Example usage for io.netty.channel ChannelHandlerContext alloc

Introduction

In this page you can find the example usage for io.netty.channel ChannelHandlerContext alloc.

Prototype

ByteBufAllocator alloc();

Source Link

Document

Return the assigned ByteBufAllocator which will be used to allocate ByteBuf s.

Usage

From source file:com.ebay.jetstream.messaging.transport.netty.compression.MessageDecompressionHandler.java

License:MIT License

@Override
protected Object decode(ChannelHandlerContext ctx, ByteBuf in) throws Exception {

    ByteBuf frame = (ByteBuf) super.decode(ctx, in);

    if (frame == null) {
        return null;
    }/* www. ja v  a  2  s  . c  om*/

    byte[] uncompressedbuf;

    if (m_allocBuf)
        uncompressedbuf = new byte[m_tmpBufSz];
    else
        uncompressedbuf = m_tmpBuf;

    int framelen = frame.readableBytes();

    int len = 0;

    try {

        len = Snappy.rawUncompress(frame.readBytes(framelen).array(), 0, framelen, uncompressedbuf, 0);

    } catch (Throwable t) {

        LOGGER.debug("Failed to uncompress - " + t.getLocalizedMessage());

        frame.release();
        return null;
    }

    frame.release();

    ByteBuf buf = ctx.alloc().directBuffer(len);

    return buf.writeBytes(uncompressedbuf, 0, len);

}

From source file:com.example.time.server.TimeServerHandler.java

License:Apache License

@Override
public void channelActive(final ChannelHandlerContext ctx) {
    final OffsetDateTime now = OffsetDateTime.now(zoneId);
    final long epochSecond = now.toEpochSecond();

    log.info("channel active: {}", now);

    final ByteBuf byteBuf = ctx.alloc().buffer(8);
    byteBuf.writeLong(epochSecond);//from w ww  .j  ava  2s . c o  m
    Futures.toMono(ctx.writeAndFlush(byteBuf)).subscribe(v -> ctx.close());
}

From source file:com.example.time1.client.FragmentedTimeClientHandler.java

License:Apache License

@Override
public void handlerAdded(final ChannelHandlerContext ctx) {
    this.byteBuf = ctx.alloc().buffer(4);
}

From source file:com.facebook.nifty.core.NiftyDispatcher.java

License:Apache License

private ByteBuf addFraming(ChannelHandlerContext ctx, ByteBuf response, ThriftTransportType transportType) {
    if (!response.isReadable()) {
        // Empty response from one-way message, don't frame it
        return response;
    }/*from   www.  j ava2  s  .c om*/

    if (transportType == ThriftTransportType.UNFRAMED) {
        return response;
    } else if (transportType == ThriftTransportType.FRAMED) {
        ByteBuf frameSizeBuffer = ctx.alloc().buffer(4);
        frameSizeBuffer.writeInt(response.readableBytes());
        return Unpooled.wrappedBuffer(frameSizeBuffer, response);
    } else {
        throw new UnsupportedOperationException("Header protocol is not supported");
    }
}

From source file:com.fjn.helper.frameworkex.netty.v4.discardserver.DiscardServerHandler.java

License:Apache License

/**
 * ???/* w  ww.j  a v a2 s .  c  om*/
 * @param ctx
 * @param msg
 * @throws Exception
 */
public void channelRead(final ChannelHandlerContext ctx, Object msg) throws Exception {
    ByteBuf in = (ByteBuf) msg;
    try {
        while (in.isReadable()) {
            char c = (char) in.readByte();
            content += c;
            if (c == '\n' || c == '\r') {
                if (!line.isEmpty()) {
                    System.out.println(line);
                }
                if ("quit".equals(line)) {
                    ByteBuf bf = ctx.alloc().buffer(content.getBytes().length);
                    bf.setBytes(0, content.getBytes());
                    final ChannelFuture f = ctx.writeAndFlush(bf); // (3)
                    f.addListener(new ChannelFutureListener() {
                        @Override
                        public void operationComplete(ChannelFuture future) throws InterruptedException {
                            assert f == future;
                            ctx.close();
                        }
                    }); // (4)
                }
                line = "";
                continue;
            } else {
                line += c;
            }
        }
    } finally {
        ReferenceCountUtil.release(msg);
    }
}

From source file:com.fjn.helper.frameworkex.netty.v4.timetest.TimeClientHandler.java

License:Apache License

@Override
public void handlerAdded(ChannelHandlerContext ctx) {
    buf = ctx.alloc().buffer(4); // (1)
}

From source file:com.fjn.helper.frameworkex.netty.v4.timetest.TimeEncoder.java

License:Apache License

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
    UnixTime m = (UnixTime) msg;//w ww . j  ava  2 s.c om
    ByteBuf encoded = ctx.alloc().buffer(4);
    encoded.writeInt((int) m.value());
    ctx.write(encoded, promise); // (1)
}

From source file:com.flowpowered.network.pipeline.MessageEncoder.java

License:MIT License

@Override
protected void encode(ChannelHandlerContext ctx, Message message, List<Object> out) throws Exception {
    final Protocol protocol = messageHandler.getSession().getProtocol();
    final Class<? extends Message> clazz = message.getClass();
    CodecRegistration reg = protocol.getCodecRegistration(message.getClass());
    if (reg == null) {
        throw new Exception("Unknown message type: " + clazz + ".");
    }/*www .j a  va  2 s .co m*/
    ByteBuf messageBuf = ctx.alloc().buffer();
    messageBuf = reg.getCodec().encode(messageBuf, message);

    ByteBuf headerBuf = ctx.alloc().buffer();
    headerBuf = protocol.writeHeader(headerBuf, reg, messageBuf);
    out.add(Unpooled.wrappedBuffer(headerBuf, messageBuf));
}

From source file:com.flowpowered.network.pipeline.MessageProcessorDecoder.java

License:MIT License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buf, List<Object> frames) throws Exception {
    MessageProcessor processor = getProcessor();
    if (processor == null) {
        frames.add(buf.readBytes(buf.readableBytes()));
        return;/* w  w w .j ava 2s  .co m*/
    }
    // Eventually, we will run out of bytes and a ReplayableError will be called
    ByteBuf liveBuffer = ctx.alloc().buffer();
    liveBuffer = processor.processInbound(ctx, buf, liveBuffer);
    frames.add(liveBuffer);
}

From source file:com.flowpowered.network.pipeline.MessageProcessorEncoder.java

License:MIT License

@Override
protected void encode(ChannelHandlerContext ctx, final ByteBuf buf, List<Object> out) throws Exception {
    final MessageProcessor processor = getProcessor();
    if (processor == null) {
        out.add(buf.readBytes(buf.readableBytes()));
        return;// www.j a v a 2 s . c o m
    }
    ByteBuf toAdd = ctx.alloc().buffer();
    toAdd = processor.processOutbound(ctx, buf, toAdd);
    out.add(toAdd);
}