reactor.ipc.netty.channel.data

Class AbstractFileChunkedStrategy<T>

java.lang.Object

reactor.ipc.netty.channel.data.AbstractFileChunkedStrategy<T>

All Implemented Interfaces:

FileChunkedStrategy<T>

public abstract class AbstractFileChunkedStrategy<T>
extends java.lang.Object
implements FileChunkedStrategy<T>

A base abstract implementation of a FileChunkedStrategy. Only the FileChunkedStrategy.chunkFile(FileChannel) method needs to be implemented, but child classes can also override afterWrite(NettyContext) to add custom cleanup. The pipeline preparation and cleanup involves adding and removing the NettyPipeline.ChunkedWriter handler if it was not already present. It will be added before NettyPipeline.ReactiveBridge or last, if the bridge handler is not present.

Author:

Simon Baslé

Constructor Summary

Constructors

Constructor and Description
AbstractFileChunkedStrategy()

Method Summary

Modifier and Type	Method and Description
protected void	afterWrite(NettyContext context) Additional cleanup to perform at the end of cleanupPipeline(NettyContext).
void	cleanupPipeline(NettyContext context) Once the file has been written, allows to clean the pipeline (see FileChunkedStrategy.preparePipeline(NettyContext)) and do other operations.
void	preparePipeline(NettyContext context) Allow for preparing the pipeline (eg.

Methods inherited from class java.lang.Object

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

Methods inherited from interface reactor.ipc.netty.channel.data.FileChunkedStrategy

chunkFile

Constructor Detail

AbstractFileChunkedStrategy

public AbstractFileChunkedStrategy()

Method Detail

preparePipeline

public final void preparePipeline(NettyContext context)

Allow for preparing the pipeline (eg. by adding handlers dynamically) before sending the chunked file. The NettyContext is provided and can be used to get the channel() then pipeline().

This adds a ChunkedWriter to the pipeline to extract chunks from the ChunkedInput that the strategy produces. This step is skipped if the handler is already present, and the placement of the handler depends on the presence of the ReactiveBridge handler (see NettyPipeline).

Specified by:

preparePipeline in interface FileChunkedStrategy<T>

Parameters:

context - the context from which to obtain the channel and pipeline

cleanupPipeline

public final void cleanupPipeline(NettyContext context)

Once the file has been written, allows to clean the pipeline (see FileChunkedStrategy.preparePipeline(NettyContext)) and do other operations.

This removes the ChunkedWriter handler if it was added by this strategy. It then calls the afterWrite(NettyContext) method

Specified by:

cleanupPipeline in interface FileChunkedStrategy<T>

Parameters:

context - the context from which to obtain the channel and pipeline

afterWrite

protected void afterWrite(NettyContext context)

Additional cleanup to perform at the end of cleanupPipeline(NettyContext).

Parameters:

context - the NettyContext