Examples of io.netty.buffer.CompositeByteBuf$Component

io.netty.buffer.CompositeByteBuf
A virtual buffer which shows multiple buffers as a single merged buffer. It is recommended to use {@link ByteBufAllocator#compositeBuffer()} or {@link Unpooled#wrappedBuffer(ByteBuf)} instead of calling theconstructor explicitly.


        cos.writeRawVarint32(RAW_BODY_TAG);
        cos.writeRawVarint32(rawBodyLength);
        cos.flush(); // need to flush so that dbody goes after if cos is caching.


        CompositeByteBuf cbb = new CompositeByteBuf(buf.alloc(), true, msg.dBodies.length + 1);
        cbb.addComponent(buf);
        int bufLength = buf.readableBytes();
        for (ByteBuf b : msg.dBodies) {
          cbb.addComponent(b);
          bufLength += b.readableBytes();
        }
        cbb.writerIndex(bufLength);
        out.add(cbb);
      } else {
        cos.flush();
        out.add(buf);
      }

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     * number of CONTINUATION frames.
     */
    private ChannelFuture continueHeaders(ChannelHandlerContext ctx, ChannelPromise promise,
            int streamId, int padding, ByteBuf headerBlock, ByteBuf firstFrame) {
        // Create a composite buffer wrapping the first frame and any continuation frames.
        CompositeByteBuf out = ctx.alloc().compositeBuffer();
        out.addComponent(firstFrame);
        int numBytes = firstFrame.readableBytes();


        // Process any continuation frames there might be.
        while (headerBlock.isReadable()) {
            ByteBuf frame = createContinuationFrame(ctx, streamId, headerBlock, padding);
            out.addComponent(frame);
            numBytes += frame.readableBytes();
        }


        out.writerIndex(numBytes);
        return ctx.write(out, promise);
    }

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        decoder.writeInbound(msg.content().retain());
        if (appendFrameTail(msg)) {
            decoder.writeInbound(Unpooled.wrappedBuffer(FRAME_TAIL));
        }


        CompositeByteBuf compositeUncompressedContent = ctx.alloc().compositeBuffer();
        for (;;) {
            ByteBuf partUncompressedContent = decoder.readInbound();
            if (partUncompressedContent == null) {
                break;
            }
            if (!partUncompressedContent.isReadable()) {
                partUncompressedContent.release();
                continue;
            }
            compositeUncompressedContent.addComponent(partUncompressedContent);
            compositeUncompressedContent.writerIndex(compositeUncompressedContent.writerIndex() +
                    partUncompressedContent.readableBytes());
        }
        if (compositeUncompressedContent.numComponents() <= 0) {
            compositeUncompressedContent.release();
            throw new CodecException("cannot read uncompressed buffer");
        }


        if (msg.isFinalFragment() && noContext) {
            cleanup();

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                    ZlibWrapper.NONE, compressionLevel, windowSize, 8));
        }


        encoder.writeOutbound(msg.content().retain());


        CompositeByteBuf fullCompressedContent = ctx.alloc().compositeBuffer();
        for (;;) {
            ByteBuf partCompressedContent = encoder.readOutbound();
            if (partCompressedContent == null) {
                break;
            }
            if (!partCompressedContent.isReadable()) {
                partCompressedContent.release();
                continue;
            }
            fullCompressedContent.addComponent(partCompressedContent);
            fullCompressedContent.writerIndex(fullCompressedContent.writerIndex() +
                    partCompressedContent.readableBytes());
        }
        if (fullCompressedContent.numComponents() <= 0) {
            fullCompressedContent.release();
            throw new CodecException("cannot read compressed buffer");
        }


        if (msg.isFinalFragment() && noContext) {
            cleanup();
        }


        ByteBuf compressedContent;
        if (removeFrameTail(msg)) {
            int realLength = fullCompressedContent.readableBytes() - FRAME_TAIL.length;
            compressedContent = fullCompressedContent.slice(0, realLength);
        } else {
            compressedContent = fullCompressedContent;
        }


        WebSocketFrame outMsg;

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            ByteBuf buf = (ByteBuf) msg;
            if (!buf.hasMemoryAddress() && (PlatformDependent.hasUnsafe() || !buf.isDirect())) {
                if (buf instanceof CompositeByteBuf) {
                    // Special handling of CompositeByteBuf to reduce memory copies if some of the Components
                    // in the CompositeByteBuf are backed by a memoryAddress.
                    CompositeByteBuf comp = (CompositeByteBuf) buf;
                    if (!comp.isDirect() || comp.nioBufferCount() > Native.IOV_MAX) {
                        // more then 1024 buffers for gathering writes so just do a memory copy.
                        buf = newDirectBuffer(buf);
                        assert buf.hasMemoryAddress();
                    }
                } else {

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    written += buff.readableBytes();
    if (conn == null) {
      if (pendingChunks == null) {
        pendingChunks = buff;
      } else {
        CompositeByteBuf pending;
        if (pendingChunks instanceof CompositeByteBuf) {
          pending = (CompositeByteBuf) pendingChunks;
        } else {
          pending = Unpooled.compositeBuffer();
          pending.addComponent(pendingChunks).writerIndex(pendingChunks.writerIndex());
          pendingChunks = pending;
        }
        pending.addComponent(buff).writerIndex(pending.writerIndex() + buff.writerIndex());
      }
      connect();
    } else {
      if (!headWritten) {
        writeHeadWithContent(buff, end);

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      if (env.getBuffer() != null) {
        verify(env.getBuffer(), times(1)).recycleBuffer();
      }
    }


    CompositeByteBuf encodedEnvelopes = new CompositeByteBuf(ByteBufAllocator.DEFAULT, false, envelopes.length);


    ByteBuf buf;
    while ((buf = (ByteBuf) ch.readOutbound()) != null) {
      encodedEnvelopes.addComponent(buf);
    }


    return encodedEnvelopes.writerIndex(encodedEnvelopes.capacity());
  }

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      if (env.getBuffer() != null) {
        verify(env.getBuffer(), times(1)).recycleBuffer();
      }
    }


    CompositeByteBuf encodedEnvelopes = new CompositeByteBuf(ByteBufAllocator.DEFAULT, false, envelopes.length);


    ByteBuf buf;
    while ((buf = (ByteBuf) ch.readOutbound()) != null) {
      encodedEnvelopes.addComponent(buf);
    }


    return encodedEnvelopes.writerIndex(encodedEnvelopes.capacity());
  }

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        return read;
    }


    public Buffer addComponent(final ByteBuf slice) {
        if (buffer instanceof CompositeByteBuf) {
            CompositeByteBuf cbb = (CompositeByteBuf) buffer;
            slice.retain();
            cbb.addComponent(slice);
            cbb.writerIndex(cbb.writerIndex() + slice.readableBytes());
        } else {
            buffer.writeBytes(slice);
            LOG.debug("buffer copied. You can use a CompositeByteBuf");
        }
        return this;

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        uncompressed.release();
        dataBuf.release();
    }


    private static ByteBuf readUncompressed(EmbeddedChannel channel) throws Exception {
        CompositeByteBuf uncompressed = Unpooled.compositeBuffer();
        ByteBuf msg;
        while ((msg = channel.readInbound()) != null) {
            uncompressed.addComponent(msg);
            uncompressed.writerIndex(uncompressed.writerIndex() + msg.readableBytes());
        }


        return uncompressed;
    }

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