new CancellationTokenSource();
retry:
try
{
if (this.channel != null)
{
throw new Exception("Exchange already open");
}
this.channel = connection.CreateModel();
this.channel.ExchangeDeclare(this.exchange, "fanout");
var queueName = this.channel.QueueDeclare().QueueName;
this.channel.QueueBind(queueName, this.exchange, String.Empty);
var consumer = new AsyncEventingBasicConsumer(this.channel);
consumer.Received += async(sender, e) =>
{
bool isEncrypted = e.BasicProperties.Headers != null && e.BasicProperties.Headers.Keys.Contains("Encryption") == true;
var stopwatch = new Stopwatch();
stopwatch.Start();
var properties = e.BasicProperties;
var acknowledgment = new Acknowledgement();
if (!isEncrypted && encryptionKey != null)
{
acknowledgment.Success = false;
acknowledgment.ErrorMessage = "Encryption Required";
}
else
{
try
{
byte[] body = e.Body;
if (isEncrypted)
{
body = SymmetricEncryptor.Decrypt(encryptionAlgorithm, encryptionKey, e.Body);
}
var rabbitMessage = RabbitMQCommon.Deserialize <RabbitMQEventMessage>(body);
if (rabbitMessage.Claims != null)
{
var claimsIdentity = new ClaimsIdentity(rabbitMessage.Claims.Select(x => new Claim(x[0], x[1])), "CQRS");
System.Threading.Thread.CurrentPrincipal = new ClaimsPrincipal(claimsIdentity);
}
await handlerAsync(rabbitMessage.Message);
stopwatch.Stop();
_ = Log.TraceAsync($"Received: {e.Exchange} {stopwatch.ElapsedMilliseconds}");
acknowledgment.Success = true;
}
catch (Exception ex)
{
stopwatch.Stop();
ex = ex.GetBaseException();
acknowledgment.Success = false;
acknowledgment.ErrorMessage = ex.Message;
_ = Log.TraceAsync($"Error: Received: {e.Exchange} {acknowledgment.ErrorMessage} {stopwatch.ElapsedMilliseconds}");
_ = Log.ErrorAsync(null, ex);
}
}
};
this.channel.BasicConsume(queueName, false, consumer);
}
catch (Exception ex)
{
_ = Log.ErrorAsync(ex);
if (!canceller.IsCancellationRequested)
{
if (channel != null)
{
channel.Close();
channel.Dispose();
channel = null;
}
await Task.Delay(retryDelay);
goto retry;
}
}
canceller.Dispose();
canceller = null;
if (channel != null)
{
channel.Close();
channel.Dispose();
channel = null;
}
IsOpen = false;
}
public ICollection <TModel> DecryptModels(ICollection <TModel> models, Graph <TModel> graph, bool newCopy)
{
if (!this.Enabled)
{
return(models);
}
var properties = GetEncryptableProperties(typeof(TModel), this.Properties);
if (properties.Length == 0)
{
return(models);
}
graph = new Graph <TModel>(graph);
if (newCopy)
{
models = Mapper.Map <ICollection <TModel>, TModel[]>(models, graph);
}
foreach (TModel model in models)
{
foreach (var property in properties)
{
if (graph.HasLocalProperty(property.Name))
{
if (property.TypeDetail.CoreType == CoreType.String)
{
string encrypted = (string)property.Getter(model);
if (encrypted != null)
{
try
{
if (encrypted.Length > encryptionPrefix.Length && encrypted.Substring(0, encryptionPrefix.Length) == encryptionPrefix)
{
encrypted = encrypted.Substring(encryptionPrefix.Length, encrypted.Length - encryptionPrefix.Length);
string plain = SymmetricEncryptor.Decrypt(encryptionAlgorithm, EncryptionKey, encrypted);
property.Setter(model, plain);
}
}
catch { }
}
}
else if (property.Type == typeof(byte[]))
{
byte[] encrypted = (byte[])property.Getter(model);
if (encrypted != null)
{
try
{
byte[] plain = SymmetricEncryptor.Decrypt(encryptionAlgorithm, EncryptionKey, encrypted);
property.Setter(model, plain);
}
catch { }
}
}
}
}
}
return(models);
}
private void demoButton_Click(object sender, System.EventArgs e)
{
SymmetricEncryptor se = null;
try
{
// SymmetricEncryptor-Instanz erzeugen und den eigenen Schlüssel und
// Initialisierungsvektor übergeben
se = new SymmetricEncryptor(SymmetricEncryptAlgorithm.Rijndael);
se.Key = "dfd0ß3q3ßdsäfßq3#sfjbxya<xsd-:,?";
se.IV = "460?-B,-7,kerkh-";
// Einige Informationen ausgeben
infoTextBox.AppendText("Schlüssel: " + se.Key + "\r\n");
infoTextBox.AppendText("Initialisierungsvektor: " + se.IV + "\r\n");
infoTextBox.AppendText("Chiffrier-Modus: " +
Enum.GetName(typeof(CipherMode), se.CipherMode) + "\r\n");
infoTextBox.AppendText("Blockgröße: " + se.BlockSize + "\r\n");
infoTextBox.AppendText("Padding-Modus: " +
Enum.GetName(typeof(PaddingMode), se.PaddingMode) + "\r\n");
infoTextBox.AppendText("\r\n");;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
// Einen String verschlüsseln und wieder entschlüsseln
string sourceString = "Das ist ein Test-String mit Umlauten: äöü";
string encryptedString = se.Encrypt(sourceString);
string decryptedString = se.Decrypt(encryptedString);
infoTextBox.AppendText("Quellstring: " + sourceString + "\r\n");
infoTextBox.AppendText("Verschlüsselt: " + encryptedString + "\r\n");
infoTextBox.AppendText("Entschlüsselt: " + decryptedString + "\r\n");
infoTextBox.AppendText("\r\n");;
// Eine Datei verschlüsseln
string sourceFileName = Path.Combine(Application.StartupPath,
"Hitchhiker.txt");
string destFileName = Path.Combine(Application.StartupPath,
"Hitchhiker_Encrypted.txt");
FileStream sourceStream = new FileStream(sourceFileName, FileMode.Open,
FileAccess.Read);
FileStream destStream = new FileStream(destFileName, FileMode.Create,
FileAccess.Write);
se.Encrypt(sourceStream, destStream);
sourceStream.Close();
destStream.Close();
// Die Datei wieder entschlüsseln
sourceFileName = Path.Combine(Application.StartupPath,
"Hitchhiker_Encrypted.txt");
destFileName = Path.Combine(Application.StartupPath,
"Hitchhiker_Decrypted.txt");
sourceStream = new FileStream(sourceFileName, FileMode.Open, FileAccess.Read);
destStream = new FileStream(destFileName, FileMode.Create, FileAccess.Write);
se.Decrypt(sourceStream, destStream);
sourceStream.Close();
destStream.Close();
// MemoryStream ver- und entschlüsseln
MemoryStream decryptedData = new MemoryStream(
new Byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 });
// Streamdaten ausgeben
infoTextBox.AppendText("Originaler MemoryStream:\r\n");
int value;
while ((value = decryptedData.ReadByte()) > -1)
{
infoTextBox.AppendText(value + " ");
}
decryptedData.Seek(0, SeekOrigin.Begin);
infoTextBox.AppendText("\r\n\r\n");
// MemoryStream verschlüsseln
MemoryStream encryptedData = new MemoryStream();
se.Encrypt(decryptedData, encryptedData);
// Streamdaten ausgeben
infoTextBox.AppendText("Verschlüsselter MemoryStream:\r\n");
encryptedData.Seek(0, SeekOrigin.Begin);
while ((value = encryptedData.ReadByte()) > -1)
{
infoTextBox.AppendText(value + " ");
}
encryptedData.Seek(0, SeekOrigin.Begin);
infoTextBox.AppendText("\r\n\r\n");
// MemoryStream entschlüsseln
decryptedData.Close();
decryptedData = new MemoryStream();
se.Decrypt(encryptedData, decryptedData);
// Ergebnis ausgeben
infoTextBox.AppendText("Entschlüsselter MemoryStream:\r\n");
decryptedData.Seek(0, SeekOrigin.Begin);
while ((value = decryptedData.ReadByte()) > -1)
{
infoTextBox.AppendText(value + " ");
}
infoTextBox.AppendText("\r\n\r\n");
// Streams schließen
encryptedData.Close();
decryptedData.Close();
}
public async Task ListeningThread(string host, Func <IEvent, Task> handlerAsync)
{
canceller = new CancellationTokenSource();
retry:
IConsumer <string, byte[]> consumer = null;
try
{
await KafkaCommon.AssureTopic(host, topic);
var consumerConfig = new ConsumerConfig();
consumerConfig.BootstrapServers = host;
consumerConfig.GroupId = Guid.NewGuid().ToString();
consumerConfig.EnableAutoCommit = false;
consumer = new ConsumerBuilder <string, byte[]>(consumerConfig).Build();
consumer.Subscribe(topic);
for (; ;)
{
try
{
if (canceller.Token.IsCancellationRequested)
{
break;
}
var consumerResult = consumer.Consume(canceller.Token);
consumer.Commit(consumerResult);
if (consumerResult.Message.Key == KafkaCommon.MessageKey)
{
var stopwatch = new Stopwatch();
stopwatch.Start();
byte[] body = consumerResult.Message.Value;
if (encryptionKey != null)
{
body = SymmetricEncryptor.Decrypt(encryptionAlgorithm, encryptionKey, body);
}
var message = KafkaCommon.Deserialize <KafkaEventMessage>(body);
if (message.Claims != null)
{
var claimsIdentity = new ClaimsIdentity(message.Claims.Select(x => new Claim(x[0], x[1])), "CQRS");
Thread.CurrentPrincipal = new ClaimsPrincipal(claimsIdentity);
}
await handlerAsync(message.Message);
stopwatch.Stop();
_ = Log.TraceAsync($"Received Await: {topic} {stopwatch.ElapsedMilliseconds}");
}
else
{
_ = Log.ErrorAsync($"{nameof(KafkaServer)} unrecognized message key {consumerResult.Message.Key}");
}
}
catch (TaskCanceledException)
{
break;
}
catch (Exception ex)
{
_ = Log.TraceAsync($"Error: Received Await: {topic}");
_ = Log.ErrorAsync(ex);
}
}
consumer.Unsubscribe();
}
catch (Exception ex)
{
_ = Log.ErrorAsync(ex);
if (consumer != null)
{
consumer.Dispose();
}
consumer = null;
if (!canceller.IsCancellationRequested)
{
await Task.Delay(retryDelay);
goto retry;
}
}
canceller.Dispose();
canceller = null;
if (consumer != null)
{
consumer.Dispose();
}
IsOpen = false;
}
private async Task ListeningThread(string host, Func <ICommand, Task> handlerAsync, Func <ICommand, Task> handlerAwaitAsync)
{
canceller = new CancellationTokenSource();
retry:
IConsumer <string, byte[]> consumer = null;
try
{
await KafkaCommon.AssureTopic(host, topic);
var consumerConfig = new ConsumerConfig();
consumerConfig.BootstrapServers = host;
consumerConfig.GroupId = topic;
consumerConfig.EnableAutoCommit = false;
consumer = new ConsumerBuilder <string, byte[]>(consumerConfig).Build();
consumer.Subscribe(topic);
for (; ;)
{
Exception error = null;
bool awaitResponse = false;
string ackTopic = null;
string ackKey = null;
try
{
if (canceller.Token.IsCancellationRequested)
{
break;
}
var consumerResult = consumer.Consume(canceller.Token);
consumer.Commit(consumerResult);
awaitResponse = consumerResult.Message.Key == KafkaCommon.MessageWithAckKey;
if (awaitResponse)
{
ackTopic = Encoding.UTF8.GetString(consumerResult.Message.Headers.GetLastBytes(KafkaCommon.AckTopicHeader));
ackKey = Encoding.UTF8.GetString(consumerResult.Message.Headers.GetLastBytes(KafkaCommon.AckKeyHeader));
}
if (consumerResult.Message.Key == KafkaCommon.MessageKey || awaitResponse)
{
var stopwatch = new Stopwatch();
stopwatch.Start();
byte[] body = consumerResult.Message.Value;
if (encryptionKey != null)
{
body = SymmetricEncryptor.Decrypt(encryptionAlgorithm, encryptionKey, body);
}
var message = KafkaCommon.Deserialize <KafkaCommandMessage>(body);
if (message.Claims != null)
{
var claimsIdentity = new ClaimsIdentity(message.Claims.Select(x => new Claim(x[0], x[1])), "CQRS");
Thread.CurrentPrincipal = new ClaimsPrincipal(claimsIdentity);
}
if (awaitResponse)
{
await handlerAwaitAsync(message.Message);
}
else
{
await handlerAsync(message.Message);
}
stopwatch.Stop();
_ = Log.TraceAsync($"Received Await: {topic} {stopwatch.ElapsedMilliseconds}");
}
else
{
_ = Log.ErrorAsync($"{nameof(KafkaServer)} unrecognized message key {consumerResult.Message.Key}");
}
}
catch (TaskCanceledException)
{
break;
}
catch (Exception ex)
{
_ = Log.TraceAsync($"Error: Received Await: {topic}");
_ = Log.ErrorAsync(ex);
error = ex;
}
if (awaitResponse)
{
IProducer <string, byte[]> producer = null;
try
{
var producerConfig = new ProducerConfig();
producerConfig.BootstrapServers = host;
producerConfig.ClientId = clientID;
producer = new ProducerBuilder <string, byte[]>(producerConfig).Build();
var ack = new Acknowledgement()
{
Success = error == null,
ErrorMessage = error?.Message
};
var body = KafkaCommon.Serialize(ack);
if (encryptionKey != null)
{
body = SymmetricEncryptor.Encrypt(encryptionAlgorithm, encryptionKey, body);
}
await producer.ProduceAsync(ackTopic, new Message <string, byte[]>() { Key = ackKey, Value = body });
}
catch (Exception ex)
{
_ = Log.ErrorAsync(ex);
}
finally
{
if (producer != null)
{
producer.Dispose();
}
}
}
}
consumer.Unsubscribe();
}
catch (Exception ex)
{
_ = Log.ErrorAsync(ex);
if (consumer != null)
{
consumer.Dispose();
}
consumer = null;
if (!canceller.IsCancellationRequested)
{
await Task.Delay(retryDelay);
goto retry;
}
}
canceller.Dispose();
canceller = null;
if (consumer != null)
{
consumer.Dispose();
}
IsOpen = false;
}
private async Task AckListeningThread()
{
await KafkaCommon.AssureTopic(host, ackTopic);
var consumerConfig = new ConsumerConfig();
consumerConfig.BootstrapServers = host;
consumerConfig.GroupId = ackTopic;
consumerConfig.EnableAutoCommit = false;
IConsumer <string, byte[]> consumer = null;
try
{
consumer = new ConsumerBuilder <string, byte[]>(consumerConfig).Build();
consumer.Subscribe(ackTopic);
for (; ;)
{
try
{
if (canceller.Token.IsCancellationRequested)
{
break;
}
var consumerResult = consumer.Consume(canceller.Token);
consumer.Commit(consumerResult);
if (!ackCallbacks.TryRemove(consumerResult.Message.Key, out Action <Acknowledgement> callback))
{
continue;
}
var response = consumerResult.Message.Value;
if (encryptionKey != null)
{
response = SymmetricEncryptor.Decrypt(encryptionAlgorithm, encryptionKey, response);
}
var ack = KafkaCommon.Deserialize <Acknowledgement>(response);
callback(ack);
}
catch (TaskCanceledException)
{
break;
}
catch { }
}
consumer.Unsubscribe();
await KafkaCommon.DeleteTopic(host, ackTopic);
}
finally
{
canceller.Dispose();
if (consumer != null)
{
consumer.Dispose();
}
}
}
