| /* |
| * 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.tests.protocol.v1_0; |
| |
| import java.util.concurrent.BlockingQueue; |
| |
| import io.netty.buffer.ByteBuf; |
| import io.netty.channel.ChannelHandlerContext; |
| import io.netty.channel.ChannelInboundHandlerAdapter; |
| import io.netty.util.ReferenceCountUtil; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.qpid.server.bytebuffer.QpidByteBuffer; |
| import org.apache.qpid.server.protocol.v1_0.ConnectionHandler; |
| import org.apache.qpid.server.protocol.v1_0.codec.ValueHandler; |
| import org.apache.qpid.server.protocol.v1_0.framing.FrameHandler; |
| import org.apache.qpid.server.protocol.v1_0.type.FrameBody; |
| import org.apache.qpid.server.protocol.v1_0.type.SaslFrameBody; |
| import org.apache.qpid.server.protocol.v1_0.type.UnsignedShort; |
| import org.apache.qpid.server.protocol.v1_0.type.codec.AMQPDescribedTypeRegistry; |
| import org.apache.qpid.server.protocol.v1_0.type.security.SaslChallenge; |
| import org.apache.qpid.server.protocol.v1_0.type.security.SaslInit; |
| import org.apache.qpid.server.protocol.v1_0.type.security.SaslMechanisms; |
| import org.apache.qpid.server.protocol.v1_0.type.security.SaslOutcome; |
| import org.apache.qpid.server.protocol.v1_0.type.security.SaslResponse; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.Attach; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.Begin; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.Close; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.Detach; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.Disposition; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.End; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.Error; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.Flow; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.Open; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.Transfer; |
| |
| public class InputHandler extends ChannelInboundHandlerAdapter |
| { |
| private enum ParsingState |
| { |
| HEADER, |
| PERFORMATIVES |
| }; |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(InputHandler.class); |
| private static final AMQPDescribedTypeRegistry TYPE_REGISTRY = AMQPDescribedTypeRegistry.newInstance() |
| .registerTransportLayer() |
| .registerMessagingLayer() |
| .registerTransactionLayer() |
| .registerSecurityLayer(); |
| private final ValueHandler _valueHandler; |
| private final FrameHandler _frameHandler; |
| |
| private QpidByteBuffer _inputBuffer = QpidByteBuffer.allocate(0); |
| private BlockingQueue<Response> _responseQueue; |
| private ParsingState _state = ParsingState.HEADER; |
| |
| public InputHandler(final BlockingQueue<Response> queue) |
| { |
| |
| _valueHandler = new ValueHandler(TYPE_REGISTRY); |
| _frameHandler = new FrameHandler(_valueHandler, new MyConnectionHandler(), false); |
| |
| _responseQueue = queue; |
| } |
| |
| @Override |
| public void channelRead(final ChannelHandlerContext ctx, final Object msg) throws Exception |
| { |
| // TODO does Netty take care of saving the remaining bytes??? |
| ByteBuf buf = (ByteBuf) msg; |
| QpidByteBuffer qpidBuf = QpidByteBuffer.wrap(buf.nioBuffer()); |
| |
| if (_inputBuffer.hasRemaining()) |
| { |
| QpidByteBuffer old = _inputBuffer; |
| _inputBuffer = QpidByteBuffer.allocate(_inputBuffer.remaining() + qpidBuf.remaining()); |
| _inputBuffer.put(old); |
| _inputBuffer.put(qpidBuf); |
| old.dispose(); |
| qpidBuf.dispose(); |
| _inputBuffer.flip(); |
| } |
| else |
| { |
| _inputBuffer.dispose(); |
| _inputBuffer = qpidBuf; |
| } |
| |
| doParsing(); |
| |
| if (_inputBuffer.hasRemaining()) |
| { |
| _inputBuffer.compact(); |
| } |
| |
| ReferenceCountUtil.release(msg); |
| } |
| |
| private void doParsing() |
| { |
| switch(_state) |
| { |
| case HEADER: |
| if (_inputBuffer.remaining() >= 8) |
| { |
| byte[] header = new byte[8]; |
| _inputBuffer.get(header); |
| _responseQueue.add(new HeaderResponse(header)); |
| _state = ParsingState.PERFORMATIVES; |
| doParsing(); |
| } |
| break; |
| case PERFORMATIVES: |
| _frameHandler.parse(_inputBuffer); |
| break; |
| default: |
| throw new IllegalStateException("Unexpected state : " + _state); |
| } |
| } |
| |
| @Override |
| public void channelReadComplete(final ChannelHandlerContext ctx) throws Exception |
| { |
| LOGGER.debug("KWDEBUG channelReadComplete"); |
| super.channelReadComplete(ctx); |
| } |
| |
| private class MyConnectionHandler implements ConnectionHandler |
| { |
| @Override |
| public void receiveOpen(final short channel, final Open close) |
| { |
| System.out.println(); |
| } |
| |
| @Override |
| public void receiveClose(final short channel, final Close close) |
| { |
| |
| } |
| |
| @Override |
| public void receiveBegin(final short channel, final Begin begin) |
| { |
| |
| } |
| |
| @Override |
| public void receiveEnd(final short channel, final End end) |
| { |
| |
| } |
| |
| @Override |
| public void receiveAttach(final short channel, final Attach attach) |
| { |
| |
| } |
| |
| @Override |
| public void receiveDetach(final short channel, final Detach detach) |
| { |
| |
| } |
| |
| @Override |
| public void receiveTransfer(final short channel, final Transfer transfer) |
| { |
| |
| } |
| |
| @Override |
| public void receiveDisposition(final short channel, final Disposition disposition) |
| { |
| |
| } |
| |
| @Override |
| public void receiveFlow(final short channel, final Flow flow) |
| { |
| |
| } |
| |
| @Override |
| public int getMaxFrameSize() |
| { |
| return 512; |
| } |
| |
| @Override |
| public int getChannelMax() |
| { |
| return UnsignedShort.MAX_VALUE.intValue(); |
| } |
| |
| @Override |
| public void handleError(final Error parsingError) |
| { |
| |
| } |
| |
| @Override |
| public boolean closedForInput() |
| { |
| return false; |
| } |
| |
| @Override |
| public void receive(final short channel, final Object val) |
| { |
| Response response; |
| if (val instanceof FrameBody) |
| { |
| response = new PerformativeResponse(channel, (FrameBody) val); |
| } |
| else if (val instanceof SaslFrameBody) |
| { |
| throw new UnsupportedOperationException("TODO: "); |
| } |
| else |
| { |
| throw new UnsupportedOperationException("Unexoected frame type : " + val.getClass()); |
| } |
| _responseQueue.add(response); |
| |
| } |
| |
| @Override |
| public void receiveSaslInit(final SaslInit saslInit) |
| { |
| |
| } |
| |
| @Override |
| public void receiveSaslMechanisms(final SaslMechanisms saslMechanisms) |
| { |
| |
| } |
| |
| @Override |
| public void receiveSaslChallenge(final SaslChallenge saslChallenge) |
| { |
| |
| } |
| |
| @Override |
| public void receiveSaslResponse(final SaslResponse saslResponse) |
| { |
| |
| } |
| |
| @Override |
| public void receiveSaslOutcome(final SaslOutcome saslOutcome) |
| { |
| |
| } |
| } |
| } |
