Geneos - How to limit the number of digits the JMX sampler renders to?

Using Masks is a way of addressing this but it has some undocumented features.

Create a file that must have the same name as the class but with a .java extension ("geneosFormat.java"), then compile it using

javac -d . -classpath .../geneos-plugins.jar geneosFormat.java

This will create a hierarchy in the current directory, e.g. com/itrsgroup/jmx/masks, and put the geneosFormat.class file in there. Now build a .jar file using

jar cvf custom-masks.jar com

... and delete the com directory or this will be used instead:

rm -r com/

At this point, if your custom-masks.jar file in your netprobe directory (or the same place as the geneos-jars.jar at least), restart the NetProbe.

Now, in the JMX sampler you have to enable Masks for all rows or columns using the IGNORE Mask type and then add this one to the field you want to format, like this:

The full text for the Mask above is geneosFormat(%.2fMB) - note the lack of quotes! 

This will now render the field with 2 decimal places.

The sample class above converts the raw data - which is a string - into a Float type. If you want to render your data using a different format you will have to account for that too.