Example usage for io.netty.channel ChannelFuture addListener

Introduction

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

Prototype

@Override
    ChannelFuture addListener(GenericFutureListener<? extends Future<? super Void>> listener);

Source Link

Usage

From source file:com.barchart.http.server.PooledServerResponse.java

License:BSD License

@Override
public ChannelFuture finish() throws IOException {

    checkFinished();/*from   w w  w.  ja v  a 2s. co m*/

    ChannelFuture writeFuture = null;

    // Handlers might call finish() on a cancelled/closed
    // channel, don't cause unnecessary pipeline exceptions
    if (context.channel().isOpen()) {

        if (isChunkedEncoding()) {

            if (!started) {
                log.debug("Warning, empty response");
                startResponse();
            }

            writeFuture = context.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT);

            // MJS: TBD close the channel here
            // context.channel().close();

        } else {

            writeFuture = startResponse();

        }

    }

    close();

    if (writeFuture != null && !HttpHeaders.isKeepAlive(request)) {
        writeFuture.addListener(ChannelFutureListener.CLOSE);
    }

    // Record to access log
    logger.access(request, this, System.currentTimeMillis() - requestTime);

    // Keep alive, need to tell channel handler it can return us to the pool
    if (HttpHeaders.isKeepAlive(request)) {
        channelHandler.freeHandlers(context);
    }

    return writeFuture;

}

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From source file:com.barchart.netty.client.base.ConnectableBase.java

License:BSD License

@Override
public Observable<T> connect() {

    if (transport == null) {
        throw new IllegalArgumentException("Transport cannot be null");
    }/* w w  w.j ava 2  s .c  om*/

    if (channelInitializer == null) {
        throw new IllegalArgumentException("Channel initializer cannot be null");
    }

    log.debug("Client connecting to " + transport.address().toString());
    changeState(Connectable.State.CONNECTING);

    final ChannelFuture future = bootstrap() //
            .group(group) //
            .handler(new ClientPipelineInitializer()) //
            .connect();

    channel = future.channel();

    final ReplaySubject<T> connectObs = ReplaySubject.create();

    future.addListener(new ChannelFutureListener() {

        @SuppressWarnings("unchecked")
        @Override
        public void operationComplete(final ChannelFuture future) throws Exception {

            if (!future.isSuccess()) {
                changeState(Connectable.State.CONNECT_FAIL);
                connectObs.onError(future.cause());
            } else {
                connectObs.onNext((T) ConnectableBase.this);
                connectObs.onCompleted();
            }

        }

    });

    return connectObs;

}

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From source file:com.barchart.netty.server.http.pipeline.PooledHttpServerResponse.java

License:BSD License

@Override
public ChannelFuture finish() throws IOException {

    checkFinished();/* w w  w.  j  a va2s. co  m*/

    ChannelFuture writeFuture = null;

    // Handlers might call finish() on a cancelled/closed
    // channel, don't cause unnecessary pipeline exceptions
    if (context.channel().isOpen()) {

        if (chunkSize > 0) {

            if (!started) {
                log.debug("Warning, empty response");
                startResponse();
            }

            out.flush();

            writeFuture = context.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT);

        } else {

            writeFuture = startResponse();

        }

    }

    close();

    if (writeFuture != null && !HttpHeaders.isKeepAlive(request)) {
        writeFuture.addListener(ChannelFutureListener.CLOSE);
    }

    // Keep alive, need to tell channel handler it can return us to the pool
    if (HttpHeaders.isKeepAlive(request)) {
        keepaliveHelper.requestComplete(context);
    }

    return writeFuture;

}

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From source file:com.barchart.netty.server.stream.MulticastTransceiver.java

License:BSD License

/**
 * Join the multicast group address using the network interface associated
 * with the given address./*from  ww w  . j av  a2s.c  om*/
 */
@Override
public ChannelFuture listen(final SocketAddress address) {

    if (pipelineInit == null) {
        throw new IllegalStateException("No pipeline initializer has been provided, server would do nothing");
    }

    // Kinda hacky, need to override bootstrap params based on passed
    // address

    final ChannelFuture future = bootstrap() //
            .option(ChannelOption.IP_MULTICAST_IF, bindInterface((InetSocketAddress) address)) //
            .localAddress(multicast.getPort()) //
            .remoteAddress(multicast) //
            .bind();

    future.addListener(new GenericFutureListener<ChannelFuture>() {

        @Override
        public void operationComplete(final ChannelFuture future) throws Exception {

            if (future.isSuccess()) {

                final NioDatagramChannel channel = (NioDatagramChannel) future.channel();

                channel.joinGroup(multicast, channel.config().getOption(ChannelOption.IP_MULTICAST_IF));

            }

        }

    });

    serverChannels.add(future.channel());

    return future;

}

---

From source file:com.base.research.socket.netty.ServerHandler.java

License:Apache License

@Override
public void channelRead(final ChannelHandlerContext ctx, Object msg) { // (2)
    Date date = (Date) msg;
    System.out.println("handle:" + date);

    ctx.fireChannelRead(date);//from  www. j  a  v a2 s. com

    // ?
    long timeMillis = System.currentTimeMillis();
    final ChannelFuture f = ctx.write(timeMillis);
    ctx.flush();
    System.out.println("flush");
    // final ChannelFuture f = ctx.writeAndFlush(time); // (3)
    f.addListener(new ChannelFutureListener() {
        @Override
        public void operationComplete(ChannelFuture future) {
            assert f == future;
            ctx.close();
            System.out.println("close-----------------");
        }
    });
}

---

From source file:com.basho.riak.client.core.RiakNode.java

License:Apache License

/**
 * Submits the operation to be executed on this node.
 *
 * @param operation The operation to perform
 * @return {@code true} if this operation was accepted, {@code false} if there
 *         were no available connections.
 * @throws IllegalStateException    if this node is not in the {@code RUNNING} or {@code HEALTH_CHECKING} state
 * @throws IllegalArgumentException if the protocol required for the operation is not supported by this node
 *///from   ww w. j  a  v a 2 s  . co  m
public boolean execute(FutureOperation operation) {
    stateCheck(State.RUNNING, State.HEALTH_CHECKING);

    operation.setLastNode(this);
    Channel channel = getConnection();
    if (channel != null) {
        inProgressMap.put(channel, operation);
        ChannelFuture writeFuture = channel.writeAndFlush(operation);
        writeFuture.addListener(writeListener);
        logger.debug("Operation being executed on RiakNode {}:{}", remoteAddress, port);
        return true;
    } else {
        logger.debug("Operation not being executed Riaknode {}:{}; no connections available", remoteAddress,
                port);
        return false;
    }
}

---

From source file:com.bloom.zerofs.rest.HealthCheckHandler.java

License:Open Source License

@Override
public void channelRead(ChannelHandlerContext ctx, Object obj) throws Exception {
    logger.trace("Reading on channel {}", ctx.channel());
    boolean forwardObj = false;
    if (obj instanceof HttpRequest) {
        if (request == null && ((HttpRequest) obj).getUri().equals(healthCheckUri)) {
            nettyMetrics.healthCheckRequestRate.mark();
            startTimeInMs = System.currentTimeMillis();
            logger.trace("Handling health check request while in state " + restServerState.isServiceUp());
            request = (HttpRequest) obj;
            if (restServerState.isServiceUp()) {
                response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK,
                        Unpooled.wrappedBuffer(GOOD));
                HttpHeaders.setKeepAlive(response, HttpHeaders.isKeepAlive(request));
                HttpHeaders.setContentLength(response, GOOD.length);
            } else {
                response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1,
                        HttpResponseStatus.SERVICE_UNAVAILABLE, Unpooled.wrappedBuffer(BAD));
                HttpHeaders.setKeepAlive(response, false);
                HttpHeaders.setContentLength(response, BAD.length);
            }/*w  w  w.j av  a2  s  .c o m*/
            nettyMetrics.healthCheckRequestProcessingTimeInMs
                    .update(System.currentTimeMillis() - startTimeInMs);
        } else {
            // Rest server could be down even if not for health check request. We intentionally don't take any action in this
            // handler for such cases and leave it to the downstream handlers to handle it
            forwardObj = true;
        }
    }
    if (obj instanceof LastHttpContent) {
        if (response != null) {
            // response was created when we received the request with health check uri
            ChannelFuture future = ctx.writeAndFlush(response);
            if (!HttpHeaders.isKeepAlive(response)) {
                future.addListener(ChannelFutureListener.CLOSE);
            }
            request = null;
            response = null;
            nettyMetrics.healthCheckRequestRoundTripTimeInMs.update(System.currentTimeMillis() - startTimeInMs);
        } else {
            // request was not for health check uri
            forwardObj = true;
        }
    } else if (request == null) {
        // http Content which is not LastHttpContent is not intended for this handler
        forwardObj = true;
    }
    if (forwardObj) {
        super.channelRead(ctx, obj);
    } else {
        ReferenceCountUtil.release(obj);
    }
}

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From source file:com.bt.netty.TelnetServerHandler.java

License:Apache License

@Override
public void channelRead0(ChannelHandlerContext ctx, String request) throws Exception {
    // Generate and write a response.
    String response;/*from  w w w .j  av  a2  s . c o m*/
    boolean close = false;
    if (request.isEmpty()) {
        response = "Please type something.\r\n";
    } else if ("bye".equals(request.toLowerCase())) {
        response = "Have a good day!\r\n";
        close = true;
    } else {
        response = "Did you say '" + request + "'?\r\n";
    }

    // We do not need to write a ChannelBuffer here.
    // We know the encoder inserted at TelnetPipelineFactory will do the conversion.
    ChannelFuture future = ctx.write(response);

    // Close the connection after sending 'Have a good day!'
    // if the client has sent 'bye'.
    if (close) {
        future.addListener(ChannelFutureListener.CLOSE);
    }
}

---

From source file:com.bunjlabs.fuga.network.netty.NettyHttpServerHandler.java

License:Apache License

private void writeResponse(ChannelHandlerContext ctx, Request request, Response response) {
    HttpResponse httpresponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1,
            HttpResponseStatus.valueOf(response.status()));

    httpresponse.headers().set(HttpHeaderNames.TRANSFER_ENCODING, HttpHeaderValues.CHUNKED);
    httpresponse.headers().set(HttpHeaderNames.CONTENT_TYPE, response.contentType());

    // Disable cache by default
    httpresponse.headers().set(HttpHeaderNames.CACHE_CONTROL, "no-cache, no-store, must-revalidate, max-age=0");
    httpresponse.headers().set(HttpHeaderNames.PRAGMA, "no-cache");
    httpresponse.headers().set(HttpHeaderNames.EXPIRES, "0");

    response.headers().entrySet().stream().forEach((e) -> httpresponse.headers().set(e.getKey(), e.getValue()));

    httpresponse.headers().set(HttpHeaderNames.SERVER, "Fuga Netty Web Server/" + serverVersion);

    // Set cookies
    httpresponse.headers().set(HttpHeaderNames.SET_COOKIE,
            ServerCookieEncoder.STRICT.encode(NettyCookieConverter.convertListToNetty(response.cookies())));

    if (response.length() >= 0) {
        httpresponse.headers().set(HttpHeaderNames.CONTENT_LENGTH, response.length());
    }/*from   ww  w  . j a v  a 2  s.  c o  m*/

    if (HttpUtil.isKeepAlive(httprequest)) {
        httpresponse.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
    } else {
        httpresponse.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
    }

    ctx.write(httpresponse);

    if (response.stream() != null) {
        ctx.write(new HttpChunkedInput(new ChunkedStream(response.stream())));
    }

    LastHttpContent fs = new DefaultLastHttpContent();
    ChannelFuture sendContentFuture = ctx.writeAndFlush(fs);
    if (!HttpUtil.isKeepAlive(httprequest)) {
        sendContentFuture.addListener(ChannelFutureListener.CLOSE);
    }
}

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From source file:com.caricah.iotracah.server.netty.channelgroup.IotChannelGroupFuture.java

License:Apache License

/**
 * Creates a new instance./*from   w  w  w.  j a v  a  2  s.c  o m*/
 */
IotChannelGroupFuture(ChannelGroup group, Collection<ChannelFuture> futures, EventExecutor executor) {
    super(executor);
    if (group == null) {
        throw new NullPointerException("group");
    }
    if (futures == null) {
        throw new NullPointerException("futures");
    }

    this.group = group;

    Map<Channel, ChannelFuture> futureMap = new LinkedHashMap<Channel, ChannelFuture>();
    for (ChannelFuture f : futures) {
        futureMap.put(f.channel(), f);
    }

    this.futures = Collections.unmodifiableMap(futureMap);

    for (ChannelFuture f : this.futures.values()) {
        f.addListener(childListener);
    }

    // Done on arrival?
    if (this.futures.isEmpty()) {
        setSuccess0();
    }
}

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