Example usage for io.netty.buffer ByteBuf release

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:alluxio.worker.netty.DataServerUFSFileReadHandler.java

License:Apache License

@Override
protected DataBuffer getDataBuffer(Channel channel, long offset, int len) throws IOException {
    ByteBuf buf = channel.alloc().buffer(len, len);
    try {//www.  j av a2  s .  co m
        InputStream in = ((FileReadRequestInternal) mRequest).mInputStream;
        if (in != null) { // if we have not reached the end of the file
            while (buf.writableBytes() > 0 && buf.writeBytes(in, buf.writableBytes()) != -1) {
            }
        }
        if (buf.readableBytes() == 0) {
            buf.release();
            return null;
        }
        return new DataNettyBufferV2(buf);
    } catch (Throwable e) {
        buf.release();
        throw e;
    }
}

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From source file:alluxio.worker.netty.ReadHandlerTest.java

License:Apache License

/**
 * Checks all the read responses./*from  w w  w  . j a v  a  2 s  .  c  o  m*/
 */
protected void checkAllReadResponses(EmbeddedChannel channel, long checksumExpected) {
    boolean eof = false;
    long checksumActual = 0;
    while (!eof) {
        Object readResponse = waitForOneResponse(channel);
        if (readResponse == null) {
            Assert.fail();
            break;
        }
        DataBuffer buffer = checkReadResponse(readResponse, PStatus.OK);
        eof = buffer == null;
        if (buffer != null) {
            if (buffer instanceof DataNettyBufferV2) {
                ByteBuf buf = (ByteBuf) buffer.getNettyOutput();
                while (buf.readableBytes() > 0) {
                    checksumActual += BufferUtils.byteToInt(buf.readByte());
                }
                buf.release();
            } else {
                Assert.assertTrue(buffer instanceof DataFileChannel);
                final ByteBuffer byteBuffer = ByteBuffer.allocate((int) buffer.getLength());
                WritableByteChannel writableByteChannel = new WritableByteChannel() {
                    @Override
                    public boolean isOpen() {
                        return true;
                    }

                    @Override
                    public void close() throws IOException {
                    }

                    @Override
                    public int write(ByteBuffer src) throws IOException {
                        int sz = src.remaining();
                        byteBuffer.put(src);
                        return sz;
                    }
                };
                try {
                    ((FileRegion) buffer.getNettyOutput()).transferTo(writableByteChannel, 0);
                } catch (IOException e) {
                    Assert.fail();
                }
                byteBuffer.flip();
                while (byteBuffer.remaining() > 0) {
                    checksumActual += BufferUtils.byteToInt(byteBuffer.get());
                }
            }
        }
    }
    Assert.assertEquals(checksumExpected, checksumActual);
    Assert.assertTrue(eof);
}

---

From source file:app.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);//  w  ww. ja v  a 2s  .  c o m
        buf.release();
        HttpUtil.setContentLength(res, res.content().readableBytes());
    }

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

---

From source file:arekkuusu.grimoireOfAlice.client.gui.GuiScreenYoukaiBook.java

License:Open Source License

private void sendBookToServer(boolean p_146462_1_) {
    if (bookIsUnsigned && field_146481_r) {
        if (bookPages != null) {
            String s;//from ww w.j  a va  2  s.  c o  m

            while (bookPages.tagCount() > 1) {
                s = bookPages.getStringTagAt(bookPages.tagCount() - 1);

                if (s.length() != 0) {
                    break;
                }

                bookPages.removeTag(bookPages.tagCount() - 1);
            }

            if (bookObj.hasTagCompound()) {
                NBTTagCompound nbttagcompound = bookObj.getTagCompound();
                nbttagcompound.setTag("pages", bookPages);
            } else {
                bookObj.setTagInfo("pages", bookPages);
            }

            s = "MC|BEdit";

            if (p_146462_1_) {
                s = "MC|BSign";
                bookObj.setTagInfo("author", new NBTTagString(editingPlayer.getCommandSenderName()));
                bookObj.setTagInfo("title", new NBTTagString(bookTitle.trim().replace("k", "").substring(2)));
                bookObj.func_150996_a(GOAItem.enchantedBook);
            }

            ByteBuf bytebuf = Unpooled.buffer();

            try {
                new PacketBuffer(bytebuf).writeItemStackToBuffer(bookObj);
                mc.getNetHandler().addToSendQueue(new C17PacketCustomPayload(s, bytebuf));
            } catch (Exception exception) {
                LOGGER.error("Couldn\'t send book info", exception);
            } finally {
                bytebuf.release();
            }
        }
    }
}

---

From source file:at.yawk.dbus.protocol.object.ArrayObject.java

@Override
public void serialize(AlignableByteBuf buf) {
    ByteBuf tempBuffer = serializeValues(ArrayObject.allocateBufferForWrite(buf.getBuffer()));

    buf.alignWrite(4);//  w  ww  .ja  v  a  2s . co  m
    buf.getBuffer().writeInt(tempBuffer.writerIndex());
    if (tempBuffer.isReadable()) {
        buf.getBuffer().writeBytes(tempBuffer);
    }
    tempBuffer.release();
}

---

From source file:bean.lee.demo.netty.learn.http.file.HttpStaticFileServerHandler.java

License:Apache License

private static void sendListing(ChannelHandlerContext ctx, File dir) {
    FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK);
    response.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");

    StringBuilder buf = new StringBuilder();
    String dirPath = dir.getPath();

    buf.append("<!DOCTYPE html>\r\n");
    buf.append("<html><head><title>");
    buf.append("Listing of: ");
    buf.append(dirPath);/*  w w  w  . jav  a  2  s .c  o m*/
    buf.append("</title></head><body>\r\n");

    buf.append("<h3>Listing of: ");
    buf.append(dirPath);
    buf.append("</h3>\r\n");

    buf.append("<ul>");
    buf.append("<li><a href=\"../\">..</a></li>\r\n");

    for (File f : dir.listFiles()) {
        if (f.isHidden() || !f.canRead()) {
            continue;
        }

        String name = f.getName();
        if (!ALLOWED_FILE_NAME.matcher(name).matches()) {
            continue;
        }

        buf.append("<li><a href=\"");
        buf.append(name);
        buf.append("\">");
        buf.append(name);
        buf.append("</a></li>\r\n");
    }

    buf.append("</ul></body></html>\r\n");
    ByteBuf buffer = Unpooled.copiedBuffer(buf, CharsetUtil.UTF_8);
    response.content().writeBytes(buffer);
    buffer.release();

    // Close the connection as soon as the error message is sent.
    ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}

---

From source file:books.netty.protocol.http.fileServer.HttpFileServerHandler.java

License:Apache License

private static void sendListing(ChannelHandlerContext ctx, File dir) {
    FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK);
    response.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");
    StringBuilder buf = new StringBuilder();
    String dirPath = dir.getPath();
    buf.append("<!DOCTYPE html>\r\n");
    buf.append("<html><head><title>");
    buf.append(dirPath);//from w  w  w  .  j ava  2s. c om
    buf.append(" ");
    buf.append("</title></head><body>\r\n");
    buf.append("<h3>");
    buf.append(dirPath).append(" ");
    buf.append("</h3>\r\n");
    buf.append("<ul>");
    buf.append("<li><a href=\"../\">..</a></li>\r\n");
    for (File f : dir.listFiles()) {
        if (f.isHidden() || !f.canRead()) {
            continue;
        }
        String name = f.getName();
        if (!ALLOWED_FILE_NAME.matcher(name).matches()) {
            continue;
        }
        buf.append("<li><a href=\"");
        buf.append(name);
        buf.append("\">");
        buf.append(name);
        buf.append("</a></li>\r\n");
    }
    buf.append("</ul></body></html>\r\n");
    ByteBuf buffer = Unpooled.copiedBuffer(buf, CharsetUtil.UTF_8);
    response.content().writeBytes(buffer);
    buffer.release();
    ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}

---

From source file:books.netty.protocol.websocket.server.WebSocketServerHandler.java

License:Apache License

private static void sendHttpResponse(ChannelHandlerContext ctx, FullHttpRequest req, FullHttpResponse res) {
    // /*ww w . j a  v a2  s.  c  om*/
    if (res.getStatus().code() != 200) {
        ByteBuf buf = Unpooled.copiedBuffer(res.getStatus().toString(), CharsetUtil.UTF_8);
        res.content().writeBytes(buf);
        buf.release();
        setContentLength(res, res.content().readableBytes());
    }

    // ?Keep-Alive
    ChannelFuture f = ctx.channel().writeAndFlush(res);
    if (!isKeepAlive(req) || res.getStatus().code() != 200) {
        f.addListener(ChannelFutureListener.CLOSE);
    }
}

---

From source file:ca.lambtoncollege.netty.webSocket.ServerHandlerWebSocket.java

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

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

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From source file:ch.ethz.globis.distindex.middleware.net.MiddlewareChannelHandler.java

License:Open Source License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    ByteBuf buf = (ByteBuf) msg;
    String clientHost = ctx.channel().remoteAddress().toString();
    ByteBuffer response = ioHandler.handle(clientHost, buf.nioBuffer());
    ByteBuf nettyBuf = Unpooled.wrappedBuffer(response);
    ByteBuf sizeBuf = Unpooled.copyInt(nettyBuf.readableBytes());

    ctx.write(sizeBuf);/*from   ww  w  .j  a va 2  s.  c  o  m*/
    ctx.write(nettyBuf);
    ctx.flush();
    buf.release();
}

---

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