io.asyncer.r2dbc.mysql.internal.util

Class NettyBufferUtils

java.lang.Object

io.asyncer.r2dbc.mysql.internal.util.NettyBufferUtils

public final class NettyBufferUtils
extends Object

An internal utility considers the use of safe release buffers (array or List). It uses standard netty ReferenceCountUtil.safeRelease(java.lang.Object) to suppress release errors.

Method Summary

Modifier and Type	Method and Description
static io.netty.buffer.ByteBuf	composite(List<io.netty.buffer.ByteBuf> parts) Combine ByteBufs through composite buffer.
static Flux<io.netty.buffer.ByteBuf>	readFile(Path path, io.netty.buffer.ByteBufAllocator allocator, int bufferSize) Reads all bytes from a file asynchronously.
static void	releaseAll(io.asyncer.r2dbc.mysql.message.FieldValue[] fields)
static void	releaseAll(io.asyncer.r2dbc.mysql.message.FieldValue[] fields, int bound)
static void	releaseAll(List<? extends io.netty.util.ReferenceCounted> parts)
static void	releaseAll(List<? extends io.netty.util.ReferenceCounted> parts, int bound)
static void	releaseAll(io.netty.util.ReferenceCounted[] parts)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

readFile

public static Flux<io.netty.buffer.ByteBuf> readFile(Path path,
                                                     io.netty.buffer.ByteBufAllocator allocator,
                                                     int bufferSize)

Reads all bytes from a file asynchronously.

Parameters:

path - The path of the file want to be read.

allocator - The ByteBufAllocator used to allocate ByteBufs.

bufferSize - The size of the buffer used to read the file.

Returns:

A Flux emits ByteBufs read from the file.

composite

public static io.netty.buffer.ByteBuf composite(List<io.netty.buffer.ByteBuf> parts)

Combine ByteBufs through composite buffer.

This method would release all ByteBufs when any exception throws.

Parameters:

parts - The ByteBufs want to be wrap, it can not be empty, and it will be cleared.

Returns:

A ByteBuf holds the all bytes of given parts, it may be a read-only buffer.

releaseAll

public static void releaseAll(io.netty.util.ReferenceCounted[] parts)

releaseAll

public static void releaseAll(io.asyncer.r2dbc.mysql.message.FieldValue[] fields)

releaseAll

public static void releaseAll(List<? extends io.netty.util.ReferenceCounted> parts)

releaseAll

public static void releaseAll(io.asyncer.r2dbc.mysql.message.FieldValue[] fields,
                              int bound)

releaseAll

public static void releaseAll(List<? extends io.netty.util.ReferenceCounted> parts,
                              int bound)