[CONF] Apache MINA: ErrorGeneratingFilter Tutorial (page edited)

confluence Sat, 14 Feb 2009 02:20:31 -0800

Page Edited : MINA : ErrorGeneratingFilter Tutorial

ErrorGeneratingFilter Tutorial has been edited by Ashish Paliwal (Feb 14, 2009).

Change summary:

Reformatted

Content:

Introduction

The ErrorGeneratingFilter is an IoFilter with to introduce random error in your data streams. The filter can insert/delete/modify bytes from the data stream with a specified probability.

The Code

To use an ErrorGeneratingFilter:

Instantiate Error Generating Filter
Set probability for modifying data stream (insert/delete/modify)
Enable manipulation for read/write data
Add to the filter chain

Instantiating the filter

ErrorGeneratingFilter egf = new ErrorGeneratingFilter();

Set Probability for modifying Data Stream

For activate the change of some bytes in your IoBuffer, for a probability of 200 out of 1000 IoBuffer processed :

egf.setChangeByteProbability(200);

or activate the insertion of some bytes in your IoBuffer, for a probability of 200 out of 1000 :

egf.setInsertByteProbability(200);

And for the removing of some bytes :

egf.setRemoveByteProbability(200);

Enable manipulation of read/write data

You can activate the error generation for write or read with the following methods :

egf.setManipulateReads(true);
egf.setManipulateWrites(true);

Now add it to filter chain, it'll generate the error at the given probability.

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