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.flysoloing.learning.network.netty.binary.MemcacheClientHandler.java

License:Apache License

/**
 * Transforms basic string requests to binary memcache requests
 *//*  w  w  w  .  j  a va  2s .co m*/
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
    String command = (String) msg;
    if (command.startsWith("get ")) {
        String keyString = command.substring("get ".length());
        ByteBuf key = Unpooled.wrappedBuffer(keyString.getBytes(CharsetUtil.UTF_8));

        BinaryMemcacheRequest req = new DefaultBinaryMemcacheRequest(key);
        req.setOpcode(BinaryMemcacheOpcodes.GET);

        ctx.write(req, promise);
    } else if (command.startsWith("set ")) {
        String[] parts = command.split(" ", 3);
        if (parts.length < 3) {
            throw new IllegalArgumentException("Malformed Command: " + command);
        }
        String keyString = parts[1];
        String value = parts[2];

        ByteBuf key = Unpooled.wrappedBuffer(keyString.getBytes(CharsetUtil.UTF_8));
        ByteBuf content = Unpooled.wrappedBuffer(value.getBytes(CharsetUtil.UTF_8));
        ByteBuf extras = ctx.alloc().buffer(8);
        extras.writeZero(8);

        BinaryMemcacheRequest req = new DefaultFullBinaryMemcacheRequest(key, extras, content);
        req.setOpcode(BinaryMemcacheOpcodes.SET);

        ctx.write(req, promise);
    } else {
        throw new IllegalStateException("Unknown Message: " + msg);
    }
}

From source file:com.flysoloing.learning.network.netty.http2.helloworld.multiplex.server.HelloWorldHttp2Handler.java

License:Apache License

/**
 * If receive a frame with end-of-stream set, send a pre-canned response.
 *//*from   ww w  .  ja va  2  s . c  om*/
public void onHeadersRead(ChannelHandlerContext ctx, Http2HeadersFrame headers) throws Exception {
    if (headers.isEndStream()) {
        ByteBuf content = ctx.alloc().buffer();
        content.writeBytes(RESPONSE_BYTES.duplicate());
        ByteBufUtil.writeAscii(content, " - via HTTP/2");
        sendResponse(ctx, content);
    }
}

From source file:com.flysoloing.learning.network.netty.http2.helloworld.server.HelloWorldHttp1Handler.java

License:Apache License

@Override
public void channelRead0(ChannelHandlerContext ctx, FullHttpRequest req) throws Exception {
    if (HttpUtil.is100ContinueExpected(req)) {
        ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE));
    }/*from w  ww  . j a va 2  s  .  c  om*/
    boolean keepAlive = HttpUtil.isKeepAlive(req);

    ByteBuf content = ctx.alloc().buffer();
    content.writeBytes(HelloWorldHttp2Handler.RESPONSE_BYTES.duplicate());
    ByteBufUtil.writeAscii(content, " - via " + req.protocolVersion() + " (" + establishApproach + ")");

    FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, content);
    response.headers().set(CONTENT_TYPE, "text/plain; charset=UTF-8");
    response.headers().setInt(CONTENT_LENGTH, response.content().readableBytes());

    if (!keepAlive) {
        ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
    } else {
        response.headers().set(CONNECTION, HttpHeaderValues.KEEP_ALIVE);
        ctx.writeAndFlush(response);
    }
}

From source file:com.flysoloing.learning.network.netty.http2.helloworld.server.HelloWorldHttp2Handler.java

License:Apache License

public void onHeadersRead(ChannelHandlerContext ctx, int streamId, Http2Headers headers, int padding,
        boolean endOfStream) {
    if (endOfStream) {
        ByteBuf content = ctx.alloc().buffer();
        content.writeBytes(RESPONSE_BYTES.duplicate());
        ByteBufUtil.writeAscii(content, " - via HTTP/2");
        sendResponse(ctx, streamId, content);
    }/*from   w ww  .  jav a2 s .c  o m*/
}

From source file:com.flysoloing.learning.network.netty.http2.tiles.FallbackRequestHandler.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, HttpRequest req) throws Exception {
    if (HttpUtil.is100ContinueExpected(req)) {
        ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE));
    }/*from www .j  a  va2s .c  o m*/

    ByteBuf content = ctx.alloc().buffer();
    content.writeBytes(response.duplicate());

    FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, content);
    response.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");
    response.headers().setInt(CONTENT_LENGTH, response.content().readableBytes());

    ctx.write(response).addListener(ChannelFutureListener.CLOSE);
}

From source file:com.flysoloing.learning.network.netty.http2.tiles.Http2RequestHandler.java

License:Apache License

private void handlePage(ChannelHandlerContext ctx, String streamId, int latency, FullHttpRequest request) {
    byte[] body = Html.body(latency);
    ByteBuf content = ctx.alloc().buffer(Html.HEADER.length + body.length + Html.FOOTER.length);
    content.writeBytes(Html.HEADER);/*from w ww .jav  a2  s .  c o  m*/
    content.writeBytes(body);
    content.writeBytes(Html.FOOTER);
    FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, content);
    response.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");
    sendResponse(ctx, streamId, latency, response, request);
}

From source file:com.flysoloing.learning.network.netty.portunification.PortUnificationServerHandler.java

License:Apache License

private void enableSsl(ChannelHandlerContext ctx) {
    ChannelPipeline p = ctx.pipeline();/*  w w  w.  ja v a 2  s .  c  o  m*/
    p.addLast("ssl", sslCtx.newHandler(ctx.alloc()));
    p.addLast("unificationA", new PortUnificationServerHandler(sslCtx, false, detectGzip));
    p.remove(this);
}

From source file:com.flysoloing.learning.network.netty.redis.RedisClientHandler.java

License:Apache License

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
    String[] commands = ((String) msg).split("\\s+");
    List<RedisMessage> children = new ArrayList<RedisMessage>(commands.length);
    for (String cmdString : commands) {
        children.add(new FullBulkStringRedisMessage(ByteBufUtil.writeUtf8(ctx.alloc(), cmdString)));
    }//from   ww  w. jav  a 2 s .com
    RedisMessage request = new ArrayRedisMessage(children);
    ctx.write(request, promise);
}

From source file:com.github.milenkovicm.kafka.handler.CompositeProducerHandler.java

License:Apache License

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
    final ByteBuf message = (ByteBuf) msg;
    final ByteBuf kafkaMessage = creteProduceRequest(ctx.alloc(), message, topicName);
    super.write(ctx, kafkaMessage, promise);
}

From source file:com.github.milenkovicm.kafka.handler.CopyProducerHandler.java

License:Apache License

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
    final ByteBuf message = (ByteBuf) msg;
    final ByteBuf kafkaMessage = creteProduceRequest(ctx.alloc(), message, topicName);
    message.release();/*from ww  w .ja v  a  2 s. co m*/
    super.write(ctx, kafkaMessage, promise);
}