public Receive DoSend(RequestOrResponse request, bool readResponse = true)
{
lock (@lock)
{
this.VerifyRequest(request);
this.GetOrMakeConnection();
Receive response = null;
try
{
this.blockingChannel.Send(request);
if (readResponse)
{
response = this.blockingChannel.Receive();
}
else
{
Logger.Debug("Skipping reading response");
}
}
catch (IOException)
{
// no way to tell if write succeeded. Disconnect and re-throw exception to let client handle retry
this.Disconnect();
throw;
}
return response;
}
}
public BoundedByteBufferSend(RequestOrResponse request) : this(request.SizeInBytes + (request.RequestId.HasValue ? 2 : 0))
{
if (request.RequestId.HasValue)
{
this.Buffer.PutShort(request.RequestId.Value);
}
request.WriteTo(this.Buffer);
this.Buffer.Rewind();
}
private void VerifyRequest(RequestOrResponse request)
{
/**
* This seems a little convoluted, but the idea is to turn on verification simply changing log4j settings
* Also, when verification is turned on, care should be taken to see that the logs don't fill up with unnecessary
* Data. So, leaving the rest of the logging at TRACE, while errors should be logged at ERROR level
*/
if (Logger.IsDebugEnabled)
{
var buffer = new BoundedByteBufferSend(request).Buffer;
Logger.Debug("Verifying sendbuffer of size " + buffer.Limit());
var requestTypeId = buffer.GetShort();
if (requestTypeId == RequestKeys.ProduceKey)
{
var innerRequest = ProducerRequest.ReadFrom(buffer);
Logger.Debug(innerRequest.ToString());
}
}
}
private Receive SendRequest(RequestOrResponse request)
{
lock (@lock)
{
this.GetOrMakeConnection();
Receive response;
try
{
this.blockingChannel.Send(request);
response = this.blockingChannel.Receive();
}
catch (Exception e)
{
Logger.WarnFormat("Reconnect due to socket error {0}", e.Message);
// retry once
try
{
this.Reconnect();
this.blockingChannel.Send(request);
response = this.blockingChannel.Receive();
}
catch (Exception)
{
this.Disconnect();
throw;
}
}
return response;
}
}
public int Send(RequestOrResponse request)
{
if (!this.conneted)
{
throw new IOException("Channel is closed!");
}
var send = new BoundedByteBufferSend(request);
return send.WriteCompletely(this.writeChannel);
}