| /* |
| * 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.server.transport; |
| |
| import java.io.IOException; |
| import java.security.Principal; |
| import java.security.cert.Certificate; |
| import java.util.Collection; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.qpid.bytebuffer.QpidByteBuffer; |
| |
| public class NonBlockingConnectionPlainDelegate implements NonBlockingConnectionDelegate |
| { |
| private static final Logger LOGGER = LoggerFactory.getLogger(NonBlockingConnectionPlainDelegate.class); |
| |
| private final SchedulableConnection _parent; |
| private final int _networkBufferSize; |
| private volatile QpidByteBuffer _netInputBuffer; |
| |
| public NonBlockingConnectionPlainDelegate(SchedulableConnection parent, int networkBufferSize) |
| { |
| _parent = parent; |
| _networkBufferSize = networkBufferSize; |
| _netInputBuffer = QpidByteBuffer.allocateDirect(_networkBufferSize); |
| } |
| |
| @Override |
| public boolean readyForRead() |
| { |
| return true; |
| } |
| |
| @Override |
| public boolean processData() |
| { |
| _netInputBuffer.flip(); |
| _parent.processAmqpData(_netInputBuffer); |
| |
| restoreApplicationBufferForWrite(); |
| |
| return false; |
| } |
| |
| protected void restoreApplicationBufferForWrite() |
| { |
| QpidByteBuffer oldNetInputBuffer = _netInputBuffer; |
| int unprocessedDataLength = _netInputBuffer.remaining(); |
| _netInputBuffer.limit(_netInputBuffer.capacity()); |
| _netInputBuffer = oldNetInputBuffer.slice(); |
| _netInputBuffer.limit(unprocessedDataLength); |
| oldNetInputBuffer.dispose(); |
| if (_netInputBuffer.limit() != _netInputBuffer.capacity()) |
| { |
| _netInputBuffer.position(_netInputBuffer.limit()); |
| _netInputBuffer.limit(_netInputBuffer.capacity()); |
| } |
| else |
| { |
| QpidByteBuffer currentBuffer = _netInputBuffer; |
| int newBufSize; |
| |
| if (currentBuffer.capacity() < _networkBufferSize) |
| { |
| newBufSize = _networkBufferSize; |
| } |
| else |
| { |
| newBufSize = currentBuffer.capacity() + _networkBufferSize; |
| _parent.reportUnexpectedByteBufferSizeUsage(); |
| } |
| |
| _netInputBuffer = QpidByteBuffer.allocateDirect(newBufSize); |
| _netInputBuffer.put(currentBuffer); |
| currentBuffer.dispose(); |
| } |
| |
| } |
| |
| |
| @Override |
| public boolean doWrite(Collection<QpidByteBuffer> bufferArray) throws IOException |
| { |
| long bytesToWrite = 0l; |
| if(!bufferArray.isEmpty()) |
| { |
| for (QpidByteBuffer buf : bufferArray) |
| { |
| bytesToWrite += buf.remaining(); |
| } |
| } |
| return bytesToWrite == 0l || _parent.writeToTransport(bufferArray) >= bytesToWrite; |
| |
| } |
| |
| @Override |
| public Principal getPeerPrincipal() |
| { |
| return null; |
| } |
| |
| @Override |
| public Certificate getPeerCertificate() |
| { |
| return null; |
| } |
| |
| @Override |
| public boolean needsWork() |
| { |
| return false; |
| } |
| |
| @Override |
| public QpidByteBuffer getNetInputBuffer() |
| { |
| return _netInputBuffer; |
| } |
| |
| @Override |
| public void shutdownInput() |
| { |
| if (_netInputBuffer != null) |
| { |
| _netInputBuffer.dispose(); |
| _netInputBuffer = null; |
| } |
| } |
| |
| @Override |
| public void shutdownOutput() |
| { |
| |
| } |
| |
| @Override |
| public String getTransportInfo() |
| { |
| return ""; |
| } |
| } |