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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
using System;
using System.IO;
using System.Threading;
using common.org.apache.qpid.transport.util;
using org.apache.qpid.transport.util;
namespace org.apache.qpid.transport.network.io
{
public sealed class IoSender : IIoSender<MemoryStream>
{
private static readonly Logger log = Logger.Get(typeof (IoReceiver));
private readonly IIoTransport ioTransport;
private readonly Stream bufStream;
private bool closed;
private readonly Mutex mutClosed = new Mutex();
private readonly CircularBuffer<byte[]> queue;
private readonly Thread thread;
private readonly int timeout;
private readonly MemoryStream _tobeSent = new MemoryStream();
public IoSender(IIoTransport transport, int queueSize, int timeout)
{
this.timeout = timeout;
ioTransport = transport;
bufStream = transport.Stream;
queue = new CircularBuffer<byte[]>(queueSize);
thread = new Thread(Go);
log.Debug("Creating IoSender thread");
thread.Name = String.Format("IoSender - {0}", transport.Socket) ;
thread.IsBackground = true;
thread.Start();
}
public void Send(MemoryStream str)
{
int pos = (int) str.Position;
str.Seek(0, SeekOrigin.Begin);
Send(str, pos);
}
public void Send(MemoryStream str, int size)
{
mutClosed.WaitOne();
if (closed)
{
throw new TransportException("sender is Closed");
}
mutClosed.ReleaseMutex();
byte[] buf = new byte[size];
str.Read(buf, 0, size);
_tobeSent.Write(buf, 0, size);
}
public void Flush()
{
int length = (int)_tobeSent.Position;
byte[] buf = new byte[length];
_tobeSent.Seek(0, SeekOrigin.Begin);
_tobeSent.Read(buf, 0, length);
queue.Enqueue(buf);
// bufStream.Write(buf, 0, length);
// _tobeSent = new MemoryStream();
// _writer.Write(buf, 0, length);
// _writer.Flush();
_tobeSent.Seek(0, SeekOrigin.Begin);
}
public void Close()
{
log.Debug("Closing Sender");
mutClosed.WaitOne();
if (!closed)
{
try
{
closed = true;
queue.Close();
thread.Join(timeout);
if (thread.IsAlive)
{
throw new TransportException("join timed out");
}
}
catch (ThreadInterruptedException e)
{
throw new TransportException(e);
}
catch (IOException e)
{
throw new TransportException(e);
}
}
mutClosed.ReleaseMutex();
}
private void Go()
{
while (! closed)
{
//MemoryStream st = queue.Dequeue();
byte[] st = queue.Dequeue();
if (st != null)
{
try
{
// int length = (int) st.Length;
// byte[] buf = new byte[length];
// st.Read(buf, 0, length);
bufStream.Write(st, 0, st.Length);
}
catch (Exception e)
{
closed = true;
ioTransport.Connection.On_ReceivedException(this, new ExceptionArgs(e));
}
}
}
}
}
}
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