Example usage for io.netty.buffer ByteBufAllocator heapBuffer

Introduction

In this page you can find the example usage for io.netty.buffer ByteBufAllocator heapBuffer.

Prototype

ByteBuf heapBuffer(int initialCapacity);

Source Link

Document

Allocate a heap ByteBuf with the given initial capacity.

Usage

From source file:com.minetats.mw.NamedPipe.java

License:Apache License

@Override
public ByteBuf readChunk(ByteBufAllocator bba) throws Exception {
    chunks++;/*from   w ww .jav  a2 s .c  o  m*/
    ByteBuf buf = bba.heapBuffer(chunkSize);
    boolean release = false;
    int read = 0;
    try {
        do {
            buf.writerIndex(buf.writerIndex() + read);
            read = file.read(buf.array(), buf.arrayOffset() + read, chunkSize - read);
        } while (read > 0);
        int index = buf.writerIndex() - 1;
        if (buf.getByte(index) == '\n' && buf.getByte(index - 1) == '\n') {
            endOfInput = true;
            System.out.println("endOfInput=" + endOfInput + ", read " + chunks + " chunks");
        }
        return buf;
    } finally {
        if (release) {
            buf.release();
        }
    }
}

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From source file:io.advantageous.conekt.net.impl.ConektHandler.java

License:Open Source License

protected static ByteBuf safeBuffer(ByteBuf buf, ByteBufAllocator allocator) {
    if (buf == Unpooled.EMPTY_BUFFER) {
        return buf;
    }/*from  w  w  w . j  a v a  2s.co m*/
    if (buf.isDirect() || buf instanceof CompositeByteBuf) {
        try {
            if (buf.isReadable()) {
                ByteBuf buffer = allocator.heapBuffer(buf.readableBytes());
                buffer.writeBytes(buf);
                return buffer;
            } else {
                return Unpooled.EMPTY_BUFFER;
            }
        } finally {
            buf.release();
        }
    }
    return buf;
}

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From source file:io.vertx.core.http.impl.Http2ConnectionBase.java

License:Open Source License

/**
 * Return a buffer from HTTP/2 codec that Vert.x can use:
 *
 * - if it's a direct buffer (coming likely from OpenSSL) : we get a heap buffer version
 * - if it's a composite buffer we do the same
 * - otherwise we increase the ref count
 *///from   ww  w. j  a  v  a 2  s. c o m
static ByteBuf safeBuffer(ByteBuf buf, ByteBufAllocator allocator) {
    if (buf == Unpooled.EMPTY_BUFFER) {
        return buf;
    }
    if (buf.isDirect() || buf instanceof CompositeByteBuf) {
        if (buf.isReadable()) {
            ByteBuf buffer = allocator.heapBuffer(buf.readableBytes());
            buffer.writeBytes(buf);
            return buffer;
        } else {
            return Unpooled.EMPTY_BUFFER;
        }
    }
    return buf.retain();
}

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From source file:io.vertx.core.net.impl.VertxHandler.java

License:Open Source License

public static ByteBuf safeBuffer(ByteBuf buf, ByteBufAllocator allocator) {
    if (buf == Unpooled.EMPTY_BUFFER) {
        return buf;
    }/*w w  w . j  av  a 2s  . c o m*/
    if (buf.isDirect() || buf instanceof CompositeByteBuf) {
        try {
            if (buf.isReadable()) {
                ByteBuf buffer = allocator.heapBuffer(buf.readableBytes());
                buffer.writeBytes(buf);
                return buffer;
            } else {
                return Unpooled.EMPTY_BUFFER;
            }
        } finally {
            buf.release();
        }
    }
    return buf;
}

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From source file:mysql.client.Session_Old.java

/**
 * ?mysql server ?/*  www  . ja v a 2s  .  c  o  m*/
 * @return
 * @throws IOException
 */
private ByteBuf readPacket() throws IOException {
    try {
        //mysqlio?DataInputStream.readFully,?
        //?read(bytes)readFully(bytes),????,??
        io.readFully(packetHeaderBuf);
    } catch (EOFException e) {
        //mysql ?,
        io.close();
        return null;
    }
    //        if(count < packetHeaderBuf.length){
    //            //mysql ?,
    //            io.close();
    //            return null;
    //        }

    int packetLength = (this.packetHeaderBuf[0] & 0xff) + ((this.packetHeaderBuf[1] & 0xff) << 8)
            + ((this.packetHeaderBuf[2] & 0xff) << 16);

    byte[] bytes = new byte[packetLength + 1];
    int realReadCount = io.read(bytes);
    bytes[packetLength] = 0;//??packetLength, 0, c++ /0 ?
    if (realReadCount != packetLength) {
        io.close();
        throw new IllegalStateException("mysql ??,length??");
    }
    ByteBufAllocator allocator = new UnpooledByteBufAllocator(false);
    ByteBuf byteBuf = allocator.heapBuffer(bytes.length);
    byteBuf.writeBytes(bytes);
    byteBuf = byteBuf.order(ByteOrder.LITTLE_ENDIAN);//mysql ????
    return byteBuf;
}

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