| /* |
| * |
| * 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.Collections; |
| using log4net; |
| using Apache.Qpid.Buffer; |
| using Apache.Qpid.Codec; |
| using Apache.Qpid.Codec.Support; |
| using Apache.Qpid.Framing; |
| |
| namespace Apache.Qpid.Client.Transport |
| { |
| public class AmqpChannel : IProtocolChannel |
| { |
| // Warning: don't use this log for regular logging. |
| static readonly ILog _protocolTraceLog = LogManager.GetLogger("TRACE.Qpid.Client.ProtocolChannel"); |
| |
| IByteChannel _byteChannel; |
| IProtocolEncoder _encoder; |
| IProtocolDecoder _decoder; |
| IProtocolDecoderOutput _decoderOutput; |
| private object _syncLock; |
| |
| public AmqpChannel(IByteChannel byteChannel, IProtocolDecoderOutput decoderOutput) |
| { |
| _byteChannel = byteChannel; |
| _decoderOutput = decoderOutput; |
| _syncLock = new object(); |
| |
| AMQProtocolProvider protocolProvider = new AMQProtocolProvider(); |
| IProtocolCodecFactory factory = protocolProvider.CodecFactory; |
| _encoder = factory.Encoder; |
| _decoder = factory.Decoder; |
| } |
| |
| public void Read() |
| { |
| ByteBuffer buffer = _byteChannel.Read(); |
| Decode(buffer); |
| } |
| |
| public IAsyncResult BeginRead(AsyncCallback callback, object state) |
| { |
| return _byteChannel.BeginRead(callback, state); |
| } |
| |
| public void EndRead(IAsyncResult result) |
| { |
| ByteBuffer buffer = _byteChannel.EndRead(result); |
| Decode(buffer); |
| } |
| |
| public void Write(IDataBlock o) |
| { |
| // TODO: Refactor to decorator. |
| if (_protocolTraceLog.IsDebugEnabled) |
| { |
| _protocolTraceLog.Debug(String.Format("WRITE {0}", o)); |
| } |
| // we should be doing an async write, but apparently |
| // the mentalis library doesn't queue async read/writes |
| // correctly and throws random IOException's. Stay sync for a while |
| //_byteChannel.BeginWrite(Encode(o), OnAsyncWriteDone, null); |
| _byteChannel.Write(Encode(o)); |
| } |
| |
| // not used for now |
| //private void OnAsyncWriteDone(IAsyncResult result) |
| //{ |
| // _byteChannel.EndWrite(result); |
| //} |
| |
| private void Decode(ByteBuffer buffer) |
| { |
| // make sure we don't try to decode more than |
| // one buffer at the same time |
| lock ( _syncLock ) |
| { |
| _decoder.Decode(buffer, _decoderOutput); |
| } |
| } |
| |
| private ByteBuffer Encode(object o) |
| { |
| SingleProtocolEncoderOutput output = new SingleProtocolEncoderOutput(); |
| _encoder.Encode(o, output); |
| return output.buffer; |
| } |
| |
| } |
| } |
| |
| |