| /* |
| * |
| * 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.transport.network.io; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.Socket; |
| import java.net.SocketException; |
| import java.net.SocketTimeoutException; |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import javax.net.ssl.SSLSocket; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.qpid.thread.Threading; |
| import org.apache.qpid.transport.ExceptionHandlingByteBufferReceiver; |
| import org.apache.qpid.transport.TransportException; |
| import org.apache.qpid.transport.network.Ticker; |
| import org.apache.qpid.util.SystemUtils; |
| |
| /** |
| * IoReceiver |
| * |
| */ |
| |
| final class IoReceiver implements Runnable |
| { |
| private static final Logger LOGGER = LoggerFactory.getLogger(IoReceiver.class); |
| |
| private final ExceptionHandlingByteBufferReceiver receiver; |
| private final int bufferSize; |
| private final Socket socket; |
| private final long timeout; |
| private final AtomicBoolean closed = new AtomicBoolean(false); |
| private final Thread receiverThread; |
| private static final boolean shutdownBroken; |
| |
| private Ticker _ticker; |
| static |
| { |
| shutdownBroken = SystemUtils.isWindows(); |
| } |
| |
| public IoReceiver(Socket socket, ExceptionHandlingByteBufferReceiver receiver, int bufferSize, long timeout) |
| { |
| this.receiver = receiver; |
| this.bufferSize = bufferSize; |
| this.socket = socket; |
| this.timeout = timeout; |
| |
| try |
| { |
| //Create but deliberately don't start the thread. |
| receiverThread = Threading.getThreadFactory().createThread(this); |
| } |
| catch(Exception e) |
| { |
| throw new RuntimeException("Error creating IOReceiver thread",e); |
| } |
| receiverThread.setDaemon(true); |
| receiverThread.setName(String.format("IoRcvr-%s-%s", |
| socket.getLocalSocketAddress(), |
| socket.getRemoteSocketAddress())); |
| } |
| |
| public void initiate() |
| { |
| receiverThread.start(); |
| } |
| |
| public void close() |
| { |
| close(false); |
| } |
| |
| void close(boolean block) |
| { |
| if (!closed.getAndSet(true)) |
| { |
| try |
| { |
| try |
| { |
| if (shutdownBroken || socket instanceof SSLSocket) |
| { |
| socket.close(); |
| } |
| else |
| { |
| socket.shutdownInput(); |
| } |
| } |
| catch(SocketException se) |
| { |
| if(!socket.isClosed() && !socket.isInputShutdown()) |
| { |
| throw se; |
| } |
| } |
| if (block && Thread.currentThread() != receiverThread) |
| { |
| receiverThread.join(timeout); |
| if (receiverThread.isAlive()) |
| { |
| throw new TransportException("join timed out"); |
| } |
| } |
| } |
| catch (InterruptedException e) |
| { |
| throw new TransportException(e); |
| } |
| catch (IOException e) |
| { |
| throw new TransportException(e); |
| } |
| |
| } |
| } |
| |
| public void run() |
| { |
| final int threshold = bufferSize / 2; |
| |
| // I set the read buffer size similar to SO_RCVBUF |
| // Haven't tested with a lower value to see if it's better or worse |
| byte[] buffer = new byte[bufferSize]; |
| try |
| { |
| InputStream in = socket.getInputStream(); |
| int read = 0; |
| int offset = 0; |
| long currentTime; |
| while(read != -1) |
| { |
| try |
| { |
| while ((read = in.read(buffer, offset, bufferSize-offset)) != -1) |
| { |
| if (read > 0) |
| { |
| ByteBuffer b = ByteBuffer.wrap(buffer,offset,read); |
| receiver.received(b); |
| offset+=read; |
| if (offset > threshold) |
| { |
| offset = 0; |
| buffer = new byte[bufferSize]; |
| } |
| } |
| currentTime = System.currentTimeMillis(); |
| |
| if(_ticker != null) |
| { |
| int tick = _ticker.getTimeToNextTick(currentTime); |
| if(tick <= 0) |
| { |
| tick = _ticker.tick(currentTime); |
| } |
| try |
| { |
| if(!socket.isClosed()) |
| { |
| socket.setSoTimeout(tick <= 0 ? 1 : tick); |
| } |
| } |
| catch(SocketException e) |
| { |
| // ignore - closed socket |
| } |
| } |
| } |
| } |
| catch (SocketTimeoutException e) |
| { |
| currentTime = System.currentTimeMillis(); |
| if(_ticker != null) |
| { |
| final int tick = _ticker.tick(currentTime); |
| if(!socket.isClosed()) |
| { |
| try |
| { |
| socket.setSoTimeout(tick <= 0 ? 1 : tick ); |
| } |
| catch(SocketException ex) |
| { |
| // ignore - closed socket |
| } |
| } |
| } |
| } |
| } |
| } |
| catch (Exception t) |
| { |
| if (shouldReport(t)) |
| { |
| receiver.exception(t); |
| } |
| } |
| finally |
| { |
| receiver.closed(); |
| try |
| { |
| socket.close(); |
| } |
| catch(Exception e) |
| { |
| LOGGER.warn("Error closing socket", e); |
| } |
| } |
| } |
| |
| private boolean shouldReport(Throwable t) |
| { |
| boolean brokenClose = closed.get() && |
| shutdownBroken && |
| t instanceof SocketException && |
| "socket closed".equalsIgnoreCase(t.getMessage()); |
| |
| boolean sslSocketClosed = closed.get() && |
| socket instanceof SSLSocket && |
| t instanceof SocketException && |
| "Socket is closed".equalsIgnoreCase(t.getMessage()); |
| |
| boolean recvFailed = closed.get() && |
| shutdownBroken && |
| t instanceof SocketException && |
| "Socket operation on nonsocket: recv failed".equalsIgnoreCase(t.getMessage()); |
| |
| return !brokenClose && !sslSocketClosed && !recvFailed; |
| } |
| |
| public Ticker getTicker() |
| { |
| return _ticker; |
| } |
| |
| public void setTicker(Ticker ticker) |
| { |
| _ticker = ticker; |
| } |
| |
| |
| } |