Example usage for io.netty.channel ChannelHandlerContext channel

List of usage examples for io.netty.channel ChannelHandlerContext channel

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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:com.alibaba.rocketmq.remoting.netty.NettyRemotingAbstract.java

License:Apache License

public void processRequestCommand(final ChannelHandlerContext ctx, final RemotingCommand cmd) {
    final Pair<NettyRequestProcessor, ExecutorService> matched = this.processorTable.get(cmd.getCode());
    final Pair<NettyRequestProcessor, ExecutorService> pair = null == matched ? this.defaultRequestProcessor
            : matched;/*  ww  w. j  a v  a2s . com*/

    if (pair != null) {
        Runnable run = new Runnable() {
            @Override
            public void run() {
                try {
                    RPCHook rpcHook = NettyRemotingAbstract.this.getRPCHook();
                    if (rpcHook != null) {
                        rpcHook.doBeforeRequest(RemotingHelper.parseChannelRemoteAddr(ctx.channel()), cmd);
                    }

                    final RemotingCommand response = pair.getObject1().processRequest(ctx, cmd);
                    if (rpcHook != null) {
                        rpcHook.doAfterResponse(RemotingHelper.parseChannelRemoteAddr(ctx.channel()), cmd,
                                response);
                    }

                    if (!cmd.isOnewayRPC()) {
                        if (response != null) {
                            response.setOpaque(cmd.getOpaque());
                            response.markResponseType();
                            try {
                                ctx.writeAndFlush(response);
                            } catch (Throwable e) {
                                plog.error("process request over, but response failed", e);
                                plog.error(cmd.toString());
                                plog.error(response.toString());
                            }
                        } else {
                            // ?processRequest?
                        }
                    }
                } catch (Throwable e) {
                    plog.error("process request exception", e);
                    plog.error(cmd.toString());

                    if (!cmd.isOnewayRPC()) {
                        final RemotingCommand response = RemotingCommand.createResponseCommand(
                                RemotingSysResponseCode.SYSTEM_ERROR, //
                                RemotingHelper.exceptionSimpleDesc(e));
                        response.setOpaque(cmd.getOpaque());
                        ctx.writeAndFlush(response);
                    }
                }
            }
        };

        try {
            // ??????
            pair.getObject2().submit(run);
        } catch (RejectedExecutionException e) {
            // ?10s?
            if ((System.currentTimeMillis() % 10000) == 0) {
                plog.warn(RemotingHelper.parseChannelRemoteAddr(ctx.channel()) //
                        + ", too many requests and system thread pool busy, RejectedExecutionException " //
                        + pair.getObject2().toString() //
                        + " request code: " + cmd.getCode());
            }

            if (!cmd.isOnewayRPC()) {
                final RemotingCommand response = RemotingCommand.createResponseCommand(
                        RemotingSysResponseCode.SYSTEM_BUSY,
                        "too many requests and system thread pool busy, please try another server");
                response.setOpaque(cmd.getOpaque());
                ctx.writeAndFlush(response);
            }
        }
    } else {
        String error = " request type " + cmd.getCode() + " not supported";
        final RemotingCommand response = RemotingCommand
                .createResponseCommand(RemotingSysResponseCode.REQUEST_CODE_NOT_SUPPORTED, error);
        response.setOpaque(cmd.getOpaque());
        ctx.writeAndFlush(response);
        plog.error(RemotingHelper.parseChannelRemoteAddr(ctx.channel()) + error);
    }
}

From source file:com.alibaba.rocketmq.remoting.netty.NettyRemotingAbstract.java

License:Apache License

public void processResponseCommand(ChannelHandlerContext ctx, RemotingCommand cmd) {
    final ResponseFuture responseFuture = responseTable.get(cmd.getOpaque());
    if (responseFuture != null) {
        responseFuture.setResponseCommand(cmd);
        responseFuture.release();//from   ww  w  . j  av  a2s.c o m
        responseTable.remove(cmd.getOpaque());

        if (responseFuture.getInvokeCallback() != null) {
            boolean runInThisThread = false;
            ExecutorService executor = this.getCallbackExecutor();
            if (executor != null) {
                try {
                    executor.submit(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                responseFuture.executeInvokeCallback();
                            } catch (Throwable e) {
                                plog.warn("excute callback in executor exception, and callback throw", e);
                            }
                        }
                    });
                } catch (Exception e) {
                    runInThisThread = true;
                    plog.warn("excute callback in executor exception, maybe executor busy", e);
                }
            } else {
                runInThisThread = true;
            }

            if (runInThisThread) {
                try {
                    responseFuture.executeInvokeCallback();
                } catch (Throwable e) {
                    plog.warn("executeInvokeCallback Exception", e);
                }
            }
        } else {
            responseFuture.putResponse(cmd);
        }
    } else {
        plog.warn("receive response, but not matched any request, "
                + RemotingHelper.parseChannelRemoteAddr(ctx.channel()));
        plog.warn(cmd.toString());
    }

}

From source file:com.alibaba.rocketmq.remoting.NettyConnectionTest.java

License:Apache License

public static RemotingServer createRemotingServer() throws InterruptedException {
    NettyServerConfig config = new NettyServerConfig();
    RemotingServer server = new NettyRemotingServer(config);
    server.registerProcessor(0, new NettyRequestProcessor() {
        private AtomicInteger i = new AtomicInteger();

        @Override//from   w  w  w. java  2s.  c  om
        public RemotingCommand processRequest(ChannelHandlerContext ctx, RemotingCommand request) {
            System.out.println("processRequest=" + request + " " + (i.incrementAndGet()));
            request.setRemark("hello, I am response " + ctx.channel().remoteAddress());
            return request;
        }

        @Override
        public boolean rejectRequest() {
            return false;
        }
    }, Executors.newCachedThreadPool());
    server.start();
    return server;
}

From source file:com.alltobid.quotabid.BidServerHandler.java

License:Apache License

@Override
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
    channels.add(ctx.channel());
}

From source file:com.alltobid.quotabid.BidServerHandler.java

License:Apache License

@Override
public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
    channels.remove(ctx.channel());
}

From source file:com.andrewkroh.cisco.xmlservices.XmlResponseChannelHandler.java

License:Apache License

@Override
public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
    IpPhone phone = ctx.channel().attr(phoneAttributeKey).get();

    if (msg instanceof HttpResponse && LOGGER.isDebugEnabled()) {
        HttpResponse response = (HttpResponse) msg;

        StringBuilder responseInfo = new StringBuilder();
        responseInfo.append("Source=");
        responseInfo.append(phone.getHostname());
        responseInfo.append(", ");
        responseInfo.append("Status=");
        responseInfo.append(response.getStatus());
        responseInfo.append(", ");
        responseInfo.append("Version=");
        responseInfo.append(response.getProtocolVersion());

        for (String name : response.headers().names()) {
            for (String value : response.headers().getAll(name)) {
                responseInfo.append(", ");
                responseInfo.append(name);
                responseInfo.append('=');
                responseInfo.append(value);
            }/*from ww  w  .j a v  a 2s  . co m*/
        }

        LOGGER.debug(responseInfo.toString());
    }

    if (msg instanceof HttpContent) {
        HttpContent content = (HttpContent) msg;

        SettableFuture<XmlPushResponse> responseFuture = ctx.channel().attr(responseAttributeKey).get();

        // The default charset for HTTP is ISO-8859-1. None
        // of the Cisco phones I've seen to date were actually
        // setting the charset so use the default. We could
        // improve here by checking the header for the value.
        String xmlContent = content.content().toString(CharsetUtil.ISO_8859_1);

        CiscoIPPhoneResponse xmlResponse = XmlMarshaller.unmarshal(xmlContent, CiscoIPPhoneResponse.class);
        responseFuture.set(new DefaultXmlPushResponse(phone, xmlResponse));

        // Cleanup:
        ctx.close();
        ctx.channel().close();
    }
}

From source file:com.andrewkroh.cisco.xmlservices.XmlResponseChannelHandler.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    if (LOGGER.isWarnEnabled()) {
        IpPhone phone = ctx.channel().attr(phoneAttributeKey).get();
        LOGGER.warn("Exception in handler for {}.", phone.getHostname());
    }//from w ww .j  a  v  a  2 s.c  o  m

    SettableFuture<XmlPushResponse> responseFuture = ctx.channel().attr(responseAttributeKey).get();
    responseFuture.setException(cause);

    // Cleanup:
    ctx.close();
    ctx.channel().close();
}

From source file:com.andy.grpc.proxy.HexDumpProxyBackendHandler.java

License:Apache License

@Override
public void channelRead(final ChannelHandlerContext ctx, Object msg) {
    inboundChannel.writeAndFlush(msg).addListener(new ChannelFutureListener() {
        @Override/*ww  w .j a v a2  s. co  m*/
        public void operationComplete(ChannelFuture future) {
            if (future.isSuccess()) {
                ctx.channel().read();
            } else {
                future.channel().close();
            }
        }
    });
}

From source file:com.andy.grpc.proxy.HexDumpProxyBackendHandler.java

License:Apache License

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

From source file:com.antsdb.saltedfish.server.mysql.MysqlClientHandler.java

License:Open Source License

public void close(ChannelHandlerContext ctx) {
    ctx.channel().close();
}