Example usage for io.netty.channel ChannelHandlerContext channel

Introduction

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

Prototype

Channel channel();

Source Link

Document

Return the Channel which is bound to the ChannelHandlerContext .

Usage

From source file:NettyInboundHttpTargetHandler.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    cause.printStackTrace();//  w w w . ja va 2 s  .  c  o m
    NettyHttpTransportSourceHandler.closeOnFlush(ctx.channel());
}

From source file:NettyHttpTransportSourceHandler.java

License:Apache License

/**
 * activating registered handler to accept events.
 *
 * @param ctx/*from  w ww . j  a v a  2s.  c o m*/
 * @throws Exception
 */
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {

    final Channel inboundChannel = ctx.channel();

    Bootstrap b = new Bootstrap();
    b.group(inboundChannel.eventLoop()).channel(ctx.channel().getClass());
    b.handler(new NettyTargetHandlerInitilizer(inboundChannel)).option(ChannelOption.AUTO_READ, false);

    b.option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
    b.option(ChannelOption.TCP_NODELAY, true);
    b.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 15000);

    b.option(ChannelOption.SO_SNDBUF, 1048576);
    b.option(ChannelOption.SO_RCVBUF, 1048576);

    ChannelFuture f = b.connect(NettyHttpListner.HOST, NettyHttpListner.HOST_PORT);

    outboundChannel = f.channel();
    f.addListener(new ChannelFutureListener() {
        @Override
        public void operationComplete(ChannelFuture future) throws Exception {
            if (future.isSuccess()) {
                // connection complete start to read first data
                inboundChannel.read();
            } else {
                // Close the connection if the connection attempt has failed.
                inboundChannel.close();
            }
        }
    });

}

From source file:NettyHttpTransportSourceHandler.java

License:Apache License

/**
 * receiving events through netty.//from w ww .ja  v  a  2 s  .c  o  m
 *
 * @param ctx
 * @param msg
 * @throws Exception
 */
@Override
public void channelRead(final ChannelHandlerContext ctx, Object msg) throws Exception {

    if (outboundChannel.isActive()) {
        outboundChannel.writeAndFlush(msg).addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture future) throws Exception {
                if (future.isSuccess()) {
                    // was able to flush out data, start to read the next chunk
                    ctx.channel().read();
                } else {
                    future.channel().close();
                }
            }
        });
    } else {
        // System.out.println("Outbound Channel Not Active");
    }
}

From source file:NettyHttpTransportSourceHandler.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    //  System.out.println("Exception caught");
    cause.printStackTrace();//w  w  w. j a  v  a 2 s  . co  m
    closeOnFlush(ctx.channel());
}

From source file:adalightserver.http.HttpServer.java

License:Apache License

private static void sendHttpResponse(ChannelHandlerContext ctx, FullHttpRequest req, FullHttpResponse res) {
    // res.headers().set("Access-Control-Allow-Methods", "POST, OPTIONS, GET");
    // res.headers().set("Access-Control-Allow-Origin", "*");
    // res.headers().set("Access-Control-Allow-Headers", "*");

    // Generate an error page if response getStatus code is not OK (200).
    if (res.getStatus().code() != 200) {
        ByteBuf buf = Unpooled.copiedBuffer(res.getStatus().toString(), CharsetUtil.UTF_8);
        res.content().writeBytes(buf);//from   w  w  w .ja  v a 2  s .co  m
        buf.release();
        HttpHeaders.setContentLength(res, res.content().readableBytes());
    }
    // Send the response and close the connection if necessary.
    ChannelFuture f = ctx.channel().writeAndFlush(res);
    if (!HttpHeaders.isKeepAlive(req) || res.getStatus().code() != 200) {
        f.addListener(ChannelFutureListener.CLOSE);
    }
}

From source file:adapter.server.AdapterHandler.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, Global.GlobalCommandMessage globalCommandMessage)
        throws Exception {
    // TODO Auto-generated method stub

    if (globalCommandMessage.hasHeader()) {
        Logger.DEBUG("Inter-Cluster message recieved from " + globalCommandMessage.getHeader().getNodeId());
    }/*from   w  w  w  .j  a  v a 2  s .c om*/

    if (globalCommandMessage.hasQuery()) {

        if (globalCommandMessage.getQuery().getAction() == Storage.Action.GET) {
            GlobalCommandMessage response = QueryMessageHandler.getHandler(globalCommandMessage);

            ctx.channel().writeAndFlush(response);

        } else if (globalCommandMessage.getQuery().getAction() == Storage.Action.STORE) {
            GlobalCommandMessage response = QueryMessageHandler.postHandler(globalCommandMessage);

            ctx.channel().writeAndFlush(response);
        }

    }

    if (globalCommandMessage.hasResponse()) {
        Logger.DEBUG("Inter-Cluster message response from " + globalCommandMessage.getHeader().getNodeId());
        if (globalCommandMessage.getResponse().getAction() == Storage.Action.GET) {

            ByteString imageByteString = globalCommandMessage.getResponse().getData();
            byte[] imageArray = imageByteString.toByteArray();
            System.out.write(imageArray);
            //   BufferedImage imag = ImageIO.read(new ByteArrayInputStream(imageArray));
            //      ImageIO.write(imag, "jpg",new File(outputPath, "received.jpg"));
        } else if (globalCommandMessage.getResponse().getAction() == Storage.Action.STORE) {
            String key = globalCommandMessage.getResponse().getKey();
            System.out.println("The Key recieved from adapter layer is" + key);
        }

    }

}

From source file:alluxio.network.protocol.RPCMessageDecoder.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    LOG.error("Error in decoding message. Possible Client/DataServer version incompatibility: "
            + cause.getMessage());//w  w w.j  a v  a 2  s  .co m
    // Return an error message to the client.
    ctx.channel().writeAndFlush(new RPCErrorResponse(RPCResponse.Status.DECODE_ERROR))
            .addListener(ChannelFutureListener.CLOSE);
}

From source file:alluxio.worker.netty.AbstractReadHandler.java

License:Apache License

@Override
public void channelUnregistered(ChannelHandlerContext ctx) {
    // The channel is closed so the client cannot receive this message.
    setError(ctx.channel(), new Error(new InternalException("Channel has been unregistered"), false));
    ctx.fireChannelUnregistered();/*  w  w w.  jav  a 2  s.c o  m*/
}

From source file:alluxio.worker.netty.AbstractReadHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object object) throws Exception {
    if (!acceptMessage(object)) {
        ctx.fireChannelRead(object);//from ww w  . j a v  a  2 s  .co  m
        return;
    }
    Protocol.ReadRequest msg = ((RPCProtoMessage) object).getMessage().asReadRequest();
    if (msg.getCancel()) {
        setCancel(ctx.channel());
        return;
    }

    // Expected state: context equals null as this handler is new for request, or the previous
    // context is not active (done / cancel / abort). Otherwise, notify the client an illegal state.
    // Note that, we reset the context before validation msg as validation may require to update
    // error in context.
    try (LockResource lr = new LockResource(mLock)) {
        Preconditions.checkState(mContext == null || !mContext.isPacketReaderActive());
        mContext = createRequestContext(msg);
    }

    validateReadRequest(msg);

    try (LockResource lr = new LockResource(mLock)) {
        mContext.setPosToQueue(mContext.getRequest().getStart());
        mContext.setPosToWrite(mContext.getRequest().getStart());
        mPacketReaderExecutor.submit(createPacketReader(mContext, ctx.channel()));
        mContext.setPacketReaderActive(true);
    }
}

From source file:alluxio.worker.netty.AbstractReadHandler.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
    LOG.error("Exception caught in AbstractReadHandler for channel {}:", ctx.channel(), cause);
    setError(ctx.channel(), new Error(AlluxioStatusException.fromThrowable(cause), true));
}