Example usage for io.netty.buffer ByteBuf release

List of usage examples for io.netty.buffer ByteBuf release

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Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf release.

Prototype

boolean release();

Source Link

Document

Decreases the reference count by 1 and deallocates this object if the reference count reaches at 0 .

Usage

From source file:com.example.time1.client.FragmentedTimeClientHandler.java

License:Apache License

@Override
public void channelRead(final ChannelHandlerContext ctx, final Object msg) {
    final ByteBuf buf = (ByteBuf) msg;
    byteBuf.writeBytes(buf); // ???? byteBuf ?
    buf.release();
    if (byteBuf.readableBytes() >= 8) { // ??
        final long epochSeconds = byteBuf.readLong();
        final OffsetDateTime serverTime = Instant.ofEpochSecond(epochSeconds).atOffset(ZoneOffset.UTC);
        log.info("server time: {}", serverTime);
        ctx.close();//  w  ww .j a v a 2 s.  co m
    }
}

From source file:com.fanavard.challenge.server.websocket.server.WebSocketServerHandler.java

License:Apache License

private static void sendHttpResponse(ChannelHandlerContext ctx, FullHttpRequest req, FullHttpResponse res) {
    // Generate an error page if response getStatus code is not OK (200).
    if (res.status().code() != 200) {
        ByteBuf buf = Unpooled.copiedBuffer(res.status().toString(), CharsetUtil.UTF_8);
        res.content().writeBytes(buf);/*from w  w w . jav  a  2 s  . c  o m*/
        buf.release();
        HttpHeaderUtil.setContentLength(res, res.content().readableBytes());
    }

    // Send the response and close the connection if necessary.
    ChannelFuture f = ctx.channel().writeAndFlush(res);
    if (!HttpHeaderUtil.isKeepAlive(req) || res.status().code() != 200) {
        f.addListener(ChannelFutureListener.CLOSE);
    }
}

From source file:com.fjn.helper.frameworkex.netty.v4.echotest.EchoClientHandler.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
    System.out.println("Client received : " + ByteBufUtil.hexDump(msg.readBytes(msg.readableBytes())));
    msg.release();
}

From source file:com.fjn.helper.frameworkex.netty.v4.timetest.TimeClientHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
    ByteBuf m = (ByteBuf) msg;
    buf.writeBytes(m); // (2)
    m.release();

    if (buf.readableBytes() >= 4) { // (3)
        long currentTimeMillis = (buf.readUnsignedInt() - 2208988800L) * 1000L;
        System.out.println(new Date(currentTimeMillis));
        ctx.close();/*from  ww  w  . ja  va 2s . c om*/
    }
}

From source file:com.gemstone.gemfire.internal.redis.Coder.java

License:Apache License

public static final ByteBuf getKeyValArrayResponse(ByteBufAllocator alloc,
        Collection<Entry<ByteArrayWrapper, ByteArrayWrapper>> items) {
    Iterator<Map.Entry<ByteArrayWrapper, ByteArrayWrapper>> it = items.iterator();
    ByteBuf response = alloc.buffer();//from   w  w  w  .  j a  v  a 2  s  . com
    response.writeByte(ARRAY_ID);

    int size = 0;
    ByteBuf tmp = alloc.buffer();
    while (it.hasNext()) {
        Map.Entry<ByteArrayWrapper, ByteArrayWrapper> next = it.next();
        byte[] key;
        byte[] nextByteArray;
        try {
            key = next.getKey().toBytes();
            nextByteArray = next.getValue().toBytes();
        } catch (EntryDestroyedException e) {
            continue;
        }
        tmp.writeByte(BULK_STRING_ID); // Add key
        tmp.writeBytes(intToBytes(key.length));
        tmp.writeBytes(CRLFar);
        tmp.writeBytes(key);
        tmp.writeBytes(CRLFar);
        tmp.writeByte(BULK_STRING_ID); // Add value
        tmp.writeBytes(intToBytes(nextByteArray.length));
        tmp.writeBytes(CRLFar);
        tmp.writeBytes(nextByteArray);
        tmp.writeBytes(CRLFar);
        size++;
    }

    response.writeBytes(intToBytes(size * 2));
    response.writeBytes(CRLFar);
    response.writeBytes(tmp);

    tmp.release();

    return response;
}

From source file:com.gemstone.gemfire.internal.redis.Coder.java

License:Apache License

public static ByteBuf getBulkStringArrayResponseOfValues(ByteBufAllocator alloc, Collection<?> items) {
    Iterator<?> it = items.iterator();
    ByteBuf response = alloc.buffer();/*from w  ww .  j ava  2s.c  o  m*/
    response.writeByte(Coder.ARRAY_ID);
    ByteBuf tmp = alloc.buffer();
    int size = 0;
    while (it.hasNext()) {
        Object next = it.next();
        ByteArrayWrapper nextWrapper = null;
        if (next instanceof Entry) {
            try {
                nextWrapper = (ByteArrayWrapper) ((Entry<?, ?>) next).getValue();
            } catch (EntryDestroyedException e) {
                continue;
            }
        } else if (next instanceof Struct) {
            nextWrapper = (ByteArrayWrapper) ((Struct) next).getFieldValues()[1];
        }
        if (nextWrapper != null) {
            tmp.writeByte(Coder.BULK_STRING_ID);
            tmp.writeBytes(intToBytes(nextWrapper.length()));
            tmp.writeBytes(Coder.CRLFar);
            tmp.writeBytes(nextWrapper.toBytes());
            tmp.writeBytes(Coder.CRLFar);
        } else {
            tmp.writeBytes(Coder.bNIL);
        }
        size++;
    }

    response.writeBytes(intToBytes(size));
    response.writeBytes(Coder.CRLFar);
    response.writeBytes(tmp);

    tmp.release();

    return response;
}

From source file:com.gemstone.gemfire.internal.redis.Coder.java

License:Apache License

public static ByteBuf zRangeResponse(ByteBufAllocator alloc, Collection<?> list, boolean withScores) {
    if (list.isEmpty())
        return Coder.getEmptyArrayResponse(alloc);

    ByteBuf buffer = alloc.buffer();/*from   w w w  .  j a  v  a 2s .  c  o m*/
    buffer.writeByte(Coder.ARRAY_ID);
    ByteBuf tmp = alloc.buffer();
    int size = 0;

    for (Object entry : list) {
        ByteArrayWrapper key;
        DoubleWrapper score;
        if (entry instanceof Entry) {
            try {
                key = (ByteArrayWrapper) ((Entry<?, ?>) entry).getKey();
                score = (DoubleWrapper) ((Entry<?, ?>) entry).getValue();
            } catch (EntryDestroyedException e) {
                continue;
            }
        } else {
            Object[] fieldVals = ((Struct) entry).getFieldValues();
            key = (ByteArrayWrapper) fieldVals[0];
            score = (DoubleWrapper) fieldVals[1];
        }
        byte[] byteAr = key.toBytes();
        tmp.writeByte(Coder.BULK_STRING_ID);
        tmp.writeBytes(intToBytes(byteAr.length));
        tmp.writeBytes(Coder.CRLFar);
        tmp.writeBytes(byteAr);
        tmp.writeBytes(Coder.CRLFar);
        size++;
        if (withScores) {
            String scoreString = score.toString();
            byte[] scoreAr = stringToBytes(scoreString);
            tmp.writeByte(Coder.BULK_STRING_ID);
            tmp.writeBytes(intToBytes(scoreString.length()));
            tmp.writeBytes(Coder.CRLFar);
            tmp.writeBytes(scoreAr);
            tmp.writeBytes(Coder.CRLFar);
            size++;
        }
    }

    buffer.writeBytes(intToBytes(size));
    buffer.writeBytes(Coder.CRLFar);
    buffer.writeBytes(tmp);

    tmp.release();

    return buffer;
}

From source file:com.gemstone.gemfire.internal.redis.ExecutionHandlerContext.java

License:Apache License

/**
 * Reset the transaction of client//from w ww .j a  v  a 2s . com
 */
public void clearTransaction() {
    this.transactionID = null;
    if (this.transactionQueue != null) {
        for (Command c : this.transactionQueue) {
            ByteBuf r = c.getResponse();
            if (r != null)
                r.release();
        }
        this.transactionQueue.clear();
    }
}

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

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    final ByteBuf message = (ByteBuf) msg;

    final ProduceResponse produceResponse = parseProduceResponse(message);
    if (produceResponse.topics.get(0).partitions.get(0).errorCode != 0) {
        // TODO: this should be handled better when there is more then one partition involved
        Error error = Error.valueOf(produceResponse.topics.get(0).partitions.get(0).errorCode);
        this.ackHandle.fail(produceResponse.correlationId, error.exception);
        // TODO: should we disconnect channel if there is error ... maybe disconnection may help to recover
    } else {//w  w  w. j  av a 2  s . com
        this.ackHandle.success(produceResponse.correlationId);
    }

    message.release();
}

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();
    super.write(ctx, kafkaMessage, promise);
}