diff options
Diffstat (limited to 'java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/transport/AMQPTransport.java')
-rw-r--r-- | java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/transport/AMQPTransport.java | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/transport/AMQPTransport.java b/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/transport/AMQPTransport.java new file mode 100644 index 0000000000..8327cf6f26 --- /dev/null +++ b/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/transport/AMQPTransport.java @@ -0,0 +1,170 @@ +/* + * 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. + */ + +package org.apache.qpid.amqp_1_0.transport; + +import org.apache.qpid.amqp_1_0.codec.FrameWriter; +import org.apache.qpid.amqp_1_0.framing.AMQFrame; +import org.apache.qpid.amqp_1_0.framing.TransportFrame; +import org.apache.qpid.amqp_1_0.type.FrameBody; + +import java.nio.ByteBuffer; + +public class AMQPTransport implements BytesTransport +{ + private volatile boolean _inputOpen = true; + private volatile boolean _outputOpen = true; + + private static final int INPUT_BUFFER_SIZE = 1 << 16; + private static final int OUTPUT_BUFFER_SIZE = 1 << 16; + + + private final CircularBytesBuffer _inputBuffer = new CircularBytesBuffer(INPUT_BUFFER_SIZE); + private TransportFrame _currentInputFrame; + private boolean _readingFrames; + + + private final CircularBytesBuffer _outputBuffer = new CircularBytesBuffer(OUTPUT_BUFFER_SIZE); + + private AMQFrame<FrameBody> _currentOutputFrame; + + + private AMQPFrameTransport _frameTransport; + + private FrameWriter _frameWriter; + + private final BytesProcessor _frameWriterProcessor = new BytesProcessor() + { + public void processBytes(final ByteBuffer buf) + { + _frameWriter.writeToBuffer(buf); + + if(_frameWriter.isComplete()) + { + _currentOutputFrame = null; + } + } + }; + + private StateChangeListener _inputListener; + private StateChangeListener _outputListener; + + + public AMQPTransport(AMQPFrameTransport frameTransport) + { + _frameTransport = frameTransport; + _frameWriter = new FrameWriter(_frameTransport.getRegistry()); + _outputBuffer.put( ByteBuffer.wrap( new byte[] { (byte) 'A', + (byte) 'M', + (byte) 'Q', + (byte) 'P', + (byte) 0, + _frameTransport.getMajorVersion(), + _frameTransport.getMajorVersion(), + _frameTransport.getRevision(), + } ) ); + + + } + + public boolean isOpenForInput() + { + return _inputOpen; + } + + public void inputClosed() + { + _inputOpen = false; + } + + public void processBytes(final ByteBuffer buf) + { + _inputBuffer.put(buf); + + if(!_readingFrames) + { + if(_inputBuffer.size()>=8) + { + final byte[] incomingHeader = new byte[8]; + _inputBuffer.get(new BytesProcessor() + { + public void processBytes(final ByteBuffer buf) + { + buf.get(incomingHeader); + } + }); + _frameTransport.setVersion(incomingHeader[5], incomingHeader[6], incomingHeader[7]); + _readingFrames = true; + } + } + else + { + + } + + + //To change body of implemented methods use File | Settings | File Templates. + } + + public void setInputStateChangeListener(final StateChangeListener listener) + { + _inputListener = listener; + _frameTransport.setInputStateChangeListener(listener); + } + + public void getNextBytes(final BytesProcessor processor) + { + // First try to fill the buffer as much as possible with frames + while(!_outputBuffer.isFull()) + { + if(_currentOutputFrame == null) + { + _currentOutputFrame = _frameTransport.getNextFrame(); + _frameWriter.setValue(_currentOutputFrame); + } + + if(_currentOutputFrame == null) + { + break; + } + + + _outputBuffer.put(_frameWriterProcessor); + + + + } + + } + + public void outputClosed() + { + _outputOpen = false; + } + + public boolean isOpenForOutput() + { + return _outputOpen; + } + + public void setOutputStateChangeListener(final StateChangeListener listener) + { + _outputListener = listener; + } +} |