Example usage for io.netty.util.internal RecyclableArrayList newInstance

Introduction

In this page you can find the example usage for io.netty.util.internal RecyclableArrayList newInstance.

Prototype

public static RecyclableArrayList newInstance() 

Source Link

Document

Create a new empty RecyclableArrayList instance

Usage

From source file:code.google.nfs.rpc.netty.serialize.NettyProtocolDecoder.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    RecyclableArrayList out = RecyclableArrayList.newInstance();
    try {//www  . j a  va2s. co  m
        if (msg instanceof ByteBuf) {
            ByteBuf data = (ByteBuf) msg;
            if (cumulation == null) {
                cumulation = data;
                try {
                    callDecode(ctx, cumulation, out);
                } finally {
                    if (cumulation != null && !cumulation.isReadable()) {
                        cumulation.release();
                        cumulation = null;
                    }
                }
            } else {
                try {
                    if (cumulation.writerIndex() > cumulation.maxCapacity() - data.readableBytes()) {
                        ByteBuf oldCumulation = cumulation;
                        cumulation = ctx.alloc().buffer(oldCumulation.readableBytes() + data.readableBytes());
                        cumulation.writeBytes(oldCumulation);
                        oldCumulation.release();
                    }
                    cumulation.writeBytes(data);
                    callDecode(ctx, cumulation, out);
                } finally {
                    if (cumulation != null) {
                        if (!cumulation.isReadable()) {
                            cumulation.release();
                            cumulation = null;
                        } else {
                            cumulation.discardSomeReadBytes();
                        }
                    }
                    data.release();
                }
            }
        } else {
            out.add(msg);
        }
    } catch (DecoderException e) {
        throw e;
    } catch (Throwable t) {
        throw new DecoderException(t);
    } finally {
        if (out.isEmpty()) {
            decodeWasNull = true;
        }

        List<Object> results = new ArrayList<Object>();
        for (Object result : out) {
            results.add(result);
        }
        ctx.fireChannelRead(results);

        out.recycle();
    }
}

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From source file:code.google.nfs.rpc.netty.serialize.NettyProtocolDecoder.java

License:Apache License

@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
    RecyclableArrayList out = RecyclableArrayList.newInstance();
    try {//w  w  w  . j ava2  s  . com
        if (cumulation != null) {
            callDecode(ctx, cumulation, out);
            decodeLast(ctx, cumulation, out);
        } else {
            decodeLast(ctx, Unpooled.EMPTY_BUFFER, out);
        }
    } catch (DecoderException e) {
        throw e;
    } catch (Exception e) {
        throw new DecoderException(e);
    } finally {
        if (cumulation != null) {
            cumulation.release();
            cumulation = null;
        }

        for (int i = 0; i < out.size(); i++) {
            ctx.fireChannelRead(out.get(i));
        }
        ctx.fireChannelInactive();
    }
}

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From source file:com.spotify.netty4.handler.codec.zmtp.ZMTPMessage.java

License:Apache License

/**
 * Convenience method for reading a {@link ZMTPMessage} from a {@link ByteBuf}.
 */// w w w  . j  ava2 s.  co m
public static ZMTPMessage read(final ByteBuf in, final ZMTPVersion version) throws ZMTPParsingException {
    final int mark = in.readerIndex();
    final ZMTPWireFormat wireFormat = ZMTPWireFormats.wireFormat(version);
    final ZMTPWireFormat.Header header = wireFormat.header();
    final RecyclableArrayList frames = RecyclableArrayList.newInstance();
    while (true) {
        final boolean read = header.read(in);
        if (!read) {
            frames.recycle();
            in.readerIndex(mark);
            return null;
        }
        if (in.readableBytes() < header.length()) {
            frames.recycle();
            in.readerIndex(mark);
            return null;
        }
        if (header.length() > Integer.MAX_VALUE) {
            throw new ZMTPParsingException("frame is too large: " + header.length());
        }
        final ByteBuf frame = in.readSlice((int) header.length());
        frame.retain();
        frames.add(frame);
        if (!header.more()) {
            @SuppressWarnings("unchecked")
            final ZMTPMessage message = ZMTPMessage.from((List<ByteBuf>) (Object) frames);
            frames.recycle();
            return message;
        }
    }
}

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From source file:divconq.net.ByteToMessageDecoder.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    if (msg instanceof ByteBuf) {
        RecyclableArrayList out = RecyclableArrayList.newInstance();

        try {// w w w .  j  a v a 2 s.co  m
            ByteBuf data = (ByteBuf) msg;
            this.first = this.cumulation == null;

            if (this.first) {
                this.cumulation = data;
            } else {
                if (this.cumulation.writerIndex() > this.cumulation.maxCapacity() - data.readableBytes()
                        || this.cumulation.refCnt() > 1) {
                    // Expand cumulation (by replace it) when either there is not more room in the buffer
                    // or if the refCnt is greater then 1 which may happen when the user use slice().retain() or
                    // duplicate().retain().
                    //
                    // See:
                    // - https://github.com/netty/netty/issues/2327
                    // - https://github.com/netty/netty/issues/1764
                    this.expandCumulation(ctx, data.readableBytes());
                }

                this.cumulation.writeBytes(data);
                data.release();
            }

            this.callDecode(ctx, this.cumulation, out);
        } catch (DecoderException e) {
            throw e;
        } catch (Throwable t) {
            throw new DecoderException(t);
        } finally {
            if (this.cumulation != null && !this.cumulation.isReadable()) {
                this.cumulation.release();
                this.cumulation = null;
            }
            int size = out.size();
            this.decodeWasNull = size == 0;

            for (int i = 0; i < size; i++) {
                ctx.fireChannelRead(out.get(i));
            }
            out.recycle();
        }
    } else {
        ctx.fireChannelRead(msg);
    }
}

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From source file:divconq.net.ByteToMessageDecoder.java

License:Apache License

@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
    RecyclableArrayList out = RecyclableArrayList.newInstance();
    try {//from w ww .  j av  a  2 s  .c  o m
        if (this.cumulation != null) {
            callDecode(ctx, this.cumulation, out);
            decodeLast(ctx, this.cumulation, out);
        } else {
            decodeLast(ctx, Unpooled.EMPTY_BUFFER, out);
        }
    } catch (DecoderException e) {
        throw e;
    } catch (Exception e) {
        throw new DecoderException(e);
    } finally {
        try {
            if (this.cumulation != null) {
                this.cumulation.release();
                this.cumulation = null;
            }
            int size = out.size();
            for (int i = 0; i < size; i++) {
                ctx.fireChannelRead(out.get(i));
            }
            if (size > 0) {
                // Something was read, call fireChannelReadComplete()
                ctx.fireChannelReadComplete();
            }
            ctx.fireChannelInactive();
        } finally {
            // recycle in all cases
            out.recycle();
        }
    }
}

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