private async Task InitialiseCommunicationLayer()
{
await Connection.Open();
var connectionReader = new StreamReader(Connection.ConnectionStream, new UTF8Encoding(false));
var connectionWriter = new StreamWriter(Connection.ConnectionStream, new UTF8Encoding(false));
connectionWriter.NewLine = "\n";
Trace.WriteLine("Connection open");
RequestReader = new RequestReader(connectionReader);
ResponseWriter = new ResponseWriter(connectionWriter);
Trace.WriteLine("Starting to listen for requests");
}
public async Task Process()
{
bool restartConnection = true;
try
{
Trace.WriteLine("Starting Controller.Process");
while (true)
{
if (restartConnection)
{
await InitialiseCommunicationLayer();
}
try
{
await ProcessStreamObjects().ConfigureAwait(false);
restartConnection = true;
}
catch (Neo4jException ex)
{
// Generate "driver" exception something happened within the driver
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
restartConnection = false;
}
catch (NotSupportedException ex)
{
// Get this sometimes during protocol handshake, like when connectiong with bolt:// on server
// with TLS. Could be a dirty read in the driver or a write from TLS server that causes strange
// version received..
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
restartConnection = false;
}
catch (IOException ex)
{
Trace.WriteLine($"Socket exception detected: {ex.Message}"); //Handled outside of the exception manager because there is no connection to reply on.
restartConnection = true;
}
finally
{
if (restartConnection)
{
Trace.WriteLine("Closing Connection");
Connection.Close();
}
}
Trace.Flush();
}
}
catch (Exception ex)
{
Trace.WriteLine($"It looks like the ExceptionExtensions system has failed in an unexpected way. \n{ex}");
}
finally
{
Connection.StopServer();
}
}
public async Task SendResponse(string response)
{
await ResponseWriter.WriteResponseAsync(response);
}
public async Task SendResponse(IProtocolObject protocolObject)
{
await ResponseWriter.WriteResponseAsync(protocolObject).ConfigureAwait(false);
}
public async Task Process()
{
bool restartConnection = true;
try
{
Trace.WriteLine("Starting Controller.Process");
while (true)
{
if (restartConnection)
{
await InitialiseCommunicationLayer();
}
try
{
await ProcessStreamObjects().ConfigureAwait(false);
restartConnection = true;
}
catch (Neo4jException ex)
{
// Generate "driver" exception something happened within the driver
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
restartConnection = false;
}
catch (NotSupportedException ex)
{
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
restartConnection = false;
}
catch (JsonSerializationException ex)
{
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
restartConnection = false;
}
catch (TestKitProtocolException ex)
{
Trace.WriteLine($"TestKit protocol exception detected: {ex.Message}");
restartConnection = true;
}
catch (IOException ex)
{
Trace.WriteLine($"Socket exception detected: {ex.Message}"); //Handled outside of the exception manager because there is no connection to reply on.
restartConnection = true;
}
finally
{
if (restartConnection)
{
Trace.WriteLine("Closing Connection");
Connection.Close();
}
}
Trace.Flush();
}
}
catch (Exception ex)
{
Trace.WriteLine($"It looks like the ExceptionExtensions system has failed in an unexpected way. \n{ex}");
}
finally
{
Connection.StopServer();
}
}
public async Task Process(bool restartInitialState, Func <Exception, bool> loopConditional)
{
bool restartConnection = restartInitialState;
Trace.WriteLine("Starting Controller.Process");
Exception storedException = new TestKitClientException("Error from client");
while (loopConditional(storedException))
{
if (restartConnection)
{
await InitialiseCommunicationLayer();
}
try
{
await ProcessStreamObjects().ConfigureAwait(false);
}
catch (Neo4jException ex) //TODO: sort this catch list out...reduce it down using where clauses?
{
// Generate "driver" exception something happened within the driver
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
storedException = ex;
restartConnection = false;
}
catch (TestKitClientException ex)
{
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
storedException = ex;
restartConnection = false;
}
catch (ArgumentException ex)
{
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
storedException = ex;
restartConnection = false;
}
catch (NotSupportedException ex)
{
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
storedException = ex;
restartConnection = false;
}
catch (JsonSerializationException ex)
{
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
storedException = ex;
restartConnection = false;
}
catch (TestKitProtocolException ex)
{
Trace.WriteLine($"TestKit protocol exception detected: {ex.Message}");
await ResponseWriter.WriteResponseAsync(ExceptionManager.GenerateExceptionResponse(ex));
storedException = ex;
restartConnection = true;
}
catch (IOException ex)
{
Trace.WriteLine($"Socket exception detected: {ex.Message}"); //Handled outside of the exception manager because there is no connection to reply on.
storedException = ex;
restartConnection = true;
}
catch (Exception ex)
{
Trace.WriteLine($"General exception detected, restarting connection: {ex.Message}");
storedException = ex;
restartConnection = true;
}
finally
{
if (restartConnection)
{
Trace.WriteLine("Closing Connection");
Connection.Close();
}
}
Trace.Flush();
}
}
