Package com.firefly.net

Examples of com.firefly.net.ReceiveBufferSizePredictor

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  private static Log log = LogFactory.getInstance().getLog("firefly-system");

  @Test
  public void testAdaptive() {
    ReceiveBufferSizePredictor receiveBufferSizePredictor = new AdaptiveReceiveBufferSizePredictor();
    receiveBufferSizePredictor.previousReceiveBufferSize(960);
    receiveBufferSizePredictor.previousReceiveBufferSize(960);
    receiveBufferSizePredictor.previousReceiveBufferSize(960);
    log.debug("current buf size: " + receiveBufferSizePredictor.nextReceiveBufferSize());
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), is(1024));

    receiveBufferSizePredictor.previousReceiveBufferSize(1025);
    receiveBufferSizePredictor.previousReceiveBufferSize(1300);
    log.debug("current buf size: " + receiveBufferSizePredictor.nextReceiveBufferSize());
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), greaterThan(1024));

    receiveBufferSizePredictor.previousReceiveBufferSize(4000);
    log.debug("current buf size: " + receiveBufferSizePredictor.nextReceiveBufferSize());
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), greaterThan(2000));
  }
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    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), greaterThan(2000));
  }

  @Test
  public void testFix() {
    ReceiveBufferSizePredictor receiveBufferSizePredictor = new FixedReceiveBufferSizePredictor(1024 * 8);
    receiveBufferSizePredictor.previousReceiveBufferSize(960);
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), is(1024 * 8));
    receiveBufferSizePredictor.previousReceiveBufferSize(40000);
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), is(1024 * 8));
  }
 
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  }

  private boolean read(SelectionKey k) {
    final SocketChannel ch = (SocketChannel) k.channel();
    final TcpSession session = (TcpSession) k.attachment();
    final ReceiveBufferSizePredictor predictor = session
        .getReceiveBufferSizePredictor();
    final int predictedRecvBufSize = predictor.nextReceiveBufferSize();

    int ret = 0;
    int readBytes = 0;
    boolean failure = true;

    ByteBuffer bb = receiveBufferPool.acquire(predictedRecvBufSize);
    try {
      while ((ret = ch.read(bb)) > 0) {
        readBytes += ret;
        if (!bb.hasRemaining())
          break;
      }
      failure = false;
    } catch (ClosedChannelException e) {
      // Can happen, and does not need a user attention.
    } catch (Throwable t) {
      eventManager.executeExceptionTask(session, t);
    }

    if (readBytes > 0) {
      bb.flip();
      receiveBufferPool.release(bb);

      // Update the predictor.
      predictor.previousReceiveBufferSize(readBytes);
      session.setReadBytes(readBytes);
      session.setLastReadTime(TIME_PROVIDER.currentTimeMillis());
      // Decode
     
      try {
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  private static Log log = LogFactory.getInstance().getLog("firefly-system");

  @Test
  public void testAdaptive() {
    ReceiveBufferSizePredictor receiveBufferSizePredictor = new AdaptiveReceiveBufferSizePredictor();
    receiveBufferSizePredictor.previousReceiveBufferSize(960);
    receiveBufferSizePredictor.previousReceiveBufferSize(960);
    receiveBufferSizePredictor.previousReceiveBufferSize(960);
    log.debug("current buf size: " + receiveBufferSizePredictor.nextReceiveBufferSize());
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), is(1024));

    receiveBufferSizePredictor.previousReceiveBufferSize(1025);
    receiveBufferSizePredictor.previousReceiveBufferSize(1300);
    log.debug("current buf size: " + receiveBufferSizePredictor.nextReceiveBufferSize());
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), greaterThan(1024));

    receiveBufferSizePredictor.previousReceiveBufferSize(4000);
    log.debug("current buf size: " + receiveBufferSizePredictor.nextReceiveBufferSize());
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), greaterThan(2000));
   
    receiveBufferSizePredictor.previousReceiveBufferSize(500);
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), greaterThan(2000));
    receiveBufferSizePredictor.previousReceiveBufferSize(1000);
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), lessThan(2000));
  }
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    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), lessThan(2000));
  }

  @Test
  public void testFix() {
    ReceiveBufferSizePredictor receiveBufferSizePredictor = new FixedReceiveBufferSizePredictor(1024 * 8);
    receiveBufferSizePredictor.previousReceiveBufferSize(960);
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), is(1024 * 8));
    receiveBufferSizePredictor.previousReceiveBufferSize(40000);
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), is(1024 * 8));
  }
 
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    receiveBufferSizePredictor.previousReceiveBufferSize(40000);
    Assert.assertThat(receiveBufferSizePredictor.nextReceiveBufferSize(), is(1024 * 8));
  }
 
  public static void main(String[] args) {
    ReceiveBufferSizePredictor receiveBufferSizePredictor = new AdaptiveReceiveBufferSizePredictor();
    receiveBufferSizePredictor.previousReceiveBufferSize(960);
    System.out.println(receiveBufferSizePredictor.nextReceiveBufferSize());
    receiveBufferSizePredictor.previousReceiveBufferSize(1300);
    System.out.println(receiveBufferSizePredictor.nextReceiveBufferSize());
    receiveBufferSizePredictor.previousReceiveBufferSize(4000);
    System.out.println(receiveBufferSizePredictor.nextReceiveBufferSize());
    receiveBufferSizePredictor.previousReceiveBufferSize(960);
    System.out.println(receiveBufferSizePredictor.nextReceiveBufferSize());
    receiveBufferSizePredictor.previousReceiveBufferSize(50);
    receiveBufferSizePredictor.previousReceiveBufferSize(50);
    receiveBufferSizePredictor.previousReceiveBufferSize(50);
    System.out.println(receiveBufferSizePredictor.nextReceiveBufferSize());
  }
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  }

  private boolean read(SelectionKey k) {
    final SocketChannel ch = (SocketChannel) k.channel();
    final TcpSession session = (TcpSession) k.attachment();
    final ReceiveBufferSizePredictor predictor = session.receiveBufferSizePredictor;
    final int predictedRecvBufSize = predictor.nextReceiveBufferSize();

    int ret = 0;
    int readBytes = 0;
    boolean failure = true;

    ByteBuffer bb = receiveBufferPool.acquire(predictedRecvBufSize);
    try {
      while ((ret = ch.read(bb)) > 0) {
        readBytes += ret;
        if (!bb.hasRemaining())
          break;
      }
      failure = false;
    } catch (ClosedChannelException e) {
      // Can happen, and does not need a user attention.
    } catch (Throwable t) {
      eventManager.executeExceptionTask(session, t);
    }

    if (readBytes > 0) {
      bb.flip();
      receiveBufferPool.release(bb);

      // Update the predictor.
      predictor.previousReceiveBufferSize(readBytes);
      session.readBytes += readBytes;
      session.lastReadTime = Millisecond100Clock.currentTimeMillis();
      // Decode
     
      try {
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Related Classes of com.firefly.net.ReceiveBufferSizePredictor

  • com.firefly.net.tcp.TcpWorker
  • test.net.buffer.TestReceiveBufferSizePredictor
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