Thanks again for the responses.

Reverse conversion is not a major requirement. We have approximately 20 of these request strings to convert per jmeter test, with approximately 20 tests total.

The unfortunate scenario is that RRDTool can only use 19 characters for a ds name and our nagios implementation is leaning on RRDTool solely.

Rather than reinventing the wheel, this is more of a last ditch approach to assigning a static unique identifier to each HTTP request. I will likely add a command line argument to print out the preconverted strings for debugging purposes.

I suppose it is worth asking if anyone is familiar with a way to assign a unique ID to each request via jmeter, but that really is a rabbithole we probably should avoid... :)

-BP-