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.barchart.http.server.HttpRequestChannelHandler.java

License:BSD License

@Override
public void channelRead0(final ChannelHandlerContext ctx, final FullHttpRequest msg) throws Exception {

    final RequestHandlerMapping mapping = config.getRequestMapping(msg.getUri());

    String relativePath = msg.getUri();

    if (mapping != null) {
        relativePath = relativePath.substring(mapping.path().length());
    }//from w  w w . j a va2  s .com

    // Create request/response
    final PooledServerRequest request = messagePool.getRequest();

    // Handle 503 - sanity check, should be caught in acceptor
    if (request == null) {
        sendServerError(ctx, new ServerTooBusyException("Maximum concurrent connections reached"));
        return;
    }

    request.init(ctx.channel(), msg, relativePath);

    final RequestHandler handler = mapping == null ? null : mapping.handler(request);

    final PooledServerResponse response = messagePool.getResponse();
    response.init(ctx, this, handler, request, config.logger());

    if (mapping == null) {
        // No handler found, 404
        response.setStatus(HttpResponseStatus.NOT_FOUND);
    }

    // Store in ChannelHandlerContext for future reference
    ctx.attr(ATTR_RESPONSE).set(response);

    try {

        // MJS: Dispatch an error if not found or authorized
        if (response.getStatus() == HttpResponseStatus.UNAUTHORIZED
                || response.getStatus() == HttpResponseStatus.NOT_FOUND) {
            config.errorHandler().onError(request, response, null);
        } else {
            handler.onRequest(request, response);
        }

    } catch (final Throwable t) {

        // Catch server errors
        response.setStatus(HttpResponseStatus.INTERNAL_SERVER_ERROR);

        try {
            config.errorHandler().onError(request, response, t);
        } catch (final Throwable t2) {
            response.write(t.getClass() + " was thrown while processing this request.  Additionally, "
                    + t2.getClass() + " was thrown while handling this exception.");
        }

        config.logger().error(request, response, t);

        // Force request to end on exception, async handlers cannot allow
        // unchecked exceptions and still expect to return data
        if (!response.isFinished()) {
            response.finish();
        }

    } finally {

        // If handler did not request async response, finish request
        if (!response.isFinished() && !response.isSuspended()) {
            response.finish();
        }

    }

}

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

License:BSD License

private void sendServerError(final ChannelHandlerContext ctx, final ServerException cause) throws Exception {

    if (ctx.channel().isActive()) {

        final ByteBuf content = Unpooled.buffer();

        content.writeBytes(/*  w  w  w . j  a  v a 2 s.  c  o m*/
                (cause.getStatus().code() + " " + cause.getStatus().reasonPhrase() + " - " + cause.getMessage())
                        .getBytes());

        final FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, cause.getStatus());

        response.headers().set(HttpHeaders.Names.CONTENT_LENGTH, content.readableBytes());

        response.content().writeBytes(content);

        ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);

    }

}

From source file:com.barchart.netty.common.pipeline.PingHandler.java

License:BSD License

private void startPing(final ChannelHandlerContext ctx) {

    synchronized (this) {

        if (pingFuture != null && !pingFuture.isDone()) {
            pingFuture.cancel(false);/*w w w . ja va2s  . c o m*/
        }

        if (interval > 0) {
            pingFuture = ctx.channel().eventLoop().schedule(new Runnable() {
                @Override
                public void run() {
                    sendPing(ctx);
                }
            }, interval, unit);
        }

    }

}

From source file:com.barchart.netty.common.pipeline.PingHandler.java

License:BSD License

public void sendPing(final ChannelHandlerContext ctx) {

    try {/*from  w w w .j  ava  2  s . co m*/

        if (pingFuture != null && !pingFuture.isDone()) {
            pingFuture.cancel(false);
        }

        ctx.write(new Ping() {

            @Override
            public long timestamp() {
                return System.currentTimeMillis();
            }

        });
        ctx.flush();

    } finally {

        if (interval > 0) {
            pingFuture = ctx.channel().eventLoop().schedule(new Runnable() {
                @Override
                public void run() {
                    sendPing(ctx);
                }
            }, interval, unit);
        }

    }

}

From source file:com.basho.riak.client.core.netty.HealthCheckDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext chc, ByteBuf in, List<Object> list) throws Exception {
    // Make sure we have 4 bytes
    if (in.readableBytes() >= 4) {
        in.markReaderIndex();/*from   w  w  w  . j a va2s . c om*/
        int length = in.readInt();

        // See if we have the full frame.
        if (in.readableBytes() < length) {
            in.resetReaderIndex();
        } else {
            byte code = in.readByte();
            byte[] protobuf = new byte[length - 1];
            in.readBytes(protobuf);

            chc.channel().pipeline().remove(this);
            if (code == RiakMessageCodes.MSG_ErrorResp) {
                logger.debug("Received MSG_ErrorResp reply to healthcheck");
                future.setException((riakErrorToException(protobuf)));
            } else {
                logger.debug("Healthcheck op successful; returned code {}", code);
                future.setMessage(new RiakMessage(code, protobuf));
            }
        }
    }
}

From source file:com.basho.riak.client.core.netty.HealthCheckDecoder.java

License:Apache License

private void init(ChannelHandlerContext ctx) throws InterruptedException {
    ChannelFuture writeAndFlush = ctx.channel().writeAndFlush(buildOperation().channelMessage());
}

From source file:com.basho.riak.client.core.netty.HealthCheckDecoder.java

License:Apache License

@Override
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
    logger.debug("HealthCheckDecoder Handler Added");
    if (ctx.channel().isActive()) {
        init(ctx);/*from   ww  w.j  av  a2s.  c  o  m*/
    } else {
        future.setException(new IOException("HealthCheckDecoder added to inactive channel"));
    }
}

From source file:com.basho.riak.client.core.netty.RiakHttpMessageHandler.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    if (cause instanceof ReadTimeoutException) {
        timedOut = true;/* ww w . j av a 2s.co m*/
        listener.onException(ctx.channel(), cause);
    } else {
        if (!timedOut) {
            listener.onException(ctx.channel(), cause);
        }
        ctx.channel().pipeline().remove(this);
    }
}

From source file:com.basho.riak.client.core.netty.RiakPbMessageHandler.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, RiakPbMessage msg) throws Exception {
    if (msg.getCode() == RiakMessageCodes.MSG_ErrorResp) {
        RiakPB.RpbErrorResp error = RiakPB.RpbErrorResp.newBuilder().setErrcode(msg.getCode())
                .setErrmsg(ByteString.copyFrom(msg.getData())).build();
        listener.onException(ctx.channel(),
                new RiakResponseException(RiakMessageCodes.MSG_ErrorResp, error.getErrmsg().toStringUtf8()));
    } else {//from   w w w.  j a  v  a2  s.  c om
        listener.onSuccess(ctx.channel(), msg);
    }
    ctx.channel().pipeline().remove(this);
}

From source file:com.basho.riak.client.core.netty.RiakResponseHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext chc, Object message) throws Exception {
    RiakMessage riakMessage = (RiakMessage) message;
    if (riakMessage.getCode() == RiakMessageCodes.MSG_ErrorResp) {
        RiakPB.RpbErrorResp error = RiakPB.RpbErrorResp.parseFrom(riakMessage.getData());

        listener.onRiakErrorResponse(chc.channel(),
                new RiakResponseException(error.getErrcode(), error.getErrmsg().toStringUtf8()));
    } else {/*from  w  ww  .  j  av a  2s  .com*/
        listener.onSuccess(chc.channel(), riakMessage);
    }
}